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constexpr

constexpr Functions

January 26, 2022

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Today, I continue my story about programming at compile time. After template metaprogramming, the type-traits…

ConcurrencyCoverFrame

An Update of my Book “Concurrency with Modern C++”

January 20, 2022

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I am happy to announce. I updated my "Concurrency with Modern C++". This update includes a rework…

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The New pdf Bundle is Ready: C++20 Concurreny – The Hidden Pearls

January 12, 2022

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I have prepared the pdf bundle. To get it is quite simple. If you subscribe to the newsletter,…

An illustration of the dining philosophers problem

Dining Philosophers Problem III

January 8, 2022

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This post ends the mini-series about the dining philosophers problem by Andre Adrian. Today, he applies…

An illustration of the dining philosophers problem

Dining Philosophers Problem II

January 8, 2022

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In the last post "Dining Philosophers Problem I", Andre Adrian started his analysis of the classical…

An illustration of the dining philosophers problem

Dining Philosophers Problem I

January 7, 2022

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At Christmas time, I had a few nice discussions with Andre Adrian. He solved the classical dining philosopher's…

mentoring

My Mentoring Program “Fundamentals for C++ Professionals”

December 31, 2021

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I'm happy to provide you with more details about my mentoring program, "Fundamentals for C++ Professionals". My…

RainerGrimmSmall

Which pdf bundle do you want? Make your choice!

December 26, 2021

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Now, it's time to choose the next pdf bundle? Get all the material to your chosen topic. I…

templatesTypeTraits

The Type-Traits Library: Optimization

December 17, 2021

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The type-traits library has two main goals: correctness and optimization. Today, I write about optimization. This…

templatesTypeTraits

The Type-Traits Library: Correctness

December 8, 2021

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The two main goals of the type-traits library are compelling: correctness and optimization. Today, I…

templatesTypeTraits

The Type-Traits Library: std::is_base_of

December 3, 2021

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I finished the last article on the Type-Traits library with the challenge of explaining the std::is_base_of…

templatesTypeTraits

The Type-Traits Library: Type Comparisons

November 26, 2021

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In my last post, "The Type-Traits Library: Type Checks" I introduced type checks at compile time with…

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 […]