Mercurial > hg > truffle
annotate agent/test/jdi/sagdoit.java @ 20543:e7d0505c8a30
8059758: Footprint regressions with JDK-8038423
Summary: Changes in JDK-8038423 always initialize (zero out) virtual memory used for auxiliary data structures. This causes a footprint regression for G1 in startup benchmarks. This is because they do not touch that memory at all, so the operating system does not actually commit these pages. The fix is to, if the initialization value of the data structures matches the default value of just committed memory (=0), do not do anything.
Reviewed-by: jwilhelm, brutisso
| author | tschatzl |
|---|---|
| date | Fri, 10 Oct 2014 15:51:58 +0200 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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2 * Copyright (c) 2002, 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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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 import com.sun.jdi.*; | |
| 26 import java.util.*; | |
| 27 | |
| 28 | |
| 29 // This just contains a bunch of methods that call various JDI methods. | |
| 30 // It is called from the sagtest.java jtreg test to get this info for the standard | |
| 31 // JDI and from the sagclient.java test to get this info for the SA JDI. | |
| 32 | |
| 33 class comparator implements Comparator { | |
| 34 | |
| 35 public int compare(Object o1, Object o2) { | |
| 36 ReferenceType rt1 = (ReferenceType)o1; | |
| 37 ReferenceType rt2 = (ReferenceType)o2; | |
| 38 return rt1.signature().compareTo(rt2.signature()); | |
| 39 } | |
| 40 | |
| 41 public boolean equals(Object oo) { | |
| 42 return false; | |
| 43 } | |
| 44 } | |
| 45 | |
| 46 public class sagdoit { | |
| 47 | |
| 48 VirtualMachine myVm; | |
| 49 int margin = 0; | |
| 50 static String blanks = " "; | |
| 51 static int nblanks = blanks.length(); | |
| 52 | |
| 53 sagdoit(VirtualMachine vm) { | |
| 54 super(); | |
| 55 myVm = vm; | |
| 56 } | |
| 57 | |
| 58 void indent(int count) { | |
| 59 margin += count; | |
| 60 } | |
| 61 | |
| 62 void pp(String msg) { | |
| 63 System.out.println(blanks.substring(nblanks - margin) + msg); | |
| 64 } | |
| 65 | |
| 66 public void doAll() { | |
| 67 doThreadGroups(); | |
| 68 //System.out.println("NOTE: dumping of class info is disabled in sagdoit.java"); | |
| 69 //System.out.println(" just to keep the output small while working on objects"); | |
| 70 doClasses(); //fixme jj: uncomment this to see all class info | |
| 71 | |
| 72 } | |
| 73 public void doThreadGroups() { | |
| 74 doThreadGroupList(myVm.topLevelThreadGroups()); | |
| 75 } | |
| 76 | |
| 77 private void doThreadGroupList(List groups) { | |
| 78 // sort; need a comparator | |
| 79 if (groups == null) { | |
| 80 return; | |
| 81 } | |
| 82 | |
| 83 Iterator myIter = groups.iterator(); | |
| 84 while(myIter.hasNext()) { | |
| 85 ThreadGroupReference aGroup = (ThreadGroupReference)myIter.next(); | |
| 86 doOneThreadGroup(aGroup); | |
| 87 } | |
| 88 | |
| 89 } | |
| 90 | |
| 91 public void doOneThreadGroup(ThreadGroupReference xx) { | |
| 92 pp("threadGroup:" + xx.name()); | |
| 93 indent(4); | |
| 94 pp("parent() = " + xx.parent()); | |
| 95 pp("threads:"); | |
| 96 indent(4); | |
| 97 doThreadList(xx.threads()); | |
| 98 indent(-4); | |
| 99 pp("threadGroups:"); | |
| 100 indent(4); | |
| 101 doThreadGroupList(xx.threadGroups()); | |
| 102 indent(-4); | |
| 103 indent(-4); | |
| 104 } | |
| 105 | |
| 106 public void doThreads() { | |
| 107 doThreadList(myVm.allThreads()); | |
| 108 } | |
| 109 | |
| 110 public void doThreadList(List threads) { | |
| 111 if (threads == null) { | |
| 112 return; | |
| 113 } | |
| 114 Iterator myIter = threads.iterator(); | |
| 115 while(myIter.hasNext()) { | |
| 116 ThreadReference aThread = (ThreadReference)myIter.next(); | |
| 117 doOneThread(aThread); | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 public void doOneThread(ThreadReference xx) { | |
| 122 pp("Thread: " + xx.name()); | |
| 123 indent(4); | |
| 124 pp("suspendCount() = " + xx.suspendCount()); | |
| 125 | |
| 126 //void stop(ObjectReference throwable) throws InvalidTypeException; | |
| 127 //void interrupt(); | |
| 128 pp("status() = " + xx.status()); | |
| 129 pp("isSuspended() = " + xx.isSuspended()); | |
| 130 pp("isAtBreakpoint() = " + xx.isAtBreakpoint()); | |
| 131 | |
| 132 pp("threadGroup() = " + xx.threadGroup()); | |
| 133 indent(-4); | |
| 134 | |
| 135 indent(4); | |
| 136 try { | |
| 137 List allFrames = xx.frames(); | |
| 138 for (int ii = 0; ii < xx.frameCount(); ii++) { | |
| 139 StackFrame oneFrame = xx.frame(ii); | |
| 140 pp("frame(" + ii + ") = " + oneFrame); | |
| 141 doOneFrame(oneFrame); | |
| 142 } | |
| 143 //List frames(int start, int length) throws IncompatibleThreadStateException; | |
| 144 // unsupported List allMonitors = xx.ownedMonitors(); | |
| 145 // unsupported pp("currentContendedMonitor() = " + xx.currentContendedMonitor()); | |
| 146 } catch (IncompatibleThreadStateException ee) { | |
| 147 pp("GOT IncompatibleThreadStateException: " + ee); | |
| 148 } | |
| 149 indent(-4); | |
| 150 } | |
| 151 | |
| 152 public void doOneFrame(StackFrame frame) { | |
| 153 | |
| 154 List localVars = null; | |
| 155 try { | |
| 156 localVars = frame.visibleVariables(); | |
| 157 } catch (AbsentInformationException ee) { | |
| 158 // we compile with -g so this shouldn't happen | |
| 159 return; | |
| 160 } | |
| 161 indent(4); | |
| 162 for (Iterator it = localVars.iterator(); it.hasNext();) { | |
| 163 LocalVariable lv = (LocalVariable) it.next(); | |
| 164 pp("lv name = " + lv.name() + | |
| 165 ", type = " + lv.typeName() + | |
| 166 ", sig = " + lv.signature() + | |
| 167 ", gsig = " + lv.genericSignature() + | |
| 168 ", isVis = " + lv.isVisible(frame) + | |
| 169 ", isArg = " + lv.isArgument()); | |
| 170 } | |
| 171 indent(-4); | |
| 172 } | |
| 173 | |
| 174 public void doClasses() { | |
| 175 List myClasses = myVm.allClasses(); | |
| 176 myClasses = new ArrayList(myClasses); | |
| 177 Collections.sort(myClasses, new comparator()); | |
| 178 for (int ii = 0; ii < myClasses.size(); ii++) { | |
| 179 // Spec says each is a ReferenceType | |
| 180 //System.out.println("class " + (ii + 1) + " is " + myClasses.get(ii)); | |
| 181 ReferenceType aClass = (ReferenceType)myClasses.get(ii); | |
| 182 System.out.println("class " + (ii + 1) + " is " + aClass.signature()); | |
| 183 doOneClass(aClass); | |
| 184 // Uncomment this to just do a few classes. | |
| 185 //if ( ii > 4) break; | |
| 186 } | |
| 187 } | |
| 188 | |
| 189 public void doOneClass(ReferenceType xx) { | |
| 190 indent(5); | |
| 191 // inherited from Mirror | |
| 192 pp("toString() = " + xx.toString()); | |
| 193 pp("virtualMachine() = " + xx.virtualMachine()); | |
| 194 | |
| 195 // inherited from Type | |
| 196 pp("name() = " + xx.name()); | |
| 197 pp("signature() = " + xx.signature()); | |
| 198 | |
| 199 // ReferenceType fields | |
| 200 doReferenceTypeFields(xx); | |
| 201 | |
| 202 | |
| 203 | |
| 204 | |
| 205 | |
| 206 String className = xx.getClass().getName(); | |
| 207 pp("subclass = " + className); | |
| 208 | |
| 209 Class referenceType = null; | |
| 210 Class arrayType = null; | |
| 211 Class classType = null; | |
| 212 Class interfaceType = null; | |
| 213 | |
| 214 try { | |
| 215 referenceType = Class.forName("com.sun.jdi.ReferenceType"); | |
| 216 arrayType = Class.forName("com.sun.jdi.ArrayType"); | |
| 217 interfaceType = Class.forName("com.sun.jdi.InterfaceType"); | |
| 218 classType = Class.forName("com.sun.jdi.ClassType"); | |
| 219 } catch (ClassNotFoundException ee) { | |
| 220 } | |
| 221 | |
| 222 | |
| 223 if (referenceType.isInstance(xx)) { | |
| 224 pp("ReferenceType fields"); | |
| 225 ReferenceType rr = (ReferenceType)xx; | |
| 226 | |
| 227 if (arrayType.isInstance(xx)) { | |
| 228 pp("ArrayType fields"); | |
| 229 } | |
| 230 | |
| 231 if (classType.isInstance(xx)) { | |
| 232 pp("ClassType fields"); | |
| 233 } | |
| 234 | |
| 235 if (interfaceType.isInstance(xx)) { | |
| 236 pp("InterfaceType fields"); | |
| 237 } | |
| 238 } | |
| 239 indent(-5); | |
| 240 | |
| 241 } | |
| 242 | |
| 243 | |
| 244 public void doReferenceTypeFields(ReferenceType xx) { | |
| 245 Object zz; | |
| 246 pp("classLoader() = " + xx.classLoader()); | |
| 247 try {zz =xx.sourceName();} catch(AbsentInformationException ee) { zz = ee;} pp("sourceName() = " + zz); | |
| 248 try {zz =xx.sourceNames("stratum");} catch(AbsentInformationException ee) { zz = ee;} pp("sourceNames() = " + zz); | |
| 249 try {zz =xx.sourcePaths("stratum");} catch(AbsentInformationException ee) { zz = ee;} pp("sourcePaths() = " + zz); | |
| 250 //try {zz =xx.sourceDebugExtension();} catch(AbsentInformationException ee) { zz = ee;} pp("sourceDebugExtension() = " + zz); | |
| 251 //fixme: jj; should sourceDebugExtension throw UnsupportedOperationException? | |
| 252 try {zz =xx.sourceDebugExtension();} catch(Exception ee) { zz = ee;} pp("sourceDebugExtension() = " + zz); | |
| 253 // If xx is an array, this can cause a ClassNotLoadedException on the | |
| 254 // component type. Is that a JDI bug? | |
| 255 pp("isStatic() = " + xx.isStatic()); | |
| 256 pp("isAbstract() = " + xx.isAbstract()); | |
| 257 pp("isFinal() = " + xx.isFinal()); | |
| 258 pp("isPrepared() = " + xx.isPrepared()); | |
| 259 pp("isVerified() = " + xx.isVerified()); | |
| 260 pp("isInitialized() = " + xx.isInitialized()); | |
| 261 pp("failedToInitialize() = " + xx.failedToInitialize()); | |
| 262 pp("fields() = " + xx.fields()); | |
| 263 pp("visibleFields() = " + xx.visibleFields()); | |
| 264 pp("allFields() = " + xx.allFields()); | |
| 265 pp("fieldByName(String fieldName) = " + xx.fieldByName("fieldName")); | |
| 266 pp("methods() = " + xx.methods()); | |
| 267 | |
| 268 | |
| 269 List meths = xx.methods(); | |
| 270 Iterator iter = meths.iterator(); | |
| 271 while (iter.hasNext()) { | |
| 272 Method mm = (Method)iter.next(); | |
| 273 pp(" name/sig:" + mm.name() + "/" + mm.signature()); | |
| 274 } | |
| 275 | |
| 276 pp(" visibleMethods() = " + xx.visibleMethods()); | |
| 277 | |
| 278 //if (1 == 1) return; | |
| 279 | |
| 280 pp("allMethods() = " + xx.allMethods()); | |
| 281 | |
| 282 | |
| 283 pp("methodsByName(String name) = " + xx.methodsByName("name")); | |
| 284 pp("methodsByName(String name, String signature) = " + xx.methodsByName("name", "signature")); | |
| 285 pp("nestedTypes() = " + xx.nestedTypes()); | |
| 286 //pp("getValue(Field field) = " + xx.getValue("field")); | |
| 287 pp("getValue(Field field) = " + "fixme: jjh"); | |
| 288 //pp("getValues(List fields) = " + xx.getValues(new List[] = {"fields"})); | |
| 289 pp("getValues(List fields) = " + "fixme: jjh"); | |
| 290 pp("classObject() = " + xx.classObject()); | |
| 291 //x pp("allLineLocations() = " + xx.allLineLocations()); | |
| 292 //x pp("allLineLocations(String stratum, String sourceName) = " + xx.allLineLocations("stratum", "sourceName")); | |
| 293 //x pp("locationsOfLine(int lineNumber) = " + xx.locationsOfLine(89)); | |
| 294 //x pp("locationsOfLine(String stratum, String sourceName, int lineNumber) = " + xx.locationsOfLine("stratum", "sourceName", 89)); | |
| 295 pp("availableStrata() = " + xx.availableStrata()); | |
| 296 pp("defaultStratum() = " + xx.defaultStratum()); | |
| 297 pp("equals(Object obj) = " + xx.equals(xx)); | |
| 298 pp("hashCode() = " + xx.hashCode()); | |
| 299 } | |
| 300 | |
| 301 } | |
| 302 | |
| 303 // try { | |
| 304 // ReferenceType rr = (ReferenceType)xx; | |
| 305 // pp("ReferenceType fields"); | |
| 306 | |
| 307 // try { | |
| 308 // ArrayType ff = (ArrayType)xx; | |
| 309 // pp("ArrayType fields"); | |
| 310 | |
| 311 // } catch(ClassCastException ee) { | |
| 312 // } | |
| 313 | |
| 314 // try { | |
| 315 // ClassType ff = (ClassType)xx; | |
| 316 // pp("ClassType fields"); | |
| 317 | |
| 318 // } catch(ClassCastException ee) { | |
| 319 // } | |
| 320 | |
| 321 // try { | |
| 322 // InterfaceType ff = (InterfaceType)xx; | |
| 323 // pp("InterfaceType fields"); | |
| 324 | |
| 325 // } catch(ClassCastException ee) { | |
| 326 // } | |
| 327 | |
| 328 // } catch(ClassCastException ee) { | |
| 329 // } |