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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_CHILD_SCHEDULER_TASK_RUNNER_DELEGATE_H_ | |
6 #define COMPONENTS_SCHEDULER_CHILD_SCHEDULER_TASK_RUNNER_DELEGATE_H_ | |
7 | |
8 #include "base/message_loop/message_loop.h" | |
9 #include "components/scheduler/base/nestable_single_thread_task_runner.h" | |
10 #include "components/scheduler/scheduler_export.h" | |
11 | |
12 namespace scheduler { | |
13 | |
14 class SCHEDULER_EXPORT SchedulerTaskRunnerDelegate | |
15 : public NestableSingleThreadTaskRunner { | |
16 public: | |
17 SchedulerTaskRunnerDelegate() {} | |
18 | |
19 // If the underlying task runner supports the concept of a default task | |
20 // runner, the delegate should implement this function to redirect that task | |
21 // runner to the scheduler. | |
22 virtual void SetDefaultTaskRunner( | |
23 scoped_refptr<base::SingleThreadTaskRunner> task_runner) = 0; | |
24 | |
25 // Similarly this method can be used to restore the original task runner when | |
26 // the scheduler no longer wants to intercept tasks. | |
27 virtual void RestoreDefaultTaskRunner() = 0; | |
28 | |
29 protected: | |
30 ~SchedulerTaskRunnerDelegate() override {} | |
31 | |
32 DISALLOW_COPY_AND_ASSIGN(SchedulerTaskRunnerDelegate); | |
33 }; | |
34 | |
35 } // namespace scheduler | |
36 | |
37 #endif // COMPONENTS_SCHEDULER_CHILD_SCHEDULER_TASK_RUNNER_DELEGATE_H_ | |
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