chromium/base/threading/watchdog.h

// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// The Watchdog class creates a second thread that can Alarm if a specific
// duration of time passes without proper attention.  The duration of time is
// specified at construction time.  The Watchdog may be used many times by
// simply calling Arm() (to start timing) and Disarm() (to reset the timer).
// The Watchdog is typically used under a debugger, where the stack traces on
// other threads can be examined if/when the Watchdog alarms.

// Some watchdogs will be enabled or disabled via command line switches. To
// facilitate such code, an "enabled" argument for the constuctor can be used
// to permanently disable the watchdog.  Disabled watchdogs don't even spawn
// a second thread, and their methods call (Arm() and Disarm()) return very
// quickly.

#ifndef BASE_THREADING_WATCHDOG_H_
#define BASE_THREADING_WATCHDOG_H_

#include <string>

#include "base/base_export.h"
#include "base/compiler_specific.h"
#include "base/memory/raw_ptr.h"
#include "base/synchronization/condition_variable.h"
#include "base/synchronization/lock.h"
#include "base/threading/platform_thread.h"
#include "base/time/time.h"

namespace base {

class BASE_EXPORT Watchdog { … };

}  // namespace base

#endif  // BASE_THREADING_WATCHDOG_H_