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#include <sys/sem.h>
int semctl(int sem_id, int sem_num, int command, …);
int semget(key_t key, int num_sems, int sem_flags);
int semop(int sem_id, struct sembuf *sem_ops, size_t num_sem_ops);
 
semgetº¯Êý¸ù¾ÝÌṩµÄkeyÉú³ÉÐźÅÁ¿±êʶ·û£»
semctlº¯Êý³õʼ»¯»òÕßɾ³ýÐźÅÁ¿±êʶ·û£»
semopº¯Êý¸Ä±äÐźÅÁ¿´óС
 
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#include <sys/shm.h>
void *shmat(int shm_id, const void *shm_addr, int shmflg);
int shmctl(int shm_id, int cmd, struct shmid_ds *buf);
int shmdt(const void *shm_addr);
int shmget(key_t key, size_t size, int shmflag);
 
shmgetº¯Êý¸ù¾ÝkeyÉú³ÉÓÐЧµÄ¹²ÏíÄÚ´æ¶ÎÃû£¬¸ù¾Ý²ÎÊýsize²úÉú¹²ÏíµÄÄÚ´æÈÝÁ¿¡£
shmatº¯Êý½«´´½¨µÄ¹²ÏíÄÚ´æ¶ÎÁ¬½Óµ½Ò»¸ö½ø³ÌµÄÄÚ´æ¿Õ¼äÖУ¬ÕâÑù²Å¿ÉÒÔʹÓøöÎÄÚ´æ¡£
shmdtº¯Êý½«¹²ÏíÄÚ´æ´Óµ±Ç°ÄÚ´æÖзÖÀë¡£
shmctlº¯Êý¿ÉÒÔɾ³ý¹²ÏíÄÚ´æ¶Î¡£
 
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#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/msg.h>
int msgctl(int msqid, int cmd, struct msqid_ds *buf);
int msgget(key_t key, int msgflg);
int msgrcv(int msqid, void *msg_ptr, size_t msg_sz, long int msgtype, int msgflg);
int msgsnd(int msqid, const void *msg_ptr, size_t msg_sz, int msgflg);


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