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/*
* Copyright (C) 2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "ActivityState.h"
#include "Timer.h"
#include <wtf/CPUTime.h>
#include <wtf/TZoneMalloc.h>
namespace WebCore {
class Page;
class PerformanceMonitor {
WTF_MAKE_TZONE_ALLOCATED(PerformanceMonitor);
public:
explicit PerformanceMonitor(Page&);
void ref() const;
void deref() const;
void didStartProvisionalLoad();
void didFinishLoad();
void activityStateChanged(OptionSet<ActivityState> oldState, OptionSet<ActivityState> newState);
private:
void measurePostLoadCPUUsage();
void measurePostBackgroundingCPUUsage();
void measurePerActivityStateCPUUsage();
void measureCPUUsageInActivityState(ActivityStateForCPUSampling);
void measurePostLoadMemoryUsage();
void measurePostBackgroundingMemoryUsage();
void processMayBecomeInactiveTimerFired();
static void updateProcessStateForMemoryPressure();
WeakRef<Page> m_page;
Timer m_postPageLoadCPUUsageTimer;
std::optional<CPUTime> m_postLoadCPUTime;
Timer m_postBackgroundingCPUUsageTimer;
std::optional<CPUTime> m_postBackgroundingCPUTime;
Timer m_perActivityStateCPUUsageTimer;
std::optional<CPUTime> m_perActivityStateCPUTime;
Timer m_postPageLoadMemoryUsageTimer;
Timer m_postBackgroundingMemoryUsageTimer;
Timer m_processMayBecomeInactiveTimer;
bool m_processMayBecomeInactive { true };
};
}
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