.NET Parallel Programming

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

2011 - Page 3 of 4 - .NET Parallel Programming

Quick microbenchmarks in Visual Studio with Code Snippets

June 29, 2011 Jun 29, 2011 06/29/11
Stephen Toub - MSFT
Parallelism is all about performance.  After all, in the majority of cases, introducing parallelism into code adds some level of complexity, and the primary reason we’re ok with that additional complexity is because we get great performance enhancements as a result.  As such, as we develop our parallel runtimes and libraries to...

Using Tasks to implement the APM Pattern

June 27, 2011 Jun 27, 2011 06/27/11
Stephen Toub - MSFT
Several times recently, folks have asked how to use tasks to implement the APM pattern, otherwise known as the Asynchronous Programming Model pattern, or the IAsyncResult pattern, or the Begin/End pattern.  While moving forward we encourage folks to use a Task-based pattern for exposing asynchronous operation, the APM pattern has been the...

More case studies on .NET 4 parallelism support

May 3, 2011 May 3, 2011 05/3/11
Stephen Toub - MSFT
When .NET 4 was launched, we blogged about several case studies published regarding usage of .NET 4 to parallelize applications.  Quite recently, several additional case studies have been published.  I love reading these in order to better understand how folks are applying this technology, and parallelism in general, to improve their...

Static constructor deadlocks

May 3, 2011 May 3, 2011 05/3/11
Igor Ostrovsky - MSFT
One important fact to know about static constructors is that they effectively execute under a lock. The CLR must ensure that each type is initialized exactly once, and so it uses locking to prevent multiple threads from executing the same static constructor. A caveat, however, is that executing the static constructor under ...

Presentation on TPL Dataflow in financial applications

May 2, 2011 May 2, 2011 05/2/11
Stephen Toub - MSFT
Matt Davey from Lab49 presented at the Waters North American Trading Architecture Summit April 2011 on using TPL Dataflow in trading solutions.  You can see his slide deck at http://www.slideshare.net/mattdotdavey/waters-north-american-trading-architecture-summit-april-2011. It's awesome to see the technology being used effectively to ...

TPL Dataflow CTP Refresh

April 13, 2011 Apr 13, 2011 04/13/11
Stephen Toub - MSFT
Today, we released a new CTP of TPL Dataflow, otherwise known as System.Threading.Tasks.Dataflow.dll.  You can download this as part of the Microsoft Visual Studio Async CTP, which will also install the new C#/Visual Basic support for writing asynchronous methods, or you can install the DLL itself through the installer available on the ...

Little-known gems: Atomic conditional removals from ConcurrentDictionary

April 2, 2011 Apr 2, 2011 04/2/11
Stephen Toub - MSFT
ConcurrentDictionary<TKey,TValue>, first introduced in .NET 4, is an efficient dictionary data structure that enables thread-safe reading and writing, meaning that multiple threads may all be accessing the dictionary at the same time without corrupting it.  It supports adding through its TryAdd method, conditional updates through ...