Albireo in the constellation Cygnus (The Swan)

Extra Credit

I have planned this extra credit to be as fair as I can be, allowing Project 5 to be briefly reopened for extra credit.

There is also an Extra Credit for Project 7. That is an advanced extra credit depending upon both Project 6 and Project 7.

1. The extra credit for both are at most 2 points.
2. The extra credit for Project 5 is only on the Basic Test.
3. The Basic Test is a maximum of 5 points. The EC might be limited by the number of points already obtained on the Basic Test.
4. The Extended Test of Project 5 will be automatically reweighted from 1 point to 2 points. This will not negatively affect the grade of those seeking the extra credit. The re-weight is for fairness to those students that completed the project by the original date.
5. The EC of both are due Monday, 23 November, but are extended with 3 day grace period.
6. No points are awarded on any homework after the expiration of this grace period.

Monitor Hints

The following rules will help correctly write the monitor portion of Project 5.

1. Have critical sections. These are code sectdions that are considered inside the monitor.
2. For simplicity, such critical sections are the entire body of a subroutine.
3. Always take the lock when entering a critical section, and release the lock on exiting.
4. Assuring taking of the lock consistently can be done by taking the lock immediately on entering the subroutine.
5. Assuring the release of the lock consistently can be done by releasing the lock immediately before any return statment in the subroutine.
6. Wait is typically enclosed in an "infinite looking" while loop, whose condition is a test such as Is_Empty and whose body is the single wait operation.
7. Return errors only if there is an error, not for a partially completed monitor task.