1/* 2 * Copyright (C) 2010 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. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "HandleStack.h" 28 29#include "HeapRootVisitor.h" 30#include "JSObject.h" 31#include "JSCInlines.h" 32 33namespace JSC { 34 35HandleStack::HandleStack() 36#ifndef NDEBUG 37 : m_scopeDepth(0) 38#endif 39{ 40 grow(); 41} 42 43void HandleStack::visit(HeapRootVisitor& heapRootVisitor) 44{ 45 const Vector<HandleSlot>& blocks = m_blockStack.blocks(); 46 size_t blockLength = m_blockStack.blockLength; 47 48 int end = blocks.size() - 1; 49 for (int i = 0; i < end; ++i) { 50 HandleSlot block = blocks[i]; 51 heapRootVisitor.visit(block, blockLength); 52 } 53 HandleSlot block = blocks[end]; 54 heapRootVisitor.visit(block, m_frame.m_next - block); 55} 56 57void HandleStack::grow() 58{ 59 HandleSlot block = m_blockStack.grow(); 60 m_frame.m_next = block; 61 m_frame.m_end = block + m_blockStack.blockLength; 62} 63 64} 65