1345 } else {
1346 // Returns -1 if no LineNumberTable, and otherwise actual line number
1347 line_number = method->line_number_from_bci(bci);
1348 if (line_number == -1 && ShowHiddenFrames) {
1349 line_number = bci + 1000000;
1350 }
1351 }
1352 return line_number;
1353 }
1354
1355 // This class provides a simple wrapper over the internal structure of
1356 // exception backtrace to insulate users of the backtrace from needing
1357 // to know what it looks like.
1358 class BacktraceBuilder: public StackObj {
1359 private:
1360 Handle _backtrace;
1361 objArrayOop _head;
1362 typeArrayOop _methods;
1363 typeArrayOop _bcis;
1364 objArrayOop _mirrors;
1365 typeArrayOop _cprefs; // needed to insulate method name against redefinition
1366 int _index;
1367 No_Safepoint_Verifier _nsv;
1368
1369 public:
1370
1371 enum {
1372 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1373 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1374 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1375 trace_cprefs_offset = java_lang_Throwable::trace_cprefs_offset,
1376 trace_next_offset = java_lang_Throwable::trace_next_offset,
1377 trace_size = java_lang_Throwable::trace_size,
1378 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1379 };
1380
1381 // get info out of chunks
1382 static typeArrayOop get_methods(objArrayHandle chunk) {
1383 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1384 assert(methods != NULL, "method array should be initialized in backtrace");
1385 return methods;
1386 }
1387 static typeArrayOop get_bcis(objArrayHandle chunk) {
1388 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1389 assert(bcis != NULL, "bci array should be initialized in backtrace");
1390 return bcis;
1391 }
1392 static objArrayOop get_mirrors(objArrayHandle chunk) {
1393 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1394 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1395 return mirrors;
1396 }
1397 static typeArrayOop get_cprefs(objArrayHandle chunk) {
1398 typeArrayOop cprefs = typeArrayOop(chunk->obj_at(trace_cprefs_offset));
1399 assert(cprefs != NULL, "cprefs array should be initialized in backtrace");
1400 return cprefs;
1401 }
1402
1403 // constructor for new backtrace
1404 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _cprefs(NULL) {
1405 expand(CHECK);
1406 _backtrace = _head;
1407 _index = 0;
1408 }
1409
1410 BacktraceBuilder(objArrayHandle backtrace) {
1411 _methods = get_methods(backtrace);
1412 _bcis = get_bcis(backtrace);
1413 _mirrors = get_mirrors(backtrace);
1414 _cprefs = get_cprefs(backtrace);
1415 assert(_methods->length() == _bcis->length() &&
1416 _methods->length() == _mirrors->length(),
1417 "method and source information arrays should match");
1418
1419 // head is the preallocated backtrace
1420 _backtrace = _head = backtrace();
1421 _index = 0;
1422 }
1423
1424 void expand(TRAPS) {
1425 objArrayHandle old_head(THREAD, _head);
1426 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1427
1428 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1429 objArrayHandle new_head(THREAD, head);
1430
1431 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1432 typeArrayHandle new_methods(THREAD, methods);
1433
1434 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1435 typeArrayHandle new_bcis(THREAD, bcis);
1436
1437 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1438 objArrayHandle new_mirrors(THREAD, mirrors);
1439
1440 typeArrayOop cprefs = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1441 typeArrayHandle new_cprefs(THREAD, cprefs);
1442
1443 if (!old_head.is_null()) {
1444 old_head->obj_at_put(trace_next_offset, new_head());
1445 }
1446 new_head->obj_at_put(trace_methods_offset, new_methods());
1447 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1448 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1449 new_head->obj_at_put(trace_cprefs_offset, new_cprefs());
1450
1451 _head = new_head();
1452 _methods = new_methods();
1453 _bcis = new_bcis();
1454 _mirrors = new_mirrors();
1455 _cprefs = new_cprefs();
1456 _index = 0;
1457 }
1458
1459 oop backtrace() {
1460 return _backtrace();
1461 }
1462
1463 inline void push(Method* method, int bci, TRAPS) {
1464 // Smear the -1 bci to 0 since the array only holds unsigned
1465 // shorts. The later line number lookup would just smear the -1
1466 // to a 0 even if it could be recorded.
1467 if (bci == SynchronizationEntryBCI) bci = 0;
1468
1469 if (_index >= trace_chunk_size) {
1470 methodHandle mhandle(THREAD, method);
1471 expand(CHECK);
1472 method = mhandle();
1473 }
1474
1475 _methods->short_at_put(_index, method->orig_method_idnum());
1476 _bcis->int_at_put(_index, merge_bci_and_version(bci, method->constants()->version()));
1477 _cprefs->short_at_put(_index, method->name_index());
1478
1479 // We need to save the mirrors in the backtrace to keep the class
1480 // from being unloaded while we still have this stack trace.
1481 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1482 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1483 _index++;
1484 }
1485
1486 };
1487
1488 Symbol* get_source_file_name(InstanceKlass* holder, int version) {
1489 // Find the specific ik version that contains this source_file_name_index
1490 // via the previous versions list, but use the current version's
1491 // constant pool to look it up. The previous version's index has been
1492 // merged for the current constant pool.
1493 InstanceKlass* ik = holder->get_klass_version(version);
1494 // This version has been cleaned up.
1495 if (ik == NULL) return NULL;
1496 int source_file_name_index = ik->source_file_name_index();
1497 return (source_file_name_index == 0) ?
1498 (Symbol*)NULL : holder->constants()->symbol_at(source_file_name_index);
1499 }
1500
1501 // Print stack trace element to resource allocated buffer
1502 char* java_lang_Throwable::print_stack_element_to_buffer(Handle mirror,
1503 int method_id, int version, int bci, int cpref) {
1504
1505 // Get strings and string lengths
1506 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1507 const char* klass_name = holder->external_name();
1508 int buf_len = (int)strlen(klass_name);
1509
1510 Method* method = holder->method_with_orig_idnum(method_id, version);
1511
1512 // The method can be NULL if the requested class version is gone
1513 Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
1514 char* method_name = sym->as_C_string();
1515 buf_len += (int)strlen(method_name);
1516
1517 char* source_file_name = NULL;
1518 Symbol* source = get_source_file_name(holder, version);
1519 if (source != NULL) {
1520 source_file_name = source->as_C_string();
1521 buf_len += (int)strlen(source_file_name);
1522 }
1523
1524 // Allocate temporary buffer with extra space for formatting and line number
1525 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1526
1527 // Print stack trace line in buffer
1528 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1529
1530 if (!version_matches(method, version)) {
1531 strcat(buf, "(Redefined)");
1532 } else {
1533 int line_number = get_line_number(method, bci);
1534 if (line_number == -2) {
1537 if (source_file_name != NULL && (line_number != -1)) {
1538 // Sourcename and linenumber
1539 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1540 } else if (source_file_name != NULL) {
1541 // Just sourcename
1542 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1543 } else {
1544 // Neither sourcename nor linenumber
1545 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1546 }
1547 nmethod* nm = method->code();
1548 if (WizardMode && nm != NULL) {
1549 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1550 }
1551 }
1552 }
1553
1554 return buf;
1555 }
1556
1557 void java_lang_Throwable::print_stack_element(outputStream *st, Handle mirror,
1558 int method_id, int version, int bci, int cpref) {
1559 ResourceMark rm;
1560 char* buf = print_stack_element_to_buffer(mirror, method_id, version, bci, cpref);
1561 st->print_cr("%s", buf);
1562 }
1563
1564 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
1565 Handle mirror = method->method_holder()->java_mirror();
1566 int method_id = method->orig_method_idnum();
1567 int version = method->constants()->version();
1568 int cpref = method->name_index();
1569 print_stack_element(st, mirror, method_id, version, bci, cpref);
1570 }
1571
1572 const char* java_lang_Throwable::no_stack_trace_message() {
1573 return "\t<<no stack trace available>>";
1574 }
1575
1576
1577 // Currently used only for exceptions occurring during startup
1578 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1579 Thread *THREAD = Thread::current();
1580 Handle h_throwable(THREAD, throwable);
1581 while (h_throwable.not_null()) {
1582 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1583 if (result.is_null()) {
1584 st->print_raw_cr(no_stack_trace_message());
1585 return;
1586 }
1587
1588 while (result.not_null()) {
1589
1590 // Get method id, bci, version and mirror from chunk
1591 typeArrayHandle methods (THREAD, BacktraceBuilder::get_methods(result));
1592 typeArrayHandle bcis (THREAD, BacktraceBuilder::get_bcis(result));
1593 objArrayHandle mirrors (THREAD, BacktraceBuilder::get_mirrors(result));
1594 typeArrayHandle cprefs (THREAD, BacktraceBuilder::get_cprefs(result));
1595
1596 int length = methods()->length();
1597 for (int index = 0; index < length; index++) {
1598 Handle mirror(THREAD, mirrors->obj_at(index));
1599 // NULL mirror means end of stack trace
1600 if (mirror.is_null()) goto handle_cause;
1601 int method = methods->short_at(index);
1602 int version = version_at(bcis->int_at(index));
1603 int bci = bci_at(bcis->int_at(index));
1604 int cpref = cprefs->short_at(index);
1605 print_stack_element(st, mirror, method, version, bci, cpref);
1606 }
1607 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1608 }
1609 handle_cause:
1610 {
1611 EXCEPTION_MARK;
1612 JavaValue cause(T_OBJECT);
1613 JavaCalls::call_virtual(&cause,
1614 h_throwable,
1615 KlassHandle(THREAD, h_throwable->klass()),
1616 vmSymbols::getCause_name(),
1617 vmSymbols::void_throwable_signature(),
1618 THREAD);
1619 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1620 if (HAS_PENDING_EXCEPTION) {
1621 CLEAR_PENDING_EXCEPTION;
1622 h_throwable = Handle();
1623 } else {
1624 h_throwable = Handle(THREAD, (oop) cause.get_jobject());
1625 if (h_throwable.not_null()) {
1861
1862
1863 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1864 if (throwable == NULL) {
1865 THROW_0(vmSymbols::java_lang_NullPointerException());
1866 }
1867 if (index < 0) {
1868 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1869 }
1870 // Compute how many chunks to skip and index into actual chunk
1871 objArrayOop chunk = objArrayOop(backtrace(throwable));
1872 int skip_chunks = index / trace_chunk_size;
1873 int chunk_index = index % trace_chunk_size;
1874 while (chunk != NULL && skip_chunks > 0) {
1875 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1876 skip_chunks--;
1877 }
1878 if (chunk == NULL) {
1879 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1880 }
1881 // Get method id, bci, version, mirror and cpref from chunk
1882 typeArrayOop methods = BacktraceBuilder::get_methods(chunk);
1883 typeArrayOop bcis = BacktraceBuilder::get_bcis(chunk);
1884 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
1885 typeArrayOop cprefs = BacktraceBuilder::get_cprefs(chunk);
1886
1887 assert(methods != NULL && bcis != NULL && mirrors != NULL, "sanity check");
1888
1889 int method = methods->short_at(chunk_index);
1890 int version = version_at(bcis->int_at(chunk_index));
1891 int bci = bci_at(bcis->int_at(chunk_index));
1892 int cpref = cprefs->short_at(chunk_index);
1893 Handle mirror(THREAD, mirrors->obj_at(chunk_index));
1894
1895 // Chunk can be partial full
1896 if (mirror.is_null()) {
1897 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1898 }
1899 oop element = java_lang_StackTraceElement::create(mirror, method, version, bci, cpref, CHECK_0);
1900 return element;
1901 }
1902
1903 oop java_lang_StackTraceElement::create(Handle mirror, int method_id,
1904 int version, int bci, int cpref, TRAPS) {
1905 // Allocate java.lang.StackTraceElement instance
1906 Klass* k = SystemDictionary::StackTraceElement_klass();
1907 assert(k != NULL, "must be loaded in 1.4+");
1908 instanceKlassHandle ik (THREAD, k);
1909 if (ik->should_be_initialized()) {
1910 ik->initialize(CHECK_0);
1911 }
1912
1913 Handle element = ik->allocate_instance_handle(CHECK_0);
1914 // Fill in class name
1915 ResourceMark rm(THREAD);
1916 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1917 const char* str = holder->external_name();
1918 oop classname = StringTable::intern((char*) str, CHECK_0);
1919 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1920
1921 Method* method = holder->method_with_orig_idnum(method_id, version);
1922
1923 // The method can be NULL if the requested class version is gone
1924 Symbol* sym = (method != NULL) ? method->name() : holder->constants()->symbol_at(cpref);
1925
1926 // Fill in method name
1927 oop methodname = StringTable::intern(sym, CHECK_0);
1928 java_lang_StackTraceElement::set_methodName(element(), methodname);
1929
1930 if (!version_matches(method, version)) {
1931 // The method was redefined, accurate line number information isn't available
1932 java_lang_StackTraceElement::set_fileName(element(), NULL);
1933 java_lang_StackTraceElement::set_lineNumber(element(), -1);
1934 } else {
1935 // Fill in source file name and line number.
1936 Symbol* source = get_source_file_name(holder, version);
1937 if (ShowHiddenFrames && source == NULL)
1938 source = vmSymbols::unknown_class_name();
1939 oop filename = StringTable::intern(source, CHECK_0);
1940 java_lang_StackTraceElement::set_fileName(element(), filename);
1941
1942 int line_number = get_line_number(method, bci);
1943 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1944 }
1945 return element();
1946 }
1947
1948 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
1949 Handle mirror (THREAD, method->method_holder()->java_mirror());
1950 int method_id = method->orig_method_idnum();
1951 int cpref = method->name_index();
1952 return create(mirror, method_id, method->constants()->version(), bci, cpref, THREAD);
1953 }
1954
1955 void java_lang_reflect_AccessibleObject::compute_offsets() {
1956 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
1957 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1958 }
1959
1960 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1961 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1962 return (jboolean) reflect->bool_field(override_offset);
1963 }
1964
1965 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1966 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1967 reflect->bool_field_put(override_offset, (int) value);
1968 }
1969
1970 void java_lang_reflect_Method::compute_offsets() {
1971 Klass* k = SystemDictionary::reflect_Method_klass();
1972 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
|
1345 } else {
1346 // Returns -1 if no LineNumberTable, and otherwise actual line number
1347 line_number = method->line_number_from_bci(bci);
1348 if (line_number == -1 && ShowHiddenFrames) {
1349 line_number = bci + 1000000;
1350 }
1351 }
1352 return line_number;
1353 }
1354
1355 // This class provides a simple wrapper over the internal structure of
1356 // exception backtrace to insulate users of the backtrace from needing
1357 // to know what it looks like.
1358 class BacktraceBuilder: public StackObj {
1359 private:
1360 Handle _backtrace;
1361 objArrayOop _head;
1362 typeArrayOop _methods;
1363 typeArrayOop _bcis;
1364 objArrayOop _mirrors;
1365 typeArrayOop _names; // needed to insulate method name against redefinition
1366 int _index;
1367 No_Safepoint_Verifier _nsv;
1368
1369 public:
1370
1371 enum {
1372 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
1373 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
1374 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
1375 trace_names_offset = java_lang_Throwable::trace_names_offset,
1376 trace_next_offset = java_lang_Throwable::trace_next_offset,
1377 trace_size = java_lang_Throwable::trace_size,
1378 trace_chunk_size = java_lang_Throwable::trace_chunk_size
1379 };
1380
1381 // get info out of chunks
1382 static typeArrayOop get_methods(objArrayHandle chunk) {
1383 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
1384 assert(methods != NULL, "method array should be initialized in backtrace");
1385 return methods;
1386 }
1387 static typeArrayOop get_bcis(objArrayHandle chunk) {
1388 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
1389 assert(bcis != NULL, "bci array should be initialized in backtrace");
1390 return bcis;
1391 }
1392 static objArrayOop get_mirrors(objArrayHandle chunk) {
1393 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
1394 assert(mirrors != NULL, "mirror array should be initialized in backtrace");
1395 return mirrors;
1396 }
1397 static typeArrayOop get_names(objArrayHandle chunk) {
1398 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
1399 assert(names != NULL, "names array should be initialized in backtrace");
1400 return names;
1401 }
1402
1403 // constructor for new backtrace
1404 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL), _names(NULL) {
1405 expand(CHECK);
1406 _backtrace = _head;
1407 _index = 0;
1408 }
1409
1410 BacktraceBuilder(objArrayHandle backtrace) {
1411 _methods = get_methods(backtrace);
1412 _bcis = get_bcis(backtrace);
1413 _mirrors = get_mirrors(backtrace);
1414 _names = get_names(backtrace);
1415 assert(_methods->length() == _bcis->length() &&
1416 _methods->length() == _mirrors->length(),
1417 "method and source information arrays should match");
1418
1419 // head is the preallocated backtrace
1420 _backtrace = _head = backtrace();
1421 _index = 0;
1422 }
1423
1424 void expand(TRAPS) {
1425 objArrayHandle old_head(THREAD, _head);
1426 Pause_No_Safepoint_Verifier pnsv(&_nsv);
1427
1428 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
1429 objArrayHandle new_head(THREAD, head);
1430
1431 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
1432 typeArrayHandle new_methods(THREAD, methods);
1433
1434 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
1435 typeArrayHandle new_bcis(THREAD, bcis);
1436
1437 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
1438 objArrayHandle new_mirrors(THREAD, mirrors);
1439
1440 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
1441 typeArrayHandle new_names(THREAD, names);
1442
1443 if (!old_head.is_null()) {
1444 old_head->obj_at_put(trace_next_offset, new_head());
1445 }
1446 new_head->obj_at_put(trace_methods_offset, new_methods());
1447 new_head->obj_at_put(trace_bcis_offset, new_bcis());
1448 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
1449 new_head->obj_at_put(trace_names_offset, new_names());
1450
1451 _head = new_head();
1452 _methods = new_methods();
1453 _bcis = new_bcis();
1454 _mirrors = new_mirrors();
1455 _names = new_names();
1456 _index = 0;
1457 }
1458
1459 oop backtrace() {
1460 return _backtrace();
1461 }
1462
1463 inline void push(Method* method, int bci, TRAPS) {
1464 // Smear the -1 bci to 0 since the array only holds unsigned
1465 // shorts. The later line number lookup would just smear the -1
1466 // to a 0 even if it could be recorded.
1467 if (bci == SynchronizationEntryBCI) bci = 0;
1468
1469 if (_index >= trace_chunk_size) {
1470 methodHandle mhandle(THREAD, method);
1471 expand(CHECK);
1472 method = mhandle();
1473 }
1474
1475 _methods->short_at_put(_index, method->orig_method_idnum());
1476 _bcis->int_at_put(_index, merge_bci_and_version(bci, method->constants()->version()));
1477 // We can store Symbol* in the backtrace without additional refcounting because the
1478 // Symbol* for the name is kept alive because the class containing the method is kept
1479 // alive via. the mirror. Since redefinition does not allow deleting methods, the new
1480 // class will also have this name, somewhere, maybe not at the same constant pool index.
1481 _names->symbol_at_put(_index, method->name());
1482
1483 // We need to save the mirrors in the backtrace to keep the class
1484 // from being unloaded while we still have this stack trace.
1485 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror");
1486 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror());
1487 _index++;
1488 }
1489
1490 };
1491
1492 Symbol* get_source_file_name(InstanceKlass* holder, int version) {
1493 // Find the specific ik version that contains this source_file_name_index
1494 // via the previous versions list, but use the current version's
1495 // constant pool to look it up. The previous version's index has been
1496 // merged for the current constant pool.
1497 InstanceKlass* ik = holder->get_klass_version(version);
1498 // This version has been cleaned up.
1499 if (ik == NULL) return NULL;
1500 int source_file_name_index = ik->source_file_name_index();
1501 return (source_file_name_index == 0) ?
1502 (Symbol*)NULL : holder->constants()->symbol_at(source_file_name_index);
1503 }
1504
1505 // Print stack trace element to resource allocated buffer
1506 char* print_stack_element_to_buffer(Handle mirror, int method_id, int version, int bci, Symbol* name) {
1507
1508 // Get strings and string lengths
1509 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1510 const char* klass_name = holder->external_name();
1511 int buf_len = (int)strlen(klass_name);
1512
1513 Method* method = holder->method_with_orig_idnum(method_id, version);
1514
1515 char* method_name = name->as_C_string();
1516 buf_len += (int)strlen(method_name);
1517
1518 char* source_file_name = NULL;
1519 Symbol* source = get_source_file_name(holder, version);
1520 if (source != NULL) {
1521 source_file_name = source->as_C_string();
1522 buf_len += (int)strlen(source_file_name);
1523 }
1524
1525 // Allocate temporary buffer with extra space for formatting and line number
1526 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64);
1527
1528 // Print stack trace line in buffer
1529 sprintf(buf, "\tat %s.%s", klass_name, method_name);
1530
1531 if (!version_matches(method, version)) {
1532 strcat(buf, "(Redefined)");
1533 } else {
1534 int line_number = get_line_number(method, bci);
1535 if (line_number == -2) {
1538 if (source_file_name != NULL && (line_number != -1)) {
1539 // Sourcename and linenumber
1540 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number);
1541 } else if (source_file_name != NULL) {
1542 // Just sourcename
1543 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name);
1544 } else {
1545 // Neither sourcename nor linenumber
1546 sprintf(buf + (int)strlen(buf), "(Unknown Source)");
1547 }
1548 nmethod* nm = method->code();
1549 if (WizardMode && nm != NULL) {
1550 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm);
1551 }
1552 }
1553 }
1554
1555 return buf;
1556 }
1557
1558 void print_stack_element_internal(outputStream *st, Handle mirror,
1559 int method_id, int version, int bci, Symbol* name) {
1560 ResourceMark rm;
1561 char* buf = print_stack_element_to_buffer(mirror, method_id, version, bci, name);
1562 st->print_cr("%s", buf);
1563 }
1564
1565 void java_lang_Throwable::print_stack_element(outputStream *st, const methodHandle& method, int bci) {
1566 Handle mirror = method->method_holder()->java_mirror();
1567 int method_id = method->orig_method_idnum();
1568 int version = method->constants()->version();
1569 Symbol *name = method->name();
1570 print_stack_element_internal(st, mirror, method_id, version, bci, name);
1571 }
1572
1573
1574 // Currently used only for exceptions occurring during startup
1575 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) {
1576 Thread *THREAD = Thread::current();
1577 Handle h_throwable(THREAD, throwable);
1578 while (h_throwable.not_null()) {
1579 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable())));
1580 if (result.is_null()) {
1581 st->print_raw_cr("\t<<no stack trace available>>");
1582 return;
1583 }
1584
1585 while (result.not_null()) {
1586
1587 // Get method id, bci, version and mirror from chunk
1588 typeArrayHandle methods (THREAD, BacktraceBuilder::get_methods(result));
1589 typeArrayHandle bcis (THREAD, BacktraceBuilder::get_bcis(result));
1590 objArrayHandle mirrors (THREAD, BacktraceBuilder::get_mirrors(result));
1591 typeArrayHandle names (THREAD, BacktraceBuilder::get_names(result));
1592
1593 int length = methods()->length();
1594 for (int index = 0; index < length; index++) {
1595 Handle mirror(THREAD, mirrors->obj_at(index));
1596 // NULL mirror means end of stack trace
1597 if (mirror.is_null()) goto handle_cause;
1598 int method = methods->short_at(index);
1599 int version = version_at(bcis->int_at(index));
1600 int bci = bci_at(bcis->int_at(index));
1601 Symbol* name = names->symbol_at(index);
1602 print_stack_element_internal(st, mirror, method, version, bci, name);
1603 }
1604 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset)));
1605 }
1606 handle_cause:
1607 {
1608 EXCEPTION_MARK;
1609 JavaValue cause(T_OBJECT);
1610 JavaCalls::call_virtual(&cause,
1611 h_throwable,
1612 KlassHandle(THREAD, h_throwable->klass()),
1613 vmSymbols::getCause_name(),
1614 vmSymbols::void_throwable_signature(),
1615 THREAD);
1616 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM.
1617 if (HAS_PENDING_EXCEPTION) {
1618 CLEAR_PENDING_EXCEPTION;
1619 h_throwable = Handle();
1620 } else {
1621 h_throwable = Handle(THREAD, (oop) cause.get_jobject());
1622 if (h_throwable.not_null()) {
1858
1859
1860 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) {
1861 if (throwable == NULL) {
1862 THROW_0(vmSymbols::java_lang_NullPointerException());
1863 }
1864 if (index < 0) {
1865 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1866 }
1867 // Compute how many chunks to skip and index into actual chunk
1868 objArrayOop chunk = objArrayOop(backtrace(throwable));
1869 int skip_chunks = index / trace_chunk_size;
1870 int chunk_index = index % trace_chunk_size;
1871 while (chunk != NULL && skip_chunks > 0) {
1872 chunk = objArrayOop(chunk->obj_at(trace_next_offset));
1873 skip_chunks--;
1874 }
1875 if (chunk == NULL) {
1876 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1877 }
1878 // Get method id, bci, version, mirror and name from chunk
1879 typeArrayOop methods = BacktraceBuilder::get_methods(chunk);
1880 typeArrayOop bcis = BacktraceBuilder::get_bcis(chunk);
1881 objArrayOop mirrors = BacktraceBuilder::get_mirrors(chunk);
1882 typeArrayOop names = BacktraceBuilder::get_names(chunk);
1883
1884 assert(methods != NULL && bcis != NULL && mirrors != NULL, "sanity check");
1885
1886 int method = methods->short_at(chunk_index);
1887 int version = version_at(bcis->int_at(chunk_index));
1888 int bci = bci_at(bcis->int_at(chunk_index));
1889 Symbol* name = names->symbol_at(chunk_index);
1890 Handle mirror(THREAD, mirrors->obj_at(chunk_index));
1891
1892 // Chunk can be partial full
1893 if (mirror.is_null()) {
1894 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL);
1895 }
1896 oop element = java_lang_StackTraceElement::create(mirror, method, version, bci, name, CHECK_0);
1897 return element;
1898 }
1899
1900 oop java_lang_StackTraceElement::create(Handle mirror, int method_id,
1901 int version, int bci, Symbol* name, TRAPS) {
1902 // Allocate java.lang.StackTraceElement instance
1903 Klass* k = SystemDictionary::StackTraceElement_klass();
1904 assert(k != NULL, "must be loaded in 1.4+");
1905 instanceKlassHandle ik (THREAD, k);
1906 if (ik->should_be_initialized()) {
1907 ik->initialize(CHECK_0);
1908 }
1909
1910 Handle element = ik->allocate_instance_handle(CHECK_0);
1911 // Fill in class name
1912 ResourceMark rm(THREAD);
1913 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror()));
1914 const char* str = holder->external_name();
1915 oop classname = StringTable::intern((char*) str, CHECK_0);
1916 java_lang_StackTraceElement::set_declaringClass(element(), classname);
1917
1918
1919 // Fill in method name
1920 oop methodname = StringTable::intern(name, CHECK_0);
1921 java_lang_StackTraceElement::set_methodName(element(), methodname);
1922
1923 // The method can be NULL if the requested class version is gone
1924 Method* method = holder->method_with_orig_idnum(method_id, version);
1925 if (!version_matches(method, version)) {
1926 // The method was redefined, accurate line number information isn't available
1927 java_lang_StackTraceElement::set_fileName(element(), NULL);
1928 java_lang_StackTraceElement::set_lineNumber(element(), -1);
1929 } else {
1930 // Fill in source file name and line number.
1931 Symbol* source = get_source_file_name(holder, version);
1932 if (ShowHiddenFrames && source == NULL)
1933 source = vmSymbols::unknown_class_name();
1934 oop filename = StringTable::intern(source, CHECK_0);
1935 java_lang_StackTraceElement::set_fileName(element(), filename);
1936
1937 int line_number = get_line_number(method, bci);
1938 java_lang_StackTraceElement::set_lineNumber(element(), line_number);
1939 }
1940 return element();
1941 }
1942
1943 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
1944 Handle mirror (THREAD, method->method_holder()->java_mirror());
1945 int method_id = method->orig_method_idnum();
1946 Symbol* name = method->name();
1947 return create(mirror, method_id, method->constants()->version(), bci, name, THREAD);
1948 }
1949
1950 void java_lang_reflect_AccessibleObject::compute_offsets() {
1951 Klass* k = SystemDictionary::reflect_AccessibleObject_klass();
1952 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature());
1953 }
1954
1955 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) {
1956 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1957 return (jboolean) reflect->bool_field(override_offset);
1958 }
1959
1960 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) {
1961 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
1962 reflect->bool_field_put(override_offset, (int) value);
1963 }
1964
1965 void java_lang_reflect_Method::compute_offsets() {
1966 Klass* k = SystemDictionary::reflect_Method_klass();
1967 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature());
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