Tag: cppconcurrency

A Pattern Language for Expressing Concurrency in Cpp – Lucian Radu Teodorescu – CppCon 2022

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A Pattern Language for Expressing Concurrency in Cpp - Lucian Radu Teodorescu - CppCon 2022
https://github.com/CppCon/CppCon2022

Concurrency is still largely an unsolved problem. It is said that concurrency appeared in the software world in 1965, when Dijkstra provided a solution to the mutual exclusion problem. It is worth mentioning that this happened before 1968, when we officially started to use the term “Software Engineering”. We embraced structured programming in late 1960s and early 1970s for general code, but never managed to apply structured concurrency on a large scale up to this date. We are still writing our concurrent code in a largely unstructured manner. This is mainly the reason for which concurrency is a large frustration within the C++ community.

In C++, we don’t have so far a model to do structured concurrency. However, this is about to change with senders/receivers proposal. The proposal has high chances to land in the C++26 standard. Meanwhile, there are libraries implementing the proposal, so that people can start using it already. But, between having the proposal available to use and using it efficiently, there is a big gap.

This talk aims at providing a framework for programmers to use the senders/receivers proposal for addressing concurrency. We will define a pattern language for concurrency problems. Moreover, we will propose a visual representation of these patterns, making it easier for programmers to picture and argue about the structure of the concurrency. Through all these, the talk will show that concurrency of a software system can be described and analyzed just like any other architectural concern.
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Lucian Radu Teodorescu

Lucian Radu Teodorescu has a PhD in programming languages and is a Staff Engineer at Garmin. He likes challenges; and understanding the essence of things (if there is one) constitutes the biggest challenge of all.
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YouTube Channel Managed by Digital Medium Ltd https://events.digital-medium.co.uk

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A Lock-Free Atomic Shared Pointer in Modern Cpp – Timur Doumler – CppCon 2022

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A Lock-Free Atomic Shared Pointer in Modern Cpp - Timur Doumler - CppCon 2022
https://github.com/CppCon/CppCon2022

std::shared_ptr is a standard smart pointer utility widely used in modern C++. A commonly overlooked property of std::shared_ptr is that while its control block is thread-safe, the shared_ptr itself isn't. To fix this, C++20 introduced std::atomic＜std::shared_ptr＞. However, existing implementations are typically not lock-free, rendering std::atomic＜std::shared_ptr＞ useless for low-latency and real-time applications.

What would it take to implement a lock-free atomic shared_ptr? In this talk, we first discuss the motivation and use case, review how std::shared_ptr works and the history of std::atomic＜std::shared_ptr＞. We then look at existing implementations and different implementation strategies. Finally, we present a new implementation of a lock-free atomic shared_ptr which is portable to multiple platforms.
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Timur Doumler

Timur Doumler is the Developer Advocate for C++ tools at JetBrains and an active member of the ISO C++ standard committee. As a developer, he worked many years in the audio and music technology industry and co-founded the music tech startup Cradle. Timur is passionate about building inclusive communities, clean code, good tools, low latency, and the evolution of the C++ language.
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YouTube Channel Managed by Digital Medium Ltd https://events.digital-medium.co.uk

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An Introduction to Multithreading in C++20 – by Anthony Williams – CppCon 2022

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An Introduction to Multithreading in C++20 - Anthony Williams - CppCon 2022
https://github.com/CppCon/CppCon2022

Where do you begin when you are writing your first multithreaded program using C++20? Whether you've got an existing single-threaded application, or you're starting from scratch, C++20 provides the basic tools to help. In this talk we'll look at the C++20 facilities you should reach for first, and how to use them safely.
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Anthony Williams

Anthony Williams’ primary area of expertise is in the development of multi-threaded applications and libraries in C++. Anthony is the author of C++ Concurrency in Action, published by Manning. He is a UK-based developer and trainer with over 20 years of experience in C++.

Anthony has been an active member of the BSI C++ Standards Panel since 2001, and is author or coauthor of many of the C++ Standards Committee papers that led up to the inclusion of the thread library in the C++11 Standard. He continues to work on new facilities to enhance the C++ concurrency toolkit, both with standards proposals, and implementations of those facilities.

Anthony lives in the far west of Cornwall, England, where he currently spends most of his time developing automotive software for Woven Planet.
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Videos Filmed & Edited by Bash Films: http://www.BashFilms.com
YouTube Channel Managed by Digital Medium Ltd https://events.digital-medium.co.uk

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