Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/gc_implementation/shared/ImmutableSpace.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
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| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | a61af66fc99e |
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| 0 | 1 /* |
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2 * Copyright (c) 2003, 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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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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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 |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.gc_implementation.shared; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 | |
| 30 import sun.jvm.hotspot.debugger.*; | |
| 31 import sun.jvm.hotspot.memory.*; | |
| 32 import sun.jvm.hotspot.runtime.*; | |
| 33 import sun.jvm.hotspot.types.*; | |
| 34 | |
| 35 public abstract class ImmutableSpace extends VMObject { | |
| 36 static { | |
| 37 VM.registerVMInitializedObserver(new Observer() { | |
| 38 public void update(Observable o, Object data) { | |
| 39 initialize(VM.getVM().getTypeDataBase()); | |
| 40 } | |
| 41 }); | |
| 42 } | |
| 43 | |
| 44 private static synchronized void initialize(TypeDataBase db) { | |
| 45 Type type = db.lookupType("ImmutableSpace"); | |
| 46 bottomField = type.getAddressField("_bottom"); | |
| 47 endField = type.getAddressField("_end"); | |
| 48 } | |
| 49 | |
| 50 public ImmutableSpace(Address addr) { | |
| 51 super(addr); | |
| 52 } | |
| 53 | |
| 54 // Fields | |
| 55 private static AddressField bottomField; | |
| 56 private static AddressField endField; | |
| 57 | |
| 58 // Accessors | |
| 59 public Address bottom() { return bottomField.getValue(addr); } | |
| 60 public Address end() { return endField.getValue(addr); } | |
| 61 | |
| 62 /** Returns a subregion of the space containing all the objects in | |
| 63 the space. */ | |
| 64 public MemRegion usedRegion() { | |
| 65 return new MemRegion(bottom(), end()); | |
| 66 } | |
| 67 | |
| 68 /** Support for iteration over heap -- not sure how this will | |
| 69 interact with GC in reflective system, but necessary for the | |
| 70 debugging mechanism */ | |
| 71 public OopHandle bottomAsOopHandle() { | |
| 72 return bottomField.getOopHandle(addr); | |
| 73 } | |
| 74 | |
| 75 /** returns all MemRegions where live objects are */ | |
| 76 public abstract List/*<MemRegion>*/ getLiveRegions(); | |
| 77 | |
| 78 /** Returned value is in bytes */ | |
| 79 public long capacity() { return end().minus(bottom()); } | |
| 80 | |
| 81 public abstract long used(); | |
| 82 | |
| 83 /** Testers */ | |
| 84 public boolean contains(Address p) { | |
| 85 return (bottom().lessThanOrEqual(p) && end().greaterThan(p)); | |
| 86 } | |
| 87 | |
| 88 public void print() { printOn(System.out); } | |
| 89 public abstract void printOn(PrintStream tty); | |
| 90 } |