coro/awaiter.hpp

The following code example is taken from the book
C++20 - The Complete Guide by Nicolai M. Josuttis, Leanpub, 2021
The code is licensed under a Creative Commons Attribution 4.0 International License.

---

// raw code

#include <iostream>

class Awaiter {
public:
  bool await_ready() const noexcept {
    std::cout << "   await_ready()\n";
    return false;      // do suspend
  }

  void await_suspend(auto hdl) const noexcept {
    std::cout << "   await_suspend()\n";
  }

  void await_resume() const noexcept {
    std::cout << "   await_resume()\n";
  }
};