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1 // Copyright 2015 The Chromium 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 COMPONENTS_SCHEDULER_BASE_NESTABLE_SINGLE_THREAD_TASK_RUNNER_H_ | |
6 #define COMPONENTS_SCHEDULER_BASE_NESTABLE_SINGLE_THREAD_TASK_RUNNER_H_ | |
7 | |
8 #include "base/single_thread_task_runner.h" | |
9 #include "base/message_loop/message_loop.h" | |
10 #include "components/scheduler/scheduler_export.h" | |
11 | |
12 namespace scheduler { | |
13 | |
14 // A single thread task runner which exposes whether it is running nested. | |
15 class SCHEDULER_EXPORT NestableSingleThreadTaskRunner | |
16 : public base::SingleThreadTaskRunner { | |
17 public: | |
18 NestableSingleThreadTaskRunner() {} | |
19 | |
20 // Returns true if the task runner is nested (i.e., running a run loop within | |
21 // a nested task). | |
22 virtual bool IsNested() const = 0; | |
23 | |
24 protected: | |
25 ~NestableSingleThreadTaskRunner() override {} | |
26 | |
27 DISALLOW_COPY_AND_ASSIGN(NestableSingleThreadTaskRunner); | |
28 }; | |
29 | |
30 } // namespace scheduler | |
31 | |
32 #endif // COMPONENTS_SCHEDULER_BASE_NESTABLE_SINGLE_THREAD_TASK_RUNNER_H_ | |
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