NAME¶

SDL_TryWaitSemaphore - See if a semaphore has a positive value and decrement it if it does.

HEADER FILE¶

Defined in SDL3/SDL_mutex.h

SYNOPSIS¶

#include "SDL3/SDL.h"

bool SDL_TryWaitSemaphore(SDL_Semaphore *sem);

DESCRIPTION¶

This function checks to see if the semaphore pointed to by sem has a positive value and atomically decrements the semaphore value if it does. If the semaphore doesn't have a positive value, the function immediately returns false.

FUNCTION PARAMETERS¶

sem

the semaphore to wait on.

RETURN VALUE¶

Returns true if the wait succeeds, false if the wait would block.

AVAILABILITY¶

This function is available since SDL 3.1.3.

SEE ALSO¶

•(3), SDL_SignalSemaphore(3), •(3), SDL_WaitSemaphore(3), •(3), SDL_WaitSemaphoreTimeout(3)