diff options
author | "Jan-Benedict Glaw" <jbglaw@lug-owl.de> | 2006-01-27 21:20:28 +0000 |
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committer | "Jan-Benedict Glaw" <jbglaw@lug-owl.de> | 2006-01-27 21:20:28 +0000 |
commit | 0934f142036f12292711770d353f1c01ab718db7 (patch) | |
tree | bad0873c1bbd8c81ec70180d6ca4e4006d01fa62 /libc/sysdeps/linux/vax/bits/shm.h | |
parent | 9f341620c14e959d333fb26d8ec5e9f9dc5209d6 (diff) |
First round of VAX patches. This isn't complete right now, there are for
sure still bugs (properly hidden, of course), a libm is completely missing
(I've got one that implements some basic stuff, but that's really not
ready for checking in...)
I've also got a list of other things that need touch-ups, but that's mostly
minor stuff that'll be done during the next days.
Diffstat (limited to 'libc/sysdeps/linux/vax/bits/shm.h')
-rw-r--r-- | libc/sysdeps/linux/vax/bits/shm.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/vax/bits/shm.h b/libc/sysdeps/linux/vax/bits/shm.h new file mode 100644 index 000000000..191709f0e --- /dev/null +++ b/libc/sysdeps/linux/vax/bits/shm.h @@ -0,0 +1,88 @@ +/* Copyright (C) 1995, 1996, 1997 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 +# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." +#endif + +#include <sys/types.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__)); + +/* Data structure describing a set of semaphores. */ +struct shmid_ds + { + struct ipc_perm shm_perm; /* operation permission struct */ + int shm_segsz; /* size of segment in bytes */ + __time_t shm_atime; /* time of last shmat() */ + __time_t shm_dtime; /* time of last shmdt() */ + __time_t shm_ctime; /* time of last change by shmctl() */ + __ipc_pid_t shm_cpid; /* pid of creator */ + __ipc_pid_t shm_lpid; /* pid of last shmop */ + unsigned short int shm_nattch; /* number of current attaches */ + unsigned short int __shm_npages; /* size of segment (pages) */ + unsigned long int *__shm_pages; /* array of ptrs to frames -> SHMMAX */ + struct vm_area_struct *__attaches; /* descriptors for attaches */ + }; + +#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 */ + +struct shminfo + { + int shmmax; + int shmmin; + int shmmni; + int shmseg; + int shmall; + }; + +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 */ |