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(PHP 4, PHP 5, PHP 7, PHP 8)
sem_acquire — Acquire a semaphore
sem_acquire() by default 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 maximum number of semaphore to be exceeded.
After processing a request, any semaphores acquired by the process but not explicitly released will be released automatically and a warning will be generated.
Sürüm: | Açıklama |
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8.0.0 |
semaphore expects a SysvSemaphore
instance now; previously, a resource was expected.
|