[stopcallback.cons] (original) (raw)

32 Concurrency support library [thread]

32.3 Stop tokens [thread.stoptoken]

32.3.6 Class template stop_callback [stopcallback]

32.3.6.2 Constructors and destructor [stopcallback.cons]

template<class Initializer> explicit stop_callback(const stop_token& st, Initializer&& init) noexcept(is_nothrow_constructible_v<CallbackFn, Initializer>);template<class Initializer> explicit stop_callback(stop_token&& st, Initializer&& init) noexcept(is_nothrow_constructible_v<CallbackFn, Initializer>);

Constraints: CallbackFn and Initializer satisfyconstructible_from<CallbackFn, Initializer>.

Effects: Initializes callback-fn with std​::​forward<Initializer>(init)and executes a stoppable callback registration ([stoptoken.concepts]).

If a callback is registered with st's shared stop state, then *this acquires shared ownership of that stop state.

Effects: Executes a stoppable callback deregistration ([stoptoken.concepts]) and releases ownership of the stop state, if any.