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/*
* Copyright (C) 2008 Apple Inc. All Rights Reserved.
* Copyright (C) 2013 Google 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 COMPUTER, INC. ``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 COMPUTER, INC. OR
* 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.
*
*/
#include "core/dom/ContextLifecycleNotifier.h"
#include "core/dom/SuspendableObject.h"
#include "wtf/AutoReset.h"
namespace blink {
void ContextLifecycleNotifier::notifyResumingSuspendableObjects() {
AutoReset<IterationState> scope(&m_iterationState, AllowingNone);
for (ContextLifecycleObserver* observer : m_observers) {
if (observer->observerType() !=
ContextLifecycleObserver::SuspendableObjectType)
continue;
SuspendableObject* suspendableObject =
static_cast<SuspendableObject*>(observer);
#if DCHECK_IS_ON()
DCHECK_EQ(suspendableObject->getExecutionContext(), context());
DCHECK(suspendableObject->suspendIfNeededCalled());
#endif
suspendableObject->resume();
}
}
void ContextLifecycleNotifier::notifySuspendingSuspendableObjects() {
AutoReset<IterationState> scope(&m_iterationState, AllowingNone);
for (ContextLifecycleObserver* observer : m_observers) {
if (observer->observerType() !=
ContextLifecycleObserver::SuspendableObjectType)
continue;
SuspendableObject* suspendableObject =
static_cast<SuspendableObject*>(observer);
#if DCHECK_IS_ON()
DCHECK_EQ(suspendableObject->getExecutionContext(), context());
DCHECK(suspendableObject->suspendIfNeededCalled());
#endif
suspendableObject->suspend();
}
}
unsigned ContextLifecycleNotifier::suspendableObjectCount() const {
DCHECK(!isIteratingOverObservers());
unsigned suspendableObjects = 0;
for (ContextLifecycleObserver* observer : m_observers) {
if (observer->observerType() !=
ContextLifecycleObserver::SuspendableObjectType)
continue;
suspendableObjects++;
}
return suspendableObjects;
}
#if DCHECK_IS_ON()
bool ContextLifecycleNotifier::contains(SuspendableObject* object) const {
DCHECK(!isIteratingOverObservers());
for (ContextLifecycleObserver* observer : m_observers) {
if (observer->observerType() !=
ContextLifecycleObserver::SuspendableObjectType)
continue;
SuspendableObject* suspendableObject =
static_cast<SuspendableObject*>(observer);
if (suspendableObject == object)
return true;
}
return false;
}
#endif
} // namespace blink
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