org.h2.test.store

Class FreeSpaceTree

java.lang.Object

org.h2.test.store.FreeSpaceTree

public class FreeSpaceTree
extends java.lang.Object

A list that maintains ranges of free space (in blocks) in a file.

Constructor Summary

Constructors

Constructor and Description
FreeSpaceTree(int firstFreeBlock, int blockSize)

Method Summary

Modifier and Type	Method and Description
long	allocate(int length) Allocate a number of blocks and mark them as used.
void	clear() Reset the list.
void	free(long pos, int length) Mark the space as free.
void	markUsed(long pos, int length) Mark the space as in use.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

FreeSpaceTree

public FreeSpaceTree(int firstFreeBlock,
                     int blockSize)

Method Detail

clear

public void clear()

Reset the list.

allocate

public long allocate(int length)

Allocate a number of blocks and mark them as used.

Parameters:

length - the number of bytes to allocate

Returns:

the start position in bytes

markUsed

public void markUsed(long pos,
                     int length)

Mark the space as in use.

Parameters:

pos - the position in bytes

length - the number of bytes

free

public void free(long pos,
                 int length)

Mark the space as free.

Parameters:

pos - the position in bytes

length - the number of bytes

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object