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Signal and shared memory function library: Sem_acquire

Source: Internet
Author: User
Keywords PHP Chinese function Manual Sem_acquire signal and shared memory function library
Tags aliyun function function library get html http memory php
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Sem_acquire

(PHP3 >= 3.0.6, PHP4)

Sem_acquire---&http://www.aliyun.com/zixun/aggregation/37954.html ">nbsp; Get the signal.

Syntax: int sem_acquire (int sem_identifier)

Description:

Success returns TRUE, and failure returns false.

Sem_acquire () blockade (not necessary) until the signal can be obtained, if the signal is exceeded Max_acquire value, then the signal will be locked before trying to get the signal.

After a request has been processed, any signal that is processed to process it without a clear release will automatically be released and a warning will be generated.

Reference: Sem_get () sem_release ()

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Related Keywords:
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