SDL_WaitSemaphore - Man Page

#include <SDL3/SDL_mutex.h>

void SDL_WaitSemaphore(SDL_Semaphore *sem);

This function suspends the calling thread until the semaphore pointed to by sem has a positive value, and then atomically decrement the semaphore value.

This function is the equivalent of calling SDL_WaitSemaphoreTimeout() with a time length of -1.

sem

the semaphore wait on.

This function is available since SDL 3.2.0.

SDL_SignalSemaphore(3), SDL_TryWaitSemaphore(3), SDL_WaitSemaphoreTimeout(3)

SDL_CreateSemaphore(3), SDL_SignalSemaphore(3), SDL_TryWaitSemaphore(3), SDL_WaitSemaphoreTimeout(3).