com.sun.squawk.flash
Class NorFlashMemoryHeap

java.lang.Object
  com.sun.squawk.flash.NorFlashMemoryHeap

All Implemented Interfaces:

INorFlashMemoryHeap

public class NorFlashMemoryHeap
extends Object
implements INorFlashMemoryHeap

Field Summary

static byte[]	BLOCK_FOOTER
static int	BLOCK_HEADER_SIZE
protected INorFlashSectorState	currentSectorState
static byte	ERASED_VALUE
static byte	ERASED_VALUE_XOR
protected int	erasedSequenceCurrentValue
protected boolean	hasScannedBlocks
protected INorFlashSectorStateList	inUseSectorStateList
protected INorFlashSectorState[]	sectorStates
protected INorFlashSectorStateList	toBeErasedSectorStateList

Constructor Summary

protected	NorFlashMemoryHeap()
	NorFlashMemoryHeap(INorFlashSectorState[] sectorStates)
	NorFlashMemoryHeap(int purpose)

Method Summary

Address	allocateAndWriteBlock(byte[] bytes, int offset, int length, INorFlashMemoryHeapScanner scanner)
void	forceEraseAll()
void	freeBlockAt(Address address)
IMemoryHeapBlock	getBlockAt(Address address)
protected boolean	getBlockAt(IMemoryHeapBlock block, INorFlashSectorState sectorState, int offset)
long	getErasedSequenceCurrentValue()
static Vector	getNorFlashSectors(int purpose)
INorFlashSectorState	getSectorContaining(Address address)
int	getSizeAvailable()
int	incrementErasedSequence()
protected void	init(INorFlashSectorState[] sectorStates)
protected void	makeRoomToWrite(int entrySize, INorFlashMemoryHeapScanner scanner)
void	scanBlocks(INorFlashMemoryHeapScanner scanner) It is guaranteed that the order that blocks were allocated in, is the order in which they will be iterated.
protected Address	writeBlock(IMemoryHeapBlock block, INorFlashMemoryHeapScanner scanner, Address oldAddress)

Methods inherited from class java.lang.Object

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

Field Detail

BLOCK_FOOTER

public static final byte[] BLOCK_FOOTER

BLOCK_HEADER_SIZE

public static final int BLOCK_HEADER_SIZE

See Also:

Constant Field Values

ERASED_VALUE

public static final byte ERASED_VALUE

See Also:

Constant Field Values

ERASED_VALUE_XOR

public static final byte ERASED_VALUE_XOR

See Also:

Constant Field Values

currentSectorState

protected INorFlashSectorState currentSectorState

erasedSequenceCurrentValue

protected int erasedSequenceCurrentValue

hasScannedBlocks

protected boolean hasScannedBlocks

inUseSectorStateList

protected INorFlashSectorStateList inUseSectorStateList

sectorStates

protected INorFlashSectorState[] sectorStates

toBeErasedSectorStateList

protected INorFlashSectorStateList toBeErasedSectorStateList

Constructor Detail

NorFlashMemoryHeap

protected NorFlashMemoryHeap()

NorFlashMemoryHeap

public NorFlashMemoryHeap(int purpose)

Parameters:

purpose - One of INorFlashMemorySector.USER_PURPOSED

Throws:

IOException

NorFlashMemoryHeap

public NorFlashMemoryHeap(INorFlashSectorState[] sectorStates)

Method Detail

allocateAndWriteBlock

public Address allocateAndWriteBlock(byte[] bytes,
                                     int offset,
                                     int length,
                                     INorFlashMemoryHeapScanner scanner)
                              throws RecordStoreException

Specified by:

allocateAndWriteBlock in interface INorFlashMemoryHeap

Throws:

RecordStoreException

forceEraseAll

public void forceEraseAll()

Specified by:

forceEraseAll in interface INorFlashMemoryHeap

freeBlockAt

public void freeBlockAt(Address address)
                 throws RecordStoreException

Specified by:

freeBlockAt in interface INorFlashMemoryHeap

Throws:

RecordStoreException

getBlockAt

public IMemoryHeapBlock getBlockAt(Address address)
                            throws RecordStoreException

Specified by:

getBlockAt in interface INorFlashMemoryHeap

Throws:

RecordStoreException

getBlockAt

protected boolean getBlockAt(IMemoryHeapBlock block,
                             INorFlashSectorState sectorState,
                             int offset)
                      throws RecordStoreException

Parameters:

block -

sectorState -

offset -

Returns:

boolean true if there was a block at that address, false if not

Throws:

RecordStoreException

getErasedSequenceCurrentValue

public long getErasedSequenceCurrentValue()

Specified by:

getErasedSequenceCurrentValue in interface INorFlashMemoryHeap

getNorFlashSectors

public static Vector getNorFlashSectors(int purpose)

Returns:

SquawkVector

getSectorContaining

public INorFlashSectorState getSectorContaining(Address address)

getSizeAvailable

public int getSizeAvailable()
                     throws RecordStoreException

Specified by:

getSizeAvailable in interface INorFlashMemoryHeap

Throws:

RecordStoreException

incrementErasedSequence

public int incrementErasedSequence()

init

protected void init(INorFlashSectorState[] sectorStates)

makeRoomToWrite

protected void makeRoomToWrite(int entrySize,
                               INorFlashMemoryHeapScanner scanner)
                        throws RecordStoreException

Throws:

RecordStoreException

scanBlocks

public void scanBlocks(INorFlashMemoryHeapScanner scanner)
                throws RecordStoreException

It is guaranteed that the order that blocks were allocated in, is the order in which they will be iterated.

Specified by:

scanBlocks in interface INorFlashMemoryHeap

Parameters:

scanner -

Throws:

RecordStoreException

writeBlock

protected Address writeBlock(IMemoryHeapBlock block,
                             INorFlashMemoryHeapScanner scanner,
                             Address oldAddress)
                      throws RecordStoreException

Throws:

RecordStoreException