单线程到多线程应用程序 [英] Single thread to multi-threaded application

问题描述

何时应在应用程序中使用线程.换句话说，何时应该将单线程应用程序转换为多线程应用程序. 作为开发人员，我认为阻止您的应用程序顺利运行的任务.该任务可以由线程处理.就像我们正在不断获取GPS数据一样. 我认为，还有其他更多原因可以在您的应用程序中创建线程.请分享您的意见.

When we should use threads in our application. In other words, when should I convert a single threaded application to multi-threaded application. Being a developer, I think the task which is preventing to your application to run smoothly. That task can be handled by a thread. Like we are the getting GPS data Continuously. I think, there are other more reasons to create thread in your application. Please share your opinion.

谢谢.

推荐答案

原因我可以想到的是(
我确信还有更多):
1.将一批工作分担给工作线程，以便您的程序可以继续响应用户输入，或者可以继续运行不依赖于该工作的其他代码.
2.处理I/O，特别是响应时间可变或未知的服务器和网络通信.
3.并行处理数据，您可以在其中将工作细分为离散的非相关工作单元
4.与计时器相关的工作，即每500毫秒检查一次x是否已更改"

Reasons I can think of off the top of my head ( and I'm sure there are more ) are :
1. Offloading a batch of work to a worker thread so your program can either continue responding to user input or so you can carry on running other code that doesn't rely on that work.
2. Handling I/O particularly server and network communication where the response time is variable or unknown.
3. Parallel processing of data where you can sub-divide the work down into discrete non-dependant units of work
4. Timer related work i.e 'every 500ms check if x has changed'

但是，切换到多线程或并发编程并非没有陷阱，特别是如果那些线程需要访问共享数据时，那么关于线程同步！

However, switching to multi-threaded or concurrent programming is not without it's pitfalls particularly if those threads need to access shared data hence the number of questions on SO about mutexes and thread synchronisation!

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