1 | // Copyright 2013 the V8 project authors. All rights reserved. |
---|---|
2 | // Use of this source code is governed by a BSD-style license that can be |
3 | // found in the LICENSE file. |
4 | |
5 | #ifndef V8_LIBPLATFORM_TASK_QUEUE_H_ |
6 | #define V8_LIBPLATFORM_TASK_QUEUE_H_ |
7 | |
8 | #include <queue> |
9 | |
10 | #include "include/libplatform/libplatform-export.h" |
11 | #include "src/base/macros.h" |
12 | #include "src/base/platform/mutex.h" |
13 | #include "src/base/platform/semaphore.h" |
14 | #include "testing/gtest/include/gtest/gtest_prod.h" // nogncheck |
15 | |
16 | namespace v8 { |
17 | |
18 | class Task; |
19 | |
20 | namespace platform { |
21 | |
22 | class V8_PLATFORM_EXPORT TaskQueue { |
23 | public: |
24 | TaskQueue(); |
25 | ~TaskQueue(); |
26 | |
27 | // Appends a task to the queue. The queue takes ownership of |task|. |
28 | void Append(std::unique_ptr<Task> task); |
29 | |
30 | // Returns the next task to process. Blocks if no task is available. Returns |
31 | // nullptr if the queue is terminated. |
32 | std::unique_ptr<Task> GetNext(); |
33 | |
34 | // Terminate the queue. |
35 | void Terminate(); |
36 | |
37 | private: |
38 | FRIEND_TEST(WorkerThreadTest, PostSingleTask); |
39 | |
40 | void BlockUntilQueueEmptyForTesting(); |
41 | |
42 | base::Semaphore process_queue_semaphore_; |
43 | base::Mutex lock_; |
44 | std::queue<std::unique_ptr<Task>> task_queue_; |
45 | bool terminated_; |
46 | |
47 | DISALLOW_COPY_AND_ASSIGN(TaskQueue); |
48 | }; |
49 | |
50 | } // namespace platform |
51 | } // namespace v8 |
52 | |
53 | |
54 | #endif // V8_LIBPLATFORM_TASK_QUEUE_H_ |
55 |