[Feature]DCEVM: Cannot add break point for code that was created during running debug session

[mojo2012]

I use DCEVM to do hot code replacement alot. This works greate so far.
But when I try to set a breakpoint to the code that has been created while the debug session is running, I only get a greyed out breakpoint. The tooltip hint tells me to restart the debugging session.

Environment

• Operating System: 10.12.6 (16G1314)
• JDK version: 1.8.0_144
• Visual Studio Code version: 1.23.0 (1.23.0)
• Java extension version: 0.25.0
• Java Debugger extension version: 0.9.0

Steps To Reproduce

1. start debugger
2. add code
3. try to set breakpoint into newly created code

Current Result

greyed out breakpint

Expected Result

regular breakpoint that works

Additional Informations

DCEVM is used to inject code

[andxu]

@mojo2012 Thanks for using vscode java debugger, which also supports HCR just the same as that in eclipse, if you prefer DCEVM, which is not tested by us yet, we will put it in backlog and please keep an eye over this issue, I will post here if we decide to take action or have solution to DCEVM

[github-actions]

Hi @mojo2012, I'm an AI Support assistant here to help with your issue. While the team reviews your request, I wanted to provide some possible tips and documentation that might help you in the meantime.

Suggestions:

• Currently the Java Debug extension doesn’t support setting breakpoints in classes added via DCEVM without restarting the session. As a workaround, restart the debugger after you inject new code to enable breakpoints in that code.
• If you’d like this feature, please open an enhancement request against vscode-java-debug:
  https://github.com/microsoft/vscode-java-debug/issues/new

Other references with low confidence

• Support “Drop to frame”: requests better DCEVM integration (restart method/frame) but not breakpoints in newly loaded code. Support "Drop to frame" #235
• Investigate debugger with decompiler support: about decompiled classes breakpoint support, not new code injection. Investigate the debugger with decompiler support #48 (comment)
• Debug class in JAR without source: inability to set breakpoints in JAR-only classes, unrelated to hot-reloaded code. How to debug the class in jar without source package? It seems to be useless to set a breakpoint #786

The team will respond to your issue shortly. I hope these suggestions are helpful in the meantime. If this comment helped you, please give it a 👍. If the suggestion was not helpful or incorrect, please give it a 👎. Your feedback helps us improve!