15c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)/* 25c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Copyright (C) 2009 Apple Inc. All rights reserved. 35c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 45c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * Redistribution and use in source and binary forms, with or without 55c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * modification, are permitted provided that the following conditions 65c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * are met: 75c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 1. Redistributions of source code must retain the above copyright 85c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer. 95c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 2. Redistributions in binary form must reproduce the above copyright 105c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * notice, this list of conditions and the following disclaimer in the 115c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * documentation and/or other materials provided with the distribution. 125c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * 135c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 145c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 155c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 165c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 175c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 185c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 195c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 205c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 215c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 225c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2302772c6a72f1ee0b226341a4f4439970c29fc861Ben Murdoch * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 245c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) */ 255c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 265c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)#include "config.h" 2781a5157921f1d2a7ff6aae115bfe3c139b38a5c8Torne (Richard Coles)#include "wtf/ArrayBuffer.h" 285c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 2981a5157921f1d2a7ff6aae115bfe3c139b38a5c8Torne (Richard Coles)#include "wtf/ArrayBufferView.h" 3081a5157921f1d2a7ff6aae115bfe3c139b38a5c8Torne (Richard Coles)#include "wtf/RefPtr.h" 315c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 325c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)namespace WTF { 335c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 3409380295ba73501a205346becac22c6978e4671dTorne (Richard Coles)bool ArrayBuffer::transfer(ArrayBufferContents& result) 355c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 365c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) RefPtr<ArrayBuffer> keepAlive(this); 375c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 38e52495584422c5edb5b2944981473a2e208da323Torne (Richard Coles) if (!m_contents.data()) { 39e52495584422c5edb5b2944981473a2e208da323Torne (Richard Coles) result.clear(); 405c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return false; 415c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 425c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 43fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch bool allViewsAreNeuterable = true; 44fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch for (ArrayBufferView* i = m_firstView; i; i = i->m_nextView) { 45fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch if (!i->isNeuterable()) 46fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch allViewsAreNeuterable = false; 47fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch } 48fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch 49fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch if (allViewsAreNeuterable) { 50fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch m_contents.transfer(result); 51fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch } else { 52fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch m_contents.copyTo(result); 53fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch if (!result.data()) 54fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch return false; 55fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch } 565c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 575c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) while (m_firstView) { 585c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ArrayBufferView* current = m_firstView; 595c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) removeView(current); 60fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch if (allViewsAreNeuterable || current->isNeuterable()) 61fff8884795cb540f87cf6e6d67b629519b00eb8bBen Murdoch current->neuter(); 625c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) } 63e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch 64e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch m_isNeutered = true; 65e69819bd8e388ea4ad1636a19aa6b2eed4952191Ben Murdoch 665c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) return true; 675c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 685c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 695c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)void ArrayBuffer::addView(ArrayBufferView* view) 705c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 715c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) view->m_buffer = this; 725c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) view->m_prevView = 0; 735c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) view->m_nextView = m_firstView; 745c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (m_firstView) 755c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_firstView->m_prevView = view; 765c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_firstView = view; 775c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 785c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 795c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)void ArrayBuffer::removeView(ArrayBufferView* view) 805c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles){ 815c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) ASSERT(this == view->m_buffer); 825c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (view->m_nextView) 835c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) view->m_nextView->m_prevView = view->m_prevView; 845c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (view->m_prevView) 855c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) view->m_prevView->m_nextView = view->m_nextView; 865c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) if (m_firstView == view) 875c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) m_firstView = view->m_nextView; 885c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) view->m_prevView = view->m_nextView = 0; 895c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 905c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles) 915c87bf8b86a7c82ef50fb7a89697d8e02e2553beTorne (Richard Coles)} 92