Chapter 7: Using the Frame Scheduler

This chapter contains details on the operation and use of the Frame Scheduler, under these main headings:

• "Frame Scheduler Concepts" details the operation and methods of the Frame Scheduler.

• "Selecting a Time Base" covers the important choice of which source of interrupts should define a frame interval.

• "Using the Scheduling Disciplines" explains the options for scheduling activities of different kinds.

• "Preparing the System" reviews the system administration steps needed to prepare the CPUs that the Frame Scheduler will use.

• "Implementing a Single Frame Scheduler" outlines the structure of an application that uses one CPU.

• "Implementing Synchronized Schedulers" outlines the structure of an application that needs the power of multiple CPUs.

• "Handling Frame Scheduler Exceptions" describes how overrun and underrun exceptions are dealt with.

• "Using Signals Under the Frame Scheduler" discusses the issue of signal latency and the signals the Frame Scheduler generates.

• "Using Timers with the Frame Scheduler" covers the use of itimers with the Frame Scheduler.

• "The Frame Scheduler Device Driver Interface" documents the way that a kernel-level device driver can generate time-base interrupts for a Frame Scheduler.

Frame Scheduler Concepts

Selecting a Time Base

Using the Scheduling Disciplines

Preparing the System

Implementing a Single Frame Scheduler

Implementing Synchronized Schedulers

Handling Frame Scheduler Exceptions

Using Signals Under the Frame Scheduler

Using Timers with the Frame Scheduler

The Frame Scheduler Device Driver Interface