Is osgDB::writeNodeFile() thread safety?

[husterlzj]

When I use osgDB::writeNodeFile() in mutil-threading, there may be occasional infinite loops, the process cannot exit.

[robertosfield]

You'll need to provide more information about what you are doing to be able to guess at what might be going wrong. What type of data what formats, what's the stack trace of the threads when it gets locked out.

[husterlzj]

Thanks for your reply. The type of data is PagedLod node. The data format is .osgb file.
You can refer to the following code：
//
#pragma omp parallel for
for(int i=0; i<nodeNum; ++i){
…
ExportNodeFile(i)
{
…
osg::ref_ptrosgDB::ReaderWriter::Options option = new osgDB:: ReaderWriter::Options;
option->setOptionString("WriteImageHint=Includefile JPEG_QUALITY 100");
// type of node is: osg::PagedLOD, osg::Geode, or osg::Group
osgDB::writeNodeFile(node, savePath, Option);
…
}
}
//
no threads is running when it gets locked out.

[robertosfield]

Given the scant detail my best guess is libjpeg functions aren't thread safe. Try getting a stack trace.

[husterlzj]

Thank you very much. I'Il try.