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C#并发编程经典实例(第2版)
book

C#并发编程经典实例(第2版)

by Stephen Cleary
November 2020
Intermediate to advanced
226 pages
5h 34m
Chinese
Posts & Telecom Press
Content preview from C#并发编程经典实例(第2版)
140
10
最后,考虑一下相反的情况吧。对于
System.Reactive
代码响应
CancellationToken
,即
CancellationTokenSource
取消请求被转化成丢弃订阅,本书已经就这种情况探讨过若干种
处理方式了。还可以反过来处理:发起取消请求,将其当作对丢弃处理的响应。
8.6
节曾提到,
FromAsync
StartAsync
SelectMany
都支持取消,这些运算符涵盖了绝大
多数的用例。
System.Reactive
也提供了
CancellationDisposable
类型,可以取消被丢弃的
CancellationToken
CancellationDisposable
是可以直接使用的,如下所示。
using
(
var
cancellation =
new
CancellationDisposable())
{
CancellationToken token = cancellation.Token;
// 将令牌传递给响应它的方法
}
// 令牌于此处取消
讨论
System.Reactive
有其自己的取消概念:丢弃订阅。本节探讨了若干种方式,旨在实现
System.Reactive
.NET 4.0
中引入的普适取消框架的协同操作。只要当前处于代码中的
System.Reactive
部分,那就使用
System.Reactive
订阅(或丢弃)系统吧。如果只引入了边
CancellationToken
支持,这就是最彻底的方式了。
参阅
8.5
节探讨
System.Reactive ...
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Publisher Resources

ISBN: 9787115550606