Mercurial > hg > graal-jvmci-8
annotate agent/src/share/classes/sun/jvm/hotspot/gc_implementation/g1/HeapRegion.java @ 24234:ea6f94ab283b default tip
Added tag jvmci-0.36 for changeset 8128b98d4736
author | Gilles Duboscq <gilles.m.duboscq@oracle.com> |
---|---|
date | Mon, 18 Sep 2017 18:49:45 +0200 |
parents | 1526a938e670 |
children |
rev | line source |
---|---|
3972 | 1 /* |
2 * Copyright (c) 2011, 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 | |
20276
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
27 import java.util.ArrayList; |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
28 import java.util.List; |
3972 | 29 import java.util.Observable; |
30 import java.util.Observer; | |
31 import sun.jvm.hotspot.debugger.Address; | |
20276
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
32 import sun.jvm.hotspot.memory.CompactibleSpace; |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
33 import sun.jvm.hotspot.memory.MemRegion; |
3972 | 34 import sun.jvm.hotspot.runtime.VM; |
20276
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
35 import sun.jvm.hotspot.types.AddressField; |
3972 | 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 HeapRegion. Currently we don't actually include | |
20276
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
41 // any of its fields but only iterate over it. |
3972 | 42 |
20276
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
43 public class HeapRegion extends CompactibleSpace { |
3972 | 44 // static int GrainBytes; |
45 static private CIntegerField grainBytesField; | |
20276
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
46 static private AddressField topField; |
3972 | 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("HeapRegion"); | |
58 | |
59 grainBytesField = type.getCIntegerField("GrainBytes"); | |
20276
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
60 topField = type.getAddressField("_top"); |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
61 |
3972 | 62 } |
63 | |
64 static public long grainBytes() { | |
65 return grainBytesField.getValue(); | |
66 } | |
67 | |
68 public HeapRegion(Address addr) { | |
69 super(addr); | |
70 } | |
20276
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
71 |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
72 public Address top() { |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
73 return topField.getValue(addr); |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
74 } |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
75 |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
76 @Override |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
77 public List getLiveRegions() { |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
78 List res = new ArrayList(); |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
79 res.add(new MemRegion(bottom(), top())); |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
80 return res; |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
81 } |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
82 |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
83 @Override |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
84 public long used() { |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
85 return top().minus(bottom()); |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
86 } |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
87 |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
88 @Override |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
89 public long free() { |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
90 return end().minus(top()); |
1526a938e670
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
3972
diff
changeset
|
91 } |
3972 | 92 } |