Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
219 views
in Technique[技术] by (71.8m points)

c# - How to get the current task reference?

How can I get reference to the task my code is executed within?

ISomeInterface impl = new SomeImplementation();
Task.Factory.StartNew(() => impl.MethodFromSomeInterface(), new MyState());

...

void MethodFromSomeInterface()
{
    Task currentTask = Task.GetCurrentTask();    // No such method?
    MyState state = (MyState) currentTask.AsyncState();
}

Since I'm calling some interface method, I can't just pass the newly created task as an additional parameter.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Since you can't change the interface nor the implementation, you'll have to do it yourself, e.g., using ThreadStaticAttribute:

static class SomeInterfaceTask
{
  [ThreadStatic]
  static Task Current { get; set; }
}

...

ISomeInterface impl = new SomeImplementation();
Task task = null;
task = Task.Factory.StartNew(() =>
{
  SomeInterfaceTask.Current = task;
  impl.MethodFromSomeInterface();
}, new MyState());

...

void MethodFromSomeInterface()
{
  Task currentTask = SomeInterfaceTask.Current;
  MyState state = (MyState) currentTask.AsyncState();
}

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

1.4m articles

1.4m replys

5 comments

57.0k users

...