1/*
2 * Copyright (C) 2017 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "ActivityState.h"
29#include "Timer.h"
30#include <wtf/CPUTime.h>
31#include <wtf/Optional.h>
32
33namespace WebCore {
34
35class Page;
36
37class PerformanceMonitor {
38 WTF_MAKE_FAST_ALLOCATED;
39public:
40 explicit PerformanceMonitor(Page&);
41
42 void didStartProvisionalLoad();
43 void didFinishLoad();
44 void activityStateChanged(OptionSet<ActivityState::Flag> oldState, OptionSet<ActivityState::Flag> newState);
45
46private:
47 void measurePostLoadCPUUsage();
48 void measurePostBackgroundingCPUUsage();
49 void measurePerActivityStateCPUUsage();
50 void measureCPUUsageInActivityState(ActivityStateForCPUSampling);
51 void measurePostLoadMemoryUsage();
52 void measurePostBackgroundingMemoryUsage();
53 void processMayBecomeInactiveTimerFired();
54 static void updateProcessStateForMemoryPressure();
55
56 Page& m_page;
57
58 Timer m_postPageLoadCPUUsageTimer;
59 Optional<CPUTime> m_postLoadCPUTime;
60 Timer m_postBackgroundingCPUUsageTimer;
61 Optional<CPUTime> m_postBackgroundingCPUTime;
62 Timer m_perActivityStateCPUUsageTimer;
63 Optional<CPUTime> m_perActivityStateCPUTime;
64
65 Timer m_postPageLoadMemoryUsageTimer;
66 Timer m_postBackgroundingMemoryUsageTimer;
67
68 Timer m_processMayBecomeInactiveTimer;
69 bool m_processMayBecomeInactive { true };
70};
71
72}
73