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/*
* Copyright (C) 2008 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 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 "ContextDestructionObserver.h"
#include "ScriptExecutionContext.h"
namespace WebCore {
ContextDestructionObserver::ContextDestructionObserver(ScriptExecutionContext* scriptExecutionContext)
: m_scriptExecutionContext(0)
{
observeContext(scriptExecutionContext);
}
ContextDestructionObserver::~ContextDestructionObserver()
{
observeContext(0);
}
void ContextDestructionObserver::observeContext(ScriptExecutionContext* scriptExecutionContext)
{
if (m_scriptExecutionContext) {
ASSERT(m_scriptExecutionContext->isContextThread());
m_scriptExecutionContext->willDestroyDestructionObserver(this);
}
m_scriptExecutionContext = scriptExecutionContext;
if (m_scriptExecutionContext) {
ASSERT(m_scriptExecutionContext->isContextThread());
m_scriptExecutionContext->didCreateDestructionObserver(this);
}
}
void ContextDestructionObserver::contextDestroyed()
{
m_scriptExecutionContext = 0;
}
} // namespace WebCore
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