CONTENTS

  Title Page

  Copyright Page

  Preface

  1      Introduction to CHF

  1.1     What Is CHF?

  1.2     Condition Handling Concepts

  1.3     Overview of CHF Functions

  1.4     CHF Services
    1.4.1      Condition Handling Services
    1.4.2      Messaging Support Services

  2      Condition Handling Services

  ChfEstablish

  ChfMatchCondition

  ChfRevert

  ChfSigToRet

  ChfUnwind

  3      Messaging Support Services

  ChfFao ChfFaoL

  ChfGetMsg

  ChfPutMsg

  Glossary
    call stack . . . unwind

  FIGURES

  1-1        Sample Stack Scan for Condition Handlers

  1-2        CHF Condition Value Format

  3-1        Message Vector:  First Longword

  3-2        Message Descriptor

  TABLES

  1-1        CHF Condition Handling Services

  1-2        Signal Argument Vector Fields

  1-3        Mechanism Argument Vector Fields

  1-4        Messaging Support Services

  1-5        CHF Severity Codes

  2-1        Headings in the Routine Template

  2-2        CHF Condition Handling Services Routines

  3-1        Headings in the Routine Template

  3-2        CHF Messaging Support Services Routines