Archive for year: 2022

BehavioralPattern

The Strategy Pattern

November 12, 2022

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The Strategy Pattern is a behavioral design pattern from the book Design Patterns: Elements of Reusable…

patterns

The Facade Pattern

November 7, 2022

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Today, I write about the Facade Pattern. The Facade Pattern is a structural pattern and has one purpose:…

patterns

The Composite Pattern

October 30, 2022

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The Composite Pattern allows you to compose objects into tree structures and treat the individual object…

patterns

The Decorator Pattern

October 23, 2022

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The Decorator Pattern's job is to extend an object with responsibilities dynamically. Let me, in today's…

TemplateMetaprogrammingMarius

And the Five Winners for “Template Metaprogramming with C++” are

October 18, 2022

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Today, I want to present the five winners for coupons for the book "Template Metaprogramming with C++"…

patterns

The Bridge Pattern

October 16, 2022

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The Bridge Pattern is a structural pattern. It decouples the interface from the implementation. In C++,…

patterns

The Adapter Pattern

October 9, 2022

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The idea of the adapter pattern is straightforward: It converts the interface of a class into another…

TemplateMetaprogrammingMarius

Five Coupons for the eBook “Template Metaprogramming with C++”

October 5, 2022

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I'm happy to announce that I have five giveaway eBooks for "Template Metaprogramming with C++" by Marius…

CreationalPatterns

The Singleton: The Alternatives Monostate Pattern and Dependency Injection

October 2, 2022

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So far, I have discussed in my previous posts the Singleton Pattern, and its pros and cons. One question…

front

Concepts and the Finance Industry

September 30, 2022

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The finance industry is a big user of C++. But as everyone knows, C++ programmers take on a substantial…

Latest news

Data-Parallel Types – A First ExampleJune 25, 2025 - 4:01 pm
After providing a theoretical introduction to the new C++ 26 feature in my last article, “Data-Parallel Types (SIMD),” I would like to follow up today with a practical example. The following introductory example is from the experimental implementation of the SIMD library. This functionality has been fully adopted in the C++ 26 draft under the […]
Data-Parallel Types (SIMD)June 16, 2025 - 10:24 am
The data-parallel types (SIMD) library provides data-parallel types and operations on them. Today, I want to take a closer look at this. Before diving into the new library, I would like to take a moment to discuss SIMD. SIMD Vectorization refers to the SIMD (Single Instruction, Multiple Data) extensions of a modern processor’s instruction set. […]
Read-copy-update (RCU)June 2, 2025 - 9:54 am
Read-copy-update is strong in multithreading environments where a data structure is read almost exclusively but rarely written. First of all, what is RCU? The excellent Wikipedia page on Read-copy-update provides a good introduction: In computer science, read-copy-update (RCU) is a synchronization mechanism that avoids the use of lock primitives while multiple threads concurrently read and […]
atomic<shared_ptr<>> by Oliver SchädlichMay 19, 2025 - 9:11 am
This blog article is an experiment. A few days ago, I received the following email (translated from German) from Oliver Schädlich (oliver.schaedlich@gmail.com). If, as I hope, this article sparks a discussion, I will be happy to summarize it in my last article. Please send an email to: Rainer.Grimm@ModernesCpp.de. I just read your latest article on […]
Hazard Pointers in C++26May 5, 2025 - 11:12 am
Hazard pointers provide garbage collection in C++ and solve the ABA problem. First of all. What is a hazard pointer? Proposal P2530R3 gives a nice explanation: A hazard pointer is a single-writer multi-reader pointer that can be owned by at most one thread at any time. Only the owner of the hazard pointer can set […]
A Lock-Free Stack: A Hazard Pointer Implementation Explained IIApril 7, 2025 - 11:11 am
In my last post, I started to explain a hazard pointer implementation: A Lock-Free Stack: A Hazard Pointer Implementation Explained I. Today, I will continue to explain the implementation. The Retire List The retire list has the public member functions isInUse, addNode, and deleteUnusedNodes. Additionally, it has the inner class RetireNode, an atomic member of […]