org.eclipse.mat.collect

Class ArrayLongBig

java.lang.Object

org.eclipse.mat.collect.ArrayLongBig

public final class ArrayLongBig
extends Object

This class simplifies the handling of growing long[] in a very fast and memory efficient manner so that no slow collections must be used. However this class is only fast on big long[] and not on small ones where you collect just a couple of longs. The internal data is never copied during the process of growing. Only with toArray() the data is copied to the result long[].

Constructor Summary

Constructors

Constructor and Description
ArrayLongBig() Create an LongArray.

Method Summary

Modifier and Type	Method and Description
void	add(long element) Add long to LongArray.
void	addAll(long[] elements) Add long[] to LongArray.
long	consumption() Get memory consumption of LongArray.
long	get(int index) Get long at index from LongArray.
int	length() Get length of LongArray.
long[]	toArray() Convert LongArray to long[].

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayLongBig

public ArrayLongBig()

Create an LongArray. Memory consumption is equal to creating a new ArrayList.

Method Detail

add

public final void add(long element)

Add long to LongArray.

Parameters:

element - long which should be added

addAll

public final void addAll(long[] elements)

Add long[] to LongArray.

Parameters:

elements - long[] which should be added

get

public final long get(int index)
               throws IndexOutOfBoundsException

Get long at index from LongArray.

Parameters:

index - index of long which should be returned

Returns:

long at index

Throws:

IndexOutOfBoundsException - if the index is beyond the end.

length

public final int length()

Get length of LongArray.

Returns:

length of LongArray

consumption

public final long consumption()

Get memory consumption of LongArray.

Returns:

memory consumption of LongArray

toArray

public final long[] toArray()

Convert LongArray to long[]. This operation is the only one where the internal data is copied. It is directly copied to the long[] which is returned, so don't call this method more than once when done.

Returns:

long[] representing the LongArray