/*
 *  Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#ifndef SYSTEM_WRAPPERS_SOURCE_EVENT_POSIX_H_
#define SYSTEM_WRAPPERS_SOURCE_EVENT_POSIX_H_

#include "system_wrappers/include/event_wrapper.h"

#include <memory>

#include <pthread.h>
#include <time.h>

#include "rtc_base/platform_thread.h"

namespace webrtc {

enum State { kUp = 1, kDown = 2 };

class EventTimerPosix : public EventTimerWrapper {
 public:
  EventTimerPosix();
  ~EventTimerPosix() override;

  EventTypeWrapper Wait(unsigned long max_time) override;
  bool Set() override;

  bool StartTimer(bool periodic, unsigned long time) override;
  bool StopTimer() override;

 private:
  friend class EventTimerPosixTest;

  static bool Run(void* obj);
  bool Process();
  EventTypeWrapper Wait(timespec* end_at, bool reset_state);

  virtual rtc::PlatformThread* CreateThread();

  pthread_cond_t cond_;
  pthread_mutex_t mutex_;
  bool event_set_;

  // TODO(pbos): Remove unique_ptr and use PlatformThread directly.
  std::unique_ptr<rtc::PlatformThread> timer_thread_;
  std::unique_ptr<EventTimerPosix> timer_event_;
  timespec created_at_;

  bool periodic_;
  unsigned long time_ms_;
  unsigned long count_;
  bool is_stopping_;
};

}  // namespace webrtc

#endif  // SYSTEM_WRAPPERS_SOURCE_EVENT_POSIX_H_