Modules/timing.h

   1 /*
   2  * Copyright (c) 1993 George V. Neville-Neil
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name, George Neville-Neil may not be used to endorse or promote
  14  *    products derived from this software without specific prior
  15  *    written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  */
  29
  30 #ifndef _TIMING_H_
  31 #define _TIMING_H_
  32
  33 #ifdef TIME_WITH_SYS_TIME
  34 #include <sys/time.h>
  35 #include <time.h>
  36 #else /* !TIME_WITH_SYS_TIME */
  37 #ifdef HAVE_SYS_TIME_H
  38 #include <sys/time.h>
  39 #else /* !HAVE_SYS_TIME_H */
  40 #include <time.h>
  41 #endif /* !HAVE_SYS_TIME_H */
  42 #endif /* !TIME_WITH_SYS_TIME */
  43
  44 static struct timeval aftertp, beforetp;
  45
  46 #define BEGINTIMING gettimeofday(&beforetp, NULL)
  47
  48 #define ENDTIMING gettimeofday(&aftertp, NULL); \
  49     if(beforetp.tv_usec > aftertp.tv_usec) \
  50     {  \
  51          aftertp.tv_usec += 1000000;  \
  52          aftertp.tv_sec--; \
  53     }
  54
  55 #define TIMINGUS (((aftertp.tv_sec - beforetp.tv_sec) * 1000000) + \
  56                   (aftertp.tv_usec - beforetp.tv_usec))
  57
  58 #define TIMINGMS (((aftertp.tv_sec - beforetp.tv_sec) * 1000) + \
  59                   ((aftertp.tv_usec - beforetp.tv_usec) / 1000))
  60
  61 #define TIMINGS  ((aftertp.tv_sec - beforetp.tv_sec) + \
  62                   (aftertp.tv_usec - beforetp.tv_usec) / 1000000)
  63
  64 #endif /* _TIMING_H_ */