Concurrency basics · interview question
What happens if a thread tries to acquire a lock that it already holds using a ReentrantLock?
Multiple choiceEasychapter-15-curatedpremiumconcurrencysynchronized-and-locks
Answer and explanation
Correct answer
C. The lock count is incremented
Why
ReentrantLock allows a thread to acquire the same lock multiple times without blocking. Each successful lock acquisition increments a hold count, which must be decremented before the lock is fully released.
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