symbian-qemu-0.9.1-12/libsdl-trunk/docs/html/sdlcreatemutex.html
author johnathan.white@2718R8BGH51.accenture.com
Mon, 08 Mar 2010 18:45:03 +0000
changeset 46 b6935a90ca64
parent 1 2fb8b9db1c86
permissions -rw-r--r--
Modify framebuffer and NGA framebuffer to read screen size from board model dtb file. Optimise memory usuage of frame buffer Add example minigui application with hooks to profiler (which writes results to S:\). Modified NGA framebuffer to run its own dfc queue at high priority
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<HTML
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><HEAD
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><TITLE
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>SDL_CreateMutex</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
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"><LINK
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REL="HOME"
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TITLE="SDL Library Documentation"
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HREF="index.html"><LINK
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REL="UP"
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TITLE="Multi-threaded Programming"
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HREF="thread.html"><LINK
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REL="PREVIOUS"
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TITLE="SDL_KillThread"
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HREF="sdlkillthread.html"><LINK
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REL="NEXT"
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TITLE="SDL_DestroyMutex"
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HREF="sdldestroymutex.html"></HEAD
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><BODY
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CLASS="REFENTRY"
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BGCOLOR="#FFF8DC"
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TEXT="#000000"
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LINK="#0000ee"
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VLINK="#551a8b"
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ALINK="#ff0000"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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SUMMARY="Header navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>SDL Library Documentation</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="sdlkillthread.html"
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ACCESSKEY="P"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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></TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="sdldestroymutex.html"
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ACCESSKEY="N"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><H1
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><A
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NAME="SDLCREATEMUTEX"
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></A
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>SDL_CreateMutex</H1
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><DIV
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CLASS="REFNAMEDIV"
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><A
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NAME="AEN7820"
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></A
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><H2
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>Name</H2
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>SDL_CreateMutex&nbsp;--&nbsp;Create a mutex</DIV
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><DIV
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CLASS="REFSYNOPSISDIV"
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><A
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NAME="AEN7823"
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></A
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><H2
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>Synopsis</H2
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><DIV
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CLASS="FUNCSYNOPSIS"
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><A
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NAME="AEN7824"
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></A
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><P
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></P
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><PRE
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CLASS="FUNCSYNOPSISINFO"
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>#include "SDL.h"
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#include "SDL_thread.h"</PRE
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><P
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><CODE
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><CODE
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CLASS="FUNCDEF"
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>SDL_mutex *<B
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CLASS="FSFUNC"
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>SDL_CreateMutex</B
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></CODE
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>(void);</CODE
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></P
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><P
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></P
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></DIV
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></DIV
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><DIV
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CLASS="REFSECT1"
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><A
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NAME="AEN7830"
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></A
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><H2
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>Description</H2
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><P
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>Create a new, unlocked mutex.</P
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></DIV
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><DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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CLASS="REFSECT1"
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><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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NAME="AEN7833"
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></A
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><H2
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>Examples</H2
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><PRE
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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CLASS="PROGRAMLISTING"
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>SDL_mutex *mut;
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2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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mut=SDL_CreateMutex();
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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.
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   139
.
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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if(SDL_mutexP(mut)==-1){
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   141
  fprintf(stderr, "Couldn't lock mutex\n");
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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  exit(-1);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   143
}
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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.
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   145
/* Do stuff while mutex is locked */
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   146
.
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   147
.
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   148
if(SDL_mutexV(mut)==-1){
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   149
  fprintf(stderr, "Couldn't unlock mutex\n");
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   150
  exit(-1);
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   151
}
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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SDL_DestroyMutex(mut);&#13;</PRE
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></DIV
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><DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   156
CLASS="REFSECT1"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   158
NAME="AEN7836"
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   159
></A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   160
><H2
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   161
>See Also</H2
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><P
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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HREF="sdlmutexp.html"
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><TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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CLASS="FUNCTION"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>SDL_mutexP</TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   168
></A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   169
>,
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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diff changeset
   170
<A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   171
HREF="sdlmutexv.html"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   172
><TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
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   173
CLASS="FUNCTION"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   174
>SDL_mutexV</TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   176
>,
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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<A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   178
HREF="sdldestroymutex.html"
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><TT
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   180
CLASS="FUNCTION"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   181
>SDL_DestroyMutex</TT
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></A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></P
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></DIV
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><DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   186
CLASS="NAVFOOTER"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><HR
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   188
ALIGN="LEFT"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   189
WIDTH="100%"><TABLE
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   190
SUMMARY="Footer navigation table"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   191
WIDTH="100%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff changeset
   192
BORDER="0"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff changeset
   193
CELLPADDING="0"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   194
CELLSPACING="0"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   195
><TR
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   196
><TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   197
WIDTH="33%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   198
ALIGN="left"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   199
VALIGN="top"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   200
><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   201
HREF="sdlkillthread.html"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   202
ACCESSKEY="P"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   203
>Prev</A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   204
></TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   206
WIDTH="34%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   207
ALIGN="center"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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VALIGN="top"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   209
><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   210
HREF="index.html"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   211
ACCESSKEY="H"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   212
>Home</A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   213
></TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   215
WIDTH="33%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   216
ALIGN="right"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff changeset
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VALIGN="top"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   219
HREF="sdldestroymutex.html"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   220
ACCESSKEY="N"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   221
>Next</A
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parents:
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   222
></TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></TR
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><TR
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><TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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WIDTH="33%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   227
ALIGN="left"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   228
VALIGN="top"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   229
>SDL_KillThread</TD
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   230
><TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   231
WIDTH="34%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   232
ALIGN="center"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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   233
VALIGN="top"
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><A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   235
HREF="thread.html"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   236
ACCESSKEY="U"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   237
>Up</A
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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><TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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WIDTH="33%"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
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ALIGN="right"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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VALIGN="top"
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>SDL_DestroyMutex</TD
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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   244
></TR
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></TABLE
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></DIV
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></BODY
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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></HTML
2fb8b9db1c86 Initial QEMU (symbian-qemu-0.9.1-12) import
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>