Name: Meeting C++ 2021
Start: 09/11/2021 03:00 PM +00:00
End: 12/11/2021 10:00 PM +00:00

<a href="http://bloomberg.com/company/?utm_medium=cto&amp;utm_content=site-partner&amp;utm_source=site-partner&amp;utm_campaign=MKTG_2021TechConferences%20">Bloomberg</a> is building the world's most trusted information network for financial professionals. Our 6,500+ engineers are dedicated to advancing and building new systems for the <a href="https://www.bloomberg.com/professional/solution/bloomberg-terminal/?utm_medium=cto&amp;utm_content=site-partner&amp;utm_source=site-partner&amp;utm_campaign=MKTG_2021TechConferences%20">Bloomberg Terminal</a> and other products to solve complex, real-world problems. ​
C++ is one of our core programming languages. We are constantly pushing the language to its limits because our code needs to be scalable, reliable and extremely fast -- especially since every millisecond counts in the finance industry. Our C++ experts build everything from low-level libraries and components to some of the most performant financial applications and trading systems in the world. They also contribute to the C++ standard.
Meet Our Team If you would like to talk to a Bloomberg team member, stop by "Rooms" during <a href="https://events.hubilo.com/meeting-cpp-2021/room/618b896fe3153c72379e1413">Nov. 11 lunch break</a> &amp; <a href="https://events.hubilo.com/meeting-cpp-2021/room/618b896fe3153c72379e1417">Nov. 12 lunch break</a> starting at 12:20 pm Central Europe Time.
Don't forget, you can also book a slot today with Bloomberg's Denis Yaroshevskiy or set a reminder to hear him talk on Nov. 12 at 2 pm Central Europe Time. <a href="https://events.hubilo.com/meeting-cpp-2021/session/107537">EVE: A new, powerful open source C++20 SIMD library</a>

Bloomberg

Avast provides over 435 million users globally with next-gen security and privacy products to help keep their online experiences protected from cyberthreats.
Our mission and purpose is to create a world that provides safety and privacy for everyone. This continues to be our strategic purpose and is actually more relevant than ever given people are spending more time online.
At Avast we look to support talent that traditionally has not always had the help needed to forge a career in science, technology, engineering, and mathematics (STEM). We partner with organizations and professional networks around the world, such as Czechitas, so that curious minds from all backgrounds, whatever their gender or culture, have a better chance to follow their passion. Internally, we continually strive to improve our interview and development processes to ensure that everyone has a fair and equal chance to live their dream career.
We currently have 1,800 employees worldwide in 12 countries, with over 50% in R&amp;D. An experienced team of 750+ engineers and 60+ dedicated data scientists and threat researchers work around the clock to assess, protect and respond to these threats. As a tech company, we are also facing the challenge of the underrepresentation of women, which is why this is something we are trying to change. Today, 29% of our employees are women - and the representation of women working in technology within Avast is 15%. This is an increase of 3% and 2,3% since January 2021.
We&rsquo;re hiring now! Find out more about current opportunities worldwide: <a href="https://www.avast.com/careers" target="_blank" rel="noopener">avast.com/careers</a>

Avast

Qt has everything you need for your entire software development journey from design, to development, to deployment and maintenance. Unite designers and developers under one platform, let them work simultaneously on the same projects and using their favourite tools. Qt is the fastest and smartest way to produce industry-leading software that users love. Embedded systems manufacturers in more than 70 industries are building their products with Qt. Are you?

Qt Company

Conan, the C/C++ Package Manager The open source, decentralized and multi-platform package manager to create and share all your native binaries. 
Conan is a MIT-licensed, Open Source package manager for C and C++ development, allowing development teams to easily and efficiently manage their packages and dependencies across platforms and build systems.
 UNIVERSALITY All platforms. Windows, Linux, Apple, FreeBSD, Android, iOS, embedded, cross-building, bare metal, etc.
All build systems. Visual Studio MSBuild, CMake, Makefiles, SCons, etc. Extensible to any build system.
FLEXIBILITY &amp; SPEED Full management of binaries. Create, manage and reuse any number of binaries, for any configuration: platform, compiler, version, architectures&hellip; or build from sources at will.
Fully automated dependency management. Transitive dependencies, conflicts detection, dependency overriding, conditional dependencies.
CONTROL Decentralized client-server architecture. Run your own server for free with JFrog Artifactory on-prem to fully own your packages and binaries.
Conan is Free, open source software with the permissive MIT license. Use, modify, redistribute, and extend it - even for commercial purposes.
&nbsp;
<a href="https://conan.io/downloads.html?utm_source=booth&amp;utm_medium=event&amp;utm_campaign=meeting-c-plus-plus&amp;utm_term=digital-event&amp;utm_content=global-11-2021" target="_blank" rel="noopener">Download Conan here</a>

Conan.io

Whatever your workflow, no matter how big your team is - From one-person to large enterprise - At SonarSource, we have tools to help you improve your Code Quality and Security. Our open-source and commercial code analyzers - <a href="https://www.sonarlint.org/?utm_source=meetingcpp&amp;utm_medium=event&amp;utm_campaign=cpp&amp;utm_content=main_sl" target="_blank" rel="noopener">SonarLint</a>, <a href="https://sonarcloud.io/?utm_source=meetingcpp&amp;utm_medium=event&amp;utm_campaign=cpp&amp;utm_content=main_sc" target="_blank" rel="noopener">SonarCloud</a>, <a href="https://www.sonarqube.org/?utm_source=meetingcpp&amp;utm_medium=event&amp;utm_campaign=cpp&amp;utm_content=main_sq" target="_blank" rel="noopener">SonarQube</a> - Support 27 programming languages. 
C++ analysis is supported through a variety of compilers and toolchains, come see for yourself how you can make your C++ projects more reliable and secure!

SonarSource

Flow Traders is a principal trading firm founded in 2004. We are a leading global technology-enabled liquidity provider, specialized in Exchange Traded Products (ETPs) and awarded Best ETF Market Maker in Europe five times in a row. As a technology company operating in a financial environment, we use our principal technology platform to quote bid and ask prices in thousands of ETP listings amonst others.
We are a proud sponsor of Meeting C++ every year. We are here in person this year. Hope to speak to you soon!

Flow Traders

Meeting C++ is an independent platform for C++, supporting the C++ community by sharing news, blogs and events for C++. The yearly Meeting C++ Conference and the C++ User Group D&uuml;sseldorf is what got Meeting C++ started, and today Jens Weller, the founder of Meeting C++, is fully dedicated to building a global network for C++. With a strong focus on C++, its libraries and community. Also Meeting C++ is an advocate for local C++ User Groups, and has motivated many to join or start a local group.

Meeting C++ online

Jens Weller

Improving hiring in C++

When writing code we usually focus our attention on the happy paths - that&rsquo;s where the interesting stuff happens. But there are also plenty of exciting things happening on the error handling flow, too. Although not universally loved/used, exceptions are a powerful mechanism of maneuvering execution on the unhappy path.&nbsp;
&nbsp; &nbsp;Even if std::exception and related machinery are not your cup of tea, you might care about hardware faults or OS signals like access violations, page errors, ALU overflows.&nbsp;
&nbsp; &nbsp;Let&rsquo;s take a deep dive and explore what happens when an exception occurs, both at the application level and the OS level. We&rsquo;ll explore the unwind process, the compiler generated code, the CRT hooks available and other exception internals. As we&rsquo;re taking the scenic Windows route, we&rsquo;re also going to encounter async exceptions (structured exceptions) on our quest for a better crash. We&rsquo;ll poke into these mechanisms and see how we can leverage them in our application error handling. Did I mention threads? Routing exceptions between threads&hellip; oh my!

Victor Ciura

Exceptional C++

Have you ever seen someone trying to build a house with their bare hands? Probably not. That's what tools are for. To make our lives easier. Are you sure you're using the best tools to help you develop your application?
This talk will demonstrate a plethora of utilities that can help you write better code. And do it much faster. Most examples will be specific to C++, while others are language-agnostic.
You'll learn how to cache your build results, and how to use your coworkers spare CPU cycles to speed up your build times. Moreover, you'll discover how to provide the same build and execution environment for all the developers in your project. Last but not least, we'll showcase ways to check your code during builds and at commit time.

Piotr Gaczkowski

Adrian Ostrowski

Building and Packaging Modern C++

Multi-core systems are ubiquitous and allow concurrent algorithms to be used in a broad field of applications, e.g. robotics and autonomous driving. Usually locking strategies are employed to protect shared data. For real-time systems with high availability requirements this can be undesirable, as it may lead to deadlocks and lockouts in case of partial system failure or delayed threads. Lock-free programming offers an alternative by forgoing locks and using specific atomic operations such as compare-exchange to guarantee race-free access to shared data. This makes it impossible for any failing operation to block another operation and can drastically improve responsiveness while also avoiding problems like priority inversion.
 C++11 introduced a memory model and a multitude of atomic operations to the language. Arguably the most important of these operations is compare-exchange as it is a major building block of most lock-free algorithms. We show how to use these operations to solve various recurring problems in lock-free programming in several C++ examples. These examples explore data sharing without locks where we distinguish between reading and taking data (i.e. non-destructive and destructive reads). We discuss the ABA-problem as well as torn reads and present some practical solutions to these problems.
 A major consideration of lock-free programming is ownership of data and observability of an operation. It is also closely related to memory management since it must be prevented that data which is still used by some concurrent reader is deleted as part of an operation. We show how this can be achieved by essentially managing the memory ourselves.
 Finally we show an advanced technique of cooperative concurrency that can be used if an operation involves several observable steps to be completed. Operations using cooperative concurrency are designed in a way that they can be completed by any other thread in case of the original thread being delayed. The difficulty here is to ensure that an incomplete operation is completed by one thread only.

Matthias Killat

Lock-free programming for real-time systems - how compare-exchange will become your new best friend

Closing Keynote 2020

Stack based exploitation has gotten all the fame, but many platform and compiler mitigations have made it very hard to exploit stack vulnerabilities. Heap based exploits are still very relevant, and since this is black magic for most developers I will here give an introduction to the field.

Patricia Aas

Introduction to Memory Exploitation

We will present the concept of C++ modules support for CMake as well as newly developped features that are potentially less known to the CMake users. We will also take the opportunity to describe which features of CMake are currently in development and how they will help future C++ developers.

Julien Jomier

CMake and the future of C++

EVE is a new library that exposes SIMD in a uniform way across both ARM (neon) and x86 (from sse2 to avx-512).
Demo: vectorized find for x86 and arm on godbolt: https://godbolt.org/z/n6Pds78s6
It's main advantages over similar libraries include: * STL like algorithm support, including zip to operate on multiple ranges . * ARM support (many libraries only support x86) * A very comprehensive math library.
It is liberally licensed and intended to be production quality.
This talk will include a collection of demos for different library features and benchmarks, as well as practical advice on using EVE in your projects.

Denis Yaroshevskiy

Joel Falcou

EVE: A new, powerful open source C++20 SIMD library

Many developers have experienced their programs getting slower as new features are added or the data set of their programs grows. And they might have asked themselves "Why is this happening?"
The short answer is that the new features and larger data sets are more inefficient in using the available hardware resources and system libraries. The long answer will be presented at the session: we will talk about the things to keep in mind when developing fast software and ways to mitigate some of the problems related to performance loss.

Ivica Bogosavljevic

My program was running fast six months ago. What happened

New spot: 15:10, stream will be through streamyard.
What special member functions should you declare or define in your class types? Are you always sure? Is defaulting or deleting a special member function the right thing to do, or does the Rule of Zero rule? Will we always have to consult Howard Hinnants table from ACCU 2014?
From the plethora of compiling combinations of special member functions, this talk will introduce a sane sub-set and give each combination a reason when and where it applies. It will further demonstrate how the kind of base types or non-static data members effect the availability of the operations that a semi-regular/(14^h) normal-behaving type should allow.
We will try to demystify move operations, know why and how we manage resources, and understand how const and reference data members hinder assignability, and what to do about it. Also the mysterious contagiousness of relationship types (aka pointers et al) will be discussed.

Peter Sommerlad

What class types we design and how

In this talk, you'll learn all you need to know about one of the flagship features of C++20; concepts. First, I'll explain the concept behind concepts, why templates needed this extension. Then we'll discover the different ways concepts can be used with functions and with classes. What kind of concepts do we get with the standard library of C++20? That's also something we'll discuss, right before we will start the most interesting part of this session; how to write your own concepts? From the simplest we'll go towards more complex examples while describing all the different constraints we express with concepts. We'll finish with some real-life examples where concepts can document better and/or simplify our codebase.

Sandor Dargo

The concepts of concepts

In this talk Daniel will present how to use C++ coroutines with the Qt Framework. He will present the QCoro library that allows using certain Qt types with coroutines and will show how it makes the code easier to write and read, safer and more streamlined. He will explain how the QCoro library works under the hood and how it can be extended to support custom types.

Daniel Vrátil

C++ Coroutines and Qt

Meeting C++ Update

Panel on Diversity &amp; Inclusion

Tina Ulbrich

Chandler Carruth

Guy Davidson

Filipe Mulonde

Honey Sukesan

Hana Dusíková

Diversity and Inclusion Panel

Closing the conference with Lightning talks!
Hang out with the C++ community after this in the Lounge!
(speakers not visible in Hubilo)

Agenda

Speakers.css-1f6omqm{margin:0;font-size:1.4rem;font-weight:500;line-height:1.5;color:#5d5d5d;font-family:'Poppins',sans-serif;margin-left:0.8rem;}43 Speakers

Phil Nash

Kris Jusiak

Ivica Bogosavljevic

Victor Ciura

Slobodan Dmitrovic

Rainer Grimm

Peter Sommerlad

Tina Ulbrich

Klaus Iglberger

Patricia Aas

Roi Barkan (He/Him)

Marc Mutz

Julien Jomier

Daniel Withopf

Nicolai Josuttis

Leon Matthes

Andreas Fertig

Sandor Dargo

Matthias Killat

Lucian Teodorescu

Christian Eltzschig

Dawid Zalewski

Marek Krajewski

Daniela Engert

Denis Yaroshevskiy

Daniel Vrátil

Filipe Mulonde

Kevlin Henney

Bjarne Stroustrup

Gabriel Dos Reis

Sean Parent

Joel Falcou

Piotr Gaczkowski

Adrian Ostrowski

Jeff Garland

Jens Weller

Céline Dedaj

Alex Korach (she/her)