In what situations would one want to use reentrant locks versus normal locks?
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In what situations would one want to use reentrant locks versus normal locks?
I presume a reentrant lock would have some additional overhead compared to a normal lock – to check what thread is acquiring the lock.
Therefore, if you know that under normal operation a thread will only acquire the lock once before releasing it again, you may gain some performance by using a normal lock. This could be particularly beneficial in tight loops, etc.