#ifndef MY_IPC_H 
#define MY_IPC_H

#define MsgCreateFail 	-1301
#define MsgOpenFail 	-1302
#define MsgStateFail 	-1303
#define MsgMesgLenBad 	-1304
#define MsgSendFail  	-1305
#define MsgRecvFail  	-1306
#define MsgRemoveFail 	-1307
#define MsgTimeOut   	-1308
#define MsgOK   		0

#define SemCreateFail 	-1321
#define SemOpenFail 	-1322
#define SemSetValFail 	-1323
#define SemLockFail 	-1324
#define SemUnlockFail 	-1325
#define SemRemoveFail 	-1326

#define ShmCreateFail 	-1331
#define ShmOpenFail 	-1332
#define ShmRemoveFail 	-1333
#define ShmConnectFail 	-1334
#define ShmDisConnectF 	-1335

#define MaxMesgLen 1024

#define QPERM	0666

typedef struct {
  long MesgId;
  char MesgText[MaxMesgLen+1];
} Mesg;

int msgCreate(key_t key);
int msgOpen(key_t key); 
int msgSend(int Msgfd,long  MsgId,char *MsgText,int MsgTextLen);
int msgRecv(int Msgfd,long *MsgId,char *MsgText,int MsgTextLen);
int msgRemove(int Msgfd);
int msgStatus(int Msgfd);

int semCreate(key_t key);
int semOpen(key_t key);
int semLock(int iSemId);
int semUnlock(int iSemId);
int semRemove(int iSemId);
int semGetVal(int iSemId);
int semSetVal(int iSemId,int val);

int shmCreate(key_t key,int size);
int shmOpen(key_t key,int size); 
int shmRemove(int iShmId);
char *shmConnect(int iShmId);
int shmDisConnect(char *addr);

#endif