Tag Archive for: move

Posts

ClassIdioms

Regular Types

January 29, 2023

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The concept of a regular type goes back to the creator of the Standard Template Library (STL) Alexander…

classes

The Rule of Zero, or Six

January 22, 2023

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The rule of zero, or six, is one of the advanced rules in modern C++. I wrote in my current book "C++…

Black Forest gateau20

C++ Core Guidelines: Rules about Don’ts

February 16, 2018

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This post is about don'ts. Here are this post's two most important rules: Don't use std::move thoughtless…

perfectForwarding1

Perfect Forwarding

December 24, 2016

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Today, we solve " ... a herefore unsolved problem in C++" (Bjarne Stroustrup). To make the long story…

moveAlgorithm

Move Semantis: Two Nice Properties

December 22, 2016

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I will talk about two nice properties of the move semantic in this post that is not so often mentioned.…

copy

Copy versus Move Semantics: A few Numbers

December 20, 2016

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A lot was written about the advantages of move semantics to copy semantics. Instead of an expensive copy…

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A Lock-Free Stack: Atomic Smart PointerFebruary 17, 2025 - 11:47 am
The easiest way to solve this memory leak issue from the last post is to use a std::shared_ptr. Atomic Smart Pointer There are two ways to apply atomic operations on a std::shared_ptr: In C++11, you can use the free atomic functions on std::shared_ptr. With C++20, you can use atomic smart pointers. C++11 Using atomic operations […]
A Lock-Free Stack: A Complete ImplementationFebruary 10, 2025 - 3:01 pm
My last lock-free stack implementation was incomplete. It only supported push operations. Let’s change this. The following paragraph about sequential consistency is optional. You can easily ignore it. Sequential Consistency In my examples, I use the default memory ordering: sequential consistency. The reason is simple. Sequential consistency provides the strongest guarantees of all memory ordering […]
My Next Mentoring Program: “Generic Programming (Templates) with C++” startsFebruary 4, 2025 - 4:51 pm
My next mentoring program, “Embedded Programming with Modern C++,” starts on January 31st. Registration is open. Here are more details. Embedded Programming with Modern C++ The mentoring program consists of 16 stations. You have to invest at least 3 hours per week for each one. This means the program takes four months, and you can […]
A Lock-Free Stack: A Simplified ImplementationFebruary 3, 2025 - 10:37 am
Today, I continue my mini story about lock-free data structures. General Considerations From the outside, the caller’s responsibility (application) is to protect the data. From inside, the data structure is responsible for protecting itself. A data structure that protects itself so a data race cannot appear is called thread-safe. First, what general considerations must you […]
Deferred Reclamation in C++26: Read-Copy Update and Hazard PointersJanuary 27, 2025 - 12:23 pm
Before I dive into lock-free programming, there’s a little bit of theory necessary. A common problem in concurrency is the so-called ABA problem. That means you read a variable twice, which returns the same value each time, A. Therefore, you conclude that nothing changed in between. But you forgot the B. Let me first use […]
std::format ExtensionJanuary 20, 2025 - 11:55 am
Displaying the address of an arbitrary pointer in C++ 20 fails but succeeds with C++26. C++20 Only void, const void, and std::nullptr_t pointer types are valid. If you want to display the address of an arbitrary pointer, you must cast it to (const) void*. // formatPointer20.cpp #include <format> #include <iostream> #include <string> int main() { […]