projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 2566e5f3 UD |
1 | /* Copyright (C) 1995, 1996, 1997, 2000, 2002, 2004 |
| 2 | Free Software Foundation, Inc. | |
| 76d81302 AJ |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, write to the Free | |
| 17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 18 | 02111-1307 USA. */ | |
| 19 | ||
| 20 | #ifndef _SYS_SHM_H | |
| 21 | # error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." | |
| 22 | #endif | |
| 23 | ||
| 24 | #include <bits/types.h> | |
| 25 | ||
| 26 | /* Permission flag for shmget. */ | |
| 27 | #define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */ | |
| 28 | #define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */ | |
| 29 | ||
| 30 | /* Flags for `shmat'. */ | |
| 31 | #define SHM_RDONLY 010000 /* attach read-only else read-write */ | |
| 32 | #define SHM_RND 020000 /* round attach address to SHMLBA */ | |
| 33 | #define SHM_REMAP 040000 /* take-over region on attach */ | |
| 34 | ||
| 35 | /* Commands for `shmctl'. */ | |
| 36 | #define SHM_LOCK 11 /* lock segment (root only) */ | |
| 37 | #define SHM_UNLOCK 12 /* unlock segment (root only) */ | |
| 38 | ||
| 2566e5f3 UD |
39 | __BEGIN_DECLS |
| 40 | ||
| ed5294d5 UD |
41 | /* Segment low boundary address multiple. */ |
| 42 | #define SHMLBA (__getpagesize ()) | |
| 43 | extern int __getpagesize (void) __THROW __attribute__ ((__const__)); | |
| 44 | ||
| 76d81302 AJ |
45 | |
| 46 | /* Type to count number of attaches. */ | |
| 47 | typedef unsigned long int shmatt_t; | |
| 48 | ||
| 49 | /* Data structure describing a set of semaphores. */ | |
| 50 | struct shmid_ds | |
| 51 | { | |
| 52 | struct ipc_perm shm_perm; /* operation permission struct */ | |
| 53 | size_t shm_segsz; /* size of segment in bytes */ | |
| 54 | __time_t shm_atime; /* time of last shmat() */ | |
| 55 | #if __WORDSIZE == 32 | |
| 56 | unsigned long int __unused1; | |
| 57 | #endif | |
| 58 | __time_t shm_dtime; /* time of last shmdt() */ | |
| 59 | #if __WORDSIZE == 32 | |
| 60 | unsigned long int __unused2; | |
| 61 | #endif | |
| 62 | __time_t shm_ctime; /* time of last change by shmctl() */ | |
| 63 | #if __WORDSIZE == 32 | |
| 64 | unsigned long int __unused3; | |
| 65 | #endif | |
| 66 | __pid_t shm_cpid; /* pid of creator */ | |
| 67 | __pid_t shm_lpid; /* pid of last shmop */ | |
| 68 | shmatt_t shm_nattch; /* number of current attaches */ | |
| 69 | unsigned long int __unused4; | |
| 70 | unsigned long int __unused5; | |
| 71 | }; | |
| 72 | ||
| 73 | #ifdef __USE_MISC | |
| 74 | ||
| 75 | /* ipcs ctl commands */ | |
| 76 | # define SHM_STAT 13 | |
| 77 | # define SHM_INFO 14 | |
| 78 | ||
| 79 | /* shm_mode upper byte flags */ | |
| 80 | # define SHM_DEST 01000 /* segment will be destroyed on last detach */ | |
| 81 | # define SHM_LOCKED 02000 /* segment will not be swapped */ | |
| 48f936a2 | 82 | # define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */ |
| 2b7e8613 | 83 | # define SHM_NORESERVE 010000 /* don't check for reservations */ |
| 76d81302 AJ |
84 | |
| 85 | struct shminfo | |
| 86 | { | |
| 87 | unsigned long int shmmax; | |
| 88 | unsigned long int shmmin; | |
| 89 | unsigned long int shmmni; | |
| 90 | unsigned long int shmseg; | |
| 91 | unsigned long int shmall; | |
| 92 | unsigned long int __unused1; | |
| 93 | unsigned long int __unused2; | |
| 94 | unsigned long int __unused3; | |
| 95 | unsigned long int __unused4; | |
| 96 | }; | |
| 97 | ||
| 98 | struct shm_info | |
| 99 | { | |
| 100 | int used_ids; | |
| 101 | unsigned long int shm_tot; /* total allocated shm */ | |
| 102 | unsigned long int shm_rss; /* total resident shm */ | |
| 103 | unsigned long int shm_swp; /* total swapped shm */ | |
| 104 | unsigned long int swap_attempts; | |
| 105 | unsigned long int swap_successes; | |
| 106 | }; | |
| 107 | ||
| 108 | #endif /* __USE_MISC */ | |
| 2566e5f3 UD |
109 | |
| 110 | __END_DECLS |