1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_PERFORMANCE_MANAGER_POLICIES_FRAME_THROTTLING_POLICY_H_
#define CHROME_BROWSER_PERFORMANCE_MANAGER_POLICIES_FRAME_THROTTLING_POLICY_H_
#include <set>
#include "components/performance_manager/public/graph/frame_node.h"
#include "components/performance_manager/public/graph/graph.h"
#include "content/public/browser/frame_rate_throttling.h"
#include "content/public/browser/global_routing_id.h"
namespace performance_manager::policies {
// This policy is responsible for doing specific throttling when the frames
// become visible but unimportant. Currently it can only throttle frame rate.
//
// As for frame rate throttling, it signals the frame sink manager that the
// specified frame sinks should start sending BeginFrames at a specific
// interval.
class FrameThrottlingPolicy : public GraphOwned, public FrameNodeObserver {
public:
FrameThrottlingPolicy();
~FrameThrottlingPolicy() override;
FrameThrottlingPolicy(const FrameThrottlingPolicy& other) = delete;
FrameThrottlingPolicy& operator=(const FrameThrottlingPolicy&) = delete;
// FrameNodeObserver:
void OnFrameNodeAdded(const FrameNode* frame_node) override;
void OnBeforeFrameNodeRemoved(const FrameNode* frame_node) override;
void OnIsImportantChanged(const FrameNode* frame_node) override;
// GraphOwned:
void OnPassedToGraph(Graph* graph) override;
void OnTakenFromGraph(Graph* graph) override;
bool IsFrameSinkThrottled(const content::GlobalRenderFrameHostId& id) const;
private:
void EnableFrameSinkThrottle(const content::GlobalRenderFrameHostId& id);
void DisableFrameSinkThrottle(const content::GlobalRenderFrameHostId& id);
// The set of GlobalRenderFrameHostId, their corresponding frames are
// throttled to send BeginFrames at a specific interval.
std::set<content::GlobalRenderFrameHostId> throttled_frames_;
base::TimeDelta throttle_interval_;
};
} // namespace performance_manager::policies
#endif // CHROME_BROWSER_PERFORMANCE_MANAGER_POLICIES_FRAME_THROTTLING_POLICY_H_
|
