Threading and Tasks in Chrome Contents Overview Threads Tasks Prefer Sequences to Threads Posting a Parallel Task Direct Posting to the Task Scheduler Posting via a TaskRunner Posting a Sequenced Task Posting to a New Sequence Posting to the Current…

There are many programs that can be used to extract bulk information from a web site, including browser extensions and some web services. Depending on your browser, tools like Readability (which helps extract text from a page) or DownThemAll (which a…

Concurrency However, becoming adept at concurrent programming theory and techniques is a step up from everything you've learned so far in this book, and is an intermediate to advanced topic. In practice, however, it's much easier to write concurrent…

VS Code 预览html页面的时候,默认需要在资源管理器中显示,再在浏览器中预览.今天介绍一下如何直接预览html页面. 方法一:自己配置快捷键 1.ctrl + shift + p 或者 F1 打开 命令面板,输入 Configure Task. 2.选择tasks.json,将里面的内容换成如下,version填写你自己的版本号,我的是2.0.0,command里面填写你的浏览器路径: { // See https://go.microsoft.com/fwlink/?LinkId=73…

线程同步技术: 解决多个线程争抢同一个资源的情况,线程协作工作.一份数据同一时刻只能有一个线程处理. 解决线程同步的几种方法: Lock.RLock.Condition.Barrier.semaphore 1)Lock 锁 锁,一旦线程获得锁,其它试图获取锁的线程将被阻塞. 当用阻塞参数设置为 False 时, 不要阻止.如果将阻塞设置为 True 的调用将阻止, 则立即返回 False;否则, 将锁定设置为锁定并返回 True. Lock的方法:acquire(blocking=True,ti…

Code Project精彩系列(转)   Code Project精彩系列(转)   Applications Crafting a C# forms Editor From scratch http://www.codeproject.com/csharp/SharpFormEditorDemo.asp 建立一个类似C#的环境, 实现控件拖拉,属性 Packet Capture and Analayzer 网络封包截获 http://www.codeproject.com/csharp/pa…

1.基本概念 并发和并行的区别: 1)并行,parallel 同时做某些事,可以互不干扰的同一时刻做几件事.(解决并发的一种方法) 高速公路多个车道,车辆都在跑.同一时刻. 2)并发 concurrency 同时做某些事,一个时段内有事情要处理.(遇到的问题) 高并发,同一时刻内,有很多事情要处理. 2.并发的解决 1)队列.缓冲区 排队就是把人排成队列,先进先出,解决了资源使用的问题. 排成的队列,其实就是一个缓冲地带,就是缓冲区. Queue模块的类queue.lifoqueue.prior…

System.Threading.Tasks.Parallel类提供了Parallel.Invoke,Parallel.For,Parallel.ForEach这三个静态方法. 1 Parallel.Invoke 尽可能并行执行所提供的每个操作,除非用户取消了操作. 方法: 1)public static void Invoke(params Action[] actions); 2)public static void Invoke(ParallelOptions parallelOption…

using Lemon.Common; using System; using System.Collections.Generic; using System.Linq; using System.Threading.Tasks; using System.Timers; using System.Web; namespace Lemon.Stats.Web.Service { public class SynchCacheDataService { /// <summary> /// 定时…

--------------------------------------------------------------后台代码------------------------------------------   public JsonResult ImportPDF(Int64 id)        {            try            {                Guid currentGuid = Guid.NewGuid(); if (Request.Fi…