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)

Discovering memory structure

Unix-like operating systems provide a set of tools for inspecting the memory segments of a process. You learn in this section that some of these segments reside within the executable object file, and other segments are created dynamically at runtime, when the process is spawned.

As you should already know from the two previous chapters, an executable object file and a process are not the same thing, therefore it is expected to have different tools for inspecting each of them.

From the previous chapters, we know that an executable object file contains the machine instructions, and it is produced by the compiler. But a process is a running program spawned by executing an executable object file, consuming a region of the main memory, and the CPU is constantly fetching and executing its instructions.

A process is a living entity that is being executed inside the operating system while the executable object file is just a file containing a premade...