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I've made so many changes I don't dare continue until I check the current stuff in. /test/testatomic.c performs absolutely basic tests to show that the function work as expected. Need a second test to do more detailed tests. /include/SDL_atomic.h provides declarations for all included functions. /src/atomic/linux/SDL_atomic.c provided all the functions. On a generic built the 64 bit functions work, but they are emulated. On a build for -march=pentium and above the 64 bit functions use native instructions /src/atomic/dummy/SDL_atomic.c emulates all the operations using SDL_mutex.h. /src/atomic/win32/SDL_atomic.c is a copy of dummy /src/atomic/macosx/SDL_atomic.s is a copy of dummy These versions of SDL_atomic.c provide a frame work for building the library with a mixture of native and emulated functions. This allows the whole library to be provided on all platforms. (I hope.) I hope this fits with the SDL philosophy of either providing a common subset or emulating when the platform is missing a feature. I have not added dummy, macosx, or win32 to the build. They are there as place holders for future work. I have modified congifure.in to compile sources in /src/atomic/linux. (The SDL configure.in file is an amazing piece of work and I hope I didn't mess it up. :-)
author Bob Pendleton <bob@pendleton.com>
date Mon, 29 Jun 2009 19:54:43 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_Quit</TITLE
><META
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><H1
><A
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>SDL_Quit</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN585"
></A
><H2
>Name</H2
>SDL_Quit&nbsp;--&nbsp;Shut down SDL</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN588"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN589"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>void <B
CLASS="FSFUNC"
>SDL_Quit</B
></CODE
>(void);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN595"
></A
><H2
>Description</H2
><P
><TT
CLASS="FUNCTION"
>SDL_Quit</TT
> shuts down all SDL subsystems and frees the resources allocated to them. This should always be called before you exit. For the sake of simplicity you can set <TT
CLASS="FUNCTION"
>SDL_Quit</TT
> as your <TT
CLASS="FUNCTION"
>atexit</TT
> call, like:
<PRE
CLASS="PROGRAMLISTING"
>SDL_Init(SDL_INIT_VIDEO|SDL_INIT_AUDIO);
atexit(SDL_Quit);
.
.</PRE
></P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>While using <TT
CLASS="FUNCTION"
>atexit</TT
> maybe be fine for small programs, more advanced users should shut down SDL in their own cleanup code. Plus, using <TT
CLASS="FUNCTION"
>atexit</TT
> in a library is a sure way to crash dynamically loaded code</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
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><A
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></A
><H2
>See Also</H2
><P
><A
HREF="sdlquitsubsystem.html"
><TT
CLASS="FUNCTION"
>SDL_QuitSubsystem</TT
></A
>,
<A
HREF="sdlinit.html"
><TT
CLASS="FUNCTION"
>SDL_Init</TT
></A
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