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semaphore(FP)

semaphore -- semaphore characteristics

Description

The header <semaphore.h> defines the type sem_t, used in performing semaphore operations. The type sem_t is used to represent semaphores. Semaphores are implemented using file descriptors and applications are able to open up to a total of {OPEN_MAX} files and semaphores.

See also

sem_close(S), sem_destroy(S), sem_getvalue(S), sem_init(S), sem_open(S), sem_post(S), sem_unlink(S), sem_wait(S)

Standards conformance

Text reprinted and/or adapted from IEEE Std 1003.1b-1993, IEEE Standard for Information Technology, POSIX Part 1: System Application Program Interface (API) Amendment 1: Realtime Extensions [C Language], copyright © 1993 by the Institute of Electrical and Electronics Engineers, Inc. The IEEE takes no responsibility for and will assume no liability for damages resulting from the reader's misinterpretation of said information resulting from the placement and context in this publication. Information is reproduced with the permission of the IEEE.

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