Question: Posix Shared Memory 3 points Should posix shared memory be cachable or non-cachable. Explain your answer. 4 points When three programs share a block of

Posix Shared Memory

3 points Should posix shared memory be cachable or non-cachable. Explain your answer.

4 points When three programs share a block of memory, when is the memory returned to the system

when the first program exits

when the last program exits

when returned explicitly by a program

when the system reboots.

10 points At present you cannot resize the size of a shared memory segment. If you wanted to allow resizing, what are ALL the things you would have to do to allow for this. Explain in terms of the structures we have studied in class and lab.

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