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Man Pages


Manual Reference Pages  -  SDL_SEMPOST (3)

NAME

SDL_SemPost - Unlock a semaphore.

CONTENTS

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

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SDL SDL_SEMPOST (3) Tue 11 Sep 2001, 23:00

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