2 offline days

We will talk about the schedule, sessions, and share the information. Come to the room or join the broadcast to find out what to expect soon!

Anton will talk about new C++ tricks and techniques. You will learn about: LazyPrvalue; ODR violation detection from C++ code; FixedArray; "the funniest bimap". The latest trick with "the funniest bimap"  has already been discussed in the C++ Russia conference chat. The talk details both the background and the final results with benchmarks. Ready-to-use code from the talk is already available at https://userver.tech/

Marcel will talk about the standard ways of working in multi-threaded environment (mutexes, compare and swap, hazard pointer) and the algorithm of taking a snapshot of two atomic "registers". The talk will be useful for newcomers to multithreading and for experienced developers who want to dust off already rusty knowledge.

Alexander will tell you about the C++ implementation of msgpack codec which uses a lot of C++ features, allowing you to pack and unpack completely abstract types, including in compile time, without dynamic memory allocation, zero-copy (or once-copy?) and as branchless as possible.

The talk describes the interacting semantic processes in C++, both from the point of view of the compiler internals and from the point of view of the language standard.

Many of us are engaged in software development, being in a kind of project process. Alexander will talk about the variants of such projects and the role of the developer in these processes. He will touch upon the problem of technical debt: where it comes from and why it doesn't disappear. The talk will discuss what a developer can influence in the production process and what he cannot usually reach. We will definitely consider the peculiarities of C++ development in project activities.

Elbrus as an architecture is very different from mainstream processor architectures. As a consequence, it requires some special optimizations from the compiler. Victor will briefly describe the peculiarities of Elbrus and its special optimizations in the LCC compiler. In more detail, he will talk about the code merge optimization: what it is, why it is needed, and how it works.

Have you ever had to deploy load of nested constructs inside std::variant after every F10? What if you need to debug on Linux and don't have Visual Studio? How to solve some of these problems using the open source LLDB debugger API? Oleg offers to discuss this as part of his TechTalk.

Alexander will describe an approach to writing multithreaded code which helps to avoid typical errors related to using basic synchronization primitives. The idea will be demonstrated with live code examples in modern C++.

Let's see how to annotate finite state machine code with comments and look at the graph in Doxygen.

The speaker will compare flat_map with existing standard associative containers, look at popular existing implementations of flat_map and what is proposed to be added to the standard C++ library, and finally share conclusions about what kind of flat_map we want to have in C++. After the talk, you will have a good understanding of what flat_map is and in what situations it should be used.

The talk is devoted to the problem of deep analysis of the semantics of programs represented in the source code and visual (easy to perceive) display of knowledge about its semantics. A number of approaches and technologies aimed at extraction and visualization of knowledge about the semantics of programs, including "hidden semantics", as well as the general architecture of software systems are proposed.

A talk about the CUDA C++ tool, which allows you to get the most out of the hardware you use.

Vladimir will speak about the work of conventional™ indexes in databases and will tell: how the index speeds up the search; whether to index conditions where; whether to index conditions in order by; whether to index foreign keys; what to do if there are several search criteria; in what order to specify columns in the index; when the index is slow and how to reduce the impact of the index on the application.

Despite the Committee's work on the new language standards, it seems that some invariants cannot be revised, and activists are working in creating their own languages compatible with C++. You will dive back into the design in order to try to answer the question: why? What is so new proposed and what might be missing in C++?

Yandex presents the library that allows to implement JSON serializable structures in C++. In his talk Ivan will speak about high-level design of the library; technical difficulties in implementation (behavior of virtual methods, linking of template classes, etc.); experience in implementing the library in a large code base; attempts to make a good interface.

Not so long ago, the National Security Agency (NSA) published a guide declaring C/C++ "dangerous" and requiring a transition to "safe" C#, Go, Java, Ruby, and Swift. Sergey will analyze this document in detail and tell if the security situation in C++ is really that bad, and what the modern industry offers to solve this issue.

The talk describes the general points of analysis and effective use of modern GPU on the example of computer games. Profiling and optimization for the GPU. A breakdown of techniques from gamedev to improve performance.

Aleksandr will propose a distributed C++ compiler — nocc. It's like distcc, but faster. It's like ccache, but remote.

Have you long wanted to try your hand as a speaker? Can't wait to share your ideas and case studies with the world? Have you seen the C++ Russia talks and feel you can add something of your own to the talks? Then submit an application in advance or sign up for a talk right on the floor!

How to start teaching a programming? Which programming language is better to start? How is easier to move to C++? What is important to teach, what is necessary?

We will talk about modern GPGPU platforms: CUDA, OpenCL, SYCL, oneAPI and others. We will discuss video card manufacturers and development trends. We will figure out what tasks are worth using GPGPU, and what tasks are not. Share our life stories and show that GPGPU development is nothing to be afraid of.

A story about how Graphics APIs are used in modern engines and how the pipeline moves from CPU to GPU.

The talk discusses various mistakes when writing comparison functions (comparators) in API like std::sort — their consequences and the means of detecting them provided by modern toolchains.

A sequel to the talk on programming automation in the USSR. This time we will talk about the Soviet translators created in the 60-70s. The presentation concentrates on simple and actual even today algorithms. The central theme of the talk is the problem of register allocation. What do the developments of the Soviet compiler school and LLVM with SSA and instruction scheduling for modern processors have in common?

Inheritance, virtual functions, v-tables, virtual inheritance — things that are painfully familiar to every C++ developer. These things directly affect performance, the size of our binaries, and sometimes the security of our code. So let's go back to the beginning and understand the details of this machine. Let's look at what's new in this area and how it works under the hood.

Everyone is used to dynamically loaded libraries in large operating systems: it saves the size of the executable and allows updating only the necessary components. However, in bare metal development it is not so popular and widespread. Anton will talk about his experience in this area and discuss the pros and cons of this approach.

It is hard to overestimate the influence of tensor kernels on the development of neural networks in our world. In this talk we will look under the hood of linear algebra libraries, on the basis of which neural network training works.

Let's go back to the basics and consider what asymptotics the various C++ container operations have and why exactly. At the end, we will discuss general guidelines: which container to use and when to use it.

ASIO allows you to use std::future out of the box to handle asynchronous events. But what if you want to use your own implementation of future? Ilya will tell and show you how to do it. At the same time, he will talk about customization below, on the example of io_uring.

Evgenii will share his experience of using Bazel for two projects. In the first project, he used it as a C++/Python developer. In the second project, at Kaspersky Lab, he's part of the team that migrates the code base from CMake to Bazel. He will talk about the killer features of this build system — its advantages and disadvantages.

There's a new model in development for asynchronous computations in C++26 — std::execution, also known as Senders/Receivers. The talk is about the problems this model solves and the solutions it presents, and how it can be used in C++17 with libunifex library.

There were some minor adjustments to the conference program and, unexpectedly, Pavel Filonov gave an improvised standup performance.

Dmitriy will show examples of code with different types of undefined behavior, as well as unobvious effects of its optimization with modern versions of GCC and Clang. He will also showcase a GCC-based safe compiler they have developed to prevent incorrect optimizations of code containing undefined behavior. In addition, the speaker will talk about other methods of improving code safety, both in the safe compiler and in the standard GCC, and their impact on performance.

A huge amount of C++ code in Yandex can be described by the words "distributed computing". The talk is devoted to the C++ framework, which is actively being developed now, inspired by std::ranges and Apache Beam libraries. This framework allows rather compact and simple description of such processes and running them in MapReduce mode to process data tables or in real-time mode to process endless streams (queues) of data.

Let's talk about what sizecoding is and how it differs from classical programming. Let's discuss several algorithms for specific demo effects and their implementation. We will study programming tricks that allow to fit into a given amount of executable code.

Maxim will tell you a lot of practical things about performance optimization. What tools are worth using to find places for optimizations. How not to make a mistake when testing performance. How to correctly select and test algorithms and data structures. In the talk there will be a lot of examples from practice.

We summarize the results of the C++ Russia conference, recall the highlights, and tell you about our future plans. Come in the hall or join the broadcast to make sure you don't miss anything!