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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #include "config.h" | |
6 #include "platform/scheduler/Scheduler.h" | |
7 | |
8 #include "public/platform/Platform.h" | |
9 #include "public/platform/WebScheduler.h" | |
10 #include "public/platform/WebTraceLocation.h" | |
11 | |
12 namespace blink { | |
13 | |
14 class IdleTaskRunner : public WebThread::IdleTask { | |
15 WTF_MAKE_NONCOPYABLE(IdleTaskRunner); | |
16 | |
17 public: | |
18 explicit IdleTaskRunner(PassOwnPtr<Scheduler::IdleTask> task) | |
19 : m_task(task) | |
20 { | |
21 } | |
22 | |
23 ~IdleTaskRunner() override | |
24 { | |
25 } | |
26 | |
27 // WebThread::IdleTask implementation. | |
28 void run(double deadlineSeconds) override | |
29 { | |
30 (*m_task)(deadlineSeconds); | |
31 } | |
32 private: | |
33 OwnPtr<Scheduler::IdleTask> m_task; | |
34 }; | |
35 | |
36 Scheduler* Scheduler::s_sharedScheduler = nullptr; | |
37 | |
38 void Scheduler::shutdown() | |
39 { | |
40 delete s_sharedScheduler; | |
41 s_sharedScheduler = nullptr; | |
42 } | |
43 | |
44 Scheduler* Scheduler::shared() | |
45 { | |
46 if (!s_sharedScheduler) | |
47 s_sharedScheduler = new Scheduler(Platform::current()->scheduler()); | |
48 return s_sharedScheduler; | |
49 } | |
50 | |
51 void Scheduler::setForTesting(Scheduler* scheduler) | |
52 { | |
53 s_sharedScheduler = scheduler; | |
54 } | |
55 | |
56 Scheduler::Scheduler(WebScheduler* webScheduler) | |
57 : m_webScheduler(webScheduler) | |
58 { | |
59 } | |
60 | |
61 Scheduler::~Scheduler() | |
62 { | |
63 } | |
64 | |
65 void Scheduler::postIdleTask(const WebTraceLocation& location, PassOwnPtr<IdleTa
sk> idleTask) | |
66 { | |
67 if (m_webScheduler) | |
68 m_webScheduler->postIdleTask(location, new IdleTaskRunner(idleTask)); | |
69 } | |
70 | |
71 void Scheduler::postNonNestableIdleTask(const WebTraceLocation& location, PassOw
nPtr<IdleTask> idleTask) | |
72 { | |
73 if (m_webScheduler) | |
74 m_webScheduler->postNonNestableIdleTask(location, new IdleTaskRunner(idl
eTask)); | |
75 } | |
76 | |
77 void Scheduler::postIdleTaskAfterWakeup(const WebTraceLocation& location, PassOw
nPtr<IdleTask> idleTask) | |
78 { | |
79 if (m_webScheduler) | |
80 m_webScheduler->postIdleTaskAfterWakeup(location, new IdleTaskRunner(idl
eTask)); | |
81 } | |
82 | |
83 void Scheduler::postLoadingTask(const WebTraceLocation& location, WebThread::Tas
k* task) | |
84 { | |
85 if (m_webScheduler) | |
86 m_webScheduler->postLoadingTask(location, task); | |
87 } | |
88 | |
89 bool Scheduler::shouldYieldForHighPriorityWork() const | |
90 { | |
91 if (m_webScheduler) | |
92 return m_webScheduler->shouldYieldForHighPriorityWork(); | |
93 return false; | |
94 } | |
95 | |
96 bool Scheduler::canExceedIdleDeadlineIfRequired() const | |
97 { | |
98 if (m_webScheduler) | |
99 return m_webScheduler->canExceedIdleDeadlineIfRequired(); | |
100 return false; | |
101 } | |
102 | |
103 } // namespace blink | |
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