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


Whenever you need to access the same data from multiple threads, and at least one thread is modifying the data, you have to synchronize access to the data. As we've just seen, this holds for shared data structures and for simple variables.

Synchronization will make sure that one thread cannot see invalid intermediate states that another thread creates temporarily while updating the shared data. In a way this is similar to database transactions at the read committed level, when other users cannot see changes applied to the database while a transaction is in progress.

The simplest way to synchronize two (or more) threads is to use locking. With locking you can protect a part of the program so that only one thread will be able to access it at any time. If one thread has successfully acquired but not yet released the lock (we also say that the thread now owns the lock), no other threads will be able to acquire that same lock. If any thread tries to acquire a lock, it will be paused...