Chapter 5 Using Subsystem Break

Table of Contents

If your application will be run in session mode, you can include a subsystem break routine that allows a user running the program interactively to interrupt a task being performed by the program. To provide this capability you must include calls to a number of system intrinsics and supply a special subroutine that will run when subsystem break is invoked.

This chapter describes the process of implementing a subsystem break handler in your program. It includes discussions of the following:

Intrinsics required to enable and perform subsystem break processing.
Intrinsics that control how subsystem break processing occurs.
Sample procedures demonstrating the use of these intrinsics.
Additional considerations for allowing subsystem break in a program.

Chapter 5 Using Subsystem Break

Technical documentation

» Table of Contents

» Glossary

» Index