.TH "SDL_CreateSemaphore" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" .SH "NAME"SDL_CreateSemaphore\- Creates a new semaphore and assigns an initial value to it\&..SH "SYNOPSIS".PP\fB#include "SDL\&.h"#include "SDL_thread\&.h".sp\fBSDL_sem *\fBSDL_CreateSemaphore\fP\fR(\fBUint32 initial_value\fR);.SH "DESCRIPTION".PP\fBSDL_CreateSemaphore()\fP creates a new semaphore and initializes it with the value \fBinitial_value\fR\&. Each locking operation on the semaphore by \fISDL_SemWait\fR, \fISDL_SemTryWait\fR or \fISDL_SemWaitTimeout\fR will atomically decrement the semaphore value\&. The locking operation will be blocked if the semaphore value is not positive (greater than zero)\&. Each unlock operation by \fISDL_SemPost\fR will atomically increment the semaphore value\&..SH "RETURN VALUE".PPReturns a pointer to an initialized semaphore or \fBNULL\fR if there was an error\&..SH "EXAMPLES".PP.PP.nf\f(CWSDL_sem *my_sem;my_sem = SDL_CreateSemaphore(INITIAL_SEM_VALUE);if (my_sem == NULL) {        return CREATE_SEM_FAILED;}\fR.fi.PP.SH "SEE ALSO".PP\fI\fBSDL_DestroySemaphore\fP\fR, \fI\fBSDL_SemWait\fP\fR, \fI\fBSDL_SemTryWait\fP\fR, \fI\fBSDL_SemWaitTimeout\fP\fR, \fI\fBSDL_SemPost\fP\fR, \fI\fBSDL_SemValue\fP\fR...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00