Robert Osfield schrieb:
I have now added a Mutex to osg::Stats and use of it in the various
get/set methods.
I have tested it out by running with DrawThreadPerContext and
CullThreadPerCameraDrawThreadPerContext and holding down the 's' key
and so far so good, no crashes. I'm not noticing a performance hit
with this extra mutex, you only pay it when collect stats too so I
think safety is certainly better than what little gain one might have
on performance.
Could you do a cvs update and see if the above now work?
I did a cvs-update and made a clean compile -- I am sorry, your fix does
not work
osgviewer cow.osg --DrawThreadPerContext will crash after pressing 2 x
's' and 1 x 'h'
here's the stack-trace:
#0 0x90b2a656 in std::string::compare
#1 0x204ce790 in std::operator< <char, std::char_traits<char>,
std::allocator<char> > at basic_string.h:2190
#2 0x002b56d6 in std::less<std::string>::operator() at stl_function.h:227
#3 0x00382281 in std::_Rb_tree<std::string, std::pair<std::string
const, double>, std::_Select1st<std::pair<std::string const, double> >,
std::less<std::string>, std::allocator<std::pair<std::string const,
double> > >::find at stl_tree.h:1118
#4 0x00382346 in std::map<std::string, double,
std::less<std::string>, std::allocator<std::pair<std::string const,
double> > >::find at stl_map.h:513
#5 0x002a6228 in osg::Stats::getAttributeNoMutex at Stats.cpp:88
#6 0x204df2c4 in osg::Stats::getAttribute at Stats:52
#7 0x204e0ae5 in osgViewer::BlockDrawCallback::drawImplementation at
StatsHandler.cpp:289
#8 0x01320476 in osg::Drawable::draw at Drawable:873
#9 0x01275384 in osgUtil::RenderLeaf::render at RenderLeaf.cpp:60
#10 0x01273279 in osgUtil::RenderBin::drawImplementation at
RenderBin.cpp:427
#11 0x012785de in osgUtil::RenderStage::drawImplementation at
RenderStage.cpp:982
#12 0x01273073 in osgUtil::RenderBin::draw at RenderBin.cpp:370
#13 0x0127a4ba in osgUtil::RenderStage::drawInner at RenderStage.cpp:718
#14 0x0127a1e9 in osgUtil::RenderStage::draw at RenderStage.cpp:872
#15 0x01283f93 in osgUtil::SceneView::draw at SceneView.cpp:1305
#16 0x204d5914 in ViewerRenderingOperation::operator() at Viewer.cpp:186
#17 0x0029b9e4 in osg::GraphicsContext::runOperations at
GraphicsContext.cpp:426
#18 0x204ce284 in ViewerRunOperations::operator() at Viewer.cpp:958
#19 0x0029ef80 in osg::OperationsThread::run at GraphicsThread.cpp:290
#20 0x000c31b8 in OpenThreads::ThreadPrivateActions::StartThread at
PThread.c++:157
#21 0x90023d87 in _pthread_body
Stephan
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