/* * Copyright (c) 2017, Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #include "runtime/helpers/wddm_helper.h" #include "gtest/gtest.h" #include TEST(MtTestWddmFixture, givenCurrentPagingFenceValueWhenValueChangedThenValueIsSet) { std::atomic currentPagingFenceValue; std::atomic testCount; std::atomic maxValue; currentPagingFenceValue.store(0); testCount.store(100); maxValue.store(0); int threadsCount = 8; std::thread threads[8]; for (int i = 0; i < threadsCount; i++) { threads[i] = std::thread([&]() { while (testCount-- > 0) { uint64_t newVal = ++maxValue; interlockedMax(currentPagingFenceValue, newVal); } }); } for (int i = 0; i < threadsCount; i++) { threads[i].join(); } uint64_t endValue = currentPagingFenceValue.load(); EXPECT_EQ(endValue, 100u); }