C# 多线程 AutoResetEvent和ManualResetEvent

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本文演示了一个模拟图书购买流程的多线程程序。通过创建三个独立线程分别执行扫描书籍、付款和取书的任务，并利用AutoResetEvent和ManualResetEvent进行线程间的同步与通信。展示了如何使用C#中的Thread类和事件对象来协调多线程操作。

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

namespace MutiThreadTest
{
class Program
{
static void Main(string[] args)
{
Thread SeekBookThread = new Thread(new ThreadStart(TestMutiThrd.SeekProc));
SeekBookThread.Name = "扫描线程";
SeekBookThread.Start();

Thread payMoneyThread = new Thread(new ThreadStart(TestMutiThrd.PayMoneyProc));
payMoneyThread.Name = "付钱线程";
payMoneyThread.Start();

Thread getBookThread = new Thread(new ThreadStart(TestMutiThrd.GetBookProc));
getBookThread.Name = "取书线程";
getBookThread.Start();

for (int i = 1; i <= TestMutiThrd.numIterations; i++)
{
Console.WriteLine("买书线程：书本{0}", i);
TestMutiThrd.number = i;
//Signal that a value has been written.
TestMutiThrd.SekEvent.Set();//解锁扫描线程
TestMutiThrd.buyResetEvent.WaitOne();//等待买书所有线程执行结束，才能继续
Thread.Sleep(0);
}
Thread.Sleep(1000);
Console.ReadLine();
SeekBookThread.Abort();
payMoneyThread.Abort();
getBookThread.Abort();
}
}

public class TestMutiThrd
{
public const int numIterations = 10;
//买书
public static AutoResetEvent buyResetEvent = new AutoResetEvent(false);
//扫描
public static AutoResetEvent SekEvent = new AutoResetEvent(false);
//付钱
public static AutoResetEvent PayEvent = new AutoResetEvent(false);
//取书
public static AutoResetEvent GetEvent = new AutoResetEvent(false);
//付钱和取书
public static ManualResetEvent PayGetEvent = new ManualResetEvent(false);

public static ReaderWriterLock RWLock = new ReaderWriterLock();
//static ManualResetEvent myResetEvent = new ManualResetEvent(false);
//static ManualResetEvent ChangeEvent = new ManualResetEvent(false);
public static int number; //这是关键资源
public static TestMutiThrd OTestMutiThrd = new TestMutiThrd();

public int NumIterations
{
get
{
return numIterations;
}
}

/// <summary>
/// 扫描过程
/// </summary>
public static void SeekProc()
{
while (true)
{
SekEvent.WaitOne();
//SekEvent.Reset();
Console.WriteLine("{0}：书本{1}", Thread.CurrentThread.Name, number);
Thread.Sleep(0);
//PayEvent.Set();//解锁付款线程
PayGetEvent.Set();//同时解锁付款和取书线程
}
}

/// <summary>
/// 付钱过程
/// </summary>
public static void PayMoneyProc()
{
while (true)
{
PayGetEvent.WaitOne();
//PayEvent.WaitOne();
Console.WriteLine("{0}：书本{1}", Thread.CurrentThread.Name, number);
Thread.Sleep(10);
//GetEvent.Set();//解锁取书线程
}
}

/// <summary>
/// 取书过程
/// </summary>
public static void GetBookProc()
{
while (true)
{
PayGetEvent.WaitOne();
PayGetEvent.Reset();//不加无限执行下去
//GetEvent.WaitOne();
Console.WriteLine("{0}：书本{1}", Thread.CurrentThread.Name, number);
Console.WriteLine("------------------------------------------");
Thread.Sleep(10);
buyResetEvent.Set();//解锁买书线程
}
}
}
}