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Re: [xmlvm-users] Emulator and debugging
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From: Damian <dam...@gm...> - 2010-08-17 16:42:12
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That's what I was thinking. It would be awesome to be able to do that. I found a page that may be helpful: http://download-llnw.oracle.com/javase/1.3/docs/guide/jpda/architecture.html It says that sun provides a reference implementation of some parts of debugger/debugee communication. 2010/8/15 Arno Puder <ar...@pu...> > > a little while ago I sent around a proposal over this mailing list for a > proper debugging architecture. It would allow to debug a Java-based > iPhone application from a standard Java debugger (such as Eclipse) and > run the application on Apple's emulator or a real device (see my old > message below). Needless to say that this is a lot of work and at this > point all effort first goes into the new backend before coming back to > debugging support. > > Arno > > --- > > Guys, > > we have been discussing a possible debugging architecture for XMLVM. > There is currently no way to debug a program that was created with XMLVM > in Apple's emulator or on an actual device. It is possible to debug on > the Java side using XMLVM's emulation library for Cocoa Touch. However, > this has two major disadvantages: problems often only materialize when > you deploy your application on the actual device and it also requires us > to keep pace with our own emulation library. We are getting more and > more patches where people create new Java wrappers for Cocoa Touch API, > but don't have the time and resources to provide an implementation for > our Java-based emulation library. This approach does not scale. > > To solve both problems, we consider to focus our resources in a > debugging architecture. Java supports remote debugging: > http://java.sun.com/javase/technologies/core/toolsapis/jpda/index.jsp > > In particular, there is the so-called Java Debug Wire Protocol (JDWP): > http://java.sun.com/j2se/1.5.0/docs/guide/jpda/jdwp-spec.html > > It defines an on-the-wire protocol between debugger and debugee (the > application to be debugged). So, here is the idea we have been toying > with: write a JDWP protocol engine in Java, cross-compile it to > Objective-C, and deploy it (together with the application to be > debugged) on the device. It should then be possible to connect via any > standard Java Debugger to the application running on the device. > > Once we achieve that goal, it would enable us to do source-level > debugging on the actual device and we no longer need to maintain our > Java emulation library (since we would just leverage Apple's own emulator). > > We think that this is the way to go. Leaves us only with *a lot* of very > tricky code. To implement the JDWP is no small feat. Anyone out there > who has some experience with this? I have been poking around to see if > there might already be a Java-based implementation of the JDWP, but I > couldn't find one. Anyone? > > Arno > > --- > > > On 8/14/10 4:52 PM, Damian wrote: > > Isn't any way to debug the java code with the app running in the iphone > > simulator? That was my main question. > > A lot of java and .net projects that cross compile to other languages > > manage to do it somehow, like monotouch or GWT. > > What would be the way to make that possible with xmlvm? > > > > On Sat, Aug 14, 2010 at 9:22 AM, Troy Gaines <tro...@gm... > > <mailto:tro...@gm...>> wrote: > > > > I just use the Apple iPhone simulator once I'm compiling in xCode. > > You should be able to debug from there. > > > > > > On Aug 14, 2010, at 12:51 AM, Damian <dam...@gm... > > <mailto:dam...@gm...>> wrote: > > > >> Well, but there is no way to debug the code while running on apple > >> simulator, right? Am I missing something? > >> thanks! > >> > >> On Sun, Jul 25, 2010 at 7:02 PM, Panayotis Katsaloulis < > >> <mailto:pan...@pa...>pan...@pa... > >> <mailto:pan...@pa...>> wrote: > >> > >> > >> On 24 Ιουλ 2010, at 6:34 π.μ., Damian Troncoso wrote: > >> > >> > Well, I'm finding myself blocked by the emulator > >> capabilities, and I > >> > think that using it maybe is not the best idea. > >> > Is there any way to use apple emulator and be able to debug > >> somehow? > >> > Anyone has taken the approach of not using xmlvm emulator > >> and using > >> > apple's one or a real device? Could I have better luck this > way? > >> > The problem I find with xmlvm emulator is that most of apple > >> libraries > >> > are not implemented, and I think doing so is not practical > >> at all. > >> > Besides that, I don't think it's uncommon to find problems > >> in apple > >> > emulator that wasn't in xmlvm one, because the code is not > >> the same. > >> > So finding a way to debug in the actual device would be > >> absolutely > >> > useful and there would be no need to put so much effort on > xmlvm > >> > emulator and libs. Am I right? > >> > > >> > Any help or idea will be greatly appreciated. > >> > Damian > >> > >> > >> try this command: > >> > >> java -jar xmlvm.jar --out=OUT_DIR --app-name=NAME > >> --skeleton=iphone > >> > >> and of course replace OUT_DIR and NAME with actual parameters. > >> Then open the created project in Netbeans under OS X. > >> Don't forget to change target form Netbeans to Xcode > >> > ------------------------------------------------------------------------------ > >> This SF.net <http://SF.net> email is sponsored by Sprint > >> What will you do first with EVO, the first 4G phone? > >> Visit <http://sprint.com/first>sprint.com/first > >> <http://sprint.com/first> -- > >> <http://p.sf.net/sfu/sprint-com-first> > http://p.sf.net/sfu/sprint-com-first > >> _______________________________________________ > >> xmlvm-users mailing list > >> <mailto:xml...@li...> > xml...@li... > >> <mailto:xml...@li...> > >> <https://lists.sourceforge.net/lists/listinfo/xmlvm-users> > https://lists.sourceforge.net/lists/listinfo/xmlvm-users > >> > >> > >> > ------------------------------------------------------------------------------ > >> This SF.net <http://SF.net> email is sponsored by > >> > >> Make an app they can't live without > >> Enter the BlackBerry Developer Challenge > >> http://p.sf.net/sfu/RIM-dev2dev > >> _______________________________________________ > >> xmlvm-users mailing list > >> xml...@li... > >> <mailto:xml...@li...> > >> https://lists.sourceforge.net/lists/listinfo/xmlvm-users > > > > > > > > > > > ------------------------------------------------------------------------------ > > This SF.net email is sponsored by > > > > Make an app they can't live without > > Enter the BlackBerry Developer Challenge > > http://p.sf.net/sfu/RIM-dev2dev > > > > > > > > _______________________________________________ > > xmlvm-users mailing list > > xml...@li... > > https://lists.sourceforge.net/lists/listinfo/xmlvm-users > > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by > > Make an app they can't live without > Enter the BlackBerry Developer Challenge > http://p.sf.net/sfu/RIM-dev2dev > _______________________________________________ > xmlvm-users mailing list > xml...@li... > https://lists.sourceforge.net/lists/listinfo/xmlvm-users > |
