1. What is the difference between a semaphore and a mutex?

Question

Anonymous · Accepted Answer

Both serve to synchronize access to a shared resource by multiple threads. The first 'pends' till the resource is available and the producer 'signals' when done; the second acquires the lock, uses the resource and releases the lock.

Anonymous · Answer

It's essential to demonstrate that you can really go deep... there are plenty of followup questions and (sometimes tangential) angles to explore.


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