harpoon.Runtime.PreciseGC
Class WriteBarrier

java.lang.Object
  harpoon.Runtime.PreciseGC.WriteBarrier

public abstract class WriteBarrier
extends Object

WriteBarrier is an abstract class that provides a dummy write-barrier for generational garbage collection.

Version:

$Id: WriteBarrier.java,v 1.3 2002/06/25 18:18:05 kkz Exp $

Author:

Karen Zee <kkz@tmi.lcs.mit.edu>

Constructor Summary

WriteBarrier()

Method Summary

static void	asc(Object o, int index, Object val, int id) dummy write barrier for ASETs
static void	clearBit(Object o) dummy method for clearing dynamic write barrier bit
static void	fsc(Object o, Field f, Object val, int id) dummy write barrier for SETs
static void	storeCheck(Object o) dummy write barrier for PSETs

Methods inherited from class java.lang.Object

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

Constructor Detail

WriteBarrier

public WriteBarrier()

Method Detail

storeCheck

public static void storeCheck(Object o)

dummy write barrier for PSETs

fsc

public static void fsc(Object o,
                       Field f,
                       Object val,
                       int id)

dummy write barrier for SETs

asc

public static void asc(Object o,
                       int index,
                       Object val,
                       int id)

dummy write barrier for ASETs

clearBit

public static void clearBit(Object o)

dummy method for clearing dynamic write barrier bit