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+<HTML
+><HEAD
+><TITLE
+>SDL_CreateSemaphore</TITLE
+><META
+NAME="GENERATOR"
+CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
+"><LINK
+REL="HOME"
+TITLE="SDL Library Documentation"
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+TITLE="Multi-threaded Programming"
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+TITLE="SDL_mutexV"
+HREF="sdlmutexv.html"><LINK
+REL="NEXT"
+TITLE="SDL_DestroySemaphore"
+HREF="sdldestroysemaphore.html"></HEAD
+><BODY
+CLASS="REFENTRY"
+BGCOLOR="#FFF8DC"
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+VLINK="#551a8b"
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+><DIV
+CLASS="NAVHEADER"
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+SUMMARY="Header navigation table"
+WIDTH="100%"
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+><TR
+><TH
+COLSPAN="3"
+ALIGN="center"
+>SDL Library Documentation</TH
+></TR
+><TR
+><TD
+WIDTH="10%"
+ALIGN="left"
+VALIGN="bottom"
+><A
+HREF="sdlmutexv.html"
+ACCESSKEY="P"
+>Prev</A
+></TD
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+ALIGN="center"
+VALIGN="bottom"
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+><TD
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+HREF="sdldestroysemaphore.html"
+ACCESSKEY="N"
+>Next</A
+></TD
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+></TABLE
+><HR
+ALIGN="LEFT"
+WIDTH="100%"></DIV
+><H1
+><A
+NAME="SDLCREATESEMAPHORE"
+></A
+>SDL_CreateSemaphore</H1
+><DIV
+CLASS="REFNAMEDIV"
+><A
+NAME="AEN7936"
+></A
+><H2
+>Name</H2
+>SDL_CreateSemaphore&nbsp;--&nbsp;Creates a new semaphore and assigns an initial value to it.</DIV
+><DIV
+CLASS="REFSYNOPSISDIV"
+><A
+NAME="AEN7939"
+></A
+><H2
+>Synopsis</H2
+><DIV
+CLASS="FUNCSYNOPSIS"
+><A
+NAME="AEN7940"
+></A
+><P
+></P
+><PRE
+CLASS="FUNCSYNOPSISINFO"
+>#include "SDL.h"
+#include "SDL_thread.h"</PRE
+><P
+><CODE
+><CODE
+CLASS="FUNCDEF"
+>SDL_sem *<B
+CLASS="FSFUNC"
+>SDL_CreateSemaphore</B
+></CODE
+>(Uint32 initial_value);</CODE
+></P
+><P
+></P
+></DIV
+></DIV
+><DIV
+CLASS="REFSECT1"
+><A
+NAME="AEN7946"
+></A
+><H2
+>Description</H2
+><P
+><TT
+CLASS="FUNCTION"
+>SDL_CreateSemaphore()</TT
+> creates a new semaphore and
+initializes it with the value <TT
+CLASS="PARAMETER"
+><I
+>initial_value</I
+></TT
+>.
+Each locking operation on the semaphore by
+<A
+HREF="sdlsemwait.html"
+>SDL_SemWait</A
+>,
+<A
+HREF="sdlsemtrywait.html"
+>SDL_SemTryWait</A
+> or
+<A
+HREF="sdlsemwaittimeout.html"
+>SDL_SemWaitTimeout</A
+>
+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
+<A
+HREF="sdlsempost.html"
+>SDL_SemPost</A
+>
+will atomically increment the semaphore value.</P
+></DIV
+><DIV
+CLASS="REFSECT1"
+><A
+NAME="AEN7955"
+></A
+><H2
+>Return Value</H2
+><P
+>Returns a pointer to an initialized semaphore or
+<SPAN
+CLASS="RETURNVALUE"
+>NULL</SPAN
+> if there was an error.</P
+></DIV
+><DIV
+CLASS="REFSECT1"
+><A
+NAME="AEN7959"
+></A
+><H2
+>Examples</H2
+><P
+><PRE
+CLASS="PROGRAMLISTING"
+>SDL_sem *my_sem;
+
+my_sem = SDL_CreateSemaphore(INITIAL_SEM_VALUE);
+
+if (my_sem == NULL) {
+        return CREATE_SEM_FAILED;
+}</PRE
+></P
+></DIV
+><DIV
+CLASS="REFSECT1"
+><A
+NAME="AEN7963"
+></A
+><H2
+>See Also</H2
+><P
+><A
+HREF="sdldestroysemaphore.html"
+><TT
+CLASS="FUNCTION"
+>SDL_DestroySemaphore</TT
+></A
+>,
+<A
+HREF="sdlsemwait.html"
+><TT
+CLASS="FUNCTION"
+>SDL_SemWait</TT
+></A
+>,
+<A
+HREF="sdlsemtrywait.html"
+><TT
+CLASS="FUNCTION"
+>SDL_SemTryWait</TT
+></A
+>,
+<A
+HREF="sdlsemwaittimeout.html"
+><TT
+CLASS="FUNCTION"
+>SDL_SemWaitTimeout</TT
+></A
+>,
+<A
+HREF="sdlsempost.html"
+><TT
+CLASS="FUNCTION"
+>SDL_SemPost</TT
+></A
+>,
+<A
+HREF="sdlsemvalue.html"
+><TT
+CLASS="FUNCTION"
+>SDL_SemValue</TT
+></A
+></P
+></DIV
+><DIV
+CLASS="NAVFOOTER"
+><HR
+ALIGN="LEFT"
+WIDTH="100%"><TABLE
+SUMMARY="Footer navigation table"
+WIDTH="100%"
+BORDER="0"
+CELLPADDING="0"
+CELLSPACING="0"
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+><A
+HREF="sdlmutexv.html"
+ACCESSKEY="P"
+>Prev</A
+></TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="index.html"
+ACCESSKEY="H"
+>Home</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+><A
+HREF="sdldestroysemaphore.html"
+ACCESSKEY="N"
+>Next</A
+></TD
+></TR
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+>SDL_mutexV</TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="thread.html"
+ACCESSKEY="U"
+>Up</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+>SDL_DestroySemaphore</TD
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+>
+\ No newline at end of file