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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 WebScheduler_h | 5 #ifndef WebScheduler_h |
6 #define WebScheduler_h | 6 #define WebScheduler_h |
7 | 7 |
8 #include "WebCommon.h" | 8 #include "WebCommon.h" |
9 #include "public/platform/WebThread.h" | 9 #include "public/platform/WebThread.h" |
10 | 10 |
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34 // and the caller should yield to let the scheduler service that work. | 34 // and the caller should yield to let the scheduler service that work. |
35 // Must be called on the main thread. | 35 // Must be called on the main thread. |
36 virtual bool shouldYieldForHighPriorityWork() { return false; } | 36 virtual bool shouldYieldForHighPriorityWork() { return false; } |
37 | 37 |
38 // Schedule an idle task to run the Blink main thread. For non-critical | 38 // Schedule an idle task to run the Blink main thread. For non-critical |
39 // tasks which may be reordered relative to other task types and may be | 39 // tasks which may be reordered relative to other task types and may be |
40 // starved for an arbitrarily long time if no idle time is available. | 40 // starved for an arbitrarily long time if no idle time is available. |
41 // Takes ownership of |IdleTask|. Can be called from any thread. | 41 // Takes ownership of |IdleTask|. Can be called from any thread. |
42 virtual void postIdleTask(const WebTraceLocation&, IdleTask*) { } | 42 virtual void postIdleTask(const WebTraceLocation&, IdleTask*) { } |
43 | 43 |
| 44 // Like postIdleTask but does not run the idle task until after some other |
| 45 // task has run. This enables posting of a task which won't stop the Blink |
| 46 // main thread from sleeping, but will start running after it wakes up. |
| 47 // Takes ownership of |IdleTask|. Can be called from any thread. |
| 48 virtual void postIdleTaskAfterWakeup(const WebTraceLocation&, IdleTask*) { } |
| 49 |
44 // Schedule a loading task to be run on the Blink main thread. Loading | 50 // Schedule a loading task to be run on the Blink main thread. Loading |
45 // tasks usually have the default priority, but may be deprioritised | 51 // tasks usually have the default priority, but may be deprioritised |
46 // when the user is interacting with the device. | 52 // when the user is interacting with the device. |
47 // Takes ownership of |WebThread::Task|. Can be called from any thread. | 53 // Takes ownership of |WebThread::Task|. Can be called from any thread. |
48 virtual void postLoadingTask(const WebTraceLocation&, WebThread::Task*) { } | 54 virtual void postLoadingTask(const WebTraceLocation&, WebThread::Task*) { } |
49 }; | 55 }; |
50 | 56 |
51 } // namespace blink | 57 } // namespace blink |
52 | 58 |
53 #endif // WebScheduler_h | 59 #endif // WebScheduler_h |
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