Last change
on this file since 1ae3ac46 was
7bef8cf,
checked in by Peter A. Buhr <pabuhr@…>, 18 months ago
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start paper on llheap
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-
Property mode set to
100644
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File size:
1.4 KB
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1 | #include <iostream> |
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2 | #include <experimental/coroutine> |
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3 | |
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4 | struct counter_cor { |
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5 | struct promise_type { |
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6 | counter_cor get_return_object() { |
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7 | return counter_cor(std::experimental::coroutine_handle<promise_type>::from_promise(*this)); |
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8 | } |
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9 | |
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10 | auto initial_suspend() { return std::experimental::suspend_never(); } |
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11 | auto final_suspend() { return std::experimental::suspend_never(); } |
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12 | |
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13 | void return_void() {} |
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14 | |
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15 | void unhandled_exception() {} |
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16 | }; |
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17 | |
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18 | std::experimental::coroutine_handle<promise_type> _coroutine = nullptr; |
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19 | |
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20 | explicit counter_cor(std::experimental::coroutine_handle<promise_type> coroutine) |
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21 | : _coroutine(coroutine) |
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22 | {} |
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23 | |
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24 | ~counter_cor() { |
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25 | if(_coroutine) { _coroutine.destroy(); } |
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26 | } |
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27 | |
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28 | counter_cor() = default; |
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29 | counter_cor(counter_cor const &) = delete; |
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30 | counter_cor& operator=(counter_cor const &) = delete; |
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31 | |
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32 | counter_cor(counter_cor&& other) { |
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33 | std::swap(_coroutine, other._coroutine); |
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34 | } |
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35 | |
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36 | counter_cor& operator=(counter_cor&& other) { |
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37 | if(&other != this) { |
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38 | _coroutine = other._coroutine; |
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39 | other._coroutine = nullptr; |
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40 | } |
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41 | return *this; |
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42 | } |
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43 | |
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44 | void resume() { _coroutine.resume(); } |
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45 | }; |
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46 | |
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47 | counter_cor counter() { |
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48 | std::cout << "Counter: called\n"; |
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49 | for(unsigned i = 1;; i++) { |
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50 | co_await std::experimental::suspend_always{}; |
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51 | std::cout << "Counter: Resumed " << i << " time(s)\n"; |
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52 | } |
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53 | } |
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54 | |
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55 | int main() { |
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56 | std::cout << "Main: calling counter\n"; |
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57 | auto c = counter(); |
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58 | std::cout << "Main: resumes\n"; |
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59 | c.resume(); |
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60 | c.resume(); |
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61 | std::cout << "Main: done\n"; |
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62 | } |
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