Chapter 24 -
This chapter describes how to use MacApp's memory management routines to allocate memory and ensure that critical allocations are successful. It also describes how to use MacApp's failure-handling mechanism in your application.
Working With Memory and Failure HandlingThis chapter includes recipes and sample code that demonstrate how to
For a detailed description of MacApp memory management and failure handling, see Chapter 3, "Core Technologies."
- define segment names for your application (for 68K applications only)
- define a
'res!'resource to specify resident segments (for 68K applications only)- define a
'seg!'resource to specify segment usage (for 68K applications only)- avoid problems with register variables in failure handlers
Chapter Contents
- Memory Overview
- Ensuring That Critical Memory Requests Succeed
- Managing Object Allocation Efficiently
- Allocating Permanent and Temporary Memory
- MacApp's Memory Allocation Routines
- Allocating Permanent Memory
- Allocating Temporary Memory
- Allocating Memory for Objects
- Allocating Memory for Lists
- Allocating Memory for List and Objects
- Allocating Master Pointers for the Application
- 'mem!', '68k!', and 'ppc!' Resources
- Recipes--Memory (68K Only)
- Recipe--Defining Segment Names for Your Application
- Recipe--Defining a 'res!' Resource
- Identify Code That Should Always Be Resident
- Map Related Code to the Same Segment
- Create a 'res!' Resource That Lists Resident Segments
- Recipe--Defining a 'seg!' Resource
- Identify Segments in Memory at Greatest Memory Usage
- Identify MacApp Segments Also in Memory
- Create a 'seg!' Resource That Lists the Segments
- Failure-Handling Overview
- MacApp Error-Checking Routines
- The Failure Routine
- How Error Messages Are Displayed
- Setting the Error Message in a Failure Handler
- Calling the Failure Routine Directly
- Recipes--Failure Handling
- Recipe--Avoiding Register Variables in Failure Handlers