320 lines
17 KiB
HTML
320 lines
17 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML>
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<TITLE>class OSGDB_EXPORT osgDB::DatabasePager</TITLE>
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<META NAME="GENERATOR" CONTENT="DOC++ 3.4.10">
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</HEAD>
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<BODY BGCOLOR="#ffffff">
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<H2>class OSGDB_EXPORT <A HREF="#DOC.DOCU">osgDB::DatabasePager</A></H2></H2><BLOCKQUOTE>Database paging class which manages the loading of files in a background thread, and syncronizing of loaded models with the main scene graph</BLOCKQUOTE>
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<HR>
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<H2>Inheritance:</H2>
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<APPLET CODE="ClassGraph.class" WIDTH=600 HEIGHT=95>
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<param name=classes value="MOpenThreads::Thread,M,Mosg::NodeVisitor::DatabaseRequestHandler,M,CDatabasePager,MDatabasePager.html">
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<param name=before value="M,M,M">
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<param name=after value="Ml_,MD_,M">
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<param name=indent value="0,0,1">
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<param name=arrowdir value="down">
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</APPLET>
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<HR>
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<DL>
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<P><DL>
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<DT><H3>Public Methods</H3><DD><DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif> <B><A HREF="#DOC.2.1.1">DatabasePager</A></B>()
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>virtual void <B><A HREF="#DOC.2.1.2">requestNodeFile</A></B>(const std::string& fileName, osg::Group* group)
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<DD><I>Add a request to load a node file to end the the database request list</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>virtual void <B><A HREF="#DOC.2.1.3">run</A></B>()
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<DD><I>run does the database paging</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>void <B><A HREF="#DOC.2.1.4">addLoadedDataToSceneGraph</A></B>(double timeStamp)
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<DD><I>Add the loaded data to the scene graph</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>void <B><A HREF="#DOC.2.1.5">registerPagedLODs</A></B>(osg::Node* subgraph)
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<DD><I>Find all PagedLOD nodes in a subgraph and register them with the DatabasePager so it can keep track of expired nodes.</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>void <B><A HREF="#DOC.2.1.6">setExpiryDelay</A></B>(double expiryDelay)
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<DD><I>Set the amount of time that a subgraph will be kept without being visited in the cull traversal before being removed</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>double <B><A HREF="#DOC.2.1.7">getExpiryDelay</A></B>() const
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<DD><I>Get the amount of time that a subgraph will be kept without being visited in the cull traversal before being removed</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>void <B><A HREF="#DOC.2.1.8">setDeleteRemovedSubgraphsInDatabaseThread</A></B>(bool flag)
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<DD><I>set whether the removed subgraphs should be deleted in the database thread or not</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>bool <B><A HREF="#DOC.2.1.9">getDeleteRemovedSubgraphsInDatabaseThread</A></B>() const
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<DD><I>get whether the removed subgraphs should be deleted in the database thread or not</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>void <B><A HREF="#DOC.2.1.10">removeExpiredSubgraphs</A></B>(double currentFrameTime)
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<DD><I>Iterate through the active PagedLOD nodes children removing children which havn't been visited since specified expiryTime.</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>void <B><A HREF="#DOC.2.1.11">setCompileRenderingObjectsForContexID</A></B>(unsigned int contextID, bool on)
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<DD><I>Turn the compilation of rendering objects for specfied graphics context on (true) or off(false)</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>bool <B><A HREF="#DOC.2.1.12">getCompileRenderingObjectsForContexID</A></B>(unsigned int contextID)
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<DD><I>Get whether the compilation of rendering objects for specfied graphics context on (true) or off(false)</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>void <B><A HREF="#DOC.2.1.13">compileRenderingObjects</A></B>(osg::State& state, double& availableTime)
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<DD><I>Compile the rendering objects (display lists,texture objects, VBO's) on loaded subgraph.</I>
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</DL></P>
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<P><DL>
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<DT><H3>Public Members</H3><DD><DT>
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class OSGDB_EXPORT <B><A HREF="ReleaseTexturesAndDrawablesVisitor.html">ReleaseTexturesAndDrawablesVisitor</A></B>: public osg::NodeVisitor
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<DD><I>Helper class used internally to force the release of texture objects and displace lists</I>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>typedef std::vector< osg::ref_ptr<osg::PagedLOD> > <B><A HREF="#DOC.2.1.15">PagedLODList</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>typedef std::vector< osg::ref_ptr<osg::StateSet> > <B><A HREF="#DOC.2.1.16">StateSetList</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>typedef std::vector< osg::ref_ptr<osg::Drawable> > <B><A HREF="#DOC.2.1.17">DrawableList</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>typedef std::pair<<!1><A HREF="DatabasePager.html#DOC.2.1.16">StateSetList</A>,<!1><A HREF="DatabasePager.html#DOC.2.1.17">DrawableList</A>> <B><A HREF="#DOC.2.1.18">DataToCompile</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>typedef std::map< unsigned int, <!1><A HREF="DatabasePager.html#DOC.2.1.18">DataToCompile</A> > <B><A HREF="#DOC.2.1.19">DataToCompileMap</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>typedef std::set<unsigned int> <B><A HREF="#DOC.2.1.20">ActiveGraphicsContexts</A></B>
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</DL></P>
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<P><DL>
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<DT><H3>Protected Fields</H3><DD><DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif><!1><A HREF="DatabasePager.html#DOC.2.1.23">DatabaseRequestList</A> <B><A HREF="#DOC.2.1.24">_fileRequestList</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>OpenThreads::Mutex <B><A HREF="#DOC.2.1.25">_fileRequestListMutex</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif><!1><A HREF="DatabasePager.html#DOC.2.1.23">DatabaseRequestList</A> <B><A HREF="#DOC.2.1.26">_dataToCompileList</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>OpenThreads::Mutex <B><A HREF="#DOC.2.1.27">_dataToCompileListMutex</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>bool <B><A HREF="#DOC.2.1.28">_deleteRemovedSubgraphsInDatabaseThread</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>osg::NodeList <B><A HREF="#DOC.2.1.29">_childrenToDeleteList</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>OpenThreads::Mutex <B><A HREF="#DOC.2.1.30">_childrenToDeleteListMutex</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif><!1><A HREF="DatabasePager.html#DOC.2.1.23">DatabaseRequestList</A> <B><A HREF="#DOC.2.1.31">_dataToMergeList</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>OpenThreads::Mutex <B><A HREF="#DOC.2.1.32">_dataToMergeListMutex</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif><!1><A HREF="DatabasePager.html#DOC.2.1.15">PagedLODList</A> <B><A HREF="#DOC.2.1.33">_pagedLODList</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>double <B><A HREF="#DOC.2.1.34">_expiryDelay</A></B>
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif><!1><A HREF="DatabasePager.html#DOC.2.1.20">ActiveGraphicsContexts</A> <B><A HREF="#DOC.2.1.35">_activeGraphicsContexts</A></B>
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</DL></P>
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<P><DL>
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<DT><H3>Protected Methods</H3><DD><DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>virtual <B><A HREF="#DOC.2.1.21">~DatabasePager</A></B>()
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</DL></P>
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<P><DL>
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<DT><H3>Protected Members</H3><DD><DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>struct <B><A HREF="#DOC.2.1.22">DatabaseRequest</A></B>: public osg::Referenced
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<DT>
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<IMG ALT="[more]" BORDER=0 SRC=icon1.gif>typedef std::vector< osg::ref_ptr<<!1><A HREF="DatabasePager.html#DOC.2.1.22">DatabaseRequest</A>> > <B><A HREF="#DOC.2.1.23">DatabaseRequestList</A></B>
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</DL></P>
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</DL>
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<A NAME="DOC.DOCU"></A>
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<HR>
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<H2>Documentation</H2>
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<BLOCKQUOTE>Database paging class which manages the loading of files in a background thread,
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and syncronizing of loaded models with the main scene graph</BLOCKQUOTE>
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<DL>
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<A NAME="DatabasePager"></A>
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<A NAME="DOC.2.1.1"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B> DatabasePager()</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="requestNodeFile"></A>
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<A NAME="DOC.2.1.2"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>virtual void requestNodeFile(const std::string& fileName, osg::Group* group)</B></TT>
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<DD>Add a request to load a node file to end the the database request list
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<DL><DT><DD></DL><P>
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<A NAME="run"></A>
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<A NAME="DOC.2.1.3"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>virtual void run()</B></TT>
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<DD>run does the database paging
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<DL><DT><DD></DL><P>
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<A NAME="addLoadedDataToSceneGraph"></A>
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<A NAME="DOC.2.1.4"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>void addLoadedDataToSceneGraph(double timeStamp)</B></TT>
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<DD>Add the loaded data to the scene graph
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<DL><DT><DD></DL><P>
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<A NAME="registerPagedLODs"></A>
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<A NAME="DOC.2.1.5"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>void registerPagedLODs(osg::Node* subgraph)</B></TT>
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<DD>Find all PagedLOD nodes in a subgraph and register them with
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the DatabasePager so it can keep track of expired nodes.
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note, should be only be called from the update thread.
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<DL><DT><DD></DL><P>
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<A NAME="setExpiryDelay"></A>
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<A NAME="DOC.2.1.6"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>void setExpiryDelay(double expiryDelay)</B></TT>
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<DD>Set the amount of time that a subgraph will be kept without being visited in the cull traversal
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before being removed
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<DL><DT><DD></DL><P>
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<A NAME="getExpiryDelay"></A>
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<A NAME="DOC.2.1.7"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>double getExpiryDelay() const </B></TT>
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<DD>Get the amount of time that a subgraph will be kept without being visited in the cull traversal
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before being removed
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<DL><DT><DD></DL><P>
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<A NAME="setDeleteRemovedSubgraphsInDatabaseThread"></A>
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<A NAME="DOC.2.1.8"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>void setDeleteRemovedSubgraphsInDatabaseThread(bool flag)</B></TT>
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<DD>set whether the removed subgraphs should be deleted in the database thread or not
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<DL><DT><DD></DL><P>
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<A NAME="getDeleteRemovedSubgraphsInDatabaseThread"></A>
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<A NAME="DOC.2.1.9"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>bool getDeleteRemovedSubgraphsInDatabaseThread() const </B></TT>
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<DD>get whether the removed subgraphs should be deleted in the database thread or not
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<DL><DT><DD></DL><P>
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<A NAME="removeExpiredSubgraphs"></A>
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<A NAME="DOC.2.1.10"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>void removeExpiredSubgraphs(double currentFrameTime)</B></TT>
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<DD>Iterate through the active PagedLOD nodes children removing
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children which havn't been visited since specified expiryTime.
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note, should be only be called from the update thread.
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<DL><DT><DD></DL><P>
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<A NAME="setCompileRenderingObjectsForContexID"></A>
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<A NAME="DOC.2.1.11"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>void setCompileRenderingObjectsForContexID(unsigned int contextID, bool on)</B></TT>
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<DD>Turn the compilation of rendering objects for specfied graphics context on (true) or off(false)
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<DL><DT><DD></DL><P>
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<A NAME="getCompileRenderingObjectsForContexID"></A>
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<A NAME="DOC.2.1.12"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>bool getCompileRenderingObjectsForContexID(unsigned int contextID)</B></TT>
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<DD>Get whether the compilation of rendering objects for specfied graphics context on (true) or off(false)
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<DL><DT><DD></DL><P>
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<A NAME="compileRenderingObjects"></A>
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<A NAME="DOC.2.1.13"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>void compileRenderingObjects(osg::State& state, double& availableTime)</B></TT>
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<DD>Compile the rendering objects (display lists,texture objects, VBO's) on loaded subgraph.
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note, should only be called from the draw thread.
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<DL><DT><DD></DL><P>
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<A NAME="PagedLODList"></A>
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<A NAME="DOC.2.1.15"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>typedef std::vector< osg::ref_ptr<osg::PagedLOD> > PagedLODList</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="StateSetList"></A>
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<A NAME="DOC.2.1.16"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>typedef std::vector< osg::ref_ptr<osg::StateSet> > StateSetList</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="DrawableList"></A>
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<A NAME="DOC.2.1.17"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>typedef std::vector< osg::ref_ptr<osg::Drawable> > DrawableList</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="DataToCompile"></A>
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<A NAME="DOC.2.1.18"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>typedef std::pair<<!1><A HREF="DatabasePager.html#DOC.2.1.16">StateSetList</A>,<!1><A HREF="DatabasePager.html#DOC.2.1.17">DrawableList</A>> DataToCompile</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="DataToCompileMap"></A>
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<A NAME="DOC.2.1.19"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>typedef std::map< unsigned int, <!1><A HREF="DatabasePager.html#DOC.2.1.18">DataToCompile</A> > DataToCompileMap</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="ActiveGraphicsContexts"></A>
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<A NAME="DOC.2.1.20"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>typedef std::set<unsigned int> ActiveGraphicsContexts</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="~DatabasePager"></A>
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<A NAME="DOC.2.1.21"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>virtual ~DatabasePager()</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="DatabaseRequest"></A>
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<A NAME="DOC.2.1.22"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>struct DatabaseRequest: public osg::Referenced</B></TT>
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<DL><DT><DD></DL><P><DL>
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<A NAME="DatabaseRequest"></A>
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<A NAME="DOC.2.1.22.1"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B> DatabaseRequest()</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_fileName"></A>
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<A NAME="DOC.2.1.22.2"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>std::string _fileName</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_numOfRequests"></A>
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<A NAME="DOC.2.1.22.3"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>unsigned int _numOfRequests</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_groupForAddingLoadedSubgraph"></A>
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<A NAME="DOC.2.1.22.4"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>osg::ref_ptr<osg::Group> _groupForAddingLoadedSubgraph</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_loadedModel"></A>
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<A NAME="DOC.2.1.22.5"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>osg::ref_ptr<osg::Node> _loadedModel</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_dataToCompileMap"></A>
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<A NAME="DOC.2.1.22.6"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B><!1><A HREF="DatabasePager.html#DOC.2.1.19">DataToCompileMap</A> _dataToCompileMap</B></TT>
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<DL><DT><DD></DL><P></DL>
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<A NAME="DatabaseRequestList"></A>
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<A NAME="DOC.2.1.23"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>typedef std::vector< osg::ref_ptr<<!1><A HREF="DatabasePager.html#DOC.2.1.22">DatabaseRequest</A>> > DatabaseRequestList</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_fileRequestList"></A>
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<A NAME="DOC.2.1.24"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B><!1><A HREF="DatabasePager.html#DOC.2.1.23">DatabaseRequestList</A> _fileRequestList</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_fileRequestListMutex"></A>
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<A NAME="DOC.2.1.25"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>OpenThreads::Mutex _fileRequestListMutex</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_dataToCompileList"></A>
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<A NAME="DOC.2.1.26"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B><!1><A HREF="DatabasePager.html#DOC.2.1.23">DatabaseRequestList</A> _dataToCompileList</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_dataToCompileListMutex"></A>
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<A NAME="DOC.2.1.27"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>OpenThreads::Mutex _dataToCompileListMutex</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_deleteRemovedSubgraphsInDatabaseThread"></A>
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<A NAME="DOC.2.1.28"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>bool _deleteRemovedSubgraphsInDatabaseThread</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_childrenToDeleteList"></A>
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<A NAME="DOC.2.1.29"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>osg::NodeList _childrenToDeleteList</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_childrenToDeleteListMutex"></A>
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<A NAME="DOC.2.1.30"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>OpenThreads::Mutex _childrenToDeleteListMutex</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_dataToMergeList"></A>
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<A NAME="DOC.2.1.31"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B><!1><A HREF="DatabasePager.html#DOC.2.1.23">DatabaseRequestList</A> _dataToMergeList</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_dataToMergeListMutex"></A>
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<A NAME="DOC.2.1.32"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>OpenThreads::Mutex _dataToMergeListMutex</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_pagedLODList"></A>
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<A NAME="DOC.2.1.33"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B><!1><A HREF="DatabasePager.html#DOC.2.1.15">PagedLODList</A> _pagedLODList</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_expiryDelay"></A>
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<A NAME="DOC.2.1.34"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B>double _expiryDelay</B></TT>
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<DL><DT><DD></DL><P>
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<A NAME="_activeGraphicsContexts"></A>
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<A NAME="DOC.2.1.35"></A>
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<DT><IMG ALT="o" BORDER=0 SRC=icon2.gif><TT><B><!1><A HREF="DatabasePager.html#DOC.2.1.20">ActiveGraphicsContexts</A> _activeGraphicsContexts</B></TT>
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<DL><DT><DD></DL><P></DL>
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<HR><DL><DT><B>This class has no child classes.</B></DL>
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<DL><DT><DD></DL><P><P><I><A HREF="index.html">Alphabetic index</A></I> <I><A HREF="HIER.html">HTML hierarchy of classes</A> or <A HREF="HIERjava.html">Java</A></I></P><HR>
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