NamedLockSupport for given name, this method must never
return null.NamedLock.ReentrantReadWriteLocks.Semaphores.NamedLocks.NamedLockFactory implementations providing reference counting.NamedLock implementations providing reference counting.ReadWriteLock instances.NamedLock.lockShared(long, TimeUnit) or NamedLock.lockExclusively(long, TimeUnit).Copyright © 2010–2021 The Apache Software Foundation. All rights reserved.