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future.hpp
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future.hpp
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namespace std {
enum class future_errc {
broken_promise,
future_already_retrieved,
promise_already_satisfied,
no_state
};
enum class launch : @@ {
async = @@,
deferred = @@,
@@
};
enum class future_status {
ready,
timeout,
deferred
};
template <> struct is_error_code_enum<future_errc> : public true_type { };
error_code make_error_code(future_errc e) noexcept;
error_condition make_error_condition(future_errc e) noexcept;
const error_category& future_category() noexcept;
class future_error;
template <class R> class promise;
template <class R> class promise<R&>;
template <> class promise<void>;
template <class R>
void swap(promise<R>& x, promise<R>& y) noexcept;
template <class R, class Alloc>
struct uses_allocator<promise<R>, Alloc>;
template <class R> class future;
template <class R> class future<R&>;
template <> class future<void>;
template <class R> class shared_future;
template <class R> class shared_future<R&>;
template <> class shared_future<void>;
template <class> class packaged_task; // undefined
template <class R, class... ArgTypes>
class packaged_task<R(ArgTypes...)>;
template <class R>
void swap(packaged_task<R(ArgTypes...)>&, packaged_task<R(ArgTypes...)>&) noexcept;
template <class R, class Alloc>
struct uses_allocator<packaged_task<R>, Alloc>;
template <class F, class... Args>
future<typename result_of<F(Args...)>::type>
async(F&& f, Args&&... args);
template <class F, class... Args>
future<typename result_of<F(Args...)>::type>
async(launch policy, F&& f, Args&&... args);
}