[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / hppa / bits / shm.h

/* Copyright (C) 1995-2017 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, see
   <http://www.gnu.org/licenses/>.  */

#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 */
#define SHM_EXEC	0100000		/* execution access */

/* Commands for `shmctl'.  */
#define SHM_LOCK	11		/* lock segment (root only) */
#define SHM_UNLOCK	12		/* unlock segment (root only) */

/* Segment low boundary address multiple.  */
#define SHMLBA 0x00400000		/* address needs to be 4 Mb aligned */

/* Type to count number of attaches.  */
typedef unsigned long int shmatt_t;

/* Data structure describing a shared memory segment.  */
struct shmid_ds
  {
    struct ipc_perm shm_perm;		/* operation permission struct */
#if __WORDSIZE == 32
    unsigned int __pad1;
#endif
    __time_t shm_atime;			/* time of last shmat() */
#if __WORDSIZE == 32
    unsigned int __pad2;
#endif
    __time_t shm_dtime;			/* time of last shmdt() */
#if __WORDSIZE == 32
    unsigned int __pad3;
#endif
    __time_t shm_ctime;			/* time of last change by shmctl() */
#if __WORDSIZE == 32
    unsigned int __pad4;
#endif
    size_t shm_segsz;			/* size of segment in bytes */
    __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 __glibc_reserved1;
    unsigned long int __glibc_reserved2;
  };

#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 */
# define SHM_NORESERVE	010000	/* don't check for reservations */

struct	shminfo
  {
    unsigned long shmmax;
    unsigned long shmmin;
    unsigned long shmmni;
    unsigned long shmseg;
    unsigned long shmall;
    unsigned long __glibc_reserved1;
    unsigned long __glibc_reserved2;
    unsigned long __glibc_reserved3;
    unsigned long __glibc_reserved4;
  };

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 */
Commit	Line	Data
bfff8b1b	1	/* Copyright (C) 1995-2017 Free Software Foundation, Inc.
0a398af9 UD	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
ab84e3ff PE	15	License along with the GNU C Library. If not, see
ab84e3ff PE	16	<http://www.gnu.org/licenses/>. */
0a398af9 UD	17
	18	#ifndef _SYS_SHM_H
	19	# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead."
	20	#endif
	21
	22	#include <bits/types.h>
	23	#include <bits/wordsize.h>
	24
	25	/* Permission flag for shmget. */
	26	#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */
	27	#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */
	28
	29	/* Flags for `shmat'. */
	30	#define SHM_RDONLY 010000 /* attach read-only else read-write */
	31	#define SHM_RND 020000 /* round attach address to SHMLBA */
	32	#define SHM_REMAP 040000 /* take-over region on attach */
c5bf7f84	33	#define SHM_EXEC 0100000 /* execution access */
0a398af9 UD	34
	35	/* Commands for `shmctl'. */
	36	#define SHM_LOCK 11 /* lock segment (root only) */
	37	#define SHM_UNLOCK 12 /* unlock segment (root only) */
	38
99c37bc7 UD	39	/* Segment low boundary address multiple. */
99c37bc7 UD	40	#define SHMLBA 0x00400000 /* address needs to be 4 Mb aligned */
0a398af9 UD	41
	42	/* Type to count number of attaches. */
	43	typedef unsigned long int shmatt_t;
	44
89e412f5	45	/* Data structure describing a shared memory segment. */
0a398af9 UD	46	struct shmid_ds
	47	{
	48	struct ipc_perm shm_perm; /* operation permission struct */
	49	#if __WORDSIZE == 32
	50	unsigned int __pad1;
	51	#endif
	52	__time_t shm_atime; /* time of last shmat() */
	53	#if __WORDSIZE == 32
	54	unsigned int __pad2;
	55	#endif
	56	__time_t shm_dtime; /* time of last shmdt() */
	57	#if __WORDSIZE == 32
	58	unsigned int __pad3;
	59	#endif
	60	__time_t shm_ctime; /* time of last change by shmctl() */
	61	#if __WORDSIZE == 32
	62	unsigned int __pad4;
	63	#endif
	64	size_t shm_segsz; /* size of segment in bytes */
	65	__pid_t shm_cpid; /* pid of creator */
	66	__pid_t shm_lpid; /* pid of last shmop */
	67	shmatt_t shm_nattch; /* number of current attaches */
d1d9eaf4 OB	68	unsigned long int __glibc_reserved1;
d1d9eaf4 OB	69	unsigned long int __glibc_reserved2;
0a398af9 UD	70	};
	71
	72	#ifdef __USE_MISC
	73
	74	/* ipcs ctl commands */
	75	# define SHM_STAT 13
	76	# define SHM_INFO 14
	77
	78	/* shm_mode upper byte flags */
	79	# define SHM_DEST 01000 /* segment will be destroyed on last detach */
	80	# define SHM_LOCKED 02000 /* segment will not be swapped */
9526f1fb	81	# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */
8e968c00	82	# define SHM_NORESERVE 010000 /* don't check for reservations */
0a398af9 UD	83
	84	struct shminfo
	85	{
	86	unsigned long shmmax;
	87	unsigned long shmmin;
	88	unsigned long shmmni;
	89	unsigned long shmseg;
	90	unsigned long shmall;
d1d9eaf4 OB	91	unsigned long __glibc_reserved1;
	92	unsigned long __glibc_reserved2;
	93	unsigned long __glibc_reserved3;
	94	unsigned long __glibc_reserved4;
0a398af9 UD	95	};
	96
	97	struct shm_info
	98	{
	99	int used_ids;
	100	unsigned long int shm_tot; /* total allocated shm */
	101	unsigned long int shm_rss; /* total resident shm */
	102	unsigned long int shm_swp; /* total swapped shm */
	103	unsigned long int swap_attempts;
	104	unsigned long int swap_successes;
	105	};
	106
	107	#endif /* __USE_MISC */