nptl/sysdeps/unix/sysv/linux/alpha/bits/local_lim.h

   1 /* Minimum guaranteed maximum values for system limits.  Linux/Alpha version.
   2    Copyright (C) 1993-1998,2000,2002-2004,2008 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 not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 /* The kernel header pollutes the namespace with the NR_OPEN symbol
  21    and defines LINK_MAX although filesystems have different maxima.  A
  22    similar thing is true for OPEN_MAX: the limit can be changed at
  23    runtime and therefore the macro must not be defined.  Remove this
  24    after including the header if necessary.  */
  25 #ifndef NR_OPEN
  26 # define __undef_NR_OPEN
  27 #endif
  28 #ifndef LINK_MAX
  29 # define __undef_LINK_MAX
  30 #endif
  31 #ifndef OPEN_MAX
  32 # define __undef_OPEN_MAX
  33 #endif
  34 #ifndef ARG_MAX
  35 # define __undef_ARG_MAX
  36 #endif
  37
  38 /* The kernel sources contain a file with all the needed information.  */
  39 #include <linux/limits.h>
  40
  41 /* Have to remove NR_OPEN?  */
  42 #ifdef __undef_NR_OPEN
  43 # undef NR_OPEN
  44 # undef __undef_NR_OPEN
  45 #endif
  46 /* Have to remove LINK_MAX?  */
  47 #ifdef __undef_LINK_MAX
  48 # undef LINK_MAX
  49 # undef __undef_LINK_MAX
  50 #endif
  51 /* Have to remove OPEN_MAX?  */
  52 #ifdef __undef_OPEN_MAX
  53 # undef OPEN_MAX
  54 # undef __undef_OPEN_MAX
  55 #endif
  56 /* Have to remove ARG_MAX?  */
  57 #ifdef __undef_ARG_MAX
  58 # undef ARG_MAX
  59 # undef __undef_ARG_MAX
  60 #endif
  61
  62 /* The number of data keys per process.  */
  63 #define _POSIX_THREAD_KEYS_MAX  128
  64 /* This is the value this implementation supports.  */
  65 #define PTHREAD_KEYS_MAX        1024
  66
  67 /* Controlling the iterations of destructors for thread-specific data.  */
  68 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS     4
  69 /* Number of iterations this implementation does.  */
  70 #define PTHREAD_DESTRUCTOR_ITERATIONS   _POSIX_THREAD_DESTRUCTOR_ITERATIONS
  71
  72 /* The number of threads per process.  */
  73 #define _POSIX_THREAD_THREADS_MAX       64
  74 /* We have no predefined limit on the number of threads.  */
  75 #undef PTHREAD_THREADS_MAX
  76
  77 /* Maximum amount by which a process can descrease its asynchronous I/O
  78    priority level.  */
  79 #define AIO_PRIO_DELTA_MAX      20
  80
  81 /* Minimum size for a thread.  We are free to choose a reasonable value.  */
  82 #define PTHREAD_STACK_MIN       24576
  83
  84 /* Maximum number of timer expiration overruns.  */
  85 #define DELAYTIMER_MAX  2147483647
  86
  87 /* Maximum tty name length.  */
  88 #define TTY_NAME_MAX            32
  89
  90 /* Maximum login name length.  This is arbitrary.  */
  91 #define LOGIN_NAME_MAX          256
  92
  93 /* Maximum host name length.  */
  94 #define HOST_NAME_MAX           64
  95
  96 /* Maximum message queue priority level.  */
  97 #define MQ_PRIO_MAX             32768
  98
  99 /* Maximum value the semaphore can have.  */
 100 #define SEM_VALUE_MAX   (2147483647)