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?
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https://bugs.launchpad.net/bugs/1879532
Title:
Can't completely shutdown libCa and libCom
Status in EPICS Base:
Confirmed
Bug description:
Most recently, Carsten Winkler reported in https://epics.anl.gov/tech-
talk/2020/msg00946.php
For a project I need to load and unload the Channel Access context in a
shared library. Loading is no problem but unloading. It always fails
during ca_context_destroy() function.
This problem has been reported and discussed previously, see
https://epics.anl.gov/tech-talk/2017/msg00371.php and
https://epics.anl.gov/tech-talk/2004/msg00743.php thus it is a known
issue which would probably require significant work to fix.
This bug report is a place-holder for any work towards making it
possible to completely shut down all libCom background threads and
releasing the resources allocated by those subsystems.
To manage notifications about this bug go to:
https://bugs.launchpad.net/epics-base/+bug/1879532/+subscriptions
- References:
- [Bug 1879532] [NEW] Can't completely shutdown libCa and libCom Andrew Johnson via Core-talk
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