SDL_SemPost - Man Page

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.

Return Value

Returns 0 if successful or -1 if there was an error (leaving the semaphore unchanged).



See Also

SDL_CreateSemaphore, SDL_DestroySemaphore, SDL_SemWait, SDL_SemTryWait, SDL_SemWaitTimeout, SDL_SemValue

Referenced By

SDL_CreateSemaphore(3), SDL_DestroySemaphore(3), SDL_SemTryWait(3), SDL_SemValue(3), SDL_SemWait(3), SDL_SemWaitTimeout(3).

Tue 11 Sep 2001, 23:00 SDL API Reference