Hi Robert, I tested against the svn 3.2 and trunk branches today on Linux and get the same results with the test program I posted.
./ThreadedNotify 48 10000000 2 2 Segmentation fault ./ThreadedNotify 48 10000000 2 2 *** glibc detected *** ./ThreadedNotify: free(): invalid pointer: 0x0000000000d81500 *** Segmentation fault ./ThreadedNotify 48 10000000 2 2 *** glibc detected *** ./ThreadedNotify: double free or corruption (!prev): 0x000000000189b500 *** Segmentation fault On Sun, Aug 04, 2013 at 11:48:56AM +0000, Robert Osfield wrote: > Hi David, > > There were various changes to osg::Notify during the 3.1.x dev cycle. > Could you try out OSG-3.2 and see how you get on. > > Robert. > > On 2 August 2013 22:54, David Fries <[email protected]> wrote: > > I spent a few days tracking down a crash I was having generally when a > > terrapage terrain was paging. This is using OSG 3.1, when I finally > > caught the corruption I found that both the DatabasePager thread and > > the Draw thread were calling OSG_NOTIFY. > > > > I wrote up a test that does little more than start up a bunch of > > threads and print messages and found it too crashes. I am testing on > > both Linux x86-64 gcc 4.7.2, and Windows 7 Visual Studio 10 and both > > crash, though it crashes much quicker on Windows. > > > > It will crash pretty quickly with the default (no arguments) on Windows. > > > > The following arguments are working for me to crash on Linux on a 12 > > core (24 with hyperthreading), x86-64 system. > > ./ThreadedNotify 48 10000000 2 2 > > > > It has been pointed out that cout/cerr are thread safe, so it should > > be possible to make osg::notify thread safe as well. In this program > > it helps when I reduce the notification level, at least with the low > > number of messages being printed it seems to be unlikely. > > > > -- > > David Fries <[email protected]> PGP pub CB1EE8F0 > > http://fries.net/~david/ > > > > _______________________________________________ > > osg-users mailing list > > [email protected] > > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- David Fries <[email protected]> PGP pub CB1EE8F0 http://fries.net/~david/ _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
