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* Copyright (C) 2010, 2012 Apple Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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#include "ResponsivenessTimer.h"
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using namespace WebCore;
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static const double responsivenessTimeout = 3;
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ResponsivenessTimer::ResponsivenessTimer(ResponsivenessTimer::Client* client)
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, m_isResponsive(true)
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, m_timer(RunLoop::main(), this, &ResponsivenessTimer::timerFired)
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ResponsivenessTimer::~ResponsivenessTimer()
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void ResponsivenessTimer::invalidate()
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void ResponsivenessTimer::timerFired()
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m_isResponsive = false;
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m_client->didBecomeUnresponsive(this);
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// The timer fired while unresponsive.
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m_client->interactionOccurredWhileUnresponsive(this);
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void ResponsivenessTimer::start()
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if (m_timer.isActive())
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m_timer.startOneShot(responsivenessTimeout);
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void ResponsivenessTimer::stop()
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if (!m_isResponsive) {
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// We got a life sign from the web process!
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m_client->didBecomeResponsive(this);
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m_isResponsive = true;