Mega Code Archive
Use a Semaphore
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using System;
using System.Threading;
class MyThread {
public Thread thrd;
static Semaphore sem = new Semaphore(2, 2);
public MyThread(string name) {
thrd = new Thread(this.run);
thrd.Name = name;
thrd.Start();
}
void run() {
Console.WriteLine(thrd.Name + " is waiting for a permit.");
sem.WaitOne();
Console.WriteLine(thrd.Name + " acquires a permit.");
for(int i=0;i<10;i++) {
Console.WriteLine(thrd.Name + " : " + i);
Thread.Sleep(50);
}
Console.WriteLine(thrd.Name + " releases a permit.");
sem.Release();
}
}
class MainClass {
public static void Main() {
MyThread mt1 = new MyThread("Thread #1");
MyThread mt2 = new MyThread("Thread #2");
MyThread mt3 = new MyThread("Thread #3");
mt1.thrd.Join();
mt2.thrd.Join();
mt3.thrd.Join();
}
}
Thread #1 is waiting for a permit.
Thread #1 acquires a permit.
Thread #1 : 0
Thread #2 is waiting for a permit.
Thread #2 acquires a permit.
Thread #2 : 0
Thread #3 is waiting for a permit.
Thread #1 : 1
Thread #2 : 1
Thread #1 : 2
Thread #2 : 2
Thread #1 : 3
Thread #2 : 3
Thread #2 : 4
Thread #1 : 4
Thread #2 : 5
Thread #1 : 5
Thread #2 : 6
Thread #1 : 6
Thread #1 : 7
Thread #2 : 7
Thread #1 : 8
Thread #2 : 8
Thread #1 : 9
Thread #2 : 9
Thread #1 releases a permit.
Thread #3 acquires a permit.
Thread #3 : 0
Thread #2 releases a permit.
Thread #3 : 1
Thread #3 : 2
Thread #3 : 3
Thread #3 : 4
Thread #3 : 5
Thread #3 : 6
Thread #3 : 7
Thread #3 : 8
Thread #3 : 9
Thread #3 releases a permit.
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