Stopping debug session sends SIGKILL, can I specify a different signal?

[Jonahss]

Hi, I'm using the CodeLLDB extension to debug an embedded rust application on a raspberry pi.

When terminating my program, I catch the SIGTERM signal and set all the outputs to zero. Otherwise, some pins will carry voltage after shutting down, and this could potentially damage hardware.

When I start a debug session within VSCode and then stop it with the square "stop" button, I think LLDB is sending a SIGKILL signal to my application which causes it to terminate immediately (leaving GPIOs in whatever state they were in right before termination). SIGKILL cannot be caught. Is there a way to configure CodeLLDB or VSCode to send SIGTERM instead?

[vadimcn]

This is more of a LLDB question... I don't think this is possible.
Maybe you could leverage VSCode's postDebugTask to reset hardware to a safe state after a debug session?

[Jonahss]

Maybe you could leverage VSCode's postDebugTask to reset hardware to a safe state after a debug session?

Oh, that's a good idea, I'll try that, thanks.

This is more of a LLDB question

Can you point me to the call that we use which shuts down the debug session with LLDB? Maybe I can configure its kill signal?

[vadimcn]

It's SBProcess::Kill()

[vadimcn]

You could try "exitCommands": ["process signal SIGTERM"], though this seems to work only if the process is not stopped on a breakpoint.

[Jonahss]

Oh interesting. Thanks.

…

On Thu, Aug 5, 2021 at 1:58 PM vadimcn ***@***.***> wrote: You could try "exitCommands": ["process signal SIGTERM"], though this seems to work only if the process is not stopped on a breakpoint. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#497 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AALTRMO5FZWQKLA7R4JBQSTT3L3QPANCNFSM5BJESA3A> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&utm_campaign=notification-email> .

[ogapo]

Wanted to re-open this since it seems VSCode added an option to the DAP supportsTerminateRequest which does exactly this. See https://code.visualstudio.com/updates/v1_26#_improved-stop-debug-behavior. It would be nice if vscode-lldb supported this feature.