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CppCon 2025 Cutting C++ Exception Time by 93.4% -- Khalil Estell

By Blog Staff | Aug 4, 2025 11:07 AM | Tags: None

Registration is now open for CppCon 2025! The conference starts on September 13 and will be held in person in Aurora, CO. To whet your appetite for this year’s conference, we’re posting some upcoming talks that you will be able to attend this year. Here’s another CppCon future talk we hope you will enjoy – and register today for CppCon 2025!

Cutting C++ Exception Time by 93.4%

Monday, September 15 11:00 - 12:00 MDT

by Khalil Estell

Summary of the talk:

Have you ever been "nerd sniped"? When I realized that exceptions are capable of reducing binaries sizes, it felt like the only thing standing in the way of its adoption was its performance concerns. I couldn't let it go. I wanted to see how far the algorithm could be pushed. In 2024, I set out to just that: making C++ exceptions blazingly fast for embedded platforms. A year later, I've achieved a +90% performance improvement for ARM microcontrollers.

This talk takes you behind the scenes of this journey. I'll share the complete roadmap—from initial benchmarking to optimization—revealing techniques applicable to any performance-critical C++ system. But this isn't just a technical story; it's a testament to the power of community collaboration and how the C++ community summoned this talk. Even if you've sworn off exceptions forever, this talk still delivers value. It's a course in performance optimization which applies across the entire C++ ecosystem.

Join me for a deep dive into what happens when obsession meets optimization—and discover just how fast C++ can really be. Whether you're writing embedded firmware, high-frequency trading systems, a game, or a web server in C++ you'll walk away with techniques to dramatically improve your code.

You'll discover:

  1. Building precise measurement frameworks for cpu cycle improvements
  2. Navigating and modernizing a 25-year-old codebase
  3. Demystifying and eliminating the actual sources of non-determinism
  4. Leveraging community expertise to shape product requirements
  5. Using data-oriented design to convert O(log(n)) operations to O(1)
  6. Working within fixed ABI constraints without compromising performance
  7. Exploring the future landscape of C++ exception handling


Khalil is a ISO C++ Committee Member and has extensive experience writing production firmware.

CppCon 2025 Keynote: Concept-based Generic Programming -- Bjarne Stroustrup

By Blog Staff | Aug 3, 2025 01:56 AM | Tags: None

Registration is now open for CppCon 2025! The conference starts on September 13 and will be held in person in Aurora, CO. To whet your appetite for this year’s conference, we’re posting some upcoming talks that you will be able to attend this year. Here’s another CppCon future talk we hope you will enjoy – and register today for CppCon 2025!

Concept-based Generic Programming

Monday, September 15 08:45 - 10:30 MDT

by Bjarne Stroustrup

Summary of the talk:

This talk presents programming techniques to illustrate the facilities and principles of C++ generic programming using concepts. Concepts are C++’s way to express constraints on generic code. As an initial example, it provides a simple type system that eliminate narrowing conversions and provides range checking.

Concepts are used throughout to provide user-defined extensions to the type system. The aim is to show their utility and the fundamental ideas behind them, rather than to provide a detailed or complete explanation of C++’s language support for generic programming or the extensive support provided by the standard library.

The final sections briefly present design rationales and origins for key parts of the concept design, including use patterns, the relationship to Object-Oriented Programming, value arguments, syntax, concept type-matching, and definition checking. They also mention static reflection, a C++26 improvements in the support of general programming.


Bjarne Stroustrup is the designer and original implementer of C++ as well as the author of The C++ Programming Language (4th Edition) and A Tour of C++ (3rd edition), Programming: Principles and Practice using C++ (2nd Edition), and many popular and academic publications. He is a professor of Computer Science in Columbia University in New York City. Dr. Stroustrup is a member of the US National Academy of Engineering, and an IEEE, ACM, and CHM fellow. He received the 2018 Charles Stark Draper Prize, the IEEE Computer Society's 2018 Computer Pioneer Award, and the 2017 IET Faraday Medal. He did much of his most important work in Bell Labs. His research interests include distributed systems, design, programming techniques, software development tools, and programming languages. To make C++ a stable and up-to-date base for real-world software development, he has been a leading figure with the ISO C++ standards effort for more than 30 years. He holds a master’s in Mathematics from Aarhus University, where he is an honorary professor in the Computer Science Department, and a PhD in Computer Science from Cambridge University, where he is an honorary fellow of Churchill College. www.stroustrup.com

Talks and a first schedule for Meeting C++ 2025

By Meeting C++ | Jun 26, 2025 06:51 AM | Tags: meetingcpp event conference community

This week Meeting C++ published the accepted talks and a first schedule for the conference in November.

Schedule for Meeting C++ 2025

The talks for Meeting C++ 2025

by Jens Weller

From the article:

Top 10 voted talks

    To Err is Human: Robust Error Handling in C++26 - Sebastian Theophil
    Seeing all possible paths forward - Hana Dusíková
    Code Reviews: Building Better Code and Stronger Teams - Sandor Dargo
    The Two memory Models - Anders Schau Knatten
    How to become obsolete: a guide to software engineering mentorship - Roth Michaels
    Branch Prediction: Lessons from the hot path - John Farrier
    Towards Safety and Security in C++26 - Daniela Engert
    The data-parallel types (SIMD) library in C++26 - Rainer Grimm
    The Code is Documentation Enough - Tina Ulbrich
    Range adaptors - 5 years after C++20 - Hannes Hauswedell
    Speed for free - current state of auto-vectorizing compilers - Stefan Fuhrmann

 

Announcing the 3rd Keynote for Meeting C++ 2025: its Anthony Williams!

By Meeting C++ | Jun 19, 2025 08:46 AM | Tags: meetingcpp events conference

With this announcement the keynotes for this years Meeting C++ conference are complete!

Announcing the 3rd Keynote for Meeting C++ 2025: its Anthony Williams!

by Jens Weller

From the article:

Today I have the honor to announce that Anthony Williams completes the keynotes for Meeting C++ 2025!

Anthony Williams is well known for his book "C++ Concurrency in Action", has been an active in the committee through the BSI since 2001. He is well known for his work on concurrency and one of the architects and implementers of std::thread and other concurrency features in C++. He gave an An introduction to multithreading in C++20 at Meeting C++ 2022 in the online track. I am looking forward to welcome Anthony in person in Berlin this year!

The voting on the talks for Meeting C++ 2025 has begun!

By Meeting C++ | Jun 11, 2025 07:38 AM | Tags: meetingcpp community

This week the voting for the talks at Meeting C++ 2025 starts!

The voting on the talks for Meeting C++ 2025 has begun!

by Jens Weller

From the article:

Once again its time for the C++ community to take a look at the submitted talks for Meeting C++ 2025! Thanks to all folks who have submitted a talk to this years conference! Your contribution will create another great conference in Berlin and online! And special thanks to all folks who have bought tickets already for the conference, you'll have a bit more weight in the voting to shape this years program!

With your voting session you can contribute to the talk selection for this years conference. In total 107 talks are submitted by 73 speakers. With this year the call for talks closes earlier than in the past, when for a few years it had extended to match the submission date with CppCon. Since last year CppCon has moved its deadline into early/mid May, which is a bit too early. For the future I plan to have the call for talks close around the beginning of June. A period of 2 months to submit should be enough, also this allows for an earlier release of the program. This than gives speakers more time to get their talks ready and Meeting C++ more time to advertise the program...

 

CppCon 2024 Strategies for Developing Safety-Critical Software in C++ -- Emily Durie-Johnson

By Blog Staff | May 30, 2025 12:45 PM | Tags: None

strategies-durie.pngRegistration is now open for CppCon 2025! The conference starts on September 15 and will be held in person in Aurora, CO. To whet your appetite for this year’s conference, we’re posting videos of some of the top-rated talks from last year's conference. Here’s another CppCon talk video we hope you will enjoy – and why not register today for CppCon 2025!

Lightning Talk: Strategies for Developing Safety-Critical Software in C++

by Emily Durie-Johnson

Summary of the talk:

This talk delves into the importance of a safety-first mindset in software development within the medical device domain. It explores the intersection of C++ and industry standards that ensure safety-critical software. Attendees will learn to ask guiding questions during code development that emphasize the importance of coding as if the technology will be used on their loved ones. With real-world examples and best practices, this session highlights the personal and professional responsibilities of engineers in safety-critical fields to create reliable software.

Team tickets and asking questions for Meeting C++ 2025

By Meeting C++ | May 27, 2025 07:20 AM | Tags: meetingcpp events conference

Two news items for Meeting C++ 2025, introducing team tickets and adding questions to the ticket ordering process to know your t-shirt size and more.

New Team Tickets for Meeting C++ 2025

by Jens Weller

From the article:

I'd like to make it easier to send your team to Meeting C++ 2025 with offering a team ticket.

I can't really break with the 1:1 relation between a ticket and its attendee, but I can offer a ticket...

Asking questions with the tickets for Meeting C++ 2025

by Jens Weller

From the article:

There is an update I've made to the tickets for this year, adding Questions that you may answer when registering for Meeting C++ 2025.

This years conference keeps me busy right now, but I quickly wanted to bring you an update on the ticktes. For the first time Meeting C++ includes a few questions with the registration for attendees. This way we get more accurate data on, but also for the attendees...

 

 

 

Visit Meeting C++ 2025 with assistance and your wheelchair

By Meeting C++ | May 22, 2025 07:14 AM | Tags: meetingcpp conference community basics

Sharing an opportunity for those needing assistance to travel and lodge: the conference hotel of Meeting C++ has special rooms for you!

Visit Meeting C++ 2025 with assistance and your wheelchair

by Jens Weller

From the article:

As you may not be aware about this opportunity, I wanted to highlight that the Vienna House Andel's Berlin Hotel offers accessibility rooms for those who need them.

a picture showing a shower with hand rails and a chair

Meeting C++ in Berlin has been visited by folks in wheel chairs, and I thought I highlight this possiblity. Recently when looking through pictures provided by my hotel contact, I've seen aboves picture of an accessible bathroom, which sparked my interest in finding out more about them. While I knew they existed, I didn't know the Hotel has actually 14 rooms of them, and that they each have a twin room for an assistant to stay. So if such a room is needed for your stay, wether you bring a wheel chair or not - now you know that its possible...