source: source/ariba/communication/modules/transport/protlib/eclock_gettime.c@ 4987

/// ----------------------------------------*- mode: C++; -*--

/// @file eclock_gettime.c

/// emulates a clock_gettime call for systems not having it

/// ----------------------------------------------------------

/// $Id: eclock_gettime.c 2549 2007-04-02 22:17:37Z bless $

/// $HeadURL: https://svn.ipv6.tm.uka.de/nsis/protlib/trunk/fastqueue/eclock_gettime.c $

// ===========================================================

//                      

// Copyright (C) 2005-2007, all rights reserved by

// - Institute of Telematics, Universitaet Karlsruhe (TH)

//

// More information and contact:

// https://projekte.tm.uka.de/trac/NSIS

//                      

// 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; version 2 of the License

//

// 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.,

// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

//

// ===========================================================

/** @addtogroup fastqueue Fast Queue

 * @{

 */







#include <sys/time.h>

#include <unistd.h>



/* struct timezone tz = { 0, DST_NONE }; */

static struct timeval tv;

typedef int             clockid_t;



/* syntax for clock_gettime:

   int clock_gettime (clockid_t clock_id, struct timespec *tp);



   to supply it include the following (because of speed):

   extern int eclock_gettime(struct timespec *tp);

   #define clock_gettime(clock_id, tspec) eclock_gettime(tspec)

*/



int eclock_gettime(struct timespec *tp)

{

  /* DESCRIPTION



  The clock_gettime function returns the current time (in seconds and

  nanoseconds) for the specified clock.  The clock_settime function sets the

  specified clock. The CLOCK_REALTIME clock measures the amount of time

  elapsed since 00:00:00:00 January 1, 1970 Greenwich Mean Time (GMT), other-

  wise known as the Epoch. Time values  that fall between two non-negative

  integer multiples of the resolution are truncated down to the smaller mul-

  tiple of the resolution.



  */

  if (gettimeofday(&tv, 0) == 0)

  {

#ifdef DEBUG

    if (tp)

#endif

    {

      tp->tv_sec= tv.tv_sec;

      tp->tv_nsec= tv.tv_usec*1000;

      return 0;

    }

  }

  else

    return -1;

}



//@}