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comparison agent/src/share/classes/sun/jvm/hotspot/runtime/StackValueCollection.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2001-2003 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.runtime;
26
27 import java.util.*;
28
29 import sun.jvm.hotspot.debugger.*;
30
31 public class StackValueCollection {
32 private List list;
33
34 public StackValueCollection() { list = new ArrayList(); }
35 public StackValueCollection(int length) { list = new ArrayList(length); }
36
37 public void add(StackValue val) { list.add(val); }
38 public int size() { return list.size(); }
39 public boolean isEmpty() { return (size() == 0); }
40 public StackValue get(int i) { return (StackValue) list.get(i); }
41
42 // Get typed locals/expressions
43 // FIXME: must figure out whether word swapping is necessary on x86
44 public boolean booleanAt(int slot) { return (int)get(slot).getInteger() != 0; }
45 public byte byteAt(int slot) { return (byte) get(slot).getInteger(); }
46 public char charAt(int slot) { return (char) get(slot).getInteger(); }
47 public short shortAt(int slot) { return (short) get(slot).getInteger(); }
48 public int intAt(int slot) { return (int) get(slot).getInteger(); }
49 public long longAt(int slot) { return VM.getVM().buildLongFromIntsPD((int) get(slot).getInteger(),
50 (int) get(slot+1).getInteger()); }
51 public OopHandle oopHandleAt(int slot) { return get(slot).getObject(); }
52 public float floatAt(int slot) { return Float.intBitsToFloat(intAt(slot)); }
53 public double doubleAt(int slot) { return Double.longBitsToDouble(longAt(slot)); }
54 }