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IntelliJ debugger gets stuck

Tags:

java

debugging

intellij-idea

I'm debugging a normal Java application, no GUI, just a lot of computations and ~5 calls in the stack for the main thread when the problem occurs. Basically it keeps saying "Collecting data" in the local variable watch.

enter image description here

So instead of going step-by-step I've tried to add a breakpoint immediately after an press "Resume". Now it says "Waiting until last debugger command completes". enter image description here

Have anyone had this problem before? Is changing the debugger the only way to figure this out?

like image 255
Luca Mozzo Avatar asked Jun 16 '16 15:06

Luca Mozzo

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2 Answers

On IntelliJ (2017.1.4 Community Edition), the following fixed the problem for me:

  • File->Settings
  • Type in "toString"
  • Navigate to Build, Execution, Deployment->Debugger->Data views->Java
  • Find the "Enable 'toString()' object view:" checkbox
  • Uncheck the box

Re-run the debugger.

like image 195
CharlieB Avatar answered Sep 23 '22 12:09

CharlieB

The following fixed it for me on IntelliJ 2018.2.4:

  • Right click breakpoint
  • Toggle the setting to suspend "Thread" instead of "All"

This won't be helpful if you actually need to suspend all the threads for debugging, but it got rid of the "Collecting data..." and "Waiting until last debugger command completes" messages for me. The setting also persists for subsequent breakpoints, so you only need to change it once.

like image 31
ayluo Avatar answered Sep 22 '22 12:09

ayluo
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