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/* This is file GETRUSAG.C */

/*

** Copyright (C) 1991 DJ Delorie

**

** This file is distributed under the terms listed in the document

** "copying.dj".

** A copy of "copying.dj" should accompany this file; if not, a copy

** should be available from where this file was obtained.  This file

** may not be distributed without a verbatim copy of "copying.dj".

**

** This file is distributed WITHOUT ANY WARRANTY; without even the implied

** warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

*/

#include <sys/time.h>

#include <sys/resource.h>

static struct timeval old_time = {0,0};

int getrusage(int who, struct rusage *rusage)

{

  struct timeval now;

  bzero(rusage, sizeof(struct rusage));

  if (old_time.tv_sec == 0)

    gettimeofday(&old_time, 0);

  gettimeofday(&now, 0);

  rusage->ru_utime.tv_usec = now.tv_usec - old_time.tv_usec;

  rusage->ru_utime.tv_sec = now.tv_sec - old_time.tv_sec;

  if (rusage->ru_utime.tv_usec < 0)

  {

    rusage->ru_utime.tv_usec += 1000000;

    rusage->ru_utime.tv_sec -= 1;

  }

  return 0;

}