Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/BasicHashtable.java @ 6197:d2a62e0f25eb
6995781: Native Memory Tracking (Phase 1)
7151532: DCmd for hotspot native memory tracking
Summary: Implementation of native memory tracking phase 1, which tracks VM native memory usage, and related DCmd
Reviewed-by: acorn, coleenp, fparain
| author | zgu |
|---|---|
| date | Thu, 28 Jun 2012 17:03:16 -0400 |
| parents | c18cbe5936b8 |
| children | b9a9ed0f8eeb |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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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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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.utilities; | |
| 26 | |
| 27 import java.util.*; | |
| 28 import sun.jvm.hotspot.debugger.*; | |
| 29 import sun.jvm.hotspot.types.*; | |
| 30 import sun.jvm.hotspot.runtime.*; | |
| 31 | |
| 32 // Superclass for symbol and string tables. | |
| 33 | |
| 34 public class BasicHashtable extends VMObject { | |
| 35 static { | |
| 36 VM.registerVMInitializedObserver(new Observer() { | |
| 37 public void update(Observable o, Object data) { | |
| 38 initialize(VM.getVM().getTypeDataBase()); | |
| 39 } | |
| 40 }); | |
| 41 } | |
| 42 | |
| 43 private static synchronized void initialize(TypeDataBase db) { | |
| 6197 | 44 Type type = db.lookupType("BasicHashtable<mtInternal>"); |
| 0 | 45 tableSizeField = type.getCIntegerField("_table_size"); |
| 46 bucketsField = type.getAddressField("_buckets"); | |
| 6197 | 47 bucketSize = db.lookupType("HashtableBucket<mtInternal>").getSize(); |
| 0 | 48 } |
| 49 | |
| 50 // Fields | |
| 51 private static CIntegerField tableSizeField; | |
| 52 private static AddressField bucketsField; | |
| 53 private static long bucketSize; | |
| 54 | |
| 55 // Accessors | |
| 56 protected int tableSize() { | |
| 57 return (int) tableSizeField.getValue(addr); | |
| 58 } | |
| 59 | |
| 60 protected BasicHashtableEntry bucket(int i) { | |
| 61 if (Assert.ASSERTS_ENABLED) { | |
| 62 Assert.that(i >= 0 && i < tableSize(), "Invalid bucket id"); | |
| 63 } | |
| 64 Address tmp = bucketsField.getValue(addr); | |
| 65 tmp = tmp.addOffsetTo(i * bucketSize); | |
| 66 HashtableBucket bucket = (HashtableBucket) VMObjectFactory.newObject( | |
| 67 HashtableBucket.class, tmp); | |
| 68 return bucket.getEntry(getHashtableEntryClass()); | |
| 69 } | |
| 70 | |
| 71 // derived class may return Class<? extends BasicHashtableEntry> | |
| 72 protected Class getHashtableEntryClass() { | |
| 73 return BasicHashtableEntry.class; | |
| 74 } | |
| 75 | |
| 76 public BasicHashtable(Address addr) { | |
| 77 super(addr); | |
| 78 } | |
| 79 } |