mirror of
https://github.com/reactos/reactos.git
synced 2024-09-10 12:54:51 +00:00
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/* $Id: shm.h,v 1.5 2002/10/29 04:45:21 rex Exp $
|
|
*/
|
|
/*
|
|
* sys/shm.h
|
|
*
|
|
* shared memory facility. Conforming to the Single UNIX(r) Specification
|
|
* Version 2, System Interface & Headers Issue 5
|
|
*
|
|
* This file is part of the ReactOS Operating System.
|
|
*
|
|
* Contributors:
|
|
* Created by KJK::Hyperion <noog@libero.it>
|
|
*
|
|
* THIS SOFTWARE IS NOT COPYRIGHTED
|
|
*
|
|
* This source code is offered for use in the public domain. You may
|
|
* use, modify or distribute it freely.
|
|
*
|
|
* This code is distributed in the hope that it will be useful but
|
|
* WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESS OR IMPLIED ARE HEREBY
|
|
* DISCLAMED. This includes but is not limited to warranties of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
*
|
|
*/
|
|
#ifndef __SYS_SHM_H_INCLUDED__
|
|
#define __SYS_SHM_H_INCLUDED__
|
|
|
|
/* INCLUDES */
|
|
|
|
/* OBJECTS */
|
|
|
|
/* TYPES */
|
|
typedef unsigned short shmatt_t;
|
|
|
|
struct shmid_ds
|
|
{
|
|
struct ipc_perm shm_perm; /* operation permission structure */
|
|
size_t shm_segsz; /* size of segment in bytes */
|
|
pid_t shm_lpid; /* process ID of last shared memory operation */
|
|
pid_t shm_cpid; /* process ID of creator */
|
|
shmatt_t shm_nattch; /* number of current attaches */
|
|
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() */
|
|
};
|
|
|
|
/* CONSTANTS */
|
|
#define SHM_RDONLY (0x00000200) /* Attach read-only (else read-write). */
|
|
#define SHM_RND (0x00000400) /* Round attach address to SHMLBA. */
|
|
|
|
#define SHMLBA (4096) /* Segment low boundary address multiple. */
|
|
|
|
/* PROTOTYPES */
|
|
void *shmat(int, const void *, int);
|
|
int shmctl(int, int, struct shmid_ds *);
|
|
int shmdt(const void *);
|
|
int shmget(key_t, size_t, int);
|
|
|
|
/* MACROS */
|
|
|
|
#endif /* __SYS_SHM_H_INCLUDED__ */
|
|
|
|
/* EOF */
|
|
|