DEV 220

What’s New In Visual C++® .NET 2003The Developer’s Power Tool

Kate Gregory

Gregory Consulting

Agenda

UpgradingPerformance ImprovementsSecurity FeaturesStandards ComplianceWindows Forms

Upgrading

Visual C++ 6.0, 2002 to 2003Project files open and convert to 2003

Some code workarounds no longer needed

Continue to write Windows-based applications and components

Target the CLR and incorporate the .NET Framework in new and existing code

…Quake

Performance ImprovementsNew and Improved Optimizations

/G7Pentium 4, AMD Athlon5-10% performance increase on average10-15% performance increase for heavy floating point (FP) variables

/arch:SSE/SSE2Minimal FP performance increase: 2-3%

Whole-program optimizationDead parameter removal

Optimizations

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Making Software SaferBuffer Overruns Are Expensive

Study: Code Red Costs Study: Code Red Costs

Top $2 billionTop $2 billion

New Apache New Apache worm starts to worm starts to spreadspread

Flaw leaves Linux Flaw leaves Linux computers vulnerablecomputers vulnerable

In Search of the In Search of the World’s Costliest World’s Costliest Computer VirusComputer Virus

(UPnP, Code Red, Apache (UPnP, Code Red, Apache Chunked Encoding Exploit) Chunked Encoding Exploit)

Code Red Virus ‘Most Code Red Virus ‘Most Expensive in History Expensive in History of Internet’ of Internet’

Security FeaturesRuntime Security Checks and /GS

Enhanced compiler feature: /GS/GS not “silver bullet”Buffers are allocated first on the stack to avoid overrunning the localsOS checks compiler-emitted table before jumping to exception handler, avoiding exception handler hijackingDetect overruns that overwrite function return address

/GSBuffer Security Checks

/RTCRuntime Checks

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Security FeaturesPerformance Impact

Expect less than a 2% degradation.Most applications will not notice. Improvements in optimization outweigh the cost of security checks.Each security check is 9 instructions.

““The perf hit hasn’t shown up for us. There was no test hit The perf hit hasn’t shown up for us. There was no test hit associated with the change. The only cost we’ve had associated with the change. The only cost we’ve had associated with this is getting ourselves to build with /GS.”associated with this is getting ourselves to build with /GS.” – – A Microsoft Internet Information Server (IIS) 6.0 DeveloperA Microsoft Internet Information Server (IIS) 6.0 Developer

Standards ComplianceOverview

75.00%75.00%

80.00%80.00%

85.00%85.00%

90.00%90.00%

95.00%95.00%

100.00%100.00%

6.06.0 20022002 20032003

98.11%98.11%

87.63%87.63%

81.03%81.03%

Standards ComplianceThe Problem Areas2.2 Unicode identifiers

3.4.2 Full Koenig lookup

8.5.1 Empty aggregate initialization

9.8 Symbol lookup for local member functions

11.4 Friends in class templates (also 14.5.3)

13.3.1.1.2 Implicit invocation of ptr-to-func conversions

13.3.3.2 Ranking of derived to base conversions

14 Export keyword

14.1 Non-type template parameters (also 14.3.2)

14.5.2 User-defined conversion templates

14.5.4 Partial specialization of class templates

14.5.5.2 Partial ordering of function templates

14.6 Dependent name lookup

14.7.1 Nested classes in class templates

14.7.3 Explicit specialization of member templates

15.4 Exception specifications

15.5.2 The unexpected() function

ANSI / ISO C++Standards Conformance

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Standards ComplianceFinal Comments

98% compliance means Visual C++ .NET 2003 is one of the most compliant compilers available

Visual C++ .NET 2003 is targeted at systems and performance-oriented development on Microsoft® Windows® and the .NET Framework

Full power of advanced templates

Work with key third-party libraries like Boost and Loki

Windows FormsRAD for C++

Changing properties changes codeNon-UI controls placed in separate trayVisual inheritanceIn-place menu editingVisual tab order editingAnchor, dock, AutoScroll, locked propertiesResize multiple controls

Windows Forms

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SummaryWhat Users Are Saying

“… Whole Program Optimization is ‘efficient’. The last time I tried it on Mathematica – using Intel’s C compiler – it churned for eight hours, ran out of virtual memory, and crashed. In VS .NET 2003, it is relatively speedy.” - David Librik, Mathematica

“Without MC++, we could not support .NET in Office. We are not rewriting Word in C#, and we are not using COM interop to talk between native and managed code when such a simple and straightforward way to do this exists in MC++. All of our code is in C and C++, why would we want to throw any of it away? We will continue to use and extend the code and skills we already have.” - Matt Ruhlen, Microsoft Office

“C++ increasingly means Visual C++” - Scott Meyers

Summary

Continue to write for native WindowsFull access to the .NET FrameworkYour skills and investments move forwardVisual C++ .NET 2003 continues forward as the high-end developer tool

Community Resources

Community Resourceshttp://www.microsoft.com/communities/default.mspx

Most Valuable Professional (MVP)http://www.mvp.support.microsoft.com/

NewsgroupsConverse online with Microsoft Newsgroups, including Worldwidehttp://www.microsoft.com/communities/newsgroups/default.mspx

User GroupsMeet and learn with your peershttp://www.microsoft.com/communities/usergroups/default.mspx

Suggested Reading And Resources

The tools you need to put technology to work!The tools you need to put technology to work!

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© 2003 Microsoft Corporation. All rights reserved.© 2003 Microsoft Corporation. All rights reserved.Microsoft, Visual C++, Visual Studio, the Visual Studio logo, Windows, the Windows logo, and SQL Server are either registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries. The names of actual companies and products mentioned herein may be the trademarks of their respective owners.This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.