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Fixed bug #855 Ludwig Nussel 2009-10-18 06:31:52 PDT an mprotect call was added to fix bug 528. However that results in a buffer that allows writing and code execution. Ie the no-execute security features of modern operating systems are defeated this way. Two mprotect calls are needed. One to make the buffer executable but not writeable when done and another one to make the buffer writeable again if the content needs to be changed.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 18 Oct 2009 17:31:37 +0000
parents 355632dca928
children
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<HTML
><HEAD
><TITLE
>SDL_Delay</TITLE
><META
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><H1
><A
NAME="SDLDELAY"
></A
>SDL_Delay</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN8455"
></A
><H2
>Name</H2
>SDL_Delay&nbsp;--&nbsp;Wait a specified number of milliseconds before returning.</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN8458"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN8459"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>void <B
CLASS="FSFUNC"
>SDL_Delay</B
></CODE
>(Uint32 ms);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN8465"
></A
><H2
>Description</H2
><P
>Wait a specified number of milliseconds before returning. <TT
CLASS="FUNCTION"
>SDL_Delay</TT
> will wait at <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>least</I
></SPAN
> the specified time, but possible longer due to OS scheduling.</P
><DIV
CLASS="NOTE"
><BLOCKQUOTE
CLASS="NOTE"
><P
><B
>Note: </B
>Count on a delay granularity of <SPAN
CLASS="emphasis"
><I
CLASS="EMPHASIS"
>at least</I
></SPAN
> 10 ms.
Some platforms have shorter clock ticks but this is the most common.</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN8473"
></A
><H2
>See Also</H2
><P
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HREF="sdladdtimer.html"
><TT
CLASS="FUNCTION"
>SDL_AddTimer</TT
></A
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