ThreadPoolHittingTest

ThreadPoolHittingTest.cs

using System;
using System.Threading;
using System.Collections.Generic;
using System.Collections.Concurrent;

namespace ThreadPoolHittingTest
{
    class MainClass
    {
        private static ConcurrentDictionary<int, Thread> ThreadDict = new ConcurrentDictionary<int, Thread>();

        public static void Main(string[] args) {
            ThreadPool.SetMaxThreads(20, 10);

            for (int num = 0; num < 10000; num ++) {
                ThreadPool.QueueUserWorkItem(DoWork, num);
            }

            Console.ReadLine();
        }

        static void DoWork(object state) {
            Thread.Sleep(100);
            var thread = Thread.CurrentThread;

            if (ThreadDict.ContainsKey(thread.ManagedThreadId)) {
                CompareThread(ThreadDict[thread.ManagedThreadId], thread);
            } else {
                ThreadDict.TryAdd(thread.ManagedThreadId, thread);
            }
        }

        static void CompareThread(Thread thread1, Thread thread2) {
            var referenceEqual = object.ReferenceEquals(thread1, thread2);
            if (referenceEqual) {
                Console.WriteLine("{0} reused.", thread1.ManagedThreadId);
            }
        }
    }
}