/* * 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 namespace WebCore { class Page; class PerformanceMonitor { WTF_MAKE_FAST_ALLOCATED; public: explicit PerformanceMonitor(Page&); void didStartProvisionalLoad(); void didFinishLoad(); void activityStateChanged(OptionSet oldState, OptionSet newState); private: void measurePostLoadCPUUsage(); void measurePostBackgroundingCPUUsage(); void measurePerActivityStateCPUUsage(); void measureCPUUsageInActivityState(ActivityStateForCPUSampling); void measurePostLoadMemoryUsage(); void measurePostBackgroundingMemoryUsage(); void processMayBecomeInactiveTimerFired(); static void updateProcessStateForMemoryPressure(); Page& m_page; Timer m_postPageLoadCPUUsageTimer; std::optional m_postLoadCPUTime; Timer m_postBackgroundingCPUUsageTimer; std::optional m_postBackgroundingCPUTime; Timer m_perActivityStateCPUUsageTimer; std::optional m_perActivityStateCPUTime; Timer m_postPageLoadMemoryUsageTimer; Timer m_postBackgroundingMemoryUsageTimer; Timer m_processMayBecomeInactiveTimer; bool m_processMayBecomeInactive { true }; }; }