如何在TPL中为任务分配名称 [英] How can I assign a name to a task in TPL

问题描述

我将使用在我的应用程序上运行的许多任务.由于某些原因，每堆任务都在运行.我想为这些任务命名，以便当我看到并行任务"窗口时，可以轻松识别它们.

I'm going to use lots of tasks running on my application. Each bunch of tasks is running for some reason. I would like to name these tasks so when I watch the Parallel Tasks window, I could recognize them easily.

从另一个角度来看，请考虑我在框架级别使用任务来填充列表.使用我的框架的开发人员也在使用任务进行工作.如果她查看并行任务"窗口，则会发现一些不知道的任务.我想给任务命名，以便她可以区分框架任务和任务.

With another point of view, consider I'm using tasks at the framework level to populate a list. A developer that use my framework is also using tasks for her job. If she looks at the Parallel Tasks Window she will find some tasks having no idea about. I want to name tasks so she can distinguish the framework tasks from her tasks.

如果有这样的API，将非常方便:

It would be very convenient if there was such API:

var task = new Task(action, "Growth calculation task")

或者也许:

var task = Task.Factory.StartNew(action, "Populating the datagrid")

，甚至在使用 Parallel.ForEach

Parallel.ForEach(list, action, "Salary Calculation Task"

可以命名任务吗?

是否可以给‍‍ Parallel.ForEach 一个命名结构(也许使用lambda)，以便它使用该命名来创建任务?

Is it possible to give ‍‍‍Parallel.ForEach a naming structure (maybe using a lambda) so it creates tasks with that naming?

我缺少某个地方的API吗?

Is there such API somewhere that I'm missing?

我还尝试过使用继承的任务来覆盖它的ToString().但是不幸的是，并行任务"窗口未使用ToString()！

I've also tried to use an inherited task to override it's ToString(). But unfortunately the Parallel Tasks window doesn't use ToString()!

class NamedTask : Task
{
    private string TaskName { get; set; }
    public NamedTask(Action action, string taskName):base(action)
    {
        TaskName = taskName;
    }

    public override string ToString()
    {
        return TaskName;
    }
}

推荐答案

您不能真正命名 Task ，但是可以命名由 Task执行的方法，然后在并行任务"窗口中显示.因此，如果命名 Task 对您来说很重要，请不要使用lambda，而应使用常规的命名方法.

You can't really name a Task, but you can name the method which is executed by a Task, which is then shown in the Parallel Tasks windows. So, if naming the Tasks is important for you, don't use lambdas, use normal named methods.

令人惊讶的是，即使 Task 并没有直接执行您的方法，这也适用于 Parallel .我认为这是因为并行任务以某种方式从 Parallel 了解了 Task s并以不同的方式处理它们.

Surprisingly, this works even with Parallel, even though there the Task isn't executing your method directly. I think this is because Parallel Tasks somehow knows about Tasks from Parallel and handles them differently.

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