Package org.apache.lucene.codecs.uniformsplit

Class RamUsageUtil

java.lang.Object

org.apache.lucene.codecs.uniformsplit.RamUsageUtil

public class RamUsageUtil
extends Object

Utility methods to estimate the RAM usage of objects. It relies on RamUsageEstimator.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Constructor Summary

Constructors

Constructor	Description
RamUsageUtil()

Method Summary

Modifier and Type	Method	Description
static long	ramBytesUsed(TermState termState)
static long	ramBytesUsed(BytesRef bytesRef)
static long	ramBytesUsed(BytesRefBuilder bytesRefBuilder)
static long	ramBytesUsedByByteArrayOfLength(int length)
static long	ramBytesUsedByHashMapOfSize(int size)
static long	ramBytesUsedByObjectArrayOfLength(int length)
static long	ramBytesUsedByUnmodifiableArrayListOfSize(int size)

Methods inherited from class java.lang.Object

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

Constructor Details

RamUsageUtil

public RamUsageUtil()

Method Details

ramBytesUsed

public static long ramBytesUsed(BytesRef bytesRef)

ramBytesUsed

public static long ramBytesUsed(BytesRefBuilder bytesRefBuilder)

ramBytesUsed

public static long ramBytesUsed(TermState termState)

ramBytesUsedByByteArrayOfLength

public static long ramBytesUsedByByteArrayOfLength(int length)

ramBytesUsedByHashMapOfSize

public static long ramBytesUsedByHashMapOfSize(int size)

ramBytesUsedByUnmodifiableArrayListOfSize

public static long ramBytesUsedByUnmodifiableArrayListOfSize(int size)

ramBytesUsedByObjectArrayOfLength

public static long ramBytesUsedByObjectArrayOfLength(int length)