sem_acquire

sem_acquire

Acquire a semaphore

bool **sem_acquire** SysvSemaphore $semaphore bool $non_blocking

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. sem_acquire

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

semaphore is a semaphore obtained from . semaphore``sem_get

non_blockingSpecifies if the process shouldn't wait for the semaphore to be acquired. If set to true, the call will return false immediately if a semaphore cannot be immediately acquired.

return.success

sem_get``sem_release