bool owns_lock() const;

template< class Lock > void wait( Lock& lock );

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

bool try_lock();

void unlock_shared();

shared_timed_mutex(); (1)

void unlock();

std::future<R> get_future();

void swap( thread &lhs, thread &rhs );

template< class Rep, class Period > bool try_lock_shared_for(