src/lwes_time_functions.c

   1 /*======================================================================*
   2  * Copyright (C) 2008 Light Weight Event System                         *
   3  * All rights reserved.                                                 *
   4  *                                                                      *
   5  * This program is free software; you can redistribute it and/or modify *
   6  * it under the terms of the GNU General Public License as published by *
   7  * the Free Software Foundation; either version 2 of the License, or    *
   8  * (at your option) any later version.                                  *
   9  *                                                                      *
  10  * This program is distributed in the hope that it will be useful,      *
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
  13  * GNU General Public License for more details.                         *
  14  *                                                                      *
  15  * You should have received a copy of the GNU General Public License    *
  16  * along with this program; if not, write to the Free Software          *
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor,                   *
  18  * Boston, MA 02110-1301 USA.                                           *
  19  *======================================================================*/
  20 #include "lwes_time_functions.h"
  21
  22 #if HAVE_CONFIG_H
  23   #include <config.h>
  24 #endif
  25
  26 #if HAVE_EXTERNAL_GETTIMEOFDAY
  27 #include EXTERNAL_GETTIMEOFDAY_HEADER
  28 #endif
  29
  30 #ifndef GETTIMEOFDAY
  31 #define GETTIMEOFDAY(t,tz) gettimeofday(t,tz)
  32 #endif
  33
  34
  35 LWES_INT_64 currentTimeMillisLongLong(void)
  36 {
  37   struct timeval t;
  38
  39   /* gettimeofday should ALWAYS return a value since the only possible error
  40    * according to the FreeBSD and Linux man pages is EFAULT if you access
  41    * invalid memory, this memory is on the stack so better be valid or we
  42    * have bigger problems
  43    */
  44   GETTIMEOFDAY(&t,0);
  45
  46   return ((((LWES_INT_64)t.tv_sec)*((LWES_INT_64)1000)) +
  47                              (LWES_INT_64)(t.tv_usec/1000));
  48 }
  49
  50 void convertUnixLongLongTimeToTimeval(LWES_INT_64 timestamp, struct timeval *t)
  51 {
  52   t->tv_sec = (long)(timestamp/1000);
  53   t->tv_usec = (long)((timestamp%1000)*1000);
  54 }
  55