sysvipc/sys/shm.h

   1 /* Copyright (C) 1995-1999, 2000, 2002, 2012 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   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.
   8
   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    Lesser General Public License for more details.
  13
  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.  */
  18
  19 #ifndef _SYS_SHM_H
  20 #define _SYS_SHM_H      1
  21
  22 #include <features.h>
  23
  24 #define __need_size_t
  25 #include <stddef.h>
  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.  */
  31 #include <bits/shm.h>
  32
  33 /* Define types required by the standard.  */
  34 #define __need_time_t
  35 #include <time.h>
  36
  37 #ifdef __USE_XOPEN
  38 # ifndef __pid_t_defined
  39 typedef __pid_t pid_t;
  40 #  define __pid_t_defined
  41 # endif
  42 #endif  /* X/Open */
  43
  44
  45 __BEGIN_DECLS
  46
  47 /* The following System V style IPC functions implement a shared memory
  48    facility.  The definition is found in XPG4.2.  */
  49
  50 /* Shared memory control operation.  */
  51 extern int shmctl (int __shmid, int __cmd, struct shmid_ds *__buf) __THROW;
  52
  53 /* Get shared memory segment.  */
  54 extern int shmget (key_t __key, size_t __size, int __shmflg) __THROW;
  55
  56 /* Attach shared memory segment.  */
  57 extern void *shmat (int __shmid, const void *__shmaddr, int __shmflg)
  58      __THROW;
  59
  60 /* Detach shared memory segment.  */
  61 extern int shmdt (const void *__shmaddr) __THROW;
  62
  63 __END_DECLS
  64
  65 #endif /* sys/shm.h */