FGFS-4.1/OpenSceneGraph
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Added --db-affinit cpuNum option to osgterrain example to illustrate how to set the thead affinity of the DatabasePager threads.

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git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14516 16af8721-9629-0410-8352-f15c8da7e697
This commit is contained in:
Robert Osfield
2014-11-21 14:46:08 +00:00
parent c71016bd3c
commit f49d7ae110
1 changed files with 13 additions and 0 deletions
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13
examples/osgterrain/osgterrain.cpp
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@@ -244,6 +244,9 @@ int main(int argc, char** argv)
osgDB::Registry::instance()->setReadFileCallback(new CleanTechniqueReadFileCallback());
}
bool setDatabaseThreadAffinity = false;
unsigned int cpuNum = 0;
while(arguments.read("--db-affinity", cpuNum)) { setDatabaseThreadAffinity = true; }
// load the nodes from the commandline arguments.
osg::ref_ptr<osg::Node> rootnode = osgDB::readNodeFiles(arguments);
@@ -294,6 +297,16 @@ int main(int argc, char** argv)
// add a viewport to the viewer and attach the scene graph.
viewer.setSceneData( rootnode.get() );
// if required set the DatabaseThread affinity, note must call after viewer.setSceneData() so that the osgViewer::Scene object is constructed with it's DatabasePager.
if (setDatabaseThreadAffinity)
{
for (unsigned int i=0; i<viewer.getDatabasePager()->getNumDatabaseThreads(); ++i)
{
osgDB::DatabasePager::DatabaseThread* thread = viewer.getDatabasePager()->getDatabaseThread(i);
thread->setProcessorAffinity(cpuNum);
OSG_NOTICE<<"Settings affinity of DatabaseThread="<<thread<<" isRunning()="<<thread->isRunning()<<" cpuNum="<<cpuNum<<std::endl;
}
}
// run the viewers main loop
return viewer.run();