msgapi.h

在SCO UNIX制定界面程序 可根据文件配制菜单,而不必修改源程序,非常方便

#ifndef _MSGAPI_H_
#define _MSGAPI_H_

#include <sys/types.h>

/************************************************************
	        NonBlock Message Queue API define 
*************************************************************/

/* Return code define */

#define MSGMNG_IPC_ERR 		-1
#define MSG_Q_NOT_FOUND		-2
#define MSGMNG_FULL		-3
#define MSG_RLOG_FULL		-4
#define MSGID_NOT_FOUND		-5
#define PID_NOT_FOUND		-6
#define MSG_MALLOC_ERR		-7
#define MSG_R_NOT_FOUND		-8
#define MSG_LOG_NOT_FOUND	-9
#define MSG_R_LOG_NOT_FOUND	-10
#define MSGSND_ERR		-11
#define MSGRCV_ERR		-12
#define MSG_LOG_FULL		-13
#define INSERT_MSGQLOG_ERR	-14
#define MSGKEY_NOT_FOUND	-15
#define MSG_DATA_FULL		-16
#define MSGID_ERR		-17
#define MSG_W_LOG_NOT_FOUND	-18
#define MSG_W_LOG_FULL		-19
#define MSGRCV_TIME_OUT		-20
#define MTYPE_ERR		-21
#define P_SEMOP_ERR		-22
#define V_SEMOP_ERR		-23
#define SIGNAL_BRK		-24
#define MSGSND_TIME_OUT		-25

#define PRIORITY		0x01
#define AUTO_LOGOUT		0x02

struct msg_q_stat {
		int msg_w_log_cnt;
		int msg_log_cnt;
};

struct msg_s_stat {
		int free_msg_w_log;
		int free_msg_r_log;
		int free_msg_log;
		int free_mem_byte;
};

/*	Message queue init proc */

int create_message_queue ( key_t MSGKEY , int max_delay_time );
int get_message_queue ( key_t MSGKEY );
int remove_message_queue ( key_t MSGKEY );
int message_r_login ( int msgid , long mtype );
int message_r_logout ( int msgid , long mtype );

/*	Message communication proc */

int message_send ( int msgid , char *data , int size , long mtype , \
int timeout , int flag );
int message_recv ( int msgid , char *data , int size , long *mtype , \
int timeout , int flag );

#endif