C# 线程同步示例

最新推荐文章于 2022-08-24 10:47:30 发布

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本文通过示例代码介绍了C#中三种线程同步方法：Lock、Mutex和Monitor的使用方式。通过创建多个线程并使用共享资源进行操作，演示了如何确保线程安全。

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

namespace ThreadLockMutexMonitor
{
class Program
{
static void Main(string[] args)
{
LockStartThread();
//MutexStartThread();
//MonitorStartThread();
}

#region startThread

static void LockStartThread()
{
Thread lockThread1 = new Thread(LockThreadFunc1);
Thread lockThread2 = new Thread(LockThreadFunc2);
lockThread1.Start();
lockThread2.Start();
}

static void MutexStartThread()
{
Thread thread1 = new Thread(MutexF1);
Thread thread2 = new Thread(MutexF2);
thread1.Start();
thread2.Start();
}

static void MonitorStartThread()
{
Thread thread1 = new Thread(MonitorF1);
Thread thread2 = new Thread(MonitorF2);
thread1.Start();
thread2.Start();
}

#endregion

static object obj = new object();

#region LockTest

static void LockThreadFunc1()
{
lock (obj)
{
for (int i = 0; i < 10; i++)
{
lock (obj)
{
Func("LockThreadFunc1");
}
}
}
}

static void LockThreadFunc2()
{
lock (obj)
{
for (int i = 0; i < 10; i++)
{
lock (obj)
{
Func("LockThreadFunc2");
}
}
}
}

#endregion

#region MutexTest

static Mutex m = new Mutex();
static void MutexF1()
{
m.WaitOne();
for (int i = 0; i < 10; i++)
{
m.WaitOne();
Func("MutexF1");
m.ReleaseMutex();
}
m.ReleaseMutex();
}

static void MutexF2()
{
m.WaitOne();
for (int i = 0; i < 10; i++)
{
m.WaitOne();
Func("MutexF2");
m.ReleaseMutex();
}
m.ReleaseMutex();
}

#endregion

#region MonitorTest

static void MonitorF1()
{
Monitor.Enter(obj);
for (int i = 0; i < 10; i++)
{
Monitor.Enter(obj);
Func("MonitorF1");
Monitor.Exit(obj);
}
Monitor.Exit(obj);
}

static void MonitorF2()
{
Monitor.Enter(obj);
for (int i = 0; i < 10; i++)
{
Monitor.Enter(obj);
Func("MonitorF2");
Monitor.Exit(obj);
}
Monitor.Exit(obj);
}

#endregion

/// <summary>
/// 测试方法
/// </summary>
/// <param name="str"></param>
static void Func(string str)
{
Console.WriteLine("{0},{1}", str, DateTime.Now.Millisecond.ToString());
Thread.Sleep(500);
}
}
}