Concurrency Review

Review code from a concurrency and thread safety perspective.

Review Checklist

Shared Mutable State

• Verify mutable state accessed from multiple threads is protected
• Check for proper use of synchronization primitives (mutex, lock, atomic)
• Look for unprotected read-modify-write sequences
• Verify thread-safe collections are used where needed

Race Conditions

• Check for time-of-check-to-time-of-use (TOCTOU) bugs
• Verify initialization is thread-safe (lazy init, singleton)
• Look for ordering assumptions without proper synchronization
• Check for data races in shared data structures