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

Working with parallel tools

There are multiple ways to implement multithreading in an application, and Chapter 6Working with Parallel Tools, dealt with the most basic of them all—TThread. This class was introduced in Delphi 2 where it simply wrapped the Windows CreateThread API. Later, it was enhanced with additional methods and got support for other operating systems but, in essence, it stayed the same good old, stupid, clumsy TThread, which we all learned to love and hate.

Threads created with TThread can be used in two modes. In one, the code has full control over a TThread object—it can create it, tell it to terminate (but the object must observe that and wilfully terminate), and destroy it. In other modes, the code just creates a thread that does its job, terminates it, and is automatically destroyed. The former is more appropriate for service-like operations. You start a thread that then responds to requests, and performs some operations as a response to those requests. When you don...