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/* Integration test kernel for issue #9 map_handle and mapped_file_handle are very slow with large address reservations on Windows
(C) 2020 Niall Douglas <http://www.nedproductions.biz/> (2 commits)
File Created: Sept 2020
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License in the accompanying file
Licence.txt or at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Distributed under the Boost Software License, Version 1.0.
(See accompanying file Licence.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
*/
#include "../test_kernel_decl.hpp"
static inline void TestIssue09a()
{
namespace llfio = LLFIO_V2_NAMESPACE;
auto fh = llfio::file_handle::temp_file().value();
fh.truncate(1).value();
auto sh = llfio::section_handle::section(fh).value();
sh.truncate(1ULL << 40ULL).value();
auto mh = llfio::map_handle::map(sh, 1ULL << 35ULL).value();
auto *addr1 = mh.address();
mh.truncate(1ULL << 36ULL).value();
{
auto *addr2 = mh.address();
BOOST_CHECK(addr1 == addr2);
}
mh.truncate(1ULL << 37ULL).value();
{
auto *addr2 = mh.address();
BOOST_CHECK(addr1 == addr2);
}
mh.truncate(1ULL << 38ULL).value();
{
auto *addr2 = mh.address();
BOOST_CHECK(addr1 == addr2);
}
mh.truncate(1ULL << 39ULL).value();
{
auto *addr2 = mh.address();
BOOST_CHECK(addr1 == addr2);
}
mh.truncate(1ULL << 40ULL).value();
{
auto *addr2 = mh.address();
BOOST_CHECK(addr1 == addr2);
}
auto begin = std::chrono::steady_clock::now();
mh.close().value();
sh.close().value();
fh.close().value();
auto end = std::chrono::steady_clock::now();
auto diff = std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count();
std::cout << "Closing a map_handle (file) with six, appended, very large reservations up to 2^40 took " << diff << "ms." << std::endl;
BOOST_CHECK(diff < 250);
}
static inline void TestIssue09b()
{
namespace llfio = LLFIO_V2_NAMESPACE;
auto mh = llfio::map_handle::reserve(1ULL << 43ULL).value();
const auto sixth = mh.length() / 6;
mh.commit({mh.address() + sixth * 0, 1}).value();
mh.commit({mh.address() + sixth * 1, 1}).value();
mh.commit({mh.address() + sixth * 2, 1}).value();
mh.commit({mh.address() + sixth * 3, 1}).value();
mh.commit({mh.address() + sixth * 4, 1}).value();
mh.commit({mh.address() + sixth * 5, 1}).value();
auto begin = std::chrono::steady_clock::now();
mh.do_not_store({mh.address(), mh.length()}).value();
auto end = std::chrono::steady_clock::now();
auto diff = std::chrono::duration_cast<std::chrono::milliseconds>(end - begin).count();
std::cout << "Discard a map_handle (reservation) with six small commits within a reservation of 2^43 took " << diff << "ms." << std::endl;
BOOST_CHECK(diff < 250);
}
KERNELTEST_TEST_KERNEL(regression, llfio, issues, 9a,
"Tests issue #9 map_handle and mapped_file_handle are very slow with large address reservations on Windows", TestIssue09a())
KERNELTEST_TEST_KERNEL(regression, llfio, issues, 9b,
"Tests issue #9 map_handle and mapped_file_handle are very slow with large address reservations on Windows", TestIssue09b())
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