C++ coroutine tutorial - computing fibonacci using C++ coroutines

C++ coroutine tutorial using async computation of fibonacci

I’ve been experimenting with coroutines recently and I found that information on C++ coroutines are very difficult to find. I’m planning to write a series of C++ coroutine blogs on how to use C++ coroutines, how they work, and how to write your own library that uses C++ coroutines. My last post Basic Concepts are probably a bit too high-level and is not really meant for people who are new to C++ coroutines. So I’m going to start over with a simple C++ coroutine tutorial instead.

Callback pain

A gentle introduction to promise + async/await model and how to wrap existing callback code to the new model

Callback pain

Writing your own C++ coroutines: getting started

Discuss high-level concepts with C++ coroutines

I’ve been spending some time looking at how to wrap some of our existing C API that is based on completion callbacks, with C++ coroutines. I just got it working tonight and I thought I’d document what I’ve learned in this process and hopefully help other folks. My focus is the stackless coroutine / resumable functions proposed by Gor Nishanov et al and it is supported by Microsoft VC++ and Clang. I won’t be talking about boost::coroutine. I also won’t be talking about how to use coroutines - this is about how to write your own light-weight coroutine plumbing for library authors.


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