org.apache.beam.sdk.util

Class NoopLock

java.lang.Object

org.apache.beam.sdk.util.NoopLock

All Implemented Interfaces:

java.io.Serializable, java.util.concurrent.locks.Lock

public class NoopLock
extends java.lang.Object
implements java.util.concurrent.locks.Lock, java.io.Serializable

A lock which can always be acquired. It should not be used when a proper lock is required, but it is useful as a performance optimization when locking is not necessary but the code paths have to be shared between the locking and the non-locking variant.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
static NoopLock	get()
void	lock()
void	lockInterruptibly()
java.util.concurrent.locks.Condition	newCondition()
boolean	tryLock()
boolean	tryLock(long time, java.util.concurrent.TimeUnit unit)
void	unlock()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

get

public static NoopLock get()

lock

public void lock()

Specified by:

lock in interface java.util.concurrent.locks.Lock

lockInterruptibly

public void lockInterruptibly()

Specified by:

lockInterruptibly in interface java.util.concurrent.locks.Lock

tryLock

public boolean tryLock()

Specified by:

tryLock in interface java.util.concurrent.locks.Lock

tryLock

public boolean tryLock(long time,
                       @Nonnull
                       java.util.concurrent.TimeUnit unit)

Specified by:

tryLock in interface java.util.concurrent.locks.Lock

unlock

public void unlock()

Specified by:

unlock in interface java.util.concurrent.locks.Lock

newCondition

@Nonnull
public java.util.concurrent.locks.Condition newCondition()

Specified by:

newCondition in interface java.util.concurrent.locks.Lock