NAME
SDL_SemPost - Unlock a semaphore.
SYNOPSIS
#include "SDL.h" #include "SDL_thread.h"
int SDL_SemPost(SDL_sem *sem);
DESCRIPTION
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.
RETURN VALUE
Returns 0 if successful or -1 if there was an error (leaving the
semaphore unchanged).
EXAMPLES
SDL_SemPost(my_sem);
SEE ALSO
SDL_CreateSemaphore, SDL_DestroySemaphore, SDL_SemWait, SDL_SemTryWait,
SDL_SemWaitTimeout, SDL_SemValue