在主线程上做一些工作

Question

I'm in an application that has a lot of thread. In one of those thread, I need to run some lines on the main thread.

This is because windows XP frees I/O resources when the creator thread ends( Overlapped I/O ). I need to make instantiation in a Singleton creation.

How could I do this?

Before an off-topic answer:

This is not GUI related, so do not propose something like myControler.BeginInvoke since I've no GUI element

Answer 1

You can't just run some code on main thread, because it is probably busy doing something else. You need some framework for this task, and Windows UI messaging is an example of such framework.

If your application is non-ui, then you can implement a static message queue, put your delegate there, and continuously check that queue from the main thread, pooling the delegates from it and executing them.

However, the better approach would be to re-evaluate your applications architecture. Maybe you can isolate the work with the IO object to one thread.

Answer 2

I finally did this:

1. I added a BlockingCollection with all IPs I need to create
2. When I "start" my singleton, I just add my IPs in that collection
3. And I start a new thread, with the Background property to True, that iterate on this collection

This thread will not consume many resource since he will just be blocked on the wait of the next iteration, and it stays alive for the duration of the application.

I added a condition to do this for windows XP and lower.