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  1. /* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
  2. #include <time.h>
  3. #include <errno.h>
  4. #include <string.h>
  5. #include <sys/resource.h>
  6.  
  7. int getrusage(int _who, struct rusage *_rusage)
  8. {
  9.  clock_t q;
  10.  if (_rusage == 0)
  11.  {
  12.   errno = EFAULT;
  13.   return -1;
  14.  }
  15.  if (_who != RUSAGE_SELF && _who != RUSAGE_CHILDREN)
  16.  {
  17.   errno = EINVAL;
  18.   return -1;
  19.  }
  20.  memset(_rusage, 0, sizeof(struct rusage));
  21.  q = clock();
  22.  _rusage->ru_utime.tv_sec = q / CLOCKS_PER_SEC;
  23.  _rusage->ru_utime.tv_usec = q % CLOCKS_PER_SEC * 1000000 / CLOCKS_PER_SEC;
  24.  return 0;
  25. }
  26.