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0ed99ce4 1/* Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc.
8a4b65b4 2 This file is part of the GNU C Library.
60478656 3
8a4b65b4 4 The GNU C Library is free software; you can redistribute it and/or
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5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
60478656 8
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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
41bdb6e2 12 Lesser General Public License for more details.
60478656 13
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14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
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18
19#ifndef _SYS_SHM_H
8a4b65b4 20#define _SYS_SHM_H 1
5107cf1d 21
60478656 22#include <features.h>
8a4b65b4 23
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24#define __need_size_t
25#include <stddef.h>
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26
27/* Get common definition of System V style IPC. */
28#include <sys/ipc.h>
29
30/* Get system dependent definition of `struct shmid_ds' and more. */
5107cf1d 31#include <bits/shm.h>
60478656 32
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33/* Define types required by the standard. */
34#define __need_time_t
35#include <time.h>
36
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37#ifdef __USE_XOPEN
38# ifndef __pid_t_defined
39typedef __pid_t pid_t;
40# define __pid_t_defined
41# endif
42#endif /* X/Open */
60478656 43
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44__BEGIN_DECLS
45
60478656 46/* Segment low boundary address multiple. */
50304ef0 47#define SHMLBA (__getpagesize ())
219f2381 48extern int __getpagesize (void) __THROW __attribute__ ((__const__));
219aa9e9 49
60478656 50
60478656 51/* The following System V style IPC functions implement a shared memory
3e5f5557 52 facility. The definition is found in XPG4.2. */
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53
54/* Shared memory control operation. */
c1422e5b 55extern int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf) __THROW;
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56
57/* Get shared memory segment. */
c1422e5b 58extern int shmget (key_t __key, size_t __size, int __shmflg) __THROW;
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59
60/* Attach shared memory segment. */
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61extern void *shmat (int __shmid, __const void *__shmaddr, int __shmflg)
62 __THROW;
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63
64/* Detach shared memory segment. */
c1422e5b 65extern int shmdt (__const void *__shmaddr) __THROW;
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66
67__END_DECLS
68
5107cf1d 69#endif /* sys/shm.h */