std::coroutine_handle<Promise>::operator(), std::coroutine_handle<Promise>::resume
| Member of other specializations | ||
void operator()() const; void resume() const; |
(1) | (since C++20) |
Member of specialization std::coroutine_handle<std::noop_coroutine_promise> |
||
constexpr void operator()() const noexcept; constexpr void resume() const noexcept; |
(2) | (since C++20) |
*this refers, or does nothing if the coroutine is a no-op coroutine.
The behavior is undefined if *this does not refer to suspended coroutine, or the coroutine is not a no-op coroutine and suspended at its final suspend point. A concurrent resumption of the coroutine may result in a data race.
Resumption of a coroutine on an execution agent other than the one on which it was suspended has implementation-defined behavior unless each execution agent either is a thread represented by std::thread or std::jthread, or is the thread executing main.
Parameters
(none).
Return value
(none).
Exceptions
If an exception is thrown from the execution of the coroutine, the exception is caught and unhandled_exception is called on the coroutine's promise object. If the call to unhandled_exception throws or rethrows an exception, that exception is propagated.
Notes
A coroutine that is resumed on a different execution agent should avoid relying on consistent thread identity throughout, such as holding a mutex object across a suspend point.
Example
See also
|
(C++20)
|
destroys a coroutine (public member function) |
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