FreeSpaceTree

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

Methods
long	allocate(int length) Allocate a number of blocks and mark them as used.
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
void	clear() Reset the list.
void	clear() Reset the list.
void	free(long pos, int length) Mark the space as free.
void	free(long pos, int length) Mark the space as free. Parameters: pos - the position in bytes length - the number of bytes
void	markUsed(long pos, int length) Mark the space as in use.
void	markUsed(long pos, int length) Mark the space as in use. Parameters: pos - the position in bytes length - the number of bytes
String	toString()
String	toString()