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{\large\bf BACI Project for an OS Course} 
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This is problem 6.16 on page 213 of the textbook, made specific
to Ben-Ari Concurrent Pascal. Write a program containing a monitor
{\bf AlarmClock}. The monitor must have an integer variable {\bf
theClock} (initialization to zero) and two procedures: 
\begin{itemize}
\item PROCEDURE {\bf Tick}; \\
increments {\bf theClock} each time that it is called. It can do other
things, like SIGNALC, if needed, but no WAITCs.
\item PROCEDURE {\bf Alarm}({\bf id} : INTEGER; {\bf delta} : INTEGER); \\
blocks caller having identifier {\bf id} for at least {\bf delta}
ticks of {\bf theClock}. 
\end{itemize}
You may endow the monitor with any other variables that it needs. The
monitor should be able to accommodate up to 5 simultaneous alarms. 

The main program should have two procedures outside of the monitor:
\begin{itemize}
\item PROCEDURE {\bf Ticker}; \\
calls {\bf Tick} in a repeat-forever loop.
\item PROCEDURE {\bf Thread}({\bf id} : INTEGER; {\bf myDelta} : INTEGER); \\
calls {\bf Alarm} in a repeat-forever loop. 
\end{itemize}

The main program cannot have any variables. The main program should
start 4 concurrent threads: {\bf Thread(100,3)}, 
{\bf Thread(200,7)}, 
{\bf Thread(300,10)}, and 
{\bf Ticker}. Output should occur for each of the following events:
\begin{enumerate}
\item At each clock tick, show the values of {\bf theClock}. 
\item When any thread either waits or reawakens from a wait, show the
id of the thread, the name of the condition on which it is waiting,
and the time ({\bf theClock}) at which the wait occurs. 
\item When a condition is signalled, show the name of the condition
being signalled and the time at which the signal occurs. 
\end{enumerate}
Hand in a listing of the program and output showing each
{\bf Thread} copy enduring at least one alarm cycle. You may find the
{\bf tee} command helpful in this regard. 

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