1 /* Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
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. */
27 /* Get common definition of System V style IPC. */
30 /* Get system dependent definition of `struct shmid_ds' and more. */
34 /* Segment low boundary address multiple. */
35 #define SHMLBA (__getpagesize ())
36 extern int __getpagesize (void) __THROW
;
39 /* The following System V style IPC functions implement a shared memory
40 facility. The definition is found in XPG4.2. */
44 /* Shared memory control operation. */
45 extern int shmctl (int __shmid
, int __cmd
, struct shmid_ds
*__buf
) __THROW
;
47 /* Get shared memory segment. */
48 extern int shmget (key_t __key
, size_t __size
, int __shmflg
) __THROW
;
50 /* Attach shared memory segment. */
51 extern void *shmat (int __shmid
, __const
void *__shmaddr
, int __shmflg
)
54 /* Detach shared memory segment. */
55 extern int shmdt (__const
void *__shmaddr
) __THROW
;
59 #endif /* sys/shm.h */