Monitor线程操作（当一个线程中处于等待状态时，另外一个线程来解锁它的等待状态继续执行下去）

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

namespace ConsoleApplication1
{
class Program
{
static int x = 0;
private static object _obj = new object();
static void Main(string[] args)
{
for (int i = 0; i < 1; i++)
{
Thread thread = new Thread(new ThreadStart(test));
thread.Start();
}
Thread.Sleep(2000);

Thread thread1 = new Thread(new ThreadStart(test1));
thread1.Start();
Thread.Sleep(2000);
Thread thread2 = new Thread(new ThreadStart(test));
thread2.Start();
Thread.Sleep(2000);
Thread thread3 = new Thread(new ThreadStart(test3));
thread3.Start();
Console.ReadKey();
}

static void test()
{
try
{
Monitor.Enter(_obj);
if (x > 0)
{
Console.WriteLine("开始等待");
Monitor.Wait(_obj);
//   Monitor.Wait(_obj, 5000);这是我设置的等待5秒继续执行
Console.WriteLine("线程3释放了锁定对象，等待已结束，现在退出！");
}
x--;
Console.WriteLine(x);
Console.WriteLine(Thread.CurrentThread.ManagedThreadId.ToString());
}
catch (Exception ex)
{
throw;
}
finally
{
Monitor.Pulse(_obj);
Monitor.Exit(_obj);
}
}

static void test1()
{
x = 2;
}

static void test3()
{
Console.WriteLine("线程3进入，开始释放锁定对象！");
Monitor.Enter(_obj);
Monitor.Pulse(_obj);
Monitor.Exit(_obj);
Console.WriteLine("线程3已释放了锁定对象！");

}
}
}