| 1 | /* |
| 2 | * Copyright 2008 Eric Caspole |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this |
| 5 | * file except in compliance with the License. You may obtain a copy of the License at |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software distributed under |
| 10 | * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 11 | * KIND, either express or implied. See the License for the specific language governing |
| 12 | * permissions and limitations under the License. |
| 13 | */ |
| 14 | |
| 15 | package net.sf.madmap; |
| 16 | |
| 17 | import java.io.*; |
| 18 | import java.util.*; |
| 19 | |
| 20 | /** |
| 21 | * HprofClassElement is the representation of a java class in the heap of the |
| 22 | * hprof target process. It manages the field names for HprofObjects to reduce |
| 23 | * the footprint of the HprofObjects. It has fields to add up certain totals |
| 24 | * during the analysis phase. |
| 25 | * |
| 26 | * @author ecaspole |
| 27 | * |
| 28 | */ |
| 29 | public class HprofClassElement extends HprofHeapCollectable { |
| 30 | String _type_name; |
| 31 | Object[] _static_names = null; |
| 32 | Object[] _static_refs = null; // this field could be removed!! |
| 33 | ArrayList _nonstatic_names = null; |
| 34 | long[] _childrenRefs = null; |
| 35 | |
| 36 | int _instancesCount = 0; |
| 37 | int _finalizableCount = 0; |
| 38 | |
| 39 | long _instancesSize = 0; |
| 40 | long _finalizableSize = 0; |
| 41 | long _super; |
| 42 | long _loader; |
| 43 | long _instance_size; |
| 44 | long _totalRetainedSize = 0; |
| 45 | |
| 46 | public HprofClassElement( long addr, String tn, int trc, long sooperclass, long loader, ArrayList n, ArrayList r ) { |
| 47 | super( addr /*, trc */ ); |
| 48 | _type_name = tn; |
| 49 | _super = sooperclass; |
| 50 | _loader = loader; |
| 51 | if (( n != null ) && ( r != null )) { |
| 52 | buildActualChildrenRefs( n, r ); |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | // Constructor for Objects to add their type... |
| 57 | public HprofClassElement( long addr, String tn ) { |
| 58 | super( addr ); |
| 59 | _instance_size = 0; |
| 60 | _type_name = tn; |
| 61 | } |
| 62 | |
| 63 | // Constructor for Objects to add their type... |
| 64 | public HprofClassElement( long addr, String tn, long size ) { |
| 65 | super( addr ); |
| 66 | _instance_size = size; |
| 67 | _type_name = tn; |
| 68 | } |
| 69 | |
| 70 | public long getTotalRetainedSize() { return _retainedSize; } |
| 71 | |
| 72 | public void setTotalRetainedSize( long newSize) { |
| 73 | _retainedSize = newSize; |
| 74 | } |
| 75 | |
| 76 | public short[] setNonstaticFieldNames( ArrayList names ) { |
| 77 | long indexes = 0; |
| 78 | boolean matched = false; |
| 79 | short[] result; |
| 80 | ArrayList currResult = new ArrayList(); |
| 81 | |
| 82 | assert names != null : "names is null!"; |
| 83 | assert names.size() != 0 : "names is empty!"; |
| 84 | |
| 85 | if ( _nonstatic_names != null ) { |
| 86 | |
| 87 | for ( short i = 0; i < names.size(); i++, matched = false ) { |
| 88 | String s = (String) names.get( i ); |
| 89 | for ( int j = 0; j < _nonstatic_names.size(); j++ ) { |
| 90 | String t = (String) _nonstatic_names.get( j ); |
| 91 | |
| 92 | if ( s == t ) { |
| 93 | assert (s == t) == (s.equals( t )) : "field names are not interned correctly." ; |
| 94 | currResult.add(j); |
| 95 | matched = true; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | if ( ! matched ) { |
| 100 | // Didn't find a match |
| 101 | _nonstatic_names.add( s ); |
| 102 | currResult.add(_nonstatic_names.size() - 1); |
| 103 | } |
| 104 | } |
| 105 | } else { |
| 106 | _nonstatic_names = names; |
| 107 | for ( int k = 0; k < names.size(); k++ ) { |
| 108 | currResult.add(k); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | result = new short[ currResult.size() ]; |
| 113 | for( int m = 0; m < currResult.size(); m++ ) { |
| 114 | result[m] = (short)(int)((Integer)currResult.get(m)); |
| 115 | } |
| 116 | return result; |
| 117 | } |
| 118 | |
| 119 | |
| 120 | // This sucks. |
| 121 | public void buildActualChildrenRefs( ArrayList n, ArrayList r ) { |
| 122 | if ( _super != 0 ) { |
| 123 | _childrenRefs = new long[ r.size() + 1 ]; |
| 124 | _childrenRefs[ 0 ] = _super; |
| 125 | for( int i = 1; i < _childrenRefs.length; i++ ) { |
| 126 | _childrenRefs[ i ] = ((Long)r.get( i - 1 )).longValue(); |
| 127 | } |
| 128 | } else { |
| 129 | _childrenRefs = longArrayListtoLongArray( r ); |
| 130 | } |
| 131 | |
| 132 | _static_names = n.toArray(); |
| 133 | _static_refs = r.toArray(); |
| 134 | } |
| 135 | |
| 136 | // For updating an already-seen class, when the class is actually seen in the file |
| 137 | public void completeClass( String tn, int trc, long s, long loader, ArrayList n, ArrayList r ) { |
| 138 | // We could get both java.util.HashMap$Entry and Ljava/util/HashMap$Entry; at |
| 139 | // the same time from one hsci file... |
| 140 | //assert tn.equals( _type_name ) : "Class hash table is messed up." ; |
| 141 | |
| 142 | //setStackTrace(trc); |
| 143 | _super = s; |
| 144 | _loader = loader; |
| 145 | |
| 146 | buildActualChildrenRefs( n, r ); |
| 147 | } |
| 148 | |
| 149 | |
| 150 | public int getInstanceCount() { return _instancesCount; } |
| 151 | public void setInstanceCount(int i) { _instancesCount = i; } |
| 152 | public long getInstanceSize() { return _instancesSize; } |
| 153 | public void setInstanceSize(long i) { _instancesSize = i; } |
| 154 | |
| 155 | public int getFinalizableCount() { return _finalizableCount; } |
| 156 | public void setFinalizableCount(int i) { _finalizableCount = i; } |
| 157 | public long getFinalizableSize() { return _finalizableSize; } |
| 158 | public void setFinalizableSize(long i) { _finalizableSize = i; } |
| 159 | |
| 160 | public String className() { return _type_name; } |
| 161 | |
| 162 | // Classes do not contribute to live size in heap... |
| 163 | public long size() { return 0; } |
| 164 | |
| 165 | // Size of an object of this type |
| 166 | public long instanceSize() { |
| 167 | return _instance_size; |
| 168 | } |
| 169 | |
| 170 | // Size of an object of this type, update if an array was seen first |
| 171 | public void updateInstanceSize(long sz) { |
| 172 | _instance_size = sz; |
| 173 | } |
| 174 | |
| 175 | public ArrayList nonstatic_field_names() { |
| 176 | assert _nonstatic_names != null : "nonstatic_field_names is null!" ; |
| 177 | return _nonstatic_names; |
| 178 | } |
| 179 | |
| 180 | |
| 181 | public long children_size() { |
| 182 | if ( _static_refs != null && _childrenRefs != null ) { |
| 183 | return _childrenRefs.length; |
| 184 | } |
| 185 | return 0; |
| 186 | } |
| 187 | |
| 188 | |
| 189 | public long[] children() { return _childrenRefs; } |
| 190 | |
| 191 | public String toString() { |
| 192 | StringBuffer p = new StringBuffer(); |
| 193 | |
| 194 | p.append( "CLS " + Long.toHexString(_objectaddr) + " (name=" + _type_name + /* ", trace=" + getStackTrace() + */ ")\n" ); |
| 195 | p.append( " " + "super" + "\t" + Long.toHexString( _super ) + "\n"); |
| 196 | p.append( " " + "loader" + "\t" + Long.toHexString( _loader ) + "\n"); |
| 197 | if ( _static_names != null ) { |
| 198 | for (int i = 0; i < _static_names.length; i++ ) { |
| 199 | String n = (String) _static_names[ i ]; |
| 200 | Long r = (Long) _static_refs[ i ]; |
| 201 | p.append( " static " + n + "\t" + Long.toHexString( r ) + "\n"); |
| 202 | } |
| 203 | } |
| 204 | if ( _nonstatic_names != null ) { |
| 205 | p.append(" # _nonstatic_names.length : " + _nonstatic_names.size() + "\n"); |
| 206 | p.append(" # _nonstatic_names = " + _nonstatic_names + "\n"); |
| 207 | } |
| 208 | p.append( " # _instance_size = " + _instance_size + "\n"); |
| 209 | p.append( " # instance count = " + getInstanceCount() + "\n"); |
| 210 | p.append( " # instance total sz = " + getInstanceSize() + "\n"); |
| 211 | return p.toString(); |
| 212 | } |
| 213 | } |