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Improvements to NGen in CLR 4

Surupa Biswas has a post in the CodeGen team blog on new features in NGen coming out as part of CLR 4. The post covers NGen SxS (that's side-by-side) and multi-proc NGen, and goes into detail on the work that went into making Targeted Patching possible. Read the post here...

More Channel 9 videos

We have more Channel 9 videos from the CLR team for your enjoyment! The Base Class Libraries (BCL) team talks about some of the new features in the next version of BCL over here. We have Maoni Stephens and Andrew Pardoe talking about Background Garbage Collection over here. The CLR Debugger team talks about new debugging and profiling ...

Channel9 Video on Background GC

A couple of weeks back my PM and I did a channel9 video on Background GC. Take a look: https://channel9.msdn.com/shows/Going+Deep/Maoni-Stephens-and-Andrew-Pardoe-CLR-4-Inside-Background-GC...

Tail Call Improvements in CLR 4

Now that .Net 4 Beta1 is out, you'll see a number of posts on this blog covering new CLR features in CLR 4. Grant Richins, a developer on our team, wrote a post on tail call improvements in CLR 4 at the CLR Code Generation blog. The post deals with JIT ETW Tracing in .Net 4 and specifically covers new ETW events exposed by the JIT. ...

Visual Studio 2010 and ASP.Net 4.0 (Beta1)

The public release of Visual Studio 2010 Beta 1 is now available and can be downloaded here. This is one of the most compelling updates to Visual Studio we’ve seen in years.  The entire IDE has been refreshed with a new look and all the code editors including the HTML and ASPX editors have replaced with a new extensible editor based ...

Channel 9 Video – Vance Morrison: CLR Through the Years

Vance Morrison, a CLR architect, recently gave an interview to Channel 9 where he walks through the history of the CLR (he's been on our team since it's very beginning), the upcoming version, his favorite features in CLR v4, and what the future looks like. He also talks about concurrency (and the role that CLR plays), ...

The Conditional Weak Table: Enabling Dynamic Object Properties

The Dynamic Language Runtime allows you to implement a dynamic language (such as Ruby or Python) on top of the CLR. There are a lot of challenges to making everything work right. One particularly difficult aspect was enabling Ruby to attach arbitrary "properties" to instanced .NET managed objects at runtime. If a Ruby developer sets an ...

Why is AppDomain.AppendPrivatePath Obsolete?

This is the first in a series of posts where we discuss the reasoning behind “obsoleting” specific APIs. If you use AppDomain.AppendPrivatePath, or look at MSDN, you’ll notice it’s obsolete.  This frustrates people because the alternative suggested (AppDomainSetup.PrivateBinPath) requires you to do something ...

How CLR maps SEH exceptions to managed exception types

Managed exception handling is built on Windows OS’s Structured Exception Handling, commonly referred to as SEH (to learn more about SEH, please read Matt Pietrek’s excellent article first). This implies that CLR understands how to interoperate between SEH and managed exception systems, which is a very key point since SEH is based upon the ...