Video & On-Demand : Standard C++

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CppCon 2023 Linkers, Loaders and Shared Libraries in Windows, Linux, and C++ -- Ofek Shilon

By Blog Staff | Jun 28, 2024 11:19 AM | Tags: None

Registration is now open for CppCon 2024! 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 2024!

Linkers, Loaders and Shared Libraries in Windows, Linux, and C++

by Ofek Shilon

Summary of the talk:

This talk would give a crash-intro to linkers, loaders and the layout of program binaries, and explore just enough internals to understand some observable differences in C++ builds between Linux and Windows.

We will discuss the GOT, the PLT, symbol visibility, interposition, lazy binding and more. There will be a lot of details, but also a lot of 'why's and opinions.

We will also touch/rant on what the C++ standard has to say on adjacent matters. There's a good chance you've heard before "shared libraries are outside the scope of the standard", but it doesn't mean what you think it does.

CppCon 2023 Libraries: A First Step Toward Standard C++ Dependency Mgmt--Bret Brown & Bill Hoffman

By Blog Staff | Jun 27, 2024 11:14 AM | Tags: None

Plenary: Libraries - A First Step Toward Standard C++ Dependency Management

by Bret Brown & Bill Hoffman

Summary of the talk:

Prebuilt libraries have existed for decades… they even predate C++! After all these years, techniques to use prebuilt libraries are still ad hoc and difficult to maintain. A root cause of this variety of techniques is the variety of things that are C++ libraries: header-only libraries, statically-linked archives, dynamically-linked binaries, and so on. The consuming projects need to build against these libraries in consistent ways or risk unproductive workflows – and potentially, even catastrophic failure in production environments. This lack of convergence creates enormous interoperability problems across broad portions of the worldwide programming ecosystem, not just the C++ parts of it.

This talk will explore the complexities of defining what is a “C++ library.” It will then present the joint work of Kitware, Bloomberg, and others toward a preliminary design for creating initial standards for dependency management in C++ – metadata files to describe prebuilt libraries. A roadmap for maturing the design will also be shared, including proposing a standard definition for C++ libraries, building on previous proposals such as P1313: Package Specification (https://wg21.link/P1313).

This talk is intended for anyone who produces, maintains, or consumes C++ libraries. Special knowledge of C++ tooling, build systems, or package managers is not required.

Sean Baxter: Safe C++

By Jordi Mon Companys | Jun 27, 2024 07:33 AM | Tags: safety

Sean Baxter demonstrates memory safe C++ using his Circle compiler

Safe C++
Sean Baxter

From the talk:

Does a subset of a superset of C++ exists that achieves similar safety guarantees to rust, is useful and expressive enough, and is compatible with today's C++? If so, is anyone mad enough to do it? There is an answer to that

CppCon 2023 Let's Fix Sparse Linear Algebra with C++. It'll Be Fun and Easy! -- Benjamin Brock

By Blog Staff | Jun 24, 2024 11:11 AM | Tags: None

Lightning Talk: Let's Fix Sparse Linear Algebra with C++. It'll Be Fun and Easy!

by Benjamin Brock

Summary of the talk:

Sparse linear algebra is hard. There are a large variety of different sparse linear algebra formats, and they all require obtuse index arithmetic in order to use. But what if we could fix this? In this talk, I'll present an idea for "fixing sparse linear algebra" using customization points, the ranges library, and high-level multi-dimensional iteration.

CppCon 2023 Implementing Coroutines Using C++17 -- Alon Wolf

By Blog Staff | Jun 22, 2024 11:08 AM | Tags: None

Lightning Talk: Implementing Coroutines Using C++17

by Alon Wolf

Summary of the talk:

In this lightning talk, we will explore the journey of implementing coroutines in C++17 before they were added to the language in C++20.

The implementation uses macros, template metaprogramming, assembly functions, and more that resulting in working coroutines despite somewhat "horrible" code.

Discover how local variables within the coroutine body were leveraged to calculate frame sizes and ensure correct variable lifetimes during suspension, resumption, and destruction.

CppCon 2023 C++ Memory Model: from C++11 to C++23 -- Alex Dathskovsky

By Blog Staff | Jun 20, 2024 11:04 AM | Tags: None

C++ Memory Model: from C++11 to C++23

by Alex Dathskovsky

Summary of the talk:

In the realm of C++ development, threading and memory management play a crucial role in crafting highly parallel and optimized programs. However, the absence of a memory model in C++98 posed challenges. Thankfully, with the advent of C++11, significant changes were introduced, including the introduction of a memory model, which brought forth a plethora of new and exciting tools for developers to leverage. This talk aims to delve into the realm of the C++ memory model, showcasing the arsenal of tools at our disposal. Attendees will gain insights into how CPUs and compilers optimize code and understand the criticality of adhering to the memory model correctly. Practical guidelines on utilizing these tools effectively will also be explored.

Throughout the talk, we will illustrate practical examples and share best practices for utilizing the diverse set of tools now available to us. From atomic operations to memory barriers, we will explore the range of techniques that allow us to develop robust and thread-safe code.

This talk will also illustrate the newer tools from newer C++ standards like JThread and so this talk will show how memory model is used and how it advanced since C++11.

CppCon 2023 Help! My Expression Template Type Names Are Too Long! -- Braden Ganetsky

By Blog Staff | Jun 18, 2024 11:01 AM | Tags: None

Lightning Talk: Help! My Expression Template Type Names Are Too Long!

by Braden Ganetsky

Summary of the talk:

Even the name of this talk is too long! If we're ever working with expression templates, we can easily make type names long enough to slow down compilation time. Suddenly our "zero-overhead" expression templates start giving a large compile time overhead. I'll show off a C++20 trick to fix this problem.

CppCon 2023 Filling the Bucket: Reading Code, C++ Code Interviews & Exams -- Amir Kirsh

By Blog Staff | Jun 16, 2024 10:57 AM | Tags: None

Lightning Talk: Filling the Bucket: Reading Code, C++ Code Interviews & Exams

by Amir Kirsh

Summary of the talk:

We are going to review and practice a reading code challenge. Reading code skills are quite important, maybe even more than writing code. So let's dive together into filling the bucket code reading challenge!

CppCon 2023 Back to Basics: The Rule of Five in C++ -- Andre Kostur

By Blog Staff | Jun 13, 2024 11:31 AM | Tags: None

Back to Basics: The Rule of Five in C++

by Andre Kostur

Summary of the talk:

Designing a class to behave correctly when copied and moved takes a lot of thought. The Core Guidelines provide guidance to streamline that work. In this talk we are going to look at the Core Guideline known as "the Rule of Five", how it came about, and is there anything better.

C++ Safety with Herb Sutter

By Jordi Mon Companys | Jun 11, 2024 11:52 PM | Tags: security memory_safety c++23

The U.S. government released a report calling on the technical community to proactively reduce the attack surface area of software infrastructure. Herb tackles the concerns cast on C++ on memory safety.

C++ Safety with Herb Sutter

by Jordi Mon Companys in Software Engineering Daily

From the interview:

It's really, really important as native languages C and C++, not to have our heads in the sand and say, "Oh, well, we've been hearing this for years. All is well." No, it's not. We have work to do. But it's also important not to go to the other extreme, and think that, "Oh, if we just magically wave a wand and make all the world's software, suddenly convert overnight to memory-safe languages", which would be great if it can be done. It's not technically feasible. ut even if we could do that, we're not going to make most of the attacks go away.

Safe C++ Sean Baxter

Safe C++
Sean Baxter