jbates@chromium.org | 0fc8736 | 2012-03-08 05:42:56 +0900 | [diff] [blame] | 1 | // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
license.bot | f003cfe | 2008-08-24 09:55:55 +0900 | [diff] [blame] | 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 4 | |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 5 | #include "base/pickle.h" |
| 6 | |
maruel@google.com | 825f879 | 2008-08-07 05:35:17 +0900 | [diff] [blame] | 7 | #include <stdlib.h> |
| 8 | |
thestig@chromium.org | eb9afb4 | 2009-10-28 13:21:01 +0900 | [diff] [blame] | 9 | #include <algorithm> // for max() |
maruel@google.com | 825f879 | 2008-08-07 05:35:17 +0900 | [diff] [blame] | 10 | |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 11 | //------------------------------------------------------------------------------ |
| 12 | |
brettw@chromium.org | 5b04085 | 2013-12-03 09:39:26 +0900 | [diff] [blame] | 13 | using base::char16; |
| 14 | using base::string16; |
| 15 | |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 16 | // static |
| 17 | const int Pickle::kPayloadUnit = 64; |
| 18 | |
thestig@chromium.org | f0c8f44 | 2011-10-11 07:20:33 +0900 | [diff] [blame] | 19 | static const size_t kCapacityReadOnly = static_cast<size_t>(-1); |
deanm@google.com | 19650de | 2008-08-13 23:57:51 +0900 | [diff] [blame] | 20 | |
jbates@chromium.org | 0fc8736 | 2012-03-08 05:42:56 +0900 | [diff] [blame] | 21 | PickleIterator::PickleIterator(const Pickle& pickle) |
halyavin@google.com | 0398c72 | 2014-06-03 08:23:49 +0900 | [diff] [blame] | 22 | : payload_(pickle.payload()), |
| 23 | read_index_(0), |
| 24 | end_index_(pickle.payload_size()) { |
jbates@chromium.org | 0fc8736 | 2012-03-08 05:42:56 +0900 | [diff] [blame] | 25 | } |
| 26 | |
| 27 | template <typename Type> |
| 28 | inline bool PickleIterator::ReadBuiltinType(Type* result) { |
| 29 | const char* read_from = GetReadPointerAndAdvance<Type>(); |
| 30 | if (!read_from) |
| 31 | return false; |
| 32 | if (sizeof(Type) > sizeof(uint32)) |
| 33 | memcpy(result, read_from, sizeof(*result)); |
| 34 | else |
| 35 | *result = *reinterpret_cast<const Type*>(read_from); |
| 36 | return true; |
| 37 | } |
| 38 | |
halyavin@google.com | 0398c72 | 2014-06-03 08:23:49 +0900 | [diff] [blame] | 39 | inline void PickleIterator::Advance(size_t size) { |
| 40 | size_t aligned_size = AlignInt(size, sizeof(uint32_t)); |
| 41 | if (end_index_ - read_index_ < aligned_size) { |
| 42 | read_index_ = end_index_; |
| 43 | } else { |
| 44 | read_index_ += aligned_size; |
| 45 | } |
| 46 | } |
| 47 | |
jbates@chromium.org | 0fc8736 | 2012-03-08 05:42:56 +0900 | [diff] [blame] | 48 | template<typename Type> |
| 49 | inline const char* PickleIterator::GetReadPointerAndAdvance() { |
halyavin@google.com | 0398c72 | 2014-06-03 08:23:49 +0900 | [diff] [blame] | 50 | if (sizeof(Type) > end_index_ - read_index_) { |
| 51 | read_index_ = end_index_; |
jbates@chromium.org | 0fc8736 | 2012-03-08 05:42:56 +0900 | [diff] [blame] | 52 | return NULL; |
halyavin@google.com | 0398c72 | 2014-06-03 08:23:49 +0900 | [diff] [blame] | 53 | } |
| 54 | const char* current_read_ptr = payload_ + read_index_; |
| 55 | Advance(sizeof(Type)); |
jbates@chromium.org | 0fc8736 | 2012-03-08 05:42:56 +0900 | [diff] [blame] | 56 | return current_read_ptr; |
| 57 | } |
| 58 | |
| 59 | const char* PickleIterator::GetReadPointerAndAdvance(int num_bytes) { |
halyavin@google.com | 0398c72 | 2014-06-03 08:23:49 +0900 | [diff] [blame] | 60 | if (num_bytes < 0 || |
| 61 | end_index_ - read_index_ < static_cast<size_t>(num_bytes)) { |
| 62 | read_index_ = end_index_; |
glider@chromium.org | fcfb825 | 2012-03-14 02:17:56 +0900 | [diff] [blame] | 63 | return NULL; |
halyavin@google.com | 0398c72 | 2014-06-03 08:23:49 +0900 | [diff] [blame] | 64 | } |
| 65 | const char* current_read_ptr = payload_ + read_index_; |
| 66 | Advance(num_bytes); |
jbates@chromium.org | 0fc8736 | 2012-03-08 05:42:56 +0900 | [diff] [blame] | 67 | return current_read_ptr; |
| 68 | } |
| 69 | |
halyavin@google.com | 0398c72 | 2014-06-03 08:23:49 +0900 | [diff] [blame] | 70 | inline const char* PickleIterator::GetReadPointerAndAdvance( |
| 71 | int num_elements, |
| 72 | size_t size_element) { |
jbates@chromium.org | 0fc8736 | 2012-03-08 05:42:56 +0900 | [diff] [blame] | 73 | // Check for int32 overflow. |
| 74 | int64 num_bytes = static_cast<int64>(num_elements) * size_element; |
| 75 | int num_bytes32 = static_cast<int>(num_bytes); |
| 76 | if (num_bytes != static_cast<int64>(num_bytes32)) |
| 77 | return NULL; |
| 78 | return GetReadPointerAndAdvance(num_bytes32); |
| 79 | } |
| 80 | |
| 81 | bool PickleIterator::ReadBool(bool* result) { |
| 82 | return ReadBuiltinType(result); |
| 83 | } |
| 84 | |
| 85 | bool PickleIterator::ReadInt(int* result) { |
| 86 | return ReadBuiltinType(result); |
| 87 | } |
| 88 | |
| 89 | bool PickleIterator::ReadLong(long* result) { |
| 90 | return ReadBuiltinType(result); |
| 91 | } |
| 92 | |
jbates@chromium.org | 0fc8736 | 2012-03-08 05:42:56 +0900 | [diff] [blame] | 93 | bool PickleIterator::ReadUInt16(uint16* result) { |
| 94 | return ReadBuiltinType(result); |
| 95 | } |
| 96 | |
| 97 | bool PickleIterator::ReadUInt32(uint32* result) { |
| 98 | return ReadBuiltinType(result); |
| 99 | } |
| 100 | |
| 101 | bool PickleIterator::ReadInt64(int64* result) { |
| 102 | return ReadBuiltinType(result); |
| 103 | } |
| 104 | |
| 105 | bool PickleIterator::ReadUInt64(uint64* result) { |
| 106 | return ReadBuiltinType(result); |
| 107 | } |
| 108 | |
rbyers@chromium.org | a1f0b98 | 2012-11-29 00:40:58 +0900 | [diff] [blame] | 109 | bool PickleIterator::ReadFloat(float* result) { |
piman@chromium.org | 2135b96 | 2013-11-18 09:50:25 +0900 | [diff] [blame] | 110 | // crbug.com/315213 |
| 111 | // The source data may not be properly aligned, and unaligned float reads |
| 112 | // cause SIGBUS on some ARM platforms, so force using memcpy to copy the data |
| 113 | // into the result. |
| 114 | const char* read_from = GetReadPointerAndAdvance<float>(); |
| 115 | if (!read_from) |
| 116 | return false; |
| 117 | memcpy(result, read_from, sizeof(*result)); |
| 118 | return true; |
rbyers@chromium.org | a1f0b98 | 2012-11-29 00:40:58 +0900 | [diff] [blame] | 119 | } |
| 120 | |
mostynb@opera.com | f0b7853 | 2014-07-15 07:50:32 +0900 | [diff] [blame] | 121 | bool PickleIterator::ReadDouble(double* result) { |
| 122 | // crbug.com/315213 |
| 123 | // The source data may not be properly aligned, and unaligned double reads |
| 124 | // cause SIGBUS on some ARM platforms, so force using memcpy to copy the data |
| 125 | // into the result. |
| 126 | const char* read_from = GetReadPointerAndAdvance<double>(); |
| 127 | if (!read_from) |
| 128 | return false; |
| 129 | memcpy(result, read_from, sizeof(*result)); |
| 130 | return true; |
| 131 | } |
| 132 | |
jbates@chromium.org | 0fc8736 | 2012-03-08 05:42:56 +0900 | [diff] [blame] | 133 | bool PickleIterator::ReadString(std::string* result) { |
| 134 | int len; |
| 135 | if (!ReadInt(&len)) |
| 136 | return false; |
| 137 | const char* read_from = GetReadPointerAndAdvance(len); |
| 138 | if (!read_from) |
| 139 | return false; |
| 140 | |
| 141 | result->assign(read_from, len); |
| 142 | return true; |
| 143 | } |
| 144 | |
| 145 | bool PickleIterator::ReadWString(std::wstring* result) { |
| 146 | int len; |
| 147 | if (!ReadInt(&len)) |
| 148 | return false; |
| 149 | const char* read_from = GetReadPointerAndAdvance(len, sizeof(wchar_t)); |
| 150 | if (!read_from) |
| 151 | return false; |
| 152 | |
| 153 | result->assign(reinterpret_cast<const wchar_t*>(read_from), len); |
| 154 | return true; |
| 155 | } |
| 156 | |
| 157 | bool PickleIterator::ReadString16(string16* result) { |
| 158 | int len; |
| 159 | if (!ReadInt(&len)) |
| 160 | return false; |
| 161 | const char* read_from = GetReadPointerAndAdvance(len, sizeof(char16)); |
| 162 | if (!read_from) |
| 163 | return false; |
| 164 | |
| 165 | result->assign(reinterpret_cast<const char16*>(read_from), len); |
| 166 | return true; |
| 167 | } |
| 168 | |
| 169 | bool PickleIterator::ReadData(const char** data, int* length) { |
| 170 | *length = 0; |
| 171 | *data = 0; |
| 172 | |
| 173 | if (!ReadInt(length)) |
| 174 | return false; |
| 175 | |
| 176 | return ReadBytes(data, *length); |
| 177 | } |
| 178 | |
| 179 | bool PickleIterator::ReadBytes(const char** data, int length) { |
| 180 | const char* read_from = GetReadPointerAndAdvance(length); |
| 181 | if (!read_from) |
| 182 | return false; |
| 183 | *data = read_from; |
| 184 | return true; |
| 185 | } |
| 186 | |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 187 | // Payload is uint32 aligned. |
| 188 | |
| 189 | Pickle::Pickle() |
| 190 | : header_(NULL), |
| 191 | header_size_(sizeof(Header)), |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 192 | capacity_after_header_(0), |
| 193 | write_offset_(0) { |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 194 | Resize(kPayloadUnit); |
| 195 | header_->payload_size = 0; |
| 196 | } |
| 197 | |
| 198 | Pickle::Pickle(int header_size) |
| 199 | : header_(NULL), |
| 200 | header_size_(AlignInt(header_size, sizeof(uint32))), |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 201 | capacity_after_header_(0), |
| 202 | write_offset_(0) { |
pkasting@chromium.org | d23fe1a | 2011-04-01 05:34:25 +0900 | [diff] [blame] | 203 | DCHECK_GE(static_cast<size_t>(header_size), sizeof(Header)); |
kushi.p@gmail.com | e486977 | 2011-04-22 22:13:07 +0900 | [diff] [blame] | 204 | DCHECK_LE(header_size, kPayloadUnit); |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 205 | Resize(kPayloadUnit); |
| 206 | header_->payload_size = 0; |
| 207 | } |
| 208 | |
bbudge@chromium.org | ab4c6bc | 2013-11-05 07:28:12 +0900 | [diff] [blame] | 209 | Pickle::Pickle(const char* data, int data_len) |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 210 | : header_(reinterpret_cast<Header*>(const_cast<char*>(data))), |
rvargas@google.com | 8d9b2b9 | 2010-11-16 04:31:23 +0900 | [diff] [blame] | 211 | header_size_(0), |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 212 | capacity_after_header_(kCapacityReadOnly), |
| 213 | write_offset_(0) { |
bbudge@chromium.org | ab4c6bc | 2013-11-05 07:28:12 +0900 | [diff] [blame] | 214 | if (data_len >= static_cast<int>(sizeof(Header))) |
rvargas@google.com | 8d9b2b9 | 2010-11-16 04:31:23 +0900 | [diff] [blame] | 215 | header_size_ = data_len - header_->payload_size; |
| 216 | |
bbudge@chromium.org | ab4c6bc | 2013-11-05 07:28:12 +0900 | [diff] [blame] | 217 | if (header_size_ > static_cast<unsigned int>(data_len)) |
rvargas@google.com | 8d9b2b9 | 2010-11-16 04:31:23 +0900 | [diff] [blame] | 218 | header_size_ = 0; |
| 219 | |
| 220 | if (header_size_ != AlignInt(header_size_, sizeof(uint32))) |
| 221 | header_size_ = 0; |
| 222 | |
| 223 | // If there is anything wrong with the data, we're not going to use it. |
| 224 | if (!header_size_) |
| 225 | header_ = NULL; |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | Pickle::Pickle(const Pickle& other) |
| 229 | : header_(NULL), |
| 230 | header_size_(other.header_size_), |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 231 | capacity_after_header_(0), |
| 232 | write_offset_(other.write_offset_) { |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 233 | size_t payload_size = header_size_ + other.header_->payload_size; |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 234 | Resize(payload_size); |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 235 | memcpy(header_, other.header_, payload_size); |
| 236 | } |
| 237 | |
| 238 | Pickle::~Pickle() { |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 239 | if (capacity_after_header_ != kCapacityReadOnly) |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 240 | free(header_); |
| 241 | } |
| 242 | |
| 243 | Pickle& Pickle::operator=(const Pickle& other) { |
jar@chromium.org | 4e105f1 | 2009-08-08 08:13:35 +0900 | [diff] [blame] | 244 | if (this == &other) { |
| 245 | NOTREACHED(); |
| 246 | return *this; |
| 247 | } |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 248 | if (capacity_after_header_ == kCapacityReadOnly) { |
jar@chromium.org | 766c5a0 | 2009-08-03 16:01:47 +0900 | [diff] [blame] | 249 | header_ = NULL; |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 250 | capacity_after_header_ = 0; |
jar@chromium.org | 766c5a0 | 2009-08-03 16:01:47 +0900 | [diff] [blame] | 251 | } |
| 252 | if (header_size_ != other.header_size_) { |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 253 | free(header_); |
| 254 | header_ = NULL; |
| 255 | header_size_ = other.header_size_; |
| 256 | } |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 257 | Resize(other.header_->payload_size); |
jar@chromium.org | 4e105f1 | 2009-08-08 08:13:35 +0900 | [diff] [blame] | 258 | memcpy(header_, other.header_, |
| 259 | other.header_size_ + other.header_->payload_size); |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 260 | write_offset_ = other.write_offset_; |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 261 | return *this; |
| 262 | } |
| 263 | |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 264 | bool Pickle::WriteString(const std::string& value) { |
| 265 | if (!WriteInt(static_cast<int>(value.size()))) |
| 266 | return false; |
| 267 | |
| 268 | return WriteBytes(value.data(), static_cast<int>(value.size())); |
| 269 | } |
| 270 | |
| 271 | bool Pickle::WriteWString(const std::wstring& value) { |
| 272 | if (!WriteInt(static_cast<int>(value.size()))) |
| 273 | return false; |
| 274 | |
| 275 | return WriteBytes(value.data(), |
estade@chromium.org | 38a18bf | 2009-03-04 12:36:36 +0900 | [diff] [blame] | 276 | static_cast<int>(value.size() * sizeof(wchar_t))); |
| 277 | } |
| 278 | |
| 279 | bool Pickle::WriteString16(const string16& value) { |
| 280 | if (!WriteInt(static_cast<int>(value.size()))) |
| 281 | return false; |
| 282 | |
| 283 | return WriteBytes(value.data(), |
| 284 | static_cast<int>(value.size()) * sizeof(char16)); |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 285 | } |
| 286 | |
| 287 | bool Pickle::WriteData(const char* data, int length) { |
wtc@chromium.org | c2f15c5 | 2009-07-29 06:00:03 +0900 | [diff] [blame] | 288 | return length >= 0 && WriteInt(length) && WriteBytes(data, length); |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 289 | } |
| 290 | |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 291 | bool Pickle::WriteBytes(const void* data, int length) { |
| 292 | WriteBytesCommon(data, length); |
erg@google.com | 67a2543 | 2011-01-08 05:23:43 +0900 | [diff] [blame] | 293 | return true; |
| 294 | } |
| 295 | |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 296 | void Pickle::Reserve(size_t length) { |
| 297 | size_t data_len = AlignInt(length, sizeof(uint32)); |
| 298 | DCHECK_GE(data_len, length); |
erg@google.com | 67a2543 | 2011-01-08 05:23:43 +0900 | [diff] [blame] | 299 | #ifdef ARCH_CPU_64_BITS |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 300 | DCHECK_LE(data_len, kuint32max); |
erg@google.com | 67a2543 | 2011-01-08 05:23:43 +0900 | [diff] [blame] | 301 | #endif |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 302 | DCHECK_LE(write_offset_, kuint32max - data_len); |
| 303 | size_t new_size = write_offset_ + data_len; |
| 304 | if (new_size > capacity_after_header_) |
| 305 | Resize(capacity_after_header_ * 2 + new_size); |
erg@google.com | 67a2543 | 2011-01-08 05:23:43 +0900 | [diff] [blame] | 306 | } |
| 307 | |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 308 | void Pickle::Resize(size_t new_capacity) { |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 309 | new_capacity = AlignInt(new_capacity, kPayloadUnit); |
| 310 | |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 311 | CHECK_NE(capacity_after_header_, kCapacityReadOnly); |
| 312 | void* p = realloc(header_, header_size_ + new_capacity); |
| 313 | CHECK(p); |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 314 | header_ = reinterpret_cast<Header*>(p); |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 315 | capacity_after_header_ = new_capacity; |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | // static |
| 319 | const char* Pickle::FindNext(size_t header_size, |
| 320 | const char* start, |
| 321 | const char* end) { |
kushi.p@gmail.com | e486977 | 2011-04-22 22:13:07 +0900 | [diff] [blame] | 322 | DCHECK_EQ(header_size, AlignInt(header_size, sizeof(uint32))); |
| 323 | DCHECK_LE(header_size, static_cast<size_t>(kPayloadUnit)); |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 324 | |
halyavin@google.com | 893e5bb | 2013-11-01 18:06:26 +0900 | [diff] [blame] | 325 | size_t length = static_cast<size_t>(end - start); |
| 326 | if (length < sizeof(Header)) |
glider@chromium.org | 8b725fa | 2011-01-26 22:02:27 +0900 | [diff] [blame] | 327 | return NULL; |
| 328 | |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 329 | const Header* hdr = reinterpret_cast<const Header*>(start); |
halyavin@google.com | 893e5bb | 2013-11-01 18:06:26 +0900 | [diff] [blame] | 330 | if (length < header_size || length - header_size < hdr->payload_size) |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 331 | return NULL; |
halyavin@google.com | 893e5bb | 2013-11-01 18:06:26 +0900 | [diff] [blame] | 332 | return start + header_size + hdr->payload_size; |
initial.commit | 3f4a732 | 2008-07-27 06:49:38 +0900 | [diff] [blame] | 333 | } |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 334 | |
| 335 | template <size_t length> void Pickle::WriteBytesStatic(const void* data) { |
| 336 | WriteBytesCommon(data, length); |
| 337 | } |
| 338 | |
| 339 | template void Pickle::WriteBytesStatic<2>(const void* data); |
| 340 | template void Pickle::WriteBytesStatic<4>(const void* data); |
| 341 | template void Pickle::WriteBytesStatic<8>(const void* data); |
| 342 | |
| 343 | inline void Pickle::WriteBytesCommon(const void* data, size_t length) { |
| 344 | DCHECK_NE(kCapacityReadOnly, capacity_after_header_) |
| 345 | << "oops: pickle is readonly"; |
| 346 | size_t data_len = AlignInt(length, sizeof(uint32)); |
| 347 | DCHECK_GE(data_len, length); |
| 348 | #ifdef ARCH_CPU_64_BITS |
| 349 | DCHECK_LE(data_len, kuint32max); |
| 350 | #endif |
| 351 | DCHECK_LE(write_offset_, kuint32max - data_len); |
| 352 | size_t new_size = write_offset_ + data_len; |
| 353 | if (new_size > capacity_after_header_) { |
| 354 | Resize(std::max(capacity_after_header_ * 2, new_size)); |
| 355 | } |
| 356 | |
| 357 | char* write = mutable_payload() + write_offset_; |
| 358 | memcpy(write, data, length); |
| 359 | memset(write + length, 0, data_len - length); |
halyavin@google.com | 0398c72 | 2014-06-03 08:23:49 +0900 | [diff] [blame] | 360 | header_->payload_size = static_cast<uint32>(new_size); |
piman@chromium.org | 5d3eee2 | 2013-10-31 13:03:02 +0900 | [diff] [blame] | 361 | write_offset_ = new_size; |
| 362 | } |