src/graphviz/lib/common/timing.c
2622c288
 /* $Id: timing.c,v 1.9 2011/01/25 16:30:48 ellson Exp $ $Revision: 1.9 $ */
 /* vim:set shiftwidth=4 ts=8: */
 
 /*************************************************************************
  * Copyright (c) 2011 AT&T Intellectual Property 
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors: See CVS logs. Details at http://www.graphviz.org/
  *************************************************************************/
 
 #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;
 }