[osg-users] osgText crash

[Robert Osfield]

Hi Alexander,

Could you try either putting the mutex in the global scope or creating a
small initializer class that calls getDefaultFont() that gets constructed
in the global scope, the OSG has a helper macro for this so you could use:

OSG_INIT_SINGLETON_PROXY(InitDefaultFont, getDefaultFont())

Robert.



On 7 April 2015 at 17:41, Alexander Bobkov <alexander.e.bobkov at gmail.com>
wrote:

> Hi,
>
> My osgEarth based application was crashing from time to time (3-4 times a
> day). It was not easy to debug. But eventually I've caught the problem
> place in Release with Debug info mode.
>
> DatabasePager thread crashed in osgText/Font.cpp file in the function:
>
>
> Code:
> osg::ref_ptr<Font>& Font::getDefaultFont()
> {
>     static OpenThreads::Mutex s_DefaultFontMutex;
>     OpenThreads::ScopedLock<OpenThreads::Mutex> lock(s_DefaultFontMutex);
>
>     static osg::ref_ptr<Font> s_defaultFont = new DefaultFont;
>     return s_defaultFont;
> }
>
>
>
> I suppose that scoped static variable initialization is not thread-safe.
>
> Perhaps the s_DefaultFontMutex variable should be the global.
>
> Regards,
> Alexander
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=63290#63290
>
>
>
>
>
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