From 04bc82edc59fed897b7f38e5f68a76402f087dfb Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Sat, 7 Oct 2000 01:53:34 +0000 Subject: Add in support for shm/ipc. --- include/sys/shm.h | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 include/sys/shm.h (limited to 'include/sys/shm.h') diff --git a/include/sys/shm.h b/include/sys/shm.h new file mode 100644 index 000000000..09e21d60e --- /dev/null +++ b/include/sys/shm.h @@ -0,0 +1,56 @@ +/* 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 + +#include /* for `getpagesize' declaration */ +#include + +/* Get common definition of System V style IPC. */ +#include + +/* Get system dependent definition of `struct shmid_ds' and more. */ +#include + + +/* 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 */ -- cgit v1.2.3