siptimer.h

一个SIP协议栈

#ifndef __SIPTIMER_H__
#define __SIPTIMER_H__

/*********************************************************************

 $Id: SIPTimer.h,v 1.2 1999/08/31 02:22:05 cullen Exp $

 *********************************************************************

  This library is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as
  published by the Free Software Foundation; either version 2 of the
  License, or (at your option) any later version.  In addition to the
  terms and conditions set forth in the GNU Lesser General Public
  License, as a condition of using this library you are required to
  grant to all users of this library or any implementation utilizing
  or derived from this library a reciprocal, no cost, worldwide,
  perpetual, non-exclusive, non-transferable, unrestricted license to
  your claims of all patents and patent applications throughout the
  world that are infringed by the library or any implementation
  utilizing or derived from this library.  In the event you
  redistribute this library or any implementation utilizing or derived
  from this library, you must prominently display the foregoing terms
  and conditions with the library or the implementation utilizing or
  derived from this library.
 
  In the event of a conflict of terms between the foregoing license
  grant and the terms set forth in the GNU Lesser General Public
  License, the foregoing terms and conditions shall be deemed to
  govern.
 
  This library 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
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not; write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  USA.
 
  Copyright 1999 Vovida Networks, Inc.  All Rights Reserved.

 *********************************************************************

 $Log: SIPTimer.h,v $
 Revision 1.2  1999/08/31 02:22:05  cullen
 updated header


 **********************************************************************/



#include <sys/time.h>


namespace msip
{

    //==================================================================================
    ///Timer Set and Check Interval (milliseconds)
    class Timer
    {
        ///Current interval in milliseconds
        long    tm_Interval;

        ///Time value
        timeval tm_Time;

    public:
        ///Default constructor
        Timer() : tm_Interval(0) { tm_Time.tv_sec = 0; tm_Time.tv_usec = 0; }

        ///Whether all values are empty
        bool empty() { return tm_Time.tv_sec == 0 && tm_Time.tv_usec == 0 && tm_Interval == 0; }

        ///Set tm_Time as the Current time-stamp
        void setCurrent();

        ///Set time interval 
        void setInterval(long milli_sec);

        ///Get current interval (milliseconds) from the last setCurrent
        long getInterval() const;

        ///Get interval between two timers in milliseconds
        long getInterval(const Timer &tm) const;

        ///Check if current time value is out of current interval
        bool outOfInterval() const;

        ///Check if the Timer 'tm' is out of current interval
        bool outOfInterval(const Timer &tm) const;
    };


}


#endif