Table of Contents

Introducing Libraries

Creating Server Library Programs

Exporting Objects

Freezing the Library

Controlling Server Library Sharing

Initiating Internal Server Library Processes

Using Server Library Objects

Local Objects in Server Libraries

Global Objects in Server Libraries

Exported Data in Server Libraries

Restrictions on OWN Objects in Server Libraries

Restrictions on COBOL74 Libraries

Monitoring Server Library Linkage

Thawing and Resuming Server Libraries

Creating Client Programs

Importing Procedures to Client Programs

Importing Data to Client Programs

Specifying Client Libraries

Linking to Server Libraries

Implicitly Linking to Server Libraries

Explicitly Linking to Server Libraries

Directly Linking to Server Libraries

Matching Client and Server Library Objects

Initiating Server Library Processes

Implicitly Initiating a Server Library

Explicitly Initiating a Server Library

Monitoring Client Process Linkage

Delinking from Server Libraries

Creating Connection Library Programs

Declaring a Connection Library

Establishing Connections

Explicitly Linking Connection Libraries

Implicitly Linking Connection Libraries

Directly Linking Connection Libraries

Controlling Connection Library Sharing

Approving a Connection

Monitoring Connection State

Matching Connection Library Objects

Initiating Connection Libraries

Unreadying a Connection Library

Delinking Connection Libraries

Using PROLOG and EPILOG Procedures

Using Connection Library Objects

Global Objects in Connection Libraries

Connection Objects in Connection Libraries

Local Objects in Connection Libraries

Exported and Imported Data in Connection Libraries

Predeclared Objects: THIS and THISCL

Passing Connections as Parameters

Restrictions on OWN Objects in Connection Libraries

Other Library Linkage Methods

Linking a Client Library to a Connection Library

Linking a Connection Library to a Server Library

Linking to a Connection Library in a Server Library Program

Linking Using PROCESS VIA

Directly Linking Client, Server, and Connection Libraries

Using Library Attributes

APPROVAL

AUTOLINK

CHANGE

CLUSAGE

CONNECTIONS

DELINKEVENT

FUNCTIONNAME

INTERFACENAME

INTNAME

LIBACCESS

LIBERROR

LIBPARAMETER

SINGLE

STATE

TITLE

Methods of Providing Objects

Direct Provision

Indirect Provision

Dynamic Provision

Circular Provision

Understanding Circular Linkage and Circular Provision

Restrictions on Circular Linkage and Circular Provision

Matching the Object Name

Type Matching

Matching Procedure Types

Matching Parameter Types

ALGOL Parameter Types

C Parameter Types

COBOL74 Parameter Types

COBOL85 Parameter Types

FORTRAN77 Parameter Types

NEWP Parameter Types

Pascal Parameter Types

Using the ANYTYPE Parameter

Matching Array Lower Bounds

Matching Parameter-Passing Mode

Matching Data Types

Determining Which Clients Are Linked to a Library

Understanding Library Process Structure

Process Stacks

Using Isolated Procedures in Libraries

Library Task Attributes

Error Handling

Design Strategies for Linking Libraries

Technical Architectures

Client Strategies

Server Strategies

Middleware Strategies

Factors Affecting System Performance

Delinkage Overuse

Hazards of Circular Connections

Security Considerations for Libraries

Privileges of the Importing Process

Support Library Attributes

Nonresumable Libraries

Restricting Access to a Library Code File

Using Linkage Classes

Library Debugging

Server Library Examples

ALGOL Library: OBJECT/FILEMANAGER/LIB

ALGOL Client Program #1

ALGOL Library: OBJECT/SAMPLE/LIBRARY

ALGOL Library: OBJECT/SAMPLE/DYNAMICLIB

ALGOL Client Program #2

ALGOL Circular Client Programs

ALGOL Incorrect Circular Libraries

C Library and ALGOL Client Program

C Client Program Passing Array to ALGOL Library

C Client Program Passing File to ALGOL Library

COBOL74 Library: OBJECT/SAMPLE4

COBOL74 Library: OBJECT/SAMPLE5

COBOL74 Client Program

COBOL85 Libraries and Client Program

FORTRAN77 Library and Client Program

Pascal Library

Connection Library Example