Inherited from execution_context.
Obtain the service object corresponding to the given type.
template< typename Service> friend Service & use_service( execution_context & e);
This function is used to locate a service object that corresponds to
the given service type. If there is no existing implementation of the
service, then the execution_context
will create
a new instance of the service.
The execution_context
object
that owns the service.
The service interface implementing the specified service type. Ownership of the service interface is not transferred to the caller.