[coroutine.handle.resumption] (original) (raw)

17 Language support library [support]

17.12 Coroutines [support.coroutine]

17.12.3 Class template coroutine_handle [coroutine.handle]

17.12.3.4 Resumption [coroutine.handle.resumption]

Resuming a coroutine via resume, operator(), or destroyon an execution agent other than the one on which it was suspended has implementation-defined behavior unless each execution agent either is an instance of std::thread or std::jthread, or is the thread that executes main.

[ Note

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.

— end note

]

[ Note

A concurrent resumption of the coroutine may result in a data race.

— end note

]

void operator()() const;void resume() const;

Preconditions: *this refers to a suspended coroutine.

The coroutine is not suspended at its final suspend point.