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/* $Id: timing.c,v 1.8 2009/06/03 01:10:52 ellson Exp $ $Revision: 1.8 $ */
/* vim:set shiftwidth=4 ts=8: */
/**********************************************************
* This software is part of the graphviz package *
* http://www.graphviz.org/ *
* *
* Copyright (c) 1994-2004 AT&T Corp. *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Corp. *
* *
* Information and Software Systems Research *
* AT&T Research, Florham Park NJ *
**********************************************************/
#ifndef WIN32
#include <unistd.h>
#include <sys/types.h>
#include <sys/times.h>
#include <sys/param.h>
#ifndef HZ
#define HZ 60
#endif
typedef struct tms mytime_t;
#define GET_TIME(S) times(&(S))
#define DIFF_IN_SECS(S,T) ((S.tms_utime + S.tms_stime - T.tms_utime - T.tms_stime)/(double)HZ)
#else
#include <time.h>
#include "render.h"
#include "utils.h"
typedef clock_t mytime_t;
#define GET_TIME(S) S = clock()
#define DIFF_IN_SECS(S,T) ((S - T) / (double)CLOCKS_PER_SEC)
#endif
static mytime_t T;
void start_timer(void)
{
GET_TIME(T);
}
double elapsed_sec(void)
{
mytime_t S;
double rv;
GET_TIME(S);
rv = DIFF_IN_SECS(S, T);
return rv;
}
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