[stoptoken.never] (original) (raw)

It provides a stop token interface, but also provides static information that a stop is never possible nor requested.

namespace std { class never_stop_token { struct callback-type { explicit callback-type(never_stop_token, auto&&) noexcept {} };public: template<class> using callback_type = callback-type;static constexpr bool stop_requested() noexcept { return false; } static constexpr bool stop_possible() noexcept { return false; } bool operator==(const never_stop_token&) const = default;};}