Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/memory/ContiguousSpace.java @ 1913:3b2dea75431e
6984311: JSR 292 needs optional bootstrap method parameters
Summary: Allow CONSTANT_InvokeDynamic nodes to have any number of extra operands.
Reviewed-by: twisti
| author | jrose |
|---|---|
| date | Sat, 30 Oct 2010 13:08:23 -0700 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2004, 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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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.memory; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 | |
| 30 import sun.jvm.hotspot.debugger.*; | |
| 31 import sun.jvm.hotspot.runtime.*; | |
| 32 import sun.jvm.hotspot.types.*; | |
| 33 | |
| 34 public class ContiguousSpace extends CompactibleSpace { | |
| 35 private static AddressField topField; | |
| 36 | |
| 37 static { | |
| 38 VM.registerVMInitializedObserver(new Observer() { | |
| 39 public void update(Observable o, Object data) { | |
| 40 initialize(VM.getVM().getTypeDataBase()); | |
| 41 } | |
| 42 }); | |
| 43 } | |
| 44 | |
| 45 private static synchronized void initialize(TypeDataBase db) { | |
| 46 Type type = db.lookupType("ContiguousSpace"); | |
| 47 | |
| 48 topField = type.getAddressField("_top"); | |
| 49 } | |
| 50 | |
| 51 public ContiguousSpace(Address addr) { | |
| 52 super(addr); | |
| 53 } | |
| 54 | |
| 55 public Address top() { | |
| 56 return topField.getValue(addr); | |
| 57 } | |
| 58 | |
| 59 /** In bytes */ | |
| 60 public long capacity() { | |
| 61 return end().minus(bottom()); | |
| 62 } | |
| 63 | |
| 64 /** In bytes */ | |
| 65 public long used() { | |
| 66 return top().minus(bottom()); | |
| 67 } | |
| 68 | |
| 69 /** In bytes */ | |
| 70 public long free() { | |
| 71 return end().minus(top()); | |
| 72 } | |
| 73 | |
| 74 /** In a contiguous space we have a more obvious bound on what parts | |
| 75 contain objects. */ | |
| 76 public MemRegion usedRegion() { | |
| 77 return new MemRegion(bottom(), top()); | |
| 78 } | |
| 79 | |
| 80 /** Returns regions of Space where live objects live */ | |
| 81 public List/*<MemRegion>*/ getLiveRegions() { | |
| 82 List res = new ArrayList(); | |
| 83 res.add(new MemRegion(bottom(), top())); | |
| 84 return res; | |
| 85 } | |
| 86 | |
| 87 /** Testers */ | |
| 88 public boolean contains(Address p) { | |
| 89 return (bottom().lessThanOrEqual(p) && top().greaterThan(p)); | |
| 90 } | |
| 91 | |
| 92 public void printOn(PrintStream tty) { | |
| 93 tty.print(" [" + bottom() + "," + | |
| 94 top() + "," + end() + ")"); | |
| 95 super.printOn(tty); | |
| 96 } | |
| 97 } |