Individual skill
concurrency-debugging
Use when reading TSan race reports, debugging deadlocks with GDB thread inspection, analyzing Helgrind lock-order violations, or reviewing std::atomic and happens-before usage.
.devin/skills/concurrency-debugging/SKILL.md
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- Instructions only
- Last checked
- Nov 4, 2026
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- Repository last updated
- Sep 28, 2026
- License
- Apache-2.0
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# Concurrency debugging
## Contract
| Field | Bound contract |
|---|---|
| Trigger | A ThreadSanitizer or Helgrind report needs reading, a process hangs in a suspected deadlock, `std::atomic` usage needs review, or a cross-thread access needs a happens-before justification. |
| Authority | Read-only. Emits analysis and commands for the operator to run on the target; no file writes, no rollback needed. No remote mutation. |
| Side effect | Diagnostic commands and a verdict in chat. Nothing is written. |
| Done | The race or deadlock is named by its two conflicting accesses or its lock cycle, the fix is stated, and the verification run is described. |
## Inputs
1. Symptom (required): a TSan or Helgrind report, a hung or deadlocked process, or code under review.