32 Concurrency support library [thread]

32.3 Stop tokens [thread.stoptoken]

32.3.2 Header <stop_token> synopsis [thread.stoptoken.syn]

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namespace std { // [stoptoken.concepts], stop token concepts template<class CallbackFn, class Token, class Initializer = CallbackFn> concept stoppable-callback-for = see below; // exposition only template<class Token> concept stoppable_token = see below; template<class Token> concept unstoppable_token = see below; template<class Source> concept stoppable-source = see below; // exposition only // [stoptoken], class stop_token class stop_token; // [stopsource], class stop_source class stop_source; // no-shared-stop-state indicator struct nostopstate_t { explicit nostopstate_t() = default; }; inline constexpr nostopstate_t nostopstate{}; // [stopcallback], class template stop_callback template<class Callback> class stop_callback; // [stoptoken.never], class never_stop_token class never_stop_token; // [stoptoken.inplace], class inplace_stop_token class inplace_stop_token; // [stopsource.inplace], class inplace_stop_source class inplace_stop_source; // [stopcallback.inplace], class template inplace_stop_callback template<class CallbackFn> class inplace_stop_callback; template<class T, class CallbackFn> using stop_callback_for_t = T::template callback_type<CallbackFn>; }