| // Copyright 2013 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef V8_LIBPLATFORM_TASK_QUEUE_H_ |
| #define V8_LIBPLATFORM_TASK_QUEUE_H_ |
| |
| #include <memory> |
| #include <queue> |
| |
| #include "include/libplatform/libplatform-export.h" |
| #include "src/base/macros.h" |
| #include "src/base/platform/mutex.h" |
| #include "src/base/platform/semaphore.h" |
| #include "testing/gtest/include/gtest/gtest_prod.h" // nogncheck |
| |
| namespace v8 { |
| |
| class Task; |
| |
| namespace platform { |
| |
| class V8_PLATFORM_EXPORT TaskQueue { |
| public: |
| TaskQueue(); |
| ~TaskQueue(); |
| |
| // Appends a task to the queue. The queue takes ownership of |task|. |
| void Append(std::unique_ptr<Task> task); |
| |
| // Returns the next task to process. Blocks if no task is available. Returns |
| // nullptr if the queue is terminated. |
| std::unique_ptr<Task> GetNext(); |
| |
| // Terminate the queue. |
| void Terminate(); |
| |
| private: |
| FRIEND_TEST(WorkerThreadTest, PostSingleTask); |
| |
| void BlockUntilQueueEmptyForTesting(); |
| |
| base::Semaphore process_queue_semaphore_; |
| base::Mutex lock_; |
| std::queue<std::unique_ptr<Task>> task_queue_; |
| bool terminated_; |
| |
| DISALLOW_COPY_AND_ASSIGN(TaskQueue); |
| }; |
| |
| } // namespace platform |
| } // namespace v8 |
| |
| |
| #endif // V8_LIBPLATFORM_TASK_QUEUE_H_ |