OLD | NEW |
---|---|
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 "wtf/Functional.h" | 9 #include "wtf/Functional.h" |
10 #include "wtf/Noncopyable.h" | 10 #include "wtf/Noncopyable.h" |
yhirano
2014/11/07 06:05:28
+#include "wtf/PassOwnPtr.h"
hiroshige
2014/11/07 07:16:59
Done.
| |
11 | 11 |
12 namespace blink { | 12 namespace blink { |
13 class TraceLocation; | 13 class TraceLocation; |
14 class WebScheduler; | 14 class WebScheduler; |
15 | 15 |
16 // The scheduler is an opinionated gateway for arranging work to be run on the | 16 // The scheduler is an opinionated gateway for arranging work to be run on the |
17 // main thread. It decides which tasks get priority over others based on a | 17 // main thread. It decides which tasks get priority over others based on a |
18 // scheduling policy and the overall system state. | 18 // scheduling policy and the overall system state. |
19 class PLATFORM_EXPORT Scheduler { | 19 class PLATFORM_EXPORT Scheduler { |
20 WTF_MAKE_NONCOPYABLE(Scheduler); | 20 WTF_MAKE_NONCOPYABLE(Scheduler); |
21 public: | 21 public: |
22 // An IdleTask is passed a deadline in CLOCK_MONOTONIC seconds and is expect ed to complete before this deadline. | 22 // An IdleTask is passed a deadline in CLOCK_MONOTONIC seconds and is expect ed to complete before this deadline. |
23 typedef Function<void(double deadlineSeconds)> IdleTask; | 23 typedef Function<void(double deadlineSeconds)> IdleTask; |
24 | 24 |
25 static Scheduler* shared(); | 25 static Scheduler* shared(); |
26 static void shutdown(); | 26 static void shutdown(); |
27 | 27 |
28 // For non-critical tasks which may be reordered relative to other task type s and may be starved | 28 // For non-critical tasks which may be reordered relative to other task type s and may be starved |
29 // for an arbitrarily long time if no idle time is available. | 29 // for an arbitrarily long time if no idle time is available. |
30 void postIdleTask(const TraceLocation&, const IdleTask&); | 30 void postIdleTask(const TraceLocation&, PassOwnPtr<IdleTask>); |
31 | 31 |
32 // Returns true if there is high priority work pending on the main thread | 32 // 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. | 33 // and the caller should yield to let the scheduler service that work. |
34 // Must be called on the main thread. | 34 // Must be called on the main thread. |
35 bool shouldYieldForHighPriorityWork() const; | 35 bool shouldYieldForHighPriorityWork() const; |
36 | 36 |
37 protected: | 37 protected: |
38 Scheduler(WebScheduler*); | 38 Scheduler(WebScheduler*); |
39 virtual ~Scheduler(); | 39 virtual ~Scheduler(); |
40 | 40 |
41 static Scheduler* s_sharedScheduler; | 41 static Scheduler* s_sharedScheduler; |
42 WebScheduler* m_webScheduler; | 42 WebScheduler* m_webScheduler; |
43 }; | 43 }; |
44 | 44 |
45 } // namespace blink | 45 } // namespace blink |
46 | 46 |
47 #endif // Scheduler_h | 47 #endif // Scheduler_h |
OLD | NEW |