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

Video Description

https://cppcon.org/ --- 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. --- 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. --- Work at Hudson River Trading (HRT): https://tinyurl.com/safxfctf --- Videos Filmed & Edited by Bash Films: http://www.BashFilms.com YouTube Channel Managed by Digital Medium Ltd https://events.digital-medium.co.uk #cppcon #programming #cpp