1 /* 2 * Copyright 2000-2008 Sun Microsystems, Inc. All Rights Reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 20 * CA 95054 USA or visit www.sun.com if you need additional information or 21 * have any questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.oops; 26 27 // An OopVisitor can be used to inspect all fields within an object. 28 // Fields include vm fields, java fields, indexable fields. 29 30 public interface OopVisitor { 31 // Called before visiting an object 32 public void prologue(); 33 34 // Called after visiting an object 35 public void epilogue(); 36 37 public void setObj(Oop obj); 38 39 // Returns the object being visited 40 public Oop getObj(); 41 42 // Callback methods for each field type in an object 43 public void doOop(OopField field, boolean isVMField); 44 public void doOop(NarrowOopField field, boolean isVMField); 45 public void doByte(ByteField field, boolean isVMField); 46 public void doChar(CharField field, boolean isVMField); 47 public void doBoolean(BooleanField field, boolean isVMField); 48 public void doShort(ShortField field, boolean isVMField); 49 public void doInt(IntField field, boolean isVMField); 50 public void doLong(LongField field, boolean isVMField); 51 public void doFloat(FloatField field, boolean isVMField); 52 public void doDouble(DoubleField field, boolean isVMField); 53 public void doCInt(CIntField field, boolean isVMField); 54 };