SDL_SemPost - Unlock a semaphore.
#include "SDL.h" #include "SDL_thread.h"
int SDL_SemPost(
SDL_sem *sem);
SDL_SemPost unlocks the semaphore pointed to by
sem and atomically
increments the semaphores value. Threads that were blocking on the semaphore
may be scheduled after this call succeeds.
SDL_SemPost should be called after a semaphore is locked by a successful
call to
SDL_SemWait,
SDL_SemTryWait or
SDL_SemWaitTimeout.
Returns
0 if successful or
-1 if there was an error (leaving the
semaphore unchanged).
SDL_SemPost(my_sem);
SDL_CreateSemaphore,
SDL_DestroySemaphore,
SDL_SemWait,
SDL_SemTryWait,
SDL_SemWaitTimeout,
SDL_SemValue