msg_stat_queue
sem_get
Semaphore 함수 목록
PHP Manual

# sem_acquire

(PHP 4, PHP 5)

sem_acquire — Acquire a semaphore

### 설명

bool sem_acquire ( resource `$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 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.

### 인수

`sem_identifier`

  `sem_identifier` is a semaphore resource, obtained from sem_get().

### 반환값

성공할 경우 `TRUE`를, 실패할 경우 `FALSE`를 반환합니다.

### 참고

- sem_get() - Get a semaphore id
- sem_release() - Release a semaphore

msg_stat_queue
sem_get
Semaphore 함수 목록
PHP Manual