Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/tools/PermStat.java @ 337:9ee9cf798b59 jdk7-b37
6754988: Update copyright year
Summary: Update for files that have been modified starting July 2008
Reviewed-by: ohair, tbell
| author | xdono |
|---|---|
| date | Thu, 02 Oct 2008 19:58:19 -0700 |
| parents | 7f601f7c9b48 |
| children | c18cbe5936b8 |
| rev | line source |
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| 0 | 1 /* |
| 337 | 2 * Copyright 2003-2008 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.tools; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 | |
| 30 import sun.jvm.hotspot.debugger.*; | |
| 31 import sun.jvm.hotspot.memory.*; | |
| 32 import sun.jvm.hotspot.oops.*; | |
| 33 import sun.jvm.hotspot.runtime.*; | |
| 34 import sun.jvm.hotspot.tools.*; | |
| 35 import sun.jvm.hotspot.utilities.*; | |
| 36 | |
| 37 /** | |
| 38 A command line tool to print perm. generation statistics. | |
| 39 */ | |
| 40 | |
| 41 public class PermStat extends Tool { | |
| 42 boolean verbose = true; | |
| 43 | |
| 44 public static void main(String[] args) { | |
| 45 PermStat ps = new PermStat(); | |
| 46 ps.start(args); | |
| 47 ps.stop(); | |
| 48 } | |
| 49 | |
| 50 private static class ClassData { | |
| 51 Klass klass; | |
| 52 long size; | |
| 53 | |
| 54 ClassData(Klass klass, long size) { | |
| 55 this.klass = klass; this.size = size; | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 private static class LoaderData { | |
| 60 long numClasses; | |
| 61 long classSize; | |
| 62 List classDetail = new ArrayList(); // List<ClassData> | |
| 63 } | |
| 64 | |
| 65 public void run() { | |
| 66 printInternStringStatistics(); | |
| 67 printClassLoaderStatistics(); | |
| 68 } | |
| 69 | |
| 70 private void printInternStringStatistics() { | |
| 71 class StringStat implements StringTable.StringVisitor { | |
| 72 private int count; | |
| 73 private long size; | |
| 74 private OopField stringValueField; | |
| 75 | |
| 76 StringStat() { | |
| 77 VM vm = VM.getVM(); | |
| 78 SystemDictionary sysDict = vm.getSystemDictionary(); | |
| 79 InstanceKlass strKlass = sysDict.getStringKlass(); | |
| 80 // String has a field named 'value' of type 'char[]'. | |
| 81 stringValueField = (OopField) strKlass.findField("value", "[C"); | |
| 82 } | |
| 83 | |
| 84 private long stringSize(Instance instance) { | |
| 85 // We include String content in size calculation. | |
| 86 return instance.getObjectSize() + | |
| 87 stringValueField.getValue(instance).getObjectSize(); | |
| 88 } | |
| 89 | |
| 90 public void visit(Instance str) { | |
| 91 count++; | |
| 92 size += stringSize(str); | |
| 93 } | |
| 94 | |
| 95 public void print() { | |
| 96 System.out.println(count + | |
| 97 " intern Strings occupying " + size + " bytes."); | |
| 98 } | |
| 99 } | |
| 100 | |
| 101 StringStat stat = new StringStat(); | |
| 102 StringTable strTable = VM.getVM().getStringTable(); | |
| 103 strTable.stringsDo(stat); | |
| 104 stat.print(); | |
| 105 } | |
| 106 | |
| 107 private void printClassLoaderStatistics() { | |
| 108 final PrintStream out = System.out; | |
| 109 final PrintStream err = System.err; | |
| 110 final Map loaderMap = new HashMap(); | |
| 111 // loader data for bootstrap class loader | |
| 112 final LoaderData bootstrapLoaderData = new LoaderData(); | |
| 113 if (verbose) { | |
| 114 err.print("finding class loader instances .."); | |
| 115 } | |
| 116 | |
| 117 VM vm = VM.getVM(); | |
| 118 ObjectHeap heap = vm.getObjectHeap(); | |
| 119 Klass classLoaderKlass = vm.getSystemDictionary().getClassLoaderKlass(); | |
| 120 try { | |
| 121 heap.iterateObjectsOfKlass(new DefaultHeapVisitor() { | |
| 122 public boolean doObj(Oop oop) { | |
| 123 loaderMap.put(oop, new LoaderData()); | |
| 124 return false; | |
| 125 } | |
| 126 }, classLoaderKlass); | |
| 127 } catch (Exception se) { | |
| 128 se.printStackTrace(); | |
| 129 } | |
| 130 | |
| 131 if (verbose) { | |
| 132 err.println("done."); | |
| 133 err.print("computing per loader stat .."); | |
| 134 } | |
| 135 | |
| 136 SystemDictionary dict = VM.getVM().getSystemDictionary(); | |
| 137 dict.classesDo(new SystemDictionary.ClassAndLoaderVisitor() { | |
| 138 public void visit(Klass k, Oop loader) { | |
| 139 if (! (k instanceof InstanceKlass)) { | |
| 140 return; | |
| 141 } | |
| 142 LoaderData ld = (loader != null) ? (LoaderData)loaderMap.get(loader) | |
| 143 : bootstrapLoaderData; | |
| 144 if (ld != null) { | |
| 145 ld.numClasses++; | |
| 146 long size = computeSize((InstanceKlass)k); | |
| 147 ld.classDetail.add(new ClassData(k, size)); | |
| 148 ld.classSize += size; | |
| 149 } | |
| 150 } | |
| 151 }); | |
| 152 | |
| 153 if (verbose) { | |
| 154 err.println("done."); | |
| 155 err.print("please wait.. computing liveness"); | |
| 156 } | |
| 157 | |
| 158 // compute reverse pointer analysis (takes long time for larger app) | |
| 159 ReversePtrsAnalysis analysis = new ReversePtrsAnalysis(); | |
| 160 | |
| 161 if (verbose) { | |
| 162 analysis.setHeapProgressThunk(new HeapProgressThunk() { | |
| 163 public void heapIterationFractionUpdate(double fractionOfHeapVisited) { | |
| 164 err.print('.'); | |
| 165 } | |
| 166 // This will be called after the iteration is complete | |
| 167 public void heapIterationComplete() { | |
| 168 err.println("done."); | |
| 169 } | |
| 170 }); | |
| 171 } | |
| 172 | |
| 173 try { | |
| 174 analysis.run(); | |
| 175 } catch (Exception e) { | |
| 176 // e.printStackTrace(); | |
| 177 if (verbose) | |
| 178 err.println("liveness analysis may be inaccurate ..."); | |
| 179 } | |
| 180 ReversePtrs liveness = VM.getVM().getRevPtrs(); | |
| 181 | |
| 182 out.println("class_loader\tclasses\tbytes\tparent_loader\talive?\ttype"); | |
| 183 out.println(); | |
| 184 | |
| 185 long numClassLoaders = 1L; | |
| 186 long totalNumClasses = bootstrapLoaderData.numClasses; | |
| 187 long totalClassSize = bootstrapLoaderData.classSize; | |
| 188 long numAliveLoaders = 1L; | |
| 189 long numDeadLoaders = 0L; | |
| 190 | |
| 191 // print bootstrap loader details | |
| 192 out.print("<bootstrap>"); | |
| 193 out.print('\t'); | |
| 194 out.print(bootstrapLoaderData.numClasses); | |
| 195 out.print('\t'); | |
| 196 out.print(bootstrapLoaderData.classSize); | |
| 197 out.print('\t'); | |
| 198 out.print(" null "); | |
| 199 out.print('\t'); | |
| 200 // bootstrap loader is always alive | |
| 201 out.print("live"); | |
| 202 out.print('\t'); | |
| 203 out.println("<internal>"); | |
| 204 | |
| 205 for (Iterator keyItr = loaderMap.keySet().iterator(); keyItr.hasNext();) { | |
| 206 Oop loader = (Oop) keyItr.next(); | |
| 207 LoaderData data = (LoaderData) loaderMap.get(loader); | |
| 208 numClassLoaders ++; | |
| 209 totalNumClasses += data.numClasses; | |
| 210 totalClassSize += data.classSize; | |
| 211 | |
| 212 out.print(loader.getHandle()); | |
| 213 out.print('\t'); | |
| 214 out.print(data.numClasses); | |
| 215 out.print('\t'); | |
| 216 out.print(data.classSize); | |
| 217 out.print('\t'); | |
| 218 | |
| 219 class ParentFinder extends DefaultOopVisitor { | |
| 220 public void doOop(OopField field, boolean isVMField) { | |
| 221 if (field.getID().getName().equals("parent")) { | |
| 222 parent = field.getValue(getObj()); | |
| 223 } | |
| 224 } | |
| 225 private Oop parent = null; | |
| 226 public Oop getParent() { return parent; } | |
| 227 } | |
| 228 | |
| 229 ParentFinder parentFinder = new ParentFinder(); | |
| 230 loader.iterate(parentFinder, false); | |
| 231 Oop parent = parentFinder.getParent(); | |
| 232 out.print((parent != null)? parent.getHandle().toString() : " null "); | |
| 233 out.print('\t'); | |
| 234 boolean alive = (liveness != null) ? (liveness.get(loader) != null) : true; | |
| 235 out.print(alive? "live" : "dead"); | |
| 236 if (alive) numAliveLoaders++; else numDeadLoaders++; | |
| 237 out.print('\t'); | |
| 238 Klass loaderKlass = loader.getKlass(); | |
| 239 if (loaderKlass != null) { | |
| 240 out.print(loaderKlass.getName().asString()); | |
| 241 out.print('@'); | |
| 242 out.print(loader.getKlass().getHandle()); | |
| 243 } else { | |
| 244 out.print(" null! "); | |
| 245 } | |
| 246 out.println(); | |
| 247 } | |
| 248 | |
| 249 out.println(); | |
| 250 // summary line | |
| 251 out.print("total = "); | |
| 252 out.print(numClassLoaders); | |
| 253 out.print('\t'); | |
| 254 out.print(totalNumClasses); | |
| 255 out.print('\t'); | |
| 256 out.print(totalClassSize); | |
| 257 out.print('\t'); | |
| 258 out.print(" N/A "); | |
| 259 out.print('\t'); | |
| 260 out.print("alive="); | |
| 261 out.print(numAliveLoaders); | |
| 262 out.print(", dead="); | |
| 263 out.print(numDeadLoaders); | |
| 264 out.print('\t'); | |
| 265 out.print(" N/A "); | |
| 266 out.println(); | |
| 267 } | |
| 268 | |
|
261
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269 private static long objectSize(Oop oop) { |
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270 return oop == null ? 0L : oop.getObjectSize(); |
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271 } |
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272 |
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273 // Don't count the shared empty arrays |
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274 private static long arraySize(Array arr) { |
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275 return arr.getLength() != 0L ? arr.getObjectSize() : 0L; |
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276 } |
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277 |
| 0 | 278 private long computeSize(InstanceKlass k) { |
| 279 long size = 0L; | |
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280 // the InstanceKlass object itself |
| 0 | 281 size += k.getObjectSize(); |
| 282 | |
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283 // Constant pool |
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284 ConstantPool cp = k.getConstants(); |
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285 size += cp.getObjectSize(); |
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286 size += objectSize(cp.getCache()); |
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287 size += objectSize(cp.getTags()); |
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288 |
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289 // Interfaces |
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290 size += arraySize(k.getLocalInterfaces()); |
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291 size += arraySize(k.getTransitiveInterfaces()); |
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292 |
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293 // Inner classes |
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294 size += objectSize(k.getInnerClasses()); |
| 0 | 295 |
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296 // Fields |
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297 size += objectSize(k.getFields()); |
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298 |
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299 // Methods |
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300 ObjArray methods = k.getMethods(); |
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301 int nmethods = (int) methods.getLength(); |
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302 if (nmethods != 0L) { |
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303 size += methods.getObjectSize(); |
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304 for (int i = 0; i < nmethods; ++i) { |
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305 Method m = (Method) methods.getObjAt(i); |
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306 size += m.getObjectSize(); |
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307 size += objectSize(m.getConstMethod()); |
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308 } |
| 0 | 309 } |
| 310 | |
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311 // MethodOrdering - an int array that records the original |
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312 // ordering of methods in the class file |
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313 size += arraySize(k.getMethodOrdering()); |
| 0 | 314 |
| 315 return size; | |
| 316 } | |
| 317 } |