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The New pdf Bundle is Ready: C++20 Modules

September 15, 2021

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

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Modern C++ Collection

September 10, 2021

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Get all my books about modern C++ in one bundle. C++20 Concurrency with Modern C++, including…

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From Variadic Templates to Fold Expressions

September 8, 2021

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In my last two posts, "Variadic Templates or the Power of Three Dots" and "More about Variadic Templates",…

C++20 Modules: Private Module Fragment and Header Units

September 2, 2021

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In the last weeks, I learned something new about modules in C++20: private modules fragments and header…

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The First Big Update of My C++20 Book

August 28, 2021

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I'm happy to announce the first big update of my C++20 book. The update was mainly due to the improved…

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Which pdf bundle do you want? Make your choice!

August 23, 2021

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

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More about Variadic Templates …

August 13, 2021

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There is a lot of power in the strange-looking three dots that are heavily used in the Standard Template…

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Variadic Templates or the Power of Three Dots

August 6, 2021

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A variadic template is a template that can have an arbitrary number of template parameters. If you see…

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Template Instantiation

July 29, 2021

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Template instantiation is creating a concrete function or a concrete class out of a function or class…

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And the Winners for the Five Vouchers for Stephan’s Book “Clean C++20” are

July 28, 2021

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I'm happy to present the five winners in this post including their answers. I was happy…

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Performance of the Parallel STL Algorithms

July 22, 2021

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In my last post, "Parallel Algorithms of the STL with the GCC Compiler", I presented the necessary theory…

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Parallel Algorithms of the STL with the GCC Compiler

July 16, 2021

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GCC supports my favorite C++17 feature: the Standard Template Library (STL) parallel algorithms. I recognized…

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 […]