org.jikesrvm.objectmodel

Class MiscHeaderConstants

java.lang.Object

org.jikesrvm.objectmodel.MiscHeaderConstants

public final class MiscHeaderConstants
extends Object

Defines other header words not used for core Java language support of memory allocation. Typically these are extra header words used for various kinds of instrumentation or profiling.

See Also:

ObjectModel

Field Summary

Fields

Modifier and Type	Field and Description
static int	GC_TRACING_HEADER_BYTES
static int	GC_TRACING_HEADER_WORDS Support for GC Tracing; uses either 0 or 3 words of MISC HEADER
static int	NUM_BYTES_HEADER How many bytes are used by all misc header fields?

Constructor Summary

Constructors

Modifier	Constructor and Description
private	MiscHeaderConstants()

Method Summary

Methods inherited from class java.lang.Object

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

Field Detail

GC_TRACING_HEADER_WORDS

public static final int GC_TRACING_HEADER_WORDS

Support for GC Tracing; uses either 0 or 3 words of MISC HEADER

GC_TRACING_HEADER_BYTES

public static final int GC_TRACING_HEADER_BYTES

NUM_BYTES_HEADER

public static final int NUM_BYTES_HEADER

How many bytes are used by all misc header fields?

Constructor Detail

MiscHeaderConstants

private MiscHeaderConstants()