Comment 3 for bug 1879532

See https://stackoverflow.com/questions/35828004/waitforsingleobject-for-thread-object-does-not-work-in-dll-unload

I have implemented a solution by creating a function within the myCaLab DLL which in turn ca_task_exit (or ca_context_destroy), and which called from the main application.
This causes it to exit normally.

Is this a solution that meets your needs?