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https://gitea.wildfiregames.com/0ad/0ad
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157c6af18e
Avoid cases of filenames Update years in terms and other legal(ish) documents Don't update years in license headers, since change is not meaningful Will add linter rule in seperate commit Happy recompiling everyone! Original Patch By: Nescio Comment By: Gallaecio Differential Revision: D2620 This was SVN commit r27786.
118 lines
3.5 KiB
C++
118 lines
3.5 KiB
C++
/* Copyright (C) 2021 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "lib/self_test.h"
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#include "ps/Future.h"
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#include "ps/TaskManager.h"
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#include <atomic>
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#include <condition_variable>
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#include <mutex>
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class TestTaskManager : public CxxTest::TestSuite
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{
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public:
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void test_basic()
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{
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Threading::TaskManager& taskManager = Threading::TaskManager::Instance();
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// There is a minimum of 3.
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TS_ASSERT(taskManager.GetNumberOfWorkers() >= 3);
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std::atomic<int> tasks_run = 0;
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auto increment_run = [&tasks_run]() { tasks_run++; };
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Future future = taskManager.PushTask(increment_run);
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future.Wait();
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TS_ASSERT_EQUALS(tasks_run.load(), 1);
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// Test Execute.
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std::condition_variable cv;
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std::mutex mutex;
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std::atomic<bool> go = false;
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future = taskManager.PushTask([&]() {
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std::unique_lock<std::mutex> lock(mutex);
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cv.wait(lock, [&go]() -> bool { return go; });
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lock.unlock();
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increment_run();
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lock.lock();
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go = false;
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lock.unlock();
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cv.notify_all();
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});
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TS_ASSERT_EQUALS(tasks_run.load(), 1);
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std::unique_lock<std::mutex> lock(mutex);
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go = true;
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lock.unlock();
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cv.notify_all();
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lock.lock();
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cv.wait(lock, [&go]() -> bool { return !go; });
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TS_ASSERT_EQUALS(tasks_run.load(), 2);
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// Wait on the future before the mutex/cv go out of scope.
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future.Wait();
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}
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void test_Priority()
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{
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Threading::TaskManager& taskManager = Threading::TaskManager::Instance();
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std::atomic<int> tasks_run = 0;
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// Push general tasks
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auto increment_run = [&tasks_run]() { tasks_run++; };
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Future future = taskManager.PushTask(increment_run);
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Future futureLow = taskManager.PushTask(increment_run, Threading::TaskPriority::LOW);
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future.Wait();
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futureLow.Wait();
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TS_ASSERT_EQUALS(tasks_run.load(), 2);
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// Also check with no waiting expected.
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taskManager.PushTask(increment_run).Wait();
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TS_ASSERT_EQUALS(tasks_run.load(), 3);
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taskManager.PushTask(increment_run, Threading::TaskPriority::LOW).Wait();
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TS_ASSERT_EQUALS(tasks_run.load(), 4);
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}
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void test_Load()
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{
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Threading::TaskManager& taskManager = Threading::TaskManager::Instance();
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#define ITERATIONS 100000
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std::vector<Future<int>> futures;
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futures.resize(ITERATIONS);
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std::vector<u32> values(ITERATIONS);
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auto f1 = taskManager.PushTask([&taskManager, &futures]() {
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for (u32 i = 0; i < ITERATIONS; i+=3)
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futures[i] = taskManager.PushTask([]() { return 5; });
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});
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auto f2 = taskManager.PushTask([&taskManager, &futures]() {
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for (u32 i = 1; i < ITERATIONS; i+=3)
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futures[i] = taskManager.PushTask([]() { return 5; }, Threading::TaskPriority::LOW);
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});
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auto f3 = taskManager.PushTask([&taskManager, &futures]() {
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for (u32 i = 2; i < ITERATIONS; i+=3)
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futures[i] = taskManager.PushTask([]() { return 5; });
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});
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f1.Wait();
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f2.Wait();
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f3.Wait();
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for (size_t i = 0; i < ITERATIONS; ++i)
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TS_ASSERT_EQUALS(futures[i].Get(), 5);
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#undef ITERATIONS
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}
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};
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