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async_immediate (1 of 2 overloads)

Launch a trivial asynchronous operation that completes immediately.

template<
    typename Executor,
    typename NullaryToken = default_completion_token_t<Executor>>
DEDUCED async_immediate(
    const Executor & ex,
    NullaryToken && token = default_completion_token_t< Executor >(),
    constraint_t<(execution::is_executor< Executor >::value &&can_require< Executor, execution::blocking_t::never_t >::value)||is_executor< Executor >::value >  = 0);

The async_immediate function is intended for use by composed operations, which can delegate to this operation in order to implement the correct semantics for immediate completion.

Parameters

ex

The asynchronous operation's I/O executor.

token

The completion token.

The completion handler is immediately submitted for execution by calling dispatch on the handler's associated immediate executor.

If the completion handler does not have a customised associated immediate executor, then the handler is submitted as if by calling post on the supplied I/O executor.

Completion Signature
void()

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