osip_time.h

基于GNU的VoIP SIP协议（RFC3261）实现代码

/*
  The oSIP library implements the Session Initiation Protocol (SIP -rfc3261-)
  Copyright (C) 2001,2002,2003,2004,2005,2006,2007 Aymeric MOIZARD [e-mail]
  
  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 2.1 of the License, or (at your option) any later version.
  
  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
*/

#ifndef _OSIP_TIME_H_
#define _OSIP_TIME_H_

#ifdef __cplusplus
extern "C"
{
#endif

/* Common time-related functions and data types */

#if defined(_WIN32_WCE)
struct _timeb {
  time_t time;
  unsigned short millitm;
  short timezone;
  short dstflag;
};

#endif

/* struct timeval, as defined in <sys/time.h>, <winsock.h> or <winsock2.h> */
  struct timeval;

/* Time manipulation functions */
  void add_gettimeofday (struct timeval *atv, int ms);
  void min_timercmp (struct timeval *tv1, struct timeval *tv2);

/* OS-dependent */
#if defined(WIN32) || defined(_WIN32_WCE) || defined (__VXWORKS_OS__) || defined(__arc__)
/* Operations on struct timeval */
#define osip_timerisset(tvp)         ((tvp)->tv_sec || (tvp)->tv_usec)
# define osip_timercmp(a, b, CMP)                          \
  (((a)->tv_sec == (b)->tv_sec) ?                          \
   ((a)->tv_usec CMP (b)->tv_usec) :                       \
   ((a)->tv_sec CMP (b)->tv_sec))
#define osip_timerclear(tvp)         (tvp)->tv_sec = (tvp)->tv_usec = 0

/* osip_gettimeofday() for Windows */
#if defined(__arc__)
#define osip_gettimeofday gettimeofday
#else
  int osip_gettimeofday (struct timeval *tp, void *tz);
#endif

#else
/* Operations on struct timeval */
#define osip_timerisset(tvp)            timerisset(tvp)
#define osip_timercmp(tvp, uvp, cmp)    timercmp(tvp,uvp,cmp)
#define osip_timerclear(tvp)            timerclear(tvp)

/* osip_gettimeofday() == gettimeofday() */
#define osip_gettimeofday gettimeofday

#endif

#ifdef __cplusplus
}
#endif

#endif