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<div class="title">llfio_v2_xxx::algorithm::shared_fs_mutex::shared_fs_mutex Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div> </div>
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<p>Abstract base class for an object which protects shared filing system resources.
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<p><code>#include "base.hpp"</code></p>
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Inheritance diagram for llfio_v2_xxx::algorithm::shared_fs_mutex::shared_fs_mutex:</div>
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Classes</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entities__guard.html">entities_guard</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">RAII holder for a lock on a sequence of entities. <a href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entities__guard.html#details">More...</a><br /></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct  </td><td class="memItemRight" valign="bottom"><a class="el" href="structllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entity__type.html">entity_type</a></td></tr>
<tr class="memdesc:"><td class="mdescLeft"> </td><td class="mdescRight">The type of an entity id. <a href="structllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entity__type.html#details">More...</a><br /></td></tr>
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Public Types</h2></td></tr>
<tr class="memitem:aec91125605e5a8379b7616b7f90d1232"><td class="memItemLeft" align="right" valign="top"><a id="aec91125605e5a8379b7616b7f90d1232"></a>
using </td><td class="memItemRight" valign="bottom"><a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#aec91125605e5a8379b7616b7f90d1232">entities_type</a> = span< <a class="el" href="structllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entity__type.html">entity_type</a> ></td></tr>
<tr class="memdesc:aec91125605e5a8379b7616b7f90d1232"><td class="mdescLeft"> </td><td class="mdescRight">The type of a sequence of entities. <br /></td></tr>
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Public Member Functions</h2></td></tr>
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<a class="el" href="structllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entity__type.html">entity_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#a4cdf15b69bf6f375ec7083d639f76358">entity_from_buffer</a> (const char *buffer, size_t bytes, bool exclusive=true) noexcept</td></tr>
<tr class="memdesc:a4cdf15b69bf6f375ec7083d639f76358"><td class="mdescLeft"> </td><td class="mdescRight">Generates an entity id from a sequence of bytes. <br /></td></tr>
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<tr class="memitem:afb28aedaf5caa53e851165a4f1927207"><td class="memTemplParams" colspan="2"><a id="afb28aedaf5caa53e851165a4f1927207"></a>
template<typename T > </td></tr>
<tr class="memitem:afb28aedaf5caa53e851165a4f1927207"><td class="memTemplItemLeft" align="right" valign="top"><a class="el" href="structllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entity__type.html">entity_type</a> </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#afb28aedaf5caa53e851165a4f1927207">entity_from_string</a> (const std::basic_string< T > &str, bool exclusive=true) noexcept</td></tr>
<tr class="memdesc:afb28aedaf5caa53e851165a4f1927207"><td class="mdescLeft"> </td><td class="mdescRight">Generates an entity id from a string. <br /></td></tr>
<tr class="separator:afb28aedaf5caa53e851165a4f1927207"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8d62fe0c18bcfb1ade9ff9c7bb00e70b"><td class="memItemLeft" align="right" valign="top"><a id="a8d62fe0c18bcfb1ade9ff9c7bb00e70b"></a>
<a class="el" href="structllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entity__type.html">entity_type</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#a8d62fe0c18bcfb1ade9ff9c7bb00e70b">random_entity</a> (bool exclusive=true) noexcept</td></tr>
<tr class="memdesc:a8d62fe0c18bcfb1ade9ff9c7bb00e70b"><td class="mdescLeft"> </td><td class="mdescRight">Generates a cryptographically random entity id. <br /></td></tr>
<tr class="separator:a8d62fe0c18bcfb1ade9ff9c7bb00e70b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab33ccb32052633a55cb3bb5d1bbdf52b"><td class="memItemLeft" align="right" valign="top"><a id="ab33ccb32052633a55cb3bb5d1bbdf52b"></a>
void </td><td class="memItemRight" valign="bottom"><a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#ab33ccb32052633a55cb3bb5d1bbdf52b">fill_random_entities</a> (span< <a class="el" href="structllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entity__type.html">entity_type</a> > seq, bool exclusive=true) noexcept</td></tr>
<tr class="memdesc:ab33ccb32052633a55cb3bb5d1bbdf52b"><td class="mdescLeft"> </td><td class="mdescRight">Fills a sequence of entity ids with cryptographic randomness. Much faster than calling random_entity() individually. <br /></td></tr>
<tr class="separator:ab33ccb32052633a55cb3bb5d1bbdf52b"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9be2a3c74f82e47e9a71a9888901b749"><td class="memItemLeft" align="right" valign="top"><a id="a9be2a3c74f82e47e9a71a9888901b749"></a>
virtual result< void > </td><td class="memItemRight" valign="bottom"><b>_lock</b> (<a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entities__guard.html">entities_guard</a> &out, <a class="el" href="structllfio__v2__xxx_1_1deadline.html">deadline</a> d, bool spin_not_sleep) noexcept=0</td></tr>
<tr class="separator:a9be2a3c74f82e47e9a71a9888901b749"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:adc6284803080e42505ba812d4711bb74"><td class="memItemLeft" align="right" valign="top"><a id="adc6284803080e42505ba812d4711bb74"></a>
result< <a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entities__guard.html">entities_guard</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#adc6284803080e42505ba812d4711bb74">lock</a> (<a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#aec91125605e5a8379b7616b7f90d1232">entities_type</a> entities, <a class="el" href="structllfio__v2__xxx_1_1deadline.html">deadline</a> d=<a class="el" href="structllfio__v2__xxx_1_1deadline.html">deadline</a>(), bool spin_not_sleep=false) noexcept</td></tr>
<tr class="memdesc:adc6284803080e42505ba812d4711bb74"><td class="mdescLeft"> </td><td class="mdescRight">Lock all of a sequence of entities for exclusive or shared access. <br /></td></tr>
<tr class="separator:adc6284803080e42505ba812d4711bb74"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a33dcc1d37df90ac5dd85a754f9ffce04"><td class="memItemLeft" align="right" valign="top"><a id="a33dcc1d37df90ac5dd85a754f9ffce04"></a>
result< <a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entities__guard.html">entities_guard</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#a33dcc1d37df90ac5dd85a754f9ffce04">lock</a> (<a class="el" href="structllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entity__type.html">entity_type</a> entity, <a class="el" href="structllfio__v2__xxx_1_1deadline.html">deadline</a> d=<a class="el" href="structllfio__v2__xxx_1_1deadline.html">deadline</a>(), bool spin_not_sleep=false) noexcept</td></tr>
<tr class="memdesc:a33dcc1d37df90ac5dd85a754f9ffce04"><td class="mdescLeft"> </td><td class="mdescRight">Lock a single entity for exclusive or shared access. <br /></td></tr>
<tr class="separator:a33dcc1d37df90ac5dd85a754f9ffce04"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a051822a4942c7f45b0491ab4385aacd3"><td class="memItemLeft" align="right" valign="top"><a id="a051822a4942c7f45b0491ab4385aacd3"></a>
result< <a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entities__guard.html">entities_guard</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#a051822a4942c7f45b0491ab4385aacd3">try_lock</a> (<a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#aec91125605e5a8379b7616b7f90d1232">entities_type</a> entities) noexcept</td></tr>
<tr class="memdesc:a051822a4942c7f45b0491ab4385aacd3"><td class="mdescLeft"> </td><td class="mdescRight">Try to lock all of a sequence of entities for exclusive or shared access. <br /></td></tr>
<tr class="separator:a051822a4942c7f45b0491ab4385aacd3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a5a7f463e9235bb95ddd84b69e2642613"><td class="memItemLeft" align="right" valign="top"><a id="a5a7f463e9235bb95ddd84b69e2642613"></a>
result< <a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entities__guard.html">entities_guard</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#a5a7f463e9235bb95ddd84b69e2642613">try_lock</a> (<a class="el" href="structllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex_1_1entity__type.html">entity_type</a> entity) noexcept</td></tr>
<tr class="memdesc:a5a7f463e9235bb95ddd84b69e2642613"><td class="mdescLeft"> </td><td class="mdescRight">Try to lock a single entity for exclusive or shared access. <br /></td></tr>
<tr class="separator:a5a7f463e9235bb95ddd84b69e2642613"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a645f3ecd3a841cb7311102dea4f36757"><td class="memItemLeft" align="right" valign="top"><a id="a645f3ecd3a841cb7311102dea4f36757"></a>
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#a645f3ecd3a841cb7311102dea4f36757">unlock</a> (<a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html#aec91125605e5a8379b7616b7f90d1232">entities_type</a> entities, unsigned long long hint=0) noexcept=0</td></tr>
<tr class="memdesc:a645f3ecd3a841cb7311102dea4f36757"><td class="mdescLeft"> </td><td class="mdescRight">Unlock a previously locked sequence of entities. <br /></td></tr>
<tr class="separator:a645f3ecd3a841cb7311102dea4f36757"><td class="memSeparator" colspan="2"> </td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
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 </td><td class="memItemRight" valign="bottom"><b>shared_fs_mutex</b> (const <a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html">shared_fs_mutex</a> &)=default</td></tr>
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<tr class="memitem:a45d91c0a740b372448ac06f82d5f703b"><td class="memItemLeft" align="right" valign="top"><a id="a45d91c0a740b372448ac06f82d5f703b"></a>
 </td><td class="memItemRight" valign="bottom"><b>shared_fs_mutex</b> (<a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html">shared_fs_mutex</a> &&)=default</td></tr>
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<a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html">shared_fs_mutex</a> & </td><td class="memItemRight" valign="bottom"><b>operator=</b> (const <a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html">shared_fs_mutex</a> &)=default</td></tr>
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<a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html">shared_fs_mutex</a> & </td><td class="memItemRight" valign="bottom"><b>operator=</b> (<a class="el" href="classllfio__v2__xxx_1_1algorithm_1_1shared__fs__mutex_1_1shared__fs__mutex.html">shared_fs_mutex</a> &&)=default</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Abstract base class for an object which protects shared filing system resources. </p>
<p>The implementations of this abstract base class have various pros and cons with varying time and space complexities. See their documentation for details. All share the concept of "entity_type" as being a unique 63 bit identifier of a lockable entity. Various conversion functions are provided below for converting strings, buffers etc. into an entity_type. </p>
</div><hr/>The documentation for this class was generated from the following file:<ul>
<li>include/llfio/v2.0/algorithm/shared_fs_mutex/<a class="el" href="base_8hpp.html">base.hpp</a></li>
</ul>
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