Linux IPC总结

我看网络上System V IPC 与POSIX IPC总是混在一起搞不清,今天总结一下.

System V IPC API

 

1,消息队列

int ftok(const char *pathname, int prj_id);

int msgget(key_t key,int msgflag);

int msgsnd(int msqid,const void *msgp,size_t msgsz,int msgflg);

int msgrcv(int msqid,void *msgp,size_t msgsz,long msgtyp,int msgflg);

 

2,信号量

int semget(key_t key,int nsems,int semflag);

int semctl(int semid,int semnum,int cmd,…);

int semop(int semid,struct sembuf *sops,unsigned nsops,struct timespec *timeout);

 

3,共享内存

int shmget(key_t key,size_t size,int shmflag);

int shmctl(int shmid,int cmd,struct shmid_ds *buf);

  

POSIX IPC API