man SDL_SemValue (3): Return the current value of a semaphore.

SDL_SemValue(3) Return the current value of a semaphore.

SYNOPSIS

#include "SDL.h" #include "SDL/SDL_thread.h"

Uint32 SDL_SemValue(SDL_sem *sem);

SDL_SemValue() returns the current semaphore value from the semaphore pointed to by sem.

Returns current value of the semaphore.

  sem_value = SDL_SemValue(my_sem);