Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/memory/GenerationFactory.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 * | |
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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.util.*; | |
| 28 | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.runtime.*; | |
| 31 import sun.jvm.hotspot.types.*; | |
| 32 | |
| 33 /** Factory containing a VirtualConstructor suitable for instantiating | |
| 34 wrapper objects for all types of generations */ | |
| 35 | |
| 36 public class GenerationFactory { | |
| 37 private static VirtualConstructor ctor; | |
| 38 | |
| 39 static { | |
| 40 VM.registerVMInitializedObserver(new Observer() { | |
| 41 public void update(Observable o, Object data) { | |
| 42 initialize(VM.getVM().getTypeDataBase()); | |
| 43 } | |
| 44 }); | |
| 45 } | |
| 46 | |
| 47 private static synchronized void initialize(TypeDataBase db) { | |
| 48 ctor = new VirtualConstructor(db); | |
| 49 | |
| 50 ctor.addMapping("DefNewGeneration", DefNewGeneration.class); | |
| 51 ctor.addMapping("ParNewGeneration", ParNewGeneration.class); | |
| 52 ctor.addMapping("TenuredGeneration", TenuredGeneration.class); | |
| 53 ctor.addMapping("ConcurrentMarkSweepGeneration", ConcurrentMarkSweepGeneration.class); | |
| 54 } | |
| 55 | |
| 56 public static Generation newObject(Address addr) { | |
| 57 try { | |
| 58 return (Generation) ctor.instantiateWrapperFor(addr); | |
| 59 } catch (WrongTypeException e) { | |
| 60 return new Generation(addr) { | |
| 61 public String name() { | |
| 62 return "unknown generation type"; | |
| 63 } | |
| 64 public void spaceIterate(SpaceClosure blk, boolean usedOnly) { | |
| 65 } | |
| 66 public void printOn(java.io.PrintStream tty) { | |
| 67 tty.println("unknown subtype of Generation @ " + getAddress() + " (" + | |
| 68 virtualSpace().low() + "," + virtualSpace().high() + ")"); | |
| 69 } | |
| 70 public long used() { | |
| 71 return 0; | |
| 72 } | |
| 73 public long free() { | |
| 74 return 0; | |
| 75 } | |
| 76 public long capacity() { | |
| 77 return 0; | |
| 78 } | |
| 79 public long contiguousAvailable() { | |
| 80 return 0; | |
| 81 } | |
| 82 | |
| 83 }; | |
| 84 } | |
| 85 } | |
| 86 } |