| // Copyright 2015 The Chromium 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 COMPONENTS_SCHEDULER_BASE_NESTABLE_SINGLE_THREAD_TASK_RUNNER_H_ |
| #define COMPONENTS_SCHEDULER_BASE_NESTABLE_SINGLE_THREAD_TASK_RUNNER_H_ |
| |
| #include "base/single_thread_task_runner.h" |
| #include "base/message_loop/message_loop.h" |
| #include "components/scheduler/scheduler_export.h" |
| |
| namespace scheduler { |
| |
| // A single thread task runner which exposes whether it is running nested. |
| class SCHEDULER_EXPORT NestableSingleThreadTaskRunner |
| : public base::SingleThreadTaskRunner { |
| public: |
| NestableSingleThreadTaskRunner() {} |
| |
| // Returns true if the task runner is nested (i.e., running a run loop within |
| // a nested task). |
| virtual bool IsNested() const = 0; |
| |
| protected: |
| ~NestableSingleThreadTaskRunner() override {} |
| |
| DISALLOW_COPY_AND_ASSIGN(NestableSingleThreadTaskRunner); |
| }; |
| |
| } // namespace scheduler |
| |
| #endif // COMPONENTS_SCHEDULER_BASE_NESTABLE_SINGLE_THREAD_TASK_RUNNER_H_ |