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HP-UX Event ManagerProgrammer's Guide: HP-UX 11i v3Edition 1

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HP Part Number: 5991-6661

Published: February 2007

© Copyright 2007 Hewlett-Packard Development Company, L.P.

Table of Contents

About This Document

Intended Audience
HP-UX Release Name and Release Identifier
Document Organization
Typographic Conventions
Related Documents
HP Encourages Your Comments

1 Introduction

Events and Event Management
How EVM Events are Handled

2 Event Manager Events

EVM Event Content

Standard Data Items
Variable Data Items

Designing a Set of Events

Deciding Which Status Changes are Eventworthy
Writing Event Explanation Text

Designing Event Templates

Deciding What to Put in an Event Template
Matching the Names of Posted Events with Event Template Names
Merging Data Items from Templates and Posted Events
Installing Template Files — Location, Naming, Ownership, and Permission Requirements
Checking Event Template Registration
Establishing Translations for Event Text (I18N)

3 The EVM Programming Interface

EVM Header File
EVM API Library
Building Your Code Using EVM APIs
Return Status Codes
Signal Handling
EVM Multithreaded Programs
Reassigning and Replicating EVM Events
Callback Functions
Choosing a Connection Policy
Handling Disconnections
Missed Events
Using Event Filters

4 Sample EVM Programming Operations

Performing Simple Event Manipulations

Using Variable-Length Argument Lists

Adding and Retrieving Variables

Posting Events

Reading and Writing Events

Subscribing Event Notifications

Handling Multiple I/O Sources

Using Filter Evaluators

Matching Event Names

Dealing with Missed Events

Adding an Event Channel to EVM

The Get Function
The Details Function
The Explain Function
The Monitor Function
The Cleanup Function
Channel Security

List of Figures

1-1 EVM Overview
2-1 Posted Event and Template Merging

List of Tables

1 HP-UX 11i Release
2-1 Standard Data Items
2-2 Reserved Event Names
2-3 Substituting Variables into Event Text
2-4 EVM's Variable Data Types
2-5 Name Matching Examples
2-6 Example Data Item Values for an Internationalized Event
3-1 Entities to be Thread Safe

List of Examples

2-1 Sample Event Explanation Text
2-2 Event Template File
4-1 Performing Simple Event Manipulations
4-2 Using Variable-Length Argument Lists
4-3 Adding and Retrieving Variables
4-4 Posting Events
4-5 Reading and Writing Events
4-6 Subscribing for Event Notification
4-7 Handling Multiple I/O Sources
4-8 Using Filter Evaluators
4-9 Matching Event Names
4-10 Dealing with Missed Events
4-11 Sample Monitor Script

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© 2007 Hewlett-Packard Development Company, L.P.