Advanced interprocess communication

These system calls support interprocess messages, semaphores, and shared memory and are effective in data base management. (These IPC mechanisms are also not applicable for processes on separate hosts.)

Advanced interprocess communication functions

msgget	get message queue
msgctl	message control operations
msgop	message operations
semget	get set of semaphores
semctl	semaphore control operations
semop	semaphore operations
shmget	get shared memory segment identifier
shmctl	shared memory control operations
shmop	shared memory operations