Описание тега sysv-ipc

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System V IPC, now XSI interprocess communication, provide IPC facilities with message queues, semaphores and shared memory segments.

System V IPC (SysV IPC for short) is one of the communication mechanisms on Unix systems. They are standardized as part of the XSI extension to POSIX. The API comprises three facilities are message queues (sys/msg.h), semaphore arrays (sys/sem.h) and shared memory segments (sys/shm.h).

Not to be confused with the many other types of IPC facilities, in particular POSIX message queues (mq_xxx functions), POSIX semaphores (sem_xxx functions) and POSIX shared memory object (shm_xxx functions).