So as I mentioned in the previous post, all this work to build lockless queues is really a waste of time. Why, well to answer that question we need something to compare it against. Thus the class below derives from Queue and provides the locking necessary to make the queue thread-safe (well, not thread safe, [...]
Again building upon the code from the previous post, this iteration provides some a little more usability. By way of providing a timeout you can TryDequeue and it will do the polling loop for you. If your wondering why I chose to use a polling loop rather than an event signal, I’ll clarify that in [...]
Following up on the previous post we are now going to modify the LocklessQueue<T> to allocate a class for an array of items rather than just a single item. Most of this work will be in the Item class itself with a few changes to the Enqueue method. Again we have to ensure that both [...]
From time to time I see posts about removing the use of lock() from producer/consumer queues where the number of threads operating are limited. This is an exploration into writing such a queue, the techniques used, and how to create the thread interactions without the use of locks. Step 1 – Building the first thing [...]
My last post reguarding “Deadlocks and other issues with Invoke / BeginInvoke” was something of a rant on the subject of WinForms and multi-threading. I thought I’d post on the useage of the solution that was presented originally on the stackoverflow article. The following defines the interface portion of the class: public class EventHandlerForControl<TEventArgs> where [...]
This ‘helpful’ (using this term loosely) post is for those you considering adding multi-threaded code to your application. The intended audience is developers with less than mastery-level (10+ years) multi-threading experience. The first question your up against is: Do I need multi-threading in my application? The answer is an emphatic NO you don’t. If you accept this [...]
For the past few days I’ve been working on a solution to a problem in WinForms. Most people are not aware of the following: The “threading api” methods of the Control class are not thread safe. This includes calls to InvokeRequired, Invoke, BeginInvoke, and even EndInvoke. What do I mean by “not thread safe”? The [...]