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view docs/html/sdlcreatemutex.html @ 3958:85b6fb6a5e3c SDL-1.2

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Actually, this is a better fix...clear the error state once if everything we need loaded; it's more efficient, and works even if the last unnecessary xrandr symbol failed to load. Otherwise, leave the original loadso error, so the end user can find out what symbol failed.
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 13 Jun 2007 08:00:10 +0000
parents 355632dca928
children
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>SDL_CreateMutex</TITLE
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>SDL_CreateMutex</H1
><DIV
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><H2
>Name</H2
>SDL_CreateMutex&nbsp;--&nbsp;Create a mutex</DIV
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>Synopsis</H2
><DIV
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><PRE
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>#include "SDL.h"
#include "SDL_thread.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>SDL_mutex *<B
CLASS="FSFUNC"
>SDL_CreateMutex</B
></CODE
>(void);</CODE
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><H2
>Description</H2
><P
>Create a new, unlocked mutex.</P
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><H2
>Examples</H2
><PRE
CLASS="PROGRAMLISTING"
>SDL_mutex *mut;

mut=SDL_CreateMutex();
.
.
if(SDL_mutexP(mut)==-1){
  fprintf(stderr, "Couldn't lock mutex\n");
  exit(-1);
}
.
/* Do stuff while mutex is locked */
.
.
if(SDL_mutexV(mut)==-1){
  fprintf(stderr, "Couldn't unlock mutex\n");
  exit(-1);
}

SDL_DestroyMutex(mut);&#13;</PRE
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><P
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><TT
CLASS="FUNCTION"
>SDL_mutexP</TT
></A
>,
<A
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>SDL_mutexV</TT
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