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

Macs Fan Control 1.3.1.0 - Monitor and c...
Macs Fan Control allows you to monitor and control almost any aspect of your computer's fans, with support for controlling fan speed, temperature sensors pane, menu-bar icon, and autostart with... Read more
NetShade 6.3.1 - Browse privately using...
NetShade is an anonymous proxy and VPN app+service for Mac. Unblock your Internet through NetShade's high-speed proxy and VPN servers spanning seven countries. NetShade masks your IP address as you... Read more
Dragon Dictate 4.0.7 - Premium voice-rec...
With Dragon Dictate speech recognition software, you can use your voice to create and edit text or interact with your favorite Mac applications. Far more than just speech-to-text, Dragon Dictate lets... Read more
Persecond 1.0.2 - Timelapse video made e...
Persecond is the easy, fun way to create a beautiful timelapse video. Import an image sequence from any camera, trim the length of your video, adjust the speed and playback direction, and you’re done... Read more
GIMP 2.8.14p2 - Powerful, free image edi...
GIMP is a multi-platform photo manipulation tool. GIMP is an acronym for GNU Image Manipulation Program. The GIMP is suitable for a variety of image manipulation tasks, including photo retouching,... Read more
Sandvox 2.10.2 - Easily build eye-catchi...
Sandvox is for Mac users who want to create a professional looking website quickly and easily. With Sandvox, you don't need to be a Web genius to build a stylish, feature-rich, standards-compliant... Read more
LibreOffice 5.0.1.2 - Free, open-source...
LibreOffice is an office suite (word processor, spreadsheet, presentations, drawing tool) compatible with other major office suites. The Document Foundation is coordinating development and... Read more
f.lux 36.1 - Adjusts the color of your d...
f.lux makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day. Ever notice how people texting at night have that eerie blue glow? Or wake... Read more
VirtualBox 5.0.2 - x86 virtualization so...
VirtualBox is a family of powerful x86 virtualization products for enterprise as well as home use. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers... Read more
File Juicer 4.43 - Extract images, video...
File Juicer is a drag-and-drop can opener and data archaeologist. Its specialty is to find and extract images, video, audio, or text from files which are hard to open in other ways. In computer... Read more

ReBoard: Revolutionary Keyboard (Utilit...
ReBoard: Revolutionary Keyboard 1.0 Device: iOS Universal Category: Utilities Price: $1.99, Version: 1.0 (iTunes) Description: Do everything within the keyboard without switching apps! If you are in WhatsApp, how do you schedule a... | Read more »
Tiny Empire (Games)
Tiny Empire 1.1.3 Device: iOS Universal Category: Games Price: $2.99, Version: 1.1.3 (iTunes) Description: Launch cannonballs and blow tiny orcs into thousands of pieces in this intuitive fantasy-themed puzzle shooter! Embark on an... | Read more »
Astropad Mini (Productivity)
Astropad Mini 1.0 Device: iOS iPhone Category: Productivity Price: $4.99, Version: 1.0 (iTunes) Description: *** 50% off introductory price! ​*** Get the high-end experience of a Wacom tablet at a fraction of the price with Astropad... | Read more »
Emo Chorus (Music)
Emo Chorus 1.0.0 Device: iOS Universal Category: Music Price: $1.99, Version: 1.0.0 (iTunes) Description: Realistic Choir simulator ranging from simple Chorus emulation to full ensemble Choir with 128 members. ### introductory offer... | Read more »
Forest Spirit (Games)
Forest Spirit 1.0.5 Device: iOS Universal Category: Games Price: $2.99, Version: 1.0.5 (iTunes) Description: | Read more »
Ski Safari 2 (Games)
Ski Safari 2 1.0 Device: iOS Universal Category: Games Price: $1.99, Version: 1.0 (iTunes) Description: The world's most fantastical, fun, family-friendly skiing game is back and better than ever! Play as Sven's sister Evana, share... | Read more »
Lara Croft GO (Games)
Lara Croft GO 1.0.47768 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0.47768 (iTunes) Description: Lara Croft GO is a turn based puzzle-adventure set in a long-forgotten world. Explore the ruins of an ancient... | Read more »
Whispering Willows (Games)
Whispering Willows 1.23 Device: iOS Universal Category: Games Price: $4.99, Version: 1.23 (iTunes) Description: **LAUNCH SALE 50% OFF** - Whispering Willows is on sale for 50% off ($4.99) until September 9th. | Read more »
Calvino Noir (Games)
Calvino Noir 1.1 Device: iOS iPhone Category: Games Price: $3.99, Version: 1.1 (iTunes) Description: The film noir stealth game. Calvino Noir is the exploratory, sneaking adventure through the 1930s European criminal underworld.... | Read more »
Angel Sword (Games)
Angel Sword 1.0 Device: iOS Universal Category: Games Price: $6.99, Version: 1.0 (iTunes) Description: Prepare to adventure in the most epic full scale multiplayer 3D RPG for mobile! Experience amazing detailed graphics in full HD.... | Read more »

Price Scanner via MacPrices.net

Apple offering refurbished 2015 13-inch Retin...
The Apple Store is offering Apple Certified Refurbished 2015 13″ Retina MacBook Pros for up to $270 (15%) off the cost of new models. An Apple one-year warranty is included with each model, and... Read more
Apple refurbished 2015 MacBook Airs available...
The Apple Store has Apple Certified Refurbished 2015 11″ and 13″ MacBook Airs (the latest models), available for up to $180 off the cost of new models. An Apple one-year warranty is included with... Read more
21-inch iMacs on sale for up to $120 off MSRP
B&H Photo has 21″ iMacs on sale for up to $120 off MSRP including free shipping plus NY sales tax only: - 21″ 1.4GHz iMac: $999.99 $100 off - 21″ 2.7GHz iMac: $1199.99 $100 off - 21″ 2.9GHz iMac... Read more
5K iMacs on sale for up to $150 off MSRP, fre...
B&H Photo has the 27″ 3.3GHz 5K iMac on sale for $1899.99 including free shipping plus NY tax only. Their price is $100 off MSRP. They have the 27″ 3.5GHz 5K iMac on sale for $2149.99 $2199.99, $... Read more
1.4GHz Mac mini, refurbished, available for $...
The Apple Store has Apple Certified Refurbished 1.4GHz Mac minis available for $419. Apple’s one-year warranty is included, and shipping is free. Their price is $80 off MSRP, and it’s the lowest... Read more
iPad Air 2 on sale for up to $100 off MSRP
Best Buy has iPad Air 2s on sale for up to $100 off MSRP on their online store for a limited time. Choose free shipping or free local store pickup (if available). Sale prices available for online... Read more
MacBook Airs on sale for $100 off MSRP
Best Buy has MacBook Airs on sale for $100 off MSRP on their online store. Choose free shipping or free local store pickup (if available). Sale prices for online orders only, in-store prices may vary... Read more
Big Grips Lift Handle For iPad Air and iPad A...
KEM Ventures, Inc. which pioneered the extra-large, super-protective iPad case market with the introduction of Big Grips Frame and Stand in 2011, is launching Big Grips Lift featuring a new super-... Read more
Samsung Launches Galaxy Tab S2, Its Most Powe...
Samsung Electronics America, Inc. has announced the U.S. release of the Galaxy Tab S2, its thinnest, lightest, ultra-fast tablet. Blending form and function, elegant design and multitasking power,... Read more
Tablet Screen Sizes Expanding as iPad Pro App...
Larger screen sizes are gaining favor as the tablet transforms into a productivity device, with shipments growing 185 percent year-over-year in 2015. According to a new Strategy Analytics’ Tablet... Read more

Jobs Board

*Apple* Music, Business Operations - Apple (...
**Job Summary** This role in Apple Music and in iTunes is working with…the songs that we all enjoy listening to in Apple Music. Your job will be to work wit Read more
Hardware Systems Integration Engineer - *App...
**Job Summary** We are seeking an enthusiastic electrical engineer for the Apple Watch team. This is a design engineering position that entails working with Read more
Engineering Project Manager - *Apple* TV -...
**Job Summary** The iTunes Apps project management team oversees iTunes, Apple TV, DRM and iOS Applications. We are looking for a project manager to help manage and Read more
*Apple* Retail - Multiple Positions (US) - A...
Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, you're also the Read more
*Apple* Retail Online Store: Customer Insigh...
**Job Summary** Apple Retail (Online Store) is seeking an experienced e-commerce analytics professional to join the Customer Insights Team. The Web e-Commerce Analyst Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.