| Index: Source/core/page/DOMTimer.cpp
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| diff --git a/Source/core/page/DOMTimer.cpp b/Source/core/page/DOMTimer.cpp
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| deleted file mode 100644
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| index 16210e59aadf46f125372f0a4c2063a3de11c1fe..0000000000000000000000000000000000000000
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| --- a/Source/core/page/DOMTimer.cpp
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| +++ /dev/null
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| @@ -1,201 +0,0 @@
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| -/*
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| - * Copyright (C) 2008 Apple Inc. All Rights Reserved.
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| - *
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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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| - * are met:
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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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| - *
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| - * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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| - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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| - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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| - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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| - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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| - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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| - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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| - * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| - *
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| - */
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| -
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| -#include "config.h"
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| -#include "core/page/DOMTimer.h"
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| -
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| -#include "bindings/v8/ScheduledAction.h"
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| -#include "core/dom/ScriptExecutionContext.h"
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| -#include "core/inspector/InspectorInstrumentation.h"
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| -#include "wtf/CurrentTime.h"
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| -
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| -using namespace std;
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| -
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| -namespace WebCore {
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| -
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| -static const int maxIntervalForUserGestureForwarding = 1000; // One second matches Gecko.
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| -static const int maxTimerNestingLevel = 5;
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| -static const double oneMillisecond = 0.001;
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| -// Chromium uses a minimum timer interval of 4ms. We'd like to go
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| -// lower; however, there are poorly coded websites out there which do
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| -// create CPU-spinning loops. Using 4ms prevents the CPU from
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| -// spinning too busily and provides a balance between CPU spinning and
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| -// the smallest possible interval timer.
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| -static const double minimumInterval = 0.004;
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| -
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| -static int timerNestingLevel = 0;
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| -
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| -static inline bool shouldForwardUserGesture(int interval, int nestingLevel)
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| -{
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| - return UserGestureIndicator::processingUserGesture()
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| - && interval <= maxIntervalForUserGestureForwarding
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| - && nestingLevel == 1; // Gestures should not be forwarded to nested timers.
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| -}
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| -
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| -double DOMTimer::hiddenPageAlignmentInterval()
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| -{
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| - // Timers on hidden pages are aligned so that they fire once per
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| - // second at most.
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| - return 1.0;
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| -}
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| -
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| -double DOMTimer::visiblePageAlignmentInterval()
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| -{
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| - // Alignment does not apply to timers on visible pages.
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| - return 0;
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| -}
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| -
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| -int DOMTimer::install(ScriptExecutionContext* context, PassOwnPtr<ScheduledAction> action, int timeout, bool singleShot)
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| -{
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| - int timeoutID = context->installNewTimeout(action, timeout, singleShot);
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| - InspectorInstrumentation::didInstallTimer(context, timeoutID, timeout, singleShot);
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| - return timeoutID;
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| -}
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| -
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| -void DOMTimer::removeByID(ScriptExecutionContext* context, int timeoutID)
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| -{
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| - context->removeTimeoutByID(timeoutID);
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| - InspectorInstrumentation::didRemoveTimer(context, timeoutID);
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| -}
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| -
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| -DOMTimer::DOMTimer(ScriptExecutionContext* context, PassOwnPtr<ScheduledAction> action, int interval, bool singleShot, int timeoutID)
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| - : SuspendableTimer(context)
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| - , m_timeoutID(timeoutID)
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| - , m_nestingLevel(timerNestingLevel + 1)
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| - , m_action(action)
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| -{
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| - ASSERT(timeoutID > 0);
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| - if (shouldForwardUserGesture(interval, m_nestingLevel))
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| - m_userGestureToken = UserGestureIndicator::currentToken();
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| -
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| - double intervalMilliseconds = max(oneMillisecond, interval * oneMillisecond);
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| - if (intervalMilliseconds < minimumInterval && m_nestingLevel >= maxTimerNestingLevel)
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| - intervalMilliseconds = minimumInterval;
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| - if (singleShot)
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| - startOneShot(intervalMilliseconds);
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| - else
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| - startRepeating(intervalMilliseconds);
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| -}
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| -
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| -DOMTimer::~DOMTimer()
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| -{
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| -}
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| -
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| -int DOMTimer::timeoutID() const
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| -{
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| - return m_timeoutID;
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| -}
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| -
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| -void DOMTimer::fired()
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| -{
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| - ScriptExecutionContext* context = scriptExecutionContext();
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| - timerNestingLevel = m_nestingLevel;
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| - ASSERT(!context->activeDOMObjectsAreSuspended());
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| - // Only the first execution of a multi-shot timer should get an affirmative user gesture indicator.
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| - UserGestureIndicator gestureIndicator(m_userGestureToken.release());
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| -
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| - InspectorInstrumentationCookie cookie = InspectorInstrumentation::willFireTimer(context, m_timeoutID);
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| -
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| - // Simple case for non-one-shot timers.
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| - if (isActive()) {
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| - if (repeatInterval() && repeatInterval() < minimumInterval) {
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| - m_nestingLevel++;
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| - if (m_nestingLevel >= maxTimerNestingLevel)
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| - augmentRepeatInterval(minimumInterval - repeatInterval());
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| - }
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| -
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| - // No access to member variables after this point, it can delete the timer.
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| - m_action->execute(context);
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| -
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| - InspectorInstrumentation::didFireTimer(cookie);
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| -
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| - return;
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| - }
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| -
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| - // Delete timer before executing the action for one-shot timers.
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| - OwnPtr<ScheduledAction> action = m_action.release();
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| -
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| - // This timer is being deleted; no access to member variables allowed after this point.
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| - context->removeTimeoutByID(m_timeoutID);
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| -
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| - action->execute(context);
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| -
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| - InspectorInstrumentation::didFireTimer(cookie);
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| -
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| - timerNestingLevel = 0;
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| -}
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| -
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| -void DOMTimer::contextDestroyed()
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| -{
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| - SuspendableTimer::contextDestroyed();
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| -}
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| -
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| -void DOMTimer::stop()
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| -{
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| - SuspendableTimer::stop();
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| - // Need to release JS objects potentially protected by ScheduledAction
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| - // because they can form circular references back to the ScriptExecutionContext
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| - // which will cause a memory leak.
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| - m_action.clear();
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| -}
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| -
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| -double DOMTimer::alignedFireTime(double fireTime) const
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| -{
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| - double alignmentInterval = scriptExecutionContext()->timerAlignmentInterval();
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| - if (alignmentInterval) {
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| - double currentTime = monotonicallyIncreasingTime();
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| - if (fireTime <= currentTime)
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| - return fireTime;
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| -
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| - // When a repeating timer is scheduled for exactly the
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| - // background page alignment interval, because it's impossible
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| - // for the timer to be rescheduled instantaneously, it misses
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| - // every other fire time. Avoid this by looking at the next
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| - // fire time rounded both down and up.
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| -
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| - double alignedTimeRoundedDown = floor(fireTime / alignmentInterval) * alignmentInterval;
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| - double alignedTimeRoundedUp = ceil(fireTime / alignmentInterval) * alignmentInterval;
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| -
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| - // If the version rounded down is in the past, discard it
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| - // immediately.
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| -
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| - if (alignedTimeRoundedDown <= currentTime)
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| - return alignedTimeRoundedUp;
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| -
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| - // Only use the rounded-down time if it's within a certain
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| - // tolerance of the fire time. This avoids speeding up timers
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| - // on background pages in the common case.
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| -
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| - if (fireTime - alignedTimeRoundedDown < minimumInterval)
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| - return alignedTimeRoundedDown;
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| -
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| - return alignedTimeRoundedUp;
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| - }
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| -
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| - return fireTime;
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| -}
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| -
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| -} // namespace WebCore
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|
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