1 /* Minimum guaranteed maximum values for system limits. Linux/Alpha version.
2 Copyright (C) 1993-1998,2000,2002,2003,2004 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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 see <http://www.gnu.org/licenses/>. */
19 /* The kernel header pollutes the namespace with the NR_OPEN symbol
20 and defines LINK_MAX although filesystems have different maxima. A
21 similar thing is true for OPEN_MAX: the limit can be changed at
22 runtime and therefore the macro must not be defined. Remove this
23 after including the header if necessary. */
25 # define __undef_NR_OPEN
28 # define __undef_LINK_MAX
31 # define __undef_OPEN_MAX
34 /* The kernel sources contain a file with all the needed information. */
35 #include <linux/limits.h>
37 /* Have to remove NR_OPEN? */
38 #ifdef __undef_NR_OPEN
40 # undef __undef_NR_OPEN
42 /* Have to remove LINK_MAX? */
43 #ifdef __undef_LINK_MAX
45 # undef __undef_LINK_MAX
47 /* Have to remove OPEN_MAX? */
48 #ifdef __undef_OPEN_MAX
50 # undef __undef_OPEN_MAX
53 /* The number of data keys per process. */
54 #define _POSIX_THREAD_KEYS_MAX 128
55 /* This is the value this implementation supports. */
56 #define PTHREAD_KEYS_MAX 1024
58 /* Controlling the iterations of destructors for thread-specific data. */
59 #define _POSIX_THREAD_DESTRUCTOR_ITERATIONS 4
60 /* Number of iterations this implementation does. */
61 #define PTHREAD_DESTRUCTOR_ITERATIONS _POSIX_THREAD_DESTRUCTOR_ITERATIONS
63 /* The number of threads per process. */
64 #define _POSIX_THREAD_THREADS_MAX 64
65 /* We have no predefined limit on the number of threads. */
66 #undef PTHREAD_THREADS_MAX
68 /* Maximum amount by which a process can descrease its asynchronous I/O
70 #define AIO_PRIO_DELTA_MAX 20
72 /* Minimum size for a thread. We are free to choose a reasonable value. */
73 #define PTHREAD_STACK_MIN 24576
75 /* Maximum number of timer expiration overruns. */
76 #define DELAYTIMER_MAX 2147483647
78 /* Maximum tty name length. */
79 #define TTY_NAME_MAX 32
81 /* Maximum login name length. This is arbitrary. */
82 #define LOGIN_NAME_MAX 256
84 /* Maximum host name length. */
85 #define HOST_NAME_MAX 64
87 /* Maximum message queue priority level. */
88 #define MQ_PRIO_MAX 32768
90 /* Maximum value the semaphore can have. */
91 #define SEM_VALUE_MAX (2147483647)