Podręcznik PHP
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# sem_acquire

(PHP 3>= 3.0.6, PHP 4 )

sem_acquire -- Acquire a semaphore

## Description

bool sem_acquire ( int sem_identifier)

sem_acquire() blocks (if necessary) until the semaphore can be acquired. A process attempting to acquire a semaphore which it has already acquired will block forever if acquiring the semaphore would cause its max_acquire value to be exceeded.

Zwraca `TRUE` w przypadku sukcesu, `FALSE` w przypadku porażki.

After processing a request, any semaphores acquired by the process but not explicitly released will be released automatically and a warning will be generated.

See also: sem_get() and sem_release().

Poprzedni | Spis treści | Następny
msg_stat_queue | Początek rozdziału | sem_get