545     , state_(0), num_pending_readers_(0), num_pending_writers_(0)  in ReaderWriterMutex()
556   CHECK_EQ(state_.load(std::memory_order_relaxed), 0);  in ~ReaderWriterMutex()
578     int32_t cur_state = state_.load(std::memory_order_relaxed);  in ExclusiveLock()
581       done = state_.CompareAndSetWeakAcquire(0 /* cur_state*/, -1 /* new state */);  in ExclusiveLock()
589       if (futex(state_.Address(), FUTEX_WAIT_PRIVATE, cur_state, nullptr, nullptr, 0) != 0) {  in ExclusiveLock()
599   DCHECK_EQ(state_.load(std::memory_order_relaxed), -1);  in ExclusiveLock()
617     int32_t cur_state = state_.load(std::memory_order_relaxed);  in ExclusiveUnlock()
625       done = state_.CompareAndSetWeakSequentiallyConsistent(-1 /* cur_state*/, 0 /* new state */);  in ExclusiveUnlock()
630           futex(state_.Address(), FUTEX_WAKE_PRIVATE, kWakeAll, nullptr, nullptr, 0);  in ExclusiveUnlock()
651     int32_t cur_state = state_.load(std::memory_order_relaxed);  in ExclusiveLockWithTimeout()
654       done = state_.CompareAndSetWeakAcquire(0 /* cur_state */, -1 /* new state */);  in ExclusiveLockWithTimeout()
668       if (futex(state_.Address(), FUTEX_WAIT_PRIVATE, cur_state, &rel_ts, nullptr, 0) != 0) {  in ExclusiveLockWithTimeout()
709   if (futex(state_.Address(), FUTEX_WAIT_PRIVATE, cur_state, nullptr, nullptr, 0) != 0) {  in HandleSharedLockContention()
723     int32_t cur_state = state_.load(std::memory_order_relaxed);  in SharedTryLock()
726       done = state_.CompareAndSetWeakAcquire(cur_state, cur_state + 1);  in SharedTryLock()
763       << " state=" << state_.load(std::memory_order_seq_cst)  in Dump()
787     futex(state_.Address(), FUTEX_WAKE_PRIVATE, kWakeAll, nullptr, nullptr, 0);  in WakeupToRespondToEmptyCheckpoint()