.NET Parallel Programming

All about Async/Await, System.Threading.Tasks, System.Collections.Concurrent, System.Linq, and more…

2013 - .NET Parallel Programming

.NET memory allocation profiling and Tasks

April 4, 2013 Apr 4, 2013 04/4/13
Stephen Toub - MSFT
The .NET Framework blog published this morning a guest post from yours truly on .NET Memory Allocation Profiling with Visual Studio 2012.  As you're trying to improve the performance, throughput, and memory usage of code that uses Tasks, the described profiler in Visual Studio can be a valuable tool in your tool belt (of course, the ...

Tasks, Monads, and LINQ

April 3, 2013 Apr 3, 2013 04/3/13
Stephen Toub - MSFT
A few years back, Wes Dyer wrote a great post on monads, and more recently, Eric Lippert wrote a terrific blog series exploring monads and C#. In that series, Eric alluded to Task<TResult> several times, so I thought I’d share a few related thoughts on Task<TResult> and the async/await keywords.As both Wes and Eric highlight...

MVP Summit presentation on async

February 20, 2013 Feb 20, 2013 02/20/13
Stephen Toub - MSFT
Lucian Wischik and I presented an "async clinic" at the MVP Summit in Bellevue this week.  The async/await keywords in C# and Visual Basic drastically simplify asynchronous programming, but that of course doesn't mean that using them is without any gotchas: the goal of the discussion was to highlight some of the key areas in ...

Psychic Debugging of Async Methods

January 28, 2013 Jan 28, 2013 01/28/13
Stephen Toub - MSFT
These days it’s not uncommon for me to receive an email or read a forum post from someone concerned about a problem they’re experiencing with an async method they’ve written, and they’re seeking help debugging the issue.  Sometimes plenty of information about the bug is conveyed, but other times the communication ...

Cooperatively pausing async methods

January 13, 2013 Jan 13, 2013 01/13/13
Stephen Toub - MSFT
Recently I was writing an app that processed a bunch of files asynchronously.  As with the Windows copy file dialog, I wanted to be able to provide the user with a button that would pause the processing operation.To achieve that, I implemented a simple mechanism that would allow me to pass a “pause token” into the async method...