/demo-hanging-python-console

Primary LanguageKotlin

Problem

Complete IDE freezes when using PyDebugValue::frameEvaluator inside the AnAction::update method.

Steps to Reproduce

  1. start gradle task runIde

  2. setup a local Python Interpreter (Python 3, no additional Python modules required)

  3. enter a = 1 into the active Python Console

  4. select variable a in the variable view

  5. use key binding alt x to trigger the action which causes the IDE to freeze

Expected Result

The IDE should be able to execute the executed action without freezing the IDE.

Actual Result

The IDE freezes and no interaction with the IDE is possible.

Additional Information

The plugin contains four different actions (A, B, C and X) in the linked plugin example to demo the problem. Only action X results into a freezing IDE if executed via the mapped key binding.

Action A

  • key binding alt a
  • does not evaluate in the AnAction::update method
  • action update thread is ActionUpdateThread.BGT

Action B

  • key binding alt b
  • does not evaluate in the AnAction::update method
  • action update thread is ActionUpdateThread.EDT

Action C

  • key binding alt c
  • does evaluate in the AnAction::update method
  • action update thread is ActionUpdateThread.EDT

Action X

  • key binding alt x
  • does evaluate in the AnAction::update method
  • action update thread is ActionUpdateThread.BGT

All actions, A, B, C and X, run successfully if:

  • the action is executed on a variable from the Python Console via the context menu (right click on variable in variable view) instead of the mapped key binding
  • the action is executed on a variable from a debugger session no matter if the key binding or context menu was used