chromium/media/audio/audio_thread_hang_monitor.h

// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef MEDIA_AUDIO_AUDIO_THREAD_HANG_MONITOR_H_
#define MEDIA_AUDIO_AUDIO_THREAD_HANG_MONITOR_H_

#include <atomic>
#include <memory>
#include <optional>

#include "base/functional/callback_forward.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_refptr.h"
#include "base/sequence_checker.h"
#include "base/task/sequenced_task_runner.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "media/audio/audio_manager.h"
#include "media/base/media_export.h"

namespace base {
class TickClock;
class SingleThreadTaskRunner;
}  // namespace base

namespace media {

// This class detects if the audio manager thread is hung. It logs a histogram,
// and can optionally (if |dump_on_hang| is set) upload a crash dump when a hang
// is detected. It runs on a task runner from the task scheduler. It works by
// posting a task to the audio thread every minute and checking that it was
// executed. If three consecutive such pings are missed, the thread is
// considered hung.
class MEDIA_EXPORT AudioThreadHangMonitor final { … };

}  // namespace media

#endif  // MEDIA_AUDIO_AUDIO_THREAD_HANG_MONITOR_H_