Retired Document
Important: This sample code may not represent best practices for current development. The project may use deprecated symbols and illustrate technologies and techniques that are no longer recommended.
Optimization.h
/* |
File: Optimization.h |
Description:The Optimization changes to MoreFiles source and header files, along with |
this file and OptimizationEnd.h, let you optimize the code produced |
by MoreFiles in several ways. |
1 -- MoreFiles contains extra code so that many routines can run under |
Mac OS systems back to System 6. If your program requires a specific |
version of Mac OS and your program checks for that version before |
calling MoreFiles routines, then you can remove a lot of compatibility |
code by defining one of the following to 1: |
__MACOSSEVENFIVEONEORLATER // assume Mac OS 7.5.1 or later |
__MACOSSEVENFIVEORLATER // assume Mac OS 7.5 or later |
__MACOSSEVENORLATER // assume Mac OS 7.0 or later |
By default, all compatibility code is ON. |
2 -- You may disable Pascal calling conventions in all MoreFiles routines |
except for system callbacks that require Pascal calling conventions. |
This will make C programs both smaller and faster. |
Just define __WANTPASCALELIMINATION to be 1 to turn this optimization on |
when building MoreFiles for use from C programs (you'll need to keep |
Pascal calling conventions when linking MoreFiles routines with Pascal |
programs). |
3 -- If Metrowerks compiler is used, "#pragma internal on" may help produce |
better code. However, this option can also cause problems if you're |
trying to build MoreFiles as a shared library, so it is by default not used. |
Just define __USEPRAGMAINTERNAL to be 1 to turn this optimization on. |
Author: FO |
Copyright: Copyright: © 1992-1999 by Apple Computer, Inc. |
all rights reserved. |
Disclaimer: You may incorporate this sample code into your applications without |
restriction, though the sample code has been provided "AS IS" and the |
responsibility for its operation is 100% yours. However, what you are |
not permitted to do is to redistribute the source as "DSC Sample Code" |
after having made changes. If you're going to re-distribute the source, |
we require that you make it clear in the source that the code was |
descended from Apple Sample Code, but that you've made changes. |
Change History (most recent first): |
6/25/99 Updated for Metrowerks Codewarror Pro 2.1(KG) |
*/ |
#ifndef __MACOSSEVENFIVEONEORLATER |
#define __MACOSSEVENFIVEONEORLATER 0 |
#endif |
#ifndef __MACOSSEVENFIVEORLATER |
#define __MACOSSEVENFIVEORLATER __MACOSSEVENFIVEONEORLATER |
#endif |
#ifndef __MACOSSEVENORLATER |
#if GENERATINGCFM |
#define __MACOSSEVENORLATER 1 |
#else |
#define __MACOSSEVENORLATER __MACOSSEVENFIVEORLATER |
#endif |
#endif |
#ifndef __WANTPASCALELIMINATION |
#define __WANTPASCALELIMINATION 0 |
#endif |
#if __WANTPASCALELIMINATION |
#define pascal |
#endif |
#ifndef __USEPRAGMAINTERNAL |
#define __USEPRAGMAINTERNAL 0 |
#endif |
#if __USEPRAGMAINTERNAL |
#if defined(__MWERKS__) |
#pragma internal on |
#endif |
#endif |
Copyright © 2003 Apple Computer, Inc. All Rights Reserved. Terms of Use | Privacy Policy | Updated: 2003-03-13