libcxx/src/atomic.cpp

141     auto const __entry = __libcpp_contention_state(__location);
143     __cxx_atomic_fetch_add(&__entry->__platform_state, __cxx_contention_t(1), memory_order_release);
144     __libcpp_contention_notify(&__entry->__contention_state,
145                                &__entry->__platform_state,
157     auto const __entry = __libcpp_contention_state(__location);
158     return __libcpp_contention_monitor_for_wait(&__entry->__contention_state, &__entry->__platform_state);
163     auto const __entry = __libcpp_contention_state(__location);
164     __libcpp_contention_wait(&__entry->__contention_state, &__entry->__platform_state, __old_value);