| .TH "SDL_SemPost" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" |
| .SH "NAME" |
| SDL_SemPost \- Unlock a semaphore\&. |
| .SH "SYNOPSIS" |
| .PP |
| \fB#include "SDL\&.h" |
| #include "SDL_thread\&.h" |
| .sp |
| \fBint \fBSDL_SemPost\fP\fR(\fBSDL_sem *sem\fR); |
| .SH "DESCRIPTION" |
| .PP |
| \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\&. |
| .PP |
| \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\&. |
| .SH "RETURN VALUE" |
| .PP |
| Returns \fB0\fR if successful or \fB-1\fR if there was an error (leaving the semaphore unchanged)\&. |
| .SH "EXAMPLES" |
| .PP |
| .PP |
| .nf |
| \f(CWSDL_SemPost(my_sem);\fR |
| .fi |
| .PP |
| .SH "SEE ALSO" |
| .PP |
| \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 |
