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What is a mutex and a critical section.Whats difference
between them?How do each of them work?

Answer Posted / prasenjit roy

Mutex is a locking object ( like a flag ) for avoiding the
simultaneous use of a common resource. It is also used to
lock the critical section.

Ctitical Section :: is a block of code which should run
atomically ie. there should be no contact switching while
this block executes and once the block starts it should
finish without any interruption.

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