An Introduction to Threads, Critical Sections, and Synchronization

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;

namespace threadtesting
{
    class crashtest_02
    {
        private const int thread_count = 30;
        private const int thread_items = 1000;

        private List<string> shared_data = new List<string>();
        private List<Thread> threads = new List<Thread>();
        bool begin = false;

        Mutex mut = new Mutex();

        public crashtest_02()
        {
            for (int i = 0; i < thread_count; i++)
                threads.Add(new Thread(Work));
            for (int i = 0; i < thread_count; i++)
                threads[i].Start(i.ToString());

            begin = true;

            for (int i = 0; i < thread_count; i++)
                threads[i].Join();

            for (int i = 0; i < shared_data.Count; i++)
                Console.WriteLine(shared_data[i]);
            Console.WriteLine("Finished.");
            Console.ReadKey();
        }

        private void Work(object param)
        {
            Thread.CurrentThread.Priority = ThreadPriority.Lowest;
            while (!begin) Thread.Sleep(1);

            string id = (string)param;
            string data = "abc - " + id;
            for (int i = 0; i < thread_items; i++)
            {
                mut.WaitOne();
                shared_data.Add(data);
                mut.ReleaseMutex();
            }
        }
    }
}