Revert "Extract ContextLifecycleNotifier from ScriptExecutionContext."

Source/core/dom/ContextLifecycleNotifier.cpp

-/*
- * 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 "config.h"
-#include "core/dom/ContextLifecycleNotifier.h"
-
-#include "core/dom/WebCoreMemoryInstrumentation.h"
-#include "wtf/TemporaryChange.h"
-
-namespace WebCore {
-
-ContextLifecycleNotifier::ContextLifecycleNotifier(ScriptExecutionContext* context)
-    : m_context(context)
-    , m_iterating(false)
-    , m_inDestructor(false)
-{
-}
-
-ContextLifecycleNotifier::~ContextLifecycleNotifier()
-{
-    m_inDestructor = true;
-    for (ContextObserverSet::iterator iter = m_destructionObservers.begin(); iter != m_destructionObservers.end(); iter = m_destructionObservers.begin()) {
-        ContextDestructionObserver* observer = *iter;
-        m_destructionObservers.remove(observer);
-        ASSERT(observer->scriptExecutionContext() == m_context);
-        observer->contextDestroyed();
-    }
-}
-
-void ContextLifecycleNotifier::addObserver(ContextDestructionObserver* observer, ContextDestructionObserver::Type as)
-{
-    RELEASE_ASSERT(!m_inDestructor);
-    RELEASE_ASSERT(!m_iterating);
-    m_destructionObservers.add(observer);
-    if (as == ContextDestructionObserver::ActiveDOMObjectType)
-        m_activeDOMObjects.add(static_cast<ActiveDOMObject*>(observer));
-}
-
-void ContextLifecycleNotifier::removeObserver(ContextDestructionObserver* observer, ContextDestructionObserver::Type as)
-{
-    RELEASE_ASSERT(!m_inDestructor);
-    RELEASE_ASSERT(!m_iterating);
-    m_destructionObservers.remove(observer);
-    if (as == ContextDestructionObserver::ActiveDOMObjectType)
-        m_activeDOMObjects.remove(static_cast<ActiveDOMObject*>(observer));
-}
-
-void ContextLifecycleNotifier::notifyResumingActiveDOMObjects()
-{
-    TemporaryChange<bool> scope(this->m_iterating, true);
-    ActiveDOMObjectSet::iterator activeObjectsEnd = m_activeDOMObjects.end();
-    for (ActiveDOMObjectSet::iterator iter = m_activeDOMObjects.begin(); iter != activeObjectsEnd; ++iter) {
-        ASSERT((*iter)->scriptExecutionContext() == m_context);
-        ASSERT((*iter)->suspendIfNeededCalled());
-        (*iter)->resume();
-    }
-}
-
-void ContextLifecycleNotifier::notifySuspendingActiveDOMObjects(ActiveDOMObject::ReasonForSuspension why)
-{
-    TemporaryChange<bool> scope(this->m_iterating, true);
-    ActiveDOMObjectSet::iterator activeObjectsEnd = m_activeDOMObjects.end();
-    for (ActiveDOMObjectSet::iterator iter = m_activeDOMObjects.begin(); iter != activeObjectsEnd; ++iter) {
-        ASSERT((*iter)->scriptExecutionContext() == m_context);
-        ASSERT((*iter)->suspendIfNeededCalled());
-        (*iter)->suspend(why);
-    }
-}
-
-void ContextLifecycleNotifier::notifyStoppingActiveDOMObjects()
-{
-    TemporaryChange<bool> scope(this->m_iterating, true);
-    ActiveDOMObjectSet::iterator activeObjectsEnd = m_activeDOMObjects.end();
-    for (ActiveDOMObjectSet::iterator iter = m_activeDOMObjects.begin(); iter != activeObjectsEnd; ++iter) {
-        ASSERT((*iter)->scriptExecutionContext() == m_context);
-        ASSERT((*iter)->suspendIfNeededCalled());
-        (*iter)->stop();
-    }
-}
-
-bool ContextLifecycleNotifier::canSuspendActiveDOMObjects()
-{
-    TemporaryChange<bool> scope(this->m_iterating, true);
-    ActiveDOMObjectSet::iterator activeObjectsEnd = m_activeDOMObjects.end();
-    for (ActiveDOMObjectSet::const_iterator iter = m_activeDOMObjects.begin(); iter != activeObjectsEnd; ++iter) {
-        ASSERT((*iter)->scriptExecutionContext() == m_context);
-        ASSERT((*iter)->suspendIfNeededCalled());
-        if (!(*iter)->canSuspend())
-            return false;
-    }
-
-    return true;
-}
-
-bool ContextLifecycleNotifier::hasPendingActivity() const
-{
-    ActiveDOMObjectSet::const_iterator activeObjectsEnd = activeDOMObjects().end();
-    for (ActiveDOMObjectSet::const_iterator iter = activeDOMObjects().begin(); iter != activeObjectsEnd; ++iter) {
-        if ((*iter)->hasPendingActivity())
-            return true;
-    }
-
-    return false;
-}
-
-void ContextLifecycleNotifier::reportMemoryUsage(WTF::MemoryObjectInfo* memoryObjectInfo) const
-{
-    MemoryClassInfo info(memoryObjectInfo, this, WebCoreMemoryTypes::DOM);
-    ActiveDOMObjectSet::iterator activeObjectsEnd = m_activeDOMObjects.end();
-    for (ActiveDOMObjectSet::iterator iter = m_activeDOMObjects.begin(); iter != activeObjectsEnd; ++iter)
-        info.addMember(*iter, "activeDOMObject", WTF::RetainingPointer);
-}
-
-} // namespace WebCore
-