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Copy pathArrayBuffer.cpp
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Copy pathArrayBuffer.cpp
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66 lines (56 loc) · 2.27 KB
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/*
* Copyright (C) 2009, 2013 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 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 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 "ArrayBuffer.h"
#include "ArrayBufferNeuteringWatchpoint.h"
#include "JSArrayBufferView.h"
#include "JSCInlines.h"
#include <wtf/RefPtr.h>
namespace JSC {
bool ArrayBuffer::transfer(ArrayBufferContents& result)
{
Ref<ArrayBuffer> protect(*this);
if (!m_contents.m_data) {
result.m_data = 0;
return false;
}
bool isNeuterable = !m_pinCount;
if (isNeuterable)
m_contents.transfer(result);
else {
m_contents.copyTo(result);
if (!result.m_data)
return false;
}
for (size_t i = numberOfIncomingReferences(); i--;) {
JSCell* cell = incomingReferenceAt(i);
if (JSArrayBufferView* view = jsDynamicCast<JSArrayBufferView*>(cell))
view->neuter();
else if (ArrayBufferNeuteringWatchpoint* watchpoint = jsDynamicCast<ArrayBufferNeuteringWatchpoint*>(cell))
watchpoint->set()->fireAll();
}
return true;
}
} // namespace JSC