/* Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef _SYS_SHM_H #define _SYS_SHM_H 1 #include <features.h> #include <unistd.h> /* for `getpagesize' declaration */ #include <sys/types.h> /* Get common definition of System V style IPC. */ #include <sys/ipc.h> /* Get system dependent definition of `struct shmid_ds' and more. */ #include <bits/shm.h> /* Segment low boundary address multiple. */ #define SHMLBA (getpagesize ()) /* The following System V style IPC functions implement a shared memory facility. The definition is found in XPG4.2. */ __BEGIN_DECLS /* Shared memory control operation. */ extern int shmctl __P ((int __shmid, int __cmd, struct shmid_ds *__buf)); /* Get shared memory segment. */ extern int shmget __P ((key_t __key, size_t __size, int __shmflg)); /* Attach shared memory segment. */ extern void *shmat __P ((int __shmid, __const void *__shmaddr, int __shmflg)); /* Detach shared memory segment. */ extern int shmdt __P ((__const void *__shmaddr)); __END_DECLS #endif /* sys/shm.h */