sysdeps/unix/get_child_max.c

   1 /* Get POSIX {CHILD_MAX} run-time limit value.  Unix version.
   2    Copyright (C) 2006 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <limits.h>
  21 #include <sys/sysinfo.h>
  22 #include <sys/resource.h>
  23
  24 #ifndef CHILD_MAX
  25 long int
  26 __get_child_max (void)
  27 {
  28 # ifdef RLIMIT_NPROC
  29   struct rlimit limit;
  30   if (__getrlimit (RLIMIT_NPROC, &limit) == 0
  31       && limit.rlim_cur != RLIM_INFINITY)
  32     return limit.rlim_cur;
  33 # endif
  34
  35   return -1;
  36 }
  37 #endif