using System;
using System.Threading;
public class EnterExit {
private int result = 0;
public void NonCriticalSection() {
Console.WriteLine("Entered Thread " + Thread.CurrentThread.GetHashCode());
for (int i = 1; i <= 5; i++) {
Console.WriteLine("Result = " + result++ + " ThreadID "
+ Thread.CurrentThread.GetHashCode());
Thread.Sleep(1000);
}
Console.WriteLine("Exiting Thread " + Thread.CurrentThread.GetHashCode());
}
public void CriticalSection() {
Monitor.Enter(this);
Console.WriteLine("Entered Thread " + Thread.CurrentThread.GetHashCode());
for (int i = 1; i <= 5; i++) {
Console.WriteLine("Result = " + result++ + " ThreadID " +
Thread.CurrentThread.GetHashCode());
Thread.Sleep(1000);
}
Console.WriteLine("Exiting Thread " + Thread.CurrentThread.GetHashCode());
Monitor.Exit(this);
}
public static void Main(String[] args) {
EnterExit e = new EnterExit();
Thread nt1 = new Thread(new ThreadStart(e.NonCriticalSection));
nt1.Start();
Thread nt2 = new Thread(new ThreadStart(e.NonCriticalSection));
nt2.Start();
Thread ct1 = new Thread(new ThreadStart(e.CriticalSection));
ct1.Start();
Thread ct2 = new Thread(new ThreadStart(e.CriticalSection));
ct2.Start();
}
}
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