iitb.con.util
Interface FreeSpaceList

All Known Implementing Classes:

ArrayFreeSpaceList

public interface FreeSpaceList

FreeSpaceList is the list which maintains the information about the free blocks in a file.

Method Summary

void	close() Closes the free space list file
void	commit() Commits the changes to the free space list file
boolean	freeTheBlock(long location, long size) Frees the specified block in the file
long	getFreeBlock(long size) Returns the free block location

Method Detail

close

void close()
           throws java.io.IOException

Closes the free space list file

Throws:

java.io.IOException - if file operation fails

commit

void commit()
            throws java.io.IOException

Commits the changes to the free space list file

Throws:

java.io.IOException - if file operation fails

freeTheBlock

boolean freeTheBlock(long location,
                     long size)

Frees the specified block in the file

Parameters:

location - block location

size - block size

Returns:

true on success

getFreeBlock

long getFreeBlock(long size)

Returns the free block location

Parameters:

size - request block size

Returns:

free block location