lockFound := false
		for _, uid := range dm.readLocks {
			if isLocked(uid) {
				lockFound = true
				break
			}
		}
		if !lockFound {
			panic("Trying to RUnlock() while no RLock() is active")
		}

		// Copy write locks to stack array
		copy(locks, dm.readLocks)
	}

	// Tolerance is not set, defaults to half of the locker clients.

    ReentrantReadWriteLock readWriteLockC = factory.newReentrantReadWriteLock("ReadWriteC");
    readLockA = readWriteLockA.readLock();
    readLockB = readWriteLockB.readLock();
    readLockC = readWriteLockC.readLock();
    writeLockA = readWriteLockA.writeLock();
    writeLockB = readWriteLockB.writeLock();
    writeLockC = readWriteLockC.writeLock();

    ReentrantReadWriteLock readWriteLockC = factory.newReentrantReadWriteLock("ReadWriteC");
    readLockA = readWriteLockA.readLock();
    readLockB = readWriteLockB.readLock();
    readLockC = readWriteLockC.readLock();
    writeLockA = readWriteLockA.writeLock();
    writeLockB = readWriteLockB.writeLock();
    writeLockC = readWriteLockC.writeLock();

      super(fair);
      this.readLock = new CycleDetectingReentrantReadLock(this);
      this.writeLock = new CycleDetectingReentrantWriteLock(this);
      this.lockGraphNode = Preconditions.checkNotNull(lockGraphNode);
    }

    ///// Overridden ReentrantReadWriteLock methods. /////

    @Override
    public ReadLock readLock() {
      return readLock;
    }

    @Override

	lockSource := getSource(2)
	start := UTCNow()
	const readLock = false
	success := make([]int, len(li.paths))
	for i, path := range li.paths {
		if !li.ns.lock(ctx, li.volume, path, lockSource, li.opsID, readLock, timeout.Timeout()) {
			timeout.LogFailure()
			for si, sint := range success {
				if sint == 1 {
					li.ns.unlock(li.volume, li.paths[si], readLock)
				}
			}
			if errors.Is(ctx.Err(), context.Canceled) {

		ReadSectors:  currentStats.ReadSectors - initialStats.ReadSectors,
		WriteSectors: currentStats.WriteSectors - initialStats.WriteSectors,
		ReadTicks:    currentStats.ReadTicks - initialStats.ReadTicks,
		WriteTicks:   currentStats.WriteTicks - initialStats.WriteTicks,
		TotalTicks:   currentStats.TotalTicks - initialStats.TotalTicks,
	}
}

			expectedIOStats: IOStats{
				ReadIOs:        1432553,
				ReadMerges:     420084,
				ReadSectors:    66247626,
				ReadTicks:      2398227,
				WriteIOs:       7077314,
				WriteMerges:    8720147,
				WriteSectors:   157049224,
				WriteTicks:     7469810,
				CurrentIOs:     0,
				TotalTicks:     7580552,
				ReqTicks:       9869354,

    Object key = new Object();
    Lock readLock = striped.get(key).readLock();
    WeakReference<Object> garbage = new WeakReference<>(new Object());
    GcFinalization.awaitClear(garbage);
    Lock writeLock = striped.get(key).writeLock();
    readLock.lock();
    assertFalse(writeLock.tryLock());
    readLock.unlock();
  }

    Object key = new Object();
    Lock readLock = striped.get(key).readLock();
    WeakReference<Object> garbage = new WeakReference<>(new Object());
    GcFinalization.awaitClear(garbage);
    Lock writeLock = striped.get(key).writeLock();
    readLock.lock();
    assertFalse(writeLock.tryLock());
    readLock.unlock();
  }

	Name       string
	Rotational *bool
	NRRequests uint64
}

// IOStats contains stats of a single drive
type IOStats struct {
	ReadIOs        uint64
	ReadMerges     uint64
	ReadSectors    uint64
	ReadTicks      uint64
	WriteIOs       uint64
	WriteMerges    uint64
	WriteSectors   uint64
	WriteTicks     uint64
	CurrentIOs     uint64
	TotalTicks     uint64
	ReqTicks       uint64
	DiscardIOs     uint64