org.rocksdb

Class ComparatorOptions

java.lang.Object

org.rocksdb.AbstractNativeReference

org.rocksdb.AbstractImmutableNativeReference

org.rocksdb.RocksObject

org.rocksdb.ComparatorOptions

All Implemented Interfaces:

java.lang.AutoCloseable

public class ComparatorOptions
extends RocksObject

This class controls the behaviour of Java implementations of AbstractComparator Note that dispose() must be called before a ComparatorOptions instance becomes out-of-scope to release the allocated memory in C++.

Field Summary

Fields inherited from class org.rocksdb.RocksObject

nativeHandle_

Constructor Summary

Constructors

Constructor and Description
ComparatorOptions()

Method Summary

Modifier and Type	Method and Description
protected void	disposeInternal(long handle)
ComparatorOptions	setUseAdaptiveMutex(boolean useAdaptiveMutex) Use adaptive mutex, which spins in the user space before resorting to kernel.
boolean	useAdaptiveMutex() Use adaptive mutex, which spins in the user space before resorting to kernel.

Methods inherited from class org.rocksdb.RocksObject

disposeInternal

Methods inherited from class org.rocksdb.AbstractImmutableNativeReference

close, disOwnNativeHandle, isOwningHandle

Methods inherited from class org.rocksdb.AbstractNativeReference

dispose, finalize

Methods inherited from class java.lang.Object

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

Constructor Detail

ComparatorOptions

public ComparatorOptions()

Method Detail

useAdaptiveMutex

public boolean useAdaptiveMutex()

Use adaptive mutex, which spins in the user space before resorting to kernel. This could reduce context switch when the mutex is not heavily contended. However, if the mutex is hot, we could end up wasting spin time. Default: false

Returns:

true if adaptive mutex is used.

setUseAdaptiveMutex

public ComparatorOptions setUseAdaptiveMutex(boolean useAdaptiveMutex)

Use adaptive mutex, which spins in the user space before resorting to kernel. This could reduce context switch when the mutex is not heavily contended. However, if the mutex is hot, we could end up wasting spin time. Default: false

Parameters:

useAdaptiveMutex - true if adaptive mutex is used.

Returns:

the reference to the current comparator options.

disposeInternal

protected final void disposeInternal(long handle)

Specified by:

disposeInternal in class RocksObject