Java org.apache.lucene.util RamUsageEstimator fields, constructors, methods, implement or subclass

Example usage for Java org.apache.lucene.util RamUsageEstimator fields, constructors, methods, implement or subclass

Introduction

In this page you can find the methods, fields and constructors for org.apache.lucene.util RamUsageEstimator.

The text is from its open source code.

Field

int	NUM_BYTES_OBJECT_REF Number of bytes this JVM uses to represent an object reference.
int	NUM_BYTES_OBJECT_HEADER Number of bytes to represent an object header (no fields, no alignments).
int	NUM_BYTES_ARRAY_HEADER Number of bytes to represent an array header (no content, but with alignments).

Constructor

	RamUsageEstimator() No instantiation.

Method

String	humanReadableUnits(long bytes) Returns `size` in human-readable units (GB, MB, KB or bytes).
long	shallowSizeOf(Object[] arr) Returns the shallow size in bytes of the Object[] object.
long	shallowSizeOf(Object obj) Estimates a "shallow" memory usage of the given object.
long	sizeOf(Long value) Return the size of the provided Long object, returning 0 if it is cached by the JVM and its shallow size otherwise.
long	sizeOf(byte[] arr) Returns the size in bytes of the byte[] object.
long	sizeOf(boolean[] arr) Returns the size in bytes of the boolean[] object.
long	sizeOf(char[] arr) Returns the size in bytes of the char[] object.
long	sizeOf(short[] arr) Returns the size in bytes of the short[] object.
long	sizeOf(int[] arr) Returns the size in bytes of the int[] object.
long	sizeOf(float[] arr) Returns the size in bytes of the float[] object.
long	sizeOf(long[] arr) Returns the size in bytes of the long[] object.
long	sizeOf(double[] arr) Returns the size in bytes of the double[] object.
long	sizeOf(String[] arr) Returns the size in bytes of the String[] object.
long	sizeOf(Query q) Returns the size in bytes of a Query object.
long	sizeOf(Accountable accountable) Returns the size in bytes of the Accountable object, using its Accountable#ramBytesUsed() method.
long	sizeOf(String s) Returns the size in bytes of the String object.
long	sizeOf(Accountable[] accountables) Return the size of the provided array of Accountable s by summing up the shallow size of the array and the Accountable#ramBytesUsed() memory usage reported by each Accountable .