1/* 2 * Copyright (C) 2009, 2013 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "ArrayBuffer.h" 28 29#include "ArrayBufferNeuteringWatchpoint.h" 30#include "JSArrayBufferView.h" 31#include "JSCInlines.h" 32#include <wtf/RefPtr.h> 33 34namespace JSC { 35 36bool ArrayBuffer::transfer(ArrayBufferContents& result) 37{ 38 Ref<ArrayBuffer> protect(*this); 39 40 if (!m_contents.m_data) { 41 result.m_data = 0; 42 return false; 43 } 44 45 bool isNeuterable = !m_pinCount; 46 47 if (isNeuterable) 48 m_contents.transfer(result); 49 else { 50 m_contents.copyTo(result); 51 if (!result.m_data) 52 return false; 53 } 54 55 for (size_t i = numberOfIncomingReferences(); i--;) { 56 JSCell* cell = incomingReferenceAt(i); 57 if (JSArrayBufferView* view = jsDynamicCast<JSArrayBufferView*>(cell)) 58 view->neuter(); 59 else if (ArrayBufferNeuteringWatchpoint* watchpoint = jsDynamicCast<ArrayBufferNeuteringWatchpoint*>(cell)) 60 watchpoint->set()->fireAll(); 61 } 62 return true; 63} 64 65} // namespace JSC 66 67