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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
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>SDL_CondWaitTimeout</TITLE
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>SDL_CondWaitTimeout</H1
><DIV
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><A
NAME="AEN8393"
></A
><H2
>Name</H2
>SDL_CondWaitTimeout&nbsp;--&nbsp;Wait on a condition variable, with timeout</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN8396"
></A
><H2
>Synopsis</H2
><DIV
CLASS="FUNCSYNOPSIS"
><A
NAME="AEN8397"
></A
><P
></P
><PRE
CLASS="FUNCSYNOPSISINFO"
>#include "SDL.h"
#include "SDL_thread.h"</PRE
><P
><CODE
><CODE
CLASS="FUNCDEF"
>int <B
CLASS="FSFUNC"
>SDL_CondWaitTimeout</B
></CODE
>(SDL_cond *cond, SDL_mutex *mutex, Uint32 ms);</CODE
></P
><P
></P
></DIV
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN8403"
></A
><H2
>Description</H2
><P
>Wait on the condition variable <TT
CLASS="PARAMETER"
><I
>cond</I
></TT
> for, at most, <TT
CLASS="PARAMETER"
><I
>ms</I
></TT
> milliseconds. <TT
CLASS="PARAMETER"
><I
>mut</I
></TT
> is unlocked so it must be locked when the function is called. Returns <TT
CLASS="LITERAL"
>SDL_MUTEX_TIMEDOUT</TT
> if the condition is not signalled in the allotted time, <SPAN
CLASS="RETURNVALUE"
>0</SPAN
> if it was signalled or <SPAN
CLASS="RETURNVALUE"
>-1</SPAN
> on an error.</P
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>See Also</H2
><P
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HREF="sdlcondwait.html"
><TT
CLASS="FUNCTION"
>SDL_CondWait</TT
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