Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/AbstractHeapGraphWriter.java @ 17524:89152779163c
Merge with jdk8-b132
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Wed, 15 Oct 2014 11:59:32 +0200 |
| parents | 4ca6dc0799b6 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 17524 | 2 * Copyright (c) 2004, 2013, 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; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import sun.jvm.hotspot.debugger.*; | |
| 29 import sun.jvm.hotspot.memory.*; | |
| 30 import sun.jvm.hotspot.oops.*; | |
| 31 import sun.jvm.hotspot.runtime.*; | |
| 32 | |
| 33 /** | |
| 34 * This is abstract base class for heap graph writers. This class does | |
| 35 * not assume any file format for the heap graph. It hides heap | |
| 36 * iteration, object (fields) iteration mechanism from derived | |
| 37 * classes. This class does not even accept OutputStream etc. so that | |
| 38 * derived class can construct specific writer/filter from input | |
| 39 * stream. | |
| 40 */ | |
| 41 | |
| 42 public abstract class AbstractHeapGraphWriter implements HeapGraphWriter { | |
| 43 // the function iterates heap and calls Oop type specific writers | |
| 44 protected void write() throws IOException { | |
| 45 SymbolTable symTbl = VM.getVM().getSymbolTable(); | |
| 46 javaLangClass = symTbl.probe("java/lang/Class"); | |
| 47 javaLangString = symTbl.probe("java/lang/String"); | |
| 48 javaLangThread = symTbl.probe("java/lang/Thread"); | |
| 49 ObjectHeap heap = VM.getVM().getObjectHeap(); | |
| 50 try { | |
| 51 heap.iterate(new DefaultHeapVisitor() { | |
| 52 public void prologue(long usedSize) { | |
| 53 try { | |
| 54 writeHeapHeader(); | |
| 55 } catch (IOException exp) { | |
| 56 throw new RuntimeException(exp); | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 public boolean doObj(Oop oop) { | |
| 61 try { | |
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62 writeHeapRecordPrologue(); |
| 0 | 63 if (oop instanceof TypeArray) { |
| 64 writePrimitiveArray((TypeArray)oop); | |
| 65 } else if (oop instanceof ObjArray) { | |
| 66 Klass klass = oop.getKlass(); | |
| 67 ObjArrayKlass oak = (ObjArrayKlass) klass; | |
| 68 Klass bottomType = oak.getBottomKlass(); | |
| 69 if (bottomType instanceof InstanceKlass || | |
| 70 bottomType instanceof TypeArrayKlass) { | |
| 71 writeObjectArray((ObjArray)oop); | |
| 72 } else { | |
| 73 writeInternalObject(oop); | |
| 74 } | |
| 75 } else if (oop instanceof Instance) { | |
| 76 Instance instance = (Instance) oop; | |
| 77 Klass klass = instance.getKlass(); | |
| 78 Symbol name = klass.getName(); | |
| 79 if (name.equals(javaLangString)) { | |
| 80 writeString(instance); | |
| 81 } else if (name.equals(javaLangClass)) { | |
| 82 writeClass(instance); | |
| 83 } else if (name.equals(javaLangThread)) { | |
| 84 writeThread(instance); | |
| 85 } else { | |
| 86 klass = klass.getSuper(); | |
| 87 while (klass != null) { | |
| 88 name = klass.getName(); | |
| 89 if (name.equals(javaLangThread)) { | |
| 90 writeThread(instance); | |
| 91 return false; | |
| 92 } | |
| 93 klass = klass.getSuper(); | |
| 94 } | |
| 95 writeInstance(instance); | |
| 96 } | |
| 97 } else { | |
| 98 // not-a-Java-visible oop | |
| 99 writeInternalObject(oop); | |
| 100 } | |
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101 writeHeapRecordEpilogue(); |
| 0 | 102 } catch (IOException exp) { |
| 103 throw new RuntimeException(exp); | |
| 104 } | |
| 105 return false; | |
| 106 } | |
| 107 | |
| 108 public void epilogue() { | |
| 109 try { | |
| 110 writeHeapFooter(); | |
| 111 } catch (IOException exp) { | |
| 112 throw new RuntimeException(exp); | |
| 113 } | |
| 114 } | |
| 115 }); | |
| 116 | |
| 117 // write JavaThreads | |
| 118 writeJavaThreads(); | |
| 119 | |
| 120 // write JNI global handles | |
| 121 writeGlobalJNIHandles(); | |
| 122 | |
| 123 } catch (RuntimeException re) { | |
| 124 handleRuntimeException(re); | |
| 125 } | |
| 126 } | |
| 127 | |
| 128 protected void writeJavaThreads() throws IOException { | |
| 129 Threads threads = VM.getVM().getThreads(); | |
| 130 JavaThread jt = threads.first(); | |
| 131 int index = 1; | |
| 132 while (jt != null) { | |
| 133 if (jt.getThreadObj() != null) { | |
| 134 // Note that the thread serial number range is 1-to-N | |
| 135 writeJavaThread(jt, index); | |
| 136 index++; | |
| 137 } | |
| 138 jt = jt.next(); | |
| 139 } | |
| 140 } | |
| 141 | |
| 142 protected void writeJavaThread(JavaThread jt, int index) | |
| 143 throws IOException { | |
| 144 } | |
| 145 | |
| 146 protected void writeGlobalJNIHandles() throws IOException { | |
| 147 JNIHandles handles = VM.getVM().getJNIHandles(); | |
| 148 JNIHandleBlock blk = handles.globalHandles(); | |
| 149 if (blk != null) { | |
| 150 try { | |
| 151 blk.oopsDo(new AddressVisitor() { | |
| 152 public void visitAddress(Address handleAddr) { | |
| 153 try { | |
| 154 if (handleAddr != null) { | |
| 155 writeGlobalJNIHandle(handleAddr); | |
| 156 } | |
| 157 } catch (IOException exp) { | |
| 158 throw new RuntimeException(exp); | |
| 159 } | |
| 160 } | |
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161 public void visitCompOopAddress(Address handleAddr) { |
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162 throw new RuntimeException("Should not reach here. JNIHandles are not compressed"); |
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163 } |
| 0 | 164 }); |
| 165 } catch (RuntimeException re) { | |
| 166 handleRuntimeException(re); | |
| 167 } | |
| 168 } | |
| 169 } | |
| 170 | |
| 171 protected void writeGlobalJNIHandle(Address handleAddr) throws IOException { | |
| 172 } | |
| 173 | |
| 174 protected void writeHeapHeader() throws IOException { | |
| 175 } | |
| 176 | |
| 177 // write non-Java-visible (hotspot internal) object | |
| 178 protected void writeInternalObject(Oop oop) throws IOException { | |
| 179 } | |
| 180 | |
| 181 // write Java primitive array | |
| 182 protected void writePrimitiveArray(TypeArray array) throws IOException { | |
| 183 writeObject(array); | |
| 184 } | |
| 185 | |
| 186 // write Java object array | |
| 187 protected void writeObjectArray(ObjArray array) throws IOException { | |
| 188 writeObject(array); | |
| 189 } | |
| 190 | |
| 191 protected void writeInstance(Instance instance) throws IOException { | |
| 192 writeObject(instance); | |
| 193 } | |
| 194 | |
| 195 protected void writeString(Instance instance) throws IOException { | |
| 196 writeInstance(instance); | |
| 197 } | |
| 198 | |
| 199 protected void writeClass(Instance instance) throws IOException { | |
| 200 writeInstance(instance); | |
| 201 } | |
| 202 | |
| 203 protected void writeThread(Instance instance) throws IOException { | |
| 204 writeInstance(instance); | |
| 205 } | |
| 206 | |
| 207 protected void writeObject(Oop oop) throws IOException { | |
| 208 writeObjectHeader(oop); | |
| 209 writeObjectFields(oop); | |
| 210 writeObjectFooter(oop); | |
| 211 } | |
| 212 | |
| 213 protected void writeObjectHeader(Oop oop) throws IOException { | |
| 214 } | |
| 215 | |
| 216 // write instance fields of given object | |
| 217 protected void writeObjectFields(final Oop oop) throws IOException { | |
| 218 try { | |
| 219 oop.iterate(new DefaultOopVisitor() { | |
| 220 public void doOop(OopField field, boolean isVMField) { | |
| 221 try { | |
| 222 writeReferenceField(oop, field); | |
| 223 } catch (IOException exp) { | |
| 224 throw new RuntimeException(exp); | |
| 225 } | |
| 226 } | |
| 227 | |
| 228 public void doByte(ByteField field, boolean isVMField) { | |
| 229 try { | |
| 230 writeByteField(oop, field); | |
| 231 } catch (IOException exp) { | |
| 232 throw new RuntimeException(exp); | |
| 233 } | |
| 234 } | |
| 235 | |
| 236 public void doChar(CharField field, boolean isVMField) { | |
| 237 try { | |
| 238 writeCharField(oop, field); | |
| 239 } catch (IOException exp) { | |
| 240 throw new RuntimeException(exp); | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 public void doBoolean(BooleanField field, boolean vField) { | |
| 245 try { | |
| 246 writeBooleanField(oop, field); | |
| 247 } catch (IOException exp) { | |
| 248 throw new RuntimeException(exp); | |
| 249 } | |
| 250 } | |
| 251 | |
| 252 public void doShort(ShortField field, boolean isVMField) { | |
| 253 try { | |
| 254 writeShortField(oop, field); | |
| 255 } catch (IOException exp) { | |
| 256 throw new RuntimeException(exp); | |
| 257 } | |
| 258 } | |
| 259 | |
| 260 public void doInt(IntField field, boolean isVMField) { | |
| 261 try { | |
| 262 writeIntField(oop, field); | |
| 263 } catch (IOException exp) { | |
| 264 throw new RuntimeException(exp); | |
| 265 } | |
| 266 } | |
| 267 | |
| 268 public void doLong(LongField field, boolean isVMField) { | |
| 269 try { | |
| 270 writeLongField(oop, field); | |
| 271 } catch (IOException exp) { | |
| 272 throw new RuntimeException(exp); | |
| 273 } | |
| 274 } | |
| 275 | |
| 276 public void doFloat(FloatField field, boolean isVMField) { | |
| 277 try { | |
| 278 writeFloatField(oop, field); | |
| 279 } catch (IOException exp) { | |
| 280 throw new RuntimeException(exp); | |
| 281 } | |
| 282 } | |
| 283 | |
| 284 public void doDouble(DoubleField field, boolean vField) { | |
| 285 try { | |
| 286 writeDoubleField(oop, field); | |
| 287 } catch (IOException exp) { | |
| 288 throw new RuntimeException(exp); | |
| 289 } | |
| 290 } | |
| 291 }, false); | |
| 292 } catch (RuntimeException re) { | |
| 293 handleRuntimeException(re); | |
| 294 } | |
| 295 } | |
| 296 | |
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297 // write instance fields of given object |
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298 protected void writeObjectFields(final InstanceKlass oop) throws IOException { |
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299 try { |
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300 oop.iterateStaticFields(new DefaultOopVisitor() { |
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301 public void doOop(OopField field, boolean isVMField) { |
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302 try { |
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303 writeReferenceField(null, field); |
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304 } catch (IOException exp) { |
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305 throw new RuntimeException(exp); |
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306 } |
| 0 | 307 } |
| 308 | |
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309 public void doByte(ByteField field, boolean isVMField) { |
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310 try { |
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311 writeByteField(null, field); |
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312 } catch (IOException exp) { |
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313 throw new RuntimeException(exp); |
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314 } |
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315 } |
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316 |
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317 public void doChar(CharField field, boolean isVMField) { |
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318 try { |
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319 writeCharField(null, field); |
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320 } catch (IOException exp) { |
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321 throw new RuntimeException(exp); |
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322 } |
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323 } |
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324 |
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325 public void doBoolean(BooleanField field, boolean vField) { |
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326 try { |
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327 writeBooleanField(null, field); |
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328 } catch (IOException exp) { |
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329 throw new RuntimeException(exp); |
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330 } |
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331 } |
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332 |
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333 public void doShort(ShortField field, boolean isVMField) { |
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334 try { |
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335 writeShortField(null, field); |
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336 } catch (IOException exp) { |
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337 throw new RuntimeException(exp); |
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338 } |
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339 } |
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340 |
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341 public void doInt(IntField field, boolean isVMField) { |
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342 try { |
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343 writeIntField(null, field); |
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344 } catch (IOException exp) { |
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345 throw new RuntimeException(exp); |
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346 } |
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347 } |
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348 |
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349 public void doLong(LongField field, boolean isVMField) { |
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350 try { |
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351 writeLongField(null, field); |
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352 } catch (IOException exp) { |
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353 throw new RuntimeException(exp); |
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354 } |
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355 } |
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356 |
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357 public void doFloat(FloatField field, boolean isVMField) { |
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358 try { |
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359 writeFloatField(null, field); |
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360 } catch (IOException exp) { |
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361 throw new RuntimeException(exp); |
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362 } |
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363 } |
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364 |
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365 public void doDouble(DoubleField field, boolean vField) { |
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366 try { |
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367 writeDoubleField(null, field); |
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368 } catch (IOException exp) { |
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369 throw new RuntimeException(exp); |
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370 } |
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371 } |
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372 }); |
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373 } catch (RuntimeException re) { |
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374 handleRuntimeException(re); |
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375 } |
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376 } |
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377 |
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378 // object field writers |
| 0 | 379 protected void writeReferenceField(Oop oop, OopField field) |
| 380 throws IOException { | |
| 381 } | |
| 382 | |
| 383 protected void writeByteField(Oop oop, ByteField field) | |
| 384 throws IOException { | |
| 385 } | |
| 386 | |
| 387 protected void writeCharField(Oop oop, CharField field) | |
| 388 throws IOException { | |
| 389 } | |
| 390 | |
| 391 protected void writeBooleanField(Oop oop, BooleanField field) | |
| 392 throws IOException { | |
| 393 } | |
| 394 | |
| 395 protected void writeShortField(Oop oop, ShortField field) | |
| 396 throws IOException { | |
| 397 } | |
| 398 | |
| 399 protected void writeIntField(Oop oop, IntField field) | |
| 400 throws IOException { | |
| 401 } | |
| 402 | |
| 403 protected void writeLongField(Oop oop, LongField field) | |
| 404 throws IOException { | |
| 405 } | |
| 406 | |
| 407 protected void writeFloatField(Oop oop, FloatField field) | |
| 408 throws IOException { | |
| 409 } | |
| 410 | |
| 411 protected void writeDoubleField(Oop oop, DoubleField field) | |
| 412 throws IOException { | |
| 413 } | |
| 414 | |
| 415 protected void writeObjectFooter(Oop oop) throws IOException { | |
| 416 } | |
| 417 | |
| 418 protected void writeHeapFooter() throws IOException { | |
| 419 } | |
| 420 | |
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421 protected void writeHeapRecordPrologue() throws IOException { |
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422 } |
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423 |
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424 protected void writeHeapRecordEpilogue() throws IOException { |
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425 } |
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426 |
| 0 | 427 // HeapVisitor, OopVisitor methods can't throw any non-runtime |
| 428 // exception. But, derived class write methods (which are called | |
| 429 // from visitor callbacks) may throw IOException. Hence, we throw | |
| 430 // RuntimeException with origianal IOException as cause from the | |
| 431 // visitor methods. This method gets back the original IOException | |
| 432 // (if any) and re-throws the same. | |
| 433 protected void handleRuntimeException(RuntimeException re) | |
| 434 throws IOException { | |
| 435 Throwable cause = re.getCause(); | |
| 436 if (cause != null && cause instanceof IOException) { | |
| 437 throw (IOException) cause; | |
| 438 } else { | |
| 439 // some other RuntimeException, just re-throw | |
| 440 throw re; | |
| 441 } | |
| 442 } | |
| 443 | |
| 444 // whether a given oop is Java visible or hotspot internal? | |
| 445 protected boolean isJavaVisible(Oop oop) { | |
| 446 if (oop instanceof Instance || oop instanceof TypeArray) { | |
| 447 return true; | |
| 448 } else if (oop instanceof ObjArray) { | |
| 449 ObjArrayKlass oak = (ObjArrayKlass) oop.getKlass(); | |
| 450 Klass bottomKlass = oak.getBottomKlass(); | |
| 451 return bottomKlass instanceof InstanceKlass || | |
| 452 bottomKlass instanceof TypeArrayKlass; | |
| 453 } else { | |
| 454 return false; | |
| 455 } | |
| 456 } | |
| 457 | |
| 458 protected Symbol javaLangClass; | |
| 459 protected Symbol javaLangString; | |
| 460 protected Symbol javaLangThread; | |
| 461 } |