Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/HeapHprofBinWriter.java @ 196:d1605aabd0a1 jdk7-b30
6719955: Update copyright year
Summary: Update copyright year for files that have been modified in 2008
Reviewed-by: ohair, tbell
| author | xdono |
|---|---|
| date | Wed, 02 Jul 2008 12:55:16 -0700 |
| parents | ba764ed4b6f2 |
| children | c18cbe5936b8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 2004-2008 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.utilities; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.nio.channels.*; | |
| 29 import java.util.*; | |
| 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 | |
| 35 /* | |
| 36 * This class writes Java heap in hprof binary format. This format is | |
| 37 * used by Heap Analysis Tool (HAT). The class is heavily influenced | |
| 38 * by 'hprof_io.c' of 1.5 new hprof implementation. | |
| 39 */ | |
| 40 | |
| 41 /* hprof binary format: (result either written to a file or sent over | |
| 42 * the network). | |
| 43 * | |
| 44 * WARNING: This format is still under development, and is subject to | |
| 45 * change without notice. | |
| 46 * | |
| 47 * header "JAVA PROFILE 1.0.1" (0-terminated) | |
| 48 * u4 size of identifiers. Identifiers are used to represent | |
| 49 * UTF8 strings, objects, stack traces, etc. They usually | |
| 50 * have the same size as host pointers. For example, on | |
| 51 * Solaris and Win32, the size is 4. | |
| 52 * u4 high word | |
| 53 * u4 low word number of milliseconds since 0:00 GMT, 1/1/70 | |
| 54 * [record]* a sequence of records. | |
| 55 * | |
| 56 */ | |
| 57 | |
| 58 /* | |
| 59 * | |
| 60 * Record format: | |
| 61 * | |
| 62 * u1 a TAG denoting the type of the record | |
| 63 * u4 number of *microseconds* since the time stamp in the | |
| 64 * header. (wraps around in a little more than an hour) | |
| 65 * u4 number of bytes *remaining* in the record. Note that | |
| 66 * this number excludes the tag and the length field itself. | |
| 67 * [u1]* BODY of the record (a sequence of bytes) | |
| 68 */ | |
| 69 | |
| 70 /* | |
| 71 * The following TAGs are supported: | |
| 72 * | |
| 73 * TAG BODY notes | |
| 74 *---------------------------------------------------------- | |
| 75 * HPROF_UTF8 a UTF8-encoded name | |
| 76 * | |
| 77 * id name ID | |
| 78 * [u1]* UTF8 characters (no trailing zero) | |
| 79 * | |
| 80 * HPROF_LOAD_CLASS a newly loaded class | |
| 81 * | |
| 82 * u4 class serial number (> 0) | |
| 83 * id class object ID | |
| 84 * u4 stack trace serial number | |
| 85 * id class name ID | |
| 86 * | |
| 87 * HPROF_UNLOAD_CLASS an unloading class | |
| 88 * | |
| 89 * u4 class serial_number | |
| 90 * | |
| 91 * HPROF_FRAME a Java stack frame | |
| 92 * | |
| 93 * id stack frame ID | |
| 94 * id method name ID | |
| 95 * id method signature ID | |
| 96 * id source file name ID | |
| 97 * u4 class serial number | |
| 98 * i4 line number. >0: normal | |
| 99 * -1: unknown | |
| 100 * -2: compiled method | |
| 101 * -3: native method | |
| 102 * | |
| 103 * HPROF_TRACE a Java stack trace | |
| 104 * | |
| 105 * u4 stack trace serial number | |
| 106 * u4 thread serial number | |
| 107 * u4 number of frames | |
| 108 * [id]* stack frame IDs | |
| 109 * | |
| 110 * | |
| 111 * HPROF_ALLOC_SITES a set of heap allocation sites, obtained after GC | |
| 112 * | |
| 113 * u2 flags 0x0001: incremental vs. complete | |
| 114 * 0x0002: sorted by allocation vs. live | |
| 115 * 0x0004: whether to force a GC | |
| 116 * u4 cutoff ratio | |
| 117 * u4 total live bytes | |
| 118 * u4 total live instances | |
| 119 * u8 total bytes allocated | |
| 120 * u8 total instances allocated | |
| 121 * u4 number of sites that follow | |
| 122 * [u1 is_array: 0: normal object | |
| 123 * 2: object array | |
| 124 * 4: boolean array | |
| 125 * 5: char array | |
| 126 * 6: float array | |
| 127 * 7: double array | |
| 128 * 8: byte array | |
| 129 * 9: short array | |
| 130 * 10: int array | |
| 131 * 11: long array | |
| 132 * u4 class serial number (may be zero during startup) | |
| 133 * u4 stack trace serial number | |
| 134 * u4 number of bytes alive | |
| 135 * u4 number of instances alive | |
| 136 * u4 number of bytes allocated | |
| 137 * u4]* number of instance allocated | |
| 138 * | |
| 139 * HPROF_START_THREAD a newly started thread. | |
| 140 * | |
| 141 * u4 thread serial number (> 0) | |
| 142 * id thread object ID | |
| 143 * u4 stack trace serial number | |
| 144 * id thread name ID | |
| 145 * id thread group name ID | |
| 146 * id thread group parent name ID | |
| 147 * | |
| 148 * HPROF_END_THREAD a terminating thread. | |
| 149 * | |
| 150 * u4 thread serial number | |
| 151 * | |
| 152 * HPROF_HEAP_SUMMARY heap summary | |
| 153 * | |
| 154 * u4 total live bytes | |
| 155 * u4 total live instances | |
| 156 * u8 total bytes allocated | |
| 157 * u8 total instances allocated | |
| 158 * | |
| 159 * HPROF_HEAP_DUMP denote a heap dump | |
| 160 * | |
| 161 * [heap dump sub-records]* | |
| 162 * | |
| 163 * There are four kinds of heap dump sub-records: | |
| 164 * | |
| 165 * u1 sub-record type | |
| 166 * | |
| 167 * HPROF_GC_ROOT_UNKNOWN unknown root | |
| 168 * | |
| 169 * id object ID | |
| 170 * | |
| 171 * HPROF_GC_ROOT_THREAD_OBJ thread object | |
| 172 * | |
| 173 * id thread object ID (may be 0 for a | |
| 174 * thread newly attached through JNI) | |
| 175 * u4 thread sequence number | |
| 176 * u4 stack trace sequence number | |
| 177 * | |
| 178 * HPROF_GC_ROOT_JNI_GLOBAL JNI global ref root | |
| 179 * | |
| 180 * id object ID | |
| 181 * id JNI global ref ID | |
| 182 * | |
| 183 * HPROF_GC_ROOT_JNI_LOCAL JNI local ref | |
| 184 * | |
| 185 * id object ID | |
| 186 * u4 thread serial number | |
| 187 * u4 frame # in stack trace (-1 for empty) | |
| 188 * | |
| 189 * HPROF_GC_ROOT_JAVA_FRAME Java stack frame | |
| 190 * | |
| 191 * id object ID | |
| 192 * u4 thread serial number | |
| 193 * u4 frame # in stack trace (-1 for empty) | |
| 194 * | |
| 195 * HPROF_GC_ROOT_NATIVE_STACK Native stack | |
| 196 * | |
| 197 * id object ID | |
| 198 * u4 thread serial number | |
| 199 * | |
| 200 * HPROF_GC_ROOT_STICKY_CLASS System class | |
| 201 * | |
| 202 * id object ID | |
| 203 * | |
| 204 * HPROF_GC_ROOT_THREAD_BLOCK Reference from thread block | |
| 205 * | |
| 206 * id object ID | |
| 207 * u4 thread serial number | |
| 208 * | |
| 209 * HPROF_GC_ROOT_MONITOR_USED Busy monitor | |
| 210 * | |
| 211 * id object ID | |
| 212 * | |
| 213 * HPROF_GC_CLASS_DUMP dump of a class object | |
| 214 * | |
| 215 * id class object ID | |
| 216 * u4 stack trace serial number | |
| 217 * id super class object ID | |
| 218 * id class loader object ID | |
| 219 * id signers object ID | |
| 220 * id protection domain object ID | |
| 221 * id reserved | |
| 222 * id reserved | |
| 223 * | |
| 224 * u4 instance size (in bytes) | |
| 225 * | |
| 226 * u2 size of constant pool | |
| 227 * [u2, constant pool index, | |
| 228 * ty, type | |
| 229 * 2: object | |
| 230 * 4: boolean | |
| 231 * 5: char | |
| 232 * 6: float | |
| 233 * 7: double | |
| 234 * 8: byte | |
| 235 * 9: short | |
| 236 * 10: int | |
| 237 * 11: long | |
| 238 * vl]* and value | |
| 239 * | |
| 240 * u2 number of static fields | |
| 241 * [id, static field name, | |
| 242 * ty, type, | |
| 243 * vl]* and value | |
| 244 * | |
| 245 * u2 number of inst. fields (not inc. super) | |
| 246 * [id, instance field name, | |
| 247 * ty]* type | |
| 248 * | |
| 249 * HPROF_GC_INSTANCE_DUMP dump of a normal object | |
| 250 * | |
| 251 * id object ID | |
| 252 * u4 stack trace serial number | |
| 253 * id class object ID | |
| 254 * u4 number of bytes that follow | |
| 255 * [vl]* instance field values (class, followed | |
| 256 * by super, super's super ...) | |
| 257 * | |
| 258 * HPROF_GC_OBJ_ARRAY_DUMP dump of an object array | |
| 259 * | |
| 260 * id array object ID | |
| 261 * u4 stack trace serial number | |
| 262 * u4 number of elements | |
| 263 * id array class ID | |
| 264 * [id]* elements | |
| 265 * | |
| 266 * HPROF_GC_PRIM_ARRAY_DUMP dump of a primitive array | |
| 267 * | |
| 268 * id array object ID | |
| 269 * u4 stack trace serial number | |
| 270 * u4 number of elements | |
| 271 * u1 element type | |
| 272 * 4: boolean array | |
| 273 * 5: char array | |
| 274 * 6: float array | |
| 275 * 7: double array | |
| 276 * 8: byte array | |
| 277 * 9: short array | |
| 278 * 10: int array | |
| 279 * 11: long array | |
| 280 * [u1]* elements | |
| 281 * | |
| 282 * HPROF_CPU_SAMPLES a set of sample traces of running threads | |
| 283 * | |
| 284 * u4 total number of samples | |
| 285 * u4 # of traces | |
| 286 * [u4 # of samples | |
| 287 * u4]* stack trace serial number | |
| 288 * | |
| 289 * HPROF_CONTROL_SETTINGS the settings of on/off switches | |
| 290 * | |
| 291 * u4 0x00000001: alloc traces on/off | |
| 292 * 0x00000002: cpu sampling on/off | |
| 293 * u2 stack trace depth | |
| 294 * | |
| 295 */ | |
| 296 | |
| 297 public class HeapHprofBinWriter extends AbstractHeapGraphWriter { | |
| 298 // hprof binary file header | |
| 299 private static final String HPROF_HEADER = "JAVA PROFILE 1.0.1"; | |
| 300 | |
| 301 // constants in enum HprofTag | |
| 302 private static final int HPROF_UTF8 = 0x01; | |
| 303 private static final int HPROF_LOAD_CLASS = 0x02; | |
| 304 private static final int HPROF_UNLOAD_CLASS = 0x03; | |
| 305 private static final int HPROF_FRAME = 0x04; | |
| 306 private static final int HPROF_TRACE = 0x05; | |
| 307 private static final int HPROF_ALLOC_SITES = 0x06; | |
| 308 private static final int HPROF_HEAP_SUMMARY = 0x07; | |
| 309 private static final int HPROF_START_THREAD = 0x0A; | |
| 310 private static final int HPROF_END_THREAD = 0x0B; | |
| 311 private static final int HPROF_HEAP_DUMP = 0x0C; | |
| 312 private static final int HPROF_CPU_SAMPLES = 0x0D; | |
| 313 private static final int HPROF_CONTROL_SETTINGS = 0x0E; | |
| 314 | |
| 315 // Heap dump constants | |
| 316 // constants in enum HprofGcTag | |
| 317 private static final int HPROF_GC_ROOT_UNKNOWN = 0xFF; | |
| 318 private static final int HPROF_GC_ROOT_JNI_GLOBAL = 0x01; | |
| 319 private static final int HPROF_GC_ROOT_JNI_LOCAL = 0x02; | |
| 320 private static final int HPROF_GC_ROOT_JAVA_FRAME = 0x03; | |
| 321 private static final int HPROF_GC_ROOT_NATIVE_STACK = 0x04; | |
| 322 private static final int HPROF_GC_ROOT_STICKY_CLASS = 0x05; | |
| 323 private static final int HPROF_GC_ROOT_THREAD_BLOCK = 0x06; | |
| 324 private static final int HPROF_GC_ROOT_MONITOR_USED = 0x07; | |
| 325 private static final int HPROF_GC_ROOT_THREAD_OBJ = 0x08; | |
| 326 private static final int HPROF_GC_CLASS_DUMP = 0x20; | |
| 327 private static final int HPROF_GC_INSTANCE_DUMP = 0x21; | |
| 328 private static final int HPROF_GC_OBJ_ARRAY_DUMP = 0x22; | |
| 329 private static final int HPROF_GC_PRIM_ARRAY_DUMP = 0x23; | |
| 330 | |
| 331 // constants in enum HprofType | |
| 332 private static final int HPROF_ARRAY_OBJECT = 1; | |
| 333 private static final int HPROF_NORMAL_OBJECT = 2; | |
| 334 private static final int HPROF_BOOLEAN = 4; | |
| 335 private static final int HPROF_CHAR = 5; | |
| 336 private static final int HPROF_FLOAT = 6; | |
| 337 private static final int HPROF_DOUBLE = 7; | |
| 338 private static final int HPROF_BYTE = 8; | |
| 339 private static final int HPROF_SHORT = 9; | |
| 340 private static final int HPROF_INT = 10; | |
| 341 private static final int HPROF_LONG = 11; | |
| 342 | |
| 343 // Java type codes | |
| 344 private static final int JVM_SIGNATURE_BOOLEAN = 'Z'; | |
| 345 private static final int JVM_SIGNATURE_CHAR = 'C'; | |
| 346 private static final int JVM_SIGNATURE_BYTE = 'B'; | |
| 347 private static final int JVM_SIGNATURE_SHORT = 'S'; | |
| 348 private static final int JVM_SIGNATURE_INT = 'I'; | |
| 349 private static final int JVM_SIGNATURE_LONG = 'J'; | |
| 350 private static final int JVM_SIGNATURE_FLOAT = 'F'; | |
| 351 private static final int JVM_SIGNATURE_DOUBLE = 'D'; | |
| 352 private static final int JVM_SIGNATURE_ARRAY = '['; | |
| 353 private static final int JVM_SIGNATURE_CLASS = 'L'; | |
| 354 | |
| 355 | |
| 356 public synchronized void write(String fileName) throws IOException { | |
| 357 // open file stream and create buffered data output stream | |
| 358 FileOutputStream fos = new FileOutputStream(fileName); | |
| 359 FileChannel chn = fos.getChannel(); | |
| 360 out = new DataOutputStream(new BufferedOutputStream(fos)); | |
| 361 | |
| 362 VM vm = VM.getVM(); | |
| 363 dbg = vm.getDebugger(); | |
| 364 objectHeap = vm.getObjectHeap(); | |
| 365 symTbl = vm.getSymbolTable(); | |
| 366 | |
| 367 OBJ_ID_SIZE = (int) vm.getOopSize(); | |
| 368 | |
| 369 BOOLEAN_BASE_OFFSET = TypeArray.baseOffsetInBytes(BasicType.T_BOOLEAN); | |
| 370 BYTE_BASE_OFFSET = TypeArray.baseOffsetInBytes(BasicType.T_BYTE); | |
| 371 CHAR_BASE_OFFSET = TypeArray.baseOffsetInBytes(BasicType.T_CHAR); | |
| 372 SHORT_BASE_OFFSET = TypeArray.baseOffsetInBytes(BasicType.T_SHORT); | |
| 373 INT_BASE_OFFSET = TypeArray.baseOffsetInBytes(BasicType.T_INT); | |
| 374 LONG_BASE_OFFSET = TypeArray.baseOffsetInBytes(BasicType.T_LONG); | |
| 375 FLOAT_BASE_OFFSET = TypeArray.baseOffsetInBytes(BasicType.T_FLOAT); | |
| 376 DOUBLE_BASE_OFFSET = TypeArray.baseOffsetInBytes(BasicType.T_DOUBLE); | |
| 377 OBJECT_BASE_OFFSET = TypeArray.baseOffsetInBytes(BasicType.T_OBJECT); | |
| 378 | |
| 379 BOOLEAN_SIZE = objectHeap.getBooleanSize(); | |
| 380 BYTE_SIZE = objectHeap.getByteSize(); | |
| 381 CHAR_SIZE = objectHeap.getCharSize(); | |
| 382 SHORT_SIZE = objectHeap.getShortSize(); | |
| 383 INT_SIZE = objectHeap.getIntSize(); | |
| 384 LONG_SIZE = objectHeap.getLongSize(); | |
| 385 FLOAT_SIZE = objectHeap.getFloatSize(); | |
| 386 DOUBLE_SIZE = objectHeap.getDoubleSize(); | |
| 387 | |
| 388 // hprof bin format header | |
| 389 writeFileHeader(); | |
| 390 | |
| 391 // dummy stack trace without any frames so that | |
| 392 // HAT can be run without -stack false option | |
| 393 writeDummyTrace(); | |
| 394 | |
| 395 // hprof UTF-8 symbols section | |
| 396 writeSymbols(); | |
| 397 // HPROF_LOAD_CLASS records for all classes | |
| 398 writeClasses(); | |
| 399 | |
| 400 // write heap data now | |
| 401 out.writeByte((byte)HPROF_HEAP_DUMP); | |
| 402 out.writeInt(0); // relative timestamp | |
| 403 | |
| 404 // remember position of dump length, we will fixup | |
| 405 // length later - hprof format requires length. | |
| 406 out.flush(); | |
| 407 long dumpStart = chn.position(); | |
| 408 | |
| 409 // write dummy length of 0 and we'll fix it later. | |
| 410 out.writeInt(0); | |
| 411 | |
| 412 // write CLASS_DUMP records | |
| 413 writeClassDumpRecords(); | |
| 414 | |
| 415 // this will write heap data into the buffer stream | |
| 416 super.write(); | |
| 417 | |
| 418 // flush buffer stream and throw it. | |
| 419 out.flush(); | |
| 420 out = null; | |
| 421 | |
| 422 // now get current position to calculate length | |
| 423 long dumpEnd = chn.position(); | |
| 424 // calculate length of heap data | |
| 425 int dumpLen = (int) (dumpEnd - dumpStart - 4); | |
| 426 | |
| 427 // seek the position to write length | |
| 428 chn.position(dumpStart); | |
| 429 | |
| 430 // write length as integer | |
| 431 fos.write((dumpLen >>> 24) & 0xFF); | |
| 432 fos.write((dumpLen >>> 16) & 0xFF); | |
| 433 fos.write((dumpLen >>> 8) & 0xFF); | |
| 434 fos.write((dumpLen >>> 0) & 0xFF); | |
| 435 | |
| 436 // close the file stream | |
| 437 fos.close(); | |
| 438 } | |
| 439 | |
| 440 private void writeClassDumpRecords() throws IOException { | |
| 441 SystemDictionary sysDict = VM.getVM().getSystemDictionary(); | |
| 442 try { | |
| 443 sysDict.allClassesDo(new SystemDictionary.ClassVisitor() { | |
| 444 public void visit(Klass k) { | |
| 445 try { | |
| 446 writeClassDumpRecord(k); | |
| 447 } catch (IOException e) { | |
| 448 throw new RuntimeException(e); | |
| 449 } | |
| 450 } | |
| 451 }); | |
| 452 } catch (RuntimeException re) { | |
| 453 handleRuntimeException(re); | |
| 454 } | |
| 455 } | |
| 456 | |
| 457 protected void writeClass(Instance instance) throws IOException { | |
| 458 Klass reflectedKlass = OopUtilities.classOopToKlass(instance); | |
| 459 // dump instance record only for primitive type Class objects. | |
| 460 // all other Class objects are covered by writeClassDumpRecords. | |
| 461 if (reflectedKlass == null) { | |
| 462 writeInstance(instance); | |
| 463 } | |
| 464 } | |
| 465 | |
| 466 private void writeClassDumpRecord(Klass k) throws IOException { | |
| 467 out.writeByte((byte)HPROF_GC_CLASS_DUMP); | |
| 468 writeObjectID(k.getJavaMirror()); | |
| 469 out.writeInt(DUMMY_STACK_TRACE_ID); | |
| 470 Klass superKlass = k.getJavaSuper(); | |
| 471 if (superKlass != null) { | |
| 472 writeObjectID(superKlass.getJavaMirror()); | |
| 473 } else { | |
| 474 writeObjectID(null); | |
| 475 } | |
| 476 | |
| 477 if (k instanceof InstanceKlass) { | |
| 478 InstanceKlass ik = (InstanceKlass) k; | |
| 479 writeObjectID(ik.getClassLoader()); | |
| 480 writeObjectID(ik.getSigners()); | |
| 481 writeObjectID(ik.getProtectionDomain()); | |
| 482 // two reserved id fields | |
| 483 writeObjectID(null); | |
| 484 writeObjectID(null); | |
| 485 List fields = getInstanceFields(ik); | |
| 486 int instSize = getSizeForFields(fields); | |
| 487 classDataCache.put(ik, new ClassData(instSize, fields)); | |
| 488 out.writeInt(instSize); | |
| 489 | |
| 490 // For now, ignore constant pool - HAT ignores too! | |
| 491 // output number of cp entries as zero. | |
| 492 out.writeShort((short) 0); | |
| 493 | |
| 494 List declaredFields = ik.getImmediateFields(); | |
| 495 List staticFields = new ArrayList(); | |
| 496 List instanceFields = new ArrayList(); | |
| 497 Iterator itr = null; | |
| 498 for (itr = declaredFields.iterator(); itr.hasNext();) { | |
| 499 Field field = (Field) itr.next(); | |
| 500 if (field.isStatic()) { | |
| 501 staticFields.add(field); | |
| 502 } else { | |
| 503 instanceFields.add(field); | |
| 504 } | |
| 505 } | |
| 506 | |
| 507 // dump static field descriptors | |
| 508 writeFieldDescriptors(staticFields, ik); | |
| 509 | |
| 510 // dump instance field descriptors | |
| 511 writeFieldDescriptors(instanceFields, null); | |
| 512 } else { | |
| 513 if (k instanceof ObjArrayKlass) { | |
| 514 ObjArrayKlass oak = (ObjArrayKlass) k; | |
| 515 Klass bottomKlass = oak.getBottomKlass(); | |
| 516 if (bottomKlass instanceof InstanceKlass) { | |
| 517 InstanceKlass ik = (InstanceKlass) bottomKlass; | |
| 518 writeObjectID(ik.getClassLoader()); | |
| 519 writeObjectID(ik.getSigners()); | |
| 520 writeObjectID(ik.getProtectionDomain()); | |
| 521 } else { | |
| 522 writeObjectID(null); | |
| 523 writeObjectID(null); | |
| 524 writeObjectID(null); | |
| 525 } | |
| 526 } else { | |
| 527 writeObjectID(null); | |
| 528 writeObjectID(null); | |
| 529 writeObjectID(null); | |
| 530 } | |
| 531 // two reserved id fields | |
| 532 writeObjectID(null); | |
| 533 writeObjectID(null); | |
| 534 // write zero instance size -- as instance size | |
| 535 // is variable for arrays. | |
| 536 out.writeInt(0); | |
| 537 // no constant pool for array klasses | |
| 538 out.writeShort((short) 0); | |
| 539 // no static fields for array klasses | |
| 540 out.writeShort((short) 0); | |
| 541 // no instance fields for array klasses | |
| 542 out.writeShort((short) 0); | |
| 543 } | |
| 544 } | |
| 545 | |
| 546 protected void writeJavaThread(JavaThread jt, int index) throws IOException { | |
| 547 out.writeByte((byte) HPROF_GC_ROOT_THREAD_OBJ); | |
| 548 writeObjectID(jt.getThreadObj()); | |
| 549 out.writeInt(index); | |
| 550 out.writeInt(DUMMY_STACK_TRACE_ID); | |
| 551 writeLocalJNIHandles(jt, index); | |
| 552 } | |
| 553 | |
| 554 protected void writeLocalJNIHandles(JavaThread jt, int index) throws IOException { | |
| 555 final int threadIndex = index; | |
| 556 JNIHandleBlock blk = jt.activeHandles(); | |
| 557 if (blk != null) { | |
| 558 try { | |
| 559 blk.oopsDo(new AddressVisitor() { | |
| 560 public void visitAddress(Address handleAddr) { | |
| 561 try { | |
| 562 if (handleAddr != null) { | |
| 563 OopHandle oopHandle = handleAddr.getOopHandleAt(0); | |
| 564 Oop oop = objectHeap.newOop(oopHandle); | |
| 565 // exclude JNI handles hotspot internal objects | |
| 566 if (oop != null && isJavaVisible(oop)) { | |
| 567 out.writeByte((byte) HPROF_GC_ROOT_JNI_LOCAL); | |
| 568 writeObjectID(oop); | |
| 569 out.writeInt(threadIndex); | |
| 570 out.writeInt(EMPTY_FRAME_DEPTH); | |
| 571 } | |
| 572 } | |
| 573 } catch (IOException exp) { | |
| 574 throw new RuntimeException(exp); | |
| 575 } | |
| 576 } | |
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577 public void visitCompOopAddress(Address handleAddr) { |
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578 throw new RuntimeException( |
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579 " Should not reach here. JNIHandles are not compressed \n"); |
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580 } |
| 0 | 581 }); |
| 582 } catch (RuntimeException re) { | |
| 583 handleRuntimeException(re); | |
| 584 } | |
| 585 } | |
| 586 } | |
| 587 | |
| 588 protected void writeGlobalJNIHandle(Address handleAddr) throws IOException { | |
| 589 OopHandle oopHandle = handleAddr.getOopHandleAt(0); | |
| 590 Oop oop = objectHeap.newOop(oopHandle); | |
| 591 // exclude JNI handles of hotspot internal objects | |
| 592 if (oop != null && isJavaVisible(oop)) { | |
| 593 out.writeByte((byte) HPROF_GC_ROOT_JNI_GLOBAL); | |
| 594 writeObjectID(oop); | |
| 595 // use JNIHandle address as ID | |
| 596 writeObjectID(getAddressValue(handleAddr)); | |
| 597 } | |
| 598 } | |
| 599 | |
| 600 protected void writeObjectArray(ObjArray array) throws IOException { | |
| 601 out.writeByte((byte) HPROF_GC_OBJ_ARRAY_DUMP); | |
| 602 writeObjectID(array); | |
| 603 out.writeInt(DUMMY_STACK_TRACE_ID); | |
| 604 out.writeInt((int) array.getLength()); | |
| 605 writeObjectID(array.getKlass().getJavaMirror()); | |
| 606 final int length = (int) array.getLength(); | |
| 607 for (int index = 0; index < length; index++) { | |
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608 OopHandle handle = array.getOopHandleAt(index); |
| 0 | 609 writeObjectID(getAddressValue(handle)); |
| 610 } | |
| 611 } | |
| 612 | |
| 613 protected void writePrimitiveArray(TypeArray array) throws IOException { | |
| 614 out.writeByte((byte) HPROF_GC_PRIM_ARRAY_DUMP); | |
| 615 writeObjectID(array); | |
| 616 out.writeInt(DUMMY_STACK_TRACE_ID); | |
| 617 out.writeInt((int) array.getLength()); | |
| 618 TypeArrayKlass tak = (TypeArrayKlass) array.getKlass(); | |
| 619 final int type = (int) tak.getElementType(); | |
| 620 out.writeByte((byte) type); | |
| 621 switch (type) { | |
| 622 case TypeArrayKlass.T_BOOLEAN: | |
| 623 writeBooleanArray(array); | |
| 624 break; | |
| 625 case TypeArrayKlass.T_CHAR: | |
| 626 writeCharArray(array); | |
| 627 break; | |
| 628 case TypeArrayKlass.T_FLOAT: | |
| 629 writeFloatArray(array); | |
| 630 break; | |
| 631 case TypeArrayKlass.T_DOUBLE: | |
| 632 writeDoubleArray(array); | |
| 633 break; | |
| 634 case TypeArrayKlass.T_BYTE: | |
| 635 writeByteArray(array); | |
| 636 break; | |
| 637 case TypeArrayKlass.T_SHORT: | |
| 638 writeShortArray(array); | |
| 639 break; | |
| 640 case TypeArrayKlass.T_INT: | |
| 641 writeIntArray(array); | |
| 642 break; | |
| 643 case TypeArrayKlass.T_LONG: | |
| 644 writeLongArray(array); | |
| 645 break; | |
| 646 default: | |
| 647 throw new RuntimeException("should not reach here"); | |
| 648 } | |
| 649 } | |
| 650 | |
| 651 private void writeBooleanArray(TypeArray array) throws IOException { | |
| 652 final int length = (int) array.getLength(); | |
| 653 for (int index = 0; index < length; index++) { | |
| 654 long offset = BOOLEAN_BASE_OFFSET + index * BOOLEAN_SIZE; | |
| 655 out.writeBoolean(array.getHandle().getJBooleanAt(offset)); | |
| 656 } | |
| 657 } | |
| 658 | |
| 659 private void writeByteArray(TypeArray array) throws IOException { | |
| 660 final int length = (int) array.getLength(); | |
| 661 for (int index = 0; index < length; index++) { | |
| 662 long offset = BYTE_BASE_OFFSET + index * BYTE_SIZE; | |
| 663 out.writeByte(array.getHandle().getJByteAt(offset)); | |
| 664 } | |
| 665 } | |
| 666 | |
| 667 private void writeShortArray(TypeArray array) throws IOException { | |
| 668 final int length = (int) array.getLength(); | |
| 669 for (int index = 0; index < length; index++) { | |
| 670 long offset = SHORT_BASE_OFFSET + index * SHORT_SIZE; | |
| 671 out.writeShort(array.getHandle().getJShortAt(offset)); | |
| 672 } | |
| 673 } | |
| 674 | |
| 675 private void writeIntArray(TypeArray array) throws IOException { | |
| 676 final int length = (int) array.getLength(); | |
| 677 for (int index = 0; index < length; index++) { | |
| 678 long offset = INT_BASE_OFFSET + index * INT_SIZE; | |
| 679 out.writeInt(array.getHandle().getJIntAt(offset)); | |
| 680 } | |
| 681 } | |
| 682 | |
| 683 private void writeLongArray(TypeArray array) throws IOException { | |
| 684 final int length = (int) array.getLength(); | |
| 685 for (int index = 0; index < length; index++) { | |
| 686 long offset = LONG_BASE_OFFSET + index * LONG_SIZE; | |
| 687 out.writeLong(array.getHandle().getJLongAt(offset)); | |
| 688 } | |
| 689 } | |
| 690 | |
| 691 private void writeCharArray(TypeArray array) throws IOException { | |
| 692 final int length = (int) array.getLength(); | |
| 693 for (int index = 0; index < length; index++) { | |
| 694 long offset = CHAR_BASE_OFFSET + index * CHAR_SIZE; | |
| 695 out.writeChar(array.getHandle().getJCharAt(offset)); | |
| 696 } | |
| 697 } | |
| 698 | |
| 699 private void writeFloatArray(TypeArray array) throws IOException { | |
| 700 final int length = (int) array.getLength(); | |
| 701 for (int index = 0; index < length; index++) { | |
| 702 long offset = FLOAT_BASE_OFFSET + index * FLOAT_SIZE; | |
| 703 out.writeFloat(array.getHandle().getJFloatAt(offset)); | |
| 704 } | |
| 705 } | |
| 706 | |
| 707 private void writeDoubleArray(TypeArray array) throws IOException { | |
| 708 final int length = (int) array.getLength(); | |
| 709 for (int index = 0; index < length; index++) { | |
| 710 long offset = DOUBLE_BASE_OFFSET + index * DOUBLE_SIZE; | |
| 711 out.writeDouble(array.getHandle().getJDoubleAt(offset)); | |
| 712 } | |
| 713 } | |
| 714 | |
| 715 protected void writeInstance(Instance instance) throws IOException { | |
| 716 out.writeByte((byte) HPROF_GC_INSTANCE_DUMP); | |
| 717 writeObjectID(instance); | |
| 718 out.writeInt(DUMMY_STACK_TRACE_ID); | |
| 719 Klass klass = instance.getKlass(); | |
| 720 writeObjectID(klass.getJavaMirror()); | |
| 721 | |
| 722 ClassData cd = (ClassData) classDataCache.get(klass); | |
| 723 if (Assert.ASSERTS_ENABLED) { | |
| 724 Assert.that(cd != null, "can not get class data for " + klass.getName().asString() + klass.getHandle()); | |
| 725 } | |
| 726 List fields = cd.fields; | |
| 727 int size = cd.instSize; | |
| 728 out.writeInt(size); | |
| 729 for (Iterator itr = fields.iterator(); itr.hasNext();) { | |
| 730 writeField((Field) itr.next(), instance); | |
| 731 } | |
| 732 } | |
| 733 | |
| 734 //-- Internals only below this point | |
| 735 | |
| 736 private void writeFieldDescriptors(List fields, InstanceKlass ik) | |
| 737 throws IOException { | |
| 738 // ik == null for instance fields. | |
| 739 out.writeShort((short) fields.size()); | |
| 740 for (Iterator itr = fields.iterator(); itr.hasNext();) { | |
| 741 Field field = (Field) itr.next(); | |
| 742 Symbol name = symTbl.probe(field.getID().getName()); | |
| 743 writeObjectID(name); | |
| 744 char typeCode = (char) field.getSignature().getByteAt(0); | |
| 745 int kind = signatureToHprofKind(typeCode); | |
| 746 out.writeByte((byte)kind); | |
| 747 if (ik != null) { | |
| 748 // static field | |
| 749 writeField(field, ik); | |
| 750 } | |
| 751 } | |
| 752 } | |
| 753 | |
| 754 public static int signatureToHprofKind(char ch) { | |
| 755 switch (ch) { | |
| 756 case JVM_SIGNATURE_CLASS: | |
| 757 case JVM_SIGNATURE_ARRAY: | |
| 758 return HPROF_NORMAL_OBJECT; | |
| 759 case JVM_SIGNATURE_BOOLEAN: | |
| 760 return HPROF_BOOLEAN; | |
| 761 case JVM_SIGNATURE_CHAR: | |
| 762 return HPROF_CHAR; | |
| 763 case JVM_SIGNATURE_FLOAT: | |
| 764 return HPROF_FLOAT; | |
| 765 case JVM_SIGNATURE_DOUBLE: | |
| 766 return HPROF_DOUBLE; | |
| 767 case JVM_SIGNATURE_BYTE: | |
| 768 return HPROF_BYTE; | |
| 769 case JVM_SIGNATURE_SHORT: | |
| 770 return HPROF_SHORT; | |
| 771 case JVM_SIGNATURE_INT: | |
| 772 return HPROF_INT; | |
| 773 case JVM_SIGNATURE_LONG: | |
| 774 return HPROF_LONG; | |
| 775 default: | |
| 776 throw new RuntimeException("should not reach here"); | |
| 777 } | |
| 778 } | |
| 779 | |
| 780 private void writeField(Field field, Oop oop) throws IOException { | |
| 781 char typeCode = (char) field.getSignature().getByteAt(0); | |
| 782 switch (typeCode) { | |
| 783 case JVM_SIGNATURE_BOOLEAN: | |
| 784 out.writeBoolean(((BooleanField)field).getValue(oop)); | |
| 785 break; | |
| 786 case JVM_SIGNATURE_CHAR: | |
| 787 out.writeChar(((CharField)field).getValue(oop)); | |
| 788 break; | |
| 789 case JVM_SIGNATURE_BYTE: | |
| 790 out.writeByte(((ByteField)field).getValue(oop)); | |
| 791 break; | |
| 792 case JVM_SIGNATURE_SHORT: | |
| 793 out.writeShort(((ShortField)field).getValue(oop)); | |
| 794 break; | |
| 795 case JVM_SIGNATURE_INT: | |
| 796 out.writeInt(((IntField)field).getValue(oop)); | |
| 797 break; | |
| 798 case JVM_SIGNATURE_LONG: | |
| 799 out.writeLong(((LongField)field).getValue(oop)); | |
| 800 break; | |
| 801 case JVM_SIGNATURE_FLOAT: | |
| 802 out.writeFloat(((FloatField)field).getValue(oop)); | |
| 803 break; | |
| 804 case JVM_SIGNATURE_DOUBLE: | |
| 805 out.writeDouble(((DoubleField)field).getValue(oop)); | |
| 806 break; | |
| 807 case JVM_SIGNATURE_CLASS: | |
| 808 case JVM_SIGNATURE_ARRAY: { | |
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809 if (VM.getVM().isCompressedOopsEnabled()) { |
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810 OopHandle handle = ((NarrowOopField)field).getValueAsOopHandle(oop); |
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811 writeObjectID(getAddressValue(handle)); |
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812 } else { |
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813 OopHandle handle = ((OopField)field).getValueAsOopHandle(oop); |
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814 writeObjectID(getAddressValue(handle)); |
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815 } |
| 0 | 816 break; |
| 817 } | |
| 818 default: | |
| 819 throw new RuntimeException("should not reach here"); | |
| 820 } | |
| 821 } | |
| 822 | |
| 823 private void writeHeader(int tag, int len) throws IOException { | |
| 824 out.writeByte((byte)tag); | |
| 825 out.writeInt(0); // current ticks | |
| 826 out.writeInt(len); | |
| 827 } | |
| 828 | |
| 829 private void writeDummyTrace() throws IOException { | |
| 830 writeHeader(HPROF_TRACE, 3 * 4); | |
| 831 out.writeInt(DUMMY_STACK_TRACE_ID); | |
| 832 out.writeInt(0); | |
| 833 out.writeInt(0); | |
| 834 } | |
| 835 | |
| 836 private void writeSymbols() throws IOException { | |
| 837 try { | |
| 838 symTbl.symbolsDo(new SymbolTable.SymbolVisitor() { | |
| 839 public void visit(Symbol sym) { | |
| 840 try { | |
| 841 writeSymbol(sym); | |
| 842 } catch (IOException exp) { | |
| 843 throw new RuntimeException(exp); | |
| 844 } | |
| 845 } | |
| 846 }); | |
| 847 } catch (RuntimeException re) { | |
| 848 handleRuntimeException(re); | |
| 849 } | |
| 850 } | |
| 851 | |
| 852 private void writeSymbol(Symbol sym) throws IOException { | |
| 853 byte[] buf = sym.asString().getBytes("UTF-8"); | |
| 854 writeHeader(HPROF_UTF8, buf.length + OBJ_ID_SIZE); | |
| 855 writeObjectID(sym); | |
| 856 out.write(buf); | |
| 857 } | |
| 858 | |
| 859 private void writeClasses() throws IOException { | |
| 860 // write class list (id, name) association | |
| 861 SystemDictionary sysDict = VM.getVM().getSystemDictionary(); | |
| 862 try { | |
| 863 sysDict.allClassesDo(new SystemDictionary.ClassVisitor() { | |
| 864 private int serialNum = 1; | |
| 865 public void visit(Klass k) { | |
| 866 try { | |
| 867 Instance clazz = k.getJavaMirror(); | |
| 868 writeHeader(HPROF_LOAD_CLASS, 2 * (OBJ_ID_SIZE + 4)); | |
| 869 out.writeInt(serialNum); | |
| 870 writeObjectID(clazz); | |
| 871 out.writeInt(DUMMY_STACK_TRACE_ID); | |
| 872 writeObjectID(k.getName()); | |
| 873 serialNum++; | |
| 874 } catch (IOException exp) { | |
| 875 throw new RuntimeException(exp); | |
| 876 } | |
| 877 } | |
| 878 }); | |
| 879 } catch (RuntimeException re) { | |
| 880 handleRuntimeException(re); | |
| 881 } | |
| 882 } | |
| 883 | |
| 884 // writes hprof binary file header | |
| 885 private void writeFileHeader() throws IOException { | |
| 886 // version string | |
| 887 out.writeBytes(HPROF_HEADER); | |
| 888 out.writeByte((byte)'\0'); | |
| 889 | |
| 890 // write identifier size. we use pointers as identifiers. | |
| 891 out.writeInt(OBJ_ID_SIZE); | |
| 892 | |
| 893 // timestamp -- file creation time. | |
| 894 out.writeLong(System.currentTimeMillis()); | |
| 895 } | |
| 896 | |
| 897 // writes unique ID for an object | |
| 898 private void writeObjectID(Oop oop) throws IOException { | |
| 899 OopHandle handle = (oop != null)? oop.getHandle() : null; | |
| 900 long address = getAddressValue(handle); | |
| 901 writeObjectID(address); | |
| 902 } | |
| 903 | |
| 904 private void writeObjectID(long address) throws IOException { | |
| 905 if (OBJ_ID_SIZE == 4) { | |
| 906 out.writeInt((int) address); | |
| 907 } else { | |
| 908 out.writeLong(address); | |
| 909 } | |
| 910 } | |
| 911 | |
| 912 private long getAddressValue(Address addr) { | |
| 913 return (addr == null)? 0L : dbg.getAddressValue(addr); | |
| 914 } | |
| 915 | |
| 916 // get all declared as well as inherited (directly/indirectly) fields | |
| 917 private static List/*<Field>*/ getInstanceFields(InstanceKlass ik) { | |
| 918 InstanceKlass klass = ik; | |
| 919 List res = new ArrayList(); | |
| 920 while (klass != null) { | |
| 921 List curFields = klass.getImmediateFields(); | |
| 922 for (Iterator itr = curFields.iterator(); itr.hasNext();) { | |
| 923 Field f = (Field) itr.next(); | |
| 924 if (! f.isStatic()) { | |
| 925 res.add(f); | |
| 926 } | |
| 927 } | |
| 928 klass = (InstanceKlass) klass.getSuper(); | |
| 929 } | |
| 930 return res; | |
| 931 } | |
| 932 | |
| 933 // get size in bytes (in stream) required for given fields. Note | |
| 934 // that this is not the same as object size in heap. The size in | |
| 935 // heap will include size of padding/alignment bytes as well. | |
| 936 private int getSizeForFields(List fields) { | |
| 937 int size = 0; | |
| 938 for (Iterator itr = fields.iterator(); itr.hasNext();) { | |
| 939 Field field = (Field) itr.next(); | |
| 940 char typeCode = (char) field.getSignature().getByteAt(0); | |
| 941 switch (typeCode) { | |
| 942 case JVM_SIGNATURE_BOOLEAN: | |
| 943 case JVM_SIGNATURE_BYTE: | |
| 944 size++; | |
| 945 break; | |
| 946 case JVM_SIGNATURE_CHAR: | |
| 947 case JVM_SIGNATURE_SHORT: | |
| 948 size += 2; | |
| 949 break; | |
| 950 case JVM_SIGNATURE_INT: | |
| 951 case JVM_SIGNATURE_FLOAT: | |
| 952 size += 4; | |
| 953 break; | |
| 954 case JVM_SIGNATURE_CLASS: | |
| 955 case JVM_SIGNATURE_ARRAY: | |
| 956 size += OBJ_ID_SIZE; | |
| 957 break; | |
| 958 case JVM_SIGNATURE_LONG: | |
| 959 case JVM_SIGNATURE_DOUBLE: | |
| 960 size += 8; | |
| 961 break; | |
| 962 default: | |
| 963 throw new RuntimeException("should not reach here"); | |
| 964 } | |
| 965 } | |
| 966 return size; | |
| 967 } | |
| 968 | |
| 969 // We don't have allocation site info. We write a dummy | |
| 970 // stack trace with this id. | |
| 971 private static final int DUMMY_STACK_TRACE_ID = 1; | |
| 972 private static final int EMPTY_FRAME_DEPTH = -1; | |
| 973 | |
| 974 private DataOutputStream out; | |
| 975 private Debugger dbg; | |
| 976 private ObjectHeap objectHeap; | |
| 977 private SymbolTable symTbl; | |
| 978 | |
| 979 // oopSize of the debuggee | |
| 980 private int OBJ_ID_SIZE; | |
| 981 | |
| 982 private long BOOLEAN_BASE_OFFSET; | |
| 983 private long BYTE_BASE_OFFSET; | |
| 984 private long CHAR_BASE_OFFSET; | |
| 985 private long SHORT_BASE_OFFSET; | |
| 986 private long INT_BASE_OFFSET; | |
| 987 private long LONG_BASE_OFFSET; | |
| 988 private long FLOAT_BASE_OFFSET; | |
| 989 private long DOUBLE_BASE_OFFSET; | |
| 990 private long OBJECT_BASE_OFFSET; | |
| 991 | |
| 992 private long BOOLEAN_SIZE; | |
| 993 private long BYTE_SIZE; | |
| 994 private long CHAR_SIZE; | |
| 995 private long SHORT_SIZE; | |
| 996 private long INT_SIZE; | |
| 997 private long LONG_SIZE; | |
| 998 private long FLOAT_SIZE; | |
| 999 private long DOUBLE_SIZE; | |
| 1000 | |
| 1001 private static class ClassData { | |
| 1002 int instSize; | |
| 1003 List fields; | |
| 1004 ClassData(int instSize, List fields) { | |
| 1005 this.instSize = instSize; | |
| 1006 this.fields = fields; | |
| 1007 } | |
| 1008 } | |
| 1009 | |
| 1010 private Map classDataCache = new HashMap(); // <InstanceKlass, ClassData> | |
| 1011 } |