Problem
Scheduling access to a moving-head disk can be implemented by a monitor. The implementation consists of three components: user processes which request, access, and release the disk service; a disk scheduler which performs the scheduling of disk data CO be accessed by one user at a time; and driver procedures that perform actual data transfer.
(a) Write a monitor to implement the disk scheduler. The monitor should consist of two procedures, one for a request for and one for a release from disk access.
(b) Specify how a user process can call the monitor for disk access. The disk driver procedures are considered given.