resource/sys/resource.h

   1 /* Copyright (C) 1992, 1994, 1996, 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 Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    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    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 #ifndef _SYS_RESOURCE_H
  20 #define _SYS_RESOURCE_H 1
  21
  22 #include <features.h>
  23
  24 /* Get the system-dependent definitions of structures and bit values.  */
  25 #include <bits/resource.h>
  26
  27 __BEGIN_DECLS
  28
  29 /* Put the soft and hard limits for RESOURCE in *RLIMITS.
  30    Returns 0 if successful, -1 if not (and sets errno).  */
  31 #ifndef __USE_FILE_OFFSET64
  32 extern int getrlimit __P ((enum __rlimit_resource __resource,
  33                            struct rlimit *__rlimits));
  34 #else
  35 # ifdef __REDIRECT
  36 extern int __REDIRECT (getrlimit, __P ((enum __rlimit_resource __resource,
  37                                         struct rlimit *__rlimits)),
  38                        getrlimit64);
  39 # else
  40 #  define getrlimit getrlimit64
  41 # endif
  42 #endif
  43 #ifdef __USE_LARGEFILE64
  44 extern int getrlimit64 __P ((enum __rlimit_resource __resource,
  45                              struct rlimit64 *__rlimits));
  46 #endif
  47
  48 /* Set the soft and hard limits for RESOURCE to *RLIMITS.
  49    Only the super-user can increase hard limits.
  50    Return 0 if successful, -1 if not (and sets errno).  */
  51 #ifndef __USE_FILE_OFFSET64
  52 extern int setrlimit __P ((enum __rlimit_resource __resource,
  53                            __const struct rlimit *__rlimits));
  54 #else
  55 # ifdef __REDIRECT
  56 extern int __REDIRECT (setrlimit, __P ((enum __rlimit_resource __resource,
  57                                         __const struct rlimit *__rlimits)),
  58                        setrlimit64);
  59 # else
  60 #  define setrlimit setrlimit64
  61 # endif
  62 #endif
  63 #ifdef __USE_LARGEFILE64
  64 extern int setrlimit64 __P ((enum __rlimit_resource __resource,
  65                              __const struct rlimit64 *__rlimits));
  66 #endif
  67
  68 /* Return resource usage information on process indicated by WHO
  69    and put it in *USAGE.  Returns 0 for success, -1 for failure.  */
  70 extern int getrusage __P ((enum __rusage_who __who, struct rusage *__usage));
  71
  72 /* Return the highest priority of any process specified by WHICH and WHO
  73    (see above); if WHO is zero, the current process, process group, or user
  74    (as specified by WHO) is used.  A lower priority number means higher
  75    priority.  Priorities range from PRIO_MIN to PRIO_MAX (above).  */
  76 extern int getpriority __P ((enum __priority_which __which, int __who));
  77
  78 /* Set the priority of all processes specified by WHICH and WHO (see above)
  79    to PRIO.  Returns 0 on success, -1 on errors.  */
  80 extern int setpriority __P ((enum __priority_which __which, int __who,
  81                              int __prio));
  82
  83 __END_DECLS
  84
  85 #endif  /* sys/resource.h  */