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Oracle Solaris 11.1 Linkers and Libraries Guide     Oracle Solaris 11.1 Information Library
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Part I Using the Link-Editor and Runtime Linker

1.  Introduction to the Oracle Solaris Link Editors

2.  Link-Editor

3.  Runtime Linker

4.  Shared Objects

Part II Quick Reference

5.  Link-Editor Quick Reference

Part III Advanced Topics

6.  Direct Bindings

7.  Building Objects to Optimize System Performance

Analyzing Files With elfdump

Underlying System

Lazy Loading of Dynamic Dependencies

Position-Independent Code

-K pic and -K PIC Options

Removing Unused Material

Removing Unused Sections

Removing Unused Files

Removing Unused Dependencies

Maximizing Shareability

Move Read-Only Data to Text

Collapse Multiply-Defined Data

Use Automatic Variables

Allocate Buffers Dynamically

Minimizing Paging Activity


Symbol Lookup

When Relocations are Performed

Combined Relocation Sections

Copy Relocations

Using the -B symbolic Option

Profiling Shared Objects

8.  Mapfiles

9.  Interfaces and Versioning

10.  Establishing Dependencies with Dynamic String Tokens

11.  Extensibility Mechanisms

Part IV ELF Application Binary Interface

12.  Object File Format

13.  Program Loading and Dynamic Linking

14.  Thread-Local Storage

Part V Appendices

A.  Linker and Libraries Updates and New Features

B.  System V Release 4 (Version 1) Mapfiles


Chapter 7

Building Objects to Optimize System Performance

Dynamic executables and shared objects require runtime processing to establish the processes these objects contribute to. Multiple instances of a process can be active at any one time, and shared objects can be used by different processes at the same time. The construction of a dynamic object affects the runtime initialization and potential sharing of the object between processes, and overall system performance.

The following sections investigate the runtime initialization and processing of dynamic objects, examining factors that affect their runtime performance such as text size and purity, and relocation overhead.