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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 Scheduler_h | 5 #ifndef Scheduler_h |
6 #define Scheduler_h | 6 #define Scheduler_h |
7 | 7 |
8 #include "platform/PlatformExport.h" | 8 #include "platform/PlatformExport.h" |
9 #include "public/platform/WebThread.h" | 9 #include "public/platform/WebThread.h" |
10 #include "wtf/Functional.h" | 10 #include "wtf/Functional.h" |
(...skipping 12 matching lines...) Expand all Loading... |
23 // An IdleTask is passed a deadline in CLOCK_MONOTONIC seconds and is expect
ed to complete before this deadline. | 23 // An IdleTask is passed a deadline in CLOCK_MONOTONIC seconds and is expect
ed to complete before this deadline. |
24 typedef Function<void(double deadlineSeconds)> IdleTask; | 24 typedef Function<void(double deadlineSeconds)> IdleTask; |
25 | 25 |
26 static Scheduler* shared(); | 26 static Scheduler* shared(); |
27 static void shutdown(); | 27 static void shutdown(); |
28 | 28 |
29 // For non-critical tasks which may be reordered relative to other task type
s and may be starved | 29 // For non-critical tasks which may be reordered relative to other task type
s and may be starved |
30 // for an arbitrarily long time if no idle time is available. | 30 // for an arbitrarily long time if no idle time is available. |
31 void postIdleTask(const WebTraceLocation&, PassOwnPtr<IdleTask>); | 31 void postIdleTask(const WebTraceLocation&, PassOwnPtr<IdleTask>); |
32 | 32 |
| 33 // Like postIdleTask but does not run the idle task until after some other |
| 34 // task has run. This enables posting of a task which won't stop the Blink |
| 35 // main thread from sleeping, but will start running after it wakes up. |
| 36 void postIdleTaskAfterWakeup(const WebTraceLocation&, PassOwnPtr<IdleTask>); |
| 37 |
33 // For tasks related to loading, e.g. HTML parsing. Loading tasks usually h
ave default priority | 38 // For tasks related to loading, e.g. HTML parsing. Loading tasks usually h
ave default priority |
34 // but they may be deprioritized when the user is interacting with the devic
e. | 39 // but they may be deprioritized when the user is interacting with the devic
e. |
35 // Takes ownership of |WebThread::Task|. | 40 // Takes ownership of |WebThread::Task|. |
36 void postLoadingTask(const WebTraceLocation&, WebThread::Task*); | 41 void postLoadingTask(const WebTraceLocation&, WebThread::Task*); |
37 | 42 |
38 // Returns true if there is high priority work pending on the main thread | 43 // Returns true if there is high priority work pending on the main thread |
39 // and the caller should yield to let the scheduler service that work. | 44 // and the caller should yield to let the scheduler service that work. |
40 // Must be called on the main thread. | 45 // Must be called on the main thread. |
41 bool shouldYieldForHighPriorityWork() const; | 46 bool shouldYieldForHighPriorityWork() const; |
42 | 47 |
43 protected: | 48 protected: |
44 Scheduler(WebScheduler*); | 49 Scheduler(WebScheduler*); |
45 virtual ~Scheduler(); | 50 virtual ~Scheduler(); |
46 | 51 |
47 static Scheduler* s_sharedScheduler; | 52 static Scheduler* s_sharedScheduler; |
48 WebScheduler* m_webScheduler; | 53 WebScheduler* m_webScheduler; |
49 }; | 54 }; |
50 | 55 |
51 } // namespace blink | 56 } // namespace blink |
52 | 57 |
53 #endif // Scheduler_h | 58 #endif // Scheduler_h |
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