| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "media/audio/audio_thread_impl.h" |
| |
| #include "base/message_loop/message_pump_type.h" |
| #include "base/threading/thread_task_runner_handle.h" |
| #include "base/time/default_tick_clock.h" |
| #include "build/build_config.h" |
| #include "media/audio/audio_thread_hang_monitor.h" |
| #include "third_party/abseil-cpp/absl/types/optional.h" |
| |
| namespace media { |
| |
| AudioThreadImpl::AudioThreadImpl() |
| : thread_("AudioThread"), |
| hang_monitor_(nullptr, base::OnTaskRunnerDeleter(nullptr)) { |
| base::Thread::Options thread_options; |
| #if defined(OS_WIN) |
| thread_.init_com_with_mta(true); |
| #elif defined(OS_FUCHSIA) |
| // FIDL-based APIs require async_t, which is initialized on IO thread. |
| thread_options.message_pump_type = base::MessagePumpType::IO; |
| thread_options.priority = base::ThreadPriority::REALTIME_AUDIO; |
| #endif |
| CHECK(thread_.StartWithOptions(std::move(thread_options))); |
| |
| #if defined(OS_MAC) |
| // On Mac, the audio task runner must belong to the main thread. |
| // See http://crbug.com/158170. |
| task_runner_ = base::ThreadTaskRunnerHandle::Get(); |
| #else |
| task_runner_ = thread_.task_runner(); |
| #endif |
| worker_task_runner_ = thread_.task_runner(); |
| |
| #if !defined(OS_MAC) && !defined(OS_ANDROID) |
| // Since we run on the main thread on Mac, we don't need a hang monitor. |
| // https://crbug.com/946968: The hang monitor possibly causes crashes on |
| // Android |
| hang_monitor_ = AudioThreadHangMonitor::Create( |
| AudioThreadHangMonitor::HangAction::kDoNothing, absl::nullopt, |
| base::DefaultTickClock::GetInstance(), task_runner_); |
| #endif |
| } |
| |
| AudioThreadImpl::~AudioThreadImpl() { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| } |
| |
| void AudioThreadImpl::Stop() { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| |
| hang_monitor_.reset(); |
| |
| // Note that on MACOSX, we can still have tasks posted on the |task_runner_|, |
| // since it is the main thread task runner and we do not stop the main thread. |
| // But this is fine because none of those tasks will actually run. |
| thread_.Stop(); |
| } |
| |
| bool AudioThreadImpl::IsHung() const { |
| DCHECK_CALLED_ON_VALID_THREAD(thread_checker_); |
| return hang_monitor_ ? hang_monitor_->IsAudioThreadHung() : false; |
| } |
| |
| base::SingleThreadTaskRunner* AudioThreadImpl::GetTaskRunner() { |
| return task_runner_.get(); |
| } |
| |
| base::SingleThreadTaskRunner* AudioThreadImpl::GetWorkerTaskRunner() { |
| return worker_task_runner_.get(); |
| } |
| |
| } // namespace media |