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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef COMPONENTS_SCHEDULER_CHILD_CHILD_SCHEDULER_H_ | 5 #ifndef COMPONENTS_SCHEDULER_CHILD_CHILD_SCHEDULER_H_ |
6 #define COMPONENTS_SCHEDULER_CHILD_CHILD_SCHEDULER_H_ | 6 #define COMPONENTS_SCHEDULER_CHILD_CHILD_SCHEDULER_H_ |
7 | 7 |
8 #include "base/macros.h" | 8 #include "base/macros.h" |
9 #include "base/message_loop/message_loop.h" | 9 #include "base/message_loop/message_loop.h" |
10 #include "components/scheduler/base/task_queue.h" | 10 #include "components/scheduler/base/task_queue.h" |
11 #include "components/scheduler/child/single_thread_idle_task_runner.h" | 11 #include "components/scheduler/child/single_thread_idle_task_runner.h" |
12 #include "components/scheduler/scheduler_export.h" | 12 #include "components/scheduler/scheduler_export.h" |
13 | 13 |
14 namespace base { | 14 namespace base { |
15 class MessageLoop; | 15 class MessageLoop; |
16 } | 16 } |
17 | 17 |
18 namespace scheduler { | 18 namespace scheduler { |
| 19 class TaskQueue; |
19 | 20 |
20 class SCHEDULER_EXPORT ChildScheduler { | 21 class SCHEDULER_EXPORT ChildScheduler { |
21 public: | 22 public: |
22 virtual ~ChildScheduler() {} | 23 virtual ~ChildScheduler() {} |
23 | 24 |
24 // Returns the default task runner. | 25 // Returns the default task runner. |
25 virtual scoped_refptr<base::SingleThreadTaskRunner> DefaultTaskRunner() = 0; | 26 virtual scoped_refptr<TaskQueue> DefaultTaskRunner() = 0; |
26 | 27 |
27 // Returns the idle task runner. Tasks posted to this runner may be reordered | 28 // Returns the idle task runner. Tasks posted to this runner may be reordered |
28 // relative to other task types and may be starved for an arbitrarily long | 29 // relative to other task types and may be starved for an arbitrarily long |
29 // time if no idle time is available. | 30 // time if no idle time is available. |
30 virtual scoped_refptr<SingleThreadIdleTaskRunner> IdleTaskRunner() = 0; | 31 virtual scoped_refptr<SingleThreadIdleTaskRunner> IdleTaskRunner() = 0; |
31 | 32 |
32 // Returns true if there is high priority work pending on the main thread | 33 // Returns true if there is high priority work pending on the main thread |
33 // and the caller should yield to let the scheduler service that work. Note | 34 // and the caller should yield to let the scheduler service that work. Note |
34 // that this is a stricter condition than |IsHighPriorityWorkAnticipated|, | 35 // that this is a stricter condition than |IsHighPriorityWorkAnticipated|, |
35 // restricted to the case where real work is pending. | 36 // restricted to the case where real work is pending. |
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60 virtual void Shutdown() = 0; | 61 virtual void Shutdown() = 0; |
61 | 62 |
62 protected: | 63 protected: |
63 ChildScheduler() {} | 64 ChildScheduler() {} |
64 DISALLOW_COPY_AND_ASSIGN(ChildScheduler); | 65 DISALLOW_COPY_AND_ASSIGN(ChildScheduler); |
65 }; | 66 }; |
66 | 67 |
67 } // namespace scheduler | 68 } // namespace scheduler |
68 | 69 |
69 #endif // COMPONENTS_SCHEDULER_CHILD_CHILD_SCHEDULER_H_ | 70 #endif // COMPONENTS_SCHEDULER_CHILD_CHILD_SCHEDULER_H_ |
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