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XobotOS - Android ported to C#

C# 24.92% C++ 0.39% Java 74.36% Shell 0.02% Perl 0.01% Python 0.02% OpenEdge ABL 0.06% HTML 0.23% Makefile 0.01%

xobotos's Introduction

XobotOS project
===============

XobotOS is a Xamarin research project that explored porting Android
4.0 from Java/Dalvik to C# to explore the performance and memory
footprint benefits of C#.

XobotOS is a semi-automated port of the Android 4.0 source code from
Java to C#.  The automated parts were ported using an improved version
of Sharpen that can compile more advanced Java constructs and supports
generics.  Most of the manual bits of code fall in two categories (a)
code to integrate with the host operating system and (b) replace the
Java JNI code used to call into C, with the ECMA CLI P/Invoke
functionality.

License
=======

The various components of XobotOS are licensed under the same license
as their upstream providers.  The C# versions of Android is licensed
under the terms of the Apache 2 license, while the improved version of
Sharpen is licensed under the GPL.

XobotOS Source Code
===================

XobotOS is made up of the following sources:

   sharpen:

	* Our updated version of Sharpen, see below for changes.

   android/generated:

	* Fully translated Java to C# code, classes that have been
	  translated in this way contain the attribute [Sharpen.Sharpened]

	* Empty C# stubs based on the Java declaration: these are
          needed as intermediate steps to get things to build in the
          new C# world.  Classes with empty stubs are decorated with
          the [Sharpen.NakedStub] attribute

    android/extra-sources:

	* Custom written code that either fine tunes the port,
          provides an alternative optimized version to a class or
          provides a runtime facility.

    android/api:

	* XML files that describe the translation process from Java to C#.

    android/upstream:

	* Google's Android 4.0 source code.

    libxobotos:

	* Glue code to integrate with various Android C++ libraries as
          well as the Linux X11 host that sets up the toplevel window
          and the optional OpenGL context.

	* Mostly calls into Skia, Jpeg, OpenGL and ICU libraries.

    binaries:

	* Libraries to get you started without requiring you to build Skia,
	  and other native Android tools.

	* Screenshots, videos, and some basic precompiled samples.

    monodevelop:

        * Add-in to build native XobotOS applications with MonoDevelop

    samples:

	* Ported samples to C# using XobotOS

    external:

	* Native libraries needed to build the unmanaged libxobotos C library

Sharpen
=======

The outcome of this project is a vastly improved Sharpen tool that is
able to port very sophisticated and advanced Java codebases from Java
to C#.   This code lives in the "sharpen" directory.

This modified version of Sharpen can cope with the following enhancements:

	* Java generics

	* XML-driven translation process

	* Type remapping for native Java types to C# types, and supports
	  for custom type mappings.

	* Support for translating code that does native interop

	* Support for generating C's .c and .h files for native glue
          (to assist in P/Invoke support)

	* Add attribute-supported translations

	* Improved incremental compilation

Documentation on the improved Sharpen engine will be posted in the
future so other developers can more easily port Java code to C#.

Support 
=======

This code is provided as-is, and we do not offer support for any bits
of code here, nor does Xamarin plan on continuing evolving XobotOS at
this point.

xobotos's People

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xobotos's Issues

This adds nothing to the original/linked issue. Closing as duplicate.

Originally posted by @conceptdev in xamarin/ios-samples#381 (comment)

Licensing and c# java util

Well, you did an awesome job. And what's also great is that you provide some implementation, in c#, of the java.util class. I'm actually interested in using them, and was wondering what license applies to this files.

Thanks in advance.

Compiling android project errors (java.lang.OutOfMemoryError: Java heap space)

xobot-os-report

Cannot compile android project.

Environment:
MacOSX

Eclipse 
Eclipse Java EE IDE for Web Developers.


Version: Juno Release
Build id: 20120614-1722

Steps:
loaded

Building android

Multiple problems have occurred
An interal error occurred during : "Build Project"

Build Project :
An internal error occurred during: "Build Project".
Java heap space

Building Workspace:
An internal error occurred during: "Building Workspace".
Java heap space

log:
[10:10:49] Starting build
[10:10:52] Converting 2812 files (must parse 2812).
[10:10:52] Parsing 2812 compilation units.
[10:13:09] Conversion finished successfully at Fri Jul 20 10:13:07 CEST 2012 (141 seconds).

Event
Error
Message=An internal error occurred during: "Build Project".
StackTrace=
java.lang.OutOfMemoryError: Java heap space
at org.eclipse.jdt.core.dom.ASTConverter.convertType(ASTConverter.java:3123)
at org.eclipse.jdt.core.dom.ASTConverter.convert(ASTConverter.java:785)
at org.eclipse.jdt.core.dom.ASTConverter.convert(ASTConverter.java:454)
at org.eclipse.jdt.core.dom.ASTConverter.buildBodyDeclarations(ASTConverter.java:183)
at org.eclipse.jdt.core.dom.ASTConverter.convert(ASTConverter.java:2656)
at org.eclipse.jdt.core.dom.ASTConverter.convert(ASTConverter.java:1219)
at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:885)
at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:581)
at org.eclipse.jdt.core.dom.ASTParser.createASTs(ASTParser.java:894)
at sharpen.xobotos.XobotBuilder.stage1_parse(XobotBuilder.java:377)
at sharpen.xobotos.XobotBuilder.run(XobotBuilder.java:147)
at sharpen.xobotos.XobotBuilder.run(XobotBuilder.java:232)
at sharpen.xobotos.builder.SharpenBuilder.build(SharpenBuilder.java:156)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
at org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:513)
at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:432)
at org.eclipse.ui.actions.BuildAction$1.runInWorkspace(BuildAction.java:305)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Message=An internal error occurred during: "Building Workspace".
Stack=
java.lang.OutOfMemoryError: Java heap space

!SESSION 2012-07-20 10:05:41.241 -----------------------------------------------
eclipse.buildId=I20120608-1400
java.version=1.6.0_31
java.vendor=Apple Inc.
BootLoader constants: OS=macosx, ARCH=x86, WS=cocoa, NL=en_US
Framework arguments: -product org.eclipse.platform.ide
Command-line arguments: -product org.eclipse.platform.ide -data /Users/moljac/Documents/workspace/../runtime-EclipseApplication -dev file:/Users/moljac/Documents/workspace/.metadata/.plugins/org.eclipse.pde.core/Eclipse Application/dev.properties -os macosx -ws cocoa -arch x86 -consoleLog

!ENTRY org.eclipse.core.resources 2 10035 2012-07-20 10:05:45.718
!MESSAGE The workspace exited with unsaved changes in the previous session; refreshing workspace to recover changes.
No binding table for org.eclipse.ui.contexts.dialog

!ENTRY org.eclipse.core.net 1 0 2012-07-20 10:05:51.180
!MESSAGE System property http.nonProxyHosts has been set to local|.local|169.254/16|.169.254/16 by an external source. This value will be overwritten using the values from the preferences
Jul 20, 2012 10:07:13 AM sharpen.xobotos.XobotLogger setLogFile
INFO: Added logfile /Users/moljac/Documents/workspace/XobotOS/android/logfile.txt
Jul 20, 2012 10:07:16 AM sharpen.core.Sharpen Log
INFO: Starting build
Jul 20, 2012 10:07:18 AM sharpen.core.Sharpen Log
INFO: Converting 2812 files (must parse 2812).
Jul 20, 2012 10:07:18 AM sharpen.core.Sharpen Log
INFO: Parsing 2812 compilation units.
Exception in thread "[Timer] - Main Queue Handler" java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOfRange(Arrays.java:3209)
at java.lang.String.(String.java:215)
at java.lang.StringBuffer.toString(StringBuffer.java:585)
at org.eclipse.equinox.internal.util.impl.tpt.threadpool.ThreadPoolFactoryImpl.execute0(ThreadPoolFactoryImpl.java:94)
at org.eclipse.equinox.internal.util.impl.tpt.timer.TimerImpl.run(TimerImpl.java:110)
at java.lang.Thread.run(Thread.java:680)
java.lang.OutOfMemoryError: Java heap space
at java.lang.AbstractStringBuilder.(AbstractStringBuilder.java:45)
at java.lang.StringBuffer.(StringBuffer.java:91)
at org.eclipse.osgi.util.NLS.internalBind(NLS.java:168)
at org.eclipse.osgi.util.NLS.bind(NLS.java:91)
at org.eclipse.core.internal.jobs.Worker.handleException(Worker.java:43)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:64)
Jul 20, 2012 10:09:40 AM sharpen.core.Sharpen Log
SEVERE: Conversion finished successfully at Fri Jul 20 10:09:38 CEST 2012 (145 seconds).
Jul 20, 2012 10:10:46 AM sharpen.xobotos.XobotLogger setLogFile
INFO: Added logfile /Users/moljac/Documents/workspace/XobotOS/android/logfile.txt
Jul 20, 2012 10:10:49 AM sharpen.core.Sharpen Log
INFO: Starting build
Jul 20, 2012 10:10:52 AM sharpen.core.Sharpen Log
INFO: Converting 2812 files (must parse 2812).
Jul 20, 2012 10:10:52 AM sharpen.core.Sharpen Log
INFO: Parsing 2812 compilation units.
Jul 20, 2012 10:13:09 AM sharpen.core.Sharpen Log
SEVERE: Conversion finished successfully at Fri Jul 20 10:13:07 CEST 2012 (141 seconds).

!ENTRY org.eclipse.core.jobs 4 2 2012-07-20 10:50:28.248
!MESSAGE An internal error occurred during: "Building Workspace".
!STACK 0
java.lang.OutOfMemoryError: Java heap space

!ENTRY org.eclipse.core.jobs 4 2 2012-07-20 10:50:28.250
!MESSAGE An internal error occurred during: "Build Project".
!STACK 0
java.lang.OutOfMemoryError: Java heap space
at org.eclipse.jdt.core.dom.ASTConverter.convertType(ASTConverter.java:3123)
at org.eclipse.jdt.core.dom.ASTConverter.convert(ASTConverter.java:785)
at org.eclipse.jdt.core.dom.ASTConverter.convert(ASTConverter.java:454)
at org.eclipse.jdt.core.dom.ASTConverter.buildBodyDeclarations(ASTConverter.java:183)
at org.eclipse.jdt.core.dom.ASTConverter.convert(ASTConverter.java:2656)
at org.eclipse.jdt.core.dom.ASTConverter.convert(ASTConverter.java:1219)
at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:885)
at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve(CompilationUnitResolver.java:581)
at org.eclipse.jdt.core.dom.ASTParser.createASTs(ASTParser.java:894)
at sharpen.xobotos.XobotBuilder.stage1_parse(XobotBuilder.java:377)
at sharpen.xobotos.XobotBuilder.run(XobotBuilder.java:147)
at sharpen.xobotos.XobotBuilder.run(XobotBuilder.java:232)
at sharpen.xobotos.builder.SharpenBuilder.build(SharpenBuilder.java:156)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
at org.eclipse.core.internal.resources.Workspace.buildInternal(Workspace.java:513)
at org.eclipse.core.internal.resources.Workspace.build(Workspace.java:432)
at org.eclipse.ui.actions.BuildAction$1.runInWorkspace(BuildAction.java:305)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Sharpen Documentation Update?

Hi Xamarin Crew,
You mentioned in the initial post that you were planning to add some documentation so people could take advantage of the improved Sharpen bits. Any news if this is still forthcoming? We'd love to use Sharpen to move and maybe maintain some .net ports of some of the popular open source semantic libraries. Any help with Sharpen would be great.

Thanks,
Dave Gerding

Any plans to update?

Are there any plans to update this project? Or is it dead?

Working build environment in a VM?

You guys spent a lot of time porting Android to C#, but it's hard to appreciate your work if the build process is so convoluted. I think if you distributed a working build all setup in a VM, then a lot more people would get involved in this project. It's cool if you don't plan on evolving this project further, but at least give us a jumping off point :)

pls release an iso

Update code

Can you update code for Android 4.2, latest Linux Kernel and Dalvik?
Thanks!

Sharpen Plugin Install not working

After getting the appropriate Eclipse SDK plugins installed so that the repository check out builds, I've pointed my Indigo Eclipse running on Mac to the path down to my sharpen.site directory: /Users//Development/XobotOS/XobotOS/sharpen/sharpen.site. In there is still just the original site.xml file. All I get in the list of software when it's pointed to it is "There are no categorized items." I've tried pointing one level up, at sharpen.feature, and a few other directories and have not been able to get the plugin listed. I have no build errors but do have literally thousands of warnings about "raw types" and the like in my "Problems" tab.

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