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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by George V. Neville-Neil
  16  * 4. The name, George Neville-Neil may not be used to endorse or promote
  17  *    products derived from this software without specific prior
  18  *    written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  21  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 /*
  34  *
  35  * File: $Id$
  36  *
  37  * Author: George V. Neville-Neil
  38  *
  39  * Update History: $Log$
  40  * Update History: Revision 2.2  1994/01/14 16:55:47  guido
  41  * Update History: Make more robust against Minix and Mac
  42  * Update History:
  43  * Revision 2.1  1994/01/02  23:22:19  guido
  44  * Added George Neville-Neil's timing module
  45  *
  46  * Revision 1.1  93/12/28  13:14:19  gnn
  47  * Initial revision
  48  *
  49  * Revision 1.1  93/12/23  18:59:10  gnn
  50  * Initial revision
  51  *
  52  * Revision 1.3  93/07/22  15:57:39  15:57:39  gnn (George Neville-Neil)
  53  * Added copyright message.
  54  *
  55  * Revision 1.2  1993/07/22  12:12:34  gnn
  56  * Latest macros.  They now evaluate to rvalues.
  57  *
  58  * Revision 1.1  93/07/19  16:56:18  16:56:18  gnn (George Neville-Neil)
  59  * Initial revision
  60  *
  61  *
  62  *
  63  */
  64
  65 #ifndef _TIMING_H_
  66 #define _TIMING_H_
  67
  68 #ifdef TIME_WITH_SYS_TIME
  69 #include <sys/time.h>
  70 #include <time.h>
  71 #else /* !TIME_WITH_SYS_TIME */
  72 #ifdef HAVE_SYS_TIME_H
  73 #include <sys/time.h>
  74 #else /* !HAVE_SYS_TIME_H */
  75 #include <time.h>
  76 #endif /* !HAVE_SYS_TIME_H */
  77 #endif /* !TIME_WITH_SYS_TIME */
  78
  79 static struct timeval aftertp, beforetp;
  80
  81 #define BEGINTIMING gettimeofday(&beforetp, NULL)
  82
  83 #define ENDTIMING gettimeofday(&aftertp, NULL); \
  84     if(beforetp.tv_usec > aftertp.tv_usec) \
  85     {  \
  86          aftertp.tv_usec += 1000000;  \
  87          aftertp.tv_sec--; \
  88     }
  89
  90 #define TIMINGUS (((aftertp.tv_sec - beforetp.tv_sec) * 1000000) + \
  91                   (aftertp.tv_usec - beforetp.tv_usec))
  92
  93 #define TIMINGMS (((aftertp.tv_sec - beforetp.tv_sec) * 1000) + \
  94                   ((aftertp.tv_usec - beforetp.tv_usec) / 1000))
  95
  96 #define TIMINGS  ((aftertp.tv_sec - beforetp.tv_sec) + \
  97                   (aftertp.tv_usec - beforetp.tv_usec) / 1000000)
  98
  99 #endif /* _TIMING_H_ */