Chapter 7 - Process Management
This chapter describes how you can use Open Transport functions to handle system tasks and deferred tasks in existing System 7 code. You cannot call most Open Transport functions at interrupt time, so you need to ensure that your code makes such calls during system or deferred task time.This chapter describes
To use this chapter, you need to be familiar with System 7 system tasks, deferred tasks, and interrupts in general. For information about system tasks, read the information about the
- checking whether you can make a synchronous call
- handling system and deferred tasks
- calling permitted Open Transport functions at interrupt time
- idling or delaying processing on your computer
SystemTaskfunction in the chapter "Event Manager" in Inside Macintosh: Macintosh Toolbox Essentials, and for information about interrupts and deferred tasks, read the chapters "Introduction to Processes and Tasks" and "Deferred Task Manager" in Inside Macintosh: Processes.This chapter begins with an introduction to Open Transport task processing. Then it discusses System 7 system tasks and deferred tasks in more detail and explains the process callback functions you use to create these tasks. Mac Os 8 task processing will be described in later documentation.
Chapter Contents
- About Task Processing in Open Transport
- Using Process Management Functions
- Using System and Deferred Tasks
- Entering and Leaving Interrupt Processing
- Allocating and Freeing Raw Memory
- Idling or Delaying Your Computer
- Process Management Reference
- Functions
- Checking Synchronous Calls
- Working With System Tasks
- Working With Deferred Tasks
- Entering and Leaving Interrupt Time
- Allocating and Freeing Memory
- Idling and Delaying Processing
- Application-Defined Functions