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| 1 | +/* | |
| 2 | + * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. | |
| 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. Oracle designates this | |
| 8 | + * particular file as subject to the "Classpath" exception as provided | |
| 9 | + * by Oracle in the LICENSE file that accompanied this code. | |
| 10 | + * | |
| 11 | + * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 12 | + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 13 | + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 14 | + * version 2 for more details (a copy is included in the LICENSE file that | |
| 15 | + * accompanied this code). | |
| 16 | + * | |
| 17 | + * You should have received a copy of the GNU General Public License version | |
| 18 | + * 2 along with this work; if not, write to the Free Software Foundation, | |
| 19 | + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 20 | + * | |
| 21 | + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 22 | + * or visit www.oracle.com if you need additional information or have any | |
| 23 | + * questions. | |
| 24 | + */ | |
| 25 | + | |
| 26 | + | |
| 27 | +/* | |
| 28 | + * The Original Code is HAT. The Initial Developer of the | |
| 29 | + * Original Code is Bill Foote, with contributions from others | |
| 30 | + * at JavaSoft/Sun. | |
| 31 | + */ | |
| 32 | + | |
| 33 | +package com.sun.tools.hat.internal.parser; | |
| 34 | + | |
| 35 | +import java.io.*; | |
| 36 | +import java.util.Date; | |
| 37 | +import java.util.Hashtable; | |
| 38 | +import com.sun.tools.hat.internal.model.ArrayTypeCodes; | |
| 39 | +import com.sun.tools.hat.internal.model.*; | |
| 40 | + | |
| 41 | +/** | |
| 42 | + * Object that's used to read a hprof file. | |
| 43 | + * | |
| 44 | + * @author Bill Foote | |
| 45 | + */ | |
| 46 | + | |
| 47 | +public class HprofReader extends Reader /* imports */ implements ArrayTypeCodes { | |
| 48 | + | |
| 49 | + final static int MAGIC_NUMBER = 0x4a415641; | |
| 50 | + // That's "JAVA", the first part of "JAVA PROFILE ..." | |
| 51 | + private final static String[] VERSIONS = { | |
| 52 | + " PROFILE 1.0\0", | |
| 53 | + " PROFILE 1.0.1\0", | |
| 54 | + " PROFILE 1.0.2\0", | |
| 55 | + }; | |
| 56 | + | |
| 57 | + private final static int VERSION_JDK12BETA3 = 0; | |
| 58 | + private final static int VERSION_JDK12BETA4 = 1; | |
| 59 | + private final static int VERSION_JDK6 = 2; | |
| 60 | + // These version numbers are indices into VERSIONS. The instance data | |
| 61 | + // member version is set to one of these, and it drives decisions when | |
| 62 | + // reading the file. | |
| 63 | + // | |
| 64 | + // Version 1.0.1 added HPROF_GC_PRIM_ARRAY_DUMP, which requires no | |
| 65 | + // version-sensitive parsing. | |
| 66 | + // | |
| 67 | + // Version 1.0.1 changed the type of a constant pool entry from a signature | |
| 68 | + // to a typecode. | |
| 69 | + // | |
| 70 | + // Version 1.0.2 added HPROF_HEAP_DUMP_SEGMENT and HPROF_HEAP_DUMP_END | |
| 71 | + // to allow a large heap to be dumped as a sequence of heap dump segments. | |
| 72 | + // | |
| 73 | + // The HPROF agent in J2SE 1.2 through to 5.0 generate a version 1.0.1 | |
| 74 | + // file. In Java SE 6.0 the version is either 1.0.1 or 1.0.2 depending on | |
| 75 | + // the size of the heap (normally it will be 1.0.1 but for multi-GB | |
| 76 | + // heaps the heap dump will not fit in a HPROF_HEAP_DUMP record so the | |
| 77 | + // dump is generated as version 1.0.2). | |
| 78 | + | |
| 79 | + // | |
| 80 | + // Record types: | |
| 81 | + // | |
| 82 | + static final int HPROF_UTF8 = 0x01; | |
| 83 | + static final int HPROF_LOAD_CLASS = 0x02; | |
| 84 | + static final int HPROF_UNLOAD_CLASS = 0x03; | |
| 85 | + static final int HPROF_FRAME = 0x04; | |
| 86 | + static final int HPROF_TRACE = 0x05; | |
| 87 | + static final int HPROF_ALLOC_SITES = 0x06; | |
| 88 | + static final int HPROF_HEAP_SUMMARY = 0x07; | |
| 89 | + | |
| 90 | + static final int HPROF_START_THREAD = 0x0a; | |
| 91 | + static final int HPROF_END_THREAD = 0x0b; | |
| 92 | + | |
| 93 | + static final int HPROF_HEAP_DUMP = 0x0c; | |
| 94 | + | |
| 95 | + static final int HPROF_CPU_SAMPLES = 0x0d; | |
| 96 | + static final int HPROF_CONTROL_SETTINGS = 0x0e; | |
| 97 | + static final int HPROF_LOCKSTATS_WAIT_TIME = 0x10; | |
| 98 | + static final int HPROF_LOCKSTATS_HOLD_TIME = 0x11; | |
| 99 | + | |
| 100 | + static final int HPROF_GC_ROOT_UNKNOWN = 0xff; | |
| 101 | + static final int HPROF_GC_ROOT_JNI_GLOBAL = 0x01; | |
| 102 | + static final int HPROF_GC_ROOT_JNI_LOCAL = 0x02; | |
| 103 | + static final int HPROF_GC_ROOT_JAVA_FRAME = 0x03; | |
| 104 | + static final int HPROF_GC_ROOT_NATIVE_STACK = 0x04; | |
| 105 | + static final int HPROF_GC_ROOT_STICKY_CLASS = 0x05; | |
| 106 | + static final int HPROF_GC_ROOT_THREAD_BLOCK = 0x06; | |
| 107 | + static final int HPROF_GC_ROOT_MONITOR_USED = 0x07; | |
| 108 | + static final int HPROF_GC_ROOT_THREAD_OBJ = 0x08; | |
| 109 | + | |
| 110 | + static final int HPROF_GC_CLASS_DUMP = 0x20; | |
| 111 | + static final int HPROF_GC_INSTANCE_DUMP = 0x21; | |
| 112 | + static final int HPROF_GC_OBJ_ARRAY_DUMP = 0x22; | |
| 113 | + static final int HPROF_GC_PRIM_ARRAY_DUMP = 0x23; | |
| 114 | + | |
| 115 | + static final int HPROF_HEAP_DUMP_SEGMENT = 0x1c; | |
| 116 | + static final int HPROF_HEAP_DUMP_END = 0x2c; | |
| 117 | + | |
| 118 | + private final static int T_CLASS = 2; | |
| 119 | + | |
| 120 | + private int version; // The version of .hprof being read | |
| 121 | + | |
| 122 | + private int debugLevel; | |
| 123 | + private long currPos; // Current position in the file | |
| 124 | + | |
| 125 | + private int dumpsToSkip; | |
| 126 | + private boolean callStack; // If true, read the call stack of objects | |
| 127 | + | |
| 128 | + private int identifierSize; // Size, in bytes, of identifiers. | |
| 129 | + private Hashtable<Long, String> names; | |
| 130 | + | |
| 131 | + // Hashtable<Integer, ThreadObject>, used to map the thread sequence number | |
| 132 | + // (aka "serial number") to the thread object ID for | |
| 133 | + // HPROF_GC_ROOT_THREAD_OBJ. ThreadObject is a trivial inner class, | |
| 134 | + // at the end of this file. | |
| 135 | + private Hashtable<Integer, ThreadObject> threadObjects; | |
| 136 | + | |
| 137 | + // Hashtable<Long, String>, maps class object ID to class name | |
| 138 | + // (with / converted to .) | |
| 139 | + private Hashtable<Long, String> classNameFromObjectID; | |
| 140 | + | |
| 141 | + // Hashtable<Integer, Integer>, maps class serial # to class object ID | |
| 142 | + private Hashtable<Integer, String> classNameFromSerialNo; | |
| 143 | + | |
| 144 | + // Hashtable<Long, StackFrame> maps stack frame ID to StackFrame. | |
| 145 | + // Null if we're not tracking them. | |
| 146 | + private Hashtable<Long, StackFrame> stackFrames; | |
| 147 | + | |
| 148 | + // Hashtable<Integer, StackTrace> maps stack frame ID to StackTrace | |
| 149 | + // Null if we're not tracking them. | |
| 150 | + private Hashtable<Integer, StackTrace> stackTraces; | |
| 151 | + | |
| 152 | + private Snapshot snapshot; | |
| 153 | + | |
| 154 | + public HprofReader(String fileName, PositionDataInputStream in, | |
| 155 | + int dumpNumber, boolean callStack, int debugLevel) | |
| 156 | + throws IOException { | |
| 157 | + super(in); | |
| 158 | + RandomAccessFile file = new RandomAccessFile(fileName, "r"); | |
| 159 | + this.snapshot = new Snapshot(MappedReadBuffer.create(file)); | |
| 160 | + this.dumpsToSkip = dumpNumber - 1; | |
| 161 | + this.callStack = callStack; | |
| 162 | + this.debugLevel = debugLevel; | |
| 163 | + names = new Hashtable<Long, String>(); | |
| 164 | + threadObjects = new Hashtable<Integer, ThreadObject>(43); | |
| 165 | + classNameFromObjectID = new Hashtable<Long, String>(); | |
| 166 | + if (callStack) { | |
| 167 | + stackFrames = new Hashtable<Long, StackFrame>(43); | |
| 168 | + stackTraces = new Hashtable<Integer, StackTrace>(43); | |
| 169 | + classNameFromSerialNo = new Hashtable<Integer, String>(); | |
| 170 | + } | |
| 171 | + } | |
| 172 | + | |
| 173 | + public Snapshot read() throws IOException { | |
| 174 | + currPos = 4; // 4 because of the magic number | |
| 175 | + version = readVersionHeader(); | |
| 176 | + identifierSize = in.readInt(); | |
| 177 | + snapshot.setIdentifierSize(identifierSize); | |
| 178 | + if (version >= VERSION_JDK12BETA4) { | |
| 179 | + snapshot.setNewStyleArrayClass(true); | |
| 180 | + } else { | |
| 181 | + snapshot.setNewStyleArrayClass(false); | |
| 182 | + } | |
| 183 | + | |
| 184 | + currPos += 4; | |
| 185 | + if (identifierSize != 4 && identifierSize != 8) { | |
| 186 | + throw new IOException("I'm sorry, but I can't deal with an identifier size of " + identifierSize + ". I can only deal with 4 or 8."); | |
| 187 | + } | |
| 188 | + System.out.println("Dump file created " + (new Date(in.readLong()))); | |
| 189 | + currPos += 8; | |
| 190 | + | |
| 191 | + for (;;) { | |
| 192 | + int type; | |
| 193 | + try { | |
| 194 | + type = in.readUnsignedByte(); | |
| 195 | + } catch (EOFException ignored) { | |
| 196 | + break; | |
| 197 | + } | |
| 198 | + in.readInt(); // Timestamp of this record | |
| 199 | + // Length of record: readInt() will return negative value for record | |
| 200 | + // length >2GB. so store 32bit value in long to keep it unsigned. | |
| 201 | + long length = in.readInt() & 0xffffffffL; | |
| 202 | + if (debugLevel > 0) { | |
| 203 | + System.out.println("Read record type " + type | |
| 204 | + + ", length " + length | |
| 205 | + + " at position " + toHex(currPos)); | |
| 206 | + } | |
| 207 | + if (length < 0) { | |
| 208 | + throw new IOException("Bad record length of " + length | |
| 209 | + + " at byte " + toHex(currPos+5) | |
| 210 | + + " of file."); | |
| 211 | + } | |
| 212 | + currPos += 9 + length; | |
| 213 | + switch (type) { | |
| 214 | + case HPROF_UTF8: { | |
| 215 | + long id = readID(); | |
| 216 | + byte[] chars = new byte[(int)length - identifierSize]; | |
| 217 | + in.readFully(chars); | |
| 218 | + names.put(new Long(id), new String(chars)); | |
| 219 | + break; | |
| 220 | + } | |
| 221 | + case HPROF_LOAD_CLASS: { | |
| 222 | + int serialNo = in.readInt(); // Not used | |
| 223 | + long classID = readID(); | |
| 224 | + int stackTraceSerialNo = in.readInt(); | |
| 225 | + long classNameID = readID(); | |
| 226 | + Long classIdI = new Long(classID); | |
| 227 | + String nm = getNameFromID(classNameID).replace('/', '.'); | |
| 228 | + classNameFromObjectID.put(classIdI, nm); | |
| 229 | + if (classNameFromSerialNo != null) { | |
| 230 | + classNameFromSerialNo.put(new Integer(serialNo), nm); | |
| 231 | + } | |
| 232 | + break; | |
| 233 | + } | |
| 234 | + | |
| 235 | + case HPROF_HEAP_DUMP: { | |
| 236 | + if (dumpsToSkip <= 0) { | |
| 237 | + try { | |
| 238 | + readHeapDump(length, currPos); | |
| 239 | + } catch (EOFException exp) { | |
| 240 | + handleEOF(exp, snapshot); | |
| 241 | + } | |
| 242 | + if (debugLevel > 0) { | |
| 243 | + System.out.println(" Finished processing instances in heap dump."); | |
| 244 | + } | |
| 245 | + return snapshot; | |
| 246 | + } else { | |
| 247 | + dumpsToSkip--; | |
| 248 | + skipBytes(length); | |
| 249 | + } | |
| 250 | + break; | |
| 251 | + } | |
| 252 | + | |
| 253 | + case HPROF_HEAP_DUMP_END: { | |
| 254 | + if (version >= VERSION_JDK6) { | |
| 255 | + if (dumpsToSkip <= 0) { | |
| 256 | + skipBytes(length); // should be no-op | |
| 257 | + return snapshot; | |
| 258 | + } else { | |
| 259 | + // skip this dump (of the end record for a sequence of dump segments) | |
| 260 | + dumpsToSkip--; | |
| 261 | + } | |
| 262 | + } else { | |
| 263 | + // HPROF_HEAP_DUMP_END only recognized in >= 1.0.2 | |
| 264 | + warn("Ignoring unrecognized record type " + type); | |
| 265 | + } | |
| 266 | + skipBytes(length); // should be no-op | |
| 267 | + break; | |
| 268 | + } | |
| 269 | + | |
| 270 | + case HPROF_HEAP_DUMP_SEGMENT: { | |
| 271 | + if (version >= VERSION_JDK6) { | |
| 272 | + if (dumpsToSkip <= 0) { | |
| 273 | + try { | |
| 274 | + // read the dump segment | |
| 275 | + readHeapDump(length, currPos); | |
| 276 | + } catch (EOFException exp) { | |
| 277 | + handleEOF(exp, snapshot); | |
| 278 | + } | |
| 279 | + } else { | |
| 280 | + // all segments comprising the heap dump will be skipped | |
| 281 | + skipBytes(length); | |
| 282 | + } | |
| 283 | + } else { | |
| 284 | + // HPROF_HEAP_DUMP_SEGMENT only recognized in >= 1.0.2 | |
| 285 | + warn("Ignoring unrecognized record type " + type); | |
| 286 | + skipBytes(length); | |
| 287 | + } | |
| 288 | + break; | |
| 289 | + } | |
| 290 | + | |
| 291 | + case HPROF_FRAME: { | |
| 292 | + if (stackFrames == null) { | |
| 293 | + skipBytes(length); | |
| 294 | + } else { | |
| 295 | + long id = readID(); | |
| 296 | + String methodName = getNameFromID(readID()); | |
| 297 | + String methodSig = getNameFromID(readID()); | |
| 298 | + String sourceFile = getNameFromID(readID()); | |
| 299 | + int classSer = in.readInt(); | |
| 300 | + String className = classNameFromSerialNo.get(new Integer(classSer)); | |
| 301 | + int lineNumber = in.readInt(); | |
| 302 | + if (lineNumber < StackFrame.LINE_NUMBER_NATIVE) { | |
| 303 | + warn("Weird stack frame line number: " + lineNumber); | |
| 304 | + lineNumber = StackFrame.LINE_NUMBER_UNKNOWN; | |
| 305 | + } | |
| 306 | + stackFrames.put(new Long(id), | |
| 307 | + new StackFrame(methodName, methodSig, | |
| 308 | + className, sourceFile, | |
| 309 | + lineNumber)); | |
| 310 | + } | |
| 311 | + break; | |
| 312 | + } | |
| 313 | + case HPROF_TRACE: { | |
| 314 | + if (stackTraces == null) { | |
| 315 | + skipBytes(length); | |
| 316 | + } else { | |
| 317 | + int serialNo = in.readInt(); | |
| 318 | + int threadSeq = in.readInt(); // Not used | |
| 319 | + StackFrame[] frames = new StackFrame[in.readInt()]; | |
| 320 | + for (int i = 0; i < frames.length; i++) { | |
| 321 | + long fid = readID(); | |
| 322 | + frames[i] = stackFrames.get(new Long(fid)); | |
| 323 | + if (frames[i] == null) { | |
| 324 | + throw new IOException("Stack frame " + toHex(fid) + " not found"); | |
| 325 | + } | |
| 326 | + } | |
| 327 | + stackTraces.put(new Integer(serialNo), | |
| 328 | + new StackTrace(frames)); | |
| 329 | + } | |
| 330 | + break; | |
| 331 | + } | |
| 332 | + case HPROF_UNLOAD_CLASS: | |
| 333 | + case HPROF_ALLOC_SITES: | |
| 334 | + case HPROF_START_THREAD: | |
| 335 | + case HPROF_END_THREAD: | |
| 336 | + case HPROF_HEAP_SUMMARY: | |
| 337 | + case HPROF_CPU_SAMPLES: | |
| 338 | + case HPROF_CONTROL_SETTINGS: | |
| 339 | + case HPROF_LOCKSTATS_WAIT_TIME: | |
| 340 | + case HPROF_LOCKSTATS_HOLD_TIME: | |
| 341 | + { | |
| 342 | + // Ignore these record types | |
| 343 | + skipBytes(length); | |
| 344 | + break; | |
| 345 | + } | |
| 346 | + default: { | |
| 347 | + skipBytes(length); | |
| 348 | + warn("Ignoring unrecognized record type " + type); | |
| 349 | + } | |
| 350 | + } | |
| 351 | + } | |
| 352 | + | |
| 353 | + return snapshot; | |
| 354 | + } | |
| 355 | + | |
| 356 | + private void skipBytes(long length) throws IOException { | |
| 357 | + in.skipBytes((int)length); | |
| 358 | + } | |
| 359 | + | |
| 360 | + private int readVersionHeader() throws IOException { | |
| 361 | + int candidatesLeft = VERSIONS.length; | |
| 362 | + boolean[] matched = new boolean[VERSIONS.length]; | |
| 363 | + for (int i = 0; i < candidatesLeft; i++) { | |
| 364 | + matched[i] = true; | |
| 365 | + } | |
| 366 | + | |
| 367 | + int pos = 0; | |
| 368 | + while (candidatesLeft > 0) { | |
| 369 | + char c = (char) in.readByte(); | |
| 370 | + currPos++; | |
| 371 | + for (int i = 0; i < VERSIONS.length; i++) { | |
| 372 | + if (matched[i]) { | |
| 373 | + if (c != VERSIONS[i].charAt(pos)) { // Not matched | |
| 374 | + matched[i] = false; | |
| 375 | + --candidatesLeft; | |
| 376 | + } else if (pos == VERSIONS[i].length() - 1) { // Full match | |
| 377 | + return i; | |
| 378 | + } | |
| 379 | + } | |
| 380 | + } | |
| 381 | + ++pos; | |
| 382 | + } | |
| 383 | + throw new IOException("Version string not recognized at byte " + (pos+3)); | |
| 384 | + } | |
| 385 | + | |
| 386 | + private void readHeapDump(long bytesLeft, long posAtEnd) throws IOException { | |
| 387 | + while (bytesLeft > 0) { | |
| 388 | + int type = in.readUnsignedByte(); | |
| 389 | + if (debugLevel > 0) { | |
| 390 | + System.out.println(" Read heap sub-record type " + type | |
| 391 | + + " at position " | |
| 392 | + + toHex(posAtEnd - bytesLeft)); | |
| 393 | + } | |
| 394 | + bytesLeft--; | |
| 395 | + switch(type) { | |
| 396 | + case HPROF_GC_ROOT_UNKNOWN: { | |
| 397 | + long id = readID(); | |
| 398 | + bytesLeft -= identifierSize; | |
| 399 | + snapshot.addRoot(new Root(id, 0, Root.UNKNOWN, "")); | |
| 400 | + break; | |
| 401 | + } | |
| 402 | + case HPROF_GC_ROOT_THREAD_OBJ: { | |
| 403 | + long id = readID(); | |
| 404 | + int threadSeq = in.readInt(); | |
| 405 | + int stackSeq = in.readInt(); | |
| 406 | + bytesLeft -= identifierSize + 8; | |
| 407 | + threadObjects.put(new Integer(threadSeq), | |
| 408 | + new ThreadObject(id, stackSeq)); | |
| 409 | + break; | |
| 410 | + } | |
| 411 | + case HPROF_GC_ROOT_JNI_GLOBAL: { | |
| 412 | + long id = readID(); | |
| 413 | + long globalRefId = readID(); // Ignored, for now | |
| 414 | + bytesLeft -= 2*identifierSize; | |
| 415 | + snapshot.addRoot(new Root(id, 0, Root.NATIVE_STATIC, "")); | |
| 416 | + break; | |
| 417 | + } | |
| 418 | + case HPROF_GC_ROOT_JNI_LOCAL: { | |
| 419 | + long id = readID(); | |
| 420 | + int threadSeq = in.readInt(); | |
| 421 | + int depth = in.readInt(); | |
| 422 | + bytesLeft -= identifierSize + 8; | |
| 423 | + ThreadObject to = getThreadObjectFromSequence(threadSeq); | |
| 424 | + StackTrace st = getStackTraceFromSerial(to.stackSeq); | |
| 425 | + if (st != null) { | |
| 426 | + st = st.traceForDepth(depth+1); | |
| 427 | + } | |
| 428 | + snapshot.addRoot(new Root(id, to.threadId, | |
| 429 | + Root.NATIVE_LOCAL, "", st)); | |
| 430 | + break; | |
| 431 | + } | |
| 432 | + case HPROF_GC_ROOT_JAVA_FRAME: { | |
| 433 | + long id = readID(); | |
| 434 | + int threadSeq = in.readInt(); | |
| 435 | + int depth = in.readInt(); | |
| 436 | + bytesLeft -= identifierSize + 8; | |
| 437 | + ThreadObject to = getThreadObjectFromSequence(threadSeq); | |
| 438 | + StackTrace st = getStackTraceFromSerial(to.stackSeq); | |
| 439 | + if (st != null) { | |
| 440 | + st = st.traceForDepth(depth+1); | |
| 441 | + } | |
| 442 | + snapshot.addRoot(new Root(id, to.threadId, | |
| 443 | + Root.JAVA_LOCAL, "", st)); | |
| 444 | + break; | |
| 445 | + } | |
| 446 | + case HPROF_GC_ROOT_NATIVE_STACK: { | |
| 447 | + long id = readID(); | |
| 448 | + int threadSeq = in.readInt(); | |
| 449 | + bytesLeft -= identifierSize + 4; | |
| 450 | + ThreadObject to = getThreadObjectFromSequence(threadSeq); | |
| 451 | + StackTrace st = getStackTraceFromSerial(to.stackSeq); | |
| 452 | + snapshot.addRoot(new Root(id, to.threadId, | |
| 453 | + Root.NATIVE_STACK, "", st)); | |
| 454 | + break; | |
| 455 | + } | |
| 456 | + case HPROF_GC_ROOT_STICKY_CLASS: { | |
| 457 | + long id = readID(); | |
| 458 | + bytesLeft -= identifierSize; | |
| 459 | + snapshot.addRoot(new Root(id, 0, Root.SYSTEM_CLASS, "")); | |
| 460 | + break; | |
| 461 | + } | |
| 462 | + case HPROF_GC_ROOT_THREAD_BLOCK: { | |
| 463 | + long id = readID(); | |
| 464 | + int threadSeq = in.readInt(); | |
| 465 | + bytesLeft -= identifierSize + 4; | |
| 466 | + ThreadObject to = getThreadObjectFromSequence(threadSeq); | |
| 467 | + StackTrace st = getStackTraceFromSerial(to.stackSeq); | |
| 468 | + snapshot.addRoot(new Root(id, to.threadId, | |
| 469 | + Root.THREAD_BLOCK, "", st)); | |
| 470 | + break; | |
| 471 | + } | |
| 472 | + case HPROF_GC_ROOT_MONITOR_USED: { | |
| 473 | + long id = readID(); | |
| 474 | + bytesLeft -= identifierSize; | |
| 475 | + snapshot.addRoot(new Root(id, 0, Root.BUSY_MONITOR, "")); | |
| 476 | + break; | |
| 477 | + } | |
| 478 | + case HPROF_GC_CLASS_DUMP: { | |
| 479 | + int bytesRead = readClass(); | |
| 480 | + bytesLeft -= bytesRead; | |
| 481 | + break; | |
| 482 | + } | |
| 483 | + case HPROF_GC_INSTANCE_DUMP: { | |
| 484 | + int bytesRead = readInstance(); | |
| 485 | + bytesLeft -= bytesRead; | |
| 486 | + break; | |
| 487 | + } | |
| 488 | + case HPROF_GC_OBJ_ARRAY_DUMP: { | |
| 489 | + int bytesRead = readArray(false); | |
| 490 | + bytesLeft -= bytesRead; | |
| 491 | + break; | |
| 492 | + } | |
| 493 | + case HPROF_GC_PRIM_ARRAY_DUMP: { | |
| 494 | + int bytesRead = readArray(true); | |
| 495 | + bytesLeft -= bytesRead; | |
| 496 | + break; | |
| 497 | + } | |
| 498 | + default: { | |
| 499 | + throw new IOException("Unrecognized heap dump sub-record type: " + type); | |
| 500 | + } | |
| 501 | + } | |
| 502 | + } | |
| 503 | + if (bytesLeft != 0) { | |
| 504 | + warn("Error reading heap dump or heap dump segment: Byte count is " + bytesLeft + " instead of 0"); | |
| 505 | + skipBytes(bytesLeft); | |
| 506 | + } | |
| 507 | + if (debugLevel > 0) { | |
| 508 | + System.out.println(" Finished heap sub-records."); | |
| 509 | + } | |
| 510 | + } | |
| 511 | + | |
| 512 | + private long readID() throws IOException { | |
| 513 | + return (identifierSize == 4)? | |
| 514 | + (Snapshot.SMALL_ID_MASK & (long)in.readInt()) : in.readLong(); | |
| 515 | + } | |
| 516 | + | |
| 517 | + // | |
| 518 | + // Read a java value. If result is non-null, it's expected to be an | |
| 519 | + // array of one element. We use it to fake multiple return values. | |
| 520 | + // @returns the number of bytes read | |
| 521 | + // | |
| 522 | + private int readValue(JavaThing[] resultArr) throws IOException { | |
| 523 | + byte type = in.readByte(); | |
| 524 | + return 1 + readValueForType(type, resultArr); | |
| 525 | + } | |
| 526 | + | |
| 527 | + private int readValueForType(byte type, JavaThing[] resultArr) | |
| 528 | + throws IOException { | |
| 529 | + if (version >= VERSION_JDK12BETA4) { | |
| 530 | + type = signatureFromTypeId(type); | |
| 531 | + } | |
| 532 | + return readValueForTypeSignature(type, resultArr); | |
| 533 | + } | |
| 534 | + | |
| 535 | + private int readValueForTypeSignature(byte type, JavaThing[] resultArr) | |
| 536 | + throws IOException { | |
| 537 | + switch (type) { | |
| 538 | + case '[': | |
| 539 | + case 'L': { | |
| 540 | + long id = readID(); | |
| 541 | + if (resultArr != null) { | |
| 542 | + resultArr[0] = new JavaObjectRef(id); | |
| 543 | + } | |
| 544 | + return identifierSize; | |
| 545 | + } | |
| 546 | + case 'Z': { | |
| 547 | + int b = in.readByte(); | |
| 548 | + if (b != 0 && b != 1) { | |
| 549 | + warn("Illegal boolean value read"); | |
| 550 | + } | |
| 551 | + if (resultArr != null) { | |
| 552 | + resultArr[0] = new JavaBoolean(b != 0); | |
| 553 | + } | |
| 554 | + return 1; | |
| 555 | + } | |
| 556 | + case 'B': { | |
| 557 | + byte b = in.readByte(); | |
| 558 | + if (resultArr != null) { | |
| 559 | + resultArr[0] = new JavaByte(b); | |
| 560 | + } | |
| 561 | + return 1; | |
| 562 | + } | |
| 563 | + case 'S': { | |
| 564 | + short s = in.readShort(); | |
| 565 | + if (resultArr != null) { | |
| 566 | + resultArr[0] = new JavaShort(s); | |
| 567 | + } | |
| 568 | + return 2; | |
| 569 | + } | |
| 570 | + case 'C': { | |
| 571 | + char ch = in.readChar(); | |
| 572 | + if (resultArr != null) { | |
| 573 | + resultArr[0] = new JavaChar(ch); | |
| 574 | + } | |
| 575 | + return 2; | |
| 576 | + } | |
| 577 | + case 'I': { | |
| 578 | + int val = in.readInt(); | |
| 579 | + if (resultArr != null) { | |
| 580 | + resultArr[0] = new JavaInt(val); | |
| 581 | + } | |
| 582 | + return 4; | |
| 583 | + } | |
| 584 | + case 'J': { | |
| 585 | + long val = in.readLong(); | |
| 586 | + if (resultArr != null) { | |
| 587 | + resultArr[0] = new JavaLong(val); | |
| 588 | + } | |
| 589 | + return 8; | |
| 590 | + } | |
| 591 | + case 'F': { | |
| 592 | + float val = in.readFloat(); | |
| 593 | + if (resultArr != null) { | |
| 594 | + resultArr[0] = new JavaFloat(val); | |
| 595 | + } | |
| 596 | + return 4; | |
| 597 | + } | |
| 598 | + case 'D': { | |
| 599 | + double val = in.readDouble(); | |
| 600 | + if (resultArr != null) { | |
| 601 | + resultArr[0] = new JavaDouble(val); | |
| 602 | + } | |
| 603 | + return 8; | |
| 604 | + } | |
| 605 | + default: { | |
| 606 | + throw new IOException("Bad value signature: " + type); | |
| 607 | + } | |
| 608 | + } | |
| 609 | + } | |
| 610 | + | |
| 611 | + private ThreadObject getThreadObjectFromSequence(int threadSeq) | |
| 612 | + throws IOException { | |
| 613 | + ThreadObject to = threadObjects.get(new Integer(threadSeq)); | |
| 614 | + if (to == null) { | |
| 615 | + throw new IOException("Thread " + threadSeq + | |
| 616 | + " not found for JNI local ref"); | |
| 617 | + } | |
| 618 | + return to; | |
| 619 | + } | |
| 620 | + | |
| 621 | + private String getNameFromID(long id) throws IOException { | |
| 622 | + return getNameFromID(new Long(id)); | |
| 623 | + } | |
| 624 | + | |
| 625 | + private String getNameFromID(Long id) throws IOException { | |
| 626 | + if (id.longValue() == 0L) { | |
| 627 | + return ""; | |
| 628 | + } | |
| 629 | + String result = names.get(id); | |
| 630 | + if (result == null) { | |
| 631 | + warn("Name not found at " + toHex(id.longValue())); | |
| 632 | + return "unresolved name " + toHex(id.longValue()); | |
| 633 | + } | |
| 634 | + return result; | |
| 635 | + } | |
| 636 | + | |
| 637 | + private StackTrace getStackTraceFromSerial(int ser) throws IOException { | |
| 638 | + if (stackTraces == null) { | |
| 639 | + return null; | |
| 640 | + } | |
| 641 | + StackTrace result = stackTraces.get(new Integer(ser)); | |
| 642 | + if (result == null) { | |
| 643 | + warn("Stack trace not found for serial # " + ser); | |
| 644 | + } | |
| 645 | + return result; | |
| 646 | + } | |
| 647 | + | |
| 648 | + // | |
| 649 | + // Handle a HPROF_GC_CLASS_DUMP | |
| 650 | + // Return number of bytes read | |
| 651 | + // | |
| 652 | + private int readClass() throws IOException { | |
| 653 | + long id = readID(); | |
| 654 | + StackTrace stackTrace = getStackTraceFromSerial(in.readInt()); | |
| 655 | + long superId = readID(); | |
| 656 | + long classLoaderId = readID(); | |
| 657 | + long signersId = readID(); | |
| 658 | + long protDomainId = readID(); | |
| 659 | + long reserved1 = readID(); | |
| 660 | + long reserved2 = readID(); | |
| 661 | + int instanceSize = in.readInt(); | |
| 662 | + int bytesRead = 7 * identifierSize + 8; | |
| 663 | + | |
| 664 | + int numConstPoolEntries = in.readUnsignedShort(); | |
| 665 | + bytesRead += 2; | |
| 666 | + for (int i = 0; i < numConstPoolEntries; i++) { | |
| 667 | + int index = in.readUnsignedShort(); // unused | |
| 668 | + bytesRead += 2; | |
| 669 | + bytesRead += readValue(null); // We ignore the values | |
| 670 | + } | |
| 671 | + | |
| 672 | + int numStatics = in.readUnsignedShort(); | |
| 673 | + bytesRead += 2; | |
| 674 | + JavaThing[] valueBin = new JavaThing[1]; | |
| 675 | + JavaStatic[] statics = new JavaStatic[numStatics]; | |
| 676 | + for (int i = 0; i < numStatics; i++) { | |
| 677 | + long nameId = readID(); | |
| 678 | + bytesRead += identifierSize; | |
| 679 | + byte type = in.readByte(); | |
| 680 | + bytesRead++; | |
| 681 | + bytesRead += readValueForType(type, valueBin); | |
| 682 | + String fieldName = getNameFromID(nameId); | |
| 683 | + if (version >= VERSION_JDK12BETA4) { | |
| 684 | + type = signatureFromTypeId(type); | |
| 685 | + } | |
| 686 | + String signature = "" + ((char) type); | |
| 687 | + JavaField f = new JavaField(fieldName, signature); | |
| 688 | + statics[i] = new JavaStatic(f, valueBin[0]); | |
| 689 | + } | |
| 690 | + | |
| 691 | + int numFields = in.readUnsignedShort(); | |
| 692 | + bytesRead += 2; | |
| 693 | + JavaField[] fields = new JavaField[numFields]; | |
| 694 | + for (int i = 0; i < numFields; i++) { | |
| 695 | + long nameId = readID(); | |
| 696 | + bytesRead += identifierSize; | |
| 697 | + byte type = in.readByte(); | |
| 698 | + bytesRead++; | |
| 699 | + String fieldName = getNameFromID(nameId); | |
| 700 | + if (version >= VERSION_JDK12BETA4) { | |
| 701 | + type = signatureFromTypeId(type); | |
| 702 | + } | |
| 703 | + String signature = "" + ((char) type); | |
| 704 | + fields[i] = new JavaField(fieldName, signature); | |
| 705 | + } | |
| 706 | + String name = classNameFromObjectID.get(new Long(id)); | |
| 707 | + if (name == null) { | |
| 708 | + warn("Class name not found for " + toHex(id)); | |
| 709 | + name = "unknown-name@" + toHex(id); | |
| 710 | + } | |
| 711 | + JavaClass c = new JavaClass(id, name, superId, classLoaderId, signersId, | |
| 712 | + protDomainId, fields, statics, | |
| 713 | + instanceSize); | |
| 714 | + snapshot.addClass(id, c); | |
| 715 | + snapshot.setSiteTrace(c, stackTrace); | |
| 716 | + | |
| 717 | + return bytesRead; | |
| 718 | + } | |
| 719 | + | |
| 720 | + private String toHex(long addr) { | |
| 721 | + return com.sun.tools.hat.internal.util.Misc.toHex(addr); | |
| 722 | + } | |
| 723 | + | |
| 724 | + // | |
| 725 | + // Handle a HPROF_GC_INSTANCE_DUMP | |
| 726 | + // Return number of bytes read | |
| 727 | + // | |
| 728 | + private int readInstance() throws IOException { | |
| 729 | + long start = in.position(); | |
| 730 | + long id = readID(); | |
| 731 | + StackTrace stackTrace = getStackTraceFromSerial(in.readInt()); | |
| 732 | + long classID = readID(); | |
| 733 | + int bytesFollowing = in.readInt(); | |
| 734 | + int bytesRead = (2 * identifierSize) + 8 + bytesFollowing; | |
| 735 | + JavaObject jobj = new JavaObject(classID, start); | |
| 736 | + skipBytes(bytesFollowing); | |
| 737 | + snapshot.addHeapObject(id, jobj); | |
| 738 | + snapshot.setSiteTrace(jobj, stackTrace); | |
| 739 | + return bytesRead; | |
| 740 | + } | |
| 741 | + | |
| 742 | + // | |
| 743 | + // Handle a HPROF_GC_OBJ_ARRAY_DUMP or HPROF_GC_PRIM_ARRAY_DUMP | |
| 744 | + // Return number of bytes read | |
| 745 | + // | |
| 746 | + private int readArray(boolean isPrimitive) throws IOException { | |
| 747 | + long start = in.position(); | |
| 748 | + long id = readID(); | |
| 749 | + StackTrace stackTrace = getStackTraceFromSerial(in.readInt()); | |
| 750 | + int num = in.readInt(); | |
| 751 | + int bytesRead = identifierSize + 8; | |
| 752 | + long elementClassID; | |
| 753 | + if (isPrimitive) { | |
| 754 | + elementClassID = in.readByte(); | |
| 755 | + bytesRead++; | |
| 756 | + } else { | |
| 757 | + elementClassID = readID(); | |
| 758 | + bytesRead += identifierSize; | |
| 759 | + } | |
| 760 | + | |
| 761 | + // Check for primitive arrays: | |
| 762 | + byte primitiveSignature = 0x00; | |
| 763 | + int elSize = 0; | |
| 764 | + if (isPrimitive || version < VERSION_JDK12BETA4) { | |
| 765 | + switch ((int)elementClassID) { | |
| 766 | + case T_BOOLEAN: { | |
| 767 | + primitiveSignature = (byte) 'Z'; | |
| 768 | + elSize = 1; | |
| 769 | + break; | |
| 770 | + } | |
| 771 | + case T_CHAR: { | |
| 772 | + primitiveSignature = (byte) 'C'; | |
| 773 | + elSize = 2; | |
| 774 | + break; | |
| 775 | + } | |
| 776 | + case T_FLOAT: { | |
| 777 | + primitiveSignature = (byte) 'F'; | |
| 778 | + elSize = 4; | |
| 779 | + break; | |
| 780 | + } | |
| 781 | + case T_DOUBLE: { | |
| 782 | + primitiveSignature = (byte) 'D'; | |
| 783 | + elSize = 8; | |
| 784 | + break; | |
| 785 | + } | |
| 786 | + case T_BYTE: { | |
| 787 | + primitiveSignature = (byte) 'B'; | |
| 788 | + elSize = 1; | |
| 789 | + break; | |
| 790 | + } | |
| 791 | + case T_SHORT: { | |
| 792 | + primitiveSignature = (byte) 'S'; | |
| 793 | + elSize = 2; | |
| 794 | + break; | |
| 795 | + } | |
| 796 | + case T_INT: { | |
| 797 | + primitiveSignature = (byte) 'I'; | |
| 798 | + elSize = 4; | |
| 799 | + break; | |
| 800 | + } | |
| 801 | + case T_LONG: { | |
| 802 | + primitiveSignature = (byte) 'J'; | |
| 803 | + elSize = 8; | |
| 804 | + break; | |
| 805 | + } | |
| 806 | + } | |
| 807 | + if (version >= VERSION_JDK12BETA4 && primitiveSignature == 0x00) { | |
| 808 | + throw new IOException("Unrecognized typecode: " | |
| 809 | + + elementClassID); | |
| 810 | + } | |
| 811 | + } | |
| 812 | + if (primitiveSignature != 0x00) { | |
| 813 | + int size = elSize * num; | |
| 814 | + bytesRead += size; | |
| 815 | + JavaValueArray va = new JavaValueArray(primitiveSignature, start); | |
| 816 | + skipBytes(size); | |
| 817 | + snapshot.addHeapObject(id, va); | |
| 818 | + snapshot.setSiteTrace(va, stackTrace); | |
| 819 | + } else { | |
| 820 | + int sz = num * identifierSize; | |
| 821 | + bytesRead += sz; | |
| 822 | + JavaObjectArray arr = new JavaObjectArray(elementClassID, start); | |
| 823 | + skipBytes(sz); | |
| 824 | + snapshot.addHeapObject(id, arr); | |
| 825 | + snapshot.setSiteTrace(arr, stackTrace); | |
| 826 | + } | |
| 827 | + return bytesRead; | |
| 828 | + } | |
| 829 | + | |
| 830 | + private byte signatureFromTypeId(byte typeId) throws IOException { | |
| 831 | + switch (typeId) { | |
| 832 | + case T_CLASS: { | |
| 833 | + return (byte) 'L'; | |
| 834 | + } | |
| 835 | + case T_BOOLEAN: { | |
| 836 | + return (byte) 'Z'; | |
| 837 | + } | |
| 838 | + case T_CHAR: { | |
| 839 | + return (byte) 'C'; | |
| 840 | + } | |
| 841 | + case T_FLOAT: { | |
| 842 | + return (byte) 'F'; | |
| 843 | + } | |
| 844 | + case T_DOUBLE: { | |
| 845 | + return (byte) 'D'; | |
| 846 | + } | |
| 847 | + case T_BYTE: { | |
| 848 | + return (byte) 'B'; | |
| 849 | + } | |
| 850 | + case T_SHORT: { | |
| 851 | + return (byte) 'S'; | |
| 852 | + } | |
| 853 | + case T_INT: { | |
| 854 | + return (byte) 'I'; | |
| 855 | + } | |
| 856 | + case T_LONG: { | |
| 857 | + return (byte) 'J'; | |
| 858 | + } | |
| 859 | + default: { | |
| 860 | + throw new IOException("Invalid type id of " + typeId); | |
| 861 | + } | |
| 862 | + } | |
| 863 | + } | |
| 864 | + | |
| 865 | + private void handleEOF(EOFException exp, Snapshot snapshot) { | |
| 866 | + if (debugLevel > 0) { | |
| 867 | + exp.printStackTrace(); | |
| 868 | + } | |
| 869 | + warn("Unexpected EOF. Will miss information..."); | |
| 870 | + // we have EOF, we have to tolerate missing references | |
| 871 | + snapshot.setUnresolvedObjectsOK(true); | |
| 872 | + } | |
| 873 | + | |
| 874 | + private void warn(String msg) { | |
| 875 | + System.out.println("WARNING: " + msg); | |
| 876 | + } | |
| 877 | + | |
| 878 | + // | |
| 879 | + // A trivial data-holder class for HPROF_GC_ROOT_THREAD_OBJ. | |
| 880 | + // | |
| 881 | + private class ThreadObject { | |
| 882 | + | |
| 883 | + long threadId; | |
| 884 | + int stackSeq; | |
| 885 | + | |
| 886 | + ThreadObject(long threadId, int stackSeq) { | |
| 887 | + this.threadId = threadId; | |
| 888 | + this.stackSeq = stackSeq; | |
| 889 | + } | |
| 890 | + } | |
| 891 | + | |
| 892 | +} | |