/*
   +----------------------------------------------------------------------+
   | HipHop for PHP                                                       |
   +----------------------------------------------------------------------+
   | Copyright (c) 2010-2013 Facebook, Inc. (http://www.facebook.com)     |
   | Copyright (c) 1998-2010 Zend Technologies Ltd. (http://www.zend.com) |
   +----------------------------------------------------------------------+
   | This source file is subject to version 2.00 of the Zend license,     |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.zend.com/license/2_00.txt.                                |
   | If you did not receive a copy of the Zend license and are unable to  |
   | obtain it through the world-wide-web, please send a note to          |
   | license@zend.com so we can mail you a copy immediately.              |
   +----------------------------------------------------------------------+
*/

#ifndef incl_HPHP_TIMEOUT_THREAD_H_
#define incl_HPHP_TIMEOUT_THREAD_H_

#include <queue>

#include "hphp/runtime/base/types.h"
#include "hphp/util/base.h"
#include "hphp/util/process.h"
#include "hphp/util/synchronizable.h"
#include <event.h>

namespace HPHP {
///////////////////////////////////////////////////////////////////////////////

class TimeoutThread : public Synchronizable {
public:
  static void DeferTimeout(int seconds);

public:
  TimeoutThread(int timeoutSeconds);
  ~TimeoutThread();

  void registerRequestThread(RequestInjectionData* data);
  void removeRequestThread(RequestInjectionData* data);
  void run();
  void stop();

  void onTimer(int index);

private:
  void checkForNewWorkers();
  void drainPipe();
  void notifyPipe();

  int m_nextId;
  // m_pendingIds contains ids of threads that were added or removed
  // and need to be processed by the worker thread
  std::queue<int> m_pendingIds;
  bool m_stopped;

  event_base *m_eventBase;

  struct ClientThread {
    RequestInjectionData* data;
    event e;
  };
  std::map<int, ClientThread> m_clients;
  int m_timeoutSeconds;

  // signal to wake up the thread
  event m_eventPipe;
  CPipe m_pipe;
};

///////////////////////////////////////////////////////////////////////////////
}

#endif // incl_HPHP_TIMEOUT_THREAD_H_