/* -*-mode: C; fill-column: 78; c-basic-offset: 4; -*- */

/* 
 * Copyright 2005 by Eric House (xwords@eehouse.org).  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#ifndef _TIMERMGR_H_
#define _TIMERMGR_H_

#include "list"

#include <pthread.h>

#include "xwrelay_priv.h"

using namespace std;

typedef void (*TimerProc)( void* closure );


class TimerMgr {

 public:
    static TimerMgr* GetTimerMgr();

    void SetTimer( time_t inMillis, TimerProc proc, void* closure,
                   int interval ); /* 0 means non-recurring */
    void ClearTimer( TimerProc proc, void* closure );
  
    time_t GetPollTimeout();
    void FireElapsedTimers();

 private:

    typedef struct {
        TimerProc proc;
        void* closure;
        time_t when;
        int interval;
    } TimerInfo;
  

    TimerMgr();
    static void sighandler( int signal );

    /* run once we have the mutex */
    void clearTimerImpl( TimerProc proc, void* closure );
    bool getTimer( TimerProc proc, void* closure );
    void figureNextFire();
  
    pthread_mutex_t m_timersMutex;
    list<TimerInfo> m_timers;

    time_t m_nextFireTime;
};

#endif