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Date: Tue, 1 Nov 2005 20:25:10 +0100 From: Dirk Mueller Subject: [PATCH] build SDL with nonexecutable stack libSDL is by default marked with an executable stack, which it doesn't actually need. the reason for this is that there are assembler files in the source tree not properly annotated with the "noexec stack" section. As such the linker does a safe-fallback and marks the whole lib as "requires executable stack". the patch below removes this by adding annotations. As far as I can see it shouldn't break anything.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 01 Nov 2005 23:19:59 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_SetTimer</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="SDL Library Documentation"
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TITLE="Time"
HREF="time.html"><LINK
REL="PREVIOUS"
TITLE="SDL_RemoveTimer"
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><BODY
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><HR
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WIDTH="100%"></DIV
><H1
><A
NAME="SDLSETTIMER"
></A
>SDL_SetTimer</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN8557"
></A
><H2
>Name</H2
>SDL_SetTimer&nbsp;--&nbsp;Set a callback to run after the specified number of milliseconds has
elapsed.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN8560"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN8561"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_SetTimer</B
></CODE
>(Uint32 interval, SDL_TimerCallback callback);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="SDLTIMERCALLBACK"
></A
><H2
>Callback</H2
><P
>/* Function prototype for the timer callback function */
typedef Uint32 (*SDL_TimerCallback)(Uint32 interval);</P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN8570"
></A
><H2
>Description</H2
><P
>Set a callback to run after the specified number of milliseconds has
elapsed. The callback function is passed the current timer interval
and returns the next timer interval.  If the returned value is the
same as the one passed in, the periodic alarm continues, otherwise a
new alarm is scheduled.</P
><P
>To cancel a currently running timer, call
<TT
CLASS="FUNCTION"
>SDL_SetTimer(0, NULL);</TT
></P
><P
>The timer callback function may run in a different thread than your
main constant, and so shouldn't call any functions from within itself.</P
><P
>The maximum resolution of this timer is 10 ms, which means that if
you request a 16 ms timer, your callback will run approximately 20 ms
later on an unloaded system.  If you wanted to set a flag signaling
a frame update at 30 frames per second (every 33 ms), you might set a
timer for 30 ms (see example below).</P
><P
>If you use this function, you need to pass <TT
CLASS="LITERAL"
>SDL_INIT_TIMER</TT
>
to <TT
CLASS="FUNCTION"
>SDL_Init()</TT
>.</P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>This function is kept for compatibility but has been superseded
by the new timer functions
<A
HREF="sdladdtimer.html"
>SDL_AddTimer</A
> and
<A
HREF="sdlremovetimer.html"
>SDL_RemoveTimer</A
> which support
multiple timers.</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN8584"
></A
><H2
>Examples</H2
><P
><PRE
CLASS="PROGRAMLISTING"
>SDL_SetTimer((33/10)*10, my_callback);</PRE
></P
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN8588"
></A
><H2
>See Also</H2
><P
><A
HREF="sdladdtimer.html"
><TT
CLASS="FUNCTION"
>SDL_AddTimer</TT
></A
></P
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