1 /*

     2  * Copyright (c) 1997, 2008, 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 com.sun.tools.hat.internal.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 }