/* Copyright (C) 1995-2018 Free Software Foundation, Inc.

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This file is part of the GNU C Library.

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The GNU C Library is free software; you can redistribute it and/or

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modify it under the terms of the GNU Lesser General Public

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License as published by the Free Software Foundation; either

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version 2.1 of the License, or (at your option) any later version.

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The GNU C Library is distributed in the hope that it will be useful,

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but WITHOUT ANY WARRANTY; without even the implied warranty of

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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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Lesser General Public License for more details.

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You should have received a copy of the GNU Lesser General Public

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License along with the GNU C Library; if not, see

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<http://www.gnu.org/licenses/>. */

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#ifndef _SYS_SHM_H

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#define _SYS_SHM_H 1

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#include <features.h>

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#define __need_size_t

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#include <stddef.h>

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/* Get common definition of System V style IPC. */

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#include <sys/ipc.h>

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/* Get system dependent definition of `struct shmid_ds' and more. */

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#include <bits/shm.h>

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/* Define types required by the standard. */

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#include <bits/types/time_t.h>

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#ifdef __USE_XOPEN

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# ifndef __pid_t_defined

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typedef __pid_t pid_t;

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# define __pid_t_defined

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# endif

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#endif /* X/Open */

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__BEGIN_DECLS

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/* The following System V style IPC functions implement a shared memory

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facility. The definition is found in XPG4.2. */

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/* Shared memory control operation. */

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extern int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf) __THROW;

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/* Get shared memory segment. */

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extern int shmget (key_t __key, size_t __size, int __shmflg) __THROW;

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/* Attach shared memory segment. */

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extern void *shmat (int __shmid, const void *__shmaddr, int __shmflg)

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__THROW;

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/* Detach shared memory segment. */

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extern int shmdt (const void *__shmaddr) __THROW;

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__END_DECLS

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#endif /* sys/shm.h */

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