(C#) Handling COM object with an infinite loop

[vitalyb]

I am writing a code to test a COM object and one of its functions has an infinite loop.
Basically my code should run this COM object function in a different thread, give it some time to finish but if it doesn't, terminate it.

However, I encountered the following problems:
1) Thread.Abort wouldn't abort the thread because you can't use .NET Thread.Abort to abort unmanaged code.
2) AppDomain.Unload wouldn't do anything because it tries to abort all the threads.
3) I tried using Marashal.ReleaseComObject and it resulted with:
"An attempt has been made to free an RCW that is in use. The RCW is in use on the active thread or another thread. Attempting to free an in-use RCW can cause corruption or data loss."

By now the only current options I see is either using somehow the original Windows API to abort the thread or create a process especially to test the function. Both methods seem like a lot of overkill for what I'm trying to do.

Anyone has any ideas?

[Plater]

Are you not using DllImport to use the object?