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

Going the assembler way

Sometimes, when you definitely have to squeeze everything from the code, there is only one solution—rewrite it in assembler. My response to any such idea is always the same—don't do it! Rewriting code in an assembler is almost always much more trouble than it is worth.

I do admit that there are legitimate reasons for writing an assembler code. I looked around and quickly found five areas where an assembler is still significantly present. They are: memory managers, graphical code, cryptography routines (encryption, hashing), compression, and interfacing with hardware.

Even in these areas,  situations change quickly. I tested some small assembler routines from the graphical library, GraphicEx, and was quite surprised to find out that they are not significantly faster than equivalent Delphi code.

The biggest gain that you'll get from using an assembler is when you want to process a large buffer of data (such as a bitmap) and then do the same operation on all elements. In...