semaphore try_acquire

nes::semaphore::try_acquire

Functions

(1) bool try_acquire();

1. Checks if a resource is available, and if that is the case decrements the resource counter.

Parameters

None.

Return value

1. Returns true if a resource was successfully acquired, otherwise returns false.

Exceptions

1. May throw an exception depending on the implementation behaviour.

Implementation details

1. On Windows, calls WaitForSingleObject with a timeout of 0ms
   On Posix systems, calls sem_trywait