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comparison agent/src/share/classes/sun/jvm/hotspot/gc_implementation/parallelScavenge/ParallelScavengeHeap.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 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.gc_implementation.parallelScavenge;
26
27 import java.io.*;
28 import java.util.*;
29
30 import sun.jvm.hotspot.debugger.*;
31 import sun.jvm.hotspot.gc_interface.*;
32 import sun.jvm.hotspot.runtime.*;
33 import sun.jvm.hotspot.types.*;
34
35 public class ParallelScavengeHeap extends CollectedHeap {
36 static {
37 VM.registerVMInitializedObserver(new Observer() {
38 public void update(Observable o, Object data) {
39 initialize(VM.getVM().getTypeDataBase());
40 }
41 });
42 }
43
44 private static synchronized void initialize(TypeDataBase db) {
45 Type type = db.lookupType("ParallelScavengeHeap");
46 youngGenField = type.getAddressField("_young_gen");
47 oldGenField = type.getAddressField("_old_gen");
48 permGenField = type.getAddressField("_perm_gen");
49 }
50
51 public ParallelScavengeHeap(Address addr) {
52 super(addr);
53 }
54
55 // Fields
56 private static AddressField youngGenField;
57 private static AddressField oldGenField;
58 private static AddressField permGenField;
59
60 // Accessors
61 public PSYoungGen youngGen() {
62 return (PSYoungGen) VMObjectFactory.newObject(PSYoungGen.class, youngGenField.getValue());
63 }
64
65 public PSOldGen oldGen() {
66 return (PSOldGen) VMObjectFactory.newObject(PSOldGen.class, oldGenField.getValue());
67 }
68
69 public PSPermGen permGen() {
70 return (PSPermGen) VMObjectFactory.newObject(PSPermGen.class, permGenField.getValue());
71 }
72
73 public long capacity() {
74 return youngGen().capacity() + oldGen().capacity();
75 }
76
77 public long used() {
78 return youngGen().used() + oldGen().used();
79 }
80
81 public boolean isIn(Address a) {
82 if (youngGen().isIn(a)) {
83 return true;
84 }
85
86 if (oldGen().isIn(a)) {
87 return true;
88 }
89
90 if (permGen().isIn(a)) {
91 return true;
92 }
93
94 return false;
95 }
96
97 public CollectedHeapName kind() {
98 return CollectedHeapName.PARALLEL_SCAVENGE_HEAP;
99 }
100
101 public void printOn(PrintStream tty) {
102 tty.print("ParallelScavengeHeap [ ");
103 youngGen().printOn(tty);
104 oldGen().printOn(tty);
105 permGen().printOn(tty);
106 tty.print(" ] ");
107 }
108 }