Package org.eclipse.mat.parser.index

Class IndexReader.LongIndexReader

java.lang.Object

org.eclipse.mat.parser.index.IndexReader.LongIndexReader

All Implemented Interfaces:

IIndexReader, IIndexReader.IOne2LongIndex

Enclosing class:

IndexReader

public static class IndexReader.LongIndexReader
extends Object
implements IIndexReader.IOne2LongIndex

Creates a int to long index reader Disk file structure:

 Page 0: ArrayLongCompressed
 Page 1: ArrayLongCompressed
 ...
 Page n: ArrayLongCompressed
 page 0 start in file (8)
 page 1 start in file (8)
 ...
 page n start in file (8)
 page n+1 start in file (8) (i.e. location of 'page 0 start in file' field)
 page size (4)
 total size (4)
 

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.mat.parser.index.IIndexReader

IIndexReader.IOne2LongIndex, IIndexReader.IOne2ManyIndex, IIndexReader.IOne2ManyObjectsIndex, IIndexReader.IOne2OneIndex, IIndexReader.IOne2SizeIndex

Constructor Summary

Constructors

Constructor	Description
LongIndexReader(File indexFile)
LongIndexReader(File indexFile, HashMapIntObject<Object> pages, int size, int pageSize, long[] pageStart)

Method Summary

Modifier and Type	Method	Description
void	close()	Close the backing file.
void	delete()	Delete the backing file.
long	get(int index)
long[]	getNext(int index, int length)
IteratorLong	iterator()
int	reverse(long value)	Find the int corresponding to the long in the index value.
void	set(int index, long value)
int	size()
void	unload()	Clear the caches.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.mat.parser.index.IIndexReader

size

Methods inherited from interface org.eclipse.mat.parser.index.IIndexReader.IOne2LongIndex

get, getNext

Constructor Details

LongIndexReader

public LongIndexReader(File indexFile,
 HashMapIntObject<Object> pages,
 int size,
 int pageSize,
 long[] pageStart)
                throws IOException

Throws:

IOException

LongIndexReader

public LongIndexReader(File indexFile)
                throws IOException

Throws:

IOException

Method Details

close

public void close()

Description copied from interface: IIndexReader

Close the backing file.

Specified by:

close in interface IIndexReader

reverse

public int reverse(long value)

Description copied from interface: IIndexReader.IOne2LongIndex

Find the int corresponding to the long in the index value. The reverse of IIndexReader.IOne2LongIndex.get(int)

Specified by:

reverse in interface IIndexReader.IOne2LongIndex

Parameters:

value - the value to look up

Returns:

the correspond int key in the index

unload

public void unload()

Description copied from interface: IIndexReader

Clear the caches. Used when the indexes are not current in use and the memory needs to be reclaimed such as when building the dominator tree.

Specified by:

unload in interface IIndexReader

delete

public void delete()

Description copied from interface: IIndexReader

Delete the backing file.

Specified by:

delete in interface IIndexReader

get

public long get(int index)

getNext

public long[] getNext(int index,
 int length)

set

public void set(int index,
 long value)

size

public int size()

iterator

public IteratorLong iterator()