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

Tunnelblick 3.6.8beta10 - GUI for OpenVP...
Tunnelblick is a free, open source graphic user interface for OpenVPN on OS X. It provides easy control of OpenVPN client and/or server connections. It comes as a ready-to-use application with all... Read more
FileZilla 3.22.0 - Fast and reliable FTP...
FileZilla (ported from Windows) is a fast and reliable FTP client and server with lots of useful features and an intuitive interface. Version 3.22.0: New Directory listing filters can now be... Read more
Postbox 5.0.3 - Powerful and flexible em...
Postbox is a new email application that helps you organize your work life and get stuff done. It has all the elegance and simplicity of Apple Mail, but with more power and flexibility to manage even... Read more
OnyX 3.2.0 - Maintenance and optimizatio...
OnyX is a multifunction utility that you can use to verify the startup disk and the structure of its system files, to run miscellaneous maintenance and cleaning tasks, to configure parameters in the... Read more
Macs Fan Control 1.4.4.0 - 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
calibre 2.69.0 - Complete e-book library...
Calibre is a complete e-book library manager. Organize your collection, convert your books to multiple formats, and sync with all of your devices. Let Calibre be your multi-tasking digital librarian... Read more
Evernote 6.9.1 - Create searchable notes...
Evernote allows you to easily capture information in any environment using whatever device or platform you find most convenient, and makes this information accessible and searchable at anytime, from... Read more
jAlbum Pro 13.5 - Organize your digital...
jAlbum Pro has all the features you love in jAlbum, but comes with a commercial license. You can create gorgeous custom photo galleries for the Web without writing a line of code! Beginner-friendly... Read more
jAlbum 13.5 - Create custom photo galler...
With jAlbum, you can create gorgeous custom photo galleries for the Web without writing a line of code! Beginner-friendly, with pro results - Simply drag and drop photos into groups, choose a design... Read more
Google Chrome 53.0.2785.143 - Modern and...
Google Chrome is a Web browser by Google, created to be a modern platform for Web pages and applications. It utilizes very fast loading of Web pages and has a V8 engine, which is a custom built... Read more

3 tips to aid your journey in Banner Sag...
Stoic Games brings us another viking epic in the guise of Banner Saga 2 this week. It’s a sweeping tale, richly animated and draped in melancholy and moments of beauty. The game’s been received as a much improved follow up to the first entry in the... | Read more »
Pumped BMX 3: Beginner tips and tricks
There’s a whole lot more to Pumped BMX 3 than meets the eye. Your goal is to perform a wide array of sweet flips and tricks, but that’s easier said than done. It takes well practiced timing and coordination, and the game doesn’t really explain that... | Read more »
Cybird’s latest release - BFB Champions...
Launched in the UK in early September, BFB Champions’ newest update is loaded with great new features, and looks set to outshine the original version by taking it out of soft launch and giving it a new lease of life. | Read more »
3 apps to boost your focus
As someone who works from home, my workspace is a minefield of distraction. Cats, tasty snacks, the wind blowing past my window, that cleaning that I suddenly can’t put off any longer. If I let distraction takes its course, I find that soon half... | Read more »
Pumped BMX 3 (Games)
Pumped BMX 3 1.0 Device: iOS Universal Category: Games Price: $3.99, Version: 1.0 (iTunes) Description: The final instalment of the smash hit #1 rated BMX game is here! Following on from the insane success of Pumped BMX 2, Pumped 3... | Read more »
4 games like Burly Men at Sea to inspire...
Burly Men at Sea is out today and it looks a treat. It tells the tale of three Scandinavian fishermen who leave the humdrum of their daily lives to go exploring. It’s a beautiful folksy story that unfurls as you interact with the environment... | Read more »
3 reasons you need to play Kingdom: New...
Developed by a tag team of indie developers - Thomas "Noio" van den Berg and Marco "Licorice" Bancale - Kingdom is a vibrant medieval fantasy adventure that casts players as a king or queen who must expand their empire by exploring the vasts lands... | Read more »
JoyCity have launched a brand new King o...
Great news for all of you Game of Dice fans out there - JoyCity have just released a brand new limited edition pack with a really cool twist. The premise of Game of Dice is fairly straightforward, asking you to roll dice to navigate your way around... | Read more »
Burly Men at Sea (Games)
Burly Men at Sea 1.0 Device: iOS Universal Category: Games Price: $4.99, Version: 1.0 (iTunes) Description: Burly Men at Sea is a folktale about a trio of large, bearded fishermen who step away from the ordinary to seek adventure. | Read more »
3 tips for catching the gnarliest waves...
Like a wave breaking on the shore, Tidal Rider swept its way onto the App Store charts this week settling firmly in the top 10. It’s a one-touch high score-chaser in which you pull surfing stunts while dodging seagulls and collecting coins. The... | Read more »

Price Scanner via MacPrices.net

CAZE Annouces New Zero 5 Case for Jet Black i...
Hong Kong basd CAZE has announced Zero 5 case for iPhone 7/ 7 Plus, one of the world’s thinnest clear hard cases, measuring just 0.5 millimeters. CAZE has been producing and improving the Zero 5... Read more
Nest Egg Inventory App for iOS Offers Conven...
Campbell, California based Winprogger LLC has announced the release and immediate availability of Nest Egg – Inventory 4.1.22, an important update to their easy-to-use, yet comprehensive inventory... Read more
Factor4, LLC Launches Apple iOS and Android G...
Factor4, LLC, which offers gift and loyalty services to the SMB marketplace, has released free mobile applications that enable merchants to process via all Apple and Android devices. The Apple and... Read more
15-inch Retina MacBook Pros on sale for $200...
B&H Photo has 15″ Retina Apple MacBook Pros on sale for $200 off MSRP. Shipping is free, and B&H charges NY tax only: - 15″ 2.2GHz Retina MacBook Pro: $1799 $200 off MSRP - 15″ 2.5GHz Retina... Read more
Apple refurbished iMacs available for up to $...
Apple has Certified Refurbished 2015 21″ & 27″ iMacs available for up to $350 off MSRP. Apple’s one-year warranty is standard, and shipping is free. The following models are available: - 21″ 3.... Read more
Check Apple prices on any device with the iTr...
MacPrices is proud to offer readers a free iOS app (iPhones, iPads, & iPod touch) and Android app (Google Play and Amazon App Store) called iTracx, which allows you to glance at today’s lowest... Read more
Apple price trackers, updated continuously
Scan our Apple Price Trackers for the latest information on sales, bundles, and availability on systems from Apple’s authorized internet/catalog resellers. We update the trackers continuously: - 15″... Read more
Apple refurbished 2016 13-inch MacBook Airs a...
Apple has Certified Refurbished 2016 13″ MacBook Airs available starting at $849. An Apple one-year warranty is included with each MacBook, and shipping is free: - 2016 13″ 1.6GHz/8GB/128GB MacBook... Read more
1.4GHz Mac mini on sale for $449, save $50
Adorama has the 1.4GHz Mac mini on sale for $50 off MSRP including free shipping plus NY & NJ sales tax only: - 1.4GHz Mac mini (Apple sku# MGEM2LL/A): $449 $50 off MSRP To purchase a mini at... Read more
Apple refurbished 2015 13-inch MacBook Airs a...
Apple has Certified Refurbished 2015 13″ MacBook Airs available starting at $759. An Apple one-year warranty is included with each MacBook, and shipping is free: - 2015 13″ 1.6GHz/4GB/128GB MacBook... Read more

Jobs Board

Systems Architecture Prototyping - *Apple*...
Changing the world is all in a day's work at Apple . If you love innovation, here's your chance to make a career of it. You'll work hard. But the job comes with more Read more
*Apple* Retail - Multiple Positions- Akron,...
Job Description:SalesSpecialist - Retail Customer Service and SalesTransform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
Hardware Design Validation Engineer - *Apple...
Changing the world is all in a day's work at Apple . If you love innovation, here's your chance to make a career of it. You'll work hard. But the job comes with more Read more
Systems Architecture Prototyping - *Apple*...
Changing the world is all in a day's work at Apple . If you love innovation, here's your chance to make a career of it. You'll work hard. But the job comes with more Read more
*Apple* Retail - Multiple Positions- South B...
Job Description: Sales Specialist - Retail Customer Service and Sales Transform Apple Store visitors into loyal Apple customers. When customers enter the store, Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.