Book Image

Extreme C

By : Kamran Amini
5 (1)
Book Image

Extreme C

5 (1)
By: Kamran Amini

Overview of this book

There’s a lot more to C than knowing the language syntax. The industry looks for developers with a rigorous, scientific understanding of the principles and practices. Extreme C will teach you to use C’s advanced low-level power to write effective, efficient systems. This intensive, practical guide will help you become an expert C programmer. Building on your existing C knowledge, you will master preprocessor directives, macros, conditional compilation, pointers, and much more. You will gain new insight into algorithm design, functions, and structures. You will discover how C helps you squeeze maximum performance out of critical, resource-constrained applications. C still plays a critical role in 21st-century programming, remaining the core language for precision engineering, aviations, space research, and more. This book shows how C works with Unix, how to implement OO principles in C, and fully covers multi-processing. In Extreme C, Amini encourages you to think, question, apply, and experiment for yourself. The book is essential for anybody who wants to take their C to the next level.
Table of Contents (23 chapters)

Dynamic libraries

Dynamic libraries, or shared libraries, are another way to produce libraries for reuse. As their name implies, unlike the static libraries, dynamic libraries are not part of the final executable itself. Instead, they should be loaded and brought in while loading a process for execution.

Since static libraries are part of the executable, the linker puts everything found in the given relocatable files into the final executable file. In other words, the linker detects the undefined symbols, and required definitions, and tries to find them in the given relocatable object files, then puts them all in the output executable file.

The final product is only produced when every undefined symbol is found. From a unique perspective, we detect all dependencies and resolve them at linking time. Regarding dynamic libraries, it is possible to have undefined symbols that are not resolved at linking time. These symbols are searched for when the executable product is about to...