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Concurrency with Modern C++

By : Rainer Grimm

Concurrency with Modern C++

By: Rainer Grimm

Overview of this book

C++11 is the first C++ standard that deals with concurrency. The story goes on with C++17 and will continue with C++20/23. Concurrency with Modern C++ is a practical guide that gets you to grips with concurrent programming in Modern C++. Starting with the C++ memory model and using many ready-to-run code examples, the book covers everything you need to improve your C++ multithreading skills. You'll gain insight into different design patterns. You'll also uncover the general consideration you have to keep in mind while designing a concurrent data structure. The final chapter in the book talks extensively about the common pitfalls of concurrent programming and ways to overcome these hurdles. By the end of the book, you'll have the skills to build your own concurrent programs and enhance your knowledge base.

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Reader Testimonials

Introduction

Introduction

Conventions

Source Code

How you should read the book?

Personal Notes

Concurrency with Modern C++

Concurrency with Modern C++

C++11 and C++14: The Foundation

C++17: Parallel Algorithms of the Standard Template Library

The Near Future: C++20

Case Studies

The Future: C++23

Patterns and Best Practices

Challenges

Time Library

CppMem

Glossary

Memory Model

Memory Model

Basics of the Memory Model

The Contract

Atomics

The Class Template std::atomic_ref (C++20)

The Synchronisation and Ordering Constraints

Fences

Multithreading

Multithreading

Threads

Shared Data

Thread-Local Data

Condition Variables

Tasks

Parallel Algorithms of the Standard Template Library

Parallel Algorithms of the Standard Template Library

Execution Policies

Algorithms

The New Algorithms

Performance

The Near Future: C++20

The Near Future: C++20

A Cooperatively Interruptible Joining Thread

Atomic Smart Pointers

Latches and Barriers

Semaphores

Coroutines

Case Studies

Case Studies

Calculating the Sum of a Vector

Thread-Safe Initialisation of a Singleton

Ongoing Optimisation with CppMem

Conclusion

The Future: C++23

The Future: C++23

Executors

Extended Futures

Transactional Memory

Task Blocks

Data-Parallel Vector Library

Patterns and Best Practices

Patterns and Best Practices

History

Invaluable Value

Pattern versus Best Practices

Anti-Pattern

Synchronisation Patterns

Synchronisation Patterns

Dealing with Sharing

Dealing with Mutation

Concurrent Architecture

Concurrent Architecture

Active Object

Monitor Object

Half-Sync/Half-Async

Best Practices

Best Practices

General

Multithreading

Memory Model

Lock-Based Data Structures

Lock-Based Data Structures

General Considerations

Concurrent Stack

Concurrent Queue

Challenges

Challenges

ABA Problem

Blocking Issues

Breaking of Program Invariants

Data Races

Deadlocks

False Sharing

Lifetime Issues of Variables

Moving Threads

Race Conditions

The Time Library

The Time Library

The Interplay of Time Point, Time Duration, and Clock

Time Point

Time Duration

Clocks

Sleep and Wait

CppMem - An Overview

CppMem - An Overview

The simplified Overview

Glossary

Glossary

ACID

CAS

Callable Unit

Complexity

Concurrency

Critical Section

Eager Evaluation

Executor

Function Objects

Lambda Functions

Lazy evaluation

Lock-free

Lost Wakeup

Math Laws

Memory Location

Memory Model

Modification Order

Monad

Non-blocking

Parallelism

Predicate

Pattern

RAII

Release Sequence

Sequential Consistency

Sequence Point

Spurious Wakeup

Thread

Total order

TriviallyCopyable

volatile

wait-free

Index

Index

Condition Variables

Condition variables enable threads to be synchronised via messages. They need the <condition_variable> header. One thread acts as a sender, and the other as a receiver of the message. The receiver waits for the notification from the sender. Typical use cases for condition variables are sender-receiver or producer-consumer workflows.

A condition variable can be the sender but also the receiver of the message.

The methods of the condition variable cv
Method	Description
`cv.notify_one()`	Notifies a waiting thread.
`cv.notify_all()`	Notifies all waiting threads.
`cv.wait(lock, ...)`	Waits for the notification while holding a `std::unique_lock`.
`cv.wait_for(lock, relTime, ...)`	Waits for a time duration for the notification while holding a `std::unique_lock`.
`cv.wait_until(lock, absTime, ...)`	Waits until a time...

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Tech Concepts

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Programming languages

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