CodeGRITS plugin crashes with RuntimeExceptionWithAttachments in trackers.EyeTracker.getASTStructureElement

[jnareb]

I was able to run CodeGRITS with eye-tracker emulated with mouse (thanks to change proposed in PR #15), and with iMotions Lab via iMotions Events API (work very much in progress in my fork of repository: jnareb/CodeGRITS, on add-imotions-support branch, which should address the jnareb#1 issue).

Unfortunately, from time to time, the CodeGRITS plugin crashes with the following error:

com.intellij.openapi.diagnostic.RuntimeExceptionWithAttachments:
Read access is allowed from inside read-action only (see Application.runReadAction());
If you access or modify model on EDT consider wrapping your code in WriteIntentReadAction ;
see https://jb.gg/ij-platform-threading for details
Current thread: Thread[#51,AWT-EventQueue-0,10,main] 1201111603 (EventQueue.isDispatchThread()=true)
SystemEventQueueThread: (same)

The stack trace differs in detail from case to case, but (from what I understand) the source of problems is the following part:

at trackers.EyeTracker.getASTStructureElement(EyeTracker.java:450)
at trackers.EyeTracker.lambda$processRawData$1(EyeTracker.java:306)

I have used CodeGRITS plugin in two projects, and the problem happens when browsing Python code of Django app, but not strangely for the other project.

Below you can find the whole stack trace:

stacktrace.txt

com.intellij.openapi.diagnostic.RuntimeExceptionWithAttachments: Read access is allowed from inside read-action only (see Application.runReadAction()); If you access or modify model on EDT consider wrapping your code in WriteIntentReadAction ; see https://jb.gg/ij-platform-threading for details
Current thread: Thread[#51,AWT-EventQueue-0,10,main] 1201111603 (EventQueue.isDispatchThread()=true)
SystemEventQueueThread: (same)
    at com.intellij.util.concurrency.ThreadingAssertions.createThreadAccessException(ThreadingAssertions.java:257)
    at com.intellij.util.concurrency.ThreadingAssertions.softAssertReadAccess(ThreadingAssertions.java:173)
    at com.intellij.openapi.application.impl.ApplicationImpl.assertReadAccessAllowed(ApplicationImpl.java:1171)
    at com.intellij.psi.impl.source.PsiFileImpl.assertReadAccessAllowed(PsiFileImpl.java:198)
    at com.intellij.psi.impl.source.PsiFileImpl.getStubTreeOrFileElement(PsiFileImpl.java:726)
    at com.intellij.psi.impl.source.PsiFileImpl.getStubTree(PsiFileImpl.java:721)
    at com.intellij.psi.impl.source.SpineRef.getStub(SpineRef.java:27)
    at com.intellij.extapi.psi.StubBasedPsiElementBase.getStub(StubBasedPsiElementBase.java:358)
    at com.jetbrains.python.psi.impl.PyImportElementImpl.getImportedQName(PyImportElementImpl.java:43)
    at com.jetbrains.python.psi.impl.PyImportElementImpl.toString(PyImportElementImpl.java:215)
    at java.base/java.lang.String.valueOf(String.java:4465)
    at trackers.EyeTracker.getASTStructureElement(EyeTracker.java:450)
    at trackers.EyeTracker.lambda$processRawData$1(EyeTracker.java:306)
    at java.base/java.lang.Thread.run(Thread.java:1583)
    at com.intellij.util.concurrency.ChildContext$runInChildContext$1.invoke(propagation.kt:167)
    at com.intellij.util.concurrency.ChildContext$runInChildContext$1.invoke(propagation.kt:167)
    at com.intellij.util.concurrency.ChildContext.runInChildContext(propagation.kt:173)
    at com.intellij.util.concurrency.ChildContext.runInChildContext(propagation.kt:167)
    at com.intellij.util.concurrency.ContextRunnable.run(ContextRunnable.java:27)
    at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318)
    at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:781)
    at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:728)
    at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:722)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
    at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
    at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:750)
    at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.kt:595)
    at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.kt:488)
    at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$12$lambda$11$lambda$10$lambda$9(IdeEventQueue.kt:313)
    at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:865)
    at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$12$lambda$11$lambda$10(IdeEventQueue.kt:312)
    at com.intellij.ide.IdeEventQueueKt.performActivity$lambda$3(IdeEventQueue.kt:974)
    at com.intellij.openapi.application.TransactionGuardImpl.performActivity(TransactionGuardImpl.java:110)
    at com.intellij.ide.IdeEventQueueKt.performActivity(IdeEventQueue.kt:974)
    at com.intellij.ide.IdeEventQueue.dispatchEvent$lambda$12(IdeEventQueue.kt:307)
    at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.kt:347)
    at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:207)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:128)
    at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:117)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:113)
    at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:105)
    at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:92)

---

I use PyCharm 2025.2.1.1 on Windows 11 Pro, 24H2, with Python 3.13 as python.exe in venv.

I have installed CodeGRITS from branch in my fork ot the repo, i.e., 0.3.2 with modifications.

[jnareb]

Not sure if this StackOverflow question is related to the problem or not: https://stackoverflow.com/q/76809649/46058

[TTangNingzhi]

Yes, the StackOverflow discussion you referenced is relevant. I ran your code on my MacBook and did not observe the same warnings (likely due to environment differences). However, I have encountered this error previously when developing other JetBrains plugins. The issue arises because AST access must be performed within a read action using Application.runReadAction().

I suggest applying the following change at line 450:

Element aSTStructure = ApplicationManager.getApplication().runReadAction(
        (Computable<Element>) () -> getASTStructureElement(psiElement)
);

Could you test this modification on your setup? If you encounter similar errors elsewhere, the same adjustment should be applied.

[jnareb]

Thanks. I'll try to test this modification soon.

[jnareb]

It looks like this (in PR #20 change fixed the problem. I have run CodeGRITS tracking with the same settings (same eye-tracker, same project, same files), and there was no crash... but the problem is not deterministic enough to be certain of the fix.

Thanks @TTangNingzhi for the help!