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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "mojo/edk/system/raw_channel.h" | 5 #include "mojo/edk/system/raw_channel.h" |
6 | 6 |
7 #include <windows.h> | 7 #include <windows.h> |
8 | 8 |
9 #include "base/auto_reset.h" | 9 #include "base/auto_reset.h" |
10 #include "base/bind.h" | 10 #include "base/bind.h" |
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364 | 364 |
365 RawChannel::IOResult RawChannelWin::Read(size_t* bytes_read) { | 365 RawChannel::IOResult RawChannelWin::Read(size_t* bytes_read) { |
366 DCHECK_EQ(base::MessageLoop::current(), message_loop_for_io()); | 366 DCHECK_EQ(base::MessageLoop::current(), message_loop_for_io()); |
367 DCHECK(io_handler_); | 367 DCHECK(io_handler_); |
368 DCHECK(!io_handler_->pending_read()); | 368 DCHECK(!io_handler_->pending_read()); |
369 | 369 |
370 char* buffer = nullptr; | 370 char* buffer = nullptr; |
371 size_t bytes_to_read = 0; | 371 size_t bytes_to_read = 0; |
372 read_buffer()->GetBuffer(&buffer, &bytes_to_read); | 372 read_buffer()->GetBuffer(&buffer, &bytes_to_read); |
373 | 373 |
374 BOOL result = | 374 BOOL result = ReadFile(io_handler_->handle(), |
375 ReadFile(io_handler_->handle(), buffer, static_cast<DWORD>(bytes_to_read), | 375 buffer, |
376 nullptr, &io_handler_->read_context()->overlapped); | 376 static_cast<DWORD>(bytes_to_read), |
| 377 nullptr, |
| 378 &io_handler_->read_context()->overlapped); |
377 if (!result) { | 379 if (!result) { |
378 DWORD error = GetLastError(); | 380 DWORD error = GetLastError(); |
379 if (error == ERROR_BROKEN_PIPE) | 381 if (error == ERROR_BROKEN_PIPE) |
380 return IO_FAILED_SHUTDOWN; | 382 return IO_FAILED_SHUTDOWN; |
381 if (error != ERROR_IO_PENDING) { | 383 if (error != ERROR_IO_PENDING) { |
382 LOG(WARNING) << "ReadFile: " << logging::SystemErrorCodeToString(error); | 384 LOG(WARNING) << "ReadFile: " << logging::SystemErrorCodeToString(error); |
383 return IO_FAILED_UNKNOWN; | 385 return IO_FAILED_UNKNOWN; |
384 } | 386 } |
385 } | 387 } |
386 | 388 |
387 if (result && skip_completion_port_on_success_) { | 389 if (result && skip_completion_port_on_success_) { |
388 DWORD bytes_read_dword = 0; | 390 DWORD bytes_read_dword = 0; |
389 BOOL get_size_result = GetOverlappedResult( | 391 BOOL get_size_result = |
390 io_handler_->handle(), &io_handler_->read_context()->overlapped, | 392 GetOverlappedResult(io_handler_->handle(), |
391 &bytes_read_dword, FALSE); | 393 &io_handler_->read_context()->overlapped, |
| 394 &bytes_read_dword, |
| 395 FALSE); |
392 DPCHECK(get_size_result); | 396 DPCHECK(get_size_result); |
393 *bytes_read = bytes_read_dword; | 397 *bytes_read = bytes_read_dword; |
394 return IO_SUCCEEDED; | 398 return IO_SUCCEEDED; |
395 } | 399 } |
396 | 400 |
397 // If the read is pending or the read has succeeded but we don't skip | 401 // If the read is pending or the read has succeeded but we don't skip |
398 // completion port on success, instruct |io_handler_| to wait for the | 402 // completion port on success, instruct |io_handler_| to wait for the |
399 // completion packet. | 403 // completion packet. |
400 // | 404 // |
401 // TODO(yzshen): It seems there isn't document saying that all error cases | 405 // TODO(yzshen): It seems there isn't document saying that all error cases |
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415 size_t bytes_read = 0; | 419 size_t bytes_read = 0; |
416 IOResult io_result = Read(&bytes_read); | 420 IOResult io_result = Read(&bytes_read); |
417 if (io_result == IO_SUCCEEDED) { | 421 if (io_result == IO_SUCCEEDED) { |
418 DCHECK(skip_completion_port_on_success_); | 422 DCHECK(skip_completion_port_on_success_); |
419 | 423 |
420 // We have finished reading successfully. Queue a notification manually. | 424 // We have finished reading successfully. Queue a notification manually. |
421 io_handler_->OnPendingReadStarted(); | 425 io_handler_->OnPendingReadStarted(); |
422 // |io_handler_| won't go away before the task is run, so it is safe to use | 426 // |io_handler_| won't go away before the task is run, so it is safe to use |
423 // |base::Unretained()|. | 427 // |base::Unretained()|. |
424 message_loop_for_io()->PostTask( | 428 message_loop_for_io()->PostTask( |
425 FROM_HERE, base::Bind(&RawChannelIOHandler::OnIOCompleted, | 429 FROM_HERE, |
426 base::Unretained(io_handler_), | 430 base::Bind(&RawChannelIOHandler::OnIOCompleted, |
427 base::Unretained(io_handler_->read_context()), | 431 base::Unretained(io_handler_), |
428 static_cast<DWORD>(bytes_read), ERROR_SUCCESS)); | 432 base::Unretained(io_handler_->read_context()), |
| 433 static_cast<DWORD>(bytes_read), |
| 434 ERROR_SUCCESS)); |
429 return IO_PENDING; | 435 return IO_PENDING; |
430 } | 436 } |
431 | 437 |
432 return io_result; | 438 return io_result; |
433 } | 439 } |
434 | 440 |
435 embedder::ScopedPlatformHandleVectorPtr RawChannelWin::GetReadPlatformHandles( | 441 embedder::ScopedPlatformHandleVectorPtr RawChannelWin::GetReadPlatformHandles( |
436 size_t num_platform_handles, | 442 size_t num_platform_handles, |
437 const void* platform_handle_table) { | 443 const void* platform_handle_table) { |
438 // TODO(vtl): Implement. | 444 // TODO(vtl): Implement. |
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452 // TODO(vtl): Implement. | 458 // TODO(vtl): Implement. |
453 NOTIMPLEMENTED(); | 459 NOTIMPLEMENTED(); |
454 } | 460 } |
455 | 461 |
456 std::vector<WriteBuffer::Buffer> buffers; | 462 std::vector<WriteBuffer::Buffer> buffers; |
457 write_buffer_no_lock()->GetBuffers(&buffers); | 463 write_buffer_no_lock()->GetBuffers(&buffers); |
458 DCHECK(!buffers.empty()); | 464 DCHECK(!buffers.empty()); |
459 | 465 |
460 // TODO(yzshen): Handle multi-segment writes more efficiently. | 466 // TODO(yzshen): Handle multi-segment writes more efficiently. |
461 DWORD bytes_written_dword = 0; | 467 DWORD bytes_written_dword = 0; |
462 BOOL result = | 468 BOOL result = WriteFile(io_handler_->handle(), |
463 WriteFile(io_handler_->handle(), buffers[0].addr, | 469 buffers[0].addr, |
464 static_cast<DWORD>(buffers[0].size), &bytes_written_dword, | 470 static_cast<DWORD>(buffers[0].size), |
465 &io_handler_->write_context_no_lock()->overlapped); | 471 &bytes_written_dword, |
| 472 &io_handler_->write_context_no_lock()->overlapped); |
466 if (!result) { | 473 if (!result) { |
467 DWORD error = GetLastError(); | 474 DWORD error = GetLastError(); |
468 if (error == ERROR_BROKEN_PIPE) | 475 if (error == ERROR_BROKEN_PIPE) |
469 return IO_FAILED_SHUTDOWN; | 476 return IO_FAILED_SHUTDOWN; |
470 if (error != ERROR_IO_PENDING) { | 477 if (error != ERROR_IO_PENDING) { |
471 LOG(WARNING) << "WriteFile: " << logging::SystemErrorCodeToString(error); | 478 LOG(WARNING) << "WriteFile: " << logging::SystemErrorCodeToString(error); |
472 return IO_FAILED_UNKNOWN; | 479 return IO_FAILED_UNKNOWN; |
473 } | 480 } |
474 } | 481 } |
475 | 482 |
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507 | 514 |
508 // We have finished writing successfully. Queue a notification manually. | 515 // We have finished writing successfully. Queue a notification manually. |
509 io_handler_->OnPendingWriteStartedNoLock(); | 516 io_handler_->OnPendingWriteStartedNoLock(); |
510 // |io_handler_| won't go away before that task is run, so it is safe to use | 517 // |io_handler_| won't go away before that task is run, so it is safe to use |
511 // |base::Unretained()|. | 518 // |base::Unretained()|. |
512 message_loop_for_io()->PostTask( | 519 message_loop_for_io()->PostTask( |
513 FROM_HERE, | 520 FROM_HERE, |
514 base::Bind(&RawChannelIOHandler::OnIOCompleted, | 521 base::Bind(&RawChannelIOHandler::OnIOCompleted, |
515 base::Unretained(io_handler_), | 522 base::Unretained(io_handler_), |
516 base::Unretained(io_handler_->write_context_no_lock()), | 523 base::Unretained(io_handler_->write_context_no_lock()), |
517 static_cast<DWORD>(bytes_written), ERROR_SUCCESS)); | 524 static_cast<DWORD>(bytes_written), |
| 525 ERROR_SUCCESS)); |
518 return IO_PENDING; | 526 return IO_PENDING; |
519 } | 527 } |
520 | 528 |
521 return io_result; | 529 return io_result; |
522 } | 530 } |
523 | 531 |
524 bool RawChannelWin::OnInit() { | 532 bool RawChannelWin::OnInit() { |
525 DCHECK_EQ(base::MessageLoop::current(), message_loop_for_io()); | 533 DCHECK_EQ(base::MessageLoop::current(), message_loop_for_io()); |
526 | 534 |
527 DCHECK(handle_.is_valid()); | 535 DCHECK(handle_.is_valid()); |
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568 | 576 |
569 // Static factory method declared in raw_channel.h. | 577 // Static factory method declared in raw_channel.h. |
570 // static | 578 // static |
571 scoped_ptr<RawChannel> RawChannel::Create( | 579 scoped_ptr<RawChannel> RawChannel::Create( |
572 embedder::ScopedPlatformHandle handle) { | 580 embedder::ScopedPlatformHandle handle) { |
573 return make_scoped_ptr(new RawChannelWin(handle.Pass())); | 581 return make_scoped_ptr(new RawChannelWin(handle.Pass())); |
574 } | 582 } |
575 | 583 |
576 } // namespace system | 584 } // namespace system |
577 } // namespace mojo | 585 } // namespace mojo |
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