TweetFollow Us on Twitter

May 95 Top 10
Volume Number:11
Issue Number:5
Column Tag:Symantec Top 10

Symantec Top 10

This monthly column, written by Symantec’s Technical Support Engineers, aims to provide you with technical information based on the use of Symantec products.

By Colen Garoutte-Carson, Quality Assurance & Technical Support, Symantec Corp.

Note: Source code files accompanying article are located on MacTech CD-ROM or source code disks.

Q: How do I build a fat application with Symantec C++ v8.0?

A: We’ve touched on this before, and here’s a more detailed look. When an application is launched on a 68K Macintosh, the operating system (OS) loads and executes a 68K ‘CODE’ resource ID 1. When an application is launched on a PowerMac, the OS first looks for a ‘cfrg’ resource describing a PowerPC code fragment stored in the application’s data fork, and if found, prepares and executes the PowerPC code fragment. If the OS is unable to launch the application this way, it tries to loads and execute a 68K ‘CODE’ resource ID 1.

A fat (fat-binary) application has both a PowerPC code fragment and 68K ‘CODE’ resources, and can be launched on either platform.

To create a fat binary app, enable the option to merge an existing 680x0 application into your final application, in the project Options dialog, in the Project Type settings for an application. This copies all resources from the 68K application that do not already exist in your PowerPC application. Most importantly, this copies all 68K ‘CODE’ resources to your PowerPC application.

Resources in your 68K application with the same type and ID as those in your PowerPC application will not be copied.

You can also build a fat application by including a 68K application’s ‘CODE’ resources in a resource (.rsrc) file, and adding that resource file to your PowerPC project.

Q: How do I create an accelerated code resource?

A: Although the linker in Symantec C++ v8.0 does not yet support the creation of code resources, there is a way to create a code resource from a PowerPC application using Symantec Rez. Symantec C++ v8.0 includes a Code Resource project model which does this.

The Code Resource project model consists of two projects. The first, Code Resource.Π, is similar to a Mac Application project, but doesn’t include InitToolbox() (it’s unnecessary in a code resource). It uses the rsrcMPWPPCRuntime.o runtime library instead of PPCRuntime.o, and PPCLink & MakePEF instead of the internal linker.

In PowerMac applications, constructors and destructors for global and static objects are called automatically by __cplusstart(), which the linker assigns as the main entry point to your application (not main()). This routine calls your constructors, initializes your QuickDraw globals, calls your main() function, and then calls your destructors.

In a shared library, constructors for global and static objects are called by __cplusinit, which the linker assigns as an initialization routine. The Code Fragment Manager will automatically call this initialization routine when your shared library is loaded. The __cplusinit() routine will also hook your shared library’s QuickDraw globals into the QuickDraw globals of the calling application. Destructors for global and static objects are called by __cplusterm(), which the linker assigns as a termination routine. The Code Fragment Manager will automatically call this termination routine when your shared library is unloaded.

In code resources, there is no way to automatically call constructors or destructors for global and static objects, or hook QuickDraw globals, and still preserve the arguments passed to main(). Instead, you must call routines to do this for you. In C, you use __rsrcinit() and __rsrcterm(), declared in stdlib.h. In C++, you use __cplusrsrcinit() and __cplusrsrcterm(), declared in new.h. The C++ initialization and termination routines call the C initialization and termination routines. Use only the C++ or C initialization routines. Do not use both. These routines are defined in the rsrcMPWPPCRuntime.o library.

If your code resource is called only once to perform its function, call __rsrcinit() or __cplusrsrcinit() at the start of your program, and __rsrcterm() or __cplusrsrcterm() at the end.

If your code resource is reentrant, call __rsrcinit() or __cplusrsrcinit() only the first time your code resource is called, and __rsrcterm() or __cplusrsrcterm() the last time your code resource is called.

Do not use any QuickDraw globals, or any global or static objects that rely on their constructor, before calling __rsrcinit() or __cplusrsrcinit().

The second project in the Code Resource project model will copy the data fork of the target built by Code Resource.Π into a resource and prepend a routine descriptor to it. Code Resource.Π is included as a sub-project to the second project. Debugging is disabled for the sub-project to ensure that the sub-project’s target is built instead of a temporary instant-run PEF when the parent project is brought up to date.

Code Resource.Π includes two resource (.r) files, _CopyToResource.r and __AppendRoutineDescriptor.r.

_CopyToResource.r reads the data fork of the sub-project’s target and stores it into a temporary resource.

__AppendRoutineDescriptor.r prepends a routine descriptor to the temporary resource and stores it in your final resource. Before you build your code resource, you will need to modify a number of #define’s in this file. The file contains comments that describe the necessary changes.

The Always check file dates option is enabled in the second project to ensure that the resource description files’ dependency on the sub-project’s target is properly tracked.

__AppendRoutineDescriptor.r is dependant on _CopyToResource.r. These files have been named to compile in the right order.

Once the parent project has been brought up to date, your accelerated code resource will be stored in the project’s resource file (<projectname>.rsrc).

Q: How do I create a fat or safe fat code resource?

A: You can build a fat or safe fat code resource in much the same way that you would create an accelerated code resource, discussed above. The Code Resource project model includes support for these fat code resource types, as well as a few others. See the comments within the project model for details.

Q: Why are my structs a different size in my PowerPC project than they are in my 68K project?

A: The MC68000 chip must reference word or long values from even addresses. More recent chips in the 680x0 family do not have this limitation, but perform faster when referencing word or long values from even addresses. The 68040 and PowerPC chips perform even faster with structures aligned on 4-byte boundaries.

If you need to share data structures in memory between 68K and PowerPC code (e.g. when passing data to the Macintosh Toolbox’s pre-existing 68K-based interfaces), or need to read or write data structures from/to disk with both 68K and PowerPC code, you will need to ensure that your alignment settings match in both your 68K and PowerPC projects.

By default, the PowerPC compilers align fields within structs on 4-byte boundaries. By default, the 68K C++ compiler aligns fields within structs on 2-byte boundaries. Think C always aligns fields within structs on 2-byte boundaries.

The PowerPC compiler supports the following #pragma directive to enable 68K (2-byte) structure alignment in a given structure declaration :

#pragma options align=mac68K
/* Your struct declaration */
#pragma options align=reset

Q: My 68K application, created with the Visual Architect in v7.0(.x), works fine. Why does a fat version of the same application not run on a 68K Mac?

A: Because of changes in the TCL, you will need to re-compile the 68K application with the 68K environment and TCL included in version 8, and re-merge it into your fat application.

Q: When I run my program with the debugger, it launches “Power Mac DebugServices”. This program remains running invisibly. How can I quit this application when I am done debugging?

A: You can write an AppleScript that contains the following :

 tell application "Power Mac DebugServices" to quit

Never run this script while debugging. To ensure that DebugServices has quit when no longer needed, name the script ShutDown, and put it in your (Scripts) folder. The script will be run when you quit the Symantec Project Manager.

Q: Can I use Apple’s new Toolbox Assistant with the Symantec Project Manager?

A: Yes. The Symantec Project Manager supports both The THINK Reference and QuickViewer. It is capable of using both simultaneously.

As with the Think Project Manager, the Symantec Project Manager will allow you to reference the Think Reference or QuickViewer directly if an alias to it, named exactly “THINK Reference” or “Primary Doc Server”, is located in your “(Tools)” folder. The Symantec Project Manager considers these names synonymous. The Symantec Project Manager will search a second documentation server if it’s unsuccessful in finding a match in the first. The second documentation server’s alias must also be located in the “(Tools)” folder and must be named “Secondary Doc Server”.

Q: When I convert my Think Project Manager project, the Symantec Project Manager preserves the segmentation in groups. Is there a way around this?

A: Yes, hold down the shift key when opening the Think Project Manager project.

Q: How do I Check In files to my SourceServer database for the first time? And how do I Check Out files from a SourceServer database that I’ve never checked out before?

A: To do these actions, you must send the command to SourceServer manually. The Symantec Project Manager includes a Worksheet window, available under the Windows menu, that you can use to send commands to SourceServer or ToolServer.

Example of a CheckIn command :

CheckIn -new "filename.cp"

Q: Can I use Check In on the Revision menu to check in header files to a SourceServer database?

A: Yes. In the project Options dialog, on the “Extension” settings page, add .h to the list of supported filename extensions, but do not specify a translator. You will be able to add files with names ending in .h to your project, but they will not be compiled. You can then check these files into your SourceServer database by selecting them in the project window, and then selecting Check In from the Revision menu.

 

Community Search:
MacTech Search:

Software Updates via MacUpdate

FoldersSynchronizer 4.2.1 - Synchronize...
FoldersSynchronizer is a popular and useful utility that synchronizes and backs-up files, folders, disks and boot disks. On each session you can apply special options like Timers, Multiple Folders,... Read more
Simon 4.0.2 - Monitor changes and crashe...
Simon monitors websites and alerts you of crashes and changes. Select pages to monitor, choose your alert options, and customize your settings. Simon does the rest. Keep a watchful eye on your... Read more
Cocktail 8.1.2 - General maintenance and...
Cocktail is a general purpose utility for OS X that lets you clean, repair and optimize your Mac. It is a powerful digital toolset that helps hundreds of thousands of Mac users around the world get... Read more
Cyberduck 4.6.4 - FTP and SFTP browser....
Cyberduck is a robust FTP/FTP-TLS/SFTP browser for the Mac whose lack of visual clutter and cleverly intuitive features make it easy to use. Support for external editors and system technologies such... Read more
Herald 5.0.2 - Notification plugin for M...
Note: Versions 2.1.3 (for OS X 10.7), 3.0.6 (for OS X 10.8), and 4.0.8 (for OS X 10.9) are no longer supported by the developer. Herald is a notification plugin for Mail.app, Apple's Mac OS X email... Read more
DEVONthink Pro 2.8.3 - Knowledge base, i...
Save 10% with our exclusive coupon code: MACUPDATE10 DEVONthink Pro is your essential assistant for today's world, where almost everything is digital. From shopping receipts to important research... Read more
Boom 2 1.0.1 - System-wide pro audio app...
Boom 2 is a system-wide volume booster and equalizer app that is designed especially for OS X 10.10 Yosemite. It comes with a smart interface, self-calibrates itself according to your Mac, offers... Read more
Apple Security Update 2015-001 - For OS...
Apple Security Update 2015-001 is recommended for all users and improves the security of OS X. For detailed information about the security content of this update, please visit: http://support.apple.... Read more
Drive Genius 4.0.1 - Powerful system uti...
Drive Genius 4 gives you faster performance from your Mac while also protecting it. The award-winning and improved DrivePulse feature alerts you to hard drive issues before they become major problems... Read more
Yosemite Cache Cleaner 9.0.3 - 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

Unlock Sunshine Girl in Ironkill with th...
Unlock Sunshine Girl in Ironkill with this special 148Apps code Posted by Rob Rich on January 29th, 2015 [ permalink ] Robo-fighter Ironkill has been out on iOS a | Read more »
Crossroad Zombies Review
Crossroad Zombies Review By Jordan Minor on January 29th, 2015 Our Rating: :: CROSSWALKING DEADiPad Only App - Designed for the iPad Crossroad Zombies is a rough draft of a cool genre mash-up.   | Read more »
Blood Brothers 2 – Tips, Cheats, and Str...
War is hell: Is it the kind of hell you want to check out? Read our Blood Brothers 2 review to find out! Blood Brothers 2, DeNA’s follow-up to the original Blood Brothers, is an intriguing card collecting / role-playing / strategy hybrid. There’s... | Read more »
Blood Brothers 2 Review
Blood Brothers 2 Review By Nadia Oxford on January 29th, 2015 Our Rating: :: AN AGGRAVATING RELATIVEUniversal App - Designed for iPhone and iPad Blood Brothers 2 is built on a simple, solid foundation, but its free-to-play system... | Read more »
I AM BREAD, the Toast of the Town, is Ro...
Have you ever dreamt of being deliciously gluten-y? Do you feel passionate about Rye and Wheat? The guys at Bossa Studios do and that is why they are bringing I AM BREAD to iOS soon. The loafy app will feature all the new content that is being... | Read more »
Fahrenheit: Indigo Prophecy Remastered R...
Fahrenheit: Indigo Prophecy Remastered Review By Jennifer Allen on January 29th, 2015 Our Rating: Universal App - Designed for iPhone and iPad 10 years after its initial release and Fahrenheit: Indigo Prophecy still feels like a... | Read more »
Evolve: Hunters Quest is a Match-3 That...
Evolve: Hunters Quest is a Match-3 That Has You Hunting Up Some Big Game. Posted by Jessica Fisher on January 29th, 2015 [ permalink ] | Read more »
Destructamundo Review
Destructamundo Review By Jordan Minor on January 29th, 2015 Our Rating: :: WRECKING CREWUniversal App - Designed for iPhone and iPad Destructamundo blows up real good.   | Read more »
The Sandbox Gets Exclusive Update, Adds...
The Sandbox Gets Exclusive Update, Adds Invincible Characters Campagin Posted by Tre Lawrence on January 29th, 2015 [ permalink ] | Read more »
Mean Girls: The Game Review
Mean Girls: The Game Review By Jordan Minor on January 29th, 2015 Our Rating: :: FETCHUniversal App - Designed for iPhone and iPad A Mean Girls tower defense game makes way more sense than you’d think.   | Read more »

Price Scanner via MacPrices.net

Back in stock: Refurbished iPod nanos for $99...
The Apple Store has Apple Certified Refurbished 16GB iPod nanos available for $99 including free shipping and Apple’s standard one-year warranty. That’s $50 off the cost of new nanos. Most colors are... Read more
New Good Management Suite Simplifies Enterpri...
Good Technology has announced the availability of the Good Management Suite, a comprehensive cross-platform solution for organizations getting started with mobile business initiatives. Built on the... Read more
15-inch 2.0GHz Retina MacBook Pro (refurbishe...
The Apple Store has Apple Certified Refurbished previous-generation 15″ 2.0GHz Retina MacBook Pros available for $1489 including free shipping plus Apple’s standard one-year warranty. Their price is... Read more
15-inch 2.5GHz Retina MacBook Pro on sale for...
Amazon has the 15″ 2.5GHz Retina MacBook Pro on sale for $2319.99 including free shipping. Their price is $180 off MSRP, and it’s the lowest price available for this model from any reseller. Read more
iPad Turns Five – The ”Book Mystique
Five years ago this week, the late Steve Jobs took the stage at an Apple special press event to unveil the first Apple iPad — a slab-shaped, hand-holdable device that was to shake the personal... Read more
Sale! 15-inch Retina MacBook Pros for up to $...
B&H Photo has the new 2014 15″ Retina MacBook Pros on sale for $150 off MSRP for a limited time. Shipping is free, and B&H charges NY sales tax only: - 15″ 2.2GHz Retina MacBook Pro: $1889.99... Read more
Apple refurbished Mac minis for up to $150 of...
The Apple Store has restocked Apple Certified Refurbished 2014 Mac minis, with models available starting at $419. Apple’s one-year warranty is included with each mini, and shipping is free: - 1.4GHz... Read more
Apple Releases New Tranche Of OS Updates For...
Apple has released incremental bugfix and security updates for its most recent Mac and iOS versions. OS X Yosemite 10.10.2 Update Apple says this update includes the following improvements: Resolves... Read more
Samsung To Be Main Supplier Of A9 Chips For i...
Korea’s Maeil Business Newspaper reports that Samsung has beat out its chipmaking rivals, Taiwan’s Qualcomm and TSMC, as supplier of chipsets for the next generations of both its own Galaxy S6 and... Read more
Save up to $340 on iMacs with Apple Certified...
The Apple Store has Apple Certified Refurbished iMacs available for up to $340 off the cost of new models. Apple’s one-year warranty is standard, and shipping is free. These are the best prices on... Read more

Jobs Board

*Apple* Retail - Multiple Positions(US) - Ap...
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* Systems Engineer - Pre Sales, Educat...
…is responsible for proactively providing technical expertise to drive sales of Apple solutions into assigned accounts. The SE architects, validates, and assists in Read more
*Apple* Solutions Consultant - Retail Sales...
As an ambassador of the Apple brand, the ASC is accountable for driving sales performance by: Connecting with customers. Discovering customers' needs and values. Showing Read more
*Apple* Solutions Consultant - Retail Sales...
As an ambassador of the Apple brand, the ASC is accountable for driving sales performance by: Connecting with customers. Discovering customers' needs and values. Showing Read more
*Apple* Tree Children's Center is hirin...
Apple Tree Learning Center is Hiring Preschool Teachers! Phoenix Childrens Academy is a national leader in the early childhood education industry and we are currently Read more
All contents are Copyright 1984-2011 by Xplain Corporation. All rights reserved. Theme designed by Icreon.