25     __libcpp_mutex_destroy(&__m_);  in ~mutex()
31     int ec = __libcpp_mutex_lock(&__m_);  in lock()
39     return __libcpp_mutex_trylock(&__m_);  in try_lock()
45     int ec = __libcpp_mutex_unlock(&__m_);  in unlock()
54     int ec = __libcpp_recursive_mutex_init(&__m_);  in recursive_mutex()
61     int e = __libcpp_recursive_mutex_destroy(&__m_);  in ~recursive_mutex()
69     int ec = __libcpp_recursive_mutex_lock(&__m_);  in lock()
77     int e = __libcpp_recursive_mutex_unlock(&__m_);  in unlock()
85     return __libcpp_recursive_mutex_trylock(&__m_);  in try_lock()
97     lock_guard<mutex> _(__m_);  in ~timed_mutex()
103     unique_lock<mutex> lk(__m_);  in lock()
112     unique_lock<mutex> lk(__m_, try_to_lock);  in try_lock()
124     lock_guard<mutex> _(__m_);  in unlock()
139     lock_guard<mutex> _(__m_);  in ~recursive_timed_mutex()
146     unique_lock<mutex> lk(__m_);  in lock()
164     unique_lock<mutex> lk(__m_, try_to_lock);  in try_lock()
179     unique_lock<mutex> lk(__m_);  in unlock()