/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
44static 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_ */