org.neo4j.concurrent

Class BinaryLatch

java.lang.Object

org.neo4j.concurrent.BinaryLatch

public class BinaryLatch
extends Object

This class is similar in many ways to a CountDownLatch(1).

The main difference is that instances of this specialized latch implementation are much quicker to allocate and construct. Each instance also takes up less memory on the heap, and enqueueing wait nodes on the latch is faster.

There are two reasons why this class is faster to construct: 1. it performs no volatile write during its construction, and 2. it does not need to allocate an internal Sync object, like CountDownLatch does.

Constructor Summary

Constructors

Constructor and Description
BinaryLatch()

Method Summary

Modifier and Type	Method and Description
void	await() Wait for the latch to be released, blocking the current thread if necessary.
void	release() Release the latch, thereby unblocking all current and future calls to await().

Methods inherited from class java.lang.Object

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

Constructor Detail

BinaryLatch

public BinaryLatch()

Method Detail

release

public void release()

Release the latch, thereby unblocking all current and future calls to await().

await

public void await()

Wait for the latch to be released, blocking the current thread if necessary.

This method returns immediately if the latch has already been released.