devela::_dep::sdl3::sys::mutex

Function SDL_CreateSemaphore

pub unsafe extern "C" fn SDL_CreateSemaphore(
    initial_value: u32,
) -> *mut SDL_Semaphore
Available on crate feature dep_sdl3 only.
Expand description

Create a semaphore.

This function creates a new semaphore and initializes it with the value initial_value. Each wait operation on the semaphore will atomically decrement the semaphore value and potentially block if the semaphore value is 0. Each post operation will atomically increment the semaphore value and wake waiting threads and allow them to retry the wait operation.

§Parameters

  • initial_value: the starting value of the semaphore.

§Return value

Returns a new semaphore or NULL on failure; call SDL_GetError() for more information.

§Availability

This function is available since SDL 3.2.0.

§See also