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Side by Side Diff: content/renderer/scheduler/renderer_scheduler.h

Issue 847883002: Reland "Throttle resource message requests during user interaction" (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Cleanup Created 5 years, 11 months ago
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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 CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_H_ 5 #ifndef CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_H_
6 #define CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_H_ 6 #define CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_H_
7 7
8 #include "content/renderer/scheduler/single_thread_idle_task_runner.h" 8 #include "content/renderer/scheduler/single_thread_idle_task_runner.h"
9 #include "content/renderer/scheduler/task_queue_manager.h" 9 #include "content/renderer/scheduler/task_queue_manager.h"
10 #include "third_party/WebKit/public/web/WebInputEvent.h" 10 #include "third_party/WebKit/public/web/WebInputEvent.h"
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42 42
43 // Tells the scheduler that the system received an input event. Called by the 43 // Tells the scheduler that the system received an input event. Called by the
44 // compositor (impl) thread. 44 // compositor (impl) thread.
45 virtual void DidReceiveInputEventOnCompositorThread( 45 virtual void DidReceiveInputEventOnCompositorThread(
46 blink::WebInputEvent::Type type) = 0; 46 blink::WebInputEvent::Type type) = 0;
47 47
48 // Tells the scheduler that the system is displaying an input animation (e.g. 48 // Tells the scheduler that the system is displaying an input animation (e.g.
49 // a fling). Called by the compositor (impl) thread. 49 // a fling). Called by the compositor (impl) thread.
50 virtual void DidAnimateForInputOnCompositorThread() = 0; 50 virtual void DidAnimateForInputOnCompositorThread() = 0;
51 51
52 // Returns true if the scheduler has reason to believe that high priority work
53 // may soon arrive on the main thread, e.g., if gesture events were observed
54 // recently.
55 // Must be called from the main thread.
56 virtual bool ShouldAnticipateHighPriorityWork() = 0;
57
52 // Returns true if there is high priority work pending on the main thread 58 // Returns true if there is high priority work pending on the main thread
53 // and the caller should yield to let the scheduler service that work. 59 // and the caller should yield to let the scheduler service that work. Note
60 // that this is a stricter condition than |ShouldAnticipateHighPriorityWork|,
61 // restricted to the case where real work is pending.
54 // Must be called from the main thread. 62 // Must be called from the main thread.
55 virtual bool ShouldYieldForHighPriorityWork() = 0; 63 virtual bool ShouldYieldForHighPriorityWork() = 0;
56 64
57 // Shuts down the scheduler by dropping any remaining pending work in the work 65 // Shuts down the scheduler by dropping any remaining pending work in the work
58 // queues. After this call any work posted to the task runners will be 66 // queues. After this call any work posted to the task runners will be
59 // silently dropped. 67 // silently dropped.
60 virtual void Shutdown() = 0; 68 virtual void Shutdown() = 0;
61 69
62 protected: 70 protected:
63 RendererScheduler(); 71 RendererScheduler();
64 DISALLOW_COPY_AND_ASSIGN(RendererScheduler); 72 DISALLOW_COPY_AND_ASSIGN(RendererScheduler);
65 }; 73 };
66 74
67 } // namespace content 75 } // namespace content
68 76
69 #endif // CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_H_ 77 #endif // CONTENT_RENDERER_SCHEDULER_RENDERER_SCHEDULER_H_
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