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C++20

I’m Proud to Present my New Book: C++20

December 17, 2020

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I'm proud to present the early release of my book to C++20 on LeanPub. The book is 50 % done and has…

TimelineCpp20CoreLanguage

Synchronization with Atomics in C++20

December 12, 2020

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Sender/receiver workflows are pretty common for threads. In such a workflow, the receiver is waiting…

TimelineCpp20CoreLanguage

Atomic References with C++20

December 8, 2020

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Atomics receives a few essential extensions in C++20. Today, I start with the new data type std::atomic_ref. The…

C++20

Looking for Proofreaders for my New Book: C++20

December 5, 2020

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I'm looking for proofreaders for my new book "C++20". The book serves two purposes. It provides you the…

TimelineCpp20CoreLanguage2

Bit Manipulation with C++20

December 3, 2020

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This post concludes my presentation of library features in C++20. Today I am writing about the class…

TimelineCpp20CoreLanguage

Feature Testing with C++20

November 27, 2020

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When your program's compilation broke with a brand-new C++20 feature, you often end with a few questions:…

TimelineCpp20CoreLanguage

Safe Comparisons of Integrals with C++20

November 17, 2020

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When you compare signed and unsigned integers, you may not get the result you expect. Thanks to…

TimelineCpp20CoreLanguage

Calendar and Time-Zones in C++20: Calendar Dates

November 1, 2020

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A new type of the chrono extension in C++20 is a calendar date. C++20 offers various ways to create a…

TimelineCpp20CoreLanguage

Calendar and Time-Zones in C++20: Time of Day

October 25, 2020

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With C++20, the chrono library from C++11 receives essential additions. The most prominent ones are calendar…

TimelineCpp20CoreLanguage

Calendar and Time-Zones in C++20: Time-Zones

October 23, 2020

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This post concludes my introduction to the chrono extension in C++20. Today I present the time-zones…

TimelineCpp20CoreLanguage

More and More Utilities in C++20

October 18, 2020

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Today, I present a few utilities for calculating the midpoint of two values, checking if a std::string…

TimelineCpp20CoreLanguage

Calendar and Time-Zones in C++20: Handling Calendar Dates

October 18, 2020

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In my last post, "Calendar and Time Zone in C++20: Calendar Dates", I presented the new calendar-related…

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 […]