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196 lines
9 KiB
C++
196 lines
9 KiB
C++
// Copyright (c) 2018-2023, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "gtest/gtest.h"
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#include "misc_log_ex.h"
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#include "mlocker.h"
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#if defined __GNUC__ && !defined _WIN32
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#define HAVE_MLOCK 1
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#endif
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#ifdef HAVE_MLOCK
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#define BASE(data) (char*)(((uintptr_t)(data.get() + page_size - 1)) / page_size * page_size)
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TEST(mlocker, distinct_1)
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{
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const size_t page_size = epee::mlocker::get_page_size();
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ASSERT_TRUE(page_size > 0);
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const size_t base_pages = epee::mlocker::get_num_locked_pages();
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const size_t base_objects = epee::mlocker::get_num_locked_objects();
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std::unique_ptr<char[]> data{new char[8 * page_size]};
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std::shared_ptr<epee::mlocker> m0{new epee::mlocker(BASE(data), 1)};
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std::shared_ptr<epee::mlocker> m1{new epee::mlocker(BASE(data) + 2 * page_size, 1)};
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std::shared_ptr<epee::mlocker> m2{new epee::mlocker(BASE(data) + 3 * page_size, 1)};
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 3);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 3);
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m0 = NULL;
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m1 = NULL;
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m2 = NULL;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 0);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 0);
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}
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TEST(mlocker, distinct_full_page)
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{
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const size_t page_size = epee::mlocker::get_page_size();
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ASSERT_TRUE(page_size > 0);
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const size_t base_pages = epee::mlocker::get_num_locked_pages();
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const size_t base_objects = epee::mlocker::get_num_locked_objects();
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std::unique_ptr<char[]> data{new char[8 * page_size]};
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std::shared_ptr<epee::mlocker> m0{new epee::mlocker(BASE(data), page_size)};
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std::shared_ptr<epee::mlocker> m1{new epee::mlocker(BASE(data) + 2 * page_size, page_size)};
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std::shared_ptr<epee::mlocker> m2{new epee::mlocker(BASE(data) + 3 * page_size, page_size)};
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 3);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 3);
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m0 = NULL;
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m1 = NULL;
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m2 = NULL;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 0);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 0);
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}
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TEST(mlocker, identical)
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{
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const size_t page_size = epee::mlocker::get_page_size();
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ASSERT_TRUE(page_size >= 32);
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const size_t base_pages = epee::mlocker::get_num_locked_pages();
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const size_t base_objects = epee::mlocker::get_num_locked_objects();
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std::unique_ptr<char[]> data{new char[8 * page_size]};
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std::shared_ptr<epee::mlocker> m0{new epee::mlocker(BASE(data) + page_size, 32)};
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std::shared_ptr<epee::mlocker> m1{new epee::mlocker(BASE(data) + page_size, 32)};
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std::shared_ptr<epee::mlocker> m2{new epee::mlocker(BASE(data) + page_size, 32)};
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 1);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 3);
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m1 = NULL;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 1);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 2);
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m0 = NULL;
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m2 = NULL;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 0);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 0);
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}
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TEST(mlocker, overlapping_small)
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{
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const size_t page_size = epee::mlocker::get_page_size();
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ASSERT_TRUE(page_size >= 64);
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const size_t base_pages = epee::mlocker::get_num_locked_pages();
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const size_t base_objects = epee::mlocker::get_num_locked_objects();
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std::unique_ptr<char[]> data{new char[8 * page_size]};
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std::shared_ptr<epee::mlocker> m0{new epee::mlocker(BASE(data), 32)};
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std::shared_ptr<epee::mlocker> m1{new epee::mlocker(BASE(data) + 16, 32)};
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std::shared_ptr<epee::mlocker> m2{new epee::mlocker(BASE(data) + 8, 32)};
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 1);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 3);
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m1 = NULL;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 1);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 2);
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m2 = NULL;
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m0 = NULL;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 0);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 0);
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}
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TEST(mlocker, multi_page)
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{
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const size_t page_size = epee::mlocker::get_page_size();
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ASSERT_TRUE(page_size > 0);
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const size_t base_pages = epee::mlocker::get_num_locked_pages();
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const size_t base_objects = epee::mlocker::get_num_locked_objects();
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std::unique_ptr<char[]> data{new char[8 * page_size]};
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std::shared_ptr<epee::mlocker> m0{new epee::mlocker(BASE(data) + page_size, page_size * 3)};
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 3);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 1);
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std::shared_ptr<epee::mlocker> m1{new epee::mlocker(BASE(data) + page_size * 7, page_size)};
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 4);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 2);
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m0 = NULL;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 1);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 1);
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m1 = NULL;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 0);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 0);
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}
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TEST(mlocker, cross_page)
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{
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const size_t page_size = epee::mlocker::get_page_size();
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ASSERT_TRUE(page_size > 32);
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const size_t base_pages = epee::mlocker::get_num_locked_pages();
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const size_t base_objects = epee::mlocker::get_num_locked_objects();
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std::unique_ptr<char[]> data{new char[2 * page_size]};
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std::shared_ptr<epee::mlocker> m0{new epee::mlocker(BASE(data) + page_size - 1, 2)};
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 2);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 1);
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m0 = NULL;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 0);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 0);
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}
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TEST(mlocker, redundant)
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{
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const size_t page_size = epee::mlocker::get_page_size();
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ASSERT_TRUE(page_size > 0);
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const size_t base_pages = epee::mlocker::get_num_locked_pages();
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const size_t base_objects = epee::mlocker::get_num_locked_objects();
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std::unique_ptr<char[]> data{new char[2 * page_size]};
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 0);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 0);
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std::shared_ptr<epee::mlocker> m0{new epee::mlocker(BASE(data), 32)};
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 1);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 1);
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std::shared_ptr<epee::mlocker> m1{new epee::mlocker(BASE(data), 32)};
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 1);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 2);
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m1 = NULL;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 1);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 1);
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m0 = NULL;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 0);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 0);
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}
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TEST(mlocker, mlocked)
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{
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const size_t base_pages = epee::mlocker::get_num_locked_pages();
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const size_t base_objects = epee::mlocker::get_num_locked_objects();
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{
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struct Foo { uint64_t u; };
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epee::mlocked<Foo> l;
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 1);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 1);
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}
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ASSERT_EQ(epee::mlocker::get_num_locked_pages(), base_pages + 0);
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ASSERT_EQ(epee::mlocker::get_num_locked_objects(), base_objects + 0);
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}
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#endif
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