Jackd server hang

[ArtemRotov]

Hello. I'm not sure if this is the issue, so I'm not creating a issue yet. I have an application that uses jack2. If I interrupt the application through the debugger and jack_client_close is not called, then the jack server remains in a hung state. I can no longer run my application because it hangs on the jack_client_open. I have to do pkill -ABRT jackd to remove the process. Only after that I can start the application again. If closed correctly, then there is no such problem. Can you please tell me if this is the expected behaviour?

[falkTX]

Yes, the server will wait for the client side to close or process to exit, which both never do because it is manually stopped.
This could even be seen as the proper handling, as one might want to have the debug session lasting a long while. If jackd would kill the client by force, you would potentially lose the debug details.

[ArtemRotov]

Okay, I got it.
Is there a way inside the program to check that my previous server is already running and work with it? Or forcibly kill the process programmatically, without using the capabilities of the operating system directly?