001/*
002 *  This file is part of the Jikes RVM project (http://jikesrvm.org).
003 *
004 *  This file is licensed to You under the Eclipse Public License (EPL);
005 *  You may not use this file except in compliance with the License. You
006 *  may obtain a copy of the License at
007 *
008 *      http://www.opensource.org/licenses/eclipse-1.0.php
009 *
010 *  See the COPYRIGHT.txt file distributed with this work for information
011 *  regarding copyright ownership.
012 */
013
014package org.mmtk.vm;
015
016import org.mmtk.policy.Space;
017import org.vmmagic.pragma.Uninterruptible;
018import org.vmmagic.unboxed.Address;
019import org.vmmagic.unboxed.Extent;
020
021/**
022 * Event generation interface for MMTk.
023 */
024@Uninterruptible
025public abstract class MMTk_Events {
026  public abstract void tracePageAcquired(Space space, Address startAddress, int numPages);
027
028  public abstract void tracePageReleased(Space space, Address startAddress, int numPages);
029
030  public abstract void heapSizeChanged(Extent heapSize);
031
032}