ipcfun.h

本代码主要是在SUN操作系统下消息队列的管理

/***************************************
 *文件名:ipcfun.h
 *描  述:进程间通信通用函数头文件
 *编  写:LHZ
 *时  间:2004-05-10
 *函  数:
 ****************************************/

#ifndef IPCFUN_H
#define IPCFUN_H

#define RO_IPC		0	/*IPC readonly  只读*/
#define RW_IPC		1	/*IPC readwrite 读写*/

#define WAIT_IPC	0	/*IPC wait		阻塞*/
#define NOWT_IPC	1	/*IPC nowait  非阻塞*/

#define __MSG_INC
#define __SHM_INC
#define __SEM_INC

#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <signal.h>
#include <ctype.h>
#include <errno.h>

#ifdef  __MSG_INC
#define  MSG_DATA_SIZE (1024 - 2 * sizeof(long))
typedef struct
{
	long	msg_type;
	long    msg_level;
	char	msg_data[MSG_DATA_SIZE];
}MsgBuf;

typedef struct
{
	char	path[50];	/*ftok参考路径,须系统完整路径*/
	char    proc[50];   /*客户端程序名*/
	key_t	key;		/*ftok key value*/
	int		msqid;		/*消息队列标识*/
	MsgBuf	msgbuf;     /*消息队列缓冲*/
}MsgSrv;

extern MsgSrv msgsrv;

void msg_down_srv();
int msg_initfp(char *, char *);
int msg_init_srv(char *, char *);
int msg_init_clt(char *, char *);
int msg_data_recv(long , char *);
int msg_data_send(long , char *);
int msg_data_sendto(long , char *);
int msg_creat(key_t , int );
int msg_open(key_t , int );
int msg_remove(int );
int msg_recv(int , MsgBuf *);
int msg_send(int , MsgBuf *);
int msg_sendto(int , MsgBuf *);

#endif   /*__MSG_INC*/

#ifdef   __SHM_INC
int  shm_create(key_t key, size_t size);
void *shm_link(key_t key, int shmid, int flag);
int  shm_unlink(void *paddr);
int  shm_remove(key_t key, int shmid);
#endif   /*__SHM_INC*/

#ifdef   __SEM_INC
#define		MIN_SHMSIZE		100
union semun{
    int              val;
    struct semid_ds  *buf;
    ushort           *array;
};
int sem_create(key_t key, int semnum);
int sem_remove(key_t key);
int sem_lock(key_t key, int semnum, int flag);
int sem_unlock(key_t key, int semnum, int flag);
int sem_valused(key_t key, int semnum, int flag);
int sem_valfree(key_t key, int semnum, int flag);
int sem_setval(key_t key, int semnum, int semval);
int sem_getval(key_t key, int semnum);
#endif   /*__SEM_INC*/

#endif   /*IPCFUN_H*/