|
||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectorg.h2.mvstore.FreeSpaceBitSet
public class FreeSpaceBitSet
A free space bit set.
Constructor Summary | |
---|---|
FreeSpaceBitSet(int firstFreeBlock,
int blockSize)
Create a new free space map. |
Method Summary | |
---|---|
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. |
int |
getFillRate()
Get the fill rate of the space in percent. |
long |
getFirstFree()
Get the position of the first free space. |
boolean |
isFree(long pos,
int length)
Check whether one of the blocks is free. |
boolean |
isUsed(long pos,
int length)
Check whether one of the blocks is in use. |
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 |
---|
public FreeSpaceBitSet(int firstFreeBlock, int blockSize)
firstFreeBlock
- the first free blockblockSize
- the block sizeMethod Detail |
---|
public void clear()
public boolean isUsed(long pos, int length)
pos
- the position in byteslength
- the number of bytes
public boolean isFree(long pos, int length)
pos
- the position in byteslength
- the number of bytes
public long allocate(int length)
length
- the number of bytes to allocate
public void markUsed(long pos, int length)
pos
- the position in byteslength
- the number of bytespublic void free(long pos, int length)
pos
- the position in byteslength
- the number of bytespublic int getFillRate()
public long getFirstFree()
public java.lang.String toString()
toString
in class java.lang.Object
|
||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |