NamedLockSupport
for given name
, this method must never
return null
.NamedLock
.ReentrantReadWriteLock
s.Semaphore
s.NamedLock
s.NamedLockFactory
implementations providing reference counting.NamedLock
implementations providing reference counting.ReadWriteLock
instances.NamedLock.lockShared(long, TimeUnit)
or NamedLock.lockExclusively(long, TimeUnit)
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