TweetFollow Us on Twitter

Apr 00 Factory Floor

Volume Number: 16 (2000)
Issue Number: 4
Column Tag: From the Factory Floor

Metrowerks Top Ten

by Richard Atwell

A monthly column of assorted news, interviews, and technical information from Metrowerks

Top Ten

It's been quite a while since we presented a top ten list of support questions so this month we'll do just that. URL addresses to useful resources mentioned in the answers are located at the end of article.

Q) I am having trouble with the CodeWarrior CD installer. It partially completes then stops citing a bad disk error. What can I do?

A) Check for these common disturbances and try running the installer again:

  • the CD is dirty or scratched
  • the correct driver for the CD-ROM drive is missing
  • disruptive third-party extensions are installed such as virus scanning software and/or Norton CrashGuard

Q) Can I use CodeWarrior to port MFC applications to Mac OS?

A) Microsoft's Foundation Classes, or MFC, is a Microsoft Windows specific application framework. CodeWarrior Professional ships with PowerPlant, our world-class application framework for Mac OS. PowerPlant is similar to MFC except there isn't a simple way to port MFC-based code to Mac OS using PowerPlant. This is due to differences between the underlying APIs that both operating systems provide.

Q) The CodeWarrior Release 5.3 Update supports AltiVec but your documentation doesn't have any detailed information on how to program AltiVec. Where can I find such information?

A) Apple's Web site has technical information for developers that describes how to utilize AltiVec instructions to enhance your programs. The CodeWarrior documentation describes the debugging features within the IDE, the compiler support for AltiVec code generation and runtime library support only.

Q) I've written a simple C++ project but somewhere along the way I added some code and now I'm getting compiler errors like this:

Link Error   : Undefined symbol:
?id@?$num_put@DV?$ostreambuf_iterator@DU?$char_traits@D@std@@std@@@std@@2V0locale@2@A
(class std::locale::id std::num_put<char, class std::ostreambuf_iterator<char,
struct std::char_traits<char>>>::id) in hello.cpp

A) The problem is likely caused by having the C/C++ language setting "ARM Conformance" set to on. The MSL C++ library is built with the settings below. If your target differs in setting you may get errors at any stage of development.

	ARM Conformance						off
	Enable C++ Exceptions				on
	Enable bool Support					on
	Enable wchar_t Support				on
	Map newlines to CR					off
	Enums Always Int						off
	Use Unsigned Chars					off

Q) When I try to debug my Java application on Mac OS, I receive the following message:

	"Error setting up JDWP server socket"

A) Ensure your setup is correct:

  • Make sure that you have Apple's MRJ installed on your Mac.
  • Check your CodeWarrior installation and make sure that the RunJava application was installed and is located in the (Helper Apps) folder.
  • Check that you have TCP/IP enabled and set up correctly for your machine.

Starting with CodeWarrior Release 5, the Java debugger requires that you have TCP/IP services installed on your Mac. For information on creating this configuration read the release notes in the following location:

CodeWarrior Pro 5:
		CWPro Release Notes:
		Java Notes:
			IMPORTANT (Mac Java Debug).txt

If you have TCP/IP set up correctly, and you have the CodeWarrior Release 5.3 Update installed, try increasing the timeout value in the global Java Debugging preference panel to 30 or 60 seconds and see if this allows the debugger to launch correctly.

Q) CodeWarrior Release 5 included Apple's Universal Interfaces 3.2. How do I install a newer release like Universal Interfaces 3.3?

A) Starting with CodeWarrior Release 5, the Mac OS Support folder was re-organized in order to simplify the procedure for upgrading essential headers and libraries from Apple. Previous versions required you to hunt down the duplicate files and remove them, but now all you need to do is replace the contents of this folder:

Metrowerks CodeWarrior:MacOS Support:Universal

If you want to leave the 3.2 files in place you can add the new 3.3 files to a (shielded) folder. Then, explicitly add an access path to that folder so projects that require the older files and have an implicit access path to MacOS Support will not accidentally pick up the newer files. You may want to exchange the contents of the shielded folder with the existing Universal folder if you plan to move your projects to the newer headers and libraries.

Q) When my application is halted by the integrated debugger for the very first time, xSYM files for all loaded shared libraries are opened. Since our application has many shared libraries, opening a large number of xSYM files can slow down the debugger startup. How can I stop this from happening?

A) Turn off the "Auto Target Libraries" option in the Global debugger settings. Alternatively, you can turn off the "Auto-target Libraries" option in the debugger target settings of the project that you are debugging.

To debug a specific shared library, simply open the project for it and set a breakpoint. This can also be done by opening the library's xSYM file and setting a breakpoint from there. Doing so will stop the debugger from loading symbolics for all the shared libraries that your application loads when you start debugging.

Q) I can export a project as XML through AppleScript, but how do I create a project from an XML file through AppleScript?

A) The correct statement is:

Make new project document as "HD:Test:Test.mcp" with data "HD:Test:Test.mcp.xml"

There is a paragraph in the release notes that describes the syntax for exporting projects. Currently you must say "make new project document" instead of "make project document" or else this command won't work, even though the AppleScript documentation says that the "new" can optionally follow the "make" command.

Q) How do I setup the Mac-hosted cross-debugger to debug my Win32 apps built with Mac-hosted x86 tools?

A) To use the Mac-hosted x86 cross debugger, you'll need the following:

  • A Mac and a Windows machine networked together using the TCP/IP protocol
  • The CodeWarrior remote debugger nub, MWRemote.exe from the Pro 5 Mac Tools CD
	Metrowerks CodeWarrior:Win32-x86 Support:MWRemote.exe

Setup Procedure:

1) Copy MWRemote.exe to any folder on the Windows machine.

Preferably, you should use an empty folder since the .EXEs or .DLLs you debug will be copied to this location during debugging and may overwrite any existing files with the same names.

2) Enter the Windows machine's TCP/IP address in the x86 Debugger preferences panel within the Mac hosted IDE.

From the Edit menu, select Preferences and then select x86 Debugger panel. Enable remote debugging by checking the Remote Debugging checkbox. Then, edit the Remote IP Address field and enter the remote machine's TCP/IP address. Leave the port number in the second field to the default value of 6969. Close the preferences dialog to save the new settings.

3) Run MWRemote.exe on the Windows host.

Make sure that "TCP/IP" is selected in the Connection combo-box. Note that you can also enter an alternative port number here, otherwise leave it as the default setting of 6969. If you minimize this dialog you'll notice the nub's icon in the Windows task bar, indicating that it's running.

4) Select Debug from the Project menu.

The debugger should launch, automatically copying the target output over to the remote machine. If the application launched, you will stop at the default entry point (i.e., main() or WinMain() for applications, DLLMain() for DLLs).

Notes:

If your application uses DLLs, they must be manually copied to the remote machine. The debugger will not automatically copy DLLs over.

At the present time, it's not possible to debug Win32 DLLs using CodeView for the symbolics format since it's not possible to open the DLLs CodeView file in the Mac-hosted debugger. A workaround is to select the SYM symbolics option through the x86 linker panel for all your targets (any debug libs will also have to be rebuilt using SYM). Then, you can browse the symbolics of any of your DLLs by opening the .iSYM file generated by the linker.

Q) I want to allocate memory for many large objects in my program. To avoid heap fragmentation I have called _prealloc_newpool at the start of the main() function in several projects for many years now. With the CodeWarrior 5.3 Update (with or without patches) the linker complains that it can no longer can find this function and displays the following error:

	Link Error   : undefined 'std::_prealloc_newpool(unsigned long)' (code)

A) Metrowerks was not satisfied with the performance of our previous memory allocators so for CodeWarrior Release 5 we rewrote the malloc/free functions in our MSL C library. This resulted in large performance gains.

For Mac OS targets, operator new has always had several implementation options. In the file New.cp (Mac OS Support:Libraries:Runtime:Common Sources:), these options are implemented as conditionals:

#define NEWMODE_NONE    0		// do not define operator new/delete
#define NEWMODE_SIMPLE  1		// call NewPtr/DisposPtr
#define NEWMODE_MALLOC  2		// use malloc/free
#define NEWMODE_NORMAL  3		// regular new/delete
#define NEWMODE_FAST    4		// regular new/delete fast version

With CodeWarrior Release 4, we shipped with NEWMODE_FAST on by default, which is an allocation algorithm implemented right in New.cp, separate from the malloc/free routines of the MSL C library. This algorithm supported the method mentioned in the linker error along with NEWMODE_NORMAL.

char _prealloc_newpool(size_t size);

With the malloc/free rewrite, we switched the default implementation of new to NEWMODE_MALLOC (which has no corresponding _prealloc_newpool). NEWMODE_FAST is still there but you need to edit New.cp and rebuild your runtime libraries.

The CodeWarrior Release 5 malloc is a sophisticated and robust algorithm in terms of both CPU performance and memory usage. It avoids memory fragmentation two ways:

1. Tiny allocations are lumped together and taken from fixed sized pools. This greatly increases the speed of allocation/deallocation of small blocks and completely eliminates the unused blocks between allocated blocks.

2. Larger allocations come from traditional variably sized pools. As these larger allocations are freed, adjacent free blocks are merged into larger free blocks.

Credits

Thanks to James Lee and everyone in Metrowerks' Tech-Support group who contributed to this article.

We always welcome your feedback on any subject. Contact us through our newsgroup or send us email directly using the addresses below.

Technical Support: cw_support@metrowerks.com
Report Bugs: cw_bug@metrowerks.com
Suggestions: cw_suggestion@metrowerks.com

URLs

AltiVec programming tutorials
http://developer.apple.com/hardware/altivec/index.html

Apple's Universal Interfaces
http://developer.apple.com/sdk/


Richard Alexander David Atwell lives and works in Austin, Texas, where the Metrowerks headquarters are located. Richard attended the University of Victoria, British Columbia, Canada and graduated with a B.Sc. in Computer Science just prior to joining Metrowerks. You can reach him at ratwell@metrowerks.com.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

MarsEdit 3.6.8 - Quick and convenient bl...
MarsEdit is a blog editor for OS X that makes editing your blog like writing email, with spell-checking, drafts, multiple windows, and even AppleScript support. It works with with most blog services... Read more
BBEdit 11.0.3 - Powerful text and HTML e...
BBEdit is the leading professional HTML and text editor for the Mac. Specifically crafted in response to the needs of Web authors and software developers, this award-winning product provides a... Read more
Microsoft Office Preview 15.8 - Popular...
Welcome to the new and modern Microsoft Office for Mac. You will receive regular updates automatically until the official release in the second half of 2015. With the redesigned Ribbon and your... Read more
Yosemite Cache Cleaner 9.0.5 - Clear cac...
Yosemite Cache Cleaner is an award-winning general purpose tool for OS X. YCC makes system maintenance simple with an easy point-and-click interface to many OS X functions. Novice and expert users... Read more
ExpanDrive 4.3.2 - 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
RapidWeaver 6.0.8 - Create template-base...
RapidWeaver is a next-generation Web design application to help you easily create professional-looking Web sites in minutes. No knowledge of complex code is required, RapidWeaver will take care of... Read more
Artlantis Studio 5.1.2.7 - 3D rendering...
Artlantis Studio is a unique and ideal tool for performing very high resolution rendering easily and in real time. The new FastRadiosity engine now lets you compute images in radiosity-even in... Read more
MacUpdate Desktop 6.0.5 - Search and ins...
MacUpdate Desktop 6 brings seamless 1-click installs and version updates to your Mac. With a free MacUpdate account and MacUpdate Desktop 6, Mac users can now install almost any Mac app on macupdate.... Read more
BitTorrent Sync 2.0.82 - Sync files secu...
BitTorrent Sync allows you to sync unlimited files between your own devices, or share a folder with friends and family to automatically sync anything. File transfers are encrypted. Your information... Read more
Google Drive 1.20 - File backup and shar...
Google Drive is a place where you can create, share, collaborate, and keep all of your stuff. Whether you're working with a friend on a joint research project, planning a wedding with your fiancé, or... Read more

Bored? MyLeisure FreeTime Maximizer Will...
Bored? MyLeisure FreeTime Maximizer Will Take Care of That! Posted by Jessica Fisher on March 5th, 2015 [ permalink ] iPhone App - Designed for the iPhone, compatible with the iPad | Read more »
New Publisher Allstar Games Heads West w...
Allstar Games has announced its first mobile title designed for western audiences, Allstar Heroes. The game will be a massive online battle arena (MOBA) that offers dozens of heroes for you to collect and pit against your opponents. As each hero has... | Read more »
RAD Boarding Review
RAD Boarding Review By Jennifer Allen on March 5th, 2015 Our Rating: :: NEARLY RADUniversal App - Designed for iPhone and iPad RAD Boarding isn’t quite one of the greats, but it has potential.   | Read more »
Presenting the International Mobile Gami...
11th Annual International Mobile Gaming Awards ceremony, hosted by actress Allison Haislip, gathered mobile game developers and publishers from around the world. They chose 13 winners out of the 93 nominations. British studio USTWO won the the Grand... | Read more »
AG Drive Review
AG Drive Review By Tre Lawrence on March 5th, 2015 Our Rating: :: FUTURISTIC STREET RACING.Universal App - Designed for iPhone and iPad Futuristic racing… interstellar style.   | Read more »
GDC 2015 – Nightmare Guardians is an Int...
GDC 2015 – Nightmare Guardians is an Interesting Hybrid of MOBA and Lane Defense Posted by Rob Rich on March 5th, 2015 [ permalink ] I have to say that lane defense (i.e. | Read more »
Overkill 3 Review
Overkill 3 Review By Tre Lawrence on March 5th, 2015 Our Rating: :: WHO'S NEXT?Universal App - Designed for iPhone and iPad Cover system gameplay in the third-person.   Developer: Craneballs Price: Free Version Reviewed: 1.1.6... | Read more »
Warner Bros. Interactive Entertainment A...
Warner Bros. has some exciting games coming down the pipe! | Read more »
GDC 2015 – Star Trek Timelines will Prob...
GDC 2015 – Star Trek Timelines will Probably Make Your Inner Trekkie Squeal With Glee Posted by Rob Rich on March 4th, 2015 [ permalink ] Any popular fictional universe has its fair share of fan fiction – where belo | Read more »
Protect Yourself from an Onslaught of Ca...
Surprise Attack Games has announced a Cat-astrophic new physics puzzler called Fort Meow! In the game, a young girl named Nia finds her grandfather’s journal which triggers an all mighty feline attack! Why do the cats want the journal? Who knows,... | Read more »

Price Scanner via MacPrices.net

Apple restocks refurbished 15-inch Retina Mac...
The Apple Store has restocked Apple Certified Refurbished 2014 15″ Retina MacBook Pros, available for up to $400 off the cost of new models. An Apple one-year warranty is included with each model,... Read more
Roundup of MacBook Air sale prices, models up...
B&H Photo has MacBook Airs on sale for up to $100 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 11″ 128GB MacBook Air: $799 100 off MSRP - 11″ 256GB MacBook Air: $999 $100... Read more
New Firstrade Mobile App Enables On-The-Go Tr...
Firstrade Securities Inc. has announced its new mobile app, which gives investors immediate access to the company’s trading platform on all mobile devices. The app was developed in-house and was... Read more
Sonnet Introduces USB 3.0 + eSATA Thunderbolt...
Sonnet has announced the launch of its new USB 3.0 + eSATA Thunderbolt Adapter for easy connectivity to USB 3.0 devices and eSATA storage, and USB 3.0 + Gigabit Ethernet Thunderbolt Adapter for easy... Read more
Apple restocks refurbished 27-inch 5K iMacs f...
The Apple Store has restocked Apple Certified Refurbished 27″ 3.5GHz 5K iMacs for $2119 including free shipping. Their price is $380 off the cost of new models, and it’s the lowest price available... Read more
Free Clean Reader Mobile App Hides Swear Word...
The new Clean Reader app, now available in the Apple App Store and Google Play, delivers the opportunity of reading any book without being exposed to profanity. By selecting how clean they want their... Read more
Kinsa Launches “Groups” App to Monitor Illnes...
Kinsa, makers of the first FDA approved app-enabled smartphone thermometer thst won the 2013 Cleveland Clinic Medical Innovation Grand Prize and recently appeared in Apple’s “Parenthood” TV... Read more
iPad: A More Positive Outlook – The ‘Book Mys...
It’s good to hear someone saying positive things about the iPad. I’ve been trying to bend my mind around how Apple’s tablet could have gone from zero to bestselling personal computing device on the... Read more
Mac Pros on sale for up to $279 off MSRP
Amazon has Mac Pros in stock and on sale for up to $279 off MSRP. Shipping is free: - 4-Core Mac Pro: $2725.87, $273 off MSRP (9%) - 6-Core Mac Pro: $3719.99, $279 off MSRP (7%) Read more
Sale! 13-inch Retina MacBook Pros for up to $...
B&H Photo has 13″ Retina MacBook Pros on sale for up to $205 off MSRP. Shipping is free, and B&H charges NY sales tax only: - 13″ 2.6GHz/128GB Retina MacBook Pro: $1219.99 save $80 - 13″ 2.... Read more

Jobs Board

*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* Solutions Consultant - Retail Sales...
**Job Summary** As an Apple Solutions Consultant (ASC) you are the link between our customers and our products. Your role is to drive the Apple business in a retail Read more
Position Opening at *Apple* - Apple (United...
…Summary** As a Specialist, you help create the energy and excitement around Apple products, providing the right solutions and getting products into customers' hands. You Read more
Position Opening at *Apple* - Apple (United...
**Job Summary** The Apple Store is a retail environment like no other - uniquely focused on delivering amazing customer experiences. As an Expert, you introduce people Read more
*Apple* Solutions Consultant - Retail Sales...
**Job Summary** As an Apple Solutions Consultant (ASC) you are the link between our customers and our products. Your role is to drive the Apple business in a retail Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.