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

Getting started with the parallel world

I mentioned multithreaded programming a lot in the previous chapter, so it is not hard to guess where that path is taking me next. Multithreaded programming, or multithreading, is the art of running multiple parts of your program at the same time.

Multithreading is definitely not my first choice for improving existing code. It is hard to write multithreaded programs, and very simple to introduce problems that are then hard to find. Multithreaded programs are also very hard to debug.

To understand multithreading we should first know the processes and threads. In general terms, a process equates to a running program. A process encompasses application code, loaded in memory, and all the resources (memory, files, windows, and so on) used by the program.

A thread, on the other hand, represents a state of the program's execution. A thread is nothing more than the current state of the CPU registers, variables local to the thread (threadvar statement introduces...