79 // Record types:
80 //
81 static final int HPROF_UTF8 = 0x01;
82 static final int HPROF_LOAD_CLASS = 0x02;
83 static final int HPROF_UNLOAD_CLASS = 0x03;
84 static final int HPROF_FRAME = 0x04;
85 static final int HPROF_TRACE = 0x05;
86 static final int HPROF_ALLOC_SITES = 0x06;
87 static final int HPROF_HEAP_SUMMARY = 0x07;
88
89 static final int HPROF_START_THREAD = 0x0a;
90 static final int HPROF_END_THREAD = 0x0b;
91
92 static final int HPROF_HEAP_DUMP = 0x0c;
93
94 static final int HPROF_CPU_SAMPLES = 0x0d;
95 static final int HPROF_CONTROL_SETTINGS = 0x0e;
96 static final int HPROF_LOCKSTATS_WAIT_TIME = 0x10;
97 static final int HPROF_LOCKSTATS_HOLD_TIME = 0x11;
98
99 static final int HPROF_GC_ROOT_UNKNOWN = 0xff;
100 static final int HPROF_GC_ROOT_JNI_GLOBAL = 0x01;
101 static final int HPROF_GC_ROOT_JNI_LOCAL = 0x02;
102 static final int HPROF_GC_ROOT_JAVA_FRAME = 0x03;
103 static final int HPROF_GC_ROOT_NATIVE_STACK = 0x04;
104 static final int HPROF_GC_ROOT_STICKY_CLASS = 0x05;
105 static final int HPROF_GC_ROOT_THREAD_BLOCK = 0x06;
106 static final int HPROF_GC_ROOT_MONITOR_USED = 0x07;
107 static final int HPROF_GC_ROOT_THREAD_OBJ = 0x08;
108
109 static final int HPROF_GC_CLASS_DUMP = 0x20;
110 static final int HPROF_GC_INSTANCE_DUMP = 0x21;
111 static final int HPROF_GC_OBJ_ARRAY_DUMP = 0x22;
112 static final int HPROF_GC_PRIM_ARRAY_DUMP = 0x23;
113
114 static final int HPROF_HEAP_DUMP_SEGMENT = 0x1c;
115 static final int HPROF_HEAP_DUMP_END = 0x2c;
116
117 private final static int T_CLASS = 2;
118
225 byte[] chars = new byte[(int)length - identifierSize];
226 in.readFully(chars);
227 names.put(id, new String(chars));
228 break;
229 }
230 case HPROF_LOAD_CLASS: {
231 int serialNo = in.readInt(); // Not used
232 long classID = readID();
233 int stackTraceSerialNo = in.readInt();
234 long classNameID = readID();
235 Long classIdI = classID;
236 String nm = getNameFromID(classNameID).replace('/', '.');
237 classNameFromObjectID.put(classIdI, nm);
238 if (classNameFromSerialNo != null) {
239 classNameFromSerialNo.put(serialNo, nm);
240 }
241 break;
242 }
243
244 case HPROF_HEAP_DUMP: {
245 if (dumpsToSkip <= 0) {
246 try {
247 readHeapDump(length, currPos);
248 } catch (EOFException exp) {
249 handleEOF(exp, snapshot);
250 }
251 if (debugLevel > 0) {
252 System.out.println(" Finished processing instances in heap dump.");
253 }
254 return snapshot;
255 } else {
256 dumpsToSkip--;
257 skipBytes(length);
258 }
259 break;
260 }
261
262 case HPROF_HEAP_DUMP_END: {
263 if (version >= VERSION_JDK6) {
264 if (dumpsToSkip <= 0) {
265 skipBytes(length); // should be no-op
266 return snapshot;
267 } else {
268 // skip this dump (of the end record for a sequence of dump segments)
269 dumpsToSkip--;
270 }
271 } else {
272 // HPROF_HEAP_DUMP_END only recognized in >= 1.0.2
273 warn("Ignoring unrecognized record type " + type);
274 }
275 skipBytes(length); // should be no-op
276 break;
277 }
278
279 case HPROF_HEAP_DUMP_SEGMENT: {
280 if (version >= VERSION_JDK6) {
281 if (dumpsToSkip <= 0) {
282 try {
283 // read the dump segment
284 readHeapDump(length, currPos);
285 } catch (EOFException exp) {
286 handleEOF(exp, snapshot);
287 }
288 } else {
289 // all segments comprising the heap dump will be skipped
290 skipBytes(length);
291 }
292 } else {
293 // HPROF_HEAP_DUMP_SEGMENT only recognized in >= 1.0.2
294 warn("Ignoring unrecognized record type " + type);
295 skipBytes(length);
296 }
297 break;
298 }
299
300 case HPROF_FRAME: {
301 if (stackFrames == null) {
335 }
336 stackTraces.put(serialNo,
337 new StackTrace(frames));
338 }
339 break;
340 }
341 case HPROF_UNLOAD_CLASS:
342 case HPROF_ALLOC_SITES:
343 case HPROF_START_THREAD:
344 case HPROF_END_THREAD:
345 case HPROF_HEAP_SUMMARY:
346 case HPROF_CPU_SAMPLES:
347 case HPROF_CONTROL_SETTINGS:
348 case HPROF_LOCKSTATS_WAIT_TIME:
349 case HPROF_LOCKSTATS_HOLD_TIME:
350 {
351 // Ignore these record types
352 skipBytes(length);
353 break;
354 }
355 default: {
356 skipBytes(length);
357 warn("Ignoring unrecognized record type " + type);
358 }
359 }
360 }
361
362 return snapshot;
363 }
364
365 public String printStackTraces() {
366 StringBuffer output = new StringBuffer();
367 for (Map.Entry<Integer, StackTrace> entry : stackTraces.entrySet()) {
368 StackFrame[] frames = entry.getValue().getFrames();
369 output.append("SerialNo " + entry.getKey() + "\n");
370 for (int i = 0; i < frames.length; i++) {
371 output.append(" " + frames[i].getClassName() + "." + frames[i].getMethodName()
372 + frames[i].getMethodSignature() + " (" + frames[i].getSourceFileName()
373 + ":" + frames[i].getLineNumber() + ")" + "\n");
374 }
835 }
836 case T_INT: {
837 primitiveSignature = (byte) 'I';
838 elSize = 4;
839 break;
840 }
841 case T_LONG: {
842 primitiveSignature = (byte) 'J';
843 elSize = 8;
844 break;
845 }
846 }
847 if (version >= VERSION_JDK12BETA4 && primitiveSignature == 0x00) {
848 throw new IOException("Unrecognized typecode: "
849 + elementClassID);
850 }
851 }
852 if (primitiveSignature != 0x00) {
853 long size = elSize * (long)num;
854 bytesRead += size;
855 JavaValueArray va = new JavaValueArray(primitiveSignature, start);
856 skipBytes(size);
857 snapshot.addHeapObject(id, va);
858 snapshot.setSiteTrace(va, stackTrace);
859 } else {
860 long sz = (long)num * identifierSize;
861 bytesRead += sz;
862 JavaObjectArray arr = new JavaObjectArray(elementClassID, start);
863 skipBytes(sz);
864 snapshot.addHeapObject(id, arr);
865 snapshot.setSiteTrace(arr, stackTrace);
866 }
867 return bytesRead;
868 }
869
870 private byte signatureFromTypeId(byte typeId) throws IOException {
871 switch (typeId) {
872 case T_CLASS: {
873 return (byte) 'L';
874 }
875 case T_BOOLEAN: {
885 return (byte) 'D';
886 }
887 case T_BYTE: {
888 return (byte) 'B';
889 }
890 case T_SHORT: {
891 return (byte) 'S';
892 }
893 case T_INT: {
894 return (byte) 'I';
895 }
896 case T_LONG: {
897 return (byte) 'J';
898 }
899 default: {
900 throw new IOException("Invalid type id of " + typeId);
901 }
902 }
903 }
904
905 private void handleEOF(EOFException exp, Snapshot snapshot) {
906 if (debugLevel > 0) {
907 exp.printStackTrace();
908 }
909 warn("Unexpected EOF. Will miss information...");
910 // we have EOF, we have to tolerate missing references
911 snapshot.setUnresolvedObjectsOK(true);
912 }
913
914 private void warn(String msg) {
915 System.out.println("WARNING: " + msg);
916 }
917
918 }
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79 // Record types:
80 //
81 static final int HPROF_UTF8 = 0x01;
82 static final int HPROF_LOAD_CLASS = 0x02;
83 static final int HPROF_UNLOAD_CLASS = 0x03;
84 static final int HPROF_FRAME = 0x04;
85 static final int HPROF_TRACE = 0x05;
86 static final int HPROF_ALLOC_SITES = 0x06;
87 static final int HPROF_HEAP_SUMMARY = 0x07;
88
89 static final int HPROF_START_THREAD = 0x0a;
90 static final int HPROF_END_THREAD = 0x0b;
91
92 static final int HPROF_HEAP_DUMP = 0x0c;
93
94 static final int HPROF_CPU_SAMPLES = 0x0d;
95 static final int HPROF_CONTROL_SETTINGS = 0x0e;
96 static final int HPROF_LOCKSTATS_WAIT_TIME = 0x10;
97 static final int HPROF_LOCKSTATS_HOLD_TIME = 0x11;
98
99 static final int HPROF_FLAT_ARRAYS = 0x12;
100 static final int HPROF_INLINED_FIELDS = 0x13;
101
102 static final int HPROF_FLAT_ARRAY = 0x01;
103 static final int HPROF_CLASS_WITH_INLINED_FIELDS = 0x01;
104
105 static final int HPROF_GC_ROOT_UNKNOWN = 0xff;
106 static final int HPROF_GC_ROOT_JNI_GLOBAL = 0x01;
107 static final int HPROF_GC_ROOT_JNI_LOCAL = 0x02;
108 static final int HPROF_GC_ROOT_JAVA_FRAME = 0x03;
109 static final int HPROF_GC_ROOT_NATIVE_STACK = 0x04;
110 static final int HPROF_GC_ROOT_STICKY_CLASS = 0x05;
111 static final int HPROF_GC_ROOT_THREAD_BLOCK = 0x06;
112 static final int HPROF_GC_ROOT_MONITOR_USED = 0x07;
113 static final int HPROF_GC_ROOT_THREAD_OBJ = 0x08;
114
115 static final int HPROF_GC_CLASS_DUMP = 0x20;
116 static final int HPROF_GC_INSTANCE_DUMP = 0x21;
117 static final int HPROF_GC_OBJ_ARRAY_DUMP = 0x22;
118 static final int HPROF_GC_PRIM_ARRAY_DUMP = 0x23;
119
120 static final int HPROF_HEAP_DUMP_SEGMENT = 0x1c;
121 static final int HPROF_HEAP_DUMP_END = 0x2c;
122
123 private final static int T_CLASS = 2;
124
231 byte[] chars = new byte[(int)length - identifierSize];
232 in.readFully(chars);
233 names.put(id, new String(chars));
234 break;
235 }
236 case HPROF_LOAD_CLASS: {
237 int serialNo = in.readInt(); // Not used
238 long classID = readID();
239 int stackTraceSerialNo = in.readInt();
240 long classNameID = readID();
241 Long classIdI = classID;
242 String nm = getNameFromID(classNameID).replace('/', '.');
243 classNameFromObjectID.put(classIdI, nm);
244 if (classNameFromSerialNo != null) {
245 classNameFromSerialNo.put(serialNo, nm);
246 }
247 break;
248 }
249
250 case HPROF_HEAP_DUMP: {
251 if (dumpsToSkip == 0) {
252 try {
253 readHeapDump(length, currPos);
254 } catch (EOFException exp) {
255 handleEOF(exp, snapshot);
256 }
257 if (debugLevel > 0) {
258 System.out.println(" Finished processing instances in heap dump.");
259 }
260 } else {
261 dumpsToSkip--;
262 skipBytes(length);
263 }
264 break;
265 }
266
267 case HPROF_HEAP_DUMP_END: {
268 if (version >= VERSION_JDK6) {
269 if (dumpsToSkip == 0) {
270 // update dumpsToSkip to skip other dumps
271 dumpsToSkip--;
272 } else {
273 // skip this dump (of the end record for a sequence of dump segments)
274 dumpsToSkip--;
275 }
276 } else {
277 // HPROF_HEAP_DUMP_END only recognized in >= 1.0.2
278 warn("Ignoring unrecognized record type " + type);
279 }
280 skipBytes(length); // should be no-op
281 break;
282 }
283
284 case HPROF_HEAP_DUMP_SEGMENT: {
285 if (version >= VERSION_JDK6) {
286 if (dumpsToSkip == 0) {
287 try {
288 // read the dump segment
289 readHeapDump(length, currPos);
290 } catch (EOFException exp) {
291 handleEOF(exp, snapshot);
292 }
293 } else {
294 // all segments comprising the heap dump will be skipped
295 skipBytes(length);
296 }
297 } else {
298 // HPROF_HEAP_DUMP_SEGMENT only recognized in >= 1.0.2
299 warn("Ignoring unrecognized record type " + type);
300 skipBytes(length);
301 }
302 break;
303 }
304
305 case HPROF_FRAME: {
306 if (stackFrames == null) {
340 }
341 stackTraces.put(serialNo,
342 new StackTrace(frames));
343 }
344 break;
345 }
346 case HPROF_UNLOAD_CLASS:
347 case HPROF_ALLOC_SITES:
348 case HPROF_START_THREAD:
349 case HPROF_END_THREAD:
350 case HPROF_HEAP_SUMMARY:
351 case HPROF_CPU_SAMPLES:
352 case HPROF_CONTROL_SETTINGS:
353 case HPROF_LOCKSTATS_WAIT_TIME:
354 case HPROF_LOCKSTATS_HOLD_TIME:
355 {
356 // Ignore these record types
357 skipBytes(length);
358 break;
359 }
360 case HPROF_FLAT_ARRAYS: {
361 readFlatArrays(length);
362 break;
363 }
364 case HPROF_INLINED_FIELDS: {
365 readInlinedFields(length);
366 break;
367 }
368
369 default: {
370 skipBytes(length);
371 warn("Ignoring unrecognized record type " + type);
372 }
373 }
374 }
375
376 return snapshot;
377 }
378
379 public String printStackTraces() {
380 StringBuffer output = new StringBuffer();
381 for (Map.Entry<Integer, StackTrace> entry : stackTraces.entrySet()) {
382 StackFrame[] frames = entry.getValue().getFrames();
383 output.append("SerialNo " + entry.getKey() + "\n");
384 for (int i = 0; i < frames.length; i++) {
385 output.append(" " + frames[i].getClassName() + "." + frames[i].getMethodName()
386 + frames[i].getMethodSignature() + " (" + frames[i].getSourceFileName()
387 + ":" + frames[i].getLineNumber() + ")" + "\n");
388 }
849 }
850 case T_INT: {
851 primitiveSignature = (byte) 'I';
852 elSize = 4;
853 break;
854 }
855 case T_LONG: {
856 primitiveSignature = (byte) 'J';
857 elSize = 8;
858 break;
859 }
860 }
861 if (version >= VERSION_JDK12BETA4 && primitiveSignature == 0x00) {
862 throw new IOException("Unrecognized typecode: "
863 + elementClassID);
864 }
865 }
866 if (primitiveSignature != 0x00) {
867 long size = elSize * (long)num;
868 bytesRead += size;
869 JavaValueArray va = new JavaValueArray(id, primitiveSignature, start);
870 skipBytes(size);
871 snapshot.addHeapObject(id, va);
872 snapshot.setSiteTrace(va, stackTrace);
873 } else {
874 long sz = (long)num * identifierSize;
875 bytesRead += sz;
876 JavaObjectArray arr = new JavaObjectArray(elementClassID, start);
877 skipBytes(sz);
878 snapshot.addHeapObject(id, arr);
879 snapshot.setSiteTrace(arr, stackTrace);
880 }
881 return bytesRead;
882 }
883
884 private byte signatureFromTypeId(byte typeId) throws IOException {
885 switch (typeId) {
886 case T_CLASS: {
887 return (byte) 'L';
888 }
889 case T_BOOLEAN: {
899 return (byte) 'D';
900 }
901 case T_BYTE: {
902 return (byte) 'B';
903 }
904 case T_SHORT: {
905 return (byte) 'S';
906 }
907 case T_INT: {
908 return (byte) 'I';
909 }
910 case T_LONG: {
911 return (byte) 'J';
912 }
913 default: {
914 throw new IOException("Invalid type id of " + typeId);
915 }
916 }
917 }
918
919 private void readFlatArrays(long length) throws IOException {
920 while (length > 0) {
921 byte tag = in.readByte();
922 length--;
923 switch (tag) {
924 case HPROF_FLAT_ARRAY: {
925 long objId = readID();
926 length -= identifierSize;
927 long elementClassId = readID();
928 length -= identifierSize;
929 snapshot.addFlatArray(objId, elementClassId);
930 break;
931 }
932 default: {
933 throw new IOException("Invalid tag " + tag);
934 }
935 }
936 }
937 }
938
939 private void readInlinedFields(long length) throws IOException {
940 while (length > 0) {
941 byte tag = in.readByte();
942 length--;
943 switch (tag) {
944 case HPROF_CLASS_WITH_INLINED_FIELDS: {
945 long classID = readID();
946 length -= identifierSize;
947 int fieldNum = in.readUnsignedShort();
948 length -= 2;
949 Snapshot.ClassInlinedFields[] fields = new Snapshot.ClassInlinedFields[fieldNum];
950 for (int i = 0; i < fieldNum; i++) {
951 int fieldIndex = in.readUnsignedShort();
952 length -= 2;
953 int synthFieldCount = in.readUnsignedShort();
954 length -= 2;
955 String fieldName = getNameFromID(readID());
956 length -= identifierSize;
957 long fieldClassId = readID();
958 length -= identifierSize;
959 fields[i] = new Snapshot.ClassInlinedFields(fieldIndex, synthFieldCount, fieldName, fieldClassId);
960 }
961 snapshot.addClassInlinedFields(classID, fields);
962 break;
963 }
964 default: {
965 throw new IOException("Invalid tag " + tag);
966 }
967 }
968 }
969 }
970
971 private void handleEOF(EOFException exp, Snapshot snapshot) {
972 if (debugLevel > 0) {
973 exp.printStackTrace();
974 }
975 warn("Unexpected EOF. Will miss information...");
976 // we have EOF, we have to tolerate missing references
977 snapshot.setUnresolvedObjectsOK(true);
978 }
979
980 private void warn(String msg) {
981 System.out.println("WARNING: " + msg);
982 }
983
984 }
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