哔哩哔哩网站分析,一地址和二地址,莱芜规划,网站建设排名优化公司Task Parallel Library: 1 of n http://www.codeproject.com/Articles/152765/Task-Parallel-Library-of-n Task 与Thread#xff0c; lambda, action,funct之间有什么关联。 Task相比Thread提供了什么方便之处。 Thread 1. 创建费时间#xff0c;占用内存与CPU的资源 For …Task Parallel Library: 1 of n http://www.codeproject.com/Articles/152765/Task-Parallel-Library-of-n Task 与Thread lambda, action,funct之间有什么关联。 Task相比Thread提供了什么方便之处。 Thread 1. 创建费时间占用内存与CPU的资源 For example, when a new Thread is started in .NET, there is a whole process that goes with that, such as creating queues, thread local storage, managing the Threads lifecycle etc. This takes time ThreadPool 1. ThreadPool 免去了创建thread的时间用户直接将work item 委托给ThreadPool去安排其内部的线程调用。 2. 但classic threading ThreadPool当一个work item已经在执行当中用户不能去直接关闭想得到其的结果也是很直接。 However, even using the classic threading ThreadPool, there were problems in that you could not cancel a work item once it has been queued with the ThreadPool, or get a return result that easily. It just doesnt read that well either. There is an excellent article here on CodeProject that tackles some of these issues: Smart ThreadPool, which is pretty excellent actually. However, the new TPL infrastructure has got all these problems covered, and many many more useful features in my opinion. Task 1. the new TPL infrastructure has got all these problems covered, and many many more useful features in my opinion Task 继承了ThreadPool的优点解决了ThreadPool的问题。其本质也可以讲Smart ThreadPool 2. A TPL Task actually uses the ThreadPool internally. Task, ThreadPool, Thread, Scheduler It is worth mentioning that Tasks are merely wrappers for passing a delegate of work to be done, also storing state, exceptions, and continuations amongst others. That work may or may not be done by the threadpool, and as already stated, that will depend upon the scheduler used. 常用的使用场景 Tasks also seem to be more inline with how people think about things. For instance, imagine this scenario: I want to call a Web Service and have it return a Listint. Using a TPL Task, I would create a TaskListint and get it to call some service in its payload delegate (which will use the ThreadPool) that returned me a Listint. Task与UI Thread reate/cancel Tasks and handle Exceptions转载于:https://www.cnblogs.com/pengxinglove/p/5452799.html
