blob: 5487d2d5acf6edd571e1378a96cd1fc8f6134252 [file] [log] [blame]
.TH "SDL_SemPost" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference"
SDL_SemPost \- Unlock a semaphore\&.
\fB#include "SDL\&.h"
#include "SDL_thread\&.h"
\fBint \fBSDL_SemPost\fP\fR(\fBSDL_sem *sem\fR);
\fBSDL_SemPost\fP unlocks the semaphore pointed to by \fBsem\fR and atomically increments the semaphores value\&. Threads that were blocking on the semaphore may be scheduled after this call succeeds\&.
\fBSDL_SemPost\fP should be called after a semaphore is locked by a successful call to \fISDL_SemWait\fR, \fISDL_SemTryWait\fR or \fISDL_SemWaitTimeout\fR\&.
Returns \fB0\fR if successful or \fB-1\fR if there was an error (leaving the semaphore unchanged)\&.
\fI\fBSDL_CreateSemaphore\fP\fR, \fI\fBSDL_DestroySemaphore\fP\fR, \fI\fBSDL_SemWait\fP\fR, \fI\fBSDL_SemTryWait\fP\fR, \fI\fBSDL_SemWaitTimeout\fP\fR, \fI\fBSDL_SemValue\fP\fR
.\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00