1 /* 2 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 27 /* 28 * The Original Code is HAT. The Initial Developer of the 29 * Original Code is Bill Foote, with contributions from others 30 * at JavaSoft/Sun. 31 */ 32 33 package jdk.test.lib.hprof.model; 34 35 /** 36 * 37 * @author Bill Foote 38 */ 39 40 /** 41 * Represents the value of a static field of a JavaClass 42 */ 43 44 public class JavaStatic { 45 46 private JavaField field; 47 private JavaThing value; 48 49 public JavaStatic(JavaField field, JavaThing value) { 50 this.field = field; 51 this.value = value; 52 } 53 54 public void resolve(JavaClass clazz, Snapshot snapshot) { 55 long id = -1; 56 if (value instanceof JavaObjectRef) { 57 id = ((JavaObjectRef)value).getId(); 58 } 59 value = value.dereference(snapshot, field); 60 if (value.isHeapAllocated() && 61 clazz.getLoader() == snapshot.getNullThing()) { 62 // static fields are only roots if they are in classes 63 // loaded by the root classloader. 64 JavaHeapObject ho = (JavaHeapObject) value; 65 String s = "Static reference from " + clazz.getName() 66 + "." + field.getName(); 67 snapshot.addRoot(new Root(id, clazz.getId(), 68 Root.JAVA_STATIC, s)); 69 } 70 } 71 72 public JavaField getField() { 73 return field; 74 } 75 76 public JavaThing getValue() { 77 return value; 78 } 79 }