Book Image

Delphi High Performance

By : Primož Gabrijelčič
Book Image

Delphi High Performance

By: Primož Gabrijelčič

Overview of this book

Delphi is a cross-platform Integrated Development Environment (IDE) that supports rapid application development for Microsoft Windows, Apple Mac OS X, Google Android, iOS, and now Linux with RAD Studio 10.2. This book will be your guide to build efficient high performance applications with Delphi. The book begins by explaining how to find performance bottlenecks and apply the correct algorithm to fix them. It will teach you how to improve your algorithms before taking you through parallel programming. You’ll then explore various tools to build highly concurrent applications. After that, you’ll delve into improving the performance of your code and master cross-platform RTL improvements. Finally, we’ll go through memory management with Delphi and you’ll see how to leverage several external libraries to write better performing programs. By the end of the book, you’ll have the knowledge to create high performance applications with Delphi.
Table of Contents (16 chapters)
Title Page
Copyright and Credits
Packt Upsell

Chapter 1. About Performance

"My program is not fast enough. Users are saying that it is not performing well. What can I do?"

These are the words I hear a lot when consulting on different programming projects. Sometimes the answer is simple, sometimes hard, but almost always the critical part of the answer lies in the question. More specifically, in one word - performing.

What do we mean when we say that a program is performing well? Actually, nobody cares. What we have to know is what users mean when they say that the program is not performing well. And users, you'll probably admit, look at the world in a very different way than we programmers.

Before starting to measure and improve the performance of a program, we have to find out what users really mean by the word performance. Only then can we do something productive about it.

We will cover the following topics in this chapter:

  • What is performance?
  • What do we mean when we say that a program performs well?
  • What can we tell about the code speed by looking at the algorithm?
  • How does the knowledge of compiler internals help us write fast programs?
  • Why is it better to measure than to guess?
  • What tools can we use to find the slow parts of a program?