Mercurial > hg > graal-compiler
comparison agent/src/share/classes/sun/jvm/hotspot/memory/GenCollectedHeap.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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-1:000000000000 | 0:a61af66fc99e |
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1 /* | |
2 * Copyright 2000-2003 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.memory; | |
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 import sun.jvm.hotspot.utilities.*; | |
35 | |
36 public class GenCollectedHeap extends SharedHeap { | |
37 private static CIntegerField nGensField; | |
38 private static long gensOffset; | |
39 private static AddressField genSpecsField; | |
40 | |
41 private static GenerationFactory genFactory; | |
42 | |
43 static { | |
44 VM.registerVMInitializedObserver(new Observer() { | |
45 public void update(Observable o, Object data) { | |
46 initialize(VM.getVM().getTypeDataBase()); | |
47 } | |
48 }); | |
49 } | |
50 | |
51 private static synchronized void initialize(TypeDataBase db) { | |
52 Type type = db.lookupType("GenCollectedHeap"); | |
53 | |
54 nGensField = type.getCIntegerField("_n_gens"); | |
55 gensOffset = type.getField("_gens").getOffset(); | |
56 genSpecsField = type.getAddressField("_gen_specs"); | |
57 | |
58 genFactory = new GenerationFactory(); | |
59 } | |
60 | |
61 public GenCollectedHeap(Address addr) { | |
62 super(addr); | |
63 } | |
64 | |
65 public int nGens() { | |
66 return (int) nGensField.getValue(addr); | |
67 } | |
68 | |
69 public Generation getGen(int i) { | |
70 if (Assert.ASSERTS_ENABLED) { | |
71 Assert.that((i >= 0) && (i < nGens()), "Index " + i + | |
72 " out of range (should be between 0 and " + nGens() + ")"); | |
73 } | |
74 | |
75 if ((i < 0) || (i >= nGens())) { | |
76 return null; | |
77 } | |
78 | |
79 Address genAddr = addr.getAddressAt(gensOffset + | |
80 (i * VM.getVM().getAddressSize())); | |
81 return genFactory.newObject(addr.getAddressAt(gensOffset + | |
82 (i * VM.getVM().getAddressSize()))); | |
83 } | |
84 | |
85 public boolean isIn(Address a) { | |
86 for (int i = 0; i < nGens(); i++) { | |
87 Generation gen = getGen(i); | |
88 if (gen.isIn(a)) { | |
89 return true; | |
90 } | |
91 } | |
92 | |
93 return permGen().isIn(a); | |
94 } | |
95 | |
96 public long capacity() { | |
97 long capacity = 0; | |
98 for (int i = 0; i < nGens(); i++) { | |
99 capacity += getGen(i).capacity(); | |
100 } | |
101 return capacity; | |
102 } | |
103 | |
104 public long used() { | |
105 long used = 0; | |
106 for (int i = 0; i < nGens(); i++) { | |
107 used += getGen(i).used(); | |
108 } | |
109 return used; | |
110 } | |
111 | |
112 /** Package-private access to GenerationSpecs */ | |
113 GenerationSpec spec(int level) { | |
114 if (Assert.ASSERTS_ENABLED) { | |
115 Assert.that((level >= 0) && (level < nGens()), "Index " + level + | |
116 " out of range (should be between 0 and " + nGens() + ")"); | |
117 } | |
118 | |
119 if ((level < 0) || (level >= nGens())) { | |
120 return null; | |
121 } | |
122 | |
123 Address ptrList = genSpecsField.getValue(addr); | |
124 if (ptrList == null) { | |
125 return null; | |
126 } | |
127 return (GenerationSpec) | |
128 VMObjectFactory.newObject(GenerationSpec.class, | |
129 ptrList.getAddressAt(level * VM.getVM().getAddressSize())); | |
130 } | |
131 | |
132 public CollectedHeapName kind() { | |
133 return CollectedHeapName.GEN_COLLECTED_HEAP; | |
134 } | |
135 | |
136 public void printOn(PrintStream tty) { | |
137 for (int i = 0; i < nGens(); i++) { | |
138 tty.print("Gen " + i + ": "); | |
139 getGen(i).printOn(tty); | |
140 tty.println("Invocations: " + getGen(i).invocations()); | |
141 tty.println(); | |
142 } | |
143 permGen().printOn(tty); | |
144 tty.println("Invocations: " + permGen().invocations()); | |
145 } | |
146 } |