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Yuriy Artamonov
bd518d52b3
ExceptionBreakpoint.getPsiClass() ran DebuggerUtils.findClass() inside a non-cancellable ReadAction.compute(). findClass() reaches into the stub index (StubIndexImpl.getAsyncState), which can block while the index is still being built. A non-cancellable read action cannot yield to a pending write action, so the caller (XBreakpoint source-position resolution on a background dispatcher) froze, waiting on the index while holding the read lock. Replace ReadAction.compute() with a cancellable, retryable read via ReadAction.nonBlocking(...).executeSynchronously(). It runs the same computation in a read action that is interrupted with a ProcessCanceledException and restarted whenever a write action is about to occur, so it no longer blocks write actions. When the caller already holds read access, it degrades to running the computation as-is, matching the previous behavior. M-Session-Id: M-905a82eb-0dac-4509-afc1-6985fd974338 IJ-CR-213777 GitOrigin-RevId: d1bacf40838ae77251ca068dfb07f8eaf102d929