blob: 4e9416dac248312b30c0bf6fb72a8578b3530825 [file] [log] [blame]
// Copyright 2018 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 "base/callback.h"
#include "base/synchronization/lock.h"
#include "base/threading/watchdog.h"
#include "base/time/time.h"
namespace chrome_cleaner {
// This implements a watchdog timer that ensures the process eventually
// terminates, even if some threads are blocked or being kept alive for
// some reason. This is not expected to trigger if process shutdown is working
// correctly. The triggering of the alarm indicates a sign of trouble, and so
// the Alarm() method will log some diagnostic information before shutting down
// the process.
class ShutdownWatchdog : public base::Watchdog {
// An |AlarmCallback| returns the exit code that should be used when
// terminating the process.
typedef base::OnceCallback<int()> AlarmCallback;
// Create a watchdog that waits for |duration| (after the watchdog is armed)
// before shutting down the process. |callback| is called before the process
// is terminated and should return the exit code to be used when exiting.
ShutdownWatchdog(const base::TimeDelta& duration, AlarmCallback callback);
~ShutdownWatchdog() override;
// This method is called by the watchdog thread when a timeout occurs.
void Alarm() override;
// Callback called when the process execution is aborted.
AlarmCallback callback_;
} // namespace chrome_cleaner