mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-16 01:50:11 +00:00
110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
/* Copyright (C) 2001, 2002, 2004 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#ifndef _SYS_SHM_H
|
|
# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead."
|
|
#endif
|
|
|
|
#include <bits/types.h>
|
|
#include <bits/wordsize.h>
|
|
|
|
/* Permission flag for shmget. */
|
|
#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */
|
|
#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */
|
|
|
|
/* Flags for `shmat'. */
|
|
#define SHM_RDONLY 010000 /* attach read-only else read-write */
|
|
#define SHM_RND 020000 /* round attach address to SHMLBA */
|
|
#define SHM_REMAP 040000 /* take-over region on attach */
|
|
|
|
/* Commands for `shmctl'. */
|
|
#define SHM_LOCK 11 /* lock segment (root only) */
|
|
#define SHM_UNLOCK 12 /* unlock segment (root only) */
|
|
|
|
__BEGIN_DECLS
|
|
|
|
/* Segment low boundary address multiple. */
|
|
#define SHMLBA (__getpagesize ())
|
|
extern int __getpagesize (void) __THROW __attribute__ ((__const__));
|
|
|
|
|
|
/* Type to count number of attaches. */
|
|
typedef unsigned long int shmatt_t;
|
|
|
|
/* Data structure describing a set of semaphores. */
|
|
struct shmid_ds
|
|
{
|
|
struct ipc_perm shm_perm; /* operation permission struct */
|
|
size_t shm_segsz; /* size of segment in bytes */
|
|
__time_t shm_atime; /* time of last shmat() */
|
|
#if __WORDSIZE != 64
|
|
unsigned long int __unused1;
|
|
#endif
|
|
__time_t shm_dtime; /* time of last shmdt() */
|
|
#if __WORDSIZE != 64
|
|
unsigned long int __unused2;
|
|
#endif
|
|
__time_t shm_ctime; /* time of last change by shmctl() */
|
|
#if __WORDSIZE != 64
|
|
unsigned long int __unused3;
|
|
#endif
|
|
__pid_t shm_cpid; /* pid of creator */
|
|
__pid_t shm_lpid; /* pid of last shmop */
|
|
shmatt_t shm_nattch; /* number of current attaches */
|
|
unsigned long int __unused4;
|
|
unsigned long int __unused5;
|
|
};
|
|
|
|
#ifdef __USE_MISC
|
|
|
|
/* ipcs ctl commands */
|
|
# define SHM_STAT 13
|
|
# define SHM_INFO 14
|
|
|
|
/* shm_mode upper byte flags */
|
|
# define SHM_DEST 01000 /* segment will be destroyed on last detach */
|
|
# define SHM_LOCKED 02000 /* segment will not be swapped */
|
|
# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */
|
|
|
|
struct shminfo
|
|
{
|
|
unsigned long int shmmax;
|
|
unsigned long int shmmin;
|
|
unsigned long int shmmni;
|
|
unsigned long int shmseg;
|
|
unsigned long int shmall;
|
|
unsigned long int __unused1;
|
|
unsigned long int __unused2;
|
|
unsigned long int __unused3;
|
|
unsigned long int __unused4;
|
|
};
|
|
|
|
struct shm_info
|
|
{
|
|
int used_ids;
|
|
unsigned long int shm_tot; /* total allocated shm */
|
|
unsigned long int shm_rss; /* total resident shm */
|
|
unsigned long int shm_swp; /* total swapped shm */
|
|
unsigned long int swap_attempts;
|
|
unsigned long int swap_successes;
|
|
};
|
|
|
|
#endif /* __USE_MISC */
|
|
|
|
__END_DECLS
|