org.mmtk.policy.immix

Class Chunk

java.lang.Object

org.mmtk.policy.immix.Chunk

public class Chunk
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static int	BLOCK_DEFRAG_STATE_TABLE_OFFSET
private static int	BLOCK_MASK
(package private) static int	BLOCK_STATE_TABLE_OFFSET
static int	FIRST_USABLE_BLOCK_INDEX
private static int	HIGHWATER_BYTES
(package private) static int	HIGHWATER_OFFSET
(package private) static int	LINE_MARK_TABLE_OFFSET
private static int	LOG_BYTES_IN_HIGHWATER_ENTRY
private static int	LOG_BYTES_IN_MAP_ENTRY
private static int	MAP_BYTES
(package private) static int	MAP_OFFSET
(package private) static int	METADATA_BYTES_PER_CHUNK
(package private) static int	ROUNDED_METADATA_BYTES_PER_CHUNK
(package private) static int	ROUNDED_METADATA_PAGES_PER_CHUNK

Constructor Summary

Constructors

Constructor and Description
Chunk()

Method Summary

Modifier and Type	Method and Description
static Address	align(Address ptr)
private static void	checkMetaDataCleared(Address chunk, Address value)
(package private) static void	clearMetaData(Address chunk)
(package private) static int	getByteOffset(Address ptr)
(package private) static Address	getFirstUsableBlock(Address chunk)
static Address	getHighWater(Address chunk)
(package private) static int	getMap(Address chunk)
(package private) static int	getRequiredMetaDataPages()
(package private) static boolean	isAligned(Address ptr)
(package private) static void	resetLineMarksAndDefragStateTable(Address chunk, short threshold)
private static void	setHighWater(Address chunk, Address value)
(package private) static void	setMap(Address chunk, int value)
(package private) static void	sweep(Address chunk, Address end, ImmixSpace space, int[] markHistogram, byte markValue, boolean resetMarks)
(package private) static void	updateHighWater(Address value)

Methods inherited from class java.lang.Object

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

Field Detail

LOG_BYTES_IN_HIGHWATER_ENTRY

private static final int LOG_BYTES_IN_HIGHWATER_ENTRY

HIGHWATER_BYTES

private static final int HIGHWATER_BYTES

LOG_BYTES_IN_MAP_ENTRY

private static final int LOG_BYTES_IN_MAP_ENTRY

See Also:

Constant Field Values

MAP_BYTES

private static final int MAP_BYTES

See Also:

Constant Field Values

LINE_MARK_TABLE_OFFSET

static final int LINE_MARK_TABLE_OFFSET

See Also:

Constant Field Values

BLOCK_STATE_TABLE_OFFSET

static final int BLOCK_STATE_TABLE_OFFSET

See Also:

Constant Field Values

BLOCK_DEFRAG_STATE_TABLE_OFFSET

static final int BLOCK_DEFRAG_STATE_TABLE_OFFSET

HIGHWATER_OFFSET

static final int HIGHWATER_OFFSET

MAP_OFFSET

static final int MAP_OFFSET

METADATA_BYTES_PER_CHUNK

static final int METADATA_BYTES_PER_CHUNK

BLOCK_MASK

private static final int BLOCK_MASK

ROUNDED_METADATA_BYTES_PER_CHUNK

static final int ROUNDED_METADATA_BYTES_PER_CHUNK

ROUNDED_METADATA_PAGES_PER_CHUNK

static final int ROUNDED_METADATA_PAGES_PER_CHUNK

FIRST_USABLE_BLOCK_INDEX

public static final int FIRST_USABLE_BLOCK_INDEX

Constructor Detail

Chunk

public Chunk()

Method Detail

align

public static Address align(Address ptr)

isAligned

static boolean isAligned(Address ptr)

getByteOffset

static int getByteOffset(Address ptr)

getRequiredMetaDataPages

static int getRequiredMetaDataPages()

Returns:

the number of pages of metadata required per chunk

sweep

static void sweep(Address chunk,
                  Address end,
                  ImmixSpace space,
                  int[] markHistogram,
                  byte markValue,
                  boolean resetMarks)

clearMetaData

static void clearMetaData(Address chunk)

checkMetaDataCleared

private static void checkMetaDataCleared(Address chunk,
                                         Address value)

updateHighWater

static void updateHighWater(Address value)

setHighWater

private static void setHighWater(Address chunk,
                                 Address value)

getHighWater

public static Address getHighWater(Address chunk)

setMap

static void setMap(Address chunk,
                   int value)

getMap

static int getMap(Address chunk)

resetLineMarksAndDefragStateTable

static void resetLineMarksAndDefragStateTable(Address chunk,
                                              short threshold)

getFirstUsableBlock

static Address getFirstUsableBlock(Address chunk)