The gap it fixes

Static deadlock detection via a lock-order graph and cycle search is well-established research (MIT/ECOOP 2005 "Static Deadlock Detection for Java Libraries"; refined for scale by Peahen, FSE 2022), but no dedicated JetBrains Marketplace plugin was found doing this ahead of time, inline, as you write code. IntelliJ IDEA's own tooling only shows a deadlock after it happens, via thread dumps of a running or hung process (Help > Diagnostic Tools > Analyze/Capture Thread Dump). There is no built-in or third-party static check that a lock-order cycle exists in your own code before you ever run it

Facts and pricing

Category: Code Quality
Pricing: Free
Platform: IntelliJ-family plugin
First published: 2026-09-02
Marketplace ID: #33999
Repository: deadlock-lock-order-companion
Growth: New listing

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