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this_coro::reset_cancellation_state (2 of 3 overloads)

Returns an awaitable object that may be used to reset the cancellation state of the current coroutine.

    typename Filter>
constexpr unspecified reset_cancellation_state(
    Filter && filter);

Let P be the cancellation slot associated with the current coroutine's co\_spawn completion handler. Assigns a new cancellation_state object S, constructed as S(P, std::forward<Filter>(filter)), into the current coroutine's cancellation state object.

boost::asio::awaitable<void> my_coroutine()
  co_await boost::asio::this_coro::reset_cancellation_state(

  // ...

The cancellation state is shared by all coroutines in the same "thread of execution" that was created using co_spawn.