TweetFollow Us on Twitter

Nov 97 Factory Floor

Volume Number: 13 (1997)
Issue Number: 11
Column Tag: From The Factory Floor

CodeWarrior Rhapsody Update, Part 2 and a Quick Look at WarriorWorld

by Dave Mark, ©1997 by Metrowerks, Inc., all rights reserved.

Last month's Factory Floor column featured the first half of an interview with the CodeWarrior Rhapsody team. This month, we'll finish off this interview, starting with a look at the yellow box debugging plans. We'll also take a quick look at a cool new web site, known as WarriorWorld...

Berardino E. Baratta is Vice President, Research and Development for Metrowerks Corp. With the Metrowerks R&D department quickly approaching 100, he has little time left for doing actual coding but he does still sneak it in (mostly by working on it late at night, or early in the morning, depending on how you look at it). Most recently having done compiler and linker modifications for PalmPilot Release 3. He also tries to spend as much time as possible with his wife and young son.

Since starting at Metrowerks in early 1996, Lawrence You has been helping shape the CodeWarrior debugging architecture for non-Mac OS targets, including Rhapsody. He has been a longtime Macintosh developer, also working for Apple and Taligent.

David Hempling is the CodeWarrior Latitude Techinical Lead at Metrowerks, where he is bringing the Latitude Technology to Rhapsody as well, opening new doors for Metrowerks existing applications. David co-founded Quorum Software Systems in 1989 where Latitude was born and has nurtured this unique porting technology as The Latitude Group's President from 1994 to 1996.

Dave: Will MetroNub exist in the yellow box? What are the yellow box debugging plans?

Lawrence You: From the point of view of the CodeWarrior developer, the debugging environment will be very similar, if not identical, to the environment hosted on other platforms. We will know that we did our job well if today's CodeWarrior user cranks up their copy of MW Debug on Rhapsody and says "hey, this looks exactly the same as what I'm used to." There is a growing emphasis on cross-platform development, making ease-of-use and consistency very important in debugging environments.

But, why stop at developing and debugging on only one platform at a time? A developer's needs are different than the customer. Why should a developer be required to use a different platform and often different development tools for every target they develop for? If they are comfortable using an environment on Rhapsody (or MacOS or WindowsNT) and want to use it to cross develop all their versions in one place, why should they have to learn how to use a new debugger? Consider just the number of Yellow Box implementations alone that a developer will have to use: to start, there will be native Yellow Box in PowerPC, native Yellow Box on Intel, and the Yellow Box API on Mac OS.

Considering all of the possibilities, our main goal is to evolve our existing debugging environment into one that can be used for many targets at the same time. Just as we've recognized that our CodeWarrior IDE needed to have the ability to create multiple "targets" which can be used to create fat or cross-developed applications, we also recognize that we have to provide a solution that will let a CodeWarrior user debug for those different targets.

You can see evidence of this strategy already. Just to give you an idea of the extent we believe in this, our Macintosh and Windows debuggers already support C/C++ on MacOS/68K, MacOS/PowerPC, Windows 95/NT/Intel, Sony PlayStation/MIPS, Motorola PowerPC EABI (embedded)/MPC821 and MPC860, PalmOS/68K, OS9/PowerPC not to mention Java and Pascal on the desktop platforms. So along those lines, the Rhapsody targeted debugger will "just" be another plugin; to the CodeWarrior user, MW Debug will look just about the same.

But, there are differences which we'll be addressing. Objective C is different than C and C++. Object file and symbolic information formats are different. MetroNub, which is just a low-level Macintosh INIT, will be replaced by a server. Multitasking and threading will be more prevelant; multiprocessor hardware will be less forgiving of errors in concurrent programs. These are just a few examples.

The Objective-C runtime will require we change the debugger to allow the user to inspect objects and polymorphic functions. Also, the exception handling mechanism is different from C++ but the user will still have the ability to catch exceptions with the debugger. We should also be able to maintain our feature of being able to debug across virtual machine boundaries, like you see with programs which use mixed 68000, PowerPC or JavaVM code.

The linker will generate Mach-O output for PowerPC and Intel, which is different from PEF and XCOFF files. Source-level debugging information will go into a separate debugging "section" of the file, although we may also give the user an option to split the symbolic info into a separate file, kind of like ".SYM"/".xSYM". We have been using DWARF for our MIPS and PowerPC embedded compilers and debuggers and have found it to be a more neutral and expressive debugging information format, not to mention that it is a standard. So we'll be using that instead of the Apple SYM format. To ensure a high level of interoperability, we're also working with Apple to help ensure that files created and used by gnu tools (gcc and gdb) can be used in a mix-and-match fashion.

MetroNub is fine for MacOS debugging, but since Mach differs so dramatically from MacOS, we're moving towards a debugging client/server architecture that can be used on not just Rhapsody, but also for other future systems. Some notable differences are that there is the notion of a single user using a host on MacOS. The Mach tasking model allows multiple users, and the new server will allow for that. The new debugger server can be used locally and remotely with little difference except for responsiveness, opening up possibilities for WAN-based graphical debugging.

Driver developers should find remote debugging with a microkernel useful. It's not clear to me yet what low-level code you won't be able to debug locally (or in some cases remotely), but it seems likely many drivers that were impossible to debug on a Mac with CodeWarrior should look similar to applications on Mach. At the very least, we'll make a strong effort to not preclude driver debugging.

Like other modern operating systems, Mach will allow multithreaded programs to run truly concurrently on mulitprocessor machines. This opens up some new opportunities and exposes errors. Many developers have seen "Heisenbug" effects (even without MP machines), whereby a debugger becomes intrusive, ever so-slightly, changing the events in a program. This is an effect that, in some cases, is impossible to avoid. Most debuggers on multithreaded systems, including gdb, allow the user to examine threads and set breakpoints, but we'll work hard to make sure the user has the most flexibility to debug concurrent programs on MP hardware.

Dave: How does PowerPlant play in all this?

Berardino Baratta: We have a large investment in PowerPlant and don't plan on throwing this away, but we are not planning on porting PowerPlant to Rhapsody as a native framework. These are many reasons for this but the simplest one is that PowerPlant was designed from the ground up to be a Mac OS framework, and as such would require a complete rewrite in order to be efficient under Rhapsody, meaning that users couldn't take advantage of their investment in PowerPlant without rewriting their code. We feel that if users are going to be rewriting their code, then they should target the Yellow Box API directly and take advantage of that API's object oriented design from the start.

We are still planning on providing our users with a path to Yellow Box through the use of our Latitude porting library. We ourselves are relying on this path in order to port our IDE native to Rhapsody. The combination of Latitude and PowerPlant allows users to maintain their current design and yet bypass both PowerPlant and Latitude in order to directly access the Yellow Box APIs in order to implement native functionality, thereby taking advantage of features that are only present in the Yellow Box.

Dave: What's the timeline for all this?

Berardino Baratta: As I write this, we've just recieved a version of Rhapsody on PowerPC, and don't know yet how stable this version is. That is one of the largest variables in our being able to deliver the above mentioned tools in our CodeWarrior Professional Release 2 delivery which is supposed to ship on October 15th. We have full support from Apple engineers so we feel that if it can be done, we will work together to make sure that it is done.

We are not putting all our eggs into the Rhapsody native basket though, in that we are planning on implementing cross development support from MacOS as a first step in our plan. We don't see any road blocks in that plan, so at the very least users will have access to these cross compilers, linker and debugger in Pro2 and we'll then invite users to participate in our beta testing program in order to access our native toolset. This is only Plan B, as I speak, we're still on track for Plan A.

The Pro 2 release of Rhapsody tools, will be of prerelease quality, but we'll patch them over time, in order to ship final releases of the tools, around the same time that Apple goes final on their first public release of Rhapsody. Very similar to our strategy in 1994, during the transition from 68K to PowerPC architecture for MacOS. During the interim, we plan to allow our users to work native on Rhapsody from Day One of their receipt of the first Developer release of the new Operating System.

Dave: By the time this issue hits the streets, developers will have had a chance to play with both the first developer's release of Rhapsody as well as a new version of Latitude for that release. What kinds of things will people be able to do with this new version of Latitude?

Dave Hempling: Our development of Latitude for Rhapsody has gone extremely well. We prepared for Rhapsody by doing initial development on the OpenStep 4.2 release on Intel while we awaited Apple's PowerPC Rhapsody Developer Release. All of Latitude's File and Resource Manager functionality was made endian neutral at that time so that we could open, read, and write Mac Resource Forks in OpenStep. Once the basic Graphical User Interface components were coded and in place, we were able to begin interpreting WIND, DITL, MENU, CNTL, and other resources and put up dialog boxes.

With working windows in place, we had canvases to accept drawing operations. All of our basic Quickdraw drawing, including Region support and some complex CopyBits operations like hilighting and patterned brush drawing have been mapped to DPS operations. Since color dithering is a feature of DPS, we didn't have to manually do it ourselves -- which was a welcome change from Latitude's X version.

All of these features have made their way smoothly to Apple's PowerPC Rhapsody Developer Release. We're successfully mapping windows, controls, menus, and graphical and textual rendering to Rhapsody's GUI and DPS. Some of the Latitude implementations may not be as efficient as we'd like but I know we'll have these cleaned up once Apple releases the Premiere Rhapsody release slated for January.

Developers experimenting the Latitude now should be able to access their resources, put up their windows and dialogs, and see a majority of their application's features working well. Features developers will see missing are those that hadn't made it into the Apple Rhapsody Developer release such as Blue/Yellow Box file sharing and AppleEvents.

One void I know developers will see now is a means to get Mac files into their Rhapsody environments. Simply ftp-ing won't do since apps depend on the Mac File Manager to report various Finder attributes, like file types and owners, and this information is lost by simple ftp. Latitude's File Manager will report all this info if it is included with the files in one of several popular formats that encode Finder information into the file, including AppleDouble, AppleSingle, EtherShare, K-AShare, and uShare. As it happens, Jeff Matthews' Fetch 3.0.1 can write AppleSingle files. Until Helios brings EtherShare to Rhapsody, as they've promised, Fetch 3.0.1 is the only way I know at this time to safely transfer Mac files directly to Rhapsody so that they are fully understood by apps ported with Latitude.

This birth of Rhapsody is much like other new UNIX operating system releases that I've witnessed over the years. Not so much cutting edge but rather bleeding edge development. While the Apple engineers rework and fine tune their new operating system, developers like us are attempting to bring out the best tools possible under constantly shifting conditions. Latitude has been through this kind of development before when operating systems like IRIX 4.0 and Solaris 1 were in early releases. As the Rhapsody releases become more stable, so will Latitude's support.

Check Out WarriorWorld

If you've spent any amount of time teaching yourself PowerPlant, chances are you've heard of the PowerPlant Dream Team, a group of folks dedicated to learning about PowerPlant and interacting and collaborating with each other online.

The founders of the PowerPlant Dream Team created a non-profit organization called WarriorWorld, the official CodeWarrior users' group. Now, WarriorWorld has a new home on the web at http://www.codewarrior.org/.

WarriorWorld is ramping up now and, by the time you read this, the site should be complete, offering a range of technical info and services. According to the WarriorWorld FAQ, the site will soon offer a series of free courses in Java, C++, and PowerPlant. Each course will organize a corresponding Dream Team to make the learning process more effective.

To me, this site has huge potential. Check it out...

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

Printopia 3.0.4 - Share Mac printers wit...
Run Printopia on your Mac to share its printers to any capable iPhone, iPad, or iPod Touch. Printopia will also add virtual printers, allowing you to save print-outs to your Mac and send to apps.... Read more
Tinderbox 7.3.1 - Store and organize you...
Tinderbox is a personal content management assistant. It stores your notes, ideas, and plans. It can help you organize and understand them. And Tinderbox helps you share ideas through Web journals... Read more
ExpanDrive 6.1.6 - Access cloud storage...
ExpanDrive builds cloud storage in every application, acts just like a USB drive plugged into your Mac. With ExpanDrive, you can securely access any remote file server directly from the Finder or... Read more
VOX 3.0.1 - Music player that supports m...
VOX just sounds better! The beauty is in its simplicity, yet behind the minimal exterior lies a powerful music player with a ton of features and support for all audio formats you should ever need.... Read more
Merlin Project 4.3.3 - $289.00
Merlin Project is the leading professional project management software for OS X. If you plan complex projects on your Mac, you won’t get far with a simple list of tasks. Good planning raises... Read more
Mac DVDRipper Pro 7.1 - Copy, backup, an...
Mac DVDRipper Pro is the DVD backup solution that lets you protect your DVDs from scratches, save your batteries by reading your movies from your hard disk, manage your collection with just a few... Read more
iMazing 2.5.2 - Complete iOS device mana...
iMazing (was DiskAid) is the ultimate iOS device manager with capabilities far beyond what iTunes offers. With iMazing and your iOS device (iPhone, iPad, or iPod), you can: Copy music to and from... Read more
Pinegrow 4 - Mockup and design webpages...
Pinegrow (was Pinegrow Web Designer) is desktop app that lets you mockup and design webpages faster with multi-page editing, CSS and LESS styling, and smart components for Bootstrap, Foundation,... Read more
iExplorer 4.1.11 - View and transfer fil...
iExplorer is an iPhone browser for Mac lets you view the files on your iOS device. By using a drag and drop interface, you can quickly copy files and folders between your Mac and your iPhone or... Read more
Merlin Project 4.3.3 - $289.00
Merlin Project is the leading professional project management software for OS X. If you plan complex projects on your Mac, you won’t get far with a simple list of tasks. Good planning raises... Read more

Latest Forum Discussions

See All

The best mobile games to play while your...
Thanksgiving is a time to reconnect with loved ones, eat lots of food, and all of that jazz, but once the festivities start to wind down, folks tend to head to the couch to watch whatever football is happening for Turkey Day. | Read more »
The best Black Friday deals for Apple ga...
Black Friday is hours away at this point, but many popular retailers are getting a jump on things with plenty of pre-Black Friday sales already available. Many of those early bird sales including some sharp discounts on the latest Apple phones... | Read more »
The Inner World 2 (Games)
The Inner World 2 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: Solve mind-bending puzzles in a world full of mystery and save the family of the flute-noses! Their dynasty has been... | Read more »
warbot.io wants you for the robot wars
Fans of epic gundam-style battles will find a lot to love in warbot.io, the first game for up and coming developer Wondersquad. The game saw a lot of success when it first launched for browsers and Facebook, and now even more people are getting the... | Read more »
Uncover alien mysteries in cross-genre s...
If the Alien franchise taught us anything, it’s that landing on a strange planet at the behest of a faceless corporation is probably asking for trouble. And Eldritch Game’s Deliria doesn’t prove otherwise. In 2107, Dimension LG7 is rich with... | Read more »
The best mobile games to play during dre...
| Read more »
Animal Crossing: Pocket Camp beginner...
Animal Crossing: Pocket Camp, was just announced yesterday, but it's already in soft launch in Australia. No matter where you are in the world, you can still get access to the soft launch on iOS, so we've devised a few beginner tips for folks who... | Read more »
The mobile gamer's guide to Black F...
We're starting to catch wind of some exciting deals in the mobile gaming space for Black Friday. There are big discounts on mobile phones and accessories cropping up already, so you might want to get a move on things ahead of the big day. It's... | Read more »
The best pre-Black Friday deals - Novemb...
Black Friday will soon be upon us, but online retailers are already getting a headstart on the steep discounts. Don't wait until Friday—you'll find some pretty good deals all over the internet without waiting in lines or competing with other... | Read more »
Mighty Battles guide - how to build a so...
Mighty Battles, the latest title from Hothead Games, is set to take the App Store by storm. The game puts a welcome twist on lane battlers, adding FPS elements to spice things up a bit. You'll collect cards to put your own military unit to gether,... | Read more »

Price Scanner via MacPrices.net

Black Friday 2017: Find the best deals and lo...
Scan our exclusive price trackers for the latest Black Friday 2017 sales & deals and the lowest prices available on Apple Macs, iPads, and gear from Apple’s authorized resellers. We update the... Read more
Black Friday: 27″ 3.4GHz iMac for $1599, save...
Amazon has the 27″ 3.4GHz Apple iMac on sale for $1599.99 as part of their Black Friday sale. That’s $200 off MSRP, and shipping is free. Their price is currently the lowest price available for this... Read more
Black Friday: 13″ 2.3GHz/256GB MacBook Pro fo...
Amazon has the 13″ 2.3GHz/256GB Apple MacBook Pro on sale for $1299.99 as part of their Black Friday sale. Shipping is free: – 13-inch 2.3GHz/256GB Space Gray MacBook Pro (MPXT2LL/A): $1299.99 $200... Read more
Black Friday: 15″ 2.9GHz MacBook Pros for $25...
Amazon has lowered prices on Silver and Gray 15″ 2.9GHz MacBook Pros to $2549.99. That’s $250 off MSRP, and shipping is free. Their prices are the lowest available for these models from any reseller... Read more
Lowest Black Friday prices on Apple MacBooks:...
Save $150-$420 on the purchase of a MacBook Pro, MacBook, or MacBook Air this Black Friday and Holiday weekend with Certified Refurbished models at Apple. In many cases, Apple’s refurbished prices... Read more
Black Friday: Apple Watch Series 1 for $70 of...
Macy’s has discounted Series 1 Apple Watches by $70 on their online store as part of their Black Friday sale: – 38mm Series 1 Apple Watch: $179, $70 off – 42mm Series 1 Apple Watch: $209, $70 off... Read more
Apple offers 2016 13-inch MacBook Airs, certi...
Apple has Certified Refurbished 2016 13″ MacBook Airs available starting at $809. An Apple one-year warranty is included with each MacBook, and shipping is free: – 13″ 1.6GHz/8GB/128GB MacBook Air: $... Read more
Black Friday sale: Mac minis for $100 off MSR...
B&H Photo has Mac minis on sale for up to $100 off MSRP as part of their Black Friday sale, each including free shipping plus NY & NJ sales tax only: – 1.4GHz Mac mini: $399 $100 off MSRP – 2... Read more
Use your Apple Education discount to save up...
Purchase a new Mac using Apple’s Education discount, and take up to $300 off MSRP. All teachers, students, and staff of any educational institution with a .edu email address qualify for the discount... Read more
Adorama posts Black Friday deals on Apple Mac...
Adorama has posted Black Friday sale prices on many Macs, with MacBooks and iMacs available for up to $200 off MSRP. Shipping is free, and Adorama charges sales tax in NJ and NY only: MacBook Pros... Read more

Jobs Board

Business Development Manager, *Apple* Pay -...
# Business Development Manager, Apple Pay Job Number: 112919084 Santa Clara Valley, California, United States Posted: 18-Aug-2017 Weekly Hours: 40.00 **Job Summary** Read more
Digital Marketing Media Planner, *Apple* Se...
# Digital Marketing Media Planner, Apple Services Job Number: 113080212 Culver City, California, United States Posted: 03-Oct-2017 Weekly Hours: **Job Summary** Read more
*Apple* Retail - Multiple Positions - Apple,...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Business Development Manager, *Apple* Pay -...
# Business Development Manager, Apple Pay Job Number: 112919084 Santa Clara Valley, California, United States Posted: 18-Aug-2017 Weekly Hours: 40.00 **Job Summary** Read more
*Apple* Solutions Consultant - Apple (United...
# Apple Solutions Consultant Job Number: 56553863 North Wales, Pennsylvania, United States Posted: 17-Jun-2017 Weekly Hours: 40.00 **Job Summary** Are you passionate Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.