Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/oops/ObjectHistogramElement.java @ 196:d1605aabd0a1 jdk7-b30
6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell
| author | xdono |
|---|---|
| date | Wed, 02 Jul 2008 12:55:16 -0700 |
| parents | ba764ed4b6f2 |
| children | c18cbe5936b8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 2000-2008 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.oops; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.memory.*; | |
| 30 import sun.jvm.hotspot.runtime.*; | |
| 31 | |
| 32 public class ObjectHistogramElement { | |
| 33 | |
| 34 private Klass klass; | |
| 35 private long count; // Number of instances of klass | |
| 36 private long size; // Total size of all these instances | |
| 37 | |
| 38 public ObjectHistogramElement(Klass k) { | |
| 39 klass = k; | |
| 40 count = 0; | |
| 41 size = 0; | |
| 42 } | |
| 43 | |
| 44 public void updateWith(Oop obj) { | |
| 45 count = count + 1; | |
| 46 size = size + obj.getObjectSize(); | |
| 47 } | |
| 48 | |
| 49 public int compare(ObjectHistogramElement other) { | |
| 50 return (int) (other.size - size); | |
| 51 } | |
| 52 | |
| 53 /** Klass for this ObjectHistogramElement */ | |
| 54 public Klass getKlass() { | |
| 55 return klass; | |
| 56 } | |
| 57 | |
| 58 /** Number of instances of klass */ | |
| 59 public long getCount() { | |
| 60 return count; | |
| 61 } | |
| 62 | |
| 63 /** Total size of all these instances */ | |
| 64 public long getSize() { | |
| 65 return size; | |
| 66 } | |
| 67 | |
| 68 private String getInternalName(Klass k) { | |
| 69 ByteArrayOutputStream bos = new ByteArrayOutputStream(); | |
| 70 getKlass().printValueOn(new PrintStream(bos)); | |
| 71 // '*' is used to denote VM internal klasses. | |
| 72 return "* " + bos.toString(); | |
| 73 } | |
| 74 | |
| 75 /** Human readable description **/ | |
| 76 public String getDescription() { | |
| 77 Klass k = getKlass(); | |
| 78 if (k instanceof InstanceKlass) { | |
| 79 return k.getName().asString().replace('/', '.'); | |
| 80 } else if (k instanceof ArrayKlass) { | |
| 81 ArrayKlass ak = (ArrayKlass) k; | |
| 82 if (k instanceof TypeArrayKlass) { | |
| 83 TypeArrayKlass tak = (TypeArrayKlass) ak; | |
| 84 return tak.getElementTypeName() + "[]"; | |
| 85 } else if (k instanceof ObjArrayKlass) { | |
| 86 ObjArrayKlass oak = (ObjArrayKlass) ak; | |
| 87 // See whether it's a "system objArray" | |
| 88 if (oak.equals(VM.getVM().getUniverse().systemObjArrayKlassObj())) { | |
| 89 return "* System ObjArray"; | |
| 90 } | |
| 91 Klass bottom = oak.getBottomKlass(); | |
| 92 int dim = (int) oak.getDimension(); | |
| 93 StringBuffer buf = new StringBuffer(); | |
| 94 if (bottom instanceof TypeArrayKlass) { | |
| 95 buf.append(((TypeArrayKlass) bottom).getElementTypeName()); | |
| 96 } else if (bottom instanceof InstanceKlass) { | |
| 97 buf.append(bottom.getName().asString().replace('/', '.')); | |
| 98 } else { | |
| 99 throw new RuntimeException("should not reach here"); | |
| 100 } | |
| 101 for (int i=0; i < dim; i++) { | |
| 102 buf.append("[]"); | |
| 103 } | |
| 104 return buf.toString(); | |
| 105 } | |
| 106 } | |
| 107 return getInternalName(k); | |
| 108 } | |
| 109 | |
| 110 public static void titleOn(PrintStream tty) { | |
| 111 tty.println("Object Histogram:"); | |
| 112 tty.println(); | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
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113 tty.println("num " + "\t" + " #instances" + "\t" + "#bytes" + "\t" + "Class description"); |
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ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
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114 tty.println("--------------------------------------------------------------------------"); |
| 0 | 115 } |
| 116 | |
| 117 public void printOn(PrintStream tty) { | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
118 tty.print(count + "\t" + size + "\t"); |
| 0 | 119 tty.print(getDescription()); |
| 120 tty.println(); | |
| 121 } | |
| 122 } |