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/* timing routines
*
* PCx 1.1 11/97
*
* Authors: Joe Czyzyk, Sanjay Mehrotra, Michael Wagner, Steve Wright.
*
* (C) 1996 University of Chicago. See COPYRIGHT in main directory.
*/
/*
#define NO_TIMING
*/
#ifdef NO_TIMING
GetTime(User, System)
double *User, *System;
{
*User = 0.0;
*System = 0.0;
}
#else /* perform timing */
#ifndef solaris /* non-Solaris machines */
#include <stdio.h>
#include <sys/time.h> /* for getrusage */
#include <sys/resource.h>
#if defined(hpux) || defined(__hpux)
#include <sys/syscall.h>
#define getrusage(a, b) syscall(SYS_GETRUSAGE, a, b)
#endif
int GetTime(User, System)
double *User, *System;
{
struct rusage Time;
if (getrusage(RUSAGE_SELF, &Time))
printf("Error getting time.\n");
*User = Time.ru_utime.tv_sec + Time.ru_utime.tv_usec / 1000000.0;
*System = Time.ru_stime.tv_sec + Time.ru_stime.tv_usec / 1000000.0;
return 0;
}
#else
/* timer routine for solaris */
#include <stdio.h>
#include <sys/resource.h>
#include <sys/types.h>
#include <sys/signal.h>
#include <sys/fault.h>
#include <sys/syscall.h>
#include <sys/stat.h>
#include <fcntl.h>
/*#ifndef RUSAGE_SELF dm*/
#include <sys/procfs.h>
/*#endif dm*/
GetTime(User, System)
double *User, *System;
{
int fd;
char proc[50];
prusage_t prusage;
sprintf(proc,"/proc/%d", getpid());
if ((fd = open(proc,O_RDONLY)) == -1)
{
printf("Error opening process file.\n");
*User = 0.0;
*System = 0.0;
close(fd);
return;
}
if (ioctl(fd, PIOCUSAGE, &prusage) == -1) {
printf("Error performing ioctl.");
*User = 0.0;
*System = 0.0;
return;
}
*User = prusage.pr_utime.tv_sec + prusage.pr_utime.tv_nsec / 1.0e9;
*System = prusage.pr_stime.tv_sec + prusage.pr_stime.tv_nsec / 1.0e9;
close(fd);
}
#endif /* solaris */
#endif /* NO_TIMING */
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