template< class Mutex > void swap( unique_lock<Mutex>&

native_handle_type native_handle();

void make_ready_at_thread_exit( ArgTypes... args );

template< class Clock, class Duration > bool try_lock_until(

Defined in header

void swap( packaged_task& other );

Defined in header

template< class Rep, class Period > std::future_status wait_for(

bool valid() const;

Defined in header