Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/memory/GenCollectedHeap.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
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2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
| 0 | 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 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
1552
diff
changeset
|
93 return false; |
| 0 | 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 } | |
| 144 } |