monero/tests/unit_tests/mlocker.cpp

196 lines
8.9 KiB
C++

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