1: /* Copyright (C) 1991, 1997, 1998 Free Software Foundation, Inc.
    2:    This file is part of the GNU C Library.
    3: 
    4:    The GNU C Library is free software; you can redistribute it and/or
    5:    modify it under the terms of the GNU Lesser General Public
    6:    License as published by the Free Software Foundation; either
    7:    version 2.1 of the License, or (at your option) any later version.
    8: 
    9:    The GNU C Library is distributed in the hope that it will be useful,
   10:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   11:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   12:    Lesser General Public License for more details.
   13: 
   14:    You should have received a copy of the GNU Lesser General Public
   15:    License along with the GNU C Library; if not, write to the Free
   16:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   17:    02111-1307 USA.  */
   18: 
   19: #include <stddef.h>
   20: #include <sys/vtimes.h>
   21: #include <sys/resource.h>
   22: 
   23: /* Return the number of 1/VTIMES_UNITS_PER_SECOND-second
   24:    units in the `struct timeval' TV.  */
   25: #define TIMEVAL_TO_VTIMES(tv) \
   26:   ((tv.tv_sec * VTIMES_UNITS_PER_SECOND) + \
   27:    (tv.tv_usec * VTIMES_UNITS_PER_SECOND / 1000000))
   28: 
   29: /* If VT is not NULL, write statistics for WHO into *VT.
   30:    Return 0 for success, -1 for failure.  */
   31: static int
   32: vtimes_one (struct vtimes *vt, enum __rusage_who who)
   33: {
   34:   if (vt != NULL)
   35:     {
   36:       struct rusage usage;
   37: 
   38:       if (__getrusage (who, &usage) < 0)
   39:         return -1;
   40: 
   41:       vt->vm_utime = TIMEVAL_TO_VTIMES (usage.ru_utime);
   42:       vt->vm_stime = TIMEVAL_TO_VTIMES (usage.ru_stime);
   43:       vt->vm_idsrss = usage.ru_idrss + usage.ru_isrss;
   44:       vt->vm_majflt = usage.ru_majflt;
   45:       vt->vm_minflt = usage.ru_minflt;
   46:       vt->vm_nswap = usage.ru_nswap;
   47:       vt->vm_inblk = usage.ru_inblock;
   48:       vt->vm_oublk = usage.ru_oublock;
   49:     }
   50:   return 0;
   51: }
   52: 
   53: /* If CURRENT is not NULL, write statistics for the current process into
   54:    *CURRENT.  If CHILD is not NULL, write statistics for all terminated child
   55:    processes into *CHILD.  Returns 0 for success, -1 for failure.  */
   56: int
   57: vtimes (current, child)
   58:      struct vtimes *current;
   59:      struct vtimes *child;
   60: {
   61:   if (vtimes_one (current, RUSAGE_SELF) < 0
   62:       || vtimes_one (child, RUSAGE_CHILDREN) < 0)
   63:     return -1;
   64:   return 0;
   65: }