Traits type used to obtain the cancellation_slot
associated with
an object.
template< typename T, typename CancellationSlot = cancellation_slot> struct associated_cancellation_slot
Name |
Description |
---|---|
If T has a nested type cancellation_slot_type, T::cancellation_slot_type. Otherwise CancellationSlot. |
Name |
Description |
---|---|
get [static] |
If T has a nested type cancellation_slot_type, returns t.get_cancellation_slot().
Otherwise returns type(). |
A program may specialise this traits type if the T
template parameter in the specialisation is a user-defined type. The template
parameter CancellationSlot
shall be a type meeting the CancellationSlot requirements.
Specialisations shall meet the following requirements, where t
is a const reference to an object of
type T
, and s
is an object of type CancellationSlot
.
type
that identifies a type meeting the CancellationSlot requirements.
get
,
callable as get(t)
and with return type type
or a (possibly const) reference to type
.
get
,
callable as get(t,s)
and with return type type
or a (possibly const) reference to type
.
Header: boost/asio/associated_cancellation_slot.hpp
Convenience header: boost/asio.hpp