Inside Macintosh: Mac OS Runtime Architectures /

Chapter 3 - Programming for the CFM-Based Runtime Architecture

This chapter contains practical information about programming for the CFM-based runtime architecture, including guidelines for building shared libraries. Note that the topics in this chapter are independent of one another and do not need to be read in any particular order.

This chapter assumes familarity with the terms and concepts presented in Chapter 1, "CFM-Based Runtime Architecture," and Chapter 2, "Indirect Addressing in the CFM-Based Architecture."

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Chapter Contents

Calling the Code Fragment Manager

Preparing Code Fragments

Releasing Fragments

Getting Information About Exported Symbols

Using Shadow Libraries

Requirements for Executing CFM-68K Runtime Programs

Using Stub Libraries at Build Time

Weak Libraries and Symbols

Multiple Names for the Same Fragment

Import Library Techniques

Use No Version Numbers and No Weak Symbols

Declare Weak Symbols in Client

Use PEF Version Numbering

Change Names for Newer Import Libraries

Create an Alias Library Name Using Multiple 'cfrg' 0 Entries

Put New Symbols in New Logical Libraries

Use Reexport Libraries

Using the Main Symbol as a Data Structure

Systemwide Sharing and Data-Only Fragments

Multiple Fragments With the Same Name