org.rocksdb

Class ComparatorOptions

java.lang.Object

org.rocksdb.RocksObject

org.rocksdb.ComparatorOptions

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

Methods

Modifier and Type	Method and Description
protected void	disposeInternal() The helper function of dispose() which all subclasses of RocksObject must implement to release their associated C++ resource.
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

disOwnNativeHandle, dispose, finalize, isInitialized, isOwningNativeHandle

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 void disposeInternal()

Description copied from class: RocksObject

The helper function of dispose() which all subclasses of RocksObject must implement to release their associated C++ resource.

Specified by:

disposeInternal in class RocksObject