hurd/hurd/resource.h

   1 /* Resource limits for the Hurd.
   2 Copyright (C) 1994, 1995 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 Library General Public License as
   7 published by the Free Software Foundation; either version 2 of the
   8 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 Library General Public License for more details.
  14
  15 You should have received a copy of the GNU Library General Public
  16 License along with the GNU C Library; see the file COPYING.LIB.  If
  17 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
  18 Cambridge, MA 02139, USA.  */
  19
  20 #ifndef _HURD_RESOURCE_H
  21 #define _HURD_RESOURCE_H
  22
  23 #include <sys/types.h>
  24 #include <sys/resource.h>
  25 #include <errno.h>
  26 #include <hurd/process.h>
  27
  28 /* This array contains the current resource limits for the process.  */
  29 extern struct rlimit _hurd_rlimits[RLIM_NLIMITS];
  30 extern struct mutex _hurd_rlimit_lock; /* Locks _hurd_rlimits.  */
  31
  32
  33 /* Helper function for getpriority and setpriority.  Maps FN over all the
  34    processes specified by WHICH and WHO.  PI is non-null if a
  35    proc_getprocinfo was already done; FN may use *PI arbitrarily, it is
  36    reset on the next call; PI_FLAGS is passed to proc_getprocinfo.  Returns
  37    FN's result the first time it returns nonzero.  If FN never returns
  38    nonzero, this returns zero.  */
  39 extern error_t _hurd_priority_which_map (enum __priority_which which, int who,
  40                                          error_t (*fn) (pid_t pid,
  41                                                         struct procinfo *pi),
  42                                          int pi_flags);
  43
  44 /* Convert between Mach priority values and the priority
  45    values used by getpriority, setpriority, and nice.  */
  46 #define MACH_PRIORITY_TO_NICE(prio) (2 * ((prio) - 12))
  47 #define NICE_TO_MACH_PRIORITY(nice) (12 + ((nice) / 2))
  48
  49
  50
  51
  52 #endif