blob: 522c681801cb8f93aa8eee6729fe7659c2743651 [file] [log] [blame]
/*
* 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 "Timer.h"
#include <wtf/CPUTime.h>
#include <wtf/Function.h>
namespace WebCore {
class CPUMonitor {
WTF_MAKE_FAST_ALLOCATED;
public:
using ExceededCPULimitHandler = Function<void(double)>;
WEBCORE_EXPORT CPUMonitor(Seconds checkInterval, ExceededCPULimitHandler&&);
WEBCORE_EXPORT void setCPULimit(const std::optional<double>&);
private:
void timerFired();
Seconds m_checkInterval;
ExceededCPULimitHandler m_exceededCPULimitHandler;
Timer m_timer;
std::optional<double> m_cpuLimit;
std::optional<CPUTime> m_lastCPUTime;
};
} // namespace WebCore