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 "ArgumentEncoder.h" 28 29#include <algorithm> 30#include <stdio.h> 31 32namespace CoreIPC { 33 34PassOwnPtr<ArgumentEncoder> ArgumentEncoder::create(uint64_t destinationID) 35{ 36 return adoptPtr(new ArgumentEncoder(destinationID)); 37} 38 39ArgumentEncoder::ArgumentEncoder(uint64_t destinationID) 40 : m_buffer(0) 41 , m_bufferPointer(0) 42 , m_bufferSize(0) 43 , m_bufferCapacity(0) 44{ 45 // Encode the destination ID. 46 encodeUInt64(destinationID); 47} 48 49ArgumentEncoder::~ArgumentEncoder() 50{ 51 if (m_buffer) 52 fastFree(m_buffer); 53#if !PLATFORM(QT) && !PLATFORM(GTK) 54 // FIXME: We need to dispose of the attachments in cases of failure. 55#else 56 for (int i = 0; i < m_attachments.size(); ++i) 57 m_attachments[i].dispose(); 58#endif 59} 60 61static inline size_t roundUpToAlignment(size_t value, unsigned alignment) 62{ 63 return ((value + alignment - 1) / alignment) * alignment; 64} 65 66uint8_t* ArgumentEncoder::grow(unsigned alignment, size_t size) 67{ 68 size_t alignedSize = roundUpToAlignment(m_bufferSize, alignment); 69 70 if (alignedSize + size > m_bufferCapacity) { 71 size_t newCapacity = std::max(alignedSize + size, std::max(static_cast<size_t>(32), m_bufferCapacity + m_bufferCapacity / 4 + 1)); 72 if (!m_buffer) 73 m_buffer = static_cast<uint8_t*>(fastMalloc(newCapacity)); 74 else 75 m_buffer = static_cast<uint8_t*>(fastRealloc(m_buffer, newCapacity)); 76 77 // FIXME: What should we do if allocating memory fails? 78 79 m_bufferCapacity = newCapacity; 80 } 81 82 m_bufferSize = alignedSize + size; 83 m_bufferPointer = m_buffer + alignedSize + size; 84 85 return m_buffer + alignedSize; 86} 87 88void ArgumentEncoder::encodeBytes(const uint8_t* bytes, size_t size) 89{ 90 // Encode the size. 91 encodeUInt64(static_cast<uint64_t>(size)); 92 93 uint8_t* buffer = grow(1, size); 94 95 memcpy(buffer, bytes, size); 96} 97 98void ArgumentEncoder::encodeBool(bool n) 99{ 100 uint8_t* buffer = grow(sizeof(n), sizeof(n)); 101 102 *reinterpret_cast<bool*>(buffer) = n; 103} 104 105void ArgumentEncoder::encodeUInt32(uint32_t n) 106{ 107 uint8_t* buffer = grow(sizeof(n), sizeof(n)); 108 109 *reinterpret_cast<uint32_t*>(buffer) = n; 110} 111 112void ArgumentEncoder::encodeUInt64(uint64_t n) 113{ 114 uint8_t* buffer = grow(sizeof(n), sizeof(n)); 115 116 *reinterpret_cast<uint64_t*>(buffer) = n; 117} 118 119void ArgumentEncoder::encodeInt32(int32_t n) 120{ 121 uint8_t* buffer = grow(sizeof(n), sizeof(n)); 122 123 *reinterpret_cast<int32_t*>(buffer) = n; 124} 125 126void ArgumentEncoder::encodeInt64(int64_t n) 127{ 128 uint8_t* buffer = grow(sizeof(n), sizeof(n)); 129 130 *reinterpret_cast<int64_t*>(buffer) = n; 131} 132 133void ArgumentEncoder::encodeFloat(float n) 134{ 135 uint8_t* buffer = grow(sizeof(n), sizeof(n)); 136 137 *reinterpret_cast<float*>(buffer) = n; 138} 139 140void ArgumentEncoder::encodeDouble(double n) 141{ 142 uint8_t* buffer = grow(sizeof(n), sizeof(n)); 143 144 *reinterpret_cast<double*>(buffer) = n; 145} 146 147void ArgumentEncoder::addAttachment(const Attachment& attachment) 148{ 149 m_attachments.append(attachment); 150} 151 152Vector<Attachment> ArgumentEncoder::releaseAttachments() 153{ 154 Vector<Attachment> newList; 155 newList.swap(m_attachments); 156 return newList; 157} 158 159#ifndef NDEBUG 160void ArgumentEncoder::debug() 161{ 162 printf("ArgumentEncoder::debug()\n"); 163 printf("Number of Attachments: %d\n", (int)m_attachments.size()); 164 printf("Size of buffer: %d\n", (int)m_bufferSize); 165} 166#endif 167 168} // namespace CoreIPC 169