[stoptoken.general]

The class stop_token models the concept stoppable_token .

It shares ownership of its stop state, if any, with its associated stop_source object ([stopsource]) and any stop_token objects to which it compares equal.

namespace std { class stop_token { public: template<class CallbackFn> using callback_type = stop_callback<CallbackFn>; stop_token() noexcept = default; // [stoptoken.mem], member functions void swap(stop_token&) noexcept; bool stop_requested() const noexcept; bool stop_possible() const noexcept; bool operator==(const stop_token& rhs) noexcept = default; private: shared_ptr<unspecified> stop-state; // exposition only }; }

stop-state refers to the stop_token's associated stop state.

A stop_token object is disengaged when stop-state is empty.

33 Concurrency support library [thread]

33.3 Stop tokens [thread.stoptoken]

33.3.4 Class stop_token [stoptoken]

33.3.4.1 General [stoptoken.general]