多线程线程池最大线程数

2018-08-18 09:10:01 425 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

Linux内核同步原语之队列自旋锁（Queued Spin Lock）深度解析本文深度解析了Linux内核中的队列自旋锁（Queued Spin Lock）机制。通过对比传统自旋锁的瓶颈，详细阐述了队列自旋锁如何利用紧凑的4字节结构、每CPU节点数组和pending位优化，有效解决多核（SMP）系统中的缓存行乒乓和惊群效应，实现公平、高效的锁等待队列，从而显著提升内核在高并发场景下的可扩展性与性能。阅读详情

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Threading;



namespace ThreadTest

{

    public partial class Form1 : Form

    {

        public Form1()

        {

            InitializeComponent();

        }



        private void button1_Click(object sender, EventArgs e)

        {

            

            for (int i = 0; i < 10; i++)

            {

                Thread.Sleep(1);

                ThreadPool.QueueUserWorkItem(DoWork, i);

            }

        }

        private void DoWork(object o)

        {

            Thread.Sleep(1000);

            int id=Thread.CurrentThread.ManagedThreadId;

            int userThread, ioThread;

            ThreadPool.GetAvailableThreads(out userThread,out ioThread);

            int userMaxThread, ioMaxThread;

            ThreadPool.GetMaxThreads(out userMaxThread, out ioMaxThread);

            this.Invoke(new Action(() => {

                textBox1.Text = string.Format("{0}111i:{1} ID:{2} HashCode:{3} Aviad:{4} IO:{5}\r\n", textBox1.Text,

                    o.ToString(), id,

                    Thread.CurrentThread.GetHashCode(), userThread, userMaxThread);

                textBox1.SelectionStart = textBox1.TextLength;

                textBox1.ScrollToCaret();

            }));



            for (int k = 0; k < 10; k++)

            {

                ThreadPool.SetMaxThreads(10, 1);

                ThreadPool.QueueUserWorkItem(DoWork2, k);

            }

        }



        private void DoWork2(object o)

        {

            Thread.Sleep(100);

            int id = Thread.CurrentThread.ManagedThreadId;

            int userThread, ioThread;

            ThreadPool.GetAvailableThreads(out userThread, out ioThread);

            int userMaxThread, ioMaxThread;

            ThreadPool.GetMaxThreads(out userMaxThread, out ioMaxThread);

            this.Invoke(new Action(() =>

            {

                textBox1.Text = string.Format("{0}222i:{1} ID:{2} HashCode:{3} Aviad:{4} IO:{5}\r\n", textBox1.Text,

                    o.ToString(), id,

                    Thread.CurrentThread.GetHashCode(), userThread, userMaxThread);

                textBox1.SelectionStart = textBox1.TextLength;

                textBox1.ScrollToCaret();

            }));

        }



        private void Form1_Load(object sender, EventArgs e)

        {

            ThreadPool.SetMaxThreads(10, 1);

        }



        

    }

}