Shared Source Common Language Infrastructure Taking .NET Across Platforms

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Shared Source Common Language InfrastructureTaki
ng .NET Across Platforms!

• Tarun Anand
• Janakiram MSV

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Agenda

• Tour of Microsoft .NET
• What is Rotor?
• Internals of Rotor
• Extending Rotor
• Q A

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Agenda

• Tour of Microsoft .NET
• What is Rotor?
• Internals of Rotor
• Extending Rotor
• Q A

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Design Goals of Microsoft .NET

• Language Independent
• High Performance JIT Compiler
• Reusable APIs (.NET Framework)
• Secure Platform
• Version Resilient
• Consistent Platform from Server to Devices
• (Potentially) Platform Independent

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.NET is Specification Based

• CLI Common Language Infrastructure
• CTS Common Type System
• CLS Common Language Specification
• CIL Common Intermediate Language
• C Modern Object Oriented Language
• All the above are submitted to ECMA and ISO

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Microsoft .NETExecution Model
Source code
Managed code
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Current Implementations

• .NET Framework V1
• Commercial
• Runs on Win9x to Win.NET
• Proven
• .NET Compact Framework
• Commercial
• Targets devices like PDA and memory Constrained
  gadgets like phones
• Based on profiles
• Currently in Beta1, will be RTMd later this year

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Agenda

• Tour of Microsoft .NET
• What is Rotor?
• Internals of Rotor
• Extending Rotor
• Q A

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What is Rotor?

• Code name for cross-platform implementation of
  .NET
• Current ECMA standard
• Proposed ISO standard
• Encourages portability
• Proof-of-Concept from Microsoft
• Currently supported on FreeBSD and Windows XP

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Agenda

• Tour of Microsoft .NET
• What is Rotor?
• Internals of Rotor
• Extending Rotor
• Q A

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Rotor Project

• Packaged as single 11MB compressed file archive
• 1.9 million lines of code
• 1.15M of C and C
• 625K of C
• 125K of CIL (intermediate language)
• 5900 source files (9700 total)
• Build output
• 1200 defined types
• About 20 dynamically loadable libraries
• About 22 executable programs

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Platform Adoption Layer

• Mini operating environment based on Win32
  semantics
• Threading, SEH, IO and Debugging
• Gets compiled first and provides the runtime for
  compilers, tools and the execution engine
• Rotors portability heavily relies on PAL
• Porting PAL and JIT engine is porting CLR
• Made up of rotor_pal and rotor_palrt

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Rotor- The Big Picture
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Assembly Execution
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The Shared Source CLI (Rotor)
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Relationship of Shared Source CLIand .NET
Frameworks (CLR)

• .NET Framework gtRotorgtCLI
• Shared source CLI implementation differs
• JIT and garbage collector replaced with more
  portable, more approachable, implementations
• Many Windows-specific features not included COM
  interop, WinForms, and other integration
• Commercial features not included, such as
  ADO.NET, enterprise services, NGEN (JIT-ahead),
  and ASP.NET

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Agenda

• Tour of Microsoft .NET
• What is Rotor?
• Internals of Rotor
• Extending Rotor
• Q A

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GUI with Rotor

• Platform Independent GUI (PIGUI) based on Tcl/Tk
• Need Tcl 8.3 or higher in the path
• Based on PInvoke and wrapped in
  SharedSourceCLI.TK.dll
• Object wrapper in development
• Execution based on Delegates

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Some Interesting Projects

• Data Access
• Web Services
• X-Windows Application
• C IDE
• Remote Administration Tools
• CLR Hosting

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Demo

• Under the hood.

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Summary

• Rotor is a great platform for experimentation
• SSCLI is a subset of .NET Framework and superset
  of ECMA CLI specs.
• PAL makes the CLI truly portable
• Rotor has a pluggable architecture and is
  extensible
• Start Rotoring today!
• http//msdn.microsoft.com/net/ecma

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• Questions ?