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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi Chris,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I think that would be good. I have some modifications following Robert’s advice and after more testing I will be posting a PR. Yes, all of the object caching
in OpenFlight plugin is the original code from Brede. It all dates back to 2006.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I was able to swap to use osgDB::Registry’s object cache with no complications on my end. I also got to learn more about the object caching system and how
it clears out old values. Thanks Robert for the suggestion to look in this direction.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">I ended up posting a PR at
<a href="https://github.com/openscenegraph/OpenSceneGraph/pull/583">https://github.com/openscenegraph/OpenSceneGraph/pull/583</a> - It’s low priority since it’s a 12 year old issue, and because it takes a lot of work to get large enough images to crash an
app from the problem on modern systems.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">- Dan<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> osg-users [mailto:osg-users-bounces@lists.openscenegraph.org]
<b>On Behalf Of </b>Chris Hanson<br>
<b>Sent:</b> Tuesday, July 31, 2018 10:40 AM<br>
<b>To:</b> OpenSceneGraph Users<br>
<b>Subject:</b> Re: [osg-users] Unbounded growth in OpenFlight ReaderWriter<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I think Brede Johansson wrote that loader once upon a time. I'm hoping to connect with him in Oslo this week. Maybe I'll ask him about this if I do.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Tue, Jul 31, 2018 at 11:54 AM Daniel Emminizer, Code 5773 <<a href="mailto:dan.emminizer@nrl.navy.mil">dan.emminizer@nrl.navy.mil</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hello All,<br>
<br>
I've found what appears to be unbounded growth in the OpenFlight loader. I have a work-around but wanted to run it past the community since there are many here who are more familiar with the format and the loader than me.<br>
<br>
I'm seeing uncontrolled memory growth when using the std::istream version of readNode. It appears to populate the local cache with new images, but never clears out the local cache. The filename-based version of readNode() does clear out the cache before it
returns.<br>
<br>
Does it make sense to add in:<br>
<br>
flt::Registry::instance()->clearLocalCache();<br>
<br>
... before the return of the ReadResult at the bottom of this method at <a href="https://github.com/openscenegraph/OpenSceneGraph/blob/master/src/osgPlugins/OpenFlight/ReaderWriterFLT.cpp#L533" target="_blank">
https://github.com/openscenegraph/OpenSceneGraph/blob/master/src/osgPlugins/OpenFlight/ReaderWriterFLT.cpp#L533</a> ?<br>
<br>
<br>
If that's not a good path forward, do you have any suggestions on how to clear the cache on demand?<br>
<br>
Thanks,<br>
<br>
- Dan<br>
<br>
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<p class="MsoNormal">-- <o:p></o:p></p>
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<p class="MsoNormal" align="center" style="text-align:center">Chris 'Xenon' Hanson, omo sanza lettere. Xenon@AlphaPixel.com
<a href="http://www.alphapixel.com/" target="_blank">http://www.alphapixel.com/</a><o:p></o:p></p>
<p class="MsoNormal" align="center" style="text-align:center">Training • Consulting • Contracting<o:p></o:p></p>
<p class="MsoNormal" align="center" style="text-align:center">3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL<o:p></o:p></p>
<p class="MsoNormal" align="center" style="text-align:center"><span style="font-size:9.5pt">Legal/IP • Forensics • </span>Imaging <span style="font-size:9.5pt">• UAVs • GIS • GPS • osgEarth • Terrain • Telemetry • Cryptography • LIDAR • Embedded • Mobile •
iPhone/iPad/iOS • Android</span><o:p></o:p></p>
<p class="MsoNormal" align="center" style="text-align:center"><a href="https://twitter.com/alphapixel" target="_blank">@alphapixel</a>
<a href="http://facebook.com/alphapixel" target="_blank">facebook.com/alphapixel</a> (775) 623-PIXL [7495]<o:p></o:p></p>
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