1 /*
2 * Copyright (c) 2011, 2013, 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.
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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 package sun.jvm.hotspot.gc_implementation.g1;
26
27 import java.util.Iterator;
28 import java.util.Observable;
29 import java.util.Observer;
30
31 import sun.jvm.hotspot.debugger.Address;
32 import sun.jvm.hotspot.runtime.VM;
33 import sun.jvm.hotspot.runtime.VMObject;
34 import sun.jvm.hotspot.runtime.VMObjectFactory;
35 import sun.jvm.hotspot.types.AddressField;
36 import sun.jvm.hotspot.types.CIntegerField;
37 import sun.jvm.hotspot.types.Type;
38 import sun.jvm.hotspot.types.TypeDataBase;
39
40 // Mirror class for HeapRegionSeq. It essentially encapsulates the G1HeapRegionTable.
41
42 public class HeapRegionSeq extends VMObject {
43 // G1HeapRegionTable _regions
44 static private long regionsFieldOffset;
45 // uint _committed_length
46 static private CIntegerField numCommittedField;
47
48 static {
49 VM.registerVMInitializedObserver(new Observer() {
50 public void update(Observable o, Object data) {
51 initialize(VM.getVM().getTypeDataBase());
52 }
53 });
54 }
55
56 static private synchronized void initialize(TypeDataBase db) {
57 Type type = db.lookupType("HeapRegionSeq");
58
59 regionsFieldOffset = type.getField("_regions").getOffset();
60 numCommittedField = type.getCIntegerField("_num_committed");
61 }
62
63 private G1HeapRegionTable regions() {
64 Address regionsAddr = addr.addOffsetTo(regionsFieldOffset);
65 return (G1HeapRegionTable) VMObjectFactory.newObject(G1HeapRegionTable.class,
66 regionsAddr);
67 }
68
69 public long capacity() {
70 return length() * HeapRegion.grainBytes();
71 }
72
73 public long length() {
74 return regions().length();
75 }
76
77 public long committedLength() {
78 return numCommittedField.getValue(addr);
79 }
80
81 public Iterator<HeapRegion> heapRegionIterator() {
82 return regions().heapRegionIterator(length());
83 }
84
85 public HeapRegionSeq(Address addr) {
86 super(addr);
87 }
88 }
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1 /*
2 * Copyright (c) 2011, 2014, 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.
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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 package sun.jvm.hotspot.gc_implementation.g1;
26
27 import java.util.Iterator;
28 import java.util.Observable;
29 import java.util.Observer;
30
31 import sun.jvm.hotspot.debugger.Address;
32 import sun.jvm.hotspot.runtime.VM;
33 import sun.jvm.hotspot.runtime.VMObject;
34 import sun.jvm.hotspot.runtime.VMObjectFactory;
35 import sun.jvm.hotspot.types.AddressField;
36 import sun.jvm.hotspot.types.CIntegerField;
37 import sun.jvm.hotspot.types.Type;
38 import sun.jvm.hotspot.types.TypeDataBase;
39
40 // Mirror class for HeapRegionManager.
41
42 public class HeapRegionManager extends VMObject {
43 // G1HeapRegionTable _regions
44 static private long regionsFieldOffset;
45 // uint _committed_length
46 static private CIntegerField numCommittedField;
47
48 static {
49 VM.registerVMInitializedObserver(new Observer() {
50 public void update(Observable o, Object data) {
51 initialize(VM.getVM().getTypeDataBase());
52 }
53 });
54 }
55
56 static private synchronized void initialize(TypeDataBase db) {
57 Type type = db.lookupType("HeapRegionManager");
58
59 regionsFieldOffset = type.getField("_regions").getOffset();
60 numCommittedField = type.getCIntegerField("_num_committed");
61 }
62
63 private G1HeapRegionTable regions() {
64 Address regionsAddr = addr.addOffsetTo(regionsFieldOffset);
65 return (G1HeapRegionTable) VMObjectFactory.newObject(G1HeapRegionTable.class,
66 regionsAddr);
67 }
68
69 public long capacity() {
70 return length() * HeapRegion.grainBytes();
71 }
72
73 public long length() {
74 return regions().length();
75 }
76
77 public long committedLength() {
78 return numCommittedField.getValue(addr);
79 }
80
81 public Iterator<HeapRegion> heapRegionIterator() {
82 return regions().heapRegionIterator(length());
83 }
84
85 public HeapRegionManager(Address addr) {
86 super(addr);
87 }
88 }
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