/*
C#: The Complete Reference
by Herbert Schildt
Publisher: Osborne/McGraw-Hill (March 8, 2002)
ISBN: 0072134852
*/
// Use MethodImplAttribute to synchronize a method.
using System;
using System.Threading;
using System.Runtime.CompilerServices;
class TickTock {
/* The following attribute synchronizes the entire
tick() method. */
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public void tick(bool running) {
if(!running) { // stop the clock
Monitor.Pulse(this); // notify any waiting threads
return;
}
Console.Write("Tick ");
Monitor.Pulse(this); // let tock() run
Monitor.Wait(this); // wait for tock() to complete
}
/* The following attribute synchronizes the entire
tock() method. */
[MethodImplAttribute(MethodImplOptions.Synchronized)]
public void tock(bool running) {
if(!running) { // stop the clock
Monitor.Pulse(this); // notify any waiting threads
return;
}
Console.WriteLine("Tock");
Monitor.Pulse(this); // let tick() run
Monitor.Wait(this); // wait for tick to complete
}
}
class MyThread {
public Thread thrd;
TickTock ttOb;
// Construct a new thread.
public MyThread(string name, TickTock tt) {
thrd = new Thread(new ThreadStart(this.run));
ttOb = tt;
thrd.Name = name;
thrd.Start();
}
// Begin execution of new thread.
void run() {
if(thrd.Name == "Tick") {
for(int i=0; i<5; i++) ttOb.tick(true);
ttOb.tick(false);
}
else {
for(int i=0; i<5; i++) ttOb.tock(true);
ttOb.tock(false);
}
}
}
public class TickingClock1 {
public static void Main() {
TickTock tt = new TickTock();
MyThread mt1 = new MyThread("Tick", tt);
MyThread mt2 = new MyThread("Tock", tt);
mt1.thrd.Join();
mt2.thrd.Join();
Console.WriteLine("Clock Stopped");
}
}
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