Assignment 3(problem 3)

[Rahul Shah]

Professor I cant understand the 3rd problem. How can we use semaphore
and implement it. ENQ checks the value to be equal to 1 but semaphore
always checks whether it is less than 0 and blocks if it is. But ENQ
blocks it if it is 1..

[Partha Dasgupta]

Anything to do with synchronization can be done with semaphores.... so if ENQ needs to block when a number is 1, build the thing... ok remember producer consumer, the producer blorcks when the buffer count is N. Also readers writes -- reader blocks when the writer count is 1... so need an integer variable?

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Partha Dasgupta,
School of Computing Informatics, Arizona State University
EMail: par...@asu.edu
http://cactus.eas.asu.edu/partha