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

Delphi compiler settings

First things first—before you start meddling with the code, you should check the Delphi compiler settings for your project. In some situations, they can affect the code speed quite a lot.

To check and possibly change compiler settings, open your project, then select Project | Options from the menu or press Ctrl + Shift + F11. Relevant options can be found in the branch Delphi Compiler | Compiling, as shown in the following screenshot here:

Compiler settings that influence program speed

We will look into the following options:

  • Code inlining control
  • Optimization
  • Record field alignment
  • Assertions
  • Overflow checking
  • Range checking

All of these settings can be enabled/disabled for the complete project and they can also be turned on/off in the code by using compiler directives (comments that start with {$).

Code inlining control

We will look into the concept of code inlining later in this chapter, in the section, Optimizing method calls, so this text will serve just as an introduction...