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Parallel Programming with OmniThreadLibrary
Parallel Programming with OmniThreadLibrary
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Parallel Programming with OmniThreadLibrary

This book is 100% complete

Completed on 2018-02-28

About the Book

Parallel programming is hard. Your best bet to a stable application is a good multithreading framework and for Delphi that means OmniThreadLibrary (www.omnithreadlibrary.com).

This book - which is, incidentally, written by the very author of the OmniThreadLibrary - walks you through different parts of the library. It gives an overview of low-level multithreading approach (programming with tasks), high-level approach (programming with abstractions) and describes various helper functions and data structures implemented in the library.

The book also walks you through multiple examples which demonstrate different aspects of multithreaded programming - from parallel execution of http requests to creation of database connection pools and multithreaded user interfaces.

A printed version is available on Lulu. If you'd like to buy both electronic and paper edition, buy the printed version first as that will give you a coupon for the e-book.

Table of Contents

  • About me
  • Credits
  • Introduction
    • Formatting conventions
    • Learn more
  • Release notes
  • 1. Introduction to multithreading
    • 1.1 Multithreading as a source of problems
      • 1.1.1 Reading and writing shared data
      • 1.1.2 Modifying shared data
      • 1.1.3 Writes masquerading as reads
  • 2. Introduction to OmniThreadLibrary
    • 2.1 Requirements
    • 2.2 License
    • 2.3 Installation
      • 2.3.1 Installing with GetIt
      • 2.3.2 Installing with Delphinus
      • 2.3.3 Installing design package
    • 2.4 Why use OmniThreadLibrary?
    • 2.5 Tasks vs. threads
    • 2.6 Locking vs. messaging
    • 2.7 Message loop required
      • 2.7.1 OmniThreadLibrary and console
      • 2.7.2 OmniThreadLibrary task started from another task
      • 2.7.3 OmniThreadLibrary task started from a TThread
    • 2.8 TOmniValue
      • 2.8.1 Data access
      • 2.8.2 Type testing
      • 2.8.3 Clearing the content
      • 2.8.4 Operators
      • 2.8.5 Using with generic types
      • 2.8.6 Array access
      • 2.8.7 Handling records
      • 2.8.8 Object ownership
      • 2.8.9 Working with TValue
      • 2.8.10 Low-level methods
    • 2.9 TOmniValueObj
    • 2.10 Fluent interfaces
  • 3. High-level multithreading
    • 3.1 Introduction
      • 3.1.1 A lifecycle of an abstraction
      • 3.1.2 Anonymous methods, procedures, and methods
      • 3.1.3 Pooling
    • 3.2 Blocking collection
      • 3.2.1 IOmniBlockingCollection
      • 3.2.2 Throttling
    • 3.3 Task configuration
    • 3.4 Async
      • 3.4.1 Handling exceptions
    • 3.5 Async/Await
    • 3.6 Future
      • 3.6.1 IOmniFuture<T> interface
      • 3.6.2 Completion detection
      • 3.6.3 Cancellation
      • 3.6.4 Handling exceptions
      • 3.6.5 Examples
    • 3.7 Join
      • 3.7.1 IOmniParallelJoin interface
      • 3.7.2 IOmniJoinState interface
      • 3.7.3 Cancellation
      • 3.7.4 Handling exceptions
    • 3.8 Parallel task
      • 3.8.1 IOmniParallelTask interface
      • 3.8.2 Example
      • 3.8.3 Handling exceptions
      • 3.8.4 Examples
    • 3.9 Background worker
      • 3.9.1 Basics
      • 3.9.2 IOmniBackgroundWorker interface
      • 3.9.3 Task initialization
      • 3.9.4 Work item configuration
      • 3.9.5 Work item interface
      • 3.9.6 Examples
    • 3.10 Pipeline
      • 3.10.1 Background
      • 3.10.2 Basics
      • 3.10.3 IOmniPipeline interface
        • 3.10.3.1 Example
      • 3.10.4 Generators, mutators, and aggregators
      • 3.10.5 Throttling
      • 3.10.6 Parallel stages
      • 3.10.7 Exceptions
      • 3.10.8 Examples
    • 3.11 Parallel for
      • 3.11.1 IOmniParallelSimpleLoop interface
      • 3.11.2 Iterating over an array
      • 3.11.3 Examples
    • 3.12 ForEach
      • 3.12.1 Cooperation
      • 3.12.2 Iterating over …
        • 3.12.2.1 … Number ranges
        • 3.12.2.2 … Enumerable collections
        • 3.12.2.3 … Thread-safe enumerable collections
        • 3.12.2.4 … Blocking collections
        • 3.12.2.5 … Anything
      • 3.12.3 Providing external input
      • 3.12.4 IOmniParallelLoop interface
      • 3.12.5 Preserving output order
      • 3.12.6 Aggregation
      • 3.12.7 Cancellation
      • 3.12.8 Task initialization and finalization
      • 3.12.9 Handling exceptions
      • 3.12.10 Examples
    • 3.13 Fork/Join
      • 3.13.1 IOmniForkJoin interface
      • 3.13.2 IOmniCompute interface
      • 3.13.3 IOmniCompute<T> interface
      • 3.13.4 Exceptions
      • 3.13.5 Examples
    • 3.14 Map
      • 3.14.1 IOmniParallelMapper<T1,T2> interface
    • 3.15 Timed task
      • 3.15.1 IOmniTimedTask interface
  • 4. Low-level multithreading
    • 4.1 Low-level for the impatient
    • 4.2 Four ways to create a task
    • 4.3 IOmniTaskControl and IOmniTask interfaces
    • 4.4 Task controller needs an owner
    • 4.5 Communication subsystem
    • 4.6 Processor groups and NUMA nodes
    • 4.7 Thread pooling
      • 4.7.1 Execution flow
      • 4.7.2 IOmniThreadPool interface
      • 4.7.3 Task exit code
      • 4.7.4 Monitoring thread pool operations
      • 4.7.5 Processor groups and NUMA nodes
    • 4.8 Lock-free collections
      • 4.8.1 Bounded Stack
      • 4.8.2 Bounded queue
      • 4.8.3 Message queue
      • 4.8.4 Dynamic queue
      • 4.8.5 Observing lock-free collections
        • 4.8.5.1 Examples
      • 4.8.6 Benchmarks
    • 4.9 Event monitor
    • 4.10 Simple tasks
      • 4.10.1 Name
      • 4.10.2 UniqueID
      • 4.10.3 Parameters
      • 4.10.4 Termination
      • 4.10.5 ExitCode
      • 4.10.6 Exceptions
      • 4.10.7 Sending messages to a task
      • 4.10.8 Receiving messages from a task
      • 4.10.9 ChainTo
      • 4.10.10 Join / Leave
      • 4.10.11 MonitorWith / RemoveMonitor
      • 4.10.12 Enforced
      • 4.10.13 Unobserved
      • 4.10.14 Cancellation token / CancelWith
      • 4.10.15 Lock / WithLock
      • 4.10.16 WithCounter
      • 4.10.17 SetPriority
      • 4.10.18 SetQueueSize
    • 4.11 TOmniWorker tasks
      • 4.11.1 WaitForInit
      • 4.11.2 Task
      • 4.11.3 Receiving messages
      • 4.11.4 RegisterComm
      • 4.11.5 Invoke
      • 4.11.6 Windows message & APC processing
      • 4.11.7 Timers
      • 4.11.8 TerminateWhen
      • 4.11.9 UserData
    • 4.12 Task groups
    • 4.13 IOmniTask interface
      • 4.13.1 Name and ID
      • 4.13.2 Parameters
      • 4.13.3 Termination
      • 4.13.4 Exit status
      • 4.13.5 Exceptions
      • 4.13.6 Communication
      • 4.13.7 Timers
      • 4.13.8 RegisterWaitObject
      • 4.13.9 CancellationToken
      • 4.13.10 Lock
      • 4.13.11 Counter
      • 4.13.12 Processor groups and NUMA nodes
      • 4.13.13 Internal and obsolete functions
  • 5. Synchronization
    • 5.1 Critical sections
      • 5.1.1 IOmniCriticalSection
      • 5.1.2 TOmniCS
      • 5.1.3 Locked<T>
        • 5.1.3.1 Why not use TMonitor?
    • 5.2 TOmniMREW
    • 5.3 Cancellation token
    • 5.4 Waitable value
    • 5.5 Inverse semaphore
    • 5.6 Initialization
      • 5.6.1 Pessimistic initialization
      • 5.6.2 Optimistic initialization
    • 5.7 TWaitFor
    • 5.8 TOmniLockManager<K>
    • 5.9 TOmniSingleThreadUseChecker
  • 6. Miscellaneous
    • 6.1 TOmniTwoWayChannel
    • 6.2 TOmniValueContainer
    • 6.3 TOmniCounter
    • 6.4 TOmniAlignedInt32 and TOmniAlignedInt64
    • 6.5 TOmniRecordWrapper
    • 6.6 TOmniRecord
    • 6.7 IOmniAutoDestroyObject
    • 6.8 IOmniIntegerSet
    • 6.9 Environment
      • 6.9.1 IOmniAffinity
  • 7. How-to
    • 7.1 Background file scanning
    • 7.2 Web download and database storage
    • 7.3 Parallel for with synchronized output
    • 7.4 Using taskIndex and task initializer in parallel for
    • 7.5 Background worker and list partitioning
    • 7.6 Parallel data production
    • 7.7 Building a connection pool
      • 7.7.1 From theory to practice
      • 7.7.2 Running the demo
    • 7.8 QuickSort and parallel max
      • 7.8.1 QuickSort
      • 7.8.2 Parallel max
    • 7.9 Parallel search in a tree
    • 7.10 Multiple workers with multiple frames
      • 7.10.1 The worker
      • 7.10.2 The frame
      • 7.10.3 The form
    • 7.11 OmniThreadLibrary and databases
      • 7.11.1 Database model
      • 7.11.2 Frame and worker
        • 7.11.2.1 Connecting to the database
        • 7.11.2.2 Retrieving the data
      • 7.11.3 Main program
    • 7.12 OmniThreadLibrary and COM/OLE
    • 7.13 Using message queue with a TThread worker
      • 7.13.1 Sending data from multiple producers to a single worker
        • 7.13.1.1 Initialization and cleanup
        • 7.13.1.2 Sending data to the worker
        • 7.13.1.3 Receiving the data
      • 7.13.2 Sending data from a worker to a form
        • 7.13.2.1 Initialization and cleanup
        • 7.13.2.2 Sending data to the form
        • 7.13.2.3 Receiving the data
  • A. Units
  • B. Demo applications
  • C. Examples
  • D. Hooking into OmniThreadLibrary
    • Exception notifications
    • Thread notifications
    • Pool notifications
  • E. ForEach internals
    • Source provider
    • Data manager
    • Local queue
    • Output ordering
  • F. Hyperlinks
  • Notes

Packages

The Book

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The Book + Webinars

This package contains the book and three hour-long webinars on using high-level multithreading abstractions.

Includes:

  • extras
    High-Level Multithreading with OmniThreadLibrary

    This is a collection of three one-hour webinars on using high-level multithreading abstractions in the OmniThreadLibrary.

  • English

  • PDF

  • EPUB

  • MOBI

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Organisation License (unlimited use)

Unlimited copies for 1) staff members employed by the purchasing organisation, and for educational organisations, 2) for every registered student of the purchasing organisation. Also contains three webinars.

Includes:

  • extras
    High-Level Multithreading with OmniThreadLibrary

    This is a collection of three one-hour webinars on using high-level multithreading abstractions in the OmniThreadLibrary.

  • English

  • PDF

  • EPUB

  • MOBI

  • APP

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About the Author

Primož Gabrijelčič
Primož Gabrijelčič

Primož Gabrijelčič is a long-time Delphi programmer, writer for The Delphi Magazine, Monitor, and Blaise Pascal magazines and frequent contributor to the Delphi-SI community. His Delphi-related ramblings are collected on the The Delphi Geek blog.

In his long career he has produced several open-source projects such as Delphi profiler GpProfile (now maintained by others). His active projects include OmniThreadLibrary, a multithreading library for Delphi and several open-sourced Delphi tools, published in the GpDelphiUnits repository.

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