org.mmtk.utility

Class Constants

java.lang.Object

org.mmtk.utility.Constants

public final class Constants
extends Object

MMTk follows the pattern set by Jikes RVM for defining sizes of primitive types thus:

 static final int LOG_BYTES_IN_INT = 2;
 static final int BYTES_IN_INT = 1<<LOG_BYTES_IN_INT;
 static final int LOG_BITS_IN_INT = LOG_BITS_IN_BYTE + LOG_BYTES_IN_INT;
 static final int BITS_IN_INT = 1<<LOG_BITS_IN_INT;
 

Field Summary

Fields

Modifier and Type	Field and Description
static int	ALIGNMENT_VALUE The VM will add at most this value minus BYTES_IN_INT bytes of padding to the front of an object that it places in a region of memory.
static int	ARRAY_ELEMENT
static int	BITS_IN_ADDRESS
static int	BITS_IN_BYTE
static int	BITS_IN_CHAR
static int	BITS_IN_INT
static int	BITS_IN_PAGE
static int	BITS_IN_SHORT
static int	BITS_IN_WORD
static int	BYTES_IN_ADDRESS
static int	BYTES_IN_BYTE
static int	BYTES_IN_CHAR
static int	BYTES_IN_INT
static int	BYTES_IN_KBYTE
static int	BYTES_IN_MBYTE
static int	BYTES_IN_PAGE
static int	BYTES_IN_SHORT
static int	BYTES_IN_WORD
static int	CARD_MASK
static int	CARD_META_PAGES_PER_REGION
static int	INSTANCE_FIELD
static int	LOG_BITS_IN_ADDRESS
static byte	LOG_BITS_IN_BYTE
static byte	LOG_BITS_IN_CHAR
static byte	LOG_BITS_IN_INT
static int	LOG_BITS_IN_PAGE
static byte	LOG_BITS_IN_SHORT
static int	LOG_BITS_IN_WORD
static byte	LOG_BYTES_IN_ADDRESS
static byte	LOG_BYTES_IN_ADDRESS_SPACE
static byte	LOG_BYTES_IN_BYTE
static byte	LOG_BYTES_IN_CHAR
static byte	LOG_BYTES_IN_INT
static byte	LOG_BYTES_IN_KBYTE
static byte	LOG_BYTES_IN_MBYTE
static byte	LOG_BYTES_IN_PAGE
static byte	LOG_BYTES_IN_SHORT
static byte	LOG_BYTES_IN_WORD
static int	LOG_CARD_BYTES
static int	LOG_CARD_GRAIN
static int	LOG_CARD_META_BYTES
static int	LOG_CARD_META_PAGES
static int	LOG_CARD_META_SIZE
static int	LOG_CARD_UNITS
static byte	LOG_MIN_ALIGNMENT This value specifies the minimum allocation alignment requirement of the VM.
static int	MAX_ALIGNMENT The maximum alignment request the vm will make.
static int	MAX_BYTES_PADDING The VM will add at most this value minus BYTES_IN_INT bytes of padding to the front of an object that it places in a region of memory.
static int	MAX_INT
static int	MIN_ALIGNMENT
static int	MIN_INT
static boolean	SUPPORT_CARD_SCANNING

Constructor Summary

Constructors

Constructor and Description
Constants()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE_FIELD

public static final int INSTANCE_FIELD

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Constant Field Values

ARRAY_ELEMENT

public static final int ARRAY_ELEMENT

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Constant Field Values

LOG_BYTES_IN_BYTE

public static final byte LOG_BYTES_IN_BYTE

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BYTES_IN_BYTE

public static final int BYTES_IN_BYTE

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LOG_BITS_IN_BYTE

public static final byte LOG_BITS_IN_BYTE

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BITS_IN_BYTE

public static final int BITS_IN_BYTE

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LOG_BYTES_IN_MBYTE

public static final byte LOG_BYTES_IN_MBYTE

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BYTES_IN_MBYTE

public static final int BYTES_IN_MBYTE

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LOG_BYTES_IN_KBYTE

public static final byte LOG_BYTES_IN_KBYTE

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BYTES_IN_KBYTE

public static final int BYTES_IN_KBYTE

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SUPPORT_CARD_SCANNING

public static final boolean SUPPORT_CARD_SCANNING

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LOG_CARD_META_SIZE

public static final int LOG_CARD_META_SIZE

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LOG_CARD_UNITS

public static final int LOG_CARD_UNITS

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LOG_CARD_GRAIN

public static final int LOG_CARD_GRAIN

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LOG_CARD_BYTES

public static final int LOG_CARD_BYTES

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LOG_CARD_META_BYTES

public static final int LOG_CARD_META_BYTES

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LOG_CARD_META_PAGES

public static final int LOG_CARD_META_PAGES

CARD_META_PAGES_PER_REGION

public static final int CARD_META_PAGES_PER_REGION

CARD_MASK

public static final int CARD_MASK

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Constant Field Values

LOG_BYTES_IN_CHAR

public static final byte LOG_BYTES_IN_CHAR

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BYTES_IN_CHAR

public static final int BYTES_IN_CHAR

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LOG_BITS_IN_CHAR

public static final byte LOG_BITS_IN_CHAR

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BITS_IN_CHAR

public static final int BITS_IN_CHAR

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LOG_BYTES_IN_SHORT

public static final byte LOG_BYTES_IN_SHORT

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BYTES_IN_SHORT

public static final int BYTES_IN_SHORT

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LOG_BITS_IN_SHORT

public static final byte LOG_BITS_IN_SHORT

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BITS_IN_SHORT

public static final int BITS_IN_SHORT

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LOG_BYTES_IN_INT

public static final byte LOG_BYTES_IN_INT

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BYTES_IN_INT

public static final int BYTES_IN_INT

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LOG_BITS_IN_INT

public static final byte LOG_BITS_IN_INT

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BITS_IN_INT

public static final int BITS_IN_INT

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Constant Field Values

MAX_INT

public static final int MAX_INT

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Constant Field Values

MIN_INT

public static final int MIN_INT

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Constant Field Values

LOG_BYTES_IN_ADDRESS

public static final byte LOG_BYTES_IN_ADDRESS

BYTES_IN_ADDRESS

public static final int BYTES_IN_ADDRESS

LOG_BITS_IN_ADDRESS

public static final int LOG_BITS_IN_ADDRESS

BITS_IN_ADDRESS

public static final int BITS_IN_ADDRESS

LOG_BYTES_IN_WORD

public static final byte LOG_BYTES_IN_WORD

BYTES_IN_WORD

public static final int BYTES_IN_WORD

LOG_BITS_IN_WORD

public static final int LOG_BITS_IN_WORD

BITS_IN_WORD

public static final int BITS_IN_WORD

LOG_BYTES_IN_PAGE

public static final byte LOG_BYTES_IN_PAGE

BYTES_IN_PAGE

public static final int BYTES_IN_PAGE

LOG_BITS_IN_PAGE

public static final int LOG_BITS_IN_PAGE

BITS_IN_PAGE

public static final int BITS_IN_PAGE

LOG_BYTES_IN_ADDRESS_SPACE

public static final byte LOG_BYTES_IN_ADDRESS_SPACE

LOG_MIN_ALIGNMENT

public static final byte LOG_MIN_ALIGNMENT

This value specifies the minimum allocation alignment requirement of the VM. When making allocation requests, both align and offset must be multiples of MIN_ALIGNMENT. This value is required to be a power of 2.

MIN_ALIGNMENT

public static final int MIN_ALIGNMENT

MAX_ALIGNMENT

public static final int MAX_ALIGNMENT

The maximum alignment request the vm will make. This must be a power of two multiple of the minimum alignment.

MAX_BYTES_PADDING

public static final int MAX_BYTES_PADDING

The VM will add at most this value minus BYTES_IN_INT bytes of padding to the front of an object that it places in a region of memory. This value must be a power of 2.

ALIGNMENT_VALUE

public static final int ALIGNMENT_VALUE

The VM will add at most this value minus BYTES_IN_INT bytes of padding to the front of an object that it places in a region of memory. This value must be a power of 2.

Constructor Detail

Constants

public Constants()