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><H1 |
><A |
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>SDL_DestroySemaphore</A |
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>Name</H2 |
>SDL_DestroySemaphore -- Destroys a semaphore that was created by <A |
HREF="sdlcreatesemaphore.html" |
>SDL_CreateSemaphore</A |
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>Synopsis</H2 |
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><PRE |
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>#include "SDL.h" |
#include "SDL_thread.h"</PRE |
><P |
><CODE |
><CODE |
CLASS="FUNCDEF" |
>void <B |
CLASS="FSFUNC" |
>SDL_DestroySemaphore</B |
></CODE |
>(SDL_sem *sem);</CODE |
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><H2 |
>Description</H2 |
><P |
><TT |
CLASS="FUNCTION" |
>SDL_DestroySemaphore</TT |
> destroys the semaphore pointed to |
by <TT |
CLASS="PARAMETER" |
><I |
>sem</I |
></TT |
> that was created by |
<A |
HREF="sdlcreatesemaphore.html" |
><TT |
CLASS="FUNCTION" |
>SDL_CreateSemaphore</TT |
></A |
>. |
It is not safe to destroy a semaphore if there are threads currently blocked |
waiting on it.</P |
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>Examples</H2 |
><P |
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>if (my_sem != NULL) { |
SDL_DestroySemaphore(my_sem); |
my_sem = NULL; |
}</PRE |
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>See Also</H2 |
><P |
><A |
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><TT |
CLASS="FUNCTION" |
>SDL_CreateSemaphore</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 |
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