Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/soql/JSJavaFrame.java @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 0251d217257f |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6964458: Reimplement class meta-data storage to use native memory
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2 * Copyright (c) 2004, 2012, 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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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.soql; | |
| 26 | |
| 27 import java.util.*; | |
| 28 import sun.jvm.hotspot.debugger.*; | |
| 29 import sun.jvm.hotspot.oops.*; | |
| 30 import sun.jvm.hotspot.runtime.*; | |
| 31 | |
| 32 public class JSJavaFrame extends DefaultScriptObject { | |
| 33 private static final int FIELD_METHOD = 0; | |
| 34 private static final int FIELD_BCI = 1; | |
| 35 private static final int FIELD_LINE_NUMBER = 2; | |
| 36 private static final int FIELD_LOCALS = 3; | |
| 37 private static final int FIELD_THIS_OBJECT = 4; | |
| 38 private static final int FIELD_THREAD = 5; | |
| 39 private static final int FIELD_UNDEFINED = -1; | |
| 40 | |
| 41 public JSJavaFrame(JavaVFrame jvf, JSJavaFactory fac) { | |
| 42 this.jvf = jvf; | |
| 43 this.factory = fac; | |
| 44 } | |
| 45 | |
| 46 public Object get(String name) { | |
| 47 int fieldID = getFieldID(name); | |
| 48 switch (fieldID) { | |
| 49 case FIELD_METHOD: | |
| 50 return getMethod(); | |
| 51 case FIELD_BCI: | |
| 52 return new Integer(getBCI()); | |
| 53 case FIELD_LINE_NUMBER: | |
| 54 return new Integer(getLineNumber()); | |
| 55 case FIELD_LOCALS: | |
| 56 return getLocals(); | |
| 57 case FIELD_THIS_OBJECT: | |
| 58 return getThisObject(); | |
| 59 case FIELD_THREAD: | |
| 60 return getThread(); | |
| 61 case FIELD_UNDEFINED: | |
| 62 default: | |
| 63 return super.get(name); | |
| 64 } | |
| 65 } | |
| 66 | |
| 67 public Object[] getIds() { | |
| 68 Object[] fieldNames = fields.keySet().toArray(); | |
| 69 Object[] superFields = super.getIds(); | |
| 70 Object[] res = new Object[fieldNames.length + superFields.length]; | |
| 71 System.arraycopy(fieldNames, 0, res, 0, fieldNames.length); | |
| 72 System.arraycopy(superFields, 0, res, fieldNames.length, superFields.length); | |
| 73 return res; | |
| 74 } | |
| 75 | |
| 76 public boolean has(String name) { | |
| 77 if (getFieldID(name) != FIELD_UNDEFINED) { | |
| 78 return true; | |
| 79 } else { | |
| 80 return super.has(name); | |
| 81 } | |
| 82 } | |
| 83 | |
| 84 public void put(String name, Object value) { | |
| 85 if (getFieldID(name) == FIELD_UNDEFINED) { | |
| 86 super.put(name, value); | |
| 87 } | |
| 88 } | |
| 89 | |
| 90 public String toString() { | |
| 91 StringBuffer buf = new StringBuffer(); | |
| 92 buf.append("Frame (method="); | |
| 93 buf.append(jvf.getMethod().externalNameAndSignature()); | |
| 94 buf.append(", bci="); | |
| 95 buf.append(getBCI()); | |
| 96 buf.append(", line="); | |
| 97 buf.append(getLineNumber()); | |
| 98 buf.append(')'); | |
| 99 return buf.toString(); | |
| 100 } | |
| 101 | |
| 102 //-- Internals only below this point | |
| 103 private static Map fields = new HashMap(); | |
| 104 private static void addField(String name, int fieldId) { | |
| 105 fields.put(name, new Integer(fieldId)); | |
| 106 } | |
| 107 | |
| 108 private static int getFieldID(String name) { | |
| 109 Integer res = (Integer) fields.get(name); | |
| 110 return (res != null)? res.intValue() : FIELD_UNDEFINED; | |
| 111 } | |
| 112 | |
| 113 static { | |
| 114 addField("method", FIELD_METHOD); | |
| 115 addField("bci", FIELD_BCI); | |
| 116 addField("line", FIELD_LINE_NUMBER); | |
| 117 addField("locals", FIELD_LOCALS); | |
| 118 addField("thisObject", FIELD_THIS_OBJECT); | |
| 119 addField("thread", FIELD_THREAD); | |
| 120 } | |
| 121 | |
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6964458: Reimplement class meta-data storage to use native memory
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parents:
6070
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122 private JSJavaMethod getMethod() { |
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da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6070
diff
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123 return factory.newJSJavaMethod(jvf.getMethod()); |
| 0 | 124 } |
| 125 | |
| 126 private int getBCI() { | |
| 127 return jvf.getBCI(); | |
| 128 } | |
| 129 | |
| 130 private int getLineNumber() { | |
| 131 int bci = jvf.getBCI(); | |
| 132 if (bci == -1) { | |
| 133 return 0; | |
| 134 } else { | |
| 135 int lineNum = jvf.getMethod().getLineNumberFromBCI(bci); | |
| 136 return (lineNum <= 0)? 0 : lineNum; | |
| 137 } | |
| 138 } | |
| 139 | |
| 140 private synchronized JSMap getLocals() { | |
| 141 if (localsCache == null) { | |
| 142 Map map = new HashMap(); | |
| 143 localsCache = factory.newJSMap(map); | |
| 144 StackValueCollection values = jvf.getLocals(); | |
| 145 Method method = jvf.getMethod(); | |
| 146 if (method.isNative() || ! method.hasLocalVariableTable() || | |
| 147 values == null) { | |
| 148 return localsCache; | |
| 149 } | |
| 150 | |
| 151 LocalVariableTableElement[] localVars = method.getLocalVariableTable(); | |
| 152 int bci = getBCI(); | |
| 153 List visibleVars = new ArrayList(0); | |
| 154 for (int i = 0; i < localVars.length; i++) { | |
| 155 LocalVariableTableElement cur = localVars[i]; | |
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7162726: Wrong filter predicate of visible locals in SA JSJavaFrame
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156 int startBCI = cur.getStartBCI(); |
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0251d217257f
7162726: Wrong filter predicate of visible locals in SA JSJavaFrame
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157 if (startBCI <= bci && bci < startBCI + cur.getLength()) { |
| 0 | 158 visibleVars.add(cur); |
| 159 } | |
| 160 } | |
| 161 | |
| 162 OopHandle handle = null; | |
| 163 ObjectHeap heap = VM.getVM().getObjectHeap(); | |
| 164 for (Iterator varItr = visibleVars.iterator(); varItr.hasNext();) { | |
| 165 LocalVariableTableElement cur = (LocalVariableTableElement) varItr.next(); | |
| 166 String name = method.getConstants().getSymbolAt(cur.getNameCPIndex()).asString(); | |
| 167 int slot = cur.getSlot(); | |
| 168 | |
| 169 String signature = method.getConstants().getSymbolAt(cur.getDescriptorCPIndex()).asString(); | |
| 170 BasicType variableType = BasicType.charToBasicType(signature.charAt(0)); | |
| 171 Object value = null; | |
| 172 if (variableType == BasicType.T_BOOLEAN) { | |
| 173 value = Boolean.valueOf(values.booleanAt(slot)); | |
| 174 } else if (variableType == BasicType.T_CHAR) { | |
| 175 value = new Character(values.charAt(slot)); | |
| 176 } else if (variableType == BasicType.T_FLOAT) { | |
| 177 value = new Float(values.floatAt(slot)); | |
| 178 } else if (variableType == BasicType.T_DOUBLE) { | |
| 179 value = new Double(values.doubleAt(slot)); | |
| 180 } else if (variableType == BasicType.T_BYTE) { | |
| 181 value = new Byte(values.byteAt(slot)); | |
| 182 } else if (variableType == BasicType.T_SHORT) { | |
| 183 value = new Short(values.shortAt(slot)); | |
| 184 } else if (variableType == BasicType.T_INT) { | |
| 185 value = new Integer(values.intAt(slot)); | |
| 186 } else if (variableType == BasicType.T_LONG) { | |
| 187 value = new Long(values.longAt(slot)); | |
| 188 } else if (variableType == BasicType.T_OBJECT || | |
| 189 variableType == BasicType.T_ARRAY) { | |
| 190 handle = values.oopHandleAt(slot); | |
| 191 value = factory.newJSJavaObject(heap.newOop(handle)); | |
| 192 } else { | |
| 193 // ignore | |
| 194 } | |
| 195 map.put(name, value); | |
| 196 } | |
| 197 } | |
| 198 return localsCache; | |
| 199 } | |
| 200 | |
| 201 private JSJavaObject getThisObject() { | |
| 202 Method method = jvf.getMethod(); | |
| 203 if (method.isStatic()) { | |
| 204 return null; | |
| 205 } | |
| 206 StackValueCollection values = jvf.getLocals(); | |
| 207 if (values != null) { | |
| 208 // 'this' at index 0. | |
| 209 OopHandle handle = values.oopHandleAt(0); | |
| 210 ObjectHeap heap = VM.getVM().getObjectHeap(); | |
| 211 return factory.newJSJavaObject(heap.newOop(handle)); | |
| 212 } else { | |
| 213 // can't get locals, return null. | |
| 214 return null; | |
| 215 } | |
| 216 } | |
| 217 | |
| 218 private JSJavaThread getThread() { | |
| 219 return factory.newJSJavaThread(jvf.getThread()); | |
| 220 } | |
| 221 | |
| 222 private final JavaVFrame jvf; | |
| 223 private final JSJavaFactory factory; | |
| 224 private JSMap localsCache; | |
| 225 } |