.NET Parallel Programming

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

Task Parallel Library - .NET Parallel Programming

ParallelExtensionsExtras Tour – #15 – Specialized Task Waiting

May 4, 2010 May 4, 2010 05/4/10
Stephen Toub - MSFT
(The full set of ParallelExtensionsExtras Tour posts is available here.)The Task Parallel Library provides the Task.Wait method, which synchronously waits for the target Task to complete.  If the Task completed successfully, the method simply returns.  If the Task completed due to an unhandled exception or cancellation, Wait throws ...

A TPL Sandbox

May 3, 2010 May 3, 2010 05/3/10
Danny Shih
In a previous post, we introduced the UnobservedTaskException event, saying that it would be useful for host-plugin scenarios where a host application should continue to execute in the presence of exceptions thrown by buggy plugins.  A typical example is an Internet browser; should the entire application crash if some rich content plugin ...

ParallelExtensionsExtras Tour – #14 – SingleItemPartitioner

April 28, 2010 Apr 28, 2010 04/28/10
Stephen Toub - MSFT
(The full set of ParallelExtensionsExtras Tour posts is available here.) In a previous ParallelExtensionsExtras Tour blog post, we talked about implementing a custom partitioner for BlockingCollection<T>.  Custom partitioning is an advanced but important feature supported by both Parallel.ForEach and PLINQ, as it allows the ...

ParallelExtensionsExtras Tour – #13 – AsyncCall

April 27, 2010 Apr 27, 2010 04/27/10
Stephen Toub - MSFT
(The full set of ParallelExtensionsExtras Tour posts is available here.)Producer/consumer scenarios could logically be split into two categories: those where the consumers are synchronous, blocking waiting for producers to generate data, and those where the consumers are asynchronous, such that they're alerted to data being available and only ...

ParallelExtensionsExtras Tour – #12 – AsyncCache

April 23, 2010 Apr 23, 2010 04/23/10
Stephen Toub - MSFT
(The full set of ParallelExtensionsExtras Tour posts is available here.)Caches are ubiquitous in computing, serving as a staple of both hardware architecture and software development.  In software, caches are often implemented as dictionaries, where some data is retrieved or computed based on a key, and then that key and its resulting ...

A Tour of Various TPL Options

April 19, 2010 Apr 19, 2010 04/19/10
Igor Ostrovsky - MSFT
The Task Parallel Library (TPL) exposes various options that give you more control over how tasks get scheduled and executed: Joseph E. Hoag's article A Tour of Various TPL Options explains these options in detail, accompanied by examples of correct and incorrect uses.(This paper and many more are available through the Parallel ...

ParallelExtensionsExtras Tour – #7 – Additional TaskSchedulers

April 9, 2010 Apr 9, 2010 04/9/10
Stephen Toub - MSFT
(The full set of ParallelExtensionsExtras Tour posts is available here.)In our last two ParallelExtensionsExtras blog tour posts, we’ve discussed two TaskScheduler implementations in ParallelExtensionsExtras: StaTaskScheduler and ConcurrentExclusiveInterleave.  These are just 2 of more than 10 schedulers in ParallelExtensionsExtras...

ParallelExtensionsExtras Tour – #6 – ConcurrentExclusiveInterleave

April 8, 2010 Apr 8, 2010 04/8/10
Stephen Toub - MSFT
(The full set of ParallelExtensionsExtras Tour posts is available here.)   As mentioned in the previous ParallelExtensionsExtras blog tour post, the Task Parallel Library (TPL) supports an extensible task scheduling mechanism, and we demonstrated how an StaTaskScheduler could be implemented that scheduled tasks onto custom STA ...