
Delphi High Performance
Description
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- Identify performance bottlenecks and apply the correct algorithm to increase the performance of applications.
- Delve into parallel programming and memory management to optimize your code
Book DescriptionDelphi 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.What you will learn - Find performance bottlenecks and easily mitigate them
- Discover different approaches to fix algorithms
- Understand parallel programming and work with various tools included with Delphi
- Master the RTL for code optimization
- Explore memory managers and their implementation
- Leverage external libraries to write better performing programs
Who this book is forThis book is for Delphi developers who would like to build high performance applications with Delphi. Prior knowledge of Delphi is assumed.
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Content
- Cover
- Copyright and Credits
- Packt Upsell
- Contributors
- Table of Contents
- Preface
- Chapter 1: About Performance
- What is performance?
- Different types of speed
- Algorithm complexity
- Big O and Delphi data structures
- Data structures in practice
- Mr. Smith's first program
- Looking at code through the Big O eyes
- Don't guess, measure!
- Profiling with TStopwatch
- Profilers
- AsmProfiler
- Sampling Profiler
- AQTime
- Nexus Quality Suite
- Summary
- Chapter 2: Fixing the Algorithm
- Responsive user interfaces
- Updating a progress bar
- Bulk updates
- Virtual display
- Caching
- Dynamic cache
- Speeding up SlowCode
- Summary
- Chapter 3: Fine-Tuning the Code
- Delphi compiler settings
- Code inlining control
- Optimization
- Record field alignment
- Assertions
- Overflow checking
- Range checking
- Extracting common expressions
- The helpful CPU window
- Behind the scenes
- A plethora of types
- Simple types
- Strings
- Arrays
- Records
- Classes
- Interfaces
- Optimizing method calls
- Parameter passing
- Method inlining
- The magic of pointers
- Going the assembler way
- Returning to SlowCode
- Summary
- Chapter 4: Memory Management
- Optimizing strings and array allocations
- Memory management functions
- Dynamic record allocation
- FastMM internals
- Memory allocation in a parallel world
- Replacing the default memory manager
- ScaleMM
- TBBMalloc
- Fine-tuning SlowCode
- Summary
- Chapter 5: Getting Started with the Parallel World
- Processes and threads
- When to parallelize the code?
- Most common problems
- Never access UI from a background thread
- Simultaneous reading and writing
- Sharing a variable
- Synchronization
- Critical sections
- Other locking mechanisms
- A short note on coding style
- Shared data with built-in locking
- Interlocked operations
- Object life cycle
- Communication
- Windows messages
- Synchronize and Queue
- Polling
- Performance
- Third-party libraries
- Summary
- Chapter 6: Working with Parallel Tools
- TThread
- Advanced TThread
- Setting up a communication channel
- Sending messages from a thread
- Implementing a timer
- Summary
- Chapter 7: Exploring Parallel Practices
- Tasks and patterns
- Variable capturing
- Tasks
- Exceptions in tasks
- Parallelizing a loop
- Thread pooling
- Async/Await
- Join
- Join/Await
- Future
- Parallel for
- Pipelines
- Creating the pipeline
- Stages
- Displaying the result and shutting down
- Summary
- Chapter 8: Using External Libraries
- Using object files
- Object file formats
- Object file linking in practice
- Using C++ libraries
- Using a proxy DLL in Delphi
- Summary
- Chapter 9: Best Practices
- About performance
- Fixing the algorithm
- Fine-tuning the code
- Memory management
- Getting started with the parallel world
- Working with parallel tools
- Exploring parallel practices
- Using external libraries
- Final words
- Other Books You May Enjoy
- Index
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