Advantage of counting-semaphore -

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can tell me counting semaphore? advantage of counting semaphore? can write snippet code counting semaphore in c.

in cases have n available resources counting semaphore can keep track of number of remaining resources. when thread access 1 of semaphores counter of semaphore reduce 1 , when thread release semaphore counter increase one. if counter reaches 0 , thread ask resource thread blocked till thread release semaphore. known application of semaphore producer-consumer. can find description producer consumer problem here: https://en.wikipedia.org/wiki/producer%e2%80%93consumer_problem includes simple code looking for.

also semaphores can initialized limit maximum number of resources controls. if limit 1 called binary semaphore has 2 states sema = 1 or sema = 0 binary , counting semaphores compared here: differnce between counting , binary semaphores


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