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1 line
3.5 KiB
C
Executable File
1 line
3.5 KiB
C
Executable File
/*
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File: Optimization.h
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Contains: Defines that let you make MoreFiles code more efficient.
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Version: MoreFiles
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Copyright: © 1992-2001 by Apple Computer, Inc., all rights reserved.
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You may incorporate this sample code into your applications without
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restriction, though the sample code has been provided "AS IS" and the
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responsibility for its operation is 100% yours. However, what you are
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not permitted to do is to redistribute the source as "DSC Sample Code"
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after having made changes. If you're going to re-distribute the source,
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we require that you make it clear in the source that the code was
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descended from Apple Sample Code, but that you've made changes.
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File Ownership:
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DRI: Apple Macintosh Developer Technical Support
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Other Contact: Apple Macintosh Developer Technical Support
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<http://developer.apple.com/bugreporter/>
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Technology: DTS Sample Code
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Writers:
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(JL) Jim Luther
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Change History (most recent first):
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<1> 2/7/01 JL first checked in
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*/
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/*
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The Optimization changes to MoreFiles source and header files, along with
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this file and OptimizationEnd.h, let you optimize the code produced
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by MoreFiles in several ways.
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1 -- MoreFiles contains extra code so that many routines can run under
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Mac OS systems back to System 6. If your program requires a specific
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version of Mac OS and your program checks for that version before
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calling MoreFiles routines, then you can remove a lot of compatibility
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code by defining one of the following to 1:
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__MACOSSEVENFIVEONEORLATER // assume Mac OS 7.5.1 or later
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__MACOSSEVENFIVEORLATER // assume Mac OS 7.5 or later
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__MACOSSEVENORLATER // assume Mac OS 7.0 or later
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If you're compiling 68K code, the default is to include all compatibility code.
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If you're compiling PowerPC code (TARGET_RT_MAC_CFM), the default is __MACOSSEVENORLATER
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If you're compiling for Carbon code (TARGET_API_MAC_CARBON), the default is __MACOSSEVENFIVEONEORLATER
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2 -- You may disable Pascal calling conventions in all MoreFiles routines
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except for system callbacks that require Pascal calling conventions.
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This will make 68K C programs both smaller and faster.
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(PowerPC compilers ignore pascal calling conventions.)
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Just define __WANTPASCALELIMINATION to be 1 to turn this optimization on
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when building MoreFiles for use from C programs (you'll need to keep
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Pascal calling conventions when linking MoreFiles routines with Pascal
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programs).
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3 -- If Metrowerks compiler is used, "#pragma internal on" may help produce
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better code. However, this option can also cause problems if you're
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trying to build MoreFiles as a shared library, so it is by default not used.
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Just define __USEPRAGMAINTERNAL to be 1 to turn this optimization on.
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Original changes supplied by Fabrizio Oddone
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*/
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#include <ConditionalMacros.h>
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// if we're compiling for Carbon, then we're running on Mac OS 8.1 or later
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#ifndef __MACOSSEVENFIVEONEORLATER
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#define __MACOSSEVENFIVEONEORLATER TARGET_API_MAC_CARBON
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#endif
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#ifndef __MACOSSEVENFIVEORLATER
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#define __MACOSSEVENFIVEORLATER __MACOSSEVENFIVEONEORLATER
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#endif
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#ifndef __MACOSSEVENORLATER
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#if TARGET_RT_MAC_CFM
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#define __MACOSSEVENORLATER 1
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#else
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#define __MACOSSEVENORLATER __MACOSSEVENFIVEORLATER
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#endif
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#endif
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#ifndef __WANTPASCALELIMINATION
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#define __WANTPASCALELIMINATION 0
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#endif
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#if __WANTPASCALELIMINATION
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#define pascal
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#endif
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#ifndef __USEPRAGMAINTERNAL
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#define __USEPRAGMAINTERNAL 0
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#endif
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#if __USEPRAGMAINTERNAL
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#if defined(__MWERKS__)
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#pragma internal on
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#endif
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#endif
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