diff options
13 files changed, 654 insertions, 654 deletions
diff --git a/classboost_1_1afio_1_1v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1atomic__append.html b/classboost_1_1afio_1_1v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1atomic__append.html index 864bc94b..ed807351 100644 --- a/classboost_1_1afio_1_1v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1atomic__append.html +++ b/classboost_1_1afio_1_1v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1atomic__append.html @@ -268,190 +268,190 @@ Protected Member Functions</h2></td></tr> <dl class="todo"><dt><b><a class="el" href="todo.html#_todo000006">Todo:</a></b></dt><dd>Read from header.last_known_good immediately if possible in order to avoid a duplicate read later </dd></dl> <p>Implements <a class="el" href="classboost_1_1afio_1_1v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html">boost::afio::v2_xxx::algorithm::shared_fs_mutex::shared_fs_mutex</a>.</p> -<div class="fragment"><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  {</div> -<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  BOOST_AFIO_LOG_FUNCTION_CALL(<span class="keyword">this</span>);</div> -<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  atomic_append_detail::lock_request lock_request;</div> -<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">if</span>(out.entities.size() > <span class="keyword">sizeof</span>(lock_request.entities) / <span class="keyword">sizeof</span>(lock_request.entities[0]))</div> -<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">return</span> make_errored_result<void>(stl11::errc::argument_list_too_long);</div> -<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div> -<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  stl11::chrono::steady_clock::time_point began_steady;</div> -<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  stl11::chrono::system_clock::time_point end_utc;</div> -<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">if</span>(d)</div> -<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  {</div> -<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">if</span>((d).steady)</div> -<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  began_steady = stl11::chrono::steady_clock::now();</div> -<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">else</span></div> -<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  end_utc = (d).to_time_point();</div> -<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  }</div> -<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// Fire this if an error occurs</span></div> -<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keyword">auto</span> disableunlock = undoer([&] { out.release(); });</div> -<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div> -<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="comment">// Write my lock request immediately</span></div> -<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  memset(&lock_request, 0, <span class="keyword">sizeof</span>(lock_request));</div> -<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  lock_request.unique_id = _unique_id;</div> -<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keyword">auto</span> count = stl11::chrono::system_clock::now() - stl11::chrono::system_clock::from_time_t(_header.time_offset);</div> -<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  lock_request.us_count = stl11::chrono::duration_cast<stl11::chrono::microseconds>(count).count();</div> -<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  lock_request.items = out.entities.size();</div> -<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  memcpy(lock_request.entities, out.entities.data(), <span class="keyword">sizeof</span>(lock_request.entities[0]) * out.entities.size());</div> -<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">if</span>(!_skip_hashing)</div> -<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  lock_request.hash = boost_lite::algorithm::hash::fast_hash::hash(((<span class="keywordtype">char</span> *) &lock_request) + 16, <span class="keyword">sizeof</span>(lock_request) - 16);</div> -<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="comment">// My lock request will be the file's current length or higher</span></div> -<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  BOOST_OUTCOME_TRY(my_lock_request_offset, _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a6e4524b6bd5de76631bcc7ab68bab7bd">length</a>());</div> -<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  {</div> -<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  BOOST_OUTCOME_TRYV(_h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#adf964e787e0666fc5b7d94c2715ee6f5">set_append_only</a>(<span class="keyword">true</span>));</div> -<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keyword">auto</span> undo = undoer([<span class="keyword">this</span>] { (void) _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#adf964e787e0666fc5b7d94c2715ee6f5">set_append_only</a>(<span class="keyword">false</span>); });</div> -<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  file_handle::extent_guard append_guard;</div> -<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">if</span>(_nfs_compatibility)</div> -<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  {</div> -<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  file_handle::extent_type lastbyte = (file_handle::extent_type) -1;</div> -<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="comment">// Lock up to the beginning of the shadow lock space</span></div> -<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  lastbyte &= ~(1ULL << 63);</div> -<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  BOOST_OUTCOME_TRY(append_guard_, _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(my_lock_request_offset, lastbyte, <span class="keyword">true</span>));</div> -<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  append_guard = std::move(append_guard_);</div> -<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  }</div> -<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  BOOST_OUTCOME_TRYV(_h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a8890b6a6046fb562f9f0ab943b79dfb4" title="Write data to the open handle.">write</a>(0, (<span class="keywordtype">char</span> *) &lock_request, <span class="keyword">sizeof</span>(lock_request)));</div> -<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  }</div> -<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> </div> -<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="comment">// Find the record I just wrote</span></div> -<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  alignas(64) char _buffer[4096 + 2048]; <span class="comment">// 6Kb cache line aligned buffer</span></div> -<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="comment">// Read onwards from length as reported before I wrote my lock request</span></div> -<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="comment">// until I find my lock request. This loop should never actually iterate</span></div> -<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="comment">// except under extreme load conditions.</span><span class="comment"></span></div> -<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="comment"> //! \todo Read from header.last_known_good immediately if possible in order</span></div> -<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="comment"> //! to avoid a duplicate read later</span></div> -<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="comment"></span> for(;;)</div> -<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  {</div> -<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  file_handle::io_result<file_handle::buffer_type> readoutcome = _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(my_lock_request_offset, _buffer, <span class="keyword">sizeof</span>(_buffer));</div> -<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="comment">// Should never happen :)</span></div> -<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keywordflow">if</span>(readoutcome.has_error())</div> -<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  {</div> -<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  BOOST_AFIO_LOG_FATAL(<span class="keyword">this</span>, <span class="stringliteral">"atomic_append::lock() saw an error when searching for just written data"</span>);</div> -<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  std::terminate();</div> -<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  }</div> -<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keyword">const</span> atomic_append_detail::lock_request *record, *lastrecord;</div> -<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="keywordflow">for</span>(record = (<span class="keyword">const</span> atomic_append_detail::lock_request *) readoutcome.get().first, lastrecord = (<span class="keyword">const</span> atomic_append_detail::lock_request *) (readoutcome.get().first + readoutcome.get().second); record < lastrecord && record->hash != lock_request.hash; ++record)</div> -<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  my_lock_request_offset += <span class="keyword">sizeof</span>(atomic_append_detail::lock_request);</div> -<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keywordflow">if</span>(record->hash == lock_request.hash)</div> -<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordflow">break</span>;</div> -<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  }</div> -<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> </div> -<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="comment">// extent_guard is now valid and will be unlocked on error</span></div> -<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  out.hint = my_lock_request_offset;</div> -<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  disableunlock.dismiss();</div> -<div class="line"><a name="l00291"></a><span class="lineno"> 291</span> </div> -<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="comment">// Lock my request for writing so others can sleep on me</span></div> -<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  file_handle::extent_guard my_request_guard;</div> -<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keywordflow">if</span>(!spin_not_sleep)</div> -<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  {</div> -<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keyword">auto</span> lock_offset = my_lock_request_offset;</div> -<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="comment">// Set the top bit to use the shadow lock space on Windows</span></div> -<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  lock_offset |= (1ULL << 63);</div> -<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  BOOST_OUTCOME_TRY(my_request_guard_, _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(lock_offset, <span class="keyword">sizeof</span>(lock_request), <span class="keyword">true</span>));</div> -<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  my_request_guard = std::move(my_request_guard_);</div> -<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  }</div> -<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> </div> -<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="comment">// Read every record preceding mine until header.first_known_good inclusive</span></div> -<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keyword">auto</span> record_offset = my_lock_request_offset - <span class="keyword">sizeof</span>(atomic_append_detail::lock_request);</div> -<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">do</span></div> -<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  {</div> -<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  reload:</div> -<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="comment">// Refresh the header and load a snapshot of everything between record_offset</span></div> -<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="comment">// and first_known_good or -6Kb, whichever the sooner</span></div> -<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  BOOST_OUTCOME_TRYV(_read_header());</div> -<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="comment">// If there are no preceding records, we're done</span></div> -<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordflow">if</span>(record_offset < _header.first_known_good)</div> -<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordflow">break</span>;</div> -<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keyword">auto</span> start_offset = record_offset;</div> -<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordflow">if</span>(start_offset > <span class="keyword">sizeof</span>(_buffer) - <span class="keyword">sizeof</span>(atomic_append_detail::lock_request))</div> -<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  start_offset -= <span class="keyword">sizeof</span>(_buffer) - <span class="keyword">sizeof</span>(atomic_append_detail::lock_request);</div> -<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <span class="keywordflow">else</span></div> -<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  start_offset = <span class="keyword">sizeof</span>(atomic_append_detail::lock_request);</div> -<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="keywordflow">if</span>(start_offset < _header.first_known_good)</div> -<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  start_offset = _header.first_known_good;</div> -<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  assert(record_offset >= start_offset);</div> -<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  assert(record_offset - start_offset <= <span class="keyword">sizeof</span>(_buffer));</div> -<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  BOOST_OUTCOME_TRY(batchread, _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(start_offset, _buffer, (<span class="keywordtype">size_t</span>)(record_offset - start_offset) + <span class="keyword">sizeof</span>(atomic_append_detail::lock_request)));</div> -<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  assert(batchread.second == record_offset - start_offset + <span class="keyword">sizeof</span>(atomic_append_detail::lock_request));</div> -<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keyword">const</span> atomic_append_detail::lock_request *record = (atomic_append_detail::lock_request *) (batchread.first + batchread.second - <span class="keyword">sizeof</span>(atomic_append_detail::lock_request));</div> -<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keyword">const</span> atomic_append_detail::lock_request *firstrecord = (atomic_append_detail::lock_request *) batchread.first;</div> -<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> </div> -<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="comment">// Skip all completed lock requests or not mentioning any of my entities</span></div> -<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <span class="keywordflow">for</span>(; record >= firstrecord; record_offset -= <span class="keyword">sizeof</span>(atomic_append_detail::lock_request), --record)</div> -<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  {</div> -<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="comment">// If a completed lock request, skip</span></div> -<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordflow">if</span>(!record->hash && !record->unique_id)</div> -<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordflow">continue</span>;</div> -<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="comment">// If record hash doesn't match contents it's a torn read, reload</span></div> -<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="keywordflow">if</span>(!_skip_hashing)</div> +<div class="fragment"><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  {</div> +<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  BOOST_AFIO_LOG_FUNCTION_CALL(<span class="keyword">this</span>);</div> +<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  atomic_append_detail::lock_request lock_request;</div> +<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">if</span>(out.entities.size() > <span class="keyword">sizeof</span>(lock_request.entities) / <span class="keyword">sizeof</span>(lock_request.entities[0]))</div> +<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">return</span> make_errored_result<void>(stl11::errc::argument_list_too_long);</div> +<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div> +<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  stl11::chrono::steady_clock::time_point began_steady;</div> +<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  stl11::chrono::system_clock::time_point end_utc;</div> +<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">if</span>(d)</div> +<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  {</div> +<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">if</span>((d).steady)</div> +<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  began_steady = stl11::chrono::steady_clock::now();</div> +<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">else</span></div> +<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  end_utc = (d).to_time_point();</div> +<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  }</div> +<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="comment">// Fire this if an error occurs</span></div> +<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keyword">auto</span> disableunlock = undoer([&] { out.release(); });</div> +<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> </div> +<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="comment">// Write my lock request immediately</span></div> +<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  memset(&lock_request, 0, <span class="keyword">sizeof</span>(lock_request));</div> +<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  lock_request.unique_id = _unique_id;</div> +<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keyword">auto</span> count = stl11::chrono::system_clock::now() - stl11::chrono::system_clock::from_time_t(_header.time_offset);</div> +<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  lock_request.us_count = stl11::chrono::duration_cast<stl11::chrono::microseconds>(count).count();</div> +<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  lock_request.items = out.entities.size();</div> +<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  memcpy(lock_request.entities, out.entities.data(), <span class="keyword">sizeof</span>(lock_request.entities[0]) * out.entities.size());</div> +<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">if</span>(!_skip_hashing)</div> +<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  lock_request.hash = boost_lite::algorithm::hash::fast_hash::hash(((<span class="keywordtype">char</span> *) &lock_request) + 16, <span class="keyword">sizeof</span>(lock_request) - 16);</div> +<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="comment">// My lock request will be the file's current length or higher</span></div> +<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  BOOST_OUTCOME_TRY(my_lock_request_offset, _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a6e4524b6bd5de76631bcc7ab68bab7bd">length</a>());</div> +<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  {</div> +<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  BOOST_OUTCOME_TRYV(_h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#adf964e787e0666fc5b7d94c2715ee6f5">set_append_only</a>(<span class="keyword">true</span>));</div> +<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keyword">auto</span> undo = undoer([<span class="keyword">this</span>] { (void) _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#adf964e787e0666fc5b7d94c2715ee6f5">set_append_only</a>(<span class="keyword">false</span>); });</div> +<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  file_handle::extent_guard append_guard;</div> +<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">if</span>(_nfs_compatibility)</div> +<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  {</div> +<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  file_handle::extent_type lastbyte = (file_handle::extent_type) -1;</div> +<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="comment">// Lock up to the beginning of the shadow lock space</span></div> +<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  lastbyte &= ~(1ULL << 63);</div> +<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  BOOST_OUTCOME_TRY(append_guard_, _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(my_lock_request_offset, lastbyte, <span class="keyword">true</span>));</div> +<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  append_guard = std::move(append_guard_);</div> +<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  }</div> +<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  BOOST_OUTCOME_TRYV(_h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a8890b6a6046fb562f9f0ab943b79dfb4" title="Write data to the open handle.">write</a>(0, (<span class="keywordtype">char</span> *) &lock_request, <span class="keyword">sizeof</span>(lock_request)));</div> +<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  }</div> +<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> </div> +<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="comment">// Find the record I just wrote</span></div> +<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  alignas(64) char _buffer[4096 + 2048]; <span class="comment">// 6Kb cache line aligned buffer</span></div> +<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="comment">// Read onwards from length as reported before I wrote my lock request</span></div> +<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="comment">// until I find my lock request. This loop should never actually iterate</span></div> +<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="comment">// except under extreme load conditions.</span><span class="comment"></span></div> +<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="comment"> //! \todo Read from header.last_known_good immediately if possible in order</span></div> +<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="comment"> //! to avoid a duplicate read later</span></div> +<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="comment"></span> for(;;)</div> +<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  {</div> +<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  file_handle::io_result<file_handle::buffer_type> readoutcome = _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(my_lock_request_offset, _buffer, <span class="keyword">sizeof</span>(_buffer));</div> +<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="comment">// Should never happen :)</span></div> +<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keywordflow">if</span>(readoutcome.has_error())</div> +<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  {</div> +<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  BOOST_AFIO_LOG_FATAL(<span class="keyword">this</span>, <span class="stringliteral">"atomic_append::lock() saw an error when searching for just written data"</span>);</div> +<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  std::terminate();</div> +<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  }</div> +<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keyword">const</span> atomic_append_detail::lock_request *record, *lastrecord;</div> +<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">for</span>(record = (<span class="keyword">const</span> atomic_append_detail::lock_request *) readoutcome.get().first, lastrecord = (<span class="keyword">const</span> atomic_append_detail::lock_request *) (readoutcome.get().first + readoutcome.get().second); record < lastrecord && record->hash != lock_request.hash; ++record)</div> +<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  my_lock_request_offset += <span class="keyword">sizeof</span>(atomic_append_detail::lock_request);</div> +<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keywordflow">if</span>(record->hash == lock_request.hash)</div> +<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <span class="keywordflow">break</span>;</div> +<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  }</div> +<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> </div> +<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="comment">// extent_guard is now valid and will be unlocked on error</span></div> +<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  out.hint = my_lock_request_offset;</div> +<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  disableunlock.dismiss();</div> +<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> </div> +<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="comment">// Lock my request for writing so others can sleep on me</span></div> +<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  file_handle::extent_guard my_request_guard;</div> +<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordflow">if</span>(!spin_not_sleep)</div> +<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  {</div> +<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keyword">auto</span> lock_offset = my_lock_request_offset;</div> +<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="comment">// Set the top bit to use the shadow lock space on Windows</span></div> +<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  lock_offset |= (1ULL << 63);</div> +<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  BOOST_OUTCOME_TRY(my_request_guard_, _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(lock_offset, <span class="keyword">sizeof</span>(lock_request), <span class="keyword">true</span>));</div> +<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  my_request_guard = std::move(my_request_guard_);</div> +<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  }</div> +<div class="line"><a name="l00295"></a><span class="lineno"> 295</span> </div> +<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="comment">// Read every record preceding mine until header.first_known_good inclusive</span></div> +<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keyword">auto</span> record_offset = my_lock_request_offset - <span class="keyword">sizeof</span>(atomic_append_detail::lock_request);</div> +<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keywordflow">do</span></div> +<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  {</div> +<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  reload:</div> +<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="comment">// Refresh the header and load a snapshot of everything between record_offset</span></div> +<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="comment">// and first_known_good or -6Kb, whichever the sooner</span></div> +<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  BOOST_OUTCOME_TRYV(_read_header());</div> +<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="comment">// If there are no preceding records, we're done</span></div> +<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">if</span>(record_offset < _header.first_known_good)</div> +<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">break</span>;</div> +<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="keyword">auto</span> start_offset = record_offset;</div> +<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">if</span>(start_offset > <span class="keyword">sizeof</span>(_buffer) - <span class="keyword">sizeof</span>(atomic_append_detail::lock_request))</div> +<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  start_offset -= <span class="keyword">sizeof</span>(_buffer) - <span class="keyword">sizeof</span>(atomic_append_detail::lock_request);</div> +<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="keywordflow">else</span></div> +<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  start_offset = <span class="keyword">sizeof</span>(atomic_append_detail::lock_request);</div> +<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordflow">if</span>(start_offset < _header.first_known_good)</div> +<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  start_offset = _header.first_known_good;</div> +<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  assert(record_offset >= start_offset);</div> +<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  assert(record_offset - start_offset <= <span class="keyword">sizeof</span>(_buffer));</div> +<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  BOOST_OUTCOME_TRY(batchread, _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(start_offset, _buffer, (<span class="keywordtype">size_t</span>)(record_offset - start_offset) + <span class="keyword">sizeof</span>(atomic_append_detail::lock_request)));</div> +<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  assert(batchread.second == record_offset - start_offset + <span class="keyword">sizeof</span>(atomic_append_detail::lock_request));</div> +<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keyword">const</span> atomic_append_detail::lock_request *record = (atomic_append_detail::lock_request *) (batchread.first + batchread.second - <span class="keyword">sizeof</span>(atomic_append_detail::lock_request));</div> +<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="keyword">const</span> atomic_append_detail::lock_request *firstrecord = (atomic_append_detail::lock_request *) batchread.first;</div> +<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> </div> +<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="comment">// Skip all completed lock requests or not mentioning any of my entities</span></div> +<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <span class="keywordflow">for</span>(; record >= firstrecord; record_offset -= <span class="keyword">sizeof</span>(atomic_append_detail::lock_request), --record)</div> +<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  {</div> +<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="comment">// If a completed lock request, skip</span></div> +<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keywordflow">if</span>(!record->hash && !record->unique_id)</div> +<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keywordflow">continue</span>;</div> +<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="comment">// If record hash doesn't match contents it's a torn read, reload</span></div> +<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keywordflow">if</span>(!_skip_hashing)</div> +<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  {</div> +<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">if</span>(record->hash != boost_lite::algorithm::hash::fast_hash::hash(((<span class="keywordtype">char</span> *) record) + 16, <span class="keyword">sizeof</span>(atomic_append_detail::lock_request) - 16))</div> +<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <span class="keywordflow">goto</span> reload;</div> +<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  }</div> +<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> </div> +<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="comment">// Does this record lock anything I am locking?</span></div> +<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  <span class="keywordflow">for</span>(<span class="keyword">const</span> <span class="keyword">auto</span> &entity : out.entities)</div> <div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  {</div> -<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="keywordflow">if</span>(record->hash != boost_lite::algorithm::hash::fast_hash::hash(((<span class="keywordtype">char</span> *) record) + 16, <span class="keyword">sizeof</span>(atomic_append_detail::lock_request) - 16))</div> -<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <span class="keywordflow">goto</span> reload;</div> -<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  }</div> -<div class="line"><a name="l00340"></a><span class="lineno"> 340</span> </div> -<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="comment">// Does this record lock anything I am locking?</span></div> -<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="keywordflow">for</span>(<span class="keyword">const</span> <span class="keyword">auto</span> &entity : out.entities)</div> -<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  {</div> -<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> n = 0; n < record->items; n++)</div> -<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  {</div> -<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordflow">if</span>(record->entities[n].value == entity.value)</div> -<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  {</div> -<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="comment">// Is the lock I want exclusive or the lock he wants exclusive?</span></div> -<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="comment">// If so, need to block</span></div> -<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordflow">if</span>(record->entities[n].exclusive || entity.exclusive)</div> -<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">goto</span> beginwait;</div> -<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  }</div> -<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  }</div> -<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  }</div> -<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  }</div> -<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="comment">// None of this batch of records has anything to do with my request, so keep going</span></div> -<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keywordflow">continue</span>;</div> -<div class="line"><a name="l00358"></a><span class="lineno"> 358</span> </div> -<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  beginwait:</div> -<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="comment">// Sleep until this record is freed using a shared lock</span></div> -<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="comment">// on the record in our way. Note there is a race here</span></div> -<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="comment">// between when the lock requester writes the lock</span></div> -<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="comment">// request and when he takes an exclusive lock on it,</span></div> -<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="comment">// so if our shared lock succeeds we need to immediately</span></div> -<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="comment">// unlock and retry based on the data.</span></div> -<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  stl11::this_thread::yield();</div> -<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordflow">if</span>(!spin_not_sleep)</div> -<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  {</div> -<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a> nd;</div> -<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="keywordflow">if</span>(d)</div> -<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  {</div> -<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="keywordflow">if</span>((d).steady)</div> -<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  {</div> -<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  stl11::chrono::nanoseconds ns = stl11::chrono::duration_cast<stl11::chrono::nanoseconds>((began_steady + stl11::chrono::nanoseconds((d).nsecs)) - stl11::chrono::steady_clock::now());</div> -<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="keywordflow">if</span>(ns.count() < 0)</div> -<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  (nd).nsecs = 0;</div> -<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="keywordflow">else</span></div> -<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  (nd).nsecs = ns.count();</div> -<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  }</div> -<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">else</span></div> -<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  (nd) = (d);</div> -<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  }</div> -<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keyword">auto</span> lock_offset = record_offset;</div> -<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="comment">// Set the top bit to use the shadow lock space on Windows</span></div> -<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  lock_offset |= (1ULL << 63);</div> -<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  BOOST_OUTCOME_TRY(record_guard_, _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(lock_offset, <span class="keyword">sizeof</span>(record), <span class="keyword">false</span>, nd));</div> -<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  }</div> -<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="comment">// Make sure we haven't timed out during this wait</span></div> -<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordflow">if</span>(d)</div> -<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  {</div> -<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">if</span>((d).steady)</div> -<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  {</div> -<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keywordflow">if</span>(stl11::chrono::steady_clock::now() >= (began_steady + stl11::chrono::nanoseconds((d).nsecs)))</div> -<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="keywordflow">return</span> make_errored_result<void>(stl11::errc::timed_out);</div> -<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  }</div> -<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="keywordflow">else</span></div> -<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  {</div> -<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="keywordflow">if</span>(stl11::chrono::system_clock::now() >= end_utc)</div> -<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keywordflow">return</span> make_errored_result<void>(stl11::errc::timed_out);</div> -<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  }</div> -<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  }</div> -<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  } <span class="keywordflow">while</span>(record_offset >= _header.first_known_good);</div> -<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keywordflow">return</span> make_valued_result<void>();</div> -<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  }</div> +<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="keywordflow">for</span>(<span class="keywordtype">size_t</span> n = 0; n < record->items; n++)</div> +<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  {</div> +<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="keywordflow">if</span>(record->entities[n].value == entity.value)</div> +<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  {</div> +<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <span class="comment">// Is the lock I want exclusive or the lock he wants exclusive?</span></div> +<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="comment">// If so, need to block</span></div> +<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="keywordflow">if</span>(record->entities[n].exclusive || entity.exclusive)</div> +<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keywordflow">goto</span> beginwait;</div> +<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  }</div> +<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  }</div> +<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  }</div> +<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  }</div> +<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="comment">// None of this batch of records has anything to do with my request, so keep going</span></div> +<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordflow">continue</span>;</div> +<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> </div> +<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  beginwait:</div> +<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="comment">// Sleep until this record is freed using a shared lock</span></div> +<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="comment">// on the record in our way. Note there is a race here</span></div> +<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  <span class="comment">// between when the lock requester writes the lock</span></div> +<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="comment">// request and when he takes an exclusive lock on it,</span></div> +<div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="comment">// so if our shared lock succeeds we need to immediately</span></div> +<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="comment">// unlock and retry based on the data.</span></div> +<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  stl11::this_thread::yield();</div> +<div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordflow">if</span>(!spin_not_sleep)</div> +<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  {</div> +<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a> nd;</div> +<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordflow">if</span>(d)</div> +<div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  {</div> +<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="keywordflow">if</span>((d).steady)</div> +<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  {</div> +<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  stl11::chrono::nanoseconds ns = stl11::chrono::duration_cast<stl11::chrono::nanoseconds>((began_steady + stl11::chrono::nanoseconds((d).nsecs)) - stl11::chrono::steady_clock::now());</div> +<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordflow">if</span>(ns.count() < 0)</div> +<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  (nd).nsecs = 0;</div> +<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  <span class="keywordflow">else</span></div> +<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  (nd).nsecs = ns.count();</div> +<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  }</div> +<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordflow">else</span></div> +<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  (nd) = (d);</div> +<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  }</div> +<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="keyword">auto</span> lock_offset = record_offset;</div> +<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="comment">// Set the top bit to use the shadow lock space on Windows</span></div> +<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  lock_offset |= (1ULL << 63);</div> +<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  BOOST_OUTCOME_TRY(record_guard_, _h.<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(lock_offset, <span class="keyword">sizeof</span>(record), <span class="keyword">false</span>, nd));</div> +<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  }</div> +<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="comment">// Make sure we haven't timed out during this wait</span></div> +<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keywordflow">if</span>(d)</div> +<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  {</div> +<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordflow">if</span>((d).steady)</div> +<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  {</div> +<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">if</span>(stl11::chrono::steady_clock::now() >= (began_steady + stl11::chrono::nanoseconds((d).nsecs)))</div> +<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">return</span> make_errored_result<void>(stl11::errc::timed_out);</div> +<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  }</div> +<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordflow">else</span></div> +<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  {</div> +<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">if</span>(stl11::chrono::system_clock::now() >= end_utc)</div> +<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="keywordflow">return</span> make_errored_result<void>(stl11::errc::timed_out);</div> +<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  }</div> +<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  }</div> +<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  } <span class="keywordflow">while</span>(record_offset >= _header.first_known_good);</div> +<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="keywordflow">return</span> make_valued_result<void>();</div> +<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  }</div> </div><!-- fragment --> </div> </div> @@ -503,39 +503,39 @@ Protected Member Functions</h2></td></tr> </dd> </dl> <dl class="todo"><dt><b><a class="el" href="todo.html#_todo000005">Todo:</a></b></dt><dd>fs_mutex_append needs to check if file still exists after lock is granted, awaiting path fetching. </dd></dl> -<div class="fragment"><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  {</div> -<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  BOOST_AFIO_LOG_FUNCTION_CALL(0);</div> -<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  BOOST_OUTCOME_TRY(ret, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file_handle::file</a>(std::move(lockfile), file_handle::mode::write, file_handle::creation::if_needed, file_handle::caching::temporary));</div> -<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  atomic_append_detail::header header;</div> -<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="comment">// Lock the entire header for exclusive access</span></div> -<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keyword">auto</span> lockresult = ret.try_lock(0, <span class="keyword">sizeof</span>(header), <span class="keyword">true</span>);<span class="comment"></span></div> -<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment"> //! \todo fs_mutex_append needs to check if file still exists after lock is granted, awaiting path fetching.</span></div> -<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="comment"></span> <span class="keywordflow">if</span>(lockresult.has_error())</div> -<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  {</div> -<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">if</span>(lockresult.get_error().value() != ETIMEDOUT)</div> -<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">return</span> lockresult.get_error();</div> -<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="comment">// Somebody else is also using this file</span></div> -<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  }</div> -<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keywordflow">else</span></div> -<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  {</div> -<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="comment">// I am the first person to be using this (stale?) file, so write a new header and truncate</span></div> -<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  BOOST_OUTCOME_TRYV(ret.truncate(<span class="keyword">sizeof</span>(header)));</div> -<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  memset(&header, 0, <span class="keyword">sizeof</span>(header));</div> -<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  header.time_offset = stl11::chrono::system_clock::to_time_t(stl11::chrono::system_clock::now());</div> -<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  header.first_known_good = <span class="keyword">sizeof</span>(header);</div> -<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  header.first_after_hole_punch = <span class="keyword">sizeof</span>(header);</div> -<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">if</span>(!skip_hashing)</div> -<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  header.hash = boost_lite::algorithm::hash::fast_hash::hash(((<span class="keywordtype">char</span> *) &header) + 16, <span class="keyword">sizeof</span>(header) - 16);</div> -<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  BOOST_OUTCOME_TRYV(ret.write(0, (<span class="keywordtype">char</span> *) &header, <span class="keyword">sizeof</span>(header)));</div> -<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  }</div> -<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="comment">// Open a shared lock on last byte in header to prevent other users zomping the file</span></div> -<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  BOOST_OUTCOME_TRY(guard, ret.lock(<span class="keyword">sizeof</span>(header) - 1, 1, <span class="keyword">false</span>));</div> -<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="comment">// Unlock any exclusive lock I gained earlier now</span></div> -<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">if</span>(lockresult)</div> -<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  lockresult.get().unlock();</div> -<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="comment">// The constructor will read and cache the header</span></div> -<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">return</span> atomic_append(std::move(ret), std::move(guard), nfs_compatibility, skip_hashing);</div> -<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</div> +<div class="fragment"><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  {</div> +<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  BOOST_AFIO_LOG_FUNCTION_CALL(0);</div> +<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  BOOST_OUTCOME_TRY(ret, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file_handle::file</a>(std::move(lockfile), file_handle::mode::write, file_handle::creation::if_needed, file_handle::caching::temporary));</div> +<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  atomic_append_detail::header header;</div> +<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// Lock the entire header for exclusive access</span></div> +<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">auto</span> lockresult = ret.try_lock(0, <span class="keyword">sizeof</span>(header), <span class="keyword">true</span>);<span class="comment"></span></div> +<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="comment"> //! \todo fs_mutex_append needs to check if file still exists after lock is granted, awaiting path fetching.</span></div> +<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment"></span> <span class="keywordflow">if</span>(lockresult.has_error())</div> +<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  {</div> +<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">if</span>(lockresult.get_error().value() != ETIMEDOUT)</div> +<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keywordflow">return</span> lockresult.get_error();</div> +<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="comment">// Somebody else is also using this file</span></div> +<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  }</div> +<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">else</span></div> +<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  {</div> +<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="comment">// I am the first person to be using this (stale?) file, so write a new header and truncate</span></div> +<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  BOOST_OUTCOME_TRYV(ret.truncate(<span class="keyword">sizeof</span>(header)));</div> +<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  memset(&header, 0, <span class="keyword">sizeof</span>(header));</div> +<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  header.time_offset = stl11::chrono::system_clock::to_time_t(stl11::chrono::system_clock::now());</div> +<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  header.first_known_good = <span class="keyword">sizeof</span>(header);</div> +<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  header.first_after_hole_punch = <span class="keyword">sizeof</span>(header);</div> +<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">if</span>(!skip_hashing)</div> +<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  header.hash = boost_lite::algorithm::hash::fast_hash::hash(((<span class="keywordtype">char</span> *) &header) + 16, <span class="keyword">sizeof</span>(header) - 16);</div> +<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  BOOST_OUTCOME_TRYV(ret.write(0, (<span class="keywordtype">char</span> *) &header, <span class="keyword">sizeof</span>(header)));</div> +<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  }</div> +<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="comment">// Open a shared lock on last byte in header to prevent other users zomping the file</span></div> +<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  BOOST_OUTCOME_TRY(guard, ret.lock(<span class="keyword">sizeof</span>(header) - 1, 1, <span class="keyword">false</span>));</div> +<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="comment">// Unlock any exclusive lock I gained earlier now</span></div> +<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">if</span>(lockresult)</div> +<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  lockresult.get().unlock();</div> +<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="comment">// The constructor will read and cache the header</span></div> +<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">return</span> atomic_append(std::move(ret), std::move(guard), nfs_compatibility, skip_hashing);</div> +<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  }</div> </div><!-- fragment --> </div> </div> diff --git a/classboost_1_1afio_1_1v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1memory__map.html b/classboost_1_1afio_1_1v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1memory__map.html index 6ff885df..df57e978 100644 --- a/classboost_1_1afio_1_1v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1memory__map.html +++ b/classboost_1_1afio_1_1v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1memory__map.html @@ -313,100 +313,100 @@ template<template< class > class Hasher = boost_lite::algorithm::hash:: </div><div class="memdoc"> <p>Initialises a shared filing system mutex using the file at <em>lockfile</em> and an optional fallback lock. </p> <dl class="section user"><dt>Errors returnable</dt><dd>Awaiting the clang result<> AST parser which auto generates all the error codes which could occur, but a particularly important one is <code>EBUSY</code> which will be returned if the memory map lock is already in a degraded state (i.e. just use the fallback lock directly). </dd></dl> -<div class="fragment"><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  {</div> -<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  BOOST_AFIO_LOG_FUNCTION_CALL(0);</div> -<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">try</span></div> -<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  {</div> -<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  BOOST_OUTCOME_TRY(ret, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file_handle::file</a>(std::move(lockfile), file_handle::mode::write, file_handle::creation::if_needed, file_handle::caching::reads));</div> -<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  file_handle temph;</div> -<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="comment">// Am I the first person to this file? Lock the inuse exclusively</span></div> -<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keyword">auto</span> lockinuse = ret.try_lock(_lockinuseoffset, 1, <span class="keyword">true</span>);</div> -<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  file_handle::extent_guard mapinuse;</div> -<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">if</span>(lockinuse.has_error())</div> -<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  {</div> -<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">if</span>(lockinuse.get_error().value() != ETIMEDOUT)</div> -<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">return</span> lockinuse.get_error();</div> -<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="comment">// Somebody else is also using this file, so try to read the hash index file I ought to use</span></div> -<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  lockinuse = ret.lock(_lockinuseoffset, 1, <span class="keyword">false</span>); <span class="comment">// last byte shared access</span></div> -<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keywordtype">char</span> buffer[65536];</div> -<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  memset(buffer, 0, <span class="keyword">sizeof</span>(buffer));</div> -<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  {</div> -<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  BOOST_OUTCOME_TRY(_, ret.read(0, buffer, 65535));</div> -<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  (void) _;</div> -<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  }</div> -<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  fixme_path::value_type *temphpath = (fixme_path::value_type *) buffer;</div> -<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  result<file_handle> _temph;</div> -<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="comment">// If path is zeroed, fall back onto backup lock</span></div> -<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">if</span>(!buffer[0])</div> -<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">goto</span> use_fall_back_lock;</div> -<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">else</span></div> -<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  _temph = <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file_handle::file</a>(temphpath, file_handle::mode::write, file_handle::creation::open_existing, file_handle::caching::temporary);</div> -<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="comment">// If temp file doesn't exist, I am on a different machine</span></div> -<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="keywordflow">if</span>(!_temph)</div> -<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  {</div> -<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="comment">// Zop the path so any new entrants into this lock will go to the fallback lock</span></div> -<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  memset(buffer, 0, 4096);</div> -<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  (void) ret.write(0, buffer, 4096);</div> -<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  use_fall_back_lock:</div> -<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="comment">// I am guaranteed that all mmap users have locked the second last byte</span></div> -<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="comment">// and will unlock it once everyone has stopped using the mmap, so make</span></div> -<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="comment">// absolutely sure the mmap is not in use by anyone by taking an exclusive</span></div> -<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="comment">// lock on the second final byte</span></div> -<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  BOOST_OUTCOME_TRY(mapinuse2, ret.lock(_mapinuseoffset, 1, <span class="keyword">true</span>));</div> -<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="comment">// Release the exclusive lock and tell caller to just use the fallback lock directly</span></div> -<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  <span class="keywordflow">return</span> make_errored_result<memory_map>(stl11::errc::device_or_resource_busy);</div> +<div class="fragment"><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  {</div> +<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  BOOST_AFIO_LOG_FUNCTION_CALL(0);</div> +<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">try</span></div> +<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  {</div> +<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  BOOST_OUTCOME_TRY(ret, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file_handle::file</a>(std::move(lockfile), file_handle::mode::write, file_handle::creation::if_needed, file_handle::caching::reads));</div> +<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  file_handle temph;</div> +<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="comment">// Am I the first person to this file? Lock the inuse exclusively</span></div> +<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keyword">auto</span> lockinuse = ret.try_lock(_lockinuseoffset, 1, <span class="keyword">true</span>);</div> +<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  file_handle::extent_guard mapinuse;</div> +<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">if</span>(lockinuse.has_error())</div> +<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  {</div> +<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">if</span>(lockinuse.get_error().value() != ETIMEDOUT)</div> +<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">return</span> lockinuse.get_error();</div> +<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="comment">// Somebody else is also using this file, so try to read the hash index file I ought to use</span></div> +<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  lockinuse = ret.lock(_lockinuseoffset, 1, <span class="keyword">false</span>); <span class="comment">// last byte shared access</span></div> +<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordtype">char</span> buffer[65536];</div> +<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  memset(buffer, 0, <span class="keyword">sizeof</span>(buffer));</div> +<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  {</div> +<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  BOOST_OUTCOME_TRY(_, ret.read(0, buffer, 65535));</div> +<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  (void) _;</div> +<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  }</div> +<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  fixme_path::value_type *temphpath = (fixme_path::value_type *) buffer;</div> +<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  result<file_handle> _temph;</div> +<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="comment">// If path is zeroed, fall back onto backup lock</span></div> +<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">if</span>(!buffer[0])</div> +<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">goto</span> use_fall_back_lock;</div> +<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordflow">else</span></div> +<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  _temph = <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file_handle::file</a>(temphpath, file_handle::mode::write, file_handle::creation::open_existing, file_handle::caching::temporary);</div> +<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// If temp file doesn't exist, I am on a different machine</span></div> +<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordflow">if</span>(!_temph)</div> +<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  {</div> +<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="comment">// Zop the path so any new entrants into this lock will go to the fallback lock</span></div> +<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  memset(buffer, 0, 4096);</div> +<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  (void) ret.write(0, buffer, 4096);</div> +<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  use_fall_back_lock:</div> +<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="comment">// I am guaranteed that all mmap users have locked the second last byte</span></div> +<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  <span class="comment">// and will unlock it once everyone has stopped using the mmap, so make</span></div> +<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="comment">// absolutely sure the mmap is not in use by anyone by taking an exclusive</span></div> +<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="comment">// lock on the second final byte</span></div> +<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  BOOST_OUTCOME_TRY(mapinuse2, ret.lock(_mapinuseoffset, 1, <span class="keyword">true</span>));</div> +<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="comment">// Release the exclusive lock and tell caller to just use the fallback lock directly</span></div> +<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">return</span> make_errored_result<memory_map>(stl11::errc::device_or_resource_busy);</div> +<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  }</div> +<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">else</span></div> +<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  {</div> +<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="comment">// Mark the map as being in use by me too</span></div> +<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  BOOST_OUTCOME_TRY(mapinuse2, ret.lock(_mapinuseoffset, 1, <span class="keyword">false</span>));</div> +<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  mapinuse = std::move(mapinuse2);</div> +<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  temph = std::move(_temph.get());</div> <div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  }</div> -<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keywordflow">else</span></div> -<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  {</div> -<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="comment">// Mark the map as being in use by me too</span></div> -<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  BOOST_OUTCOME_TRY(mapinuse2, ret.lock(_mapinuseoffset, 1, <span class="keyword">false</span>));</div> -<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  mapinuse = std::move(mapinuse2);</div> -<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  temph = std::move(_temph.get());</div> -<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  }</div> -<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="comment">// Map the files into memory, being very careful that the lock file is only ever mapped read only</span></div> -<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="comment">// as some OSs can get confused if you use non-mmaped writes on a region mapped for writing.</span></div> -<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  BOOST_OUTCOME_TRY(hsection, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section_handle::section</a>(ret, 0, section_handle::flag::read));</div> -<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  BOOST_OUTCOME_TRY(temphsection, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section_handle::section</a>(temph, HashIndexSize));</div> -<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  BOOST_OUTCOME_TRY(hmap, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1map__handle.html#af81ff3998b175918d61dc50b7e8cc403">map_handle::map</a>(hsection, 0, 0, section_handle::flag::read));</div> -<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  BOOST_OUTCOME_TRY(temphmap, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1map__handle.html#af81ff3998b175918d61dc50b7e8cc403">map_handle::map</a>(temphsection, HashIndexSize));</div> -<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordflow">return</span> memory_map(std::move(ret), std::move(temph), std::move(lockinuse.get()), std::move(mapinuse), std::move(hmap), std::move(temphmap), fallbacklock);</div> -<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  }</div> -<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordflow">else</span></div> -<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  {</div> -<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="comment">// I am the first person to be using this (stale?) file, so create a new hash index file and write its path</span></div> -<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  BOOST_OUTCOME_TRYV(ret.truncate(0));</div> -<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  BOOST_OUTCOME_TRY(_temph, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a603b0827a9ae139b8f5806b1297fa5f0">file_handle::random_file</a>(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>()));</div> -<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  temph = std::move(_temph);</div> -<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keyword">auto</span> temppath(temph.path());</div> -<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  BOOST_OUTCOME_TRYV(temph.truncate(HashIndexSize));</div> -<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="comment">/* Linux appears to have a race where:</span></div> -<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <span class="comment"> 1. This process creates a new file and fallocate's its maximum extent.</span></div> -<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="comment"> 2. Another process opens this file and mmaps it.</span></div> -<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="comment"> 3. The other process tries to read from the mmap, and gets a SIGBUS for its efforts.</span></div> -<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="comment"></span></div> -<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="comment"> I tried writing zeros using write after the fallocate, but it appears not to help, so</span></div> -<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="comment"> for Linux compatibility we will have to mmap before publishing the path of the hash index.</span></div> -<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="comment"> */</span></div> -<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="comment">// Map the files into memory, being very careful that the lock file is only ever mapped read only</span></div> -<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="comment">// as some OSs can get confused if you use non-mmaped writes on a region mapped for writing.</span></div> -<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  BOOST_OUTCOME_TRY(temphsection, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section_handle::section</a>(temph, HashIndexSize));</div> -<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  BOOST_OUTCOME_TRY(temphmap, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1map__handle.html#af81ff3998b175918d61dc50b7e8cc403">map_handle::map</a>(temphsection, HashIndexSize));</div> -<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="comment">// Force page allocation now</span></div> -<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  memset(temphmap.address(), 0, HashIndexSize);</div> -<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="comment">// Write the path of my new hash index file and convert my lock to a shared one</span></div> -<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  BOOST_OUTCOME_TRYV(ret.write(0, (<span class="keyword">const</span> <span class="keywordtype">char</span> *) temppath.c_str(), temppath.native().size() * <span class="keyword">sizeof</span>(*temppath.c_str())));</div> -<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  BOOST_OUTCOME_TRY(hsection, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section_handle::section</a>(ret, 0, section_handle::flag::read));</div> -<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  BOOST_OUTCOME_TRY(hmap, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1map__handle.html#af81ff3998b175918d61dc50b7e8cc403">map_handle::map</a>(hsection, 0, 0, section_handle::flag::read));</div> -<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="comment">// Convert exclusive whole file lock into lock in use</span></div> -<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  BOOST_OUTCOME_TRY(mapinuse2, ret.lock(_mapinuseoffset, 1, <span class="keyword">false</span>));</div> -<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  BOOST_OUTCOME_TRY(lockinuse2, ret.lock(_lockinuseoffset, 1, <span class="keyword">false</span>));</div> -<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  mapinuse = std::move(mapinuse2);</div> -<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  lockinuse = std::move(lockinuse2);</div> -<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordflow">return</span> memory_map(std::move(ret), std::move(temph), std::move(lockinuse.get()), std::move(mapinuse), std::move(hmap), std::move(temphmap), fallbacklock);</div> -<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  }</div> -<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  }</div> -<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  BOOST_OUTCOME_CATCH_ALL_EXCEPTION_TO_RESULT</div> -<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  }</div> +<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="comment">// Map the files into memory, being very careful that the lock file is only ever mapped read only</span></div> +<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="comment">// as some OSs can get confused if you use non-mmaped writes on a region mapped for writing.</span></div> +<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  BOOST_OUTCOME_TRY(hsection, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section_handle::section</a>(ret, 0, section_handle::flag::read));</div> +<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  BOOST_OUTCOME_TRY(temphsection, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section_handle::section</a>(temph, HashIndexSize));</div> +<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  BOOST_OUTCOME_TRY(hmap, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1map__handle.html#af81ff3998b175918d61dc50b7e8cc403">map_handle::map</a>(hsection, 0, 0, section_handle::flag::read));</div> +<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  BOOST_OUTCOME_TRY(temphmap, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1map__handle.html#af81ff3998b175918d61dc50b7e8cc403">map_handle::map</a>(temphsection, HashIndexSize));</div> +<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keywordflow">return</span> memory_map(std::move(ret), std::move(temph), std::move(lockinuse.get()), std::move(mapinuse), std::move(hmap), std::move(temphmap), fallbacklock);</div> +<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  }</div> +<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">else</span></div> +<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  {</div> +<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="comment">// I am the first person to be using this (stale?) file, so create a new hash index file and write its path</span></div> +<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  BOOST_OUTCOME_TRYV(ret.truncate(0));</div> +<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  BOOST_OUTCOME_TRY(_temph, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a603b0827a9ae139b8f5806b1297fa5f0">file_handle::random_file</a>(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>()));</div> +<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  temph = std::move(_temph);</div> +<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keyword">auto</span> temppath(temph.path());</div> +<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  BOOST_OUTCOME_TRYV(temph.truncate(HashIndexSize));</div> +<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="comment">/* Linux appears to have a race where:</span></div> +<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="comment"> 1. This process creates a new file and fallocate's its maximum extent.</span></div> +<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="comment"> 2. Another process opens this file and mmaps it.</span></div> +<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> <span class="comment"> 3. The other process tries to read from the mmap, and gets a SIGBUS for its efforts.</span></div> +<div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="comment"></span></div> +<div class="line"><a name="l00279"></a><span class="lineno"> 279</span> <span class="comment"> I tried writing zeros using write after the fallocate, but it appears not to help, so</span></div> +<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="comment"> for Linux compatibility we will have to mmap before publishing the path of the hash index.</span></div> +<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="comment"> */</span></div> +<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  <span class="comment">// Map the files into memory, being very careful that the lock file is only ever mapped read only</span></div> +<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="comment">// as some OSs can get confused if you use non-mmaped writes on a region mapped for writing.</span></div> +<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  BOOST_OUTCOME_TRY(temphsection, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section_handle::section</a>(temph, HashIndexSize));</div> +<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  BOOST_OUTCOME_TRY(temphmap, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1map__handle.html#af81ff3998b175918d61dc50b7e8cc403">map_handle::map</a>(temphsection, HashIndexSize));</div> +<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="comment">// Force page allocation now</span></div> +<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  memset(temphmap.address(), 0, HashIndexSize);</div> +<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="comment">// Write the path of my new hash index file and convert my lock to a shared one</span></div> +<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  BOOST_OUTCOME_TRYV(ret.write(0, (<span class="keyword">const</span> <span class="keywordtype">char</span> *) temppath.c_str(), temppath.native().size() * <span class="keyword">sizeof</span>(*temppath.c_str())));</div> +<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  BOOST_OUTCOME_TRY(hsection, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section_handle::section</a>(ret, 0, section_handle::flag::read));</div> +<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  BOOST_OUTCOME_TRY(hmap, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1map__handle.html#af81ff3998b175918d61dc50b7e8cc403">map_handle::map</a>(hsection, 0, 0, section_handle::flag::read));</div> +<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="comment">// Convert exclusive whole file lock into lock in use</span></div> +<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  BOOST_OUTCOME_TRY(mapinuse2, ret.lock(_mapinuseoffset, 1, <span class="keyword">false</span>));</div> +<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  BOOST_OUTCOME_TRY(lockinuse2, ret.lock(_lockinuseoffset, 1, <span class="keyword">false</span>));</div> +<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  mapinuse = std::move(mapinuse2);</div> +<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  lockinuse = std::move(lockinuse2);</div> +<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordflow">return</span> memory_map(std::move(ret), std::move(temph), std::move(lockinuse.get()), std::move(mapinuse), std::move(hmap), std::move(temphmap), fallbacklock);</div> +<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  }</div> +<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  }</div> +<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  BOOST_OUTCOME_CATCH_ALL_EXCEPTION_TO_RESULT</div> +<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  }</div> </div><!-- fragment --> </div> </div> diff --git a/classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html b/classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html index 468d923a..64328d58 100644 --- a/classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html +++ b/classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html @@ -545,13 +545,13 @@ template<class CompletionRoutine , class BuffersType > </div> </div><div class="memdoc"> <p>Create an async file handle opening access to a file on path using the given io_service.</p> <dl class="section user"><dt>Errors returnable</dt><dd>Any of the values POSIX open() or CreateFile() can return. </dd></dl> -<div class="fragment"><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  {</div> -<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// Open it overlapped, otherwise no difference.</span></div> -<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file_handle::file</a>(std::move(_path), std::move(_mode), std::move(_creation), std::move(_caching), <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a> | flag::overlapped));</div> -<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html#a45e3460664113cfbc0898f084057e54c" title="Default constructor.">async_file_handle</a> ret(std::move(v));</div> -<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  ret._service = &<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a8f008c58eacfba8efdb2f4ec88322fb9" title="The i/o service this handle is attached to, if any.">service</a>;</div> -<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> std::move(ret);</div> -<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div> +<div class="fragment"><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  {</div> +<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">// Open it overlapped, otherwise no difference.</span></div> +<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file_handle::file</a>(std::move(_path), std::move(_mode), std::move(_creation), std::move(_caching), <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a> | flag::overlapped));</div> +<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html#a45e3460664113cfbc0898f084057e54c" title="Default constructor.">async_file_handle</a> ret(std::move(v));</div> +<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  ret._service = &<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a8f008c58eacfba8efdb2f4ec88322fb9" title="The i/o service this handle is attached to, if any.">service</a>;</div> +<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">return</span> std::move(ret);</div> +<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div> </div><!-- fragment --> </div> </div> @@ -606,22 +606,22 @@ template<class CompletionRoutine , class BuffersType > </div> </div><div class="memdoc"> <p>Create an async file handle creating a randomly named file on a path. The file is opened exclusively with <code>creation::only_if_not_exist</code> so it will never collide with nor overwrite any existing file. Note also that caching defaults to temporary which hints to the OS to only flush changes to physical storage as lately as possible.</p> <dl class="section user"><dt>Errors returnable</dt><dd>Any of the values POSIX open() or CreateFile() can return. </dd></dl> -<div class="fragment"><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  {</div> -<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">try</span></div> -<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  {</div> -<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  result<async_file_handle> ret;</div> -<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">do</span></div> -<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  {</div> -<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">auto</span> randomname = <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html#a051e8deb72941b3460811a1cf5f29915" title="Returns a cryptographically random string capable of being used as a filename. Essentially random_fil...">utils::random_string</a>(32);</div> -<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  randomname.append(<span class="stringliteral">".random"</span>);</div> -<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  ret = <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html#a12b3005187cfe96eb2af7b19fffbb284">async_file</a>(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a8f008c58eacfba8efdb2f4ec88322fb9" title="The i/o service this handle is attached to, if any.">service</a>, dirpath / randomname, _mode, creation::only_if_not_exist, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> -<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keywordflow">if</span>(!ret && ret.get_error().value() != EEXIST)</div> -<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">return</span> ret;</div> -<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  } <span class="keywordflow">while</span>(!ret);</div> -<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">return</span> ret;</div> -<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  }</div> -<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  BOOST_OUTCOME_CATCH_ALL_EXCEPTION_TO_RESULT</div> -<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div> +<div class="fragment"><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  {</div> +<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">try</span></div> +<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  {</div> +<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  result<async_file_handle> ret;</div> +<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keywordflow">do</span></div> +<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  {</div> +<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keyword">auto</span> randomname = <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html#a051e8deb72941b3460811a1cf5f29915" title="Returns a cryptographically random string capable of being used as a filename. Essentially random_fil...">utils::random_string</a>(32);</div> +<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  randomname.append(<span class="stringliteral">".random"</span>);</div> +<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  ret = <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html#a12b3005187cfe96eb2af7b19fffbb284">async_file</a>(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a8f008c58eacfba8efdb2f4ec88322fb9" title="The i/o service this handle is attached to, if any.">service</a>, dirpath / randomname, _mode, creation::only_if_not_exist, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> +<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">if</span>(!ret && ret.get_error().value() != EEXIST)</div> +<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">return</span> ret;</div> +<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  } <span class="keywordflow">while</span>(!ret);</div> +<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">return</span> ret;</div> +<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  }</div> +<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  BOOST_OUTCOME_CATCH_ALL_EXCEPTION_TO_RESULT</div> +<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  }</div> </div><!-- fragment --> </div> </div> @@ -731,9 +731,9 @@ template<class CompletionRoutine > </div> <p>Create an async file handle creating the named file on some path which the OS declares to be suitable for temporary files. Most OSs are very lazy about flushing changes made to these temporary files. Note the default flags are to have the newly created file deleted on first handle close. Note also that an empty name is equivalent to calling <code>async_random_file(fixme_temporary_files_directory())</code> and the creation parameter is ignored.</p> <dl class="section note"><dt>Note</dt><dd>If the temporary file you are creating is not going to have its path sent to another process for usage, this is the WRONG function to use. Use <code>temp_inode()</code> instead, it is far more secure.</dd></dl> <dl class="section user"><dt>Errors returnable</dt><dd>Any of the values POSIX open() or CreateFile() can return. </dd></dl> -<div class="fragment"><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  {</div> -<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">return</span> name.empty() ? <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html#a46d1de34eb162674eec85decaef44799">async_random_file</a>(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a8f008c58eacfba8efdb2f4ec88322fb9" title="The i/o service this handle is attached to, if any.">service</a>, <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>(), _mode, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>) : <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html#a12b3005187cfe96eb2af7b19fffbb284">async_file</a>(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a8f008c58eacfba8efdb2f4ec88322fb9" title="The i/o service this handle is attached to, if any.">service</a>, <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>() / name, _mode, _creation, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> -<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  }</div> +<div class="fragment"><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {</div> +<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">return</span> name.empty() ? <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html#a46d1de34eb162674eec85decaef44799">async_random_file</a>(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a8f008c58eacfba8efdb2f4ec88322fb9" title="The i/o service this handle is attached to, if any.">service</a>, <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>(), _mode, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>) : <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html#a12b3005187cfe96eb2af7b19fffbb284">async_file</a>(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a8f008c58eacfba8efdb2f4ec88322fb9" title="The i/o service this handle is attached to, if any.">service</a>, <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>() / name, _mode, _creation, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> +<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  }</div> </div><!-- fragment --> </div> </div> @@ -782,13 +782,13 @@ template<class CompletionRoutine > </div> </div><div class="memdoc"> <p><em>Securely</em> create an async file handle creating a temporary anonymous inode in the filesystem referred to by <em>dirpath</em>. The inode created has no name nor accessible path on the filing system and ceases to exist as soon as the last handle is closed, making it ideal for use as a temporary file where other processes do not need to have access to its contents via some path on the filing system (a classic use case is for backing shared memory maps).</p> <dl class="section user"><dt>Errors returnable</dt><dd>Any of the values POSIX open() or CreateFile() can return. </dd></dl> -<div class="fragment"><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  {</div> -<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="comment">// Open it overlapped, otherwise no difference.</span></div> -<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a841ba6c013b21dba15bceb472c3cbecf">file_handle::temp_inode</a>(std::move(dirpath), std::move(_mode), <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a> | flag::overlapped));</div> -<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html#a45e3460664113cfbc0898f084057e54c" title="Default constructor.">async_file_handle</a> ret(std::move(v));</div> -<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  ret._service = &<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a8f008c58eacfba8efdb2f4ec88322fb9" title="The i/o service this handle is attached to, if any.">service</a>;</div> -<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">return</span> std::move(ret);</div> -<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  }</div> +<div class="fragment"><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  {</div> +<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="comment">// Open it overlapped, otherwise no difference.</span></div> +<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a841ba6c013b21dba15bceb472c3cbecf">file_handle::temp_inode</a>(std::move(dirpath), std::move(_mode), <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a> | flag::overlapped));</div> +<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1async__file__handle.html#a45e3460664113cfbc0898f084057e54c" title="Default constructor.">async_file_handle</a> ret(std::move(v));</div> +<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  ret._service = &<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a8f008c58eacfba8efdb2f4ec88322fb9" title="The i/o service this handle is attached to, if any.">service</a>;</div> +<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">return</span> std::move(ret);</div> +<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  }</div> </div><!-- fragment --> </div> </div> @@ -1128,12 +1128,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  {</div> -<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> -<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> -<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  bytes += i.second;</div> -<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">false</span>, std::move(d));</div> -<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  }</div> +<div class="fragment"><div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  {</div> +<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> +<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> +<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  bytes += i.second;</div> +<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">false</span>, std::move(d));</div> +<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  }</div> </div><!-- fragment --> </div> </div> @@ -1169,12 +1169,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  {</div> -<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> -<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> -<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  bytes += i.second;</div> -<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">true</span>, std::move(d));</div> -<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  }</div> +<div class="fragment"><div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  {</div> +<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> +<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> +<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  bytes += i.second;</div> +<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">true</span>, std::move(d));</div> +<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  }</div> </div><!-- fragment --> </div> </div> @@ -1223,22 +1223,22 @@ For portability, you can only assume that barriers write order for a single hand </div><div class="memdoc"> <p>Create a file handle creating a randomly named file on a path. The file is opened exclusively with <code>creation::only_if_not_exist</code> so it will never collide with nor overwrite any existing file. Note also that caching defaults to temporary which hints to the OS to only flush changes to physical storage as lately as possible.</p> <dl class="section user"><dt>Errors returnable</dt><dd>Any of the values POSIX open() or CreateFile() can return. </dd></dl> -<div class="fragment"><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  {</div> -<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">try</span></div> -<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  {</div> -<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  result<file_handle> ret;</div> -<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">do</span></div> -<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  {</div> -<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">auto</span> randomname = <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html#a051e8deb72941b3460811a1cf5f29915" title="Returns a cryptographically random string capable of being used as a filename. Essentially random_fil...">utils::random_string</a>(32);</div> -<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  randomname.append(<span class="stringliteral">".random"</span>);</div> -<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  ret = <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file</a>(dirpath / randomname, _mode, creation::only_if_not_exist, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> -<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">if</span>(!ret && ret.get_error().value() != EEXIST)</div> -<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">return</span> ret;</div> -<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  } <span class="keywordflow">while</span>(!ret);</div> -<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> ret;</div> -<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div> -<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  BOOST_OUTCOME_CATCH_ALL_EXCEPTION_TO_RESULT</div> -<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div> +<div class="fragment"><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {</div> +<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">try</span></div> +<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  {</div> +<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  result<file_handle> ret;</div> +<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">do</span></div> +<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  {</div> +<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">auto</span> randomname = <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html#a051e8deb72941b3460811a1cf5f29915" title="Returns a cryptographically random string capable of being used as a filename. Essentially random_fil...">utils::random_string</a>(32);</div> +<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  randomname.append(<span class="stringliteral">".random"</span>);</div> +<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  ret = <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file</a>(dirpath / randomname, _mode, creation::only_if_not_exist, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> +<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">if</span>(!ret && ret.get_error().value() != EEXIST)</div> +<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">return</span> ret;</div> +<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  } <span class="keywordflow">while</span>(!ret);</div> +<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">return</span> ret;</div> +<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  }</div> +<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  BOOST_OUTCOME_CATCH_ALL_EXCEPTION_TO_RESULT</div> +<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div> </div><!-- fragment --> </div> </div> @@ -1332,12 +1332,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  {</div> -<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a811166f987d82fcd3c85c6aa0b9b4f34" title="The scatter buffer type used by this handle.">buffer_type</a> _reqs[1] = {{data, bytes}};</div> -<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  io_request<buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a9085d19b744d1330eafa51fffc49e104" title="The scatter buffers type used by this handle.">buffers_type</a>(_reqs), offset);</div> -<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(reqs, d));</div> -<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keywordflow">return</span> *v.data();</div> -<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  }</div> +<div class="fragment"><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  {</div> +<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a811166f987d82fcd3c85c6aa0b9b4f34" title="The scatter buffer type used by this handle.">buffer_type</a> _reqs[1] = {{data, bytes}};</div> +<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  io_request<buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a9085d19b744d1330eafa51fffc49e104" title="The scatter buffers type used by this handle.">buffers_type</a>(_reqs), offset);</div> +<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(reqs, d));</div> +<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">return</span> *v.data();</div> +<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  }</div> </div><!-- fragment --> </div> </div> @@ -1482,9 +1482,9 @@ For portability, you can only assume that barriers write order for a single hand <p>Create a file handle creating the named file on some path which the OS declares to be suitable for temporary files. Most OSs are very lazy about flushing changes made to these temporary files. Note the default flags are to have the newly created file deleted on first handle close. Note also that an empty name is equivalent to calling <code>random_file(fixme_temporary_files_directory())</code> and the creation parameter is ignored.</p> <dl class="section note"><dt>Note</dt><dd>If the temporary file you are creating is not going to have its path sent to another process for usage, this is the WRONG function to use. Use <code>temp_inode()</code> instead, it is far more secure.</dd></dl> <dl class="section user"><dt>Errors returnable</dt><dd>Any of the values POSIX open() or CreateFile() can return. </dd></dl> -<div class="fragment"><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  {</div> -<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">return</span> name.empty() ? <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a603b0827a9ae139b8f5806b1297fa5f0">random_file</a>(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>(), _mode, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>) : <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file</a>(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>() / name, _mode, _creation, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> -<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  }</div> +<div class="fragment"><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  {</div> +<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">return</span> name.empty() ? <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a603b0827a9ae139b8f5806b1297fa5f0">random_file</a>(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>(), _mode, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>) : <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file</a>(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>() / name, _mode, _creation, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> +<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  }</div> </div><!-- fragment --> </div> </div> @@ -1601,7 +1601,7 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00607"></a><span class="lineno"> 607</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(offset, bytes, exclusive, <a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a>(stl11::chrono::seconds(0))); }</div> +<div class="fragment"><div class="line"><a name="l00600"></a><span class="lineno"> 600</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(offset, bytes, exclusive, <a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a>(stl11::chrono::seconds(0))); }</div> </div><!-- fragment --> </div> </div> @@ -1765,12 +1765,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  {</div> -<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#acbb752522c90f5e4596b8a4f07e2fa80" title="The gather buffer type used by this handle.">const_buffer_type</a> _reqs[1] = {{data, bytes}};</div> -<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  io_request<const_buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a692ba33b1e443510a791ff43f37d73cd" title="The gather buffers type used by this handle.">const_buffers_type</a>(_reqs), offset);</div> -<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a8890b6a6046fb562f9f0ab943b79dfb4" title="Write data to the open handle.">write</a>(reqs, d));</div> -<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keywordflow">return</span> *v.data();</div> -<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  }</div> +<div class="fragment"><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  {</div> +<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#acbb752522c90f5e4596b8a4f07e2fa80" title="The gather buffer type used by this handle.">const_buffer_type</a> _reqs[1] = {{data, bytes}};</div> +<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  io_request<const_buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a692ba33b1e443510a791ff43f37d73cd" title="The gather buffers type used by this handle.">const_buffers_type</a>(_reqs), offset);</div> +<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a8890b6a6046fb562f9f0ab943b79dfb4" title="Write data to the open handle.">write</a>(reqs, d));</div> +<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">return</span> *v.data();</div> +<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  }</div> </div><!-- fragment --> </div> </div> diff --git a/classboost_1_1afio_1_1v2__xxx_1_1file__handle.html b/classboost_1_1afio_1_1v2__xxx_1_1file__handle.html index a01dd9f6..e5c9a6c0 100644 --- a/classboost_1_1afio_1_1v2__xxx_1_1file__handle.html +++ b/classboost_1_1afio_1_1v2__xxx_1_1file__handle.html @@ -675,12 +675,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  {</div> -<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> -<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> -<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  bytes += i.second;</div> -<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">false</span>, std::move(d));</div> -<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  }</div> +<div class="fragment"><div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  {</div> +<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> +<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> +<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  bytes += i.second;</div> +<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">false</span>, std::move(d));</div> +<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  }</div> </div><!-- fragment --> </div> </div> @@ -716,12 +716,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  {</div> -<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> -<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> -<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  bytes += i.second;</div> -<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">true</span>, std::move(d));</div> -<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  }</div> +<div class="fragment"><div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  {</div> +<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> +<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> +<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  bytes += i.second;</div> +<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">true</span>, std::move(d));</div> +<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  }</div> </div><!-- fragment --> </div> </div> @@ -770,22 +770,22 @@ For portability, you can only assume that barriers write order for a single hand </div><div class="memdoc"> <p>Create a file handle creating a randomly named file on a path. The file is opened exclusively with <code>creation::only_if_not_exist</code> so it will never collide with nor overwrite any existing file. Note also that caching defaults to temporary which hints to the OS to only flush changes to physical storage as lately as possible.</p> <dl class="section user"><dt>Errors returnable</dt><dd>Any of the values POSIX open() or CreateFile() can return. </dd></dl> -<div class="fragment"><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  {</div> -<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">try</span></div> -<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  {</div> -<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  result<file_handle> ret;</div> -<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">do</span></div> -<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  {</div> -<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">auto</span> randomname = <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html#a051e8deb72941b3460811a1cf5f29915" title="Returns a cryptographically random string capable of being used as a filename. Essentially random_fil...">utils::random_string</a>(32);</div> -<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  randomname.append(<span class="stringliteral">".random"</span>);</div> -<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  ret = <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file</a>(dirpath / randomname, _mode, creation::only_if_not_exist, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> -<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">if</span>(!ret && ret.get_error().value() != EEXIST)</div> -<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">return</span> ret;</div> -<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  } <span class="keywordflow">while</span>(!ret);</div> -<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> ret;</div> -<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div> -<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  BOOST_OUTCOME_CATCH_ALL_EXCEPTION_TO_RESULT</div> -<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div> +<div class="fragment"><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {</div> +<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">try</span></div> +<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  {</div> +<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  result<file_handle> ret;</div> +<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">do</span></div> +<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  {</div> +<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">auto</span> randomname = <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html#a051e8deb72941b3460811a1cf5f29915" title="Returns a cryptographically random string capable of being used as a filename. Essentially random_fil...">utils::random_string</a>(32);</div> +<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  randomname.append(<span class="stringliteral">".random"</span>);</div> +<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  ret = <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file</a>(dirpath / randomname, _mode, creation::only_if_not_exist, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> +<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">if</span>(!ret && ret.get_error().value() != EEXIST)</div> +<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">return</span> ret;</div> +<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  } <span class="keywordflow">while</span>(!ret);</div> +<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">return</span> ret;</div> +<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  }</div> +<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  BOOST_OUTCOME_CATCH_ALL_EXCEPTION_TO_RESULT</div> +<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div> </div><!-- fragment --> </div> </div> @@ -879,12 +879,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  {</div> -<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a811166f987d82fcd3c85c6aa0b9b4f34" title="The scatter buffer type used by this handle.">buffer_type</a> _reqs[1] = {{data, bytes}};</div> -<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  io_request<buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a9085d19b744d1330eafa51fffc49e104" title="The scatter buffers type used by this handle.">buffers_type</a>(_reqs), offset);</div> -<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(reqs, d));</div> -<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keywordflow">return</span> *v.data();</div> -<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  }</div> +<div class="fragment"><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  {</div> +<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a811166f987d82fcd3c85c6aa0b9b4f34" title="The scatter buffer type used by this handle.">buffer_type</a> _reqs[1] = {{data, bytes}};</div> +<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  io_request<buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a9085d19b744d1330eafa51fffc49e104" title="The scatter buffers type used by this handle.">buffers_type</a>(_reqs), offset);</div> +<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(reqs, d));</div> +<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">return</span> *v.data();</div> +<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  }</div> </div><!-- fragment --> </div> </div> @@ -1029,9 +1029,9 @@ For portability, you can only assume that barriers write order for a single hand <p>Create a file handle creating the named file on some path which the OS declares to be suitable for temporary files. Most OSs are very lazy about flushing changes made to these temporary files. Note the default flags are to have the newly created file deleted on first handle close. Note also that an empty name is equivalent to calling <code>random_file(fixme_temporary_files_directory())</code> and the creation parameter is ignored.</p> <dl class="section note"><dt>Note</dt><dd>If the temporary file you are creating is not going to have its path sent to another process for usage, this is the WRONG function to use. Use <code>temp_inode()</code> instead, it is far more secure.</dd></dl> <dl class="section user"><dt>Errors returnable</dt><dd>Any of the values POSIX open() or CreateFile() can return. </dd></dl> -<div class="fragment"><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  {</div> -<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">return</span> name.empty() ? <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a603b0827a9ae139b8f5806b1297fa5f0">random_file</a>(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>(), _mode, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>) : <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file</a>(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>() / name, _mode, _creation, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> -<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  }</div> +<div class="fragment"><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  {</div> +<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">return</span> name.empty() ? <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#a603b0827a9ae139b8f5806b1297fa5f0">random_file</a>(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>(), _mode, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>) : <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1file__handle.html#af912595f8964b78186236a2cec1150a4">file</a>(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx.html#ad7da7a1d3240d7574fc7c6ee5831b7ee" title="Returns a path to a directory reported by the operating system to be suitable for storing temporary f...">fixme_temporary_files_directory</a>() / name, _mode, _creation, _caching, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#add27fa17cd6356b49a26a8b6dafb6a6d" title="The flags this handle was opened with.">flags</a>);</div> +<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  }</div> </div><!-- fragment --> </div> </div> @@ -1148,7 +1148,7 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00607"></a><span class="lineno"> 607</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(offset, bytes, exclusive, <a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a>(stl11::chrono::seconds(0))); }</div> +<div class="fragment"><div class="line"><a name="l00600"></a><span class="lineno"> 600</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(offset, bytes, exclusive, <a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a>(stl11::chrono::seconds(0))); }</div> </div><!-- fragment --> </div> </div> @@ -1312,12 +1312,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  {</div> -<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#acbb752522c90f5e4596b8a4f07e2fa80" title="The gather buffer type used by this handle.">const_buffer_type</a> _reqs[1] = {{data, bytes}};</div> -<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  io_request<const_buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a692ba33b1e443510a791ff43f37d73cd" title="The gather buffers type used by this handle.">const_buffers_type</a>(_reqs), offset);</div> -<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a8890b6a6046fb562f9f0ab943b79dfb4" title="Write data to the open handle.">write</a>(reqs, d));</div> -<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keywordflow">return</span> *v.data();</div> -<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  }</div> +<div class="fragment"><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  {</div> +<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#acbb752522c90f5e4596b8a4f07e2fa80" title="The gather buffer type used by this handle.">const_buffer_type</a> _reqs[1] = {{data, bytes}};</div> +<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  io_request<const_buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a692ba33b1e443510a791ff43f37d73cd" title="The gather buffers type used by this handle.">const_buffers_type</a>(_reqs), offset);</div> +<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a8890b6a6046fb562f9f0ab943b79dfb4" title="Write data to the open handle.">write</a>(reqs, d));</div> +<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">return</span> *v.data();</div> +<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  }</div> </div><!-- fragment --> </div> </div> diff --git a/classboost_1_1afio_1_1v2__xxx_1_1handle.html b/classboost_1_1afio_1_1v2__xxx_1_1handle.html index 3f6dcd66..a9e4b0d7 100644 --- a/classboost_1_1afio_1_1v2__xxx_1_1handle.html +++ b/classboost_1_1afio_1_1v2__xxx_1_1handle.html @@ -382,18 +382,18 @@ std::ostream & </td><td class="memItemRight" valign="bottom"><b>operato <p>Cache reads and writes of data and metadata so they complete immediately, only sending any updates to storage on last handle close in the system or if memory becomes tight as this file is expected to be temporary (Windows and FreeBSD only). </p> </td></tr> </table> -<div class="fragment"><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <span class="comment">// bit 0 set means safety fsyncs enabled</span></div> -<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  {</div> -<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  unchanged = 0,</div> -<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada334c4a4c42fdb79d7ebc3e73b517e6f8" title="No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)">none</a> = 1, <span class="comment">//!< No caching whatsoever, all reads and writes come from storage (i.e. <tt>O_DIRECT|O_SYNC</tt>). Align all i/o to 4Kb boundaries for this to work. <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> -<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caab8a61dd00ce6fc5888706bda8fab2e98" title="Cache reads and writes of metadata but avoid caching data (O_DIRECT), thus i/o here does not affect o...">only_metadata</a> = 2, <span class="comment">//!< Cache reads and writes of metadata but avoid caching data (<tt>O_DIRECT</tt>), thus i/o here does not affect other cached data for other handles. Align all i/o to 4Kb boundaries for this to work.</span></div> -<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caa0fb9cf5f04f61bb6f1151da57ceb1ca1" title="Cache reads only. Writes of data and metadata do not complete until reaching storage (O_SYNC)...">reads</a> = 3, <span class="comment">//!< Cache reads only. Writes of data and metadata do not complete until reaching storage (<tt>O_SYNC</tt>). <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> -<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caadec4ecca8ae1593f84eea4656599a693" title="Cache reads and writes of metadata, but writes of data do not complete until reaching storage (O_DSYN...">reads_and_metadata</a> = 5, <span class="comment">//!< Cache reads and writes of metadata, but writes of data do not complete until reaching storage (<tt>O_DSYNC</tt>). <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> -<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caaa181a603769c1f98ad927e7367c7aa51" title="Cache reads and writes of data and metadata so they complete immediately, sending writes to storage a...">all</a> = 4, <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, sending writes to storage at some point when the kernel decides (this is the default file system caching on a system).</span></div> -<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caadfa4d35596e04e042a53c64b25c22db3" title="Cache reads and writes of data and metadata so they complete immediately, but issue safety fsyncs at ...">safety_fsyncs</a> = 7, <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, but issue safety fsyncs at certain points. See documentation for <tt>flag_disable_safety_fsyncs</tt>.</span></div> -<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caad5197d93c063a2b1e22d1630a39b7aef" title="Cache reads and writes of data and metadata so they complete immediately, only sending any updates to...">temporary</a> = 6 <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, only sending any updates to storage on last handle close in the system or if memory becomes tight as this file is expected to be temporary (Windows and FreeBSD only).</span></div> -<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> -<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  };</div> +<div class="fragment"><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <span class="comment">// bit 0 set means safety fsyncs enabled</span></div> +<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  {</div> +<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  unchanged = 0,</div> +<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada334c4a4c42fdb79d7ebc3e73b517e6f8" title="No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)">none</a> = 1, <span class="comment">//!< No caching whatsoever, all reads and writes come from storage (i.e. <tt>O_DIRECT|O_SYNC</tt>). Align all i/o to 4Kb boundaries for this to work. <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> +<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caab8a61dd00ce6fc5888706bda8fab2e98" title="Cache reads and writes of metadata but avoid caching data (O_DIRECT), thus i/o here does not affect o...">only_metadata</a> = 2, <span class="comment">//!< Cache reads and writes of metadata but avoid caching data (<tt>O_DIRECT</tt>), thus i/o here does not affect other cached data for other handles. Align all i/o to 4Kb boundaries for this to work.</span></div> +<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caa0fb9cf5f04f61bb6f1151da57ceb1ca1" title="Cache reads only. Writes of data and metadata do not complete until reaching storage (O_SYNC)...">reads</a> = 3, <span class="comment">//!< Cache reads only. Writes of data and metadata do not complete until reaching storage (<tt>O_SYNC</tt>). <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> +<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caadec4ecca8ae1593f84eea4656599a693" title="Cache reads and writes of metadata, but writes of data do not complete until reaching storage (O_DSYN...">reads_and_metadata</a> = 5, <span class="comment">//!< Cache reads and writes of metadata, but writes of data do not complete until reaching storage (<tt>O_DSYNC</tt>). <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> +<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caaa181a603769c1f98ad927e7367c7aa51" title="Cache reads and writes of data and metadata so they complete immediately, sending writes to storage a...">all</a> = 4, <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, sending writes to storage at some point when the kernel decides (this is the default file system caching on a system).</span></div> +<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caadfa4d35596e04e042a53c64b25c22db3" title="Cache reads and writes of data and metadata so they complete immediately, but issue safety fsyncs at ...">safety_fsyncs</a> = 7, <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, but issue safety fsyncs at certain points. See documentation for <tt>flag_disable_safety_fsyncs</tt>.</span></div> +<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caad5197d93c063a2b1e22d1630a39b7aef" title="Cache reads and writes of data and metadata so they complete immediately, only sending any updates to...">temporary</a> = 6 <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, only sending any updates to storage on last handle close in the system or if memory becomes tight as this file is expected to be temporary (Windows and FreeBSD only).</span></div> +<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> +<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  };</div> </div><!-- fragment --> </div> </div> @@ -413,14 +413,14 @@ std::ostream & </td><td class="memItemRight" valign="bottom"><b>operato <p>Atomically truncate on open, leaving creation date unmodified. </p> </td></tr> </table> -<div class="fragment"><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span></div> -<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  {</div> -<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  open_existing = 0,</div> -<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  only_if_not_exist,</div> -<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  if_needed,</div> -<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#ab7acaf4e9155f8ad4023813354de5357a244f58cf07c35fd48d7524b289551e5c" title="Atomically truncate on open, leaving creation date unmodified.">truncate</a> <span class="comment">//!< Atomically truncate on open, leaving creation date unmodified.</span></div> -<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> -<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  };</div> +<div class="fragment"><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span></div> +<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  {</div> +<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  open_existing = 0,</div> +<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  only_if_not_exist,</div> +<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  if_needed,</div> +<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#ab7acaf4e9155f8ad4023813354de5357a244f58cf07c35fd48d7524b289551e5c" title="Atomically truncate on open, leaving creation date unmodified.">truncate</a> <span class="comment">//!< Atomically truncate on open, leaving creation date unmodified.</span></div> +<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> +<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  };</div> </div><!-- fragment --> </div> </div> @@ -455,17 +455,17 @@ std::ostream & </td><td class="memItemRight" valign="bottom"><b>operato <p>All mainstream OSs and CIFS guarantee this is atomic with respect to all other appenders (FILE_APPEND_DATA|SYNCHRONISE or O_APPEND) </p> </td></tr> </table> -<div class="fragment"><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <span class="comment">// bit 0 set means writable</span></div> -<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  {</div> -<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  unchanged = 0,</div> -<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada334c4a4c42fdb79d7ebc3e73b517e6f8" title="No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)">none</a> = 2, <span class="comment">//!< No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)</span></div> -<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaa4daf6d1e8da35af49c33bbe9ee91d79" title="Ability to read attributes (FILE_READ_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)">attr_read</a> = 4, <span class="comment">//!< Ability to read attributes (FILE_READ_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)</span></div> -<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada9f56aff64cb748e078ab221474132d19" title="Ability to read and write attributes (FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES|SYNCHRONIZE or O_RDO...">attr_write</a> = 5, <span class="comment">//!< Ability to read and write attributes (FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)</span></div> -<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaecae13117d6f0584c25a9da6c8f8415e" title="Ability to read (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|SYNCHRONISE or O_RDONL...">read</a> = 6, <span class="comment">//!< Ability to read (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|SYNCHRONISE or O_RDONLY)</span></div> -<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaefb2a684e4afb7d55e6147fbe5a332ee" title="Ability to read and write (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|FILE_WRITE_D...">write</a> = 7, <span class="comment">//!< Ability to read and write (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|FILE_WRITE_DATA|FILE_WRITE_ATTRIBUTES|FILE_WRITE_EA|FILE_APPEND_DATA|SYNCHRONISE or O_RDWR)</span></div> -<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada9516dfb15f51c7ee19a4d46b8c0dbe1d" title="All mainstream OSs and CIFS guarantee this is atomic with respect to all other appenders (FILE_APPEND...">append</a> = 9 <span class="comment">//!< All mainstream OSs and CIFS guarantee this is atomic with respect to all other appenders (FILE_APPEND_DATA|SYNCHRONISE or O_APPEND)</span></div> -<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> -<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  };</div> +<div class="fragment"><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <span class="comment">// bit 0 set means writable</span></div> +<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div> +<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  unchanged = 0,</div> +<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada334c4a4c42fdb79d7ebc3e73b517e6f8" title="No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)">none</a> = 2, <span class="comment">//!< No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)</span></div> +<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaa4daf6d1e8da35af49c33bbe9ee91d79" title="Ability to read attributes (FILE_READ_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)">attr_read</a> = 4, <span class="comment">//!< Ability to read attributes (FILE_READ_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)</span></div> +<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada9f56aff64cb748e078ab221474132d19" title="Ability to read and write attributes (FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES|SYNCHRONIZE or O_RDO...">attr_write</a> = 5, <span class="comment">//!< Ability to read and write attributes (FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)</span></div> +<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaecae13117d6f0584c25a9da6c8f8415e" title="Ability to read (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|SYNCHRONISE or O_RDONL...">read</a> = 6, <span class="comment">//!< Ability to read (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|SYNCHRONISE or O_RDONLY)</span></div> +<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaefb2a684e4afb7d55e6147fbe5a332ee" title="Ability to read and write (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|FILE_WRITE_D...">write</a> = 7, <span class="comment">//!< Ability to read and write (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|FILE_WRITE_DATA|FILE_WRITE_ATTRIBUTES|FILE_WRITE_EA|FILE_APPEND_DATA|SYNCHRONISE or O_RDWR)</span></div> +<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada9516dfb15f51c7ee19a4d46b8c0dbe1d" title="All mainstream OSs and CIFS guarantee this is atomic with respect to all other appenders (FILE_APPEND...">append</a> = 9 <span class="comment">//!< All mainstream OSs and CIFS guarantee this is atomic with respect to all other appenders (FILE_APPEND_DATA|SYNCHRONISE or O_APPEND)</span></div> +<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> +<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  };</div> </div><!-- fragment --> </div> </div> diff --git a/classboost_1_1afio_1_1v2__xxx_1_1io__handle.html b/classboost_1_1afio_1_1v2__xxx_1_1io__handle.html index abe40f4d..42459960 100644 --- a/classboost_1_1afio_1_1v2__xxx_1_1io__handle.html +++ b/classboost_1_1afio_1_1v2__xxx_1_1io__handle.html @@ -540,12 +540,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  {</div> -<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> -<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> -<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  bytes += i.second;</div> -<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">false</span>, std::move(d));</div> -<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  }</div> +<div class="fragment"><div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  {</div> +<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> +<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> +<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  bytes += i.second;</div> +<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">false</span>, std::move(d));</div> +<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  }</div> </div><!-- fragment --> </div> </div> @@ -581,12 +581,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  {</div> -<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> -<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> -<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  bytes += i.second;</div> -<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">true</span>, std::move(d));</div> -<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  }</div> +<div class="fragment"><div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  {</div> +<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> +<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> +<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  bytes += i.second;</div> +<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">true</span>, std::move(d));</div> +<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  }</div> </div><!-- fragment --> </div> </div> @@ -680,12 +680,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  {</div> -<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a811166f987d82fcd3c85c6aa0b9b4f34" title="The scatter buffer type used by this handle.">buffer_type</a> _reqs[1] = {{data, bytes}};</div> -<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  io_request<buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a9085d19b744d1330eafa51fffc49e104" title="The scatter buffers type used by this handle.">buffers_type</a>(_reqs), offset);</div> -<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(reqs, d));</div> -<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keywordflow">return</span> *v.data();</div> -<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  }</div> +<div class="fragment"><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  {</div> +<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a811166f987d82fcd3c85c6aa0b9b4f34" title="The scatter buffer type used by this handle.">buffer_type</a> _reqs[1] = {{data, bytes}};</div> +<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  io_request<buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a9085d19b744d1330eafa51fffc49e104" title="The scatter buffers type used by this handle.">buffers_type</a>(_reqs), offset);</div> +<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(reqs, d));</div> +<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">return</span> *v.data();</div> +<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  }</div> </div><!-- fragment --> </div> </div> @@ -783,7 +783,7 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00607"></a><span class="lineno"> 607</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(offset, bytes, exclusive, <a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a>(stl11::chrono::seconds(0))); }</div> +<div class="fragment"><div class="line"><a name="l00600"></a><span class="lineno"> 600</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(offset, bytes, exclusive, <a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a>(stl11::chrono::seconds(0))); }</div> </div><!-- fragment --> </div> </div> @@ -922,12 +922,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  {</div> -<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#acbb752522c90f5e4596b8a4f07e2fa80" title="The gather buffer type used by this handle.">const_buffer_type</a> _reqs[1] = {{data, bytes}};</div> -<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  io_request<const_buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a692ba33b1e443510a791ff43f37d73cd" title="The gather buffers type used by this handle.">const_buffers_type</a>(_reqs), offset);</div> -<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a8890b6a6046fb562f9f0ab943b79dfb4" title="Write data to the open handle.">write</a>(reqs, d));</div> -<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keywordflow">return</span> *v.data();</div> -<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  }</div> +<div class="fragment"><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  {</div> +<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#acbb752522c90f5e4596b8a4f07e2fa80" title="The gather buffer type used by this handle.">const_buffer_type</a> _reqs[1] = {{data, bytes}};</div> +<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  io_request<const_buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a692ba33b1e443510a791ff43f37d73cd" title="The gather buffers type used by this handle.">const_buffers_type</a>(_reqs), offset);</div> +<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a8890b6a6046fb562f9f0ab943b79dfb4" title="Write data to the open handle.">write</a>(reqs, d));</div> +<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">return</span> *v.data();</div> +<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  }</div> </div><!-- fragment --> </div> </div> diff --git a/classboost_1_1afio_1_1v2__xxx_1_1io__service.html b/classboost_1_1afio_1_1v2__xxx_1_1io__service.html index ee385256..47edd940 100644 --- a/classboost_1_1afio_1_1v2__xxx_1_1io__service.html +++ b/classboost_1_1afio_1_1v2__xxx_1_1io__service.html @@ -288,7 +288,7 @@ template<class U > </div> </table> </div><div class="memdoc"> <p>Schedule the callable to be invoked by the thread owning this object at its next available opportunity. Unlike any other function in this API layer, this function is thread safe. </p> -<div class="fragment"><div class="line"><a name="l00242"></a><span class="lineno"> 242</span> { _post(detail::make_function_ptr<<span class="keywordtype">void</span>(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__service.html#a4522573bfdefe82786302800eb6316e6">io_service</a> *)>(std::forward<U>(f))); }</div> +<div class="fragment"><div class="line"><a name="l00235"></a><span class="lineno"> 235</span> { _post(detail::make_function_ptr<<span class="keywordtype">void</span>(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__service.html#a4522573bfdefe82786302800eb6316e6">io_service</a> *)>(std::forward<U>(f))); }</div> </div><!-- fragment --> </div> </div> @@ -313,7 +313,7 @@ template<class U > </div> </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00233"></a><span class="lineno"> 233</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__service.html#ae401b78f109f594d6f1c5fc2281ff8f3">run_until</a>(<a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a>()); }</div> +<div class="fragment"><div class="line"><a name="l00226"></a><span class="lineno"> 226</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__service.html#ae401b78f109f594d6f1c5fc2281ff8f3">run_until</a>(<a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a>()); }</div> </div><!-- fragment --> </div> </div> diff --git a/classboost_1_1afio_1_1v2__xxx_1_1map__handle.html b/classboost_1_1afio_1_1v2__xxx_1_1map__handle.html index 98d00416..92f651e6 100644 --- a/classboost_1_1afio_1_1v2__xxx_1_1map__handle.html +++ b/classboost_1_1afio_1_1v2__xxx_1_1map__handle.html @@ -626,12 +626,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  {</div> -<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> -<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> -<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  bytes += i.second;</div> -<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">false</span>, std::move(d));</div> -<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  }</div> +<div class="fragment"><div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  {</div> +<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> +<div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> +<div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  bytes += i.second;</div> +<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">false</span>, std::move(d));</div> +<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  }</div> </div><!-- fragment --> </div> </div> @@ -667,12 +667,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  {</div> -<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> -<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> -<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  bytes += i.second;</div> -<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">true</span>, std::move(d));</div> -<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  }</div> +<div class="fragment"><div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  {</div> +<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordtype">size_t</span> bytes = 0;</div> +<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : reqs.buffers)</div> +<div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  bytes += i.second;</div> +<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(reqs.offset, bytes, <span class="keyword">true</span>, std::move(d));</div> +<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  }</div> </div><!-- fragment --> </div> </div> @@ -799,10 +799,10 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  {</div> -<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  BOOST_OUTCOME_TRY(ret, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1map__handle.html#a7b7036b13db0a4e7ac90193afd22cca9" title="Ask the system to begin to asynchronously prefetch the span of memory regions given, returning the regions actually prefetched. Note that on Windows 7 or earlier the system call to implement this was not available, and so you will see an empty span returned.">prefetch</a>(span<buffer_type>(&region, 1)));</div> -<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keywordflow">return</span> *ret.data();</div> -<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  }</div> +<div class="fragment"><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  {</div> +<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  BOOST_OUTCOME_TRY(ret, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1map__handle.html#a7b7036b13db0a4e7ac90193afd22cca9" title="Ask the system to begin to asynchronously prefetch the span of memory regions given, returning the regions actually prefetched. Note that on Windows 7 or earlier the system call to implement this was not available, and so you will see an empty span returned.">prefetch</a>(span<buffer_type>(&region, 1)));</div> +<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">return</span> *ret.data();</div> +<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  }</div> </div><!-- fragment --> </div> </div> @@ -943,12 +943,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  {</div> -<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a811166f987d82fcd3c85c6aa0b9b4f34" title="The scatter buffer type used by this handle.">buffer_type</a> _reqs[1] = {{data, bytes}};</div> -<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  io_request<buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a9085d19b744d1330eafa51fffc49e104" title="The scatter buffers type used by this handle.">buffers_type</a>(_reqs), offset);</div> -<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(reqs, d));</div> -<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keywordflow">return</span> *v.data();</div> -<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  }</div> +<div class="fragment"><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  {</div> +<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a811166f987d82fcd3c85c6aa0b9b4f34" title="The scatter buffer type used by this handle.">buffer_type</a> _reqs[1] = {{data, bytes}};</div> +<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  io_request<buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a9085d19b744d1330eafa51fffc49e104" title="The scatter buffers type used by this handle.">buffers_type</a>(_reqs), offset);</div> +<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#ab371d8427aeb4bd0ca5f8a39a98ea5a2" title="Read data from the open handle.">read</a>(reqs, d));</div> +<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="keywordflow">return</span> *v.data();</div> +<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  }</div> </div><!-- fragment --> </div> </div> @@ -1046,7 +1046,7 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00607"></a><span class="lineno"> 607</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(offset, bytes, exclusive, <a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a>(stl11::chrono::seconds(0))); }</div> +<div class="fragment"><div class="line"><a name="l00600"></a><span class="lineno"> 600</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#aebd9c90a901e6364c94d466425db6e0f" title="Tries to lock the range of bytes specified for shared or exclusive access. Be aware this passes throu...">lock</a>(offset, bytes, exclusive, <a class="code" href="structdeadline.html" title="A time deadline in either relative-to-now or absolute (system clock) terms.">deadline</a>(stl11::chrono::seconds(0))); }</div> </div><!-- fragment --> </div> </div> @@ -1231,12 +1231,12 @@ For portability, you can only assume that barriers write order for a single hand </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  {</div> -<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#acbb752522c90f5e4596b8a4f07e2fa80" title="The gather buffer type used by this handle.">const_buffer_type</a> _reqs[1] = {{data, bytes}};</div> -<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  io_request<const_buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a692ba33b1e443510a791ff43f37d73cd" title="The gather buffers type used by this handle.">const_buffers_type</a>(_reqs), offset);</div> -<div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a8890b6a6046fb562f9f0ab943b79dfb4" title="Write data to the open handle.">write</a>(reqs, d));</div> -<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keywordflow">return</span> *v.data();</div> -<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  }</div> +<div class="fragment"><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  {</div> +<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#acbb752522c90f5e4596b8a4f07e2fa80" title="The gather buffer type used by this handle.">const_buffer_type</a> _reqs[1] = {{data, bytes}};</div> +<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  io_request<const_buffers_type> reqs(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a692ba33b1e443510a791ff43f37d73cd" title="The gather buffers type used by this handle.">const_buffers_type</a>(_reqs), offset);</div> +<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  BOOST_OUTCOME_TRY(v, <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1io__handle.html#a8890b6a6046fb562f9f0ab943b79dfb4" title="Write data to the open handle.">write</a>(reqs, d));</div> +<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">return</span> *v.data();</div> +<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  }</div> </div><!-- fragment --> </div> </div> diff --git a/classboost_1_1afio_1_1v2__xxx_1_1section__handle.html b/classboost_1_1afio_1_1v2__xxx_1_1section__handle.html index be8b7aac..2bc5e1e4 100644 --- a/classboost_1_1afio_1_1v2__xxx_1_1section__handle.html +++ b/classboost_1_1afio_1_1v2__xxx_1_1section__handle.html @@ -412,18 +412,18 @@ flag </td><td class="memItemRight" valign="bottom"><b>_flags</b></td></tr> <p>Cache reads and writes of data and metadata so they complete immediately, only sending any updates to storage on last handle close in the system or if memory becomes tight as this file is expected to be temporary (Windows and FreeBSD only). </p> </td></tr> </table> -<div class="fragment"><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <span class="comment">// bit 0 set means safety fsyncs enabled</span></div> -<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  {</div> -<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  unchanged = 0,</div> -<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada334c4a4c42fdb79d7ebc3e73b517e6f8" title="No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)">none</a> = 1, <span class="comment">//!< No caching whatsoever, all reads and writes come from storage (i.e. <tt>O_DIRECT|O_SYNC</tt>). Align all i/o to 4Kb boundaries for this to work. <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> -<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caab8a61dd00ce6fc5888706bda8fab2e98" title="Cache reads and writes of metadata but avoid caching data (O_DIRECT), thus i/o here does not affect o...">only_metadata</a> = 2, <span class="comment">//!< Cache reads and writes of metadata but avoid caching data (<tt>O_DIRECT</tt>), thus i/o here does not affect other cached data for other handles. Align all i/o to 4Kb boundaries for this to work.</span></div> -<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caa0fb9cf5f04f61bb6f1151da57ceb1ca1" title="Cache reads only. Writes of data and metadata do not complete until reaching storage (O_SYNC)...">reads</a> = 3, <span class="comment">//!< Cache reads only. Writes of data and metadata do not complete until reaching storage (<tt>O_SYNC</tt>). <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> -<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caadec4ecca8ae1593f84eea4656599a693" title="Cache reads and writes of metadata, but writes of data do not complete until reaching storage (O_DSYN...">reads_and_metadata</a> = 5, <span class="comment">//!< Cache reads and writes of metadata, but writes of data do not complete until reaching storage (<tt>O_DSYNC</tt>). <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> -<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caaa181a603769c1f98ad927e7367c7aa51" title="Cache reads and writes of data and metadata so they complete immediately, sending writes to storage a...">all</a> = 4, <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, sending writes to storage at some point when the kernel decides (this is the default file system caching on a system).</span></div> -<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caadfa4d35596e04e042a53c64b25c22db3" title="Cache reads and writes of data and metadata so they complete immediately, but issue safety fsyncs at ...">safety_fsyncs</a> = 7, <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, but issue safety fsyncs at certain points. See documentation for <tt>flag_disable_safety_fsyncs</tt>.</span></div> -<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caad5197d93c063a2b1e22d1630a39b7aef" title="Cache reads and writes of data and metadata so they complete immediately, only sending any updates to...">temporary</a> = 6 <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, only sending any updates to storage on last handle close in the system or if memory becomes tight as this file is expected to be temporary (Windows and FreeBSD only).</span></div> -<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> -<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  };</div> +<div class="fragment"><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <span class="comment">// bit 0 set means safety fsyncs enabled</span></div> +<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  {</div> +<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  unchanged = 0,</div> +<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada334c4a4c42fdb79d7ebc3e73b517e6f8" title="No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)">none</a> = 1, <span class="comment">//!< No caching whatsoever, all reads and writes come from storage (i.e. <tt>O_DIRECT|O_SYNC</tt>). Align all i/o to 4Kb boundaries for this to work. <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> +<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caab8a61dd00ce6fc5888706bda8fab2e98" title="Cache reads and writes of metadata but avoid caching data (O_DIRECT), thus i/o here does not affect o...">only_metadata</a> = 2, <span class="comment">//!< Cache reads and writes of metadata but avoid caching data (<tt>O_DIRECT</tt>), thus i/o here does not affect other cached data for other handles. Align all i/o to 4Kb boundaries for this to work.</span></div> +<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caa0fb9cf5f04f61bb6f1151da57ceb1ca1" title="Cache reads only. Writes of data and metadata do not complete until reaching storage (O_SYNC)...">reads</a> = 3, <span class="comment">//!< Cache reads only. Writes of data and metadata do not complete until reaching storage (<tt>O_SYNC</tt>). <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> +<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caadec4ecca8ae1593f84eea4656599a693" title="Cache reads and writes of metadata, but writes of data do not complete until reaching storage (O_DSYN...">reads_and_metadata</a> = 5, <span class="comment">//!< Cache reads and writes of metadata, but writes of data do not complete until reaching storage (<tt>O_DSYNC</tt>). <tt>flag_disable_safety_fsyncs</tt> can be used here.</span></div> +<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caaa181a603769c1f98ad927e7367c7aa51" title="Cache reads and writes of data and metadata so they complete immediately, sending writes to storage a...">all</a> = 4, <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, sending writes to storage at some point when the kernel decides (this is the default file system caching on a system).</span></div> +<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caadfa4d35596e04e042a53c64b25c22db3" title="Cache reads and writes of data and metadata so they complete immediately, but issue safety fsyncs at ...">safety_fsyncs</a> = 7, <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, but issue safety fsyncs at certain points. See documentation for <tt>flag_disable_safety_fsyncs</tt>.</span></div> +<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#a81c7de194feaa88684ca9851d0d527caad5197d93c063a2b1e22d1630a39b7aef" title="Cache reads and writes of data and metadata so they complete immediately, only sending any updates to...">temporary</a> = 6 <span class="comment">//!< Cache reads and writes of data and metadata so they complete immediately, only sending any updates to storage on last handle close in the system or if memory becomes tight as this file is expected to be temporary (Windows and FreeBSD only).</span></div> +<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> +<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  };</div> </div><!-- fragment --> </div> </div> @@ -451,14 +451,14 @@ flag </td><td class="memItemRight" valign="bottom"><b>_flags</b></td></tr> <p>Atomically truncate on open, leaving creation date unmodified. </p> </td></tr> </table> -<div class="fragment"><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span></div> -<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  {</div> -<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  open_existing = 0,</div> -<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  only_if_not_exist,</div> -<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  if_needed,</div> -<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#ab7acaf4e9155f8ad4023813354de5357a244f58cf07c35fd48d7524b289551e5c" title="Atomically truncate on open, leaving creation date unmodified.">truncate</a> <span class="comment">//!< Atomically truncate on open, leaving creation date unmodified.</span></div> -<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> -<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  };</div> +<div class="fragment"><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span></div> +<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  {</div> +<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  open_existing = 0,</div> +<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  only_if_not_exist,</div> +<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  if_needed,</div> +<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#ab7acaf4e9155f8ad4023813354de5357a244f58cf07c35fd48d7524b289551e5c" title="Atomically truncate on open, leaving creation date unmodified.">truncate</a> <span class="comment">//!< Atomically truncate on open, leaving creation date unmodified.</span></div> +<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> +<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  };</div> </div><!-- fragment --> </div> </div> @@ -501,17 +501,17 @@ flag </td><td class="memItemRight" valign="bottom"><b>_flags</b></td></tr> <p>All mainstream OSs and CIFS guarantee this is atomic with respect to all other appenders (FILE_APPEND_DATA|SYNCHRONISE or O_APPEND) </p> </td></tr> </table> -<div class="fragment"><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <span class="comment">// bit 0 set means writable</span></div> -<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  {</div> -<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  unchanged = 0,</div> -<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada334c4a4c42fdb79d7ebc3e73b517e6f8" title="No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)">none</a> = 2, <span class="comment">//!< No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)</span></div> -<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaa4daf6d1e8da35af49c33bbe9ee91d79" title="Ability to read attributes (FILE_READ_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)">attr_read</a> = 4, <span class="comment">//!< Ability to read attributes (FILE_READ_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)</span></div> -<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada9f56aff64cb748e078ab221474132d19" title="Ability to read and write attributes (FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES|SYNCHRONIZE or O_RDO...">attr_write</a> = 5, <span class="comment">//!< Ability to read and write attributes (FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)</span></div> -<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaecae13117d6f0584c25a9da6c8f8415e" title="Ability to read (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|SYNCHRONISE or O_RDONL...">read</a> = 6, <span class="comment">//!< Ability to read (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|SYNCHRONISE or O_RDONLY)</span></div> -<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaefb2a684e4afb7d55e6147fbe5a332ee" title="Ability to read and write (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|FILE_WRITE_D...">write</a> = 7, <span class="comment">//!< Ability to read and write (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|FILE_WRITE_DATA|FILE_WRITE_ATTRIBUTES|FILE_WRITE_EA|FILE_APPEND_DATA|SYNCHRONISE or O_RDWR)</span></div> -<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada9516dfb15f51c7ee19a4d46b8c0dbe1d" title="All mainstream OSs and CIFS guarantee this is atomic with respect to all other appenders (FILE_APPEND...">append</a> = 9 <span class="comment">//!< All mainstream OSs and CIFS guarantee this is atomic with respect to all other appenders (FILE_APPEND_DATA|SYNCHRONISE or O_APPEND)</span></div> -<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> -<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  };</div> +<div class="fragment"><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  : <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <span class="comment">// bit 0 set means writable</span></div> +<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div> +<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  unchanged = 0,</div> +<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada334c4a4c42fdb79d7ebc3e73b517e6f8" title="No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)">none</a> = 2, <span class="comment">//!< No ability to read or write anything, but can synchronise (SYNCHRONIZE or 0)</span></div> +<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaa4daf6d1e8da35af49c33bbe9ee91d79" title="Ability to read attributes (FILE_READ_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)">attr_read</a> = 4, <span class="comment">//!< Ability to read attributes (FILE_READ_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)</span></div> +<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada9f56aff64cb748e078ab221474132d19" title="Ability to read and write attributes (FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES|SYNCHRONIZE or O_RDO...">attr_write</a> = 5, <span class="comment">//!< Ability to read and write attributes (FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES|SYNCHRONIZE or O_RDONLY)</span></div> +<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaecae13117d6f0584c25a9da6c8f8415e" title="Ability to read (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|SYNCHRONISE or O_RDONL...">read</a> = 6, <span class="comment">//!< Ability to read (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|SYNCHRONISE or O_RDONLY)</span></div> +<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabadaefb2a684e4afb7d55e6147fbe5a332ee" title="Ability to read and write (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|FILE_WRITE_D...">write</a> = 7, <span class="comment">//!< Ability to read and write (READ_CONTROL|FILE_READ_DATA|FILE_READ_ATTRIBUTES|FILE_READ_EA|FILE_WRITE_DATA|FILE_WRITE_ATTRIBUTES|FILE_WRITE_EA|FILE_APPEND_DATA|SYNCHRONISE or O_RDWR)</span></div> +<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"></span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1handle.html#acd7f0c039e94c7ad40937fe32a2cabada9516dfb15f51c7ee19a4d46b8c0dbe1d" title="All mainstream OSs and CIFS guarantee this is atomic with respect to all other appenders (FILE_APPEND...">append</a> = 9 <span class="comment">//!< All mainstream OSs and CIFS guarantee this is atomic with respect to all other appenders (FILE_APPEND_DATA|SYNCHRONISE or O_APPEND)</span></div> +<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"></span> <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> +<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  };</div> </div><!-- fragment --> </div> </div> @@ -630,7 +630,7 @@ flag </td><td class="memItemRight" valign="bottom"><b>_flags</b></td></tr> </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section</a>(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a60302d5e901f36404d61244e2f0ef90d" title="Returns the borrowed handle backing this section, if any.">backing</a>, maximum_size, _flag); }</div> +<div class="fragment"><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> { <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section</a>(<a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a60302d5e901f36404d61244e2f0ef90d" title="Returns the borrowed handle backing this section, if any.">backing</a>, maximum_size, _flag); }</div> </div><!-- fragment --> </div> </div> @@ -656,10 +656,10 @@ flag </td><td class="memItemRight" valign="bottom"><b>_flags</b></td></tr> </table> </div><div class="memdoc"> <p>This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. </p> -<div class="fragment"><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  {</div> -<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  file_handle <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a60302d5e901f36404d61244e2f0ef90d" title="Returns the borrowed handle backing this section, if any.">backing</a>;</div> -<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section</a>(backing, maximum_size, flag::read | flag::write);</div> -<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  }</div> +<div class="fragment"><div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  {</div> +<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  file_handle <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a60302d5e901f36404d61244e2f0ef90d" title="Returns the borrowed handle backing this section, if any.">backing</a>;</div> +<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">return</span> <a class="code" href="classboost_1_1afio_1_1v2__xxx_1_1section__handle.html#a09eab0e7e479b3c3a07a57567ae3e354" title="Create a memory section.">section</a>(backing, maximum_size, flag::read | flag::write);</div> +<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  }</div> </div><!-- fragment --> </div> </div> diff --git a/namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html b/namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html index 80dda2ae..73cc24f6 100644 --- a/namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html +++ b/namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html @@ -188,22 +188,22 @@ template<class T , class U > </td></tr> <dl class="section return"><dt>Returns</dt><dd>A value of a TLB large page size close to 1Mb.</dd></dl> <dl class="section user"><dt>Complexity</dt><dd>Whatever the system API takes (one would hope constant time). </dd></dl> <dl class="section user"><dt>Errors returnable</dt><dd>Any error from the operating system or std::bad_alloc. </dd></dl> -<div class="fragment"><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  {</div> -<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keyword">static</span> <span class="keywordtype">size_t</span> size;</div> -<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span>(!size)</div> -<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  {</div> -<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  std::vector<size_t> sizes(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html#ae63332cddaecd2a30b839856c7d5fe0e" title="Returns the page sizes of this architecture which is useful for calculating direct i/o multiples...">page_sizes</a>(<span class="keyword">true</span>));</div> -<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : sizes)</div> -<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">if</span>(i >= 1024 * 1024)</div> -<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  {</div> -<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  size = i;</div> -<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">break</span>;</div> -<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div> -<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">if</span>(!size)</div> -<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  size = 1024 * 1024;</div> -<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div> -<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">return</span> size;</div> -<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div> +<div class="fragment"><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  {</div> +<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">static</span> <span class="keywordtype">size_t</span> size;</div> +<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">if</span>(!size)</div> +<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  {</div> +<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  std::vector<size_t> sizes(<a class="code" href="namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html#ae63332cddaecd2a30b839856c7d5fe0e" title="Returns the page sizes of this architecture which is useful for calculating direct i/o multiples...">page_sizes</a>(<span class="keyword">true</span>));</div> +<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">for</span>(<span class="keyword">auto</span> &i : sizes)</div> +<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">if</span>(i >= 1024 * 1024)</div> +<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  {</div> +<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  size = i;</div> +<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">break</span>;</div> +<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div> +<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">if</span>(!size)</div> +<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  size = 1024 * 1024;</div> +<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  }</div> +<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordflow">return</span> size;</div> +<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  }</div> </div><!-- fragment --> </div> </div> @@ -346,13 +346,13 @@ template<class T , class U > </td></tr> <dl class="section return"><dt>Returns</dt><dd>A string representing the randomness at a 2x ratio, so if 32 bytes were requested, this string would be 64 bytes long.</dd></dl> <dl class="section user"><dt>Complexity</dt><dd>Whatever the system API takes. </dd></dl> <dl class="section user"><dt>Errors returnable</dt><dd>Any error from the operating system. </dd></dl> -<div class="fragment"><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  {</div> -<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordtype">size_t</span> outlen = randomlen * 2;</div> -<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  std::string ret(outlen, 0);</div> -<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html#ac7b89428cdd460548bd9a645a6565df4" title="Fills the buffer supplied with cryptographically strong randomness. Uses the OS kernel API...">random_fill</a>(const_cast<char *>(ret.data()), randomlen);</div> -<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  boost_lite::algorithm::string::to_hex_string(const_cast<char *>(ret.data()), outlen, ret.data(), randomlen);</div> -<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordflow">return</span> ret;</div> -<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  }</div> +<div class="fragment"><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  {</div> +<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordtype">size_t</span> outlen = randomlen * 2;</div> +<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  std::string ret(outlen, 0);</div> +<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <a class="code" href="namespaceboost_1_1afio_1_1v2__xxx_1_1utils.html#ac7b89428cdd460548bd9a645a6565df4" title="Fills the buffer supplied with cryptographically strong randomness. Uses the OS kernel API...">random_fill</a>(const_cast<char *>(ret.data()), randomlen);</div> +<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  boost_lite::algorithm::string::to_hex_string(const_cast<char *>(ret.data()), outlen, ret.data(), randomlen);</div> +<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">return</span> ret;</div> +<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  }</div> </div><!-- fragment --> </div> </div> diff --git a/structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html b/structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html index bee03b3a..699d36cd 100644 --- a/structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html +++ b/structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html @@ -172,54 +172,54 @@ Public Types</h2></td></tr> <p>Using insane POSIX byte range locks. </p> </td></tr> </table> -<div class="fragment"><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  {</div> -<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458ad12e7f9f32f8fb358b35e79418f1429e" title="No flags.">none</a> = 0, <span class="comment">//!< No flags</span></div> -<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"></span><span class="comment"> /*! Unlinks the file on handle close. On POSIX, this simply unlinks whatever is pointed</span></div> -<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> to by `path()` upon the call of `close()` if and only if the inode matches. On Windows,</span></div> -<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"> this opens the file handle with the `FILE_FLAG_DELETE_ON_CLOSE` modifier which substantially</span></div> -<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> affects caching policy and causes the \b first handle close to make the file unavailable for</span></div> -<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> anyone else to open with an `errc::resource_unavailable_try_again` error return. Because this is confusing, unless the</span></div> -<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> `win_disable_unlink_emulation` flag is also specified, this POSIX behaviour is</span></div> -<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment"> somewhat emulated by AFIO on Windows by renaming the file to a random name on `close()`</span></div> -<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> causing it to appear to have been unlinked immediately.</span></div> -<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> */</span></div> -<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458a04d0b055e02b0d820a046c9df04b1ef2">unlink_on_close</a> = 1 << 0,</div> +<div class="fragment"><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  {</div> +<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458ad12e7f9f32f8fb358b35e79418f1429e" title="No flags.">none</a> = 0, <span class="comment">//!< No flags</span></div> +<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"></span><span class="comment"> /*! Unlinks the file on handle close. On POSIX, this simply unlinks whatever is pointed</span></div> +<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> to by `path()` upon the call of `close()` if and only if the inode matches. On Windows,</span></div> +<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> this opens the file handle with the `FILE_FLAG_DELETE_ON_CLOSE` modifier which substantially</span></div> +<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> affects caching policy and causes the \b first handle close to make the file unavailable for</span></div> +<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> anyone else to open with an `errc::resource_unavailable_try_again` error return. Because this is confusing, unless the</span></div> +<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> `win_disable_unlink_emulation` flag is also specified, this POSIX behaviour is</span></div> +<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> somewhat emulated by AFIO on Windows by renaming the file to a random name on `close()`</span></div> +<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> causing it to appear to have been unlinked immediately.</span></div> +<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> */</span></div> +<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458a04d0b055e02b0d820a046c9df04b1ef2">unlink_on_close</a> = 1 << 0,</div> +<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"></span></div> +<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> /*! Some kernel caching modes have unhelpfully inconsistent behaviours</span></div> +<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> in getting your data onto storage, so by default unless this flag is</span></div> +<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment"> specified AFIO adds extra fsyncs to the following operations for the</span></div> +<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> caching modes specified below:</span></div> +<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> * truncation of file length either explicitly or during file open.</span></div> +<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> * closing of the handle either explicitly or in the destructor.</span></div> <div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"></span></div> -<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> /*! Some kernel caching modes have unhelpfully inconsistent behaviours</span></div> -<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> in getting your data onto storage, so by default unless this flag is</span></div> -<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> specified AFIO adds extra fsyncs to the following operations for the</span></div> -<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> caching modes specified below:</span></div> -<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> * truncation of file length either explicitly or during file open.</span></div> -<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> * closing of the handle either explicitly or in the destructor.</span></div> -<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"></span></div> -<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> Additionally on Linux only to prevent loss of file metadata:</span></div> -<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> * On the parent directory whenever a file might have been created.</span></div> -<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> * On the parent directory on file close.</span></div> -<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"></span></div> -<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> This only occurs for these kernel caching modes:</span></div> -<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> * caching::none</span></div> -<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> * caching::reads</span></div> -<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> * caching::reads_and_metadata</span></div> -<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> * caching::safety_fsyncs</span></div> -<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> */</span></div> -<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458afa62fca7e0c53a86dfd47b93a2f8974f">disable_safety_fsyncs</a> = 1 << 2,<span class="comment"></span></div> -<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> /*! `file_handle::unlink()` could accidentally delete the wrong file if someone has</span></div> -<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"> renamed the open file handle since the time it was opened. To prevent this occuring,</span></div> -<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> where the OS doesn't provide race free unlink-by-open-handle we compare the inode of</span></div> -<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> the path we are about to unlink with that of the open handle before unlinking.</span></div> -<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> \warning This does not prevent races where in between the time of checking the inode</span></div> -<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> and executing the unlink a third party changes the item about to be unlinked. Only</span></div> -<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment"> operating systems with a true race-free unlink syscall are race free.</span></div> -<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="comment"> */</span></div> -<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458a3009025c971ccc82e0e3a151c0fe95ae">disable_safety_unlinks</a> = 1 << 3,</div> -<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div> -<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458a5dc8858566b13f916d3cc15986ac175d" title="See the documentation for unlink_on_close">win_disable_unlink_emulation</a> = 1 << 24, <span class="comment">//!< See the documentation for `unlink_on_close`</span></div> -<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"></span></div> -<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> -<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div> -<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458a3c01bc890fa4aabc3721ebea294cc783" title="On Windows, create any new handles with OVERLAPPED semantics.">overlapped</a> = 1 << 28, <span class="comment">//!< On Windows, create any new handles with OVERLAPPED semantics</span></div> -<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458a443ebb0a0ef2df5fca9d12cf73f726ee" title="Using insane POSIX byte range locks.">byte_lock_insanity</a> = 1 << 29 <span class="comment">//!< Using insane POSIX byte range locks</span></div> -<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"></span> }</div> +<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> Additionally on Linux only to prevent loss of file metadata:</span></div> +<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> * On the parent directory whenever a file might have been created.</span></div> +<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> * On the parent directory on file close.</span></div> +<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"></span></div> +<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> This only occurs for these kernel caching modes:</span></div> +<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> * caching::none</span></div> +<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> * caching::reads</span></div> +<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> * caching::reads_and_metadata</span></div> +<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> * caching::safety_fsyncs</span></div> +<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> */</span></div> +<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458afa62fca7e0c53a86dfd47b93a2f8974f">disable_safety_fsyncs</a> = 1 << 2,<span class="comment"></span></div> +<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> /*! `file_handle::unlink()` could accidentally delete the wrong file if someone has</span></div> +<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> renamed the open file handle since the time it was opened. To prevent this occuring,</span></div> +<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> where the OS doesn't provide race free unlink-by-open-handle we compare the inode of</span></div> +<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> the path we are about to unlink with that of the open handle before unlinking.</span></div> +<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> \warning This does not prevent races where in between the time of checking the inode</span></div> +<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> and executing the unlink a third party changes the item about to be unlinked. Only</span></div> +<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> operating systems with a true race-free unlink syscall are race free.</span></div> +<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> */</span></div> +<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458a3009025c971ccc82e0e3a151c0fe95ae">disable_safety_unlinks</a> = 1 << 3,</div> +<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> </div> +<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458a5dc8858566b13f916d3cc15986ac175d" title="See the documentation for unlink_on_close">win_disable_unlink_emulation</a> = 1 << 24, <span class="comment">//!< See the documentation for `unlink_on_close`</span></div> +<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"></span></div> +<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> +<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div> +<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458a3c01bc890fa4aabc3721ebea294cc783" title="On Windows, create any new handles with OVERLAPPED semantics.">overlapped</a> = 1 << 28, <span class="comment">//!< On Windows, create any new handles with OVERLAPPED semantics</span></div> +<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1handle_1_1flag__base.html#a341bd60b4fd9aa6a6737f40e52d22458a443ebb0a0ef2df5fca9d12cf73f726ee" title="Using insane POSIX byte range locks.">byte_lock_insanity</a> = 1 << 29 <span class="comment">//!< Using insane POSIX byte range locks</span></div> +<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment"></span> }</div> </div><!-- fragment --> </div> </div> diff --git a/structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html b/structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html index 402973a2..5992bbfa 100644 --- a/structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html +++ b/structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html @@ -195,24 +195,24 @@ Public Types</h2></td></tr> <p>Is a memory section. </p> </td></tr> </table> -<div class="fragment"><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  {</div> -<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a41d8512b16b5db4e04e0de37f5e25f85" title="Invalid handle.">invalid</a> = 0, <span class="comment">//!< Invalid handle</span></div> -<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"></span></div> -<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a3dc019819243ad24fc283879f26e6c5d" title="Is readable.">readable</a> = 1 << 0, <span class="comment">//!< Is readable</span></div> -<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a7f3c9880393fc86b9a5c004a597ed4fe" title="Is writable.">writable</a> = 1 << 1, <span class="comment">//!< Is writable</span></div> -<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a4829b95ec7c706cbdde7248e896f248a" title="Is append only.">append_only</a> = 1 << 2, <span class="comment">//!< Is append only</span></div> -<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"></span></div> -<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5add35e73bad6f0e52bb7307f352513915" title="Requires additional synchronisation.">overlapped</a> = 1 << 4, <span class="comment">//!< Requires additional synchronisation</span></div> -<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a9d5f9c3bd2a7577d36d953701116c651" title="Is seekable.">seekable</a> = 1 << 5, <span class="comment">//!< Is seekable</span></div> -<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a34621b385c000f7bcf69a36d0c11b337" title="Requires sector aligned i/o (typically 512 or 4096)">aligned_io</a> = 1 << 6, <span class="comment">//!< Requires sector aligned i/o (typically 512 or 4096)</span></div> -<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"></span></div> -<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a0e22c8d87219acc3a42d6bb19e17fe8e" title="Is a regular file.">file</a> = 1 << 8, <span class="comment">//!< Is a regular file</span></div> -<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5aa2651bf8f667351f7d898cc35b9d016a" title="Is a directory.">directory</a> = 1 << 9, <span class="comment">//!< Is a directory</span></div> -<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a58f3f96fa1cafd3605b488394e000d89" title="Is a symlink.">symlink</a> = 1 << 10, <span class="comment">//!< Is a symlink</span></div> -<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a1f40773df790828587987eb23baaa72d" title="Is a kqueue/epoll/iocp.">multiplexer</a> = 1 << 11, <span class="comment">//!< Is a kqueue/epoll/iocp</span></div> -<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a9f62853225de4ea8ae224d6912fb0ca1" title="Is a child process.">process</a> = 1 << 12, <span class="comment">//!< Is a child process</span></div> -<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a8e7be1ef9aea64d916d9fe938cfeb7fa" title="Is a memory section.">section</a> = 1 << 13 <span class="comment">//!< Is a memory section</span></div> -<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"></span> }</div> +<div class="fragment"><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  {</div> +<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a41d8512b16b5db4e04e0de37f5e25f85" title="Invalid handle.">invalid</a> = 0, <span class="comment">//!< Invalid handle</span></div> +<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"></span></div> +<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a3dc019819243ad24fc283879f26e6c5d" title="Is readable.">readable</a> = 1 << 0, <span class="comment">//!< Is readable</span></div> +<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a7f3c9880393fc86b9a5c004a597ed4fe" title="Is writable.">writable</a> = 1 << 1, <span class="comment">//!< Is writable</span></div> +<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a4829b95ec7c706cbdde7248e896f248a" title="Is append only.">append_only</a> = 1 << 2, <span class="comment">//!< Is append only</span></div> +<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"></span></div> +<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5add35e73bad6f0e52bb7307f352513915" title="Requires additional synchronisation.">overlapped</a> = 1 << 4, <span class="comment">//!< Requires additional synchronisation</span></div> +<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a9d5f9c3bd2a7577d36d953701116c651" title="Is seekable.">seekable</a> = 1 << 5, <span class="comment">//!< Is seekable</span></div> +<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a34621b385c000f7bcf69a36d0c11b337" title="Requires sector aligned i/o (typically 512 or 4096)">aligned_io</a> = 1 << 6, <span class="comment">//!< Requires sector aligned i/o (typically 512 or 4096)</span></div> +<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"></span></div> +<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a0e22c8d87219acc3a42d6bb19e17fe8e" title="Is a regular file.">file</a> = 1 << 8, <span class="comment">//!< Is a regular file</span></div> +<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5aa2651bf8f667351f7d898cc35b9d016a" title="Is a directory.">directory</a> = 1 << 9, <span class="comment">//!< Is a directory</span></div> +<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a58f3f96fa1cafd3605b488394e000d89" title="Is a symlink.">symlink</a> = 1 << 10, <span class="comment">//!< Is a symlink</span></div> +<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a1f40773df790828587987eb23baaa72d" title="Is a kqueue/epoll/iocp.">multiplexer</a> = 1 << 11, <span class="comment">//!< Is a kqueue/epoll/iocp</span></div> +<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a9f62853225de4ea8ae224d6912fb0ca1" title="Is a child process.">process</a> = 1 << 12, <span class="comment">//!< Is a child process</span></div> +<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1native__handle__type_1_1disposition__base.html#a3f5231b1a86b8c661b39312f0f4a02f5a8e7be1ef9aea64d916d9fe938cfeb7fa" title="Is a memory section.">section</a> = 1 << 13 <span class="comment">//!< Is a memory section</span></div> +<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"></span> }</div> </div><!-- fragment --> </div> </div> diff --git a/structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html b/structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html index 52f53257..3557d058 100644 --- a/structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html +++ b/structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html @@ -175,19 +175,19 @@ Public Types</h2></td></tr> <p>The backing storage is in fact an executable program binary. </p> </td></tr> </table> -<div class="fragment"><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  {<a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21a2220c7c10ce013ef79f9baad9e24ad81" title="No flags.">none</a> = 0, <span class="comment">//!< No flags</span></div> -<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21a9e90016114f8678131fb7547282e6b48" title="Memory views can be read.">read</a> = 1 << 0, <span class="comment">//!< Memory views can be read</span></div> -<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21ad674db212ff8358a30a6d2c105cf0c78" title="Memory views can be written.">write</a> = 1 << 1, <span class="comment">//!< Memory views can be written</span></div> -<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21ae7629d46c02f3ef447725bad31c815f5" title="Memory views can be copy on written.">cow</a> = 1 << 2, <span class="comment">//!< Memory views can be copy on written</span></div> -<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21ab14c76ef314929dfcb3bf1a2ca04e546" title="Memory views can execute code.">execute</a> = 1 << 3, <span class="comment">//!< Memory views can execute code</span></div> -<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"></span></div> -<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21af370cf4af051d7f4f8983a5a15dd8073" title="Don't allocate space for this memory in the system immediately.">nocommit</a> = 1 << 8, <span class="comment">//!< Don't allocate space for this memory in the system immediately</span></div> -<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21a1c2fc1d3eb7aca3d9e451ef1f03e064d" title="Prefault, as if by reading every page, any views of memory upon creation.">prefault</a> = 1 << 9, <span class="comment">//!< Prefault, as if by reading every page, any views of memory upon creation.</span></div> -<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21ac32f8cabf653ea869cc4103438042ca8" title="The backing storage is in fact an executable program binary.">executable</a> = 1 << 10, <span class="comment">//!< The backing storage is in fact an executable program binary.</span></div> -<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"></span></div> -<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> -<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div> -<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  readwrite = (<a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21a9e90016114f8678131fb7547282e6b48" title="Memory views can be read.">read</a> | <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21ad674db212ff8358a30a6d2c105cf0c78" title="Memory views can be written.">write</a>)};</div> +<div class="fragment"><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  {<a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21a2220c7c10ce013ef79f9baad9e24ad81" title="No flags.">none</a> = 0, <span class="comment">//!< No flags</span></div> +<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21a9e90016114f8678131fb7547282e6b48" title="Memory views can be read.">read</a> = 1 << 0, <span class="comment">//!< Memory views can be read</span></div> +<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21ad674db212ff8358a30a6d2c105cf0c78" title="Memory views can be written.">write</a> = 1 << 1, <span class="comment">//!< Memory views can be written</span></div> +<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21ae7629d46c02f3ef447725bad31c815f5" title="Memory views can be copy on written.">cow</a> = 1 << 2, <span class="comment">//!< Memory views can be copy on written</span></div> +<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21ab14c76ef314929dfcb3bf1a2ca04e546" title="Memory views can execute code.">execute</a> = 1 << 3, <span class="comment">//!< Memory views can execute code</span></div> +<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"></span></div> +<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21af370cf4af051d7f4f8983a5a15dd8073" title="Don't allocate space for this memory in the system immediately.">nocommit</a> = 1 << 8, <span class="comment">//!< Don't allocate space for this memory in the system immediately</span></div> +<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21a1c2fc1d3eb7aca3d9e451ef1f03e064d" title="Prefault, as if by reading every page, any views of memory upon creation.">prefault</a> = 1 << 9, <span class="comment">//!< Prefault, as if by reading every page, any views of memory upon creation.</span></div> +<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"></span> <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21ac32f8cabf653ea869cc4103438042ca8" title="The backing storage is in fact an executable program binary.">executable</a> = 1 << 10, <span class="comment">//!< The backing storage is in fact an executable program binary.</span></div> +<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"></span></div> +<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="comment">// NOTE: IF UPDATING THIS UPDATE THE std::ostream PRINTER BELOW!!!</span></div> +<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div> +<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  readwrite = (<a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21a9e90016114f8678131fb7547282e6b48" title="Memory views can be read.">read</a> | <a class="code" href="structboost_1_1afio_1_1v2__xxx_1_1section__handle_1_1flag__base.html#aadb6d09d6768eb7ef629f3c10aa24b21ad674db212ff8358a30a6d2c105cf0c78" title="Memory views can be written.">write</a>)};</div> </div><!-- fragment --> </div> </div> |