Yes, the library design is based on that article. However, there are couple of simplifications that were done in the meantime. Most importantly, the article g

Yes, the library design is based on that article. However, there are couple of simplifications that were done in the meantime. Most importantly, the article goes into great pains to define a single API that deals with both soft and hard cancellation of coroutines. The library takes advantage of the fact that soft cancellation is always application-specific and provides a single API to do hard cancellation (hclose(h)). User is free to implement the soft cancellation themselves.