class Program
{
static void Main(string[] args)
{
Console.WriteLine("Increment counter");
var c = new Counter();
var t1 = new Thread(() => TestCounter(c));
var t2 = new Thread(() => TestCounter(c));
var t3 = new Thread(() => TestCounter(c));
t1.Start();
t2.Start();
t3.Start();
t1.Join();
t2.Join();
t3.Join();
Console.WriteLine("Total Count:{0}", c.Count);
Console.WriteLine("end Increment");
var c1 = new CounterNoLock();
t1 = new Thread(() => TestCounter(c));
t2 = new Thread(() => TestCounter(c));
t3 = new Thread(() => TestCounter(c));
t1.Start();
t2.Start();
t3.Start();
t1.Join();
t2.Join();
t3.Join();
Console.WriteLine("Total Count:{0}", c1.Count);
Console.WriteLine("end CounterNoLock");
}
static void TestCounter(CounterBase c)
{
for (int i = 0; i < 10000; i++)
{
c.Increment();
c.Decrement();
}
}
class Counter : CounterBase
{
private int _count;
public int Count { get { return _count; } }
public override void Increment()
{
_count++;
}
public override void Decrement()
{
_count--;
}
}
class CounterNoLock : CounterBase
{
private int _count;
public int Count { get { return _count; } }
public override void Increment()
{
Interlocked.Increment(ref _count);
}
public override void Decrement()
{
Interlocked.Decrement(ref _count);
}
}
abstract class CounterBase
{
public abstract void Increment();
public abstract void Decrement();
}
}