Thread Synchronization in C++: A Deep Dive into Condition Variables and Wait Patterns

📅 Date: 26 May 2026

🎙️ Speaker: Edgar Ragimov – Senior C++ Engineer at Luxoft Sofia, working on Mercedes-Benz projects

🔐 About the event:

This event will be held in English.

Part of the C/C++ User Group.

Agenda:

• Multithreading in C++ isn’t just about protecting data; it’s about efficient waiting without wasting CPU resources.
• Explore std::condition_variable as a core tool for event-driven multithreading.
• Dive deep into OS-level mechanics of thread synchronization and understand how condition_variable interacts with the OS scheduler.
• Benchmark performance: latency and CPU load comparison between sleep, condition_variable, and C++20’s std::atomic::wait.
• Identify production pitfalls such as spurious or lost wakeups and the "Thundering Herd" problem.
• Real-world patterns: backpressure handling, batching with wait_for, and connection pools.
• Modern C++20 approaches: replacing CV with std::atomic::wait and clean thread termination using std::condition_variable_any and std::stop_token.
• Q&A session.

Key takeaways:

• Understanding the interaction between condition variables, mutexes, predicates, and OS scheduler.
• How to write latency-critical and resource-efficient multithreaded code.
• Practical tips for robust thread synchronization in production.

Who is this event for?

Middle and Senior C++ developers aiming to build predictable and efficient multithreaded systems.

Additional info:

The event is free, but pre-registration is required.

Organized by DEV.BG – a specialized IT Job Board.

Sponsors of the event:

• Bosch
  
• StorPool Storage
  

Speaker Bio:

• Senior C++ Engineer at Luxoft Sofia for the last 3 years, working on Mercedes-Benz projects.
• Born in Russia in 1973, along with the C language.
• Educated as a radio engineer.
• Started programming in 1991 with Turbo Basic and Turbo C++ during university.
• Experience with Windows 2000, Active Directory, Remote Desktop, SQL Server OLAP, and virtualization.
• Over 15 years designing high-tech projects, including VoIP/SIP communication systems.
• Former university and college teacher; private tutor in computer science, physics, and mathematics.
• Relocated to Bulgaria in 2016; family lives between Varna and Bratislava.

Useful links:

• Event page
• C/C++ User Group
• C/C++ Job Offers