henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 1 | /* |
| 2 | * libjingle |
| 3 | * Copyright 2004 Google Inc. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| 9 | * this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * 3. The name of the author may not be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| 19 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 20 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #if defined(POSIX) |
| 29 | #include <sys/file.h> |
| 30 | #endif // POSIX |
| 31 | #include <sys/types.h> |
| 32 | #include <sys/stat.h> |
| 33 | #include <errno.h> |
| 34 | #include <string> |
| 35 | #include "talk/base/basictypes.h" |
| 36 | #include "talk/base/common.h" |
| 37 | #include "talk/base/logging.h" |
| 38 | #include "talk/base/messagequeue.h" |
| 39 | #include "talk/base/stream.h" |
| 40 | #include "talk/base/stringencode.h" |
| 41 | #include "talk/base/stringutils.h" |
| 42 | #include "talk/base/thread.h" |
| 43 | #include "talk/base/timeutils.h" |
| 44 | |
| 45 | #ifdef WIN32 |
| 46 | #include "talk/base/win32.h" |
| 47 | #define fileno _fileno |
| 48 | #endif |
| 49 | |
| 50 | namespace talk_base { |
| 51 | |
| 52 | /////////////////////////////////////////////////////////////////////////////// |
| 53 | // StreamInterface |
| 54 | /////////////////////////////////////////////////////////////////////////////// |
| 55 | StreamInterface::~StreamInterface() { |
| 56 | } |
| 57 | |
| 58 | StreamResult StreamInterface::WriteAll(const void* data, size_t data_len, |
| 59 | size_t* written, int* error) { |
| 60 | StreamResult result = SR_SUCCESS; |
| 61 | size_t total_written = 0, current_written; |
| 62 | while (total_written < data_len) { |
| 63 | result = Write(static_cast<const char*>(data) + total_written, |
| 64 | data_len - total_written, ¤t_written, error); |
| 65 | if (result != SR_SUCCESS) |
| 66 | break; |
| 67 | total_written += current_written; |
| 68 | } |
| 69 | if (written) |
| 70 | *written = total_written; |
| 71 | return result; |
| 72 | } |
| 73 | |
| 74 | StreamResult StreamInterface::ReadAll(void* buffer, size_t buffer_len, |
| 75 | size_t* read, int* error) { |
| 76 | StreamResult result = SR_SUCCESS; |
| 77 | size_t total_read = 0, current_read; |
| 78 | while (total_read < buffer_len) { |
| 79 | result = Read(static_cast<char*>(buffer) + total_read, |
| 80 | buffer_len - total_read, ¤t_read, error); |
| 81 | if (result != SR_SUCCESS) |
| 82 | break; |
| 83 | total_read += current_read; |
| 84 | } |
| 85 | if (read) |
| 86 | *read = total_read; |
| 87 | return result; |
| 88 | } |
| 89 | |
| 90 | StreamResult StreamInterface::ReadLine(std::string* line) { |
| 91 | line->clear(); |
| 92 | StreamResult result = SR_SUCCESS; |
| 93 | while (true) { |
| 94 | char ch; |
| 95 | result = Read(&ch, sizeof(ch), NULL, NULL); |
| 96 | if (result != SR_SUCCESS) { |
| 97 | break; |
| 98 | } |
| 99 | if (ch == '\n') { |
| 100 | break; |
| 101 | } |
| 102 | line->push_back(ch); |
| 103 | } |
| 104 | if (!line->empty()) { // give back the line we've collected so far with |
| 105 | result = SR_SUCCESS; // a success code. Otherwise return the last code |
| 106 | } |
| 107 | return result; |
| 108 | } |
| 109 | |
| 110 | void StreamInterface::PostEvent(Thread* t, int events, int err) { |
| 111 | t->Post(this, MSG_POST_EVENT, new StreamEventData(events, err)); |
| 112 | } |
| 113 | |
| 114 | void StreamInterface::PostEvent(int events, int err) { |
| 115 | PostEvent(Thread::Current(), events, err); |
| 116 | } |
| 117 | |
| 118 | StreamInterface::StreamInterface() { |
| 119 | } |
| 120 | |
| 121 | void StreamInterface::OnMessage(Message* msg) { |
| 122 | if (MSG_POST_EVENT == msg->message_id) { |
| 123 | StreamEventData* pe = static_cast<StreamEventData*>(msg->pdata); |
| 124 | SignalEvent(this, pe->events, pe->error); |
| 125 | delete msg->pdata; |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | /////////////////////////////////////////////////////////////////////////////// |
| 130 | // StreamAdapterInterface |
| 131 | /////////////////////////////////////////////////////////////////////////////// |
| 132 | |
| 133 | StreamAdapterInterface::StreamAdapterInterface(StreamInterface* stream, |
| 134 | bool owned) |
| 135 | : stream_(stream), owned_(owned) { |
| 136 | if (NULL != stream_) |
| 137 | stream_->SignalEvent.connect(this, &StreamAdapterInterface::OnEvent); |
| 138 | } |
| 139 | |
| 140 | void StreamAdapterInterface::Attach(StreamInterface* stream, bool owned) { |
| 141 | if (NULL != stream_) |
| 142 | stream_->SignalEvent.disconnect(this); |
| 143 | if (owned_) |
| 144 | delete stream_; |
| 145 | stream_ = stream; |
| 146 | owned_ = owned; |
| 147 | if (NULL != stream_) |
| 148 | stream_->SignalEvent.connect(this, &StreamAdapterInterface::OnEvent); |
| 149 | } |
| 150 | |
| 151 | StreamInterface* StreamAdapterInterface::Detach() { |
| 152 | if (NULL != stream_) |
| 153 | stream_->SignalEvent.disconnect(this); |
| 154 | StreamInterface* stream = stream_; |
| 155 | stream_ = NULL; |
| 156 | return stream; |
| 157 | } |
| 158 | |
| 159 | StreamAdapterInterface::~StreamAdapterInterface() { |
| 160 | if (owned_) |
| 161 | delete stream_; |
| 162 | } |
| 163 | |
| 164 | /////////////////////////////////////////////////////////////////////////////// |
| 165 | // StreamTap |
| 166 | /////////////////////////////////////////////////////////////////////////////// |
| 167 | |
| 168 | StreamTap::StreamTap(StreamInterface* stream, StreamInterface* tap) |
wu@webrtc.org | 5c9dd59 | 2013-10-25 21:18:33 +0000 | [diff] [blame] | 169 | : StreamAdapterInterface(stream), tap_(), tap_result_(SR_SUCCESS), |
henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 170 | tap_error_(0) { |
| 171 | AttachTap(tap); |
| 172 | } |
| 173 | |
| 174 | void StreamTap::AttachTap(StreamInterface* tap) { |
| 175 | tap_.reset(tap); |
| 176 | } |
| 177 | |
| 178 | StreamInterface* StreamTap::DetachTap() { |
| 179 | return tap_.release(); |
| 180 | } |
| 181 | |
| 182 | StreamResult StreamTap::GetTapResult(int* error) { |
| 183 | if (error) { |
| 184 | *error = tap_error_; |
| 185 | } |
| 186 | return tap_result_; |
| 187 | } |
| 188 | |
| 189 | StreamResult StreamTap::Read(void* buffer, size_t buffer_len, |
| 190 | size_t* read, int* error) { |
| 191 | size_t backup_read; |
| 192 | if (!read) { |
| 193 | read = &backup_read; |
| 194 | } |
| 195 | StreamResult res = StreamAdapterInterface::Read(buffer, buffer_len, |
| 196 | read, error); |
| 197 | if ((res == SR_SUCCESS) && (tap_result_ == SR_SUCCESS)) { |
| 198 | tap_result_ = tap_->WriteAll(buffer, *read, NULL, &tap_error_); |
| 199 | } |
| 200 | return res; |
| 201 | } |
| 202 | |
| 203 | StreamResult StreamTap::Write(const void* data, size_t data_len, |
| 204 | size_t* written, int* error) { |
| 205 | size_t backup_written; |
| 206 | if (!written) { |
| 207 | written = &backup_written; |
| 208 | } |
| 209 | StreamResult res = StreamAdapterInterface::Write(data, data_len, |
| 210 | written, error); |
| 211 | if ((res == SR_SUCCESS) && (tap_result_ == SR_SUCCESS)) { |
| 212 | tap_result_ = tap_->WriteAll(data, *written, NULL, &tap_error_); |
| 213 | } |
| 214 | return res; |
| 215 | } |
| 216 | |
| 217 | /////////////////////////////////////////////////////////////////////////////// |
| 218 | // StreamSegment |
| 219 | /////////////////////////////////////////////////////////////////////////////// |
| 220 | |
| 221 | StreamSegment::StreamSegment(StreamInterface* stream) |
| 222 | : StreamAdapterInterface(stream), start_(SIZE_UNKNOWN), pos_(0), |
| 223 | length_(SIZE_UNKNOWN) { |
| 224 | // It's ok for this to fail, in which case start_ is left as SIZE_UNKNOWN. |
| 225 | stream->GetPosition(&start_); |
| 226 | } |
| 227 | |
| 228 | StreamSegment::StreamSegment(StreamInterface* stream, size_t length) |
| 229 | : StreamAdapterInterface(stream), start_(SIZE_UNKNOWN), pos_(0), |
| 230 | length_(length) { |
| 231 | // It's ok for this to fail, in which case start_ is left as SIZE_UNKNOWN. |
| 232 | stream->GetPosition(&start_); |
| 233 | } |
| 234 | |
| 235 | StreamResult StreamSegment::Read(void* buffer, size_t buffer_len, |
| 236 | size_t* read, int* error) { |
| 237 | if (SIZE_UNKNOWN != length_) { |
| 238 | if (pos_ >= length_) |
| 239 | return SR_EOS; |
| 240 | buffer_len = _min(buffer_len, length_ - pos_); |
| 241 | } |
| 242 | size_t backup_read; |
| 243 | if (!read) { |
| 244 | read = &backup_read; |
| 245 | } |
| 246 | StreamResult result = StreamAdapterInterface::Read(buffer, buffer_len, |
| 247 | read, error); |
| 248 | if (SR_SUCCESS == result) { |
| 249 | pos_ += *read; |
| 250 | } |
| 251 | return result; |
| 252 | } |
| 253 | |
| 254 | bool StreamSegment::SetPosition(size_t position) { |
| 255 | if (SIZE_UNKNOWN == start_) |
| 256 | return false; // Not seekable |
| 257 | if ((SIZE_UNKNOWN != length_) && (position > length_)) |
| 258 | return false; // Seek past end of segment |
| 259 | if (!StreamAdapterInterface::SetPosition(start_ + position)) |
| 260 | return false; |
| 261 | pos_ = position; |
| 262 | return true; |
| 263 | } |
| 264 | |
| 265 | bool StreamSegment::GetPosition(size_t* position) const { |
| 266 | if (SIZE_UNKNOWN == start_) |
| 267 | return false; // Not seekable |
| 268 | if (!StreamAdapterInterface::GetPosition(position)) |
| 269 | return false; |
| 270 | if (position) { |
| 271 | ASSERT(*position >= start_); |
| 272 | *position -= start_; |
| 273 | } |
| 274 | return true; |
| 275 | } |
| 276 | |
| 277 | bool StreamSegment::GetSize(size_t* size) const { |
| 278 | if (!StreamAdapterInterface::GetSize(size)) |
| 279 | return false; |
| 280 | if (size) { |
| 281 | if (SIZE_UNKNOWN != start_) { |
| 282 | ASSERT(*size >= start_); |
| 283 | *size -= start_; |
| 284 | } |
| 285 | if (SIZE_UNKNOWN != length_) { |
| 286 | *size = _min(*size, length_); |
| 287 | } |
| 288 | } |
| 289 | return true; |
| 290 | } |
| 291 | |
| 292 | bool StreamSegment::GetAvailable(size_t* size) const { |
| 293 | if (!StreamAdapterInterface::GetAvailable(size)) |
| 294 | return false; |
| 295 | if (size && (SIZE_UNKNOWN != length_)) |
| 296 | *size = _min(*size, length_ - pos_); |
| 297 | return true; |
| 298 | } |
| 299 | |
| 300 | /////////////////////////////////////////////////////////////////////////////// |
| 301 | // NullStream |
| 302 | /////////////////////////////////////////////////////////////////////////////// |
| 303 | |
| 304 | NullStream::NullStream() { |
| 305 | } |
| 306 | |
| 307 | NullStream::~NullStream() { |
| 308 | } |
| 309 | |
| 310 | StreamState NullStream::GetState() const { |
| 311 | return SS_OPEN; |
| 312 | } |
| 313 | |
| 314 | StreamResult NullStream::Read(void* buffer, size_t buffer_len, |
| 315 | size_t* read, int* error) { |
| 316 | if (error) *error = -1; |
| 317 | return SR_ERROR; |
| 318 | } |
| 319 | |
| 320 | StreamResult NullStream::Write(const void* data, size_t data_len, |
| 321 | size_t* written, int* error) { |
| 322 | if (written) *written = data_len; |
| 323 | return SR_SUCCESS; |
| 324 | } |
| 325 | |
| 326 | void NullStream::Close() { |
| 327 | } |
| 328 | |
| 329 | /////////////////////////////////////////////////////////////////////////////// |
| 330 | // FileStream |
| 331 | /////////////////////////////////////////////////////////////////////////////// |
| 332 | |
| 333 | FileStream::FileStream() : file_(NULL) { |
| 334 | } |
| 335 | |
| 336 | FileStream::~FileStream() { |
| 337 | FileStream::Close(); |
| 338 | } |
| 339 | |
| 340 | bool FileStream::Open(const std::string& filename, const char* mode, |
| 341 | int* error) { |
| 342 | Close(); |
| 343 | #ifdef WIN32 |
| 344 | std::wstring wfilename; |
| 345 | if (Utf8ToWindowsFilename(filename, &wfilename)) { |
| 346 | file_ = _wfopen(wfilename.c_str(), ToUtf16(mode).c_str()); |
| 347 | } else { |
| 348 | if (error) { |
| 349 | *error = -1; |
| 350 | return false; |
| 351 | } |
| 352 | } |
| 353 | #else |
| 354 | file_ = fopen(filename.c_str(), mode); |
| 355 | #endif |
| 356 | if (!file_ && error) { |
| 357 | *error = errno; |
| 358 | } |
| 359 | return (file_ != NULL); |
| 360 | } |
| 361 | |
| 362 | bool FileStream::OpenShare(const std::string& filename, const char* mode, |
| 363 | int shflag, int* error) { |
| 364 | Close(); |
| 365 | #ifdef WIN32 |
| 366 | std::wstring wfilename; |
| 367 | if (Utf8ToWindowsFilename(filename, &wfilename)) { |
| 368 | file_ = _wfsopen(wfilename.c_str(), ToUtf16(mode).c_str(), shflag); |
| 369 | if (!file_ && error) { |
| 370 | *error = errno; |
| 371 | return false; |
| 372 | } |
| 373 | return file_ != NULL; |
| 374 | } else { |
| 375 | if (error) { |
| 376 | *error = -1; |
| 377 | } |
| 378 | return false; |
| 379 | } |
| 380 | #else |
| 381 | return Open(filename, mode, error); |
| 382 | #endif |
| 383 | } |
| 384 | |
| 385 | bool FileStream::DisableBuffering() { |
| 386 | if (!file_) |
| 387 | return false; |
| 388 | return (setvbuf(file_, NULL, _IONBF, 0) == 0); |
| 389 | } |
| 390 | |
| 391 | StreamState FileStream::GetState() const { |
| 392 | return (file_ == NULL) ? SS_CLOSED : SS_OPEN; |
| 393 | } |
| 394 | |
| 395 | StreamResult FileStream::Read(void* buffer, size_t buffer_len, |
| 396 | size_t* read, int* error) { |
| 397 | if (!file_) |
| 398 | return SR_EOS; |
| 399 | size_t result = fread(buffer, 1, buffer_len, file_); |
| 400 | if ((result == 0) && (buffer_len > 0)) { |
| 401 | if (feof(file_)) |
| 402 | return SR_EOS; |
| 403 | if (error) |
| 404 | *error = errno; |
| 405 | return SR_ERROR; |
| 406 | } |
| 407 | if (read) |
| 408 | *read = result; |
| 409 | return SR_SUCCESS; |
| 410 | } |
| 411 | |
| 412 | StreamResult FileStream::Write(const void* data, size_t data_len, |
| 413 | size_t* written, int* error) { |
| 414 | if (!file_) |
| 415 | return SR_EOS; |
| 416 | size_t result = fwrite(data, 1, data_len, file_); |
| 417 | if ((result == 0) && (data_len > 0)) { |
| 418 | if (error) |
| 419 | *error = errno; |
| 420 | return SR_ERROR; |
| 421 | } |
| 422 | if (written) |
| 423 | *written = result; |
| 424 | return SR_SUCCESS; |
| 425 | } |
| 426 | |
| 427 | void FileStream::Close() { |
| 428 | if (file_) { |
| 429 | DoClose(); |
| 430 | file_ = NULL; |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | bool FileStream::SetPosition(size_t position) { |
| 435 | if (!file_) |
| 436 | return false; |
| 437 | return (fseek(file_, static_cast<int>(position), SEEK_SET) == 0); |
| 438 | } |
| 439 | |
| 440 | bool FileStream::GetPosition(size_t* position) const { |
| 441 | ASSERT(NULL != position); |
| 442 | if (!file_) |
| 443 | return false; |
| 444 | long result = ftell(file_); |
| 445 | if (result < 0) |
| 446 | return false; |
| 447 | if (position) |
| 448 | *position = result; |
| 449 | return true; |
| 450 | } |
| 451 | |
| 452 | bool FileStream::GetSize(size_t* size) const { |
| 453 | ASSERT(NULL != size); |
| 454 | if (!file_) |
| 455 | return false; |
| 456 | struct stat file_stats; |
| 457 | if (fstat(fileno(file_), &file_stats) != 0) |
| 458 | return false; |
| 459 | if (size) |
| 460 | *size = file_stats.st_size; |
| 461 | return true; |
| 462 | } |
| 463 | |
| 464 | bool FileStream::GetAvailable(size_t* size) const { |
| 465 | ASSERT(NULL != size); |
| 466 | if (!GetSize(size)) |
| 467 | return false; |
| 468 | long result = ftell(file_); |
| 469 | if (result < 0) |
| 470 | return false; |
| 471 | if (size) |
| 472 | *size -= result; |
| 473 | return true; |
| 474 | } |
| 475 | |
| 476 | bool FileStream::ReserveSize(size_t size) { |
| 477 | // TODO: extend the file to the proper length |
| 478 | return true; |
| 479 | } |
| 480 | |
| 481 | bool FileStream::GetSize(const std::string& filename, size_t* size) { |
| 482 | struct stat file_stats; |
| 483 | if (stat(filename.c_str(), &file_stats) != 0) |
| 484 | return false; |
| 485 | *size = file_stats.st_size; |
| 486 | return true; |
| 487 | } |
| 488 | |
| 489 | bool FileStream::Flush() { |
| 490 | if (file_) { |
| 491 | return (0 == fflush(file_)); |
| 492 | } |
| 493 | // try to flush empty file? |
| 494 | ASSERT(false); |
| 495 | return false; |
| 496 | } |
| 497 | |
wu@webrtc.org | 2a81a38 | 2014-01-03 22:08:47 +0000 | [diff] [blame] | 498 | #if defined(POSIX) && !defined(__native_client__) |
henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 499 | |
| 500 | bool FileStream::TryLock() { |
| 501 | if (file_ == NULL) { |
| 502 | // Stream not open. |
| 503 | ASSERT(false); |
| 504 | return false; |
| 505 | } |
| 506 | |
| 507 | return flock(fileno(file_), LOCK_EX|LOCK_NB) == 0; |
| 508 | } |
| 509 | |
| 510 | bool FileStream::Unlock() { |
| 511 | if (file_ == NULL) { |
| 512 | // Stream not open. |
| 513 | ASSERT(false); |
| 514 | return false; |
| 515 | } |
| 516 | |
| 517 | return flock(fileno(file_), LOCK_UN) == 0; |
| 518 | } |
| 519 | |
| 520 | #endif |
| 521 | |
| 522 | void FileStream::DoClose() { |
| 523 | fclose(file_); |
| 524 | } |
| 525 | |
wu@webrtc.org | 861d073 | 2013-10-07 23:32:02 +0000 | [diff] [blame] | 526 | CircularFileStream::CircularFileStream(size_t max_size) |
| 527 | : max_write_size_(max_size), |
| 528 | position_(0), |
| 529 | marked_position_(max_size / 2), |
| 530 | last_write_position_(0), |
| 531 | read_segment_(READ_LATEST), |
| 532 | read_segment_available_(0) { |
| 533 | } |
| 534 | |
| 535 | bool CircularFileStream::Open( |
| 536 | const std::string& filename, const char* mode, int* error) { |
| 537 | if (!FileStream::Open(filename.c_str(), mode, error)) |
| 538 | return false; |
| 539 | |
| 540 | if (strchr(mode, "r") != NULL) { // Opened in read mode. |
| 541 | // Check if the buffer has been overwritten and determine how to read the |
| 542 | // log in time sequence. |
| 543 | size_t file_size; |
| 544 | GetSize(&file_size); |
| 545 | if (file_size == position_) { |
| 546 | // The buffer has not been overwritten yet. Read 0 .. file_size |
| 547 | read_segment_ = READ_LATEST; |
| 548 | read_segment_available_ = file_size; |
| 549 | } else { |
| 550 | // The buffer has been over written. There are three segments: The first |
| 551 | // one is 0 .. marked_position_, which is the marked earliest log. The |
| 552 | // second one is position_ .. file_size, which is the middle log. The |
| 553 | // last one is marked_position_ .. position_, which is the latest log. |
| 554 | read_segment_ = READ_MARKED; |
| 555 | read_segment_available_ = marked_position_; |
| 556 | last_write_position_ = position_; |
| 557 | } |
| 558 | |
| 559 | // Read from the beginning. |
| 560 | position_ = 0; |
| 561 | SetPosition(position_); |
| 562 | } |
| 563 | |
| 564 | return true; |
| 565 | } |
| 566 | |
| 567 | StreamResult CircularFileStream::Read(void* buffer, size_t buffer_len, |
| 568 | size_t* read, int* error) { |
| 569 | if (read_segment_available_ == 0) { |
| 570 | size_t file_size; |
| 571 | switch (read_segment_) { |
| 572 | case READ_MARKED: // Finished READ_MARKED and start READ_MIDDLE. |
| 573 | read_segment_ = READ_MIDDLE; |
| 574 | position_ = last_write_position_; |
| 575 | SetPosition(position_); |
| 576 | GetSize(&file_size); |
| 577 | read_segment_available_ = file_size - position_; |
| 578 | break; |
| 579 | |
| 580 | case READ_MIDDLE: // Finished READ_MIDDLE and start READ_LATEST. |
| 581 | read_segment_ = READ_LATEST; |
| 582 | position_ = marked_position_; |
| 583 | SetPosition(position_); |
| 584 | read_segment_available_ = last_write_position_ - position_; |
| 585 | break; |
| 586 | |
| 587 | default: // Finished READ_LATEST and return EOS. |
| 588 | return talk_base::SR_EOS; |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | size_t local_read; |
| 593 | if (!read) read = &local_read; |
| 594 | |
| 595 | size_t to_read = talk_base::_min(buffer_len, read_segment_available_); |
| 596 | talk_base::StreamResult result |
| 597 | = talk_base::FileStream::Read(buffer, to_read, read, error); |
| 598 | if (result == talk_base::SR_SUCCESS) { |
| 599 | read_segment_available_ -= *read; |
| 600 | position_ += *read; |
| 601 | } |
| 602 | return result; |
| 603 | } |
| 604 | |
| 605 | StreamResult CircularFileStream::Write(const void* data, size_t data_len, |
| 606 | size_t* written, int* error) { |
| 607 | if (position_ >= max_write_size_) { |
| 608 | ASSERT(position_ == max_write_size_); |
| 609 | position_ = marked_position_; |
| 610 | SetPosition(position_); |
| 611 | } |
| 612 | |
| 613 | size_t local_written; |
| 614 | if (!written) written = &local_written; |
| 615 | |
| 616 | size_t to_eof = max_write_size_ - position_; |
| 617 | size_t to_write = talk_base::_min(data_len, to_eof); |
| 618 | talk_base::StreamResult result |
| 619 | = talk_base::FileStream::Write(data, to_write, written, error); |
| 620 | if (result == talk_base::SR_SUCCESS) { |
| 621 | position_ += *written; |
| 622 | } |
| 623 | return result; |
| 624 | } |
| 625 | |
henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 626 | AsyncWriteStream::~AsyncWriteStream() { |
| 627 | write_thread_->Clear(this, 0, NULL); |
| 628 | ClearBufferAndWrite(); |
| 629 | |
| 630 | CritScope cs(&crit_stream_); |
| 631 | stream_.reset(); |
| 632 | } |
| 633 | |
| 634 | // This is needed by some stream writers, such as RtpDumpWriter. |
| 635 | bool AsyncWriteStream::GetPosition(size_t* position) const { |
| 636 | CritScope cs(&crit_stream_); |
| 637 | return stream_->GetPosition(position); |
| 638 | } |
| 639 | |
| 640 | // This is needed by some stream writers, such as the plugin log writers. |
| 641 | StreamResult AsyncWriteStream::Read(void* buffer, size_t buffer_len, |
| 642 | size_t* read, int* error) { |
| 643 | CritScope cs(&crit_stream_); |
| 644 | return stream_->Read(buffer, buffer_len, read, error); |
| 645 | } |
| 646 | |
| 647 | void AsyncWriteStream::Close() { |
| 648 | if (state_ == SS_CLOSED) { |
| 649 | return; |
| 650 | } |
| 651 | |
| 652 | write_thread_->Clear(this, 0, NULL); |
| 653 | ClearBufferAndWrite(); |
| 654 | |
| 655 | CritScope cs(&crit_stream_); |
| 656 | stream_->Close(); |
| 657 | state_ = SS_CLOSED; |
| 658 | } |
| 659 | |
| 660 | StreamResult AsyncWriteStream::Write(const void* data, size_t data_len, |
| 661 | size_t* written, int* error) { |
| 662 | if (state_ == SS_CLOSED) { |
| 663 | return SR_ERROR; |
| 664 | } |
| 665 | |
| 666 | size_t previous_buffer_length = 0; |
| 667 | { |
| 668 | CritScope cs(&crit_buffer_); |
| 669 | previous_buffer_length = buffer_.length(); |
| 670 | buffer_.AppendData(data, data_len); |
| 671 | } |
| 672 | |
| 673 | if (previous_buffer_length == 0) { |
| 674 | // If there's stuff already in the buffer, then we already called |
| 675 | // Post and the write_thread_ hasn't pulled it out yet, so we |
| 676 | // don't need to re-Post. |
| 677 | write_thread_->Post(this, 0, NULL); |
| 678 | } |
| 679 | // Return immediately, assuming that it works. |
| 680 | if (written) { |
| 681 | *written = data_len; |
| 682 | } |
| 683 | return SR_SUCCESS; |
| 684 | } |
| 685 | |
| 686 | void AsyncWriteStream::OnMessage(talk_base::Message* pmsg) { |
| 687 | ClearBufferAndWrite(); |
| 688 | } |
| 689 | |
| 690 | bool AsyncWriteStream::Flush() { |
| 691 | if (state_ == SS_CLOSED) { |
| 692 | return false; |
| 693 | } |
| 694 | |
| 695 | ClearBufferAndWrite(); |
| 696 | |
| 697 | CritScope cs(&crit_stream_); |
| 698 | return stream_->Flush(); |
| 699 | } |
| 700 | |
| 701 | void AsyncWriteStream::ClearBufferAndWrite() { |
| 702 | Buffer to_write; |
| 703 | { |
| 704 | CritScope cs_buffer(&crit_buffer_); |
| 705 | buffer_.TransferTo(&to_write); |
| 706 | } |
| 707 | |
| 708 | if (to_write.length() > 0) { |
| 709 | CritScope cs(&crit_stream_); |
| 710 | stream_->WriteAll(to_write.data(), to_write.length(), NULL, NULL); |
| 711 | } |
| 712 | } |
| 713 | |
henrika@webrtc.org | 8485ec6 | 2014-01-14 10:00:58 +0000 | [diff] [blame] | 714 | #if defined(POSIX) && !defined(__native_client__) |
henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 715 | |
| 716 | // Have to identically rewrite the FileStream destructor or else it would call |
| 717 | // the base class's Close() instead of the sub-class's. |
| 718 | POpenStream::~POpenStream() { |
| 719 | POpenStream::Close(); |
| 720 | } |
| 721 | |
| 722 | bool POpenStream::Open(const std::string& subcommand, |
| 723 | const char* mode, |
| 724 | int* error) { |
| 725 | Close(); |
| 726 | file_ = popen(subcommand.c_str(), mode); |
| 727 | if (file_ == NULL) { |
| 728 | if (error) |
| 729 | *error = errno; |
| 730 | return false; |
| 731 | } |
| 732 | return true; |
| 733 | } |
| 734 | |
| 735 | bool POpenStream::OpenShare(const std::string& subcommand, const char* mode, |
| 736 | int shflag, int* error) { |
| 737 | return Open(subcommand, mode, error); |
| 738 | } |
| 739 | |
| 740 | void POpenStream::DoClose() { |
| 741 | wait_status_ = pclose(file_); |
| 742 | } |
| 743 | |
| 744 | #endif |
| 745 | |
| 746 | /////////////////////////////////////////////////////////////////////////////// |
| 747 | // MemoryStream |
| 748 | /////////////////////////////////////////////////////////////////////////////// |
| 749 | |
| 750 | MemoryStreamBase::MemoryStreamBase() |
| 751 | : buffer_(NULL), buffer_length_(0), data_length_(0), |
| 752 | seek_position_(0) { |
| 753 | } |
| 754 | |
| 755 | StreamState MemoryStreamBase::GetState() const { |
| 756 | return SS_OPEN; |
| 757 | } |
| 758 | |
| 759 | StreamResult MemoryStreamBase::Read(void* buffer, size_t bytes, |
| 760 | size_t* bytes_read, int* error) { |
| 761 | if (seek_position_ >= data_length_) { |
| 762 | return SR_EOS; |
| 763 | } |
| 764 | size_t available = data_length_ - seek_position_; |
| 765 | if (bytes > available) { |
| 766 | // Read partial buffer |
| 767 | bytes = available; |
| 768 | } |
| 769 | memcpy(buffer, &buffer_[seek_position_], bytes); |
| 770 | seek_position_ += bytes; |
| 771 | if (bytes_read) { |
| 772 | *bytes_read = bytes; |
| 773 | } |
| 774 | return SR_SUCCESS; |
| 775 | } |
| 776 | |
| 777 | StreamResult MemoryStreamBase::Write(const void* buffer, size_t bytes, |
| 778 | size_t* bytes_written, int* error) { |
| 779 | size_t available = buffer_length_ - seek_position_; |
| 780 | if (0 == available) { |
| 781 | // Increase buffer size to the larger of: |
| 782 | // a) new position rounded up to next 256 bytes |
| 783 | // b) double the previous length |
| 784 | size_t new_buffer_length = _max(((seek_position_ + bytes) | 0xFF) + 1, |
| 785 | buffer_length_ * 2); |
| 786 | StreamResult result = DoReserve(new_buffer_length, error); |
| 787 | if (SR_SUCCESS != result) { |
| 788 | return result; |
| 789 | } |
| 790 | ASSERT(buffer_length_ >= new_buffer_length); |
| 791 | available = buffer_length_ - seek_position_; |
| 792 | } |
| 793 | |
| 794 | if (bytes > available) { |
| 795 | bytes = available; |
| 796 | } |
| 797 | memcpy(&buffer_[seek_position_], buffer, bytes); |
| 798 | seek_position_ += bytes; |
| 799 | if (data_length_ < seek_position_) { |
| 800 | data_length_ = seek_position_; |
| 801 | } |
| 802 | if (bytes_written) { |
| 803 | *bytes_written = bytes; |
| 804 | } |
| 805 | return SR_SUCCESS; |
| 806 | } |
| 807 | |
| 808 | void MemoryStreamBase::Close() { |
| 809 | // nothing to do |
| 810 | } |
| 811 | |
| 812 | bool MemoryStreamBase::SetPosition(size_t position) { |
| 813 | if (position > data_length_) |
| 814 | return false; |
| 815 | seek_position_ = position; |
| 816 | return true; |
| 817 | } |
| 818 | |
| 819 | bool MemoryStreamBase::GetPosition(size_t* position) const { |
| 820 | if (position) |
| 821 | *position = seek_position_; |
| 822 | return true; |
| 823 | } |
| 824 | |
| 825 | bool MemoryStreamBase::GetSize(size_t* size) const { |
| 826 | if (size) |
| 827 | *size = data_length_; |
| 828 | return true; |
| 829 | } |
| 830 | |
| 831 | bool MemoryStreamBase::GetAvailable(size_t* size) const { |
| 832 | if (size) |
| 833 | *size = data_length_ - seek_position_; |
| 834 | return true; |
| 835 | } |
| 836 | |
| 837 | bool MemoryStreamBase::ReserveSize(size_t size) { |
| 838 | return (SR_SUCCESS == DoReserve(size, NULL)); |
| 839 | } |
| 840 | |
| 841 | StreamResult MemoryStreamBase::DoReserve(size_t size, int* error) { |
| 842 | return (buffer_length_ >= size) ? SR_SUCCESS : SR_EOS; |
| 843 | } |
| 844 | |
| 845 | /////////////////////////////////////////////////////////////////////////////// |
| 846 | |
| 847 | MemoryStream::MemoryStream() |
| 848 | : buffer_alloc_(NULL) { |
| 849 | } |
| 850 | |
| 851 | MemoryStream::MemoryStream(const char* data) |
| 852 | : buffer_alloc_(NULL) { |
| 853 | SetData(data, strlen(data)); |
| 854 | } |
| 855 | |
| 856 | MemoryStream::MemoryStream(const void* data, size_t length) |
| 857 | : buffer_alloc_(NULL) { |
| 858 | SetData(data, length); |
| 859 | } |
| 860 | |
| 861 | MemoryStream::~MemoryStream() { |
| 862 | delete [] buffer_alloc_; |
| 863 | } |
| 864 | |
| 865 | void MemoryStream::SetData(const void* data, size_t length) { |
| 866 | data_length_ = buffer_length_ = length; |
| 867 | delete [] buffer_alloc_; |
| 868 | buffer_alloc_ = new char[buffer_length_ + kAlignment]; |
| 869 | buffer_ = reinterpret_cast<char*>(ALIGNP(buffer_alloc_, kAlignment)); |
| 870 | memcpy(buffer_, data, data_length_); |
| 871 | seek_position_ = 0; |
| 872 | } |
| 873 | |
| 874 | StreamResult MemoryStream::DoReserve(size_t size, int* error) { |
| 875 | if (buffer_length_ >= size) |
| 876 | return SR_SUCCESS; |
| 877 | |
| 878 | if (char* new_buffer_alloc = new char[size + kAlignment]) { |
| 879 | char* new_buffer = reinterpret_cast<char*>( |
| 880 | ALIGNP(new_buffer_alloc, kAlignment)); |
| 881 | memcpy(new_buffer, buffer_, data_length_); |
| 882 | delete [] buffer_alloc_; |
| 883 | buffer_alloc_ = new_buffer_alloc; |
| 884 | buffer_ = new_buffer; |
| 885 | buffer_length_ = size; |
| 886 | return SR_SUCCESS; |
| 887 | } |
| 888 | |
| 889 | if (error) { |
| 890 | *error = ENOMEM; |
| 891 | } |
| 892 | return SR_ERROR; |
| 893 | } |
| 894 | |
| 895 | /////////////////////////////////////////////////////////////////////////////// |
| 896 | |
| 897 | ExternalMemoryStream::ExternalMemoryStream() { |
| 898 | } |
| 899 | |
| 900 | ExternalMemoryStream::ExternalMemoryStream(void* data, size_t length) { |
| 901 | SetData(data, length); |
| 902 | } |
| 903 | |
| 904 | ExternalMemoryStream::~ExternalMemoryStream() { |
| 905 | } |
| 906 | |
| 907 | void ExternalMemoryStream::SetData(void* data, size_t length) { |
| 908 | data_length_ = buffer_length_ = length; |
| 909 | buffer_ = static_cast<char*>(data); |
| 910 | seek_position_ = 0; |
| 911 | } |
| 912 | |
| 913 | /////////////////////////////////////////////////////////////////////////////// |
| 914 | // FifoBuffer |
| 915 | /////////////////////////////////////////////////////////////////////////////// |
| 916 | |
| 917 | FifoBuffer::FifoBuffer(size_t size) |
| 918 | : state_(SS_OPEN), buffer_(new char[size]), buffer_length_(size), |
| 919 | data_length_(0), read_position_(0), owner_(Thread::Current()) { |
| 920 | // all events are done on the owner_ thread |
| 921 | } |
| 922 | |
| 923 | FifoBuffer::FifoBuffer(size_t size, Thread* owner) |
| 924 | : state_(SS_OPEN), buffer_(new char[size]), buffer_length_(size), |
| 925 | data_length_(0), read_position_(0), owner_(owner) { |
| 926 | // all events are done on the owner_ thread |
| 927 | } |
| 928 | |
| 929 | FifoBuffer::~FifoBuffer() { |
| 930 | } |
| 931 | |
| 932 | bool FifoBuffer::GetBuffered(size_t* size) const { |
| 933 | CritScope cs(&crit_); |
| 934 | *size = data_length_; |
| 935 | return true; |
| 936 | } |
| 937 | |
| 938 | bool FifoBuffer::SetCapacity(size_t size) { |
| 939 | CritScope cs(&crit_); |
| 940 | if (data_length_ > size) { |
| 941 | return false; |
| 942 | } |
| 943 | |
| 944 | if (size != buffer_length_) { |
| 945 | char* buffer = new char[size]; |
| 946 | const size_t copy = data_length_; |
| 947 | const size_t tail_copy = _min(copy, buffer_length_ - read_position_); |
| 948 | memcpy(buffer, &buffer_[read_position_], tail_copy); |
| 949 | memcpy(buffer + tail_copy, &buffer_[0], copy - tail_copy); |
| 950 | buffer_.reset(buffer); |
| 951 | read_position_ = 0; |
| 952 | buffer_length_ = size; |
| 953 | } |
| 954 | return true; |
| 955 | } |
| 956 | |
| 957 | StreamResult FifoBuffer::ReadOffset(void* buffer, size_t bytes, |
| 958 | size_t offset, size_t* bytes_read) { |
| 959 | CritScope cs(&crit_); |
| 960 | return ReadOffsetLocked(buffer, bytes, offset, bytes_read); |
| 961 | } |
| 962 | |
| 963 | StreamResult FifoBuffer::WriteOffset(const void* buffer, size_t bytes, |
| 964 | size_t offset, size_t* bytes_written) { |
| 965 | CritScope cs(&crit_); |
| 966 | return WriteOffsetLocked(buffer, bytes, offset, bytes_written); |
| 967 | } |
| 968 | |
| 969 | StreamState FifoBuffer::GetState() const { |
| 970 | return state_; |
| 971 | } |
| 972 | |
| 973 | StreamResult FifoBuffer::Read(void* buffer, size_t bytes, |
| 974 | size_t* bytes_read, int* error) { |
| 975 | CritScope cs(&crit_); |
| 976 | const bool was_writable = data_length_ < buffer_length_; |
| 977 | size_t copy = 0; |
| 978 | StreamResult result = ReadOffsetLocked(buffer, bytes, 0, ©); |
| 979 | |
| 980 | if (result == SR_SUCCESS) { |
| 981 | // If read was successful then adjust the read position and number of |
| 982 | // bytes buffered. |
| 983 | read_position_ = (read_position_ + copy) % buffer_length_; |
| 984 | data_length_ -= copy; |
| 985 | if (bytes_read) { |
| 986 | *bytes_read = copy; |
| 987 | } |
| 988 | |
| 989 | // if we were full before, and now we're not, post an event |
| 990 | if (!was_writable && copy > 0) { |
| 991 | PostEvent(owner_, SE_WRITE, 0); |
| 992 | } |
| 993 | } |
| 994 | return result; |
| 995 | } |
| 996 | |
| 997 | StreamResult FifoBuffer::Write(const void* buffer, size_t bytes, |
| 998 | size_t* bytes_written, int* error) { |
| 999 | CritScope cs(&crit_); |
| 1000 | |
| 1001 | const bool was_readable = (data_length_ > 0); |
| 1002 | size_t copy = 0; |
| 1003 | StreamResult result = WriteOffsetLocked(buffer, bytes, 0, ©); |
| 1004 | |
| 1005 | if (result == SR_SUCCESS) { |
| 1006 | // If write was successful then adjust the number of readable bytes. |
| 1007 | data_length_ += copy; |
| 1008 | if (bytes_written) { |
| 1009 | *bytes_written = copy; |
| 1010 | } |
| 1011 | |
| 1012 | // if we didn't have any data to read before, and now we do, post an event |
| 1013 | if (!was_readable && copy > 0) { |
| 1014 | PostEvent(owner_, SE_READ, 0); |
| 1015 | } |
| 1016 | } |
| 1017 | return result; |
| 1018 | } |
| 1019 | |
| 1020 | void FifoBuffer::Close() { |
| 1021 | CritScope cs(&crit_); |
| 1022 | state_ = SS_CLOSED; |
| 1023 | } |
| 1024 | |
| 1025 | const void* FifoBuffer::GetReadData(size_t* size) { |
| 1026 | CritScope cs(&crit_); |
| 1027 | *size = (read_position_ + data_length_ <= buffer_length_) ? |
| 1028 | data_length_ : buffer_length_ - read_position_; |
| 1029 | return &buffer_[read_position_]; |
| 1030 | } |
| 1031 | |
| 1032 | void FifoBuffer::ConsumeReadData(size_t size) { |
| 1033 | CritScope cs(&crit_); |
| 1034 | ASSERT(size <= data_length_); |
| 1035 | const bool was_writable = data_length_ < buffer_length_; |
| 1036 | read_position_ = (read_position_ + size) % buffer_length_; |
| 1037 | data_length_ -= size; |
| 1038 | if (!was_writable && size > 0) { |
| 1039 | PostEvent(owner_, SE_WRITE, 0); |
| 1040 | } |
| 1041 | } |
| 1042 | |
| 1043 | void* FifoBuffer::GetWriteBuffer(size_t* size) { |
| 1044 | CritScope cs(&crit_); |
| 1045 | if (state_ == SS_CLOSED) { |
| 1046 | return NULL; |
| 1047 | } |
| 1048 | |
| 1049 | // if empty, reset the write position to the beginning, so we can get |
| 1050 | // the biggest possible block |
| 1051 | if (data_length_ == 0) { |
| 1052 | read_position_ = 0; |
| 1053 | } |
| 1054 | |
| 1055 | const size_t write_position = (read_position_ + data_length_) |
| 1056 | % buffer_length_; |
| 1057 | *size = (write_position > read_position_ || data_length_ == 0) ? |
| 1058 | buffer_length_ - write_position : read_position_ - write_position; |
| 1059 | return &buffer_[write_position]; |
| 1060 | } |
| 1061 | |
| 1062 | void FifoBuffer::ConsumeWriteBuffer(size_t size) { |
| 1063 | CritScope cs(&crit_); |
| 1064 | ASSERT(size <= buffer_length_ - data_length_); |
| 1065 | const bool was_readable = (data_length_ > 0); |
| 1066 | data_length_ += size; |
| 1067 | if (!was_readable && size > 0) { |
| 1068 | PostEvent(owner_, SE_READ, 0); |
| 1069 | } |
| 1070 | } |
| 1071 | |
| 1072 | bool FifoBuffer::GetWriteRemaining(size_t* size) const { |
| 1073 | CritScope cs(&crit_); |
| 1074 | *size = buffer_length_ - data_length_; |
| 1075 | return true; |
| 1076 | } |
| 1077 | |
| 1078 | StreamResult FifoBuffer::ReadOffsetLocked(void* buffer, |
| 1079 | size_t bytes, |
| 1080 | size_t offset, |
| 1081 | size_t* bytes_read) { |
| 1082 | if (offset >= data_length_) { |
| 1083 | return (state_ != SS_CLOSED) ? SR_BLOCK : SR_EOS; |
| 1084 | } |
| 1085 | |
| 1086 | const size_t available = data_length_ - offset; |
| 1087 | const size_t read_position = (read_position_ + offset) % buffer_length_; |
| 1088 | const size_t copy = _min(bytes, available); |
| 1089 | const size_t tail_copy = _min(copy, buffer_length_ - read_position); |
| 1090 | char* const p = static_cast<char*>(buffer); |
| 1091 | memcpy(p, &buffer_[read_position], tail_copy); |
| 1092 | memcpy(p + tail_copy, &buffer_[0], copy - tail_copy); |
| 1093 | |
| 1094 | if (bytes_read) { |
| 1095 | *bytes_read = copy; |
| 1096 | } |
| 1097 | return SR_SUCCESS; |
| 1098 | } |
| 1099 | |
| 1100 | StreamResult FifoBuffer::WriteOffsetLocked(const void* buffer, |
| 1101 | size_t bytes, |
| 1102 | size_t offset, |
| 1103 | size_t* bytes_written) { |
| 1104 | if (state_ == SS_CLOSED) { |
| 1105 | return SR_EOS; |
| 1106 | } |
| 1107 | |
| 1108 | if (data_length_ + offset >= buffer_length_) { |
| 1109 | return SR_BLOCK; |
| 1110 | } |
| 1111 | |
| 1112 | const size_t available = buffer_length_ - data_length_ - offset; |
| 1113 | const size_t write_position = (read_position_ + data_length_ + offset) |
| 1114 | % buffer_length_; |
| 1115 | const size_t copy = _min(bytes, available); |
| 1116 | const size_t tail_copy = _min(copy, buffer_length_ - write_position); |
| 1117 | const char* const p = static_cast<const char*>(buffer); |
| 1118 | memcpy(&buffer_[write_position], p, tail_copy); |
| 1119 | memcpy(&buffer_[0], p + tail_copy, copy - tail_copy); |
| 1120 | |
| 1121 | if (bytes_written) { |
| 1122 | *bytes_written = copy; |
| 1123 | } |
| 1124 | return SR_SUCCESS; |
| 1125 | } |
| 1126 | |
| 1127 | |
| 1128 | |
| 1129 | /////////////////////////////////////////////////////////////////////////////// |
| 1130 | // LoggingAdapter |
| 1131 | /////////////////////////////////////////////////////////////////////////////// |
| 1132 | |
| 1133 | LoggingAdapter::LoggingAdapter(StreamInterface* stream, LoggingSeverity level, |
| 1134 | const std::string& label, bool hex_mode) |
| 1135 | : StreamAdapterInterface(stream), level_(level), hex_mode_(hex_mode) { |
| 1136 | set_label(label); |
| 1137 | } |
| 1138 | |
| 1139 | void LoggingAdapter::set_label(const std::string& label) { |
| 1140 | label_.assign("["); |
| 1141 | label_.append(label); |
| 1142 | label_.append("]"); |
| 1143 | } |
| 1144 | |
| 1145 | StreamResult LoggingAdapter::Read(void* buffer, size_t buffer_len, |
| 1146 | size_t* read, int* error) { |
| 1147 | size_t local_read; if (!read) read = &local_read; |
| 1148 | StreamResult result = StreamAdapterInterface::Read(buffer, buffer_len, read, |
| 1149 | error); |
| 1150 | if (result == SR_SUCCESS) { |
| 1151 | LogMultiline(level_, label_.c_str(), true, buffer, *read, hex_mode_, &lms_); |
| 1152 | } |
| 1153 | return result; |
| 1154 | } |
| 1155 | |
| 1156 | StreamResult LoggingAdapter::Write(const void* data, size_t data_len, |
| 1157 | size_t* written, int* error) { |
| 1158 | size_t local_written; |
| 1159 | if (!written) written = &local_written; |
| 1160 | StreamResult result = StreamAdapterInterface::Write(data, data_len, written, |
| 1161 | error); |
| 1162 | if (result == SR_SUCCESS) { |
| 1163 | LogMultiline(level_, label_.c_str(), false, data, *written, hex_mode_, |
| 1164 | &lms_); |
| 1165 | } |
| 1166 | return result; |
| 1167 | } |
| 1168 | |
| 1169 | void LoggingAdapter::Close() { |
| 1170 | LogMultiline(level_, label_.c_str(), false, NULL, 0, hex_mode_, &lms_); |
| 1171 | LogMultiline(level_, label_.c_str(), true, NULL, 0, hex_mode_, &lms_); |
| 1172 | LOG_V(level_) << label_ << " Closed locally"; |
| 1173 | StreamAdapterInterface::Close(); |
| 1174 | } |
| 1175 | |
| 1176 | void LoggingAdapter::OnEvent(StreamInterface* stream, int events, int err) { |
| 1177 | if (events & SE_OPEN) { |
| 1178 | LOG_V(level_) << label_ << " Open"; |
| 1179 | } else if (events & SE_CLOSE) { |
| 1180 | LogMultiline(level_, label_.c_str(), false, NULL, 0, hex_mode_, &lms_); |
| 1181 | LogMultiline(level_, label_.c_str(), true, NULL, 0, hex_mode_, &lms_); |
| 1182 | LOG_V(level_) << label_ << " Closed with error: " << err; |
| 1183 | } |
| 1184 | StreamAdapterInterface::OnEvent(stream, events, err); |
| 1185 | } |
| 1186 | |
| 1187 | /////////////////////////////////////////////////////////////////////////////// |
| 1188 | // StringStream - Reads/Writes to an external std::string |
| 1189 | /////////////////////////////////////////////////////////////////////////////// |
| 1190 | |
| 1191 | StringStream::StringStream(std::string& str) |
| 1192 | : str_(str), read_pos_(0), read_only_(false) { |
| 1193 | } |
| 1194 | |
| 1195 | StringStream::StringStream(const std::string& str) |
| 1196 | : str_(const_cast<std::string&>(str)), read_pos_(0), read_only_(true) { |
| 1197 | } |
| 1198 | |
| 1199 | StreamState StringStream::GetState() const { |
| 1200 | return SS_OPEN; |
| 1201 | } |
| 1202 | |
| 1203 | StreamResult StringStream::Read(void* buffer, size_t buffer_len, |
| 1204 | size_t* read, int* error) { |
| 1205 | size_t available = _min(buffer_len, str_.size() - read_pos_); |
| 1206 | if (!available) |
| 1207 | return SR_EOS; |
| 1208 | memcpy(buffer, str_.data() + read_pos_, available); |
| 1209 | read_pos_ += available; |
| 1210 | if (read) |
| 1211 | *read = available; |
| 1212 | return SR_SUCCESS; |
| 1213 | } |
| 1214 | |
| 1215 | StreamResult StringStream::Write(const void* data, size_t data_len, |
| 1216 | size_t* written, int* error) { |
| 1217 | if (read_only_) { |
| 1218 | if (error) { |
| 1219 | *error = -1; |
| 1220 | } |
| 1221 | return SR_ERROR; |
| 1222 | } |
| 1223 | str_.append(static_cast<const char*>(data), |
| 1224 | static_cast<const char*>(data) + data_len); |
| 1225 | if (written) |
| 1226 | *written = data_len; |
| 1227 | return SR_SUCCESS; |
| 1228 | } |
| 1229 | |
| 1230 | void StringStream::Close() { |
| 1231 | } |
| 1232 | |
| 1233 | bool StringStream::SetPosition(size_t position) { |
| 1234 | if (position > str_.size()) |
| 1235 | return false; |
| 1236 | read_pos_ = position; |
| 1237 | return true; |
| 1238 | } |
| 1239 | |
| 1240 | bool StringStream::GetPosition(size_t* position) const { |
| 1241 | if (position) |
| 1242 | *position = read_pos_; |
| 1243 | return true; |
| 1244 | } |
| 1245 | |
| 1246 | bool StringStream::GetSize(size_t* size) const { |
| 1247 | if (size) |
| 1248 | *size = str_.size(); |
| 1249 | return true; |
| 1250 | } |
| 1251 | |
| 1252 | bool StringStream::GetAvailable(size_t* size) const { |
| 1253 | if (size) |
| 1254 | *size = str_.size() - read_pos_; |
| 1255 | return true; |
| 1256 | } |
| 1257 | |
| 1258 | bool StringStream::ReserveSize(size_t size) { |
| 1259 | if (read_only_) |
| 1260 | return false; |
| 1261 | str_.reserve(size); |
| 1262 | return true; |
| 1263 | } |
| 1264 | |
| 1265 | /////////////////////////////////////////////////////////////////////////////// |
| 1266 | // StreamReference |
| 1267 | /////////////////////////////////////////////////////////////////////////////// |
| 1268 | |
| 1269 | StreamReference::StreamReference(StreamInterface* stream) |
| 1270 | : StreamAdapterInterface(stream, false) { |
| 1271 | // owner set to false so the destructor does not free the stream. |
| 1272 | stream_ref_count_ = new StreamRefCount(stream); |
| 1273 | } |
| 1274 | |
| 1275 | StreamInterface* StreamReference::NewReference() { |
| 1276 | stream_ref_count_->AddReference(); |
| 1277 | return new StreamReference(stream_ref_count_, stream()); |
| 1278 | } |
| 1279 | |
| 1280 | StreamReference::~StreamReference() { |
| 1281 | stream_ref_count_->Release(); |
| 1282 | } |
| 1283 | |
| 1284 | StreamReference::StreamReference(StreamRefCount* stream_ref_count, |
| 1285 | StreamInterface* stream) |
| 1286 | : StreamAdapterInterface(stream, false), |
| 1287 | stream_ref_count_(stream_ref_count) { |
| 1288 | } |
| 1289 | |
| 1290 | /////////////////////////////////////////////////////////////////////////////// |
| 1291 | |
| 1292 | StreamResult Flow(StreamInterface* source, |
| 1293 | char* buffer, size_t buffer_len, |
| 1294 | StreamInterface* sink, |
| 1295 | size_t* data_len /* = NULL */) { |
| 1296 | ASSERT(buffer_len > 0); |
| 1297 | |
| 1298 | StreamResult result; |
| 1299 | size_t count, read_pos, write_pos; |
| 1300 | if (data_len) { |
| 1301 | read_pos = *data_len; |
| 1302 | } else { |
| 1303 | read_pos = 0; |
| 1304 | } |
| 1305 | |
| 1306 | bool end_of_stream = false; |
| 1307 | do { |
| 1308 | // Read until buffer is full, end of stream, or error |
| 1309 | while (!end_of_stream && (read_pos < buffer_len)) { |
| 1310 | result = source->Read(buffer + read_pos, buffer_len - read_pos, |
| 1311 | &count, NULL); |
| 1312 | if (result == SR_EOS) { |
| 1313 | end_of_stream = true; |
| 1314 | } else if (result != SR_SUCCESS) { |
| 1315 | if (data_len) { |
| 1316 | *data_len = read_pos; |
| 1317 | } |
| 1318 | return result; |
| 1319 | } else { |
| 1320 | read_pos += count; |
| 1321 | } |
| 1322 | } |
| 1323 | |
| 1324 | // Write until buffer is empty, or error (including end of stream) |
| 1325 | write_pos = 0; |
| 1326 | while (write_pos < read_pos) { |
| 1327 | result = sink->Write(buffer + write_pos, read_pos - write_pos, |
| 1328 | &count, NULL); |
| 1329 | if (result != SR_SUCCESS) { |
| 1330 | if (data_len) { |
| 1331 | *data_len = read_pos - write_pos; |
| 1332 | if (write_pos > 0) { |
| 1333 | memmove(buffer, buffer + write_pos, *data_len); |
| 1334 | } |
| 1335 | } |
| 1336 | return result; |
| 1337 | } |
| 1338 | write_pos += count; |
| 1339 | } |
| 1340 | |
| 1341 | read_pos = 0; |
| 1342 | } while (!end_of_stream); |
| 1343 | |
| 1344 | if (data_len) { |
| 1345 | *data_len = 0; |
| 1346 | } |
| 1347 | return SR_SUCCESS; |
| 1348 | } |
| 1349 | |
| 1350 | /////////////////////////////////////////////////////////////////////////////// |
| 1351 | |
| 1352 | } // namespace talk_base |