author | ohair |
Wed, 30 Apr 2008 17:34:41 -0700 | |
changeset 468 | 642c8c0be52e |
parent 2 | 90ce3da70b43 |
child 715 | f16baef3a20e |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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642c8c0be52e
6695553: Cleanup GPLv2+SPL legal notices in hat sources
ohair
parents:
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diff
changeset
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* Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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/* |
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* The Original Code is HAT. The Initial Developer of the |
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* Original Code is Bill Foote, with contributions from others |
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468
642c8c0be52e
6695553: Cleanup GPLv2+SPL legal notices in hat sources
ohair
parents:
2
diff
changeset
|
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* at JavaSoft/Sun. |
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*/ |
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package com.sun.tools.hat.internal.model; |
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import java.io.IOException; |
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import com.sun.tools.hat.internal.parser.ReadBuffer; |
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/** |
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* @author Bill Foote |
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*/ |
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public class JavaObjectArray extends JavaLazyReadObject { |
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private Object clazz; // Long before resolve, the class after resolve |
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public JavaObjectArray(long classID, long offset) { |
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super(offset); |
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this.clazz = makeId(classID); |
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} |
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public JavaClass getClazz() { |
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return (JavaClass) clazz; |
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} |
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public void resolve(Snapshot snapshot) { |
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if (clazz instanceof JavaClass) { |
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return; |
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} |
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long classID = getIdValue((Number)clazz); |
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if (snapshot.isNewStyleArrayClass()) { |
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// Modern heap dumps do this |
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JavaThing t = snapshot.findThing(classID); |
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if (t instanceof JavaClass) { |
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clazz = (JavaClass) t; |
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} |
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} |
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if (!(clazz instanceof JavaClass)) { |
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JavaThing t = snapshot.findThing(classID); |
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if (t != null && t instanceof JavaClass) { |
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JavaClass el = (JavaClass) t; |
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String nm = el.getName(); |
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if (!nm.startsWith("[")) { |
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nm = "L" + el.getName() + ";"; |
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} |
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clazz = snapshot.getArrayClass(nm); |
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} |
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} |
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if (!(clazz instanceof JavaClass)) { |
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clazz = snapshot.getOtherArrayType(); |
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} |
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((JavaClass)clazz).addInstance(this); |
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super.resolve(snapshot); |
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} |
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public JavaThing[] getValues() { |
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return getElements(); |
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} |
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public JavaThing[] getElements() { |
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Snapshot snapshot = getClazz().getSnapshot(); |
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byte[] data = getValue(); |
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final int idSize = snapshot.getIdentifierSize(); |
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final int numElements = data.length / idSize; |
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JavaThing[] elements = new JavaThing[numElements]; |
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int index = 0; |
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for (int i = 0; i < elements.length; i++) { |
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long id = objectIdAt(index, data); |
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index += idSize; |
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elements[i] = snapshot.findThing(id); |
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} |
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return elements; |
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} |
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public int compareTo(JavaThing other) { |
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if (other instanceof JavaObjectArray) { |
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return 0; |
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} |
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return super.compareTo(other); |
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} |
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public int getLength() { |
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return getValueLength() / getClazz().getIdentifierSize(); |
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} |
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public void visitReferencedObjects(JavaHeapObjectVisitor v) { |
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super.visitReferencedObjects(v); |
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JavaThing[] elements = getElements(); |
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for (int i = 0; i < elements.length; i++) { |
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if (elements[i] != null && elements[i] instanceof JavaHeapObject) { |
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v.visit((JavaHeapObject) elements[i]); |
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} |
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} |
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} |
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/** |
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* Describe the reference that this thing has to target. This will only |
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* be called if target is in the array returned by getChildrenForRootset. |
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*/ |
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public String describeReferenceTo(JavaThing target, Snapshot ss) { |
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JavaThing[] elements = getElements(); |
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for (int i = 0; i < elements.length; i++) { |
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if (elements[i] == target) { |
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return "Element " + i + " of " + this; |
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} |
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} |
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return super.describeReferenceTo(target, ss); |
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} |
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/* |
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* Java object array record (HPROF_GC_OBJ_ARRAY_DUMP) |
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* looks as below: |
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* |
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* object ID |
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* stack trace serial number (int) |
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* array length (int) |
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* array class ID |
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* array element IDs |
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*/ |
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protected final int readValueLength() throws IOException { |
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JavaClass cl = getClazz(); |
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ReadBuffer buf = cl.getReadBuffer(); |
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int idSize = cl.getIdentifierSize(); |
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long offset = getOffset() + idSize + 4; |
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int len = buf.getInt(offset); |
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return len * cl.getIdentifierSize(); |
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} |
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protected final byte[] readValue() throws IOException { |
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JavaClass cl = getClazz(); |
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ReadBuffer buf = cl.getReadBuffer(); |
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int idSize = cl.getIdentifierSize(); |
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long offset = getOffset() + idSize + 4; |
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int len = buf.getInt(offset); |
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if (len == 0) { |
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return Snapshot.EMPTY_BYTE_ARRAY; |
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} else { |
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byte[] res = new byte[len * idSize]; |
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buf.get(offset + 4 + idSize, res); |
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return res; |
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} |
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} |
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} |