diff options
Diffstat (limited to 'Source/WebCore/dom/ContextDestructionObserver.cpp')
-rw-r--r-- | Source/WebCore/dom/ContextDestructionObserver.cpp | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/Source/WebCore/dom/ContextDestructionObserver.cpp b/Source/WebCore/dom/ContextDestructionObserver.cpp new file mode 100644 index 000000000..2fdd556e3 --- /dev/null +++ b/Source/WebCore/dom/ContextDestructionObserver.cpp @@ -0,0 +1,58 @@ +/* + * 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(scriptExecutionContext) +{ + if (!m_scriptExecutionContext) + return; + + ASSERT(m_scriptExecutionContext->isContextThread()); + m_scriptExecutionContext->didCreateDestructionObserver(this); +} + +ContextDestructionObserver::~ContextDestructionObserver() +{ + if (!m_scriptExecutionContext) + return; + + ASSERT(m_scriptExecutionContext->isContextThread()); + m_scriptExecutionContext->willDestroyDestructionObserver(this); +} + +void ContextDestructionObserver::contextDestroyed() +{ + m_scriptExecutionContext = 0; +} + +} // namespace WebCore |