| // Copyright 2021 The Dawn Authors |
| // |
| // 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 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. |
| |
| // |
| // AsyncTaskTests: |
| // Simple tests for native::AsyncTask and native::AsnycTaskManager. |
| |
| #include <memory> |
| #include <mutex> |
| #include <set> |
| #include <utility> |
| #include <vector> |
| |
| #include "dawn/common/NonCopyable.h" |
| #include "dawn/native/AsyncTask.h" |
| #include "dawn/platform/DawnPlatform.h" |
| #include "gtest/gtest.h" |
| |
| namespace dawn { |
| namespace { |
| |
| struct SimpleTaskResult { |
| uint32_t id; |
| }; |
| |
| // A thread-safe queue that stores the task results. |
| class ConcurrentTaskResultQueue : public NonCopyable { |
| public: |
| void AddResult(std::unique_ptr<SimpleTaskResult> result) { |
| std::lock_guard<std::mutex> lock(mMutex); |
| mTaskResults.push_back(std::move(result)); |
| } |
| |
| std::vector<std::unique_ptr<SimpleTaskResult>> GetAllResults() { |
| std::vector<std::unique_ptr<SimpleTaskResult>> outputResults; |
| { |
| std::lock_guard<std::mutex> lock(mMutex); |
| outputResults.swap(mTaskResults); |
| } |
| return outputResults; |
| } |
| |
| private: |
| std::mutex mMutex; |
| std::vector<std::unique_ptr<SimpleTaskResult>> mTaskResults; |
| }; |
| |
| void DoTask(ConcurrentTaskResultQueue* resultQueue, uint32_t id) { |
| std::unique_ptr<SimpleTaskResult> result = std::make_unique<SimpleTaskResult>(); |
| result->id = id; |
| resultQueue->AddResult(std::move(result)); |
| } |
| |
| class AsyncTaskTest : public testing::Test {}; |
| |
| // Emulate the basic usage of worker thread pool in Create*PipelineAsync(). |
| TEST_F(AsyncTaskTest, Basic) { |
| platform::Platform platform; |
| std::unique_ptr<platform::WorkerTaskPool> pool = platform.CreateWorkerTaskPool(); |
| |
| native::AsyncTaskManager taskManager(pool.get()); |
| ConcurrentTaskResultQueue taskResultQueue; |
| |
| constexpr size_t kTaskCount = 4u; |
| std::set<uint32_t> idset; |
| for (uint32_t i = 0; i < kTaskCount; ++i) { |
| native::AsyncTask asyncTask([&taskResultQueue, i] { DoTask(&taskResultQueue, i); }); |
| taskManager.PostTask(std::move(asyncTask)); |
| idset.insert(i); |
| } |
| |
| taskManager.WaitAllPendingTasks(); |
| |
| std::vector<std::unique_ptr<SimpleTaskResult>> results = taskResultQueue.GetAllResults(); |
| ASSERT_EQ(kTaskCount, results.size()); |
| for (std::unique_ptr<SimpleTaskResult>& result : results) { |
| idset.erase(result->id); |
| } |
| ASSERT_TRUE(idset.empty()); |
| } |
| |
| } // anonymous namespace |
| } // namespace dawn |