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Diffstat (limited to 'test/lib/jdk/test/lib/hprof/parser/HprofReader.java')
-rw-r--r--test/lib/jdk/test/lib/hprof/parser/HprofReader.java909
1 files changed, 909 insertions, 0 deletions
diff --git a/test/lib/jdk/test/lib/hprof/parser/HprofReader.java b/test/lib/jdk/test/lib/hprof/parser/HprofReader.java
new file mode 100644
index 0000000..cdc505d
--- /dev/null
+++ b/test/lib/jdk/test/lib/hprof/parser/HprofReader.java
@@ -0,0 +1,909 @@
+/*
+ * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * The Original Code is HAT. The Initial Developer of the
+ * Original Code is Bill Foote, with contributions from others
+ * at JavaSoft/Sun.
+ */
+
+package jdk.test.lib.hprof.parser;
+
+import java.io.*;
+import java.util.Date;
+import java.util.Hashtable;
+import jdk.test.lib.hprof.model.ArrayTypeCodes;
+import jdk.test.lib.hprof.model.*;
+
+/**
+ * Object that's used to read a hprof file.
+ *
+ * @author Bill Foote
+ */
+
+public class HprofReader extends Reader /* imports */ implements ArrayTypeCodes {
+
+ final static int MAGIC_NUMBER = 0x4a415641;
+ // That's "JAVA", the first part of "JAVA PROFILE ..."
+ private final static String[] VERSIONS = {
+ " PROFILE 1.0\0",
+ " PROFILE 1.0.1\0",
+ " PROFILE 1.0.2\0",
+ };
+
+ private final static int VERSION_JDK12BETA3 = 0;
+ private final static int VERSION_JDK12BETA4 = 1;
+ private final static int VERSION_JDK6 = 2;
+ // These version numbers are indices into VERSIONS. The instance data
+ // member version is set to one of these, and it drives decisions when
+ // reading the file.
+ //
+ // Version 1.0.1 added HPROF_GC_PRIM_ARRAY_DUMP, which requires no
+ // version-sensitive parsing.
+ //
+ // Version 1.0.1 changed the type of a constant pool entry from a signature
+ // to a typecode.
+ //
+ // Version 1.0.2 added HPROF_HEAP_DUMP_SEGMENT and HPROF_HEAP_DUMP_END
+ // to allow a large heap to be dumped as a sequence of heap dump segments.
+ //
+ // The HPROF agent in J2SE 1.2 through to 5.0 generate a version 1.0.1
+ // file. In Java SE 6.0 the version is either 1.0.1 or 1.0.2 depending on
+ // the size of the heap (normally it will be 1.0.1 but for multi-GB
+ // heaps the heap dump will not fit in a HPROF_HEAP_DUMP record so the
+ // dump is generated as version 1.0.2).
+
+ //
+ // Record types:
+ //
+ static final int HPROF_UTF8 = 0x01;
+ static final int HPROF_LOAD_CLASS = 0x02;
+ static final int HPROF_UNLOAD_CLASS = 0x03;
+ static final int HPROF_FRAME = 0x04;
+ static final int HPROF_TRACE = 0x05;
+ static final int HPROF_ALLOC_SITES = 0x06;
+ static final int HPROF_HEAP_SUMMARY = 0x07;
+
+ static final int HPROF_START_THREAD = 0x0a;
+ static final int HPROF_END_THREAD = 0x0b;
+
+ static final int HPROF_HEAP_DUMP = 0x0c;
+
+ static final int HPROF_CPU_SAMPLES = 0x0d;
+ static final int HPROF_CONTROL_SETTINGS = 0x0e;
+ static final int HPROF_LOCKSTATS_WAIT_TIME = 0x10;
+ static final int HPROF_LOCKSTATS_HOLD_TIME = 0x11;
+
+ static final int HPROF_GC_ROOT_UNKNOWN = 0xff;
+ static final int HPROF_GC_ROOT_JNI_GLOBAL = 0x01;
+ static final int HPROF_GC_ROOT_JNI_LOCAL = 0x02;
+ static final int HPROF_GC_ROOT_JAVA_FRAME = 0x03;
+ static final int HPROF_GC_ROOT_NATIVE_STACK = 0x04;
+ static final int HPROF_GC_ROOT_STICKY_CLASS = 0x05;
+ static final int HPROF_GC_ROOT_THREAD_BLOCK = 0x06;
+ static final int HPROF_GC_ROOT_MONITOR_USED = 0x07;
+ static final int HPROF_GC_ROOT_THREAD_OBJ = 0x08;
+
+ static final int HPROF_GC_CLASS_DUMP = 0x20;
+ static final int HPROF_GC_INSTANCE_DUMP = 0x21;
+ static final int HPROF_GC_OBJ_ARRAY_DUMP = 0x22;
+ static final int HPROF_GC_PRIM_ARRAY_DUMP = 0x23;
+
+ static final int HPROF_HEAP_DUMP_SEGMENT = 0x1c;
+ static final int HPROF_HEAP_DUMP_END = 0x2c;
+
+ private final static int T_CLASS = 2;
+
+ private int version; // The version of .hprof being read
+
+ private int debugLevel;
+ private long currPos; // Current position in the file
+
+ private int dumpsToSkip;
+ private boolean callStack; // If true, read the call stack of objects
+
+ private int identifierSize; // Size, in bytes, of identifiers.
+ private Hashtable<Long, String> names;
+
+ // Hashtable<Integer, ThreadObject>, used to map the thread sequence number
+ // (aka "serial number") to the thread object ID for
+ // HPROF_GC_ROOT_THREAD_OBJ. ThreadObject is a trivial inner class,
+ // at the end of this file.
+ private Hashtable<Integer, ThreadObject> threadObjects;
+
+ // Hashtable<Long, String>, maps class object ID to class name
+ // (with / converted to .)
+ private Hashtable<Long, String> classNameFromObjectID;
+
+ // Hashtable<Integer, Integer>, maps class serial # to class object ID
+ private Hashtable<Integer, String> classNameFromSerialNo;
+
+ // Hashtable<Long, StackFrame> maps stack frame ID to StackFrame.
+ // Null if we're not tracking them.
+ private Hashtable<Long, StackFrame> stackFrames;
+
+ // Hashtable<Integer, StackTrace> maps stack frame ID to StackTrace
+ // Null if we're not tracking them.
+ private Hashtable<Integer, StackTrace> stackTraces;
+
+ private Snapshot snapshot;
+
+ public static boolean verifyMagicNumber(int numberRead) {
+ return (numberRead == MAGIC_NUMBER);
+ }
+
+ public HprofReader(String fileName, PositionDataInputStream in,
+ int dumpNumber, boolean callStack, int debugLevel)
+ throws IOException {
+ super(in);
+ RandomAccessFile file = new RandomAccessFile(fileName, "r");
+ this.snapshot = new Snapshot(MappedReadBuffer.create(file));
+ this.dumpsToSkip = dumpNumber - 1;
+ this.callStack = callStack;
+ this.debugLevel = debugLevel;
+ names = new Hashtable<Long, String>();
+ threadObjects = new Hashtable<Integer, ThreadObject>(43);
+ classNameFromObjectID = new Hashtable<Long, String>();
+ if (callStack) {
+ stackFrames = new Hashtable<Long, StackFrame>(43);
+ stackTraces = new Hashtable<Integer, StackTrace>(43);
+ classNameFromSerialNo = new Hashtable<Integer, String>();
+ }
+ }
+
+ public Snapshot read() throws IOException {
+ currPos = 4; // 4 because of the magic number
+ version = readVersionHeader();
+ identifierSize = in.readInt();
+ snapshot.setIdentifierSize(identifierSize);
+ if (version >= VERSION_JDK12BETA4) {
+ snapshot.setNewStyleArrayClass(true);
+ } else {
+ snapshot.setNewStyleArrayClass(false);
+ }
+
+ currPos += 4;
+ if (identifierSize != 4 && identifierSize != 8) {
+ 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.");
+ }
+ System.out.println("Dump file created " + (new Date(in.readLong())));
+ currPos += 8;
+
+ for (;;) {
+ int type;
+ try {
+ type = in.readUnsignedByte();
+ } catch (EOFException ignored) {
+ break;
+ }
+ in.readInt(); // Timestamp of this record
+ // Length of record: readInt() will return negative value for record
+ // length >2GB. so store 32bit value in long to keep it unsigned.
+ long length = in.readInt() & 0xffffffffL;
+ if (debugLevel > 0) {
+ System.out.println("Read record type " + type
+ + ", length " + length
+ + " at position " + toHex(currPos));
+ }
+ if (length < 0) {
+ throw new IOException("Bad record length of " + length
+ + " at byte " + toHex(currPos+5)
+ + " of file.");
+ }
+ currPos += 9 + length;
+ switch (type) {
+ case HPROF_UTF8: {
+ long id = readID();
+ byte[] chars = new byte[(int)length - identifierSize];
+ in.readFully(chars);
+ names.put(id, new String(chars));
+ break;
+ }
+ case HPROF_LOAD_CLASS: {
+ int serialNo = in.readInt(); // Not used
+ long classID = readID();
+ int stackTraceSerialNo = in.readInt();
+ long classNameID = readID();
+ Long classIdI = classID;
+ String nm = getNameFromID(classNameID).replace('/', '.');
+ classNameFromObjectID.put(classIdI, nm);
+ if (classNameFromSerialNo != null) {
+ classNameFromSerialNo.put(serialNo, nm);
+ }
+ break;
+ }
+
+ case HPROF_HEAP_DUMP: {
+ if (dumpsToSkip <= 0) {
+ try {
+ readHeapDump(length, currPos);
+ } catch (EOFException exp) {
+ handleEOF(exp, snapshot);
+ }
+ if (debugLevel > 0) {
+ System.out.println(" Finished processing instances in heap dump.");
+ }
+ return snapshot;
+ } else {
+ dumpsToSkip--;
+ skipBytes(length);
+ }
+ break;
+ }
+
+ case HPROF_HEAP_DUMP_END: {
+ if (version >= VERSION_JDK6) {
+ if (dumpsToSkip <= 0) {
+ skipBytes(length); // should be no-op
+ return snapshot;
+ } else {
+ // skip this dump (of the end record for a sequence of dump segments)
+ dumpsToSkip--;
+ }
+ } else {
+ // HPROF_HEAP_DUMP_END only recognized in >= 1.0.2
+ warn("Ignoring unrecognized record type " + type);
+ }
+ skipBytes(length); // should be no-op
+ break;
+ }
+
+ case HPROF_HEAP_DUMP_SEGMENT: {
+ if (version >= VERSION_JDK6) {
+ if (dumpsToSkip <= 0) {
+ try {
+ // read the dump segment
+ readHeapDump(length, currPos);
+ } catch (EOFException exp) {
+ handleEOF(exp, snapshot);
+ }
+ } else {
+ // all segments comprising the heap dump will be skipped
+ skipBytes(length);
+ }
+ } else {
+ // HPROF_HEAP_DUMP_SEGMENT only recognized in >= 1.0.2
+ warn("Ignoring unrecognized record type " + type);
+ skipBytes(length);
+ }
+ break;
+ }
+
+ case HPROF_FRAME: {
+ if (stackFrames == null) {
+ skipBytes(length);
+ } else {
+ long id = readID();
+ String methodName = getNameFromID(readID());
+ String methodSig = getNameFromID(readID());
+ String sourceFile = getNameFromID(readID());
+ int classSer = in.readInt();
+ String className = classNameFromSerialNo.get(classSer);
+ int lineNumber = in.readInt();
+ if (lineNumber < StackFrame.LINE_NUMBER_NATIVE) {
+ warn("Weird stack frame line number: " + lineNumber);
+ lineNumber = StackFrame.LINE_NUMBER_UNKNOWN;
+ }
+ stackFrames.put(id,
+ new StackFrame(methodName, methodSig,
+ className, sourceFile,
+ lineNumber));
+ }
+ break;
+ }
+ case HPROF_TRACE: {
+ if (stackTraces == null) {
+ skipBytes(length);
+ } else {
+ int serialNo = in.readInt();
+ int threadSeq = in.readInt(); // Not used
+ StackFrame[] frames = new StackFrame[in.readInt()];
+ for (int i = 0; i < frames.length; i++) {
+ long fid = readID();
+ frames[i] = stackFrames.get(fid);
+ if (frames[i] == null) {
+ throw new IOException("Stack frame " + toHex(fid) + " not found");
+ }
+ }
+ stackTraces.put(serialNo,
+ new StackTrace(frames));
+ }
+ break;
+ }
+ case HPROF_UNLOAD_CLASS:
+ case HPROF_ALLOC_SITES:
+ case HPROF_START_THREAD:
+ case HPROF_END_THREAD:
+ case HPROF_HEAP_SUMMARY:
+ case HPROF_CPU_SAMPLES:
+ case HPROF_CONTROL_SETTINGS:
+ case HPROF_LOCKSTATS_WAIT_TIME:
+ case HPROF_LOCKSTATS_HOLD_TIME:
+ {
+ // Ignore these record types
+ skipBytes(length);
+ break;
+ }
+ default: {
+ skipBytes(length);
+ warn("Ignoring unrecognized record type " + type);
+ }
+ }
+ }
+
+ return snapshot;
+ }
+
+ private void skipBytes(long length) throws IOException {
+ while (length > 0) {
+ long skipped = in.skip(length);
+ if (skipped == 0) {
+ // EOF or other problem, throw exception
+ throw new EOFException("Couldn't skip enough bytes");
+ }
+ length -= skipped;
+ }
+ }
+
+ private int readVersionHeader() throws IOException {
+ int candidatesLeft = VERSIONS.length;
+ boolean[] matched = new boolean[VERSIONS.length];
+ for (int i = 0; i < candidatesLeft; i++) {
+ matched[i] = true;
+ }
+
+ int pos = 0;
+ while (candidatesLeft > 0) {
+ char c = (char) in.readByte();
+ currPos++;
+ for (int i = 0; i < VERSIONS.length; i++) {
+ if (matched[i]) {
+ if (c != VERSIONS[i].charAt(pos)) { // Not matched
+ matched[i] = false;
+ --candidatesLeft;
+ } else if (pos == VERSIONS[i].length() - 1) { // Full match
+ return i;
+ }
+ }
+ }
+ ++pos;
+ }
+ throw new IOException("Version string not recognized at byte " + (pos+3));
+ }
+
+ private void readHeapDump(long bytesLeft, long posAtEnd) throws IOException {
+ while (bytesLeft > 0) {
+ int type = in.readUnsignedByte();
+ if (debugLevel > 0) {
+ System.out.println(" Read heap sub-record type " + type
+ + " at position "
+ + toHex(posAtEnd - bytesLeft));
+ }
+ bytesLeft--;
+ switch(type) {
+ case HPROF_GC_ROOT_UNKNOWN: {
+ long id = readID();
+ bytesLeft -= identifierSize;
+ snapshot.addRoot(new Root(id, 0, Root.UNKNOWN, ""));
+ break;
+ }
+ case HPROF_GC_ROOT_THREAD_OBJ: {
+ long id = readID();
+ int threadSeq = in.readInt();
+ int stackSeq = in.readInt();
+ bytesLeft -= identifierSize + 8;
+ threadObjects.put(threadSeq,
+ new ThreadObject(id, stackSeq));
+ break;
+ }
+ case HPROF_GC_ROOT_JNI_GLOBAL: {
+ long id = readID();
+ long globalRefId = readID(); // Ignored, for now
+ bytesLeft -= 2*identifierSize;
+ snapshot.addRoot(new Root(id, 0, Root.NATIVE_STATIC, ""));
+ break;
+ }
+ case HPROF_GC_ROOT_JNI_LOCAL: {
+ long id = readID();
+ int threadSeq = in.readInt();
+ int depth = in.readInt();
+ bytesLeft -= identifierSize + 8;
+ ThreadObject to = getThreadObjectFromSequence(threadSeq);
+ StackTrace st = getStackTraceFromSerial(to.stackSeq);
+ if (st != null) {
+ st = st.traceForDepth(depth+1);
+ }
+ snapshot.addRoot(new Root(id, to.threadId,
+ Root.NATIVE_LOCAL, "", st));
+ break;
+ }
+ case HPROF_GC_ROOT_JAVA_FRAME: {
+ long id = readID();
+ int threadSeq = in.readInt();
+ int depth = in.readInt();
+ bytesLeft -= identifierSize + 8;
+ ThreadObject to = getThreadObjectFromSequence(threadSeq);
+ StackTrace st = getStackTraceFromSerial(to.stackSeq);
+ if (st != null) {
+ st = st.traceForDepth(depth+1);
+ }
+ snapshot.addRoot(new Root(id, to.threadId,
+ Root.JAVA_LOCAL, "", st));
+ break;
+ }
+ case HPROF_GC_ROOT_NATIVE_STACK: {
+ long id = readID();
+ int threadSeq = in.readInt();
+ bytesLeft -= identifierSize + 4;
+ ThreadObject to = getThreadObjectFromSequence(threadSeq);
+ StackTrace st = getStackTraceFromSerial(to.stackSeq);
+ snapshot.addRoot(new Root(id, to.threadId,
+ Root.NATIVE_STACK, "", st));
+ break;
+ }
+ case HPROF_GC_ROOT_STICKY_CLASS: {
+ long id = readID();
+ bytesLeft -= identifierSize;
+ snapshot.addRoot(new Root(id, 0, Root.SYSTEM_CLASS, ""));
+ break;
+ }
+ case HPROF_GC_ROOT_THREAD_BLOCK: {
+ long id = readID();
+ int threadSeq = in.readInt();
+ bytesLeft -= identifierSize + 4;
+ ThreadObject to = getThreadObjectFromSequence(threadSeq);
+ StackTrace st = getStackTraceFromSerial(to.stackSeq);
+ snapshot.addRoot(new Root(id, to.threadId,
+ Root.THREAD_BLOCK, "", st));
+ break;
+ }
+ case HPROF_GC_ROOT_MONITOR_USED: {
+ long id = readID();
+ bytesLeft -= identifierSize;
+ snapshot.addRoot(new Root(id, 0, Root.BUSY_MONITOR, ""));
+ break;
+ }
+ case HPROF_GC_CLASS_DUMP: {
+ int bytesRead = readClass();
+ bytesLeft -= bytesRead;
+ break;
+ }
+ case HPROF_GC_INSTANCE_DUMP: {
+ int bytesRead = readInstance();
+ bytesLeft -= bytesRead;
+ break;
+ }
+ case HPROF_GC_OBJ_ARRAY_DUMP: {
+ long bytesRead = readArray(false);
+ bytesLeft -= bytesRead;
+ break;
+ }
+ case HPROF_GC_PRIM_ARRAY_DUMP: {
+ long bytesRead = readArray(true);
+ bytesLeft -= bytesRead;
+ break;
+ }
+ default: {
+ throw new IOException("Unrecognized heap dump sub-record type: " + type);
+ }
+ }
+ }
+ if (bytesLeft != 0) {
+ warn("Error reading heap dump or heap dump segment: Byte count is " + bytesLeft + " instead of 0");
+ skipBytes(bytesLeft);
+ }
+ if (debugLevel > 0) {
+ System.out.println(" Finished heap sub-records.");
+ }
+ }
+
+ private long readID() throws IOException {
+ return (identifierSize == 4)?
+ (Snapshot.SMALL_ID_MASK & (long)in.readInt()) : in.readLong();
+ }
+
+ //
+ // Read a java value. If result is non-null, it's expected to be an
+ // array of one element. We use it to fake multiple return values.
+ // @returns the number of bytes read
+ //
+ private int readValue(JavaThing[] resultArr) throws IOException {
+ byte type = in.readByte();
+ return 1 + readValueForType(type, resultArr);
+ }
+
+ private int readValueForType(byte type, JavaThing[] resultArr)
+ throws IOException {
+ if (version >= VERSION_JDK12BETA4) {
+ type = signatureFromTypeId(type);
+ }
+ return readValueForTypeSignature(type, resultArr);
+ }
+
+ private int readValueForTypeSignature(byte type, JavaThing[] resultArr)
+ throws IOException {
+ switch (type) {
+ case '[':
+ case 'L': {
+ long id = readID();
+ if (resultArr != null) {
+ resultArr[0] = new JavaObjectRef(id);
+ }
+ return identifierSize;
+ }
+ case 'Z': {
+ int b = in.readByte();
+ if (b != 0 && b != 1) {
+ warn("Illegal boolean value read");
+ }
+ if (resultArr != null) {
+ resultArr[0] = new JavaBoolean(b != 0);
+ }
+ return 1;
+ }
+ case 'B': {
+ byte b = in.readByte();
+ if (resultArr != null) {
+ resultArr[0] = new JavaByte(b);
+ }
+ return 1;
+ }
+ case 'S': {
+ short s = in.readShort();
+ if (resultArr != null) {
+ resultArr[0] = new JavaShort(s);
+ }
+ return 2;
+ }
+ case 'C': {
+ char ch = in.readChar();
+ if (resultArr != null) {
+ resultArr[0] = new JavaChar(ch);
+ }
+ return 2;
+ }
+ case 'I': {
+ int val = in.readInt();
+ if (resultArr != null) {
+ resultArr[0] = new JavaInt(val);
+ }
+ return 4;
+ }
+ case 'J': {
+ long val = in.readLong();
+ if (resultArr != null) {
+ resultArr[0] = new JavaLong(val);
+ }
+ return 8;
+ }
+ case 'F': {
+ float val = in.readFloat();
+ if (resultArr != null) {
+ resultArr[0] = new JavaFloat(val);
+ }
+ return 4;
+ }
+ case 'D': {
+ double val = in.readDouble();
+ if (resultArr != null) {
+ resultArr[0] = new JavaDouble(val);
+ }
+ return 8;
+ }
+ default: {
+ throw new IOException("Bad value signature: " + type);
+ }
+ }
+ }
+
+ private ThreadObject getThreadObjectFromSequence(int threadSeq)
+ throws IOException {
+ ThreadObject to = threadObjects.get(threadSeq);
+ if (to == null) {
+ throw new IOException("Thread " + threadSeq +
+ " not found for JNI local ref");
+ }
+ return to;
+ }
+
+ private String getNameFromID(long id) throws IOException {
+ return getNameFromID(Long.valueOf(id));
+ }
+
+ private String getNameFromID(Long id) throws IOException {
+ if (id.longValue() == 0L) {
+ return "";
+ }
+ String result = names.get(id);
+ if (result == null) {
+ warn("Name not found at " + toHex(id.longValue()));
+ return "unresolved name " + toHex(id.longValue());
+ }
+ return result;
+ }
+
+ private StackTrace getStackTraceFromSerial(int ser) throws IOException {
+ if (stackTraces == null) {
+ return null;
+ }
+ StackTrace result = stackTraces.get(ser);
+ if (result == null) {
+ warn("Stack trace not found for serial # " + ser);
+ }
+ return result;
+ }
+
+ //
+ // Handle a HPROF_GC_CLASS_DUMP
+ // Return number of bytes read
+ //
+ private int readClass() throws IOException {
+ long id = readID();
+ StackTrace stackTrace = getStackTraceFromSerial(in.readInt());
+ long superId = readID();
+ long classLoaderId = readID();
+ long signersId = readID();
+ long protDomainId = readID();
+ long reserved1 = readID();
+ long reserved2 = readID();
+ int instanceSize = in.readInt();
+ int bytesRead = 7 * identifierSize + 8;
+
+ int numConstPoolEntries = in.readUnsignedShort();
+ bytesRead += 2;
+ for (int i = 0; i < numConstPoolEntries; i++) {
+ int index = in.readUnsignedShort(); // unused
+ bytesRead += 2;
+ bytesRead += readValue(null); // We ignore the values
+ }
+
+ int numStatics = in.readUnsignedShort();
+ bytesRead += 2;
+ JavaThing[] valueBin = new JavaThing[1];
+ JavaStatic[] statics = new JavaStatic[numStatics];
+ for (int i = 0; i < numStatics; i++) {
+ long nameId = readID();
+ bytesRead += identifierSize;
+ byte type = in.readByte();
+ bytesRead++;
+ bytesRead += readValueForType(type, valueBin);
+ String fieldName = getNameFromID(nameId);
+ if (version >= VERSION_JDK12BETA4) {
+ type = signatureFromTypeId(type);
+ }
+ String signature = "" + ((char) type);
+ JavaField f = new JavaField(fieldName, signature);
+ statics[i] = new JavaStatic(f, valueBin[0]);
+ }
+
+ int numFields = in.readUnsignedShort();
+ bytesRead += 2;
+ JavaField[] fields = new JavaField[numFields];
+ for (int i = 0; i < numFields; i++) {
+ long nameId = readID();
+ bytesRead += identifierSize;
+ byte type = in.readByte();
+ bytesRead++;
+ String fieldName = getNameFromID(nameId);
+ if (version >= VERSION_JDK12BETA4) {
+ type = signatureFromTypeId(type);
+ }
+ String signature = "" + ((char) type);
+ fields[i] = new JavaField(fieldName, signature);
+ }
+ String name = classNameFromObjectID.get(id);
+ if (name == null) {
+ warn("Class name not found for " + toHex(id));
+ name = "unknown-name@" + toHex(id);
+ }
+ JavaClass c = new JavaClass(id, name, superId, classLoaderId, signersId,
+ protDomainId, fields, statics,
+ instanceSize);
+ snapshot.addClass(id, c);
+ snapshot.setSiteTrace(c, stackTrace);
+
+ return bytesRead;
+ }
+
+ private String toHex(long addr) {
+ return jdk.test.lib.hprof.util.Misc.toHex(addr);
+ }
+
+ //
+ // Handle a HPROF_GC_INSTANCE_DUMP
+ // Return number of bytes read
+ //
+ private int readInstance() throws IOException {
+ long start = in.position();
+ long id = readID();
+ StackTrace stackTrace = getStackTraceFromSerial(in.readInt());
+ long classID = readID();
+ JavaClass searchedClass = snapshot.findClass(
+ "0x" + Long.toHexString(classID));
+ if (searchedClass == null) {
+ throw new IOException(
+ "Class Record for 0x" + Long.toHexString(classID) + " not found");
+ }
+ int bytesFollowing = in.readInt();
+ int bytesRead = (2 * identifierSize) + 8 + bytesFollowing;
+ JavaObject jobj = new JavaObject(classID, start);
+ skipBytes(bytesFollowing);
+ snapshot.addHeapObject(id, jobj);
+ snapshot.setSiteTrace(jobj, stackTrace);
+ return bytesRead;
+ }
+
+ //
+ // Handle a HPROF_GC_OBJ_ARRAY_DUMP or HPROF_GC_PRIM_ARRAY_DUMP
+ // Return number of bytes read
+ //
+ private long readArray(boolean isPrimitive) throws IOException {
+ long start = in.position();
+ long id = readID();
+ StackTrace stackTrace = getStackTraceFromSerial(in.readInt());
+ int num = in.readInt();
+ long bytesRead = identifierSize + 8;
+ long elementClassID;
+ if (isPrimitive) {
+ elementClassID = in.readByte();
+ bytesRead++;
+ } else {
+ elementClassID = readID();
+ bytesRead += identifierSize;
+ }
+
+ // Check for primitive arrays:
+ byte primitiveSignature = 0x00;
+ int elSize = 0;
+ if (isPrimitive || version < VERSION_JDK12BETA4) {
+ switch ((int)elementClassID) {
+ case T_BOOLEAN: {
+ primitiveSignature = (byte) 'Z';
+ elSize = 1;
+ break;
+ }
+ case T_CHAR: {
+ primitiveSignature = (byte) 'C';
+ elSize = 2;
+ break;
+ }
+ case T_FLOAT: {
+ primitiveSignature = (byte) 'F';
+ elSize = 4;
+ break;
+ }
+ case T_DOUBLE: {
+ primitiveSignature = (byte) 'D';
+ elSize = 8;
+ break;
+ }
+ case T_BYTE: {
+ primitiveSignature = (byte) 'B';
+ elSize = 1;
+ break;
+ }
+ case T_SHORT: {
+ primitiveSignature = (byte) 'S';
+ elSize = 2;
+ break;
+ }
+ case T_INT: {
+ primitiveSignature = (byte) 'I';
+ elSize = 4;
+ break;
+ }
+ case T_LONG: {
+ primitiveSignature = (byte) 'J';
+ elSize = 8;
+ break;
+ }
+ }
+ if (version >= VERSION_JDK12BETA4 && primitiveSignature == 0x00) {
+ throw new IOException("Unrecognized typecode: "
+ + elementClassID);
+ }
+ }
+ if (primitiveSignature != 0x00) {
+ long size = elSize * (long)num;
+ bytesRead += size;
+ JavaValueArray va = new JavaValueArray(primitiveSignature, start);
+ skipBytes(size);
+ snapshot.addHeapObject(id, va);
+ snapshot.setSiteTrace(va, stackTrace);
+ } else {
+ long sz = (long)num * identifierSize;
+ bytesRead += sz;
+ JavaObjectArray arr = new JavaObjectArray(elementClassID, start);
+ skipBytes(sz);
+ snapshot.addHeapObject(id, arr);
+ snapshot.setSiteTrace(arr, stackTrace);
+ }
+ return bytesRead;
+ }
+
+ private byte signatureFromTypeId(byte typeId) throws IOException {
+ switch (typeId) {
+ case T_CLASS: {
+ return (byte) 'L';
+ }
+ case T_BOOLEAN: {
+ return (byte) 'Z';
+ }
+ case T_CHAR: {
+ return (byte) 'C';
+ }
+ case T_FLOAT: {
+ return (byte) 'F';
+ }
+ case T_DOUBLE: {
+ return (byte) 'D';
+ }
+ case T_BYTE: {
+ return (byte) 'B';
+ }
+ case T_SHORT: {
+ return (byte) 'S';
+ }
+ case T_INT: {
+ return (byte) 'I';
+ }
+ case T_LONG: {
+ return (byte) 'J';
+ }
+ default: {
+ throw new IOException("Invalid type id of " + typeId);
+ }
+ }
+ }
+
+ private void handleEOF(EOFException exp, Snapshot snapshot) {
+ if (debugLevel > 0) {
+ exp.printStackTrace();
+ }
+ warn("Unexpected EOF. Will miss information...");
+ // we have EOF, we have to tolerate missing references
+ snapshot.setUnresolvedObjectsOK(true);
+ }
+
+ private void warn(String msg) {
+ System.out.println("WARNING: " + msg);
+ }
+
+ //
+ // A trivial data-holder class for HPROF_GC_ROOT_THREAD_OBJ.
+ //
+ private class ThreadObject {
+
+ long threadId;
+ int stackSeq;
+
+ ThreadObject(long threadId, int stackSeq) {
+ this.threadId = threadId;
+ this.stackSeq = stackSeq;
+ }
+ }
+
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-19 19:47:26 +0000