How do I bridge coroutines with existing async APIs?

Bridging coroutines with existing async APIs can significantly enhance the performance and readability of your code. Coroutines allow for more straightforward asynchronous programming, and when combined with existing async APIs, they can make your applications more efficient.

In this example, we will demonstrate how to bridge a coroutine with an existing async API using C++. This example assumes that you have a basic understanding of C++ and asynchronous programming.

#include #include #include struct Task { struct promise_type { Task get_return_object() { return {}; } std::suspend_never initial_suspend() { return {}; } std::suspend_never final_suspend() noexcept { return {}; } void unhandled_exception() {} void return_void() {} }; }; // Example of an asynchronous API that returns a future std::future asyncApiCall() { return std::async([] { std::this_thread::sleep_for(std::chrono::seconds(1)); return 42; }); } // Bridging coroutine with async API Task bridgeWithAsyncApi() { auto future = asyncApiCall(); co_await std::suspend_always{}; // Simulate await auto result = future.get(); // Get the result from the future std::cout << "Result from async API: " << result << std::endl; } int main() { bridgeWithAsyncApi(); return 0; }

Keywords: C++ coroutines async APIs bridging asynchronous programming