resource/sys/vtimes.h

   1 /* Copyright (C) 1991, 1992, 1996, 1999 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 #ifndef _SYS_VTIMES_H
  20 #define _SYS_VTIMES_H   1
  21
  22 #include <features.h>
  23
  24 __BEGIN_DECLS
  25
  26 /* This interface is obsolete; use `getrusage' instead.  */
  27
  28 /* Granularity of the `vm_utime' and `vm_stime' fields of a `struct vtimes'.
  29    (This is the frequency of the machine's power supply, in Hz.)  */
  30 #define VTIMES_UNITS_PER_SECOND 60
  31
  32 struct vtimes
  33 {
  34   /* User time used in units of 1/VTIMES_UNITS_PER_SECOND seconds.  */
  35   int vm_utime;
  36   /* System time used in units of 1/VTIMES_UNITS_PER_SECOND seconds.  */
  37   int vm_stime;
  38
  39   /* Amount of data and stack memory used (kilobyte-seconds).  */
  40   unsigned int vm_idsrss;
  41   /* Amount of text memory used (kilobyte-seconds).  */
  42   unsigned int vm_ixrss;
  43   /* Maximum resident set size (text, data, and stack) (kilobytes).  */
  44   int vm_maxrss;
  45
  46   /* Number of hard page faults (i.e. those that required I/O).  */
  47   int vm_majflt;
  48   /* Number of soft page faults (i.e. those serviced by reclaiming
  49      a page from the list of pages awaiting reallocation.  */
  50   int vm_minflt;
  51
  52   /* Number of times a process was swapped out of physical memory.  */
  53   int vm_nswap;
  54
  55   /* Number of input operations via the file system.  Note: This
  56      and `ru_oublock' do not include operations with the cache.  */
  57   int vm_inblk;
  58   /* Number of output operations via the file system.  */
  59   int vm_oublk;
  60 };
  61
  62 /* If CURRENT is not NULL, write statistics for the current process into
  63    *CURRENT.  If CHILD is not NULL, write statistics for all terminated child
  64    processes into *CHILD.  Returns 0 for success, -1 for failure.  */
  65 extern int vtimes (struct vtimes * __current, struct vtimes * __child) __THROW;
  66
  67 __END_DECLS
  68
  69 #endif /* sys/vtimes.h  */