C++ Coroutines Advanced: Converting std:future to asio:awaitable

10 months ago

C++ coroutines revolutionize asynchronous programming, especially when integrating std::future with asio::awaitable.
The article presents a thread-safe method to convert std::future<T> to asio::awaitable<T> using asio::async_initiate, avoiding IO thread blocking.
A dedicated thread pool (asio::thread_pool) handles blocking operations, ensuring high performance and non-blocking IO threads.
The solution includes robust exception handling using std::tuple<std::optional<T>, std::exception_ptr> to manage both results and exceptions.
Key advantages include seamless integration with asio coroutines, type safety, and performance optimization by avoiding timer polling.
Practical applications include database operations, file I/O, third-party library integration, and CPU-intensive tasks.
The design ensures executor context preservation and uses move semantics for efficiency, making it ideal for high-performance coroutine applications.

Hasty Briefsbeta