ref: 7c1e0be91969ab0d8fca4bd1fd52de32f4a9a0c5
dir: /sys/src/cmd/python/Modules/timing.h/
/*
* Copyright (c) 1993 George V. Neville-Neil
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by George V. Neville-Neil
* 4. The name, George Neville-Neil may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _TIMING_H_
#define _TIMING_H_
#ifdef TIME_WITH_SYS_TIME
#include <sys/time.h>
#include <time.h>
#else /* !TIME_WITH_SYS_TIME */
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#else /* !HAVE_SYS_TIME_H */
#include <time.h>
#endif /* !HAVE_SYS_TIME_H */
#endif /* !TIME_WITH_SYS_TIME */
static struct timeval aftertp, beforetp;
#define BEGINTIMING gettimeofday(&beforetp, NULL)
#define ENDTIMING gettimeofday(&aftertp, NULL); \
if(beforetp.tv_usec > aftertp.tv_usec) \
{ \
aftertp.tv_usec += 1000000; \
aftertp.tv_sec--; \
}
#define TIMINGUS (((aftertp.tv_sec - beforetp.tv_sec) * 1000000) + \
(aftertp.tv_usec - beforetp.tv_usec))
#define TIMINGMS (((aftertp.tv_sec - beforetp.tv_sec) * 1000) + \
((aftertp.tv_usec - beforetp.tv_usec) / 1000))
#define TIMINGS ((aftertp.tv_sec - beforetp.tv_sec) + \
(aftertp.tv_usec - beforetp.tv_usec) / 1000000)
#endif /* _TIMING_H_ */