Parallel Extensions Archives | Page 2 of 22

Implementing Then with Await

Stephen Toub - MSFTAugust 15, 2012Aug 15, 201208/15/12

In a post a while ago, I talked about sequential composition of asynchronous operations. Now that we have the async/await keywords in C# and Visual Basic, such composition is trivial, and async/await are indeed the recommended way to achieve such composition with these languages.However, in that post I also described a few “Then&...

Processing tasks as they complete

Stephen Toub - MSFTAugust 2, 2012Aug 2, 201208/2/12

Recently I’ve had several folks ask me about how to process the results of tasks as those tasks complete.A developer will have multiple tasks representing asynchronous operations they’ve initiated, and they want to process the results of these tasks, e.g. List<Task<T>> tasks = …; foreach(var t in tasks...

Using async/await in WinRT async operations

Stephen Toub - MSFTJune 14, 2012Jun 14, 201206/14/12

Several weeks ago, I wrote a post for the Windows 8 app developer blog that was all about using await and AsTask to consume WinRT async operations. I've now published a follow-up post that's all about exposing .NET tasks as WinRT async operation. In a sense, you can think about the first post as showing how to convert from ...

Performance consideration for Async/Await and MarshalByRefObject

Stephen Toub - MSFTMay 31, 2012May 31, 201205/31/12

In the previous "What's New for Parallelism in Visual Studio 2012 RC" blog post, I mentioned briefly that for the .NET 4.5 Release Candidate, StreamReader.ReadLineAsync experienced a significant performance improvement over Beta. There's an intriguing story behind that, one I thought I'd share here.It has to do with some interesting...

What’s New for Parallelism in Visual Studio 2012 RC

Stephen Toub - MSFTMay 31, 2012May 31, 201205/31/12

In September, I blogged about what was new for parallelism and asynchrony in the Visual Studio 2012 Developer Preview, and in February I followed that up with a post on what was new in the Beta. Now that Visual Studio 2012 Release Candidate is out, I want to share a few thoughts on what’s new in the Release Candidate.Most new ...

ConcurrentQueue holding on to a few dequeued elements

Stephen Toub - MSFTMay 8, 2012May 8, 201205/8/12

Since .NET 4’s release, I’ve received several questions about a peculiar behavior of ConcurrentQueue<T> having to do with memory management.With Queue<T>, List<T>, and other such data structures in the .NET Framework, when you remove an element from the collection, the collection internally wipes out its reference...

Async Targeting Pack for Visual Studio 11 now available for .NET 4 and Silverlight 5

Stephen Toub - MSFTApril 26, 2012Apr 26, 201204/26/12

We’re happy to announce that you can now download an Async Targeting Pack for Visual Studio 11 that lets you target .NET 4 and Silverlight 5. The included DLLs address the previously discussed issue of the Visual Studio 11 Beta compilers being incompatible with the AsyncCtpLibrary* DLLs from the Async CTP; with this targeting pack...

Using await with WinRT async operations

Stephen Toub - MSFTApril 24, 2012Apr 24, 201204/24/12

Over on the Windows 8 app developer blog, I've written a blog post about using await with WinRT. I hope you enjoy it...

Should I expose synchronous wrappers for asynchronous methods?

Stephen Toub - MSFTApril 13, 2012Apr 13, 201204/13/12

In a previous post Should I expose asynchronous wrappers for synchronous methods?, I discussed “async over sync,” the notion of using synchronous functionality asynchronously and the benefits that doing so may or may not yield. The other direction of “sync over async” is also interesting to explore. Avoid Exposing ...

Async/Await FAQ

Stephen Toub - MSFTApril 12, 2012Apr 12, 201204/12/12

From time to time, I receive questions from developers which highlight either a need for more information about the new “async” and “await” keywords in C# and Visual Basic. I’ve been cataloguing these questions, and I thought I’d take this opportunity to share my answers to them.Conceptual OverviewWhere can ...

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