35 #include "classfile/moduleEntry.hpp"
36 #include "classfile/stringTable.hpp"
37 #include "classfile/symbolTable.hpp"
38 #include "classfile/systemDictionary.hpp"
39 #include "classfile/vmClasses.hpp"
40 #include "classfile/vmSymbols.hpp"
41 #include "code/debugInfo.hpp"
42 #include "code/dependencyContext.hpp"
43 #include "code/pcDesc.hpp"
44 #include "gc/shared/collectedHeap.inline.hpp"
45 #include "interpreter/interpreter.hpp"
46 #include "interpreter/linkResolver.hpp"
47 #include "jvm.h"
48 #include "logging/log.hpp"
49 #include "logging/logStream.hpp"
50 #include "memory/oopFactory.hpp"
51 #include "memory/resourceArea.hpp"
52 #include "memory/universe.hpp"
53 #include "oops/fieldInfo.hpp"
54 #include "oops/fieldStreams.inline.hpp"
55 #include "oops/instanceKlass.inline.hpp"
56 #include "oops/instanceMirrorKlass.hpp"
57 #include "oops/klass.inline.hpp"
58 #include "oops/method.inline.hpp"
59 #include "oops/objArrayKlass.hpp"
60 #include "oops/objArrayOop.inline.hpp"
61 #include "oops/oop.inline.hpp"
62 #include "oops/oopCast.inline.hpp"
63 #include "oops/recordComponent.hpp"
64 #include "oops/symbol.hpp"
65 #include "oops/typeArrayOop.inline.hpp"
66 #include "prims/jvmtiExport.hpp"
67 #include "prims/methodHandles.hpp"
68 #include "prims/resolvedMethodTable.hpp"
69 #include "runtime/continuationEntry.inline.hpp"
70 #include "runtime/continuationJavaClasses.inline.hpp"
71 #include "runtime/fieldDescriptor.inline.hpp"
72 #include "runtime/frame.inline.hpp"
73 #include "runtime/handles.inline.hpp"
74 #include "runtime/handshake.hpp"
75 #include "runtime/init.hpp"
76 #include "runtime/interfaceSupport.inline.hpp"
77 #include "runtime/java.hpp"
78 #include "runtime/javaCalls.hpp"
79 #include "runtime/javaThread.hpp"
80 #include "runtime/jniHandles.inline.hpp"
81 #include "runtime/reflection.hpp"
82 #include "runtime/safepoint.hpp"
83 #include "runtime/safepointVerifiers.hpp"
851
852 // java_lang_Class
853
854 int java_lang_Class::_klass_offset;
855 int java_lang_Class::_array_klass_offset;
856 int java_lang_Class::_oop_size_offset;
857 int java_lang_Class::_static_oop_field_count_offset;
858 int java_lang_Class::_class_loader_offset;
859 int java_lang_Class::_module_offset;
860 int java_lang_Class::_protection_domain_offset;
861 int java_lang_Class::_component_mirror_offset;
862 int java_lang_Class::_init_lock_offset;
863 int java_lang_Class::_signers_offset;
864 int java_lang_Class::_name_offset;
865 int java_lang_Class::_source_file_offset;
866 int java_lang_Class::_classData_offset;
867 int java_lang_Class::_classRedefinedCount_offset;
868 int java_lang_Class::_reflectionData_offset;
869 int java_lang_Class::_modifiers_offset;
870 int java_lang_Class::_is_primitive_offset;
871 int java_lang_Class::_raw_access_flags_offset;
872
873 bool java_lang_Class::_offsets_computed = false;
874 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = nullptr;
875 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = nullptr;
876
877 #ifdef ASSERT
878 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
879 assert(fd->has_initial_value(), "caller should have checked this");
880 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
881 assert(fd->signature() == vmSymbols::string_signature(), "just checking");
882 }
883 #endif
884
885 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
886 DEBUG_ONLY(assert_valid_static_string_field(fd);)
887 oop string = fd->string_initial_value(CHECK);
888 mirror()->obj_field_put(fd->offset(), string);
889 }
890
1074 // With AOT-linked classes, java.base module is defined before any class
1075 // is loaded, so there's no need for fixup_module_field_list().
1076 GrowableArray<Klass*>* module_list =
1077 new (mtModule) GrowableArray<Klass*>(500, mtModule);
1078 set_fixup_module_field_list(module_list);
1079 }
1080 }
1081
1082 void java_lang_Class::allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
1083 Handle& mirror, Handle& comp_mirror, TRAPS) {
1084 // Allocate mirror (java.lang.Class instance)
1085 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
1086 mirror = Handle(THREAD, mirror_oop);
1087
1088 // Setup indirection from mirror->klass
1089 set_klass(mirror(), k);
1090
1091 // Set the modifiers flag.
1092 u2 computed_modifiers = k->compute_modifier_flags();
1093 set_modifiers(mirror(), computed_modifiers);
1094
1095 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
1096 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1097
1098 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1099
1100 // It might also have a component mirror. This mirror must already exist.
1101 if (k->is_array_klass()) {
1102 // The Java code for array classes gets the access flags from the element type.
1103 set_raw_access_flags(mirror(), 0);
1104 if (k->is_typeArray_klass()) {
1105 BasicType type = TypeArrayKlass::cast(k)->element_type();
1106 if (is_scratch) {
1107 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
1108 } else {
1109 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1110 }
1111 } else {
1112 assert(k->is_objArray_klass(), "Must be");
1113 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1114 assert(element_klass != nullptr, "Must have an element klass");
1115 if (is_scratch) {
1116 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1117 } else {
1118 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1119 }
1120 }
1121 assert(comp_mirror() != nullptr, "must have a mirror");
1122
1123 // Two-way link between the array klass and its component mirror:
1124 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1125 set_component_mirror(mirror(), comp_mirror());
1126 // See below for ordering dependencies between field array_klass in component mirror
1127 // and java_mirror in this klass.
1128 } else {
1129 assert(k->is_instance_klass(), "Must be");
1130 // Set the raw access_flags, this is used by reflection instead of modifier flags.
1131 set_raw_access_flags(mirror(), InstanceKlass::cast(k)->access_flags().as_unsigned_short());
1132 initialize_mirror_fields(InstanceKlass::cast(k), mirror, protection_domain, classData, THREAD);
1133 if (HAS_PENDING_EXCEPTION) {
1134 // If any of the fields throws an exception like OOM remove the klass field
1135 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1136 // This mirror looks like a primitive type, which logically it is because it
1137 // it represents no class.
1138 set_klass(mirror(), nullptr);
1139 return;
1140 }
1141 }
1142 }
1143
1144 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1145 Handle module, Handle protection_domain,
1146 Handle classData, TRAPS) {
1147 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1148 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1149
1150 // Class_klass has to be loaded because it is used to allocate
1151 // the mirror.
1152 if (vmClasses::Class_klass_is_loaded()) {
1153 Handle mirror;
1154 Handle comp_mirror;
1155
1156 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1157
1158 // set the classLoader field in the java_lang_Class instance
1159 assert(class_loader() == k->class_loader(), "should be same");
1160 set_class_loader(mirror(), class_loader());
1161
1162 // Setup indirection from klass->mirror
1163 // after any exceptions can happen during allocations.
1164 k->set_java_mirror(mirror);
1165
1166 // Set the module field in the java_lang_Class instance. This must be done
1167 // after the mirror is set.
1168 set_mirror_module_field(THREAD, k, mirror, module);
1169
1170 if (comp_mirror() != nullptr) {
1171 // Set after k->java_mirror() is published, because compiled code running
1172 // concurrently doesn't expect a k to have a null java_mirror.
1173 release_set_array_klass(comp_mirror(), k);
1174 }
1175 if (CDSConfig::is_dumping_heap()) {
1176 create_scratch_mirror(k, CHECK);
1177 }
1178 } else {
1179 assert(!CDSConfig::is_using_aot_linked_classes(), "should not come here");
1180 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1181 fixup_mirror_list()->push(k);
1182 }
1183 }
1184
1185 #if INCLUDE_CDS_JAVA_HEAP
1186 // The "scratch mirror" stores the states of the mirror object that can be
1187 // decided at dump time (such as the initial values of the static fields, the
1188 // component mirror, etc). At runtime, more information is added to it by
1189 // java_lang_Class::restore_archived_mirror().
1190 //
1191 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1192 // produces the same result as /*runtime*/create_mirror().
1193 //
1194 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1195 // latter may contain dumptime-specific information that cannot be archived
1196 // (e.g., ClassLoaderData*, or static fields that are modified by Java code execution).
1197 void java_lang_Class::create_scratch_mirror(Klass* k, TRAPS) {
1198 if (k->class_loader() != nullptr &&
1199 k->class_loader() != SystemDictionary::java_platform_loader() &&
1200 k->class_loader() != SystemDictionary::java_system_loader()) {
1201 // We only archive the mirrors of classes loaded by the built-in loaders
1202 return;
1203 }
1204
1205 Handle protection_domain, classData; // set to null. Will be reinitialized at runtime
1206 Handle mirror;
1207 Handle comp_mirror;
1208 allocate_mirror(k, /*is_scratch=*/true, protection_domain, classData, mirror, comp_mirror, CHECK);
1209
1210 if (comp_mirror() != nullptr) {
1211 release_set_array_klass(comp_mirror(), k);
1212 }
1213
1214 HeapShared::set_scratch_java_mirror(k, mirror());
1215 }
1216
1217 // Returns true if the mirror is updated, false if no archived mirror
1218 // data is present. After the archived mirror object is restored, the
1219 // shared klass' _has_raw_archived_mirror flag is cleared.
1220 bool java_lang_Class::restore_archived_mirror(Klass *k,
1221 Handle class_loader, Handle module,
1222 Handle protection_domain, TRAPS) {
1223 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1224 // see more details in vmClasses::resolve_all().
1225 if (!vmClasses::Class_klass_is_loaded() && !CDSConfig::is_using_aot_linked_classes()) {
1226 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1227 fixup_mirror_list()->push(k);
1228 return true;
1229 }
1230
1231 oop m = k->archived_java_mirror();
1232 assert(m != nullptr, "must have stored non-null archived mirror");
1233
1234 // Sanity: clear it now to prevent re-initialization if any of the following fails
1235 k->clear_archived_mirror_index();
1236
1237 // mirror is archived, restore
1238 log_debug(aot, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1239 assert(as_Klass(m) == k, "must be");
1240 Handle mirror(THREAD, m);
1241
1242 if (!k->is_array_klass()) {
1243 // - local static final fields with initial values were initialized at dump time
1244 assert(init_lock(mirror()) != nullptr, "allocated during AOT assembly");
1245
1246 if (protection_domain.not_null()) {
1247 set_protection_domain(mirror(), protection_domain());
1248 }
1249 }
1250
1251 assert(class_loader() == k->class_loader(), "should be same");
1252 if (class_loader.not_null()) {
1253 set_class_loader(mirror(), class_loader());
1254 }
1255
1256 k->set_java_mirror(mirror);
1257
1258 set_mirror_module_field(THREAD, k, mirror, module);
1259
1260 if (log_is_enabled(Trace, aot, heap, mirror)) {
1261 ResourceMark rm(THREAD);
1262 log_trace(aot, heap, mirror)(
1263 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1264 }
1265
1266 if (CDSConfig::is_dumping_heap()) {
1267 create_scratch_mirror(k, CHECK_(false));
1268 }
1269
1270 return true;
1271 }
1272 #endif // INCLUDE_CDS_JAVA_HEAP
1273
1274 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1275 assert(_module_offset != 0, "must have been computed already");
1276 set_module(k->java_mirror(), module());
1277 }
1278
1279 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1280 assert(_oop_size_offset != 0, "must be set");
1281 assert(size > 0, "Oop size must be greater than zero, not %zu", size);
1282 assert(size <= INT_MAX, "Lossy conversion: %zu", size);
1283 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1284 }
1285
1286 int java_lang_Class::static_oop_field_count(oop java_class) {
1365 java_class->obj_field_put(_name_offset, o);
1366 }
1367 return o;
1368 }
1369
1370 oop java_lang_Class::source_file(oop java_class) {
1371 assert(_source_file_offset != 0, "must be set");
1372 return java_class->obj_field(_source_file_offset);
1373 }
1374
1375 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1376 assert(_source_file_offset != 0, "must be set");
1377 java_class->obj_field_put(_source_file_offset, source_file);
1378 }
1379
1380 void java_lang_Class::set_is_primitive(oop java_class) {
1381 assert(_is_primitive_offset != 0, "must be set");
1382 java_class->bool_field_put(_is_primitive_offset, true);
1383 }
1384
1385
1386 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1387 // Mirrors for basic types have a null klass field, which makes them special.
1388 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, CHECK_NULL);
1389 if (type != T_VOID) {
1390 Klass* aklass = Universe::typeArrayKlass(type);
1391 assert(aklass != nullptr, "correct bootstrap");
1392 release_set_array_klass(java_class, aklass);
1393 }
1394 #ifdef ASSERT
1395 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1396 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1397 #endif
1398 set_modifiers(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1399 set_raw_access_flags(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1400
1401 set_is_primitive(java_class);
1402 return java_class;
1403 }
1404
1406 assert(is_instance(java_class), "must be a Class object");
1407 java_class->metadata_field_put(_klass_offset, klass);
1408 }
1409
1410
1411 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1412 assert(is_instance(java_class), "must be a Class object");
1413 Symbol* name = nullptr;
1414 bool is_instance = false;
1415 if (is_primitive(java_class)) {
1416 name = vmSymbols::type_signature(primitive_type(java_class));
1417 } else {
1418 Klass* k = as_Klass(java_class);
1419 is_instance = k->is_instance_klass();
1420 name = k->name();
1421 }
1422 if (name == nullptr) {
1423 st->print("<null>");
1424 return;
1425 }
1426 if (is_instance) st->print("L");
1427 st->write((char*) name->base(), (int) name->utf8_length());
1428 if (is_instance) st->print(";");
1429 }
1430
1431 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1432 assert(is_instance(java_class), "must be a Class object");
1433 Symbol* name;
1434 if (is_primitive(java_class)) {
1435 name = vmSymbols::type_signature(primitive_type(java_class));
1436 // Because this can create a new symbol, the caller has to decrement
1437 // the refcount, so make adjustment here and below for symbols returned
1438 // that are not created or incremented due to a successful lookup.
1439 name->increment_refcount();
1440 } else {
1441 Klass* k = as_Klass(java_class);
1442 if (!k->is_instance_klass()) {
1443 name = k->name();
1444 name->increment_refcount();
1445 } else {
1446 ResourceMark rm;
1464 const char* name = nullptr;
1465 if (is_primitive(java_class)) {
1466 name = type2name(primitive_type(java_class));
1467 } else {
1468 name = as_Klass(java_class)->external_name();
1469 }
1470 if (name == nullptr) {
1471 name = "<null>";
1472 }
1473 return name;
1474 }
1475
1476 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1477 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1478 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1479 return k;
1480 }
1481
1482 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1483 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1484 java_class->release_metadata_field_put(_array_klass_offset, klass);
1485 }
1486
1487
1488 BasicType java_lang_Class::primitive_type(oop java_class) {
1489 assert(is_primitive(java_class), "just checking");
1490 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1491 BasicType type = T_VOID;
1492 if (ak != nullptr) {
1493 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1494 type = ArrayKlass::cast(ak)->element_type();
1495 } else {
1496 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1497 }
1498 #ifdef ASSERT
1499 if (CDSConfig::is_dumping_heap()) {
1500 oop mirror = Universe::java_mirror(type);
1501 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1502 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1503 } else {
1523
1524 oop java_lang_Class::primitive_mirror(BasicType t) {
1525 oop mirror = Universe::java_mirror(t);
1526 assert(mirror != nullptr && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1527 assert(is_primitive(mirror), "must be primitive");
1528 return mirror;
1529 }
1530
1531 #define CLASS_FIELDS_DO(macro) \
1532 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1533 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1534 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1535 macro(_module_offset, k, "module", module_signature, false); \
1536 macro(_name_offset, k, "name", string_signature, false); \
1537 macro(_classData_offset, k, "classData", object_signature, false); \
1538 macro(_reflectionData_offset, k, "reflectionData", java_lang_ref_SoftReference_signature, false); \
1539 macro(_signers_offset, k, "signers", object_array_signature, false); \
1540 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), char_signature, false); \
1541 macro(_raw_access_flags_offset, k, "classFileAccessFlags", char_signature, false); \
1542 macro(_protection_domain_offset, k, "protectionDomain", java_security_ProtectionDomain_signature, false); \
1543 macro(_is_primitive_offset, k, "primitive", bool_signature, false);
1544
1545 void java_lang_Class::compute_offsets() {
1546 if (_offsets_computed) {
1547 return;
1548 }
1549
1550 _offsets_computed = true;
1551
1552 InstanceKlass* k = vmClasses::Class_klass();
1553 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1554 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1555 }
1556
1557 #if INCLUDE_CDS
1558 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1559 f->do_bool(&_offsets_computed);
1560
1561 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1562
1563 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1973 ResourceMark rm(THREAD);
1974 HandleMark hm(THREAD);
1975 GetStackTraceHandshakeClosure gsthc(Handle(THREAD, thread_oop));
1976 if (is_virtual) {
1977 Handshake::execute(&gsthc, thread_oop);
1978 } else {
1979 Handshake::execute(&gsthc, &tlh, java_thread);
1980 }
1981
1982 // Stop if no stack trace is found.
1983 if (gsthc._depth == 0) {
1984 return nullptr;
1985 }
1986
1987 // Convert to StackTraceElement array
1988 InstanceKlass* k = vmClasses::StackTraceElement_klass();
1989 assert(k != nullptr, "must be loaded in 1.4+");
1990 if (k->should_be_initialized()) {
1991 k->initialize(CHECK_NULL);
1992 }
1993 objArrayHandle trace = oopFactory::new_objArray_handle(k, gsthc._depth, CHECK_NULL);
1994
1995 for (int i = 0; i < gsthc._depth; i++) {
1996 methodHandle method(THREAD, gsthc._methods.at(i));
1997 oop element = java_lang_StackTraceElement::create(method,
1998 gsthc._bcis.at(i),
1999 CHECK_NULL);
2000 trace->obj_at_put(i, element);
2001 }
2002
2003 return trace();
2004 }
2005
2006 const char* java_lang_Thread::thread_status_name(oop java_thread) {
2007 JavaThreadStatus status = get_thread_status(java_thread);
2008 switch (status) {
2009 case JavaThreadStatus::NEW : return "NEW";
2010 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
2011 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
2012 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
2013 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
2264 macro(_cause_offset, k, "cause", throwable_signature, false); \
2265 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2266
2267 void java_lang_Throwable::compute_offsets() {
2268 InstanceKlass* k = vmClasses::Throwable_klass();
2269 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2270 }
2271
2272 #if INCLUDE_CDS
2273 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2274 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2275 }
2276 #endif
2277
2278 oop java_lang_Throwable::unassigned_stacktrace() {
2279 InstanceKlass* ik = vmClasses::Throwable_klass();
2280 oop base = ik->static_field_base_raw();
2281 return base->obj_field(_static_unassigned_stacktrace_offset);
2282 }
2283
2284 oop java_lang_Throwable::backtrace(oop throwable) {
2285 return throwable->obj_field_acquire(_backtrace_offset);
2286 }
2287
2288
2289 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2290 throwable->release_obj_field_put(_backtrace_offset, value);
2291 }
2292
2293 int java_lang_Throwable::depth(oop throwable) {
2294 return throwable->int_field(_depth_offset);
2295 }
2296
2297 void java_lang_Throwable::set_depth(oop throwable, int value) {
2298 throwable->int_field_put(_depth_offset, value);
2299 }
2300
2301 oop java_lang_Throwable::message(oop throwable) {
2302 return throwable->obj_field(_detailMessage_offset);
2303 }
2304
2305 const char* java_lang_Throwable::message_as_utf8(oop throwable) {
2306 oop msg = java_lang_Throwable::message(throwable);
2307 const char* msg_utf8 = nullptr;
2308 if (msg != nullptr) {
2309 msg_utf8 = java_lang_String::as_utf8_string(msg);
2339 st->print(": %s", java_lang_String::as_utf8_string(msg));
2340 }
2341 }
2342
2343 // After this many redefines, the stack trace is unreliable.
2344 const int MAX_VERSION = USHRT_MAX;
2345
2346 static inline bool version_matches(Method* method, int version) {
2347 assert(version < MAX_VERSION, "version is too big");
2348 return method != nullptr && (method->constants()->version() == version);
2349 }
2350
2351 // This class provides a simple wrapper over the internal structure of
2352 // exception backtrace to insulate users of the backtrace from needing
2353 // to know what it looks like.
2354 // The code of this class is not GC safe. Allocations can only happen
2355 // in expand().
2356 class BacktraceBuilder: public StackObj {
2357 friend class BacktraceIterator;
2358 private:
2359 Handle _backtrace;
2360 objArrayOop _head;
2361 typeArrayOop _methods;
2362 typeArrayOop _bcis;
2363 objArrayOop _mirrors;
2364 typeArrayOop _names; // Needed to insulate method name against redefinition.
2365 // True if the top frame of the backtrace is omitted because it shall be hidden.
2366 bool _has_hidden_top_frame;
2367 int _index;
2368 NoSafepointVerifier _nsv;
2369
2370 enum {
2371 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2372 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2373 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2374 trace_names_offset = java_lang_Throwable::trace_names_offset,
2375 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2376 trace_next_offset = java_lang_Throwable::trace_next_offset,
2377 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2378 trace_size = java_lang_Throwable::trace_size,
2379 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2380 };
2381
2382 // get info out of chunks
2383 static typeArrayOop get_methods(objArrayHandle chunk) {
2384 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2385 assert(methods != nullptr, "method array should be initialized in backtrace");
2386 return methods;
2387 }
2388 static typeArrayOop get_bcis(objArrayHandle chunk) {
2389 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2390 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2391 return bcis;
2392 }
2393 static objArrayOop get_mirrors(objArrayHandle chunk) {
2394 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2395 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2396 return mirrors;
2397 }
2398 static typeArrayOop get_names(objArrayHandle chunk) {
2399 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2400 assert(names != nullptr, "names array should be initialized in backtrace");
2401 return names;
2402 }
2403 static bool has_hidden_top_frame(objArrayHandle chunk) {
2404 oop hidden = chunk->obj_at(trace_hidden_offset);
2405 return hidden != nullptr;
2406 }
2407
2408 public:
2409
2410 // constructor for new backtrace
2411 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2412 expand(CHECK);
2413 _backtrace = Handle(THREAD, _head);
2414 _index = 0;
2415 }
2416
2417 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2418 _methods = get_methods(backtrace);
2419 _bcis = get_bcis(backtrace);
2420 _mirrors = get_mirrors(backtrace);
2421 _names = get_names(backtrace);
2422 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2423 assert(_methods->length() == _bcis->length() &&
2424 _methods->length() == _mirrors->length() &&
2425 _mirrors->length() == _names->length(),
2426 "method and source information arrays should match");
2427
2428 // head is the preallocated backtrace
2429 _head = backtrace();
2430 _backtrace = Handle(thread, _head);
2431 _index = 0;
2432 }
2433
2434 void expand(TRAPS) {
2435 objArrayHandle old_head(THREAD, _head);
2436 PauseNoSafepointVerifier pnsv(&_nsv);
2437
2438 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2439 objArrayHandle new_head(THREAD, head);
2440
2441 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2442 typeArrayHandle new_methods(THREAD, methods);
2443
2444 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2445 typeArrayHandle new_bcis(THREAD, bcis);
2446
2447 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2448 objArrayHandle new_mirrors(THREAD, mirrors);
2449
2450 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2451 typeArrayHandle new_names(THREAD, names);
2452
2453 if (!old_head.is_null()) {
2454 old_head->obj_at_put(trace_next_offset, new_head());
2455 }
2456 new_head->obj_at_put(trace_methods_offset, new_methods());
2457 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2458 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2459 new_head->obj_at_put(trace_names_offset, new_names());
2460 new_head->obj_at_put(trace_hidden_offset, nullptr);
2461
2462 _head = new_head();
2463 _methods = new_methods();
2464 _bcis = new_bcis();
2465 _mirrors = new_mirrors();
2466 _names = new_names();
2467 _index = 0;
2468 }
2469
2470 oop backtrace() {
2471 return _backtrace();
2472 }
2473
2474 inline void push(Method* method, int bci, TRAPS) {
2475 // Smear the -1 bci to 0 since the array only holds unsigned
2476 // shorts. The later line number lookup would just smear the -1
2477 // to a 0 even if it could be recorded.
2478 if (bci == SynchronizationEntryBCI) bci = 0;
2479
2480 if (_index >= trace_chunk_size) {
2481 methodHandle mhandle(THREAD, method);
2482 expand(CHECK);
2483 method = mhandle();
2484 }
2485
2486 _methods->ushort_at_put(_index, method->orig_method_idnum());
2487 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2488
2489 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2490 // klass owning the symbols alive so their refcounts aren't decremented.
2508 // available right here. _methods is a short[].
2509 assert(_methods != nullptr, "we need a legal oop");
2510 _has_hidden_top_frame = true;
2511 _head->obj_at_put(trace_hidden_offset, _methods);
2512 }
2513 }
2514 };
2515
2516 struct BacktraceElement : public StackObj {
2517 int _method_id;
2518 int _bci;
2519 int _version;
2520 Symbol* _name;
2521 Handle _mirror;
2522 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2523 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2524 };
2525
2526 class BacktraceIterator : public StackObj {
2527 int _index;
2528 objArrayHandle _result;
2529 objArrayHandle _mirrors;
2530 typeArrayHandle _methods;
2531 typeArrayHandle _bcis;
2532 typeArrayHandle _names;
2533
2534 void init(objArrayHandle result, Thread* thread) {
2535 // Get method id, bci, version and mirror from chunk
2536 _result = result;
2537 if (_result.not_null()) {
2538 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2539 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2540 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2541 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2542 _index = 0;
2543 }
2544 }
2545 public:
2546 BacktraceIterator(objArrayHandle result, Thread* thread) {
2547 init(result, thread);
2548 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2549 }
2550
2551 BacktraceElement next(Thread* thread) {
2552 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2553 _methods->ushort_at(_index),
2554 Backtrace::version_at(_bcis->int_at(_index)),
2555 Backtrace::bci_at(_bcis->int_at(_index)),
2556 _names->symbol_at(_index));
2557 _index++;
2558
2559 if (_index >= java_lang_Throwable::trace_chunk_size) {
2560 int next_offset = java_lang_Throwable::trace_next_offset;
2561 // Get next chunk
2562 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2563 init(result, thread);
2564 }
2565 return e;
2566 }
2567
2568 bool repeat() {
2569 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2570 }
2571 };
2572
2573
2574 // Print stack trace element to the specified output stream.
2575 // The output is formatted into a stringStream and written to the outputStream in one step.
2576 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2577 int version, int bci, Symbol* name) {
2578 ResourceMark rm;
2579 stringStream ss;
2580
2581 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(mirror());
2582 const char* klass_name = holder->external_name();
2633
2634 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2635 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2636 int method_id = method->orig_method_idnum();
2637 int version = method->constants()->version();
2638 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2639 }
2640
2641 /**
2642 * Print the throwable message and its stack trace plus all causes by walking the
2643 * cause chain. The output looks the same as of Throwable.printStackTrace().
2644 */
2645 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2646 // First, print the message.
2647 print(throwable(), st);
2648 st->cr();
2649
2650 // Now print the stack trace.
2651 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2652 while (throwable.not_null()) {
2653 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2654 if (result.is_null()) {
2655 st->print_raw_cr("\t<<no stack trace available>>");
2656 return;
2657 }
2658 BacktraceIterator iter(result, THREAD);
2659
2660 while (iter.repeat()) {
2661 BacktraceElement bte = iter.next(THREAD);
2662 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2663 }
2664 if (THREAD->can_call_java()) {
2665 // Call getCause() which doesn't necessarily return the _cause field.
2666 ExceptionMark em(THREAD);
2667 JavaValue cause(T_OBJECT);
2668 JavaCalls::call_virtual(&cause,
2669 throwable,
2670 throwable->klass(),
2671 vmSymbols::getCause_name(),
2672 vmSymbols::void_throwable_signature(),
2673 THREAD);
2817
2818 // the format of the stacktrace will be:
2819 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2820 // - 0 or more <init> methods for the exception class (skipped)
2821 // - rest of the stack
2822
2823 if (!skip_fillInStackTrace_check) {
2824 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2825 throwable->is_a(method->method_holder())) {
2826 continue;
2827 }
2828 else {
2829 skip_fillInStackTrace_check = true; // gone past them all
2830 }
2831 }
2832 if (!skip_throwableInit_check) {
2833 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2834
2835 // skip <init> methods of the exception class and superclasses
2836 // This is similar to classic VM.
2837 if (method->name() == vmSymbols::object_initializer_name() &&
2838 throwable->is_a(method->method_holder())) {
2839 continue;
2840 } else {
2841 // there are none or we've seen them all - either way stop checking
2842 skip_throwableInit_check = true;
2843 }
2844 }
2845 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2846 if (skip_hidden) {
2847 if (total_count == 0) {
2848 // The top frame will be hidden from the stack trace.
2849 bt.set_has_hidden_top_frame();
2850 }
2851 continue;
2852 }
2853 }
2854
2855 bt.push(method, bci, CHECK);
2856 total_count++;
2857 }
2886 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2887 // Allocate stack trace - backtrace is created but not filled in
2888
2889 // No-op if stack trace is disabled
2890 if (!StackTraceInThrowable) return;
2891 BacktraceBuilder bt(CHECK); // creates a backtrace
2892 set_backtrace(throwable(), bt.backtrace());
2893 }
2894
2895
2896 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2897 // Fill in stack trace into preallocated backtrace (no GC)
2898
2899 // No-op if stack trace is disabled
2900 if (!StackTraceInThrowable) return;
2901
2902 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2903
2904 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2905
2906 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2907 assert(backtrace.not_null(), "backtrace should have been preallocated");
2908
2909 ResourceMark rm(THREAD);
2910 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2911
2912 BacktraceBuilder bt(THREAD, backtrace);
2913
2914 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2915 // methods as preallocated errors aren't created by "java" code.
2916
2917 // fill in as much stack trace as possible
2918 int chunk_count = 0;
2919 for (;!st.at_end(); st.next()) {
2920 bt.push(st.method(), st.bci(), CHECK);
2921 chunk_count++;
2922
2923 // Bail-out for deep stacks
2924 if (chunk_count >= trace_chunk_size) break;
2925 }
2926 set_depth(throwable(), chunk_count);
2927 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2928
2929 // We support the Throwable immutability protocol defined for Java 7.
2930 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2931 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2932 }
2933
2934 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2935 objArrayHandle stack_trace_array_h, TRAPS) {
2936
2937 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2938 THROW(vmSymbols::java_lang_NullPointerException());
2939 }
2940
2941 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2942
2943 if (stack_trace_array_h->length() != depth) {
2944 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2945 }
2946
2947 objArrayHandle result(THREAD, objArrayOop(backtrace()));
2948 BacktraceIterator iter(result, THREAD);
2949
2950 int index = 0;
2951 while (iter.repeat()) {
2952 BacktraceElement bte = iter.next(THREAD);
2953
2954 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2955
2956 if (stack_trace_element.is_null()) {
2957 THROW(vmSymbols::java_lang_NullPointerException());
2958 }
2959
2960 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
2961 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2962
2963 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2964 method,
2965 bte._version,
2966 bte._bci,
2967 bte._name,
3011 vmSymbols::getStackTrace_name(),
3012 vmSymbols::getStackTrace_signature(),
3013 current);
3014 if (!current->has_pending_exception()){
3015 Handle stack_trace(current, result.get_oop());
3016 assert(stack_trace->is_objArray(), "Should be an array");
3017 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
3018 // Clear backtrace because the stacktrace should be used instead.
3019 set_backtrace(init_error(), nullptr);
3020 } else {
3021 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
3022 init_error->klass()->external_name());
3023 current->clear_pending_exception();
3024 }
3025
3026 return init_error;
3027 }
3028
3029 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
3030 JavaThread* current = JavaThread::current();
3031 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
3032 BacktraceIterator iter(result, current);
3033 // No backtrace available.
3034 if (!iter.repeat()) return false;
3035
3036 // If the exception happened in a frame that has been hidden, i.e.,
3037 // omitted from the back trace, we can not compute the message.
3038 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
3039 if (hidden != nullptr) {
3040 return false;
3041 }
3042
3043 // Get first backtrace element.
3044 BacktraceElement bte = iter.next(current);
3045
3046 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
3047 assert(holder != nullptr, "first element should be non-null");
3048 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
3049
3050 // Original version is no longer available.
3051 if (m == nullptr || !version_matches(m, bte._version)) {
3052 return false;
3053 }
3054
3055 *method = m;
3056 *bci = bte._bci;
3057 return true;
3058 }
3176 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
3177 int java_lang_ClassFrameInfo::_flags_offset;
3178
3179 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
3180 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3181 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3182
3183 void java_lang_ClassFrameInfo::compute_offsets() {
3184 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3185 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3186 }
3187
3188 #if INCLUDE_CDS
3189 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3190 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3191 }
3192 #endif
3193
3194 static int get_flags(const methodHandle& m) {
3195 int flags = m->access_flags().as_method_flags();
3196 if (m->is_object_initializer()) {
3197 flags |= java_lang_invoke_MemberName::MN_IS_CONSTRUCTOR;
3198 } else {
3199 // Note: Static initializers can be here. Record them as plain methods.
3200 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3201 }
3202 if (m->caller_sensitive()) {
3203 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3204 }
3205 if (m->is_hidden()) {
3206 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3207 }
3208 assert((flags & 0xFF000000) == 0, "unexpected flags");
3209 return flags;
3210 }
3211
3212 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3213 return obj->obj_field(_classOrMemberName_offset);
3214 }
3215
3216 int java_lang_ClassFrameInfo::flags(oop obj) {
3217 return obj->int_field(_flags_offset);
3568 constructor->int_field_put(_modifiers_offset, value);
3569 }
3570
3571 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3572 constructor->obj_field_put(_signature_offset, value);
3573 }
3574
3575 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3576 constructor->obj_field_put(_annotations_offset, value);
3577 }
3578
3579 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3580 method->obj_field_put(_parameter_annotations_offset, value);
3581 }
3582
3583 int java_lang_reflect_Field::_clazz_offset;
3584 int java_lang_reflect_Field::_name_offset;
3585 int java_lang_reflect_Field::_type_offset;
3586 int java_lang_reflect_Field::_slot_offset;
3587 int java_lang_reflect_Field::_modifiers_offset;
3588 int java_lang_reflect_Field::_trusted_final_offset;
3589 int java_lang_reflect_Field::_signature_offset;
3590 int java_lang_reflect_Field::_annotations_offset;
3591
3592 #define FIELD_FIELDS_DO(macro) \
3593 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3594 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3595 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3596 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3597 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3598 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3599 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3600 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3601
3602 void java_lang_reflect_Field::compute_offsets() {
3603 InstanceKlass* k = vmClasses::reflect_Field_klass();
3604 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3605 }
3606
3607 #if INCLUDE_CDS
3608 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3609 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3610 }
3611 #endif
3612
3613 Handle java_lang_reflect_Field::create(TRAPS) {
3614 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3615 Symbol* name = vmSymbols::java_lang_reflect_Field();
3616 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3617 InstanceKlass* ik = InstanceKlass::cast(k);
3618 // Ensure it is initialized
3643 void java_lang_reflect_Field::set_type(oop field, oop value) {
3644 field->obj_field_put(_type_offset, value);
3645 }
3646
3647 int java_lang_reflect_Field::slot(oop reflect) {
3648 return reflect->int_field(_slot_offset);
3649 }
3650
3651 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3652 reflect->int_field_put(_slot_offset, value);
3653 }
3654
3655 int java_lang_reflect_Field::modifiers(oop field) {
3656 return field->int_field(_modifiers_offset);
3657 }
3658
3659 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3660 field->int_field_put(_modifiers_offset, value);
3661 }
3662
3663 void java_lang_reflect_Field::set_trusted_final(oop field) {
3664 field->bool_field_put(_trusted_final_offset, true);
3665 }
3666
3667 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3668 field->obj_field_put(_signature_offset, value);
3669 }
3670
3671 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3672 field->obj_field_put(_annotations_offset, value);
3673 }
3674
3675 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3676 // Allocate java.lang.reflect.RecordComponent instance
3677 HandleMark hm(THREAD);
3678 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3679 assert(ik != nullptr, "must be loaded");
3680 ik->initialize(CHECK_NULL);
3681
3682 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3683
3684 Handle decl_class(THREAD, holder->java_mirror());
3944 }
3945 #endif
3946
3947 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3948 assert(obj != nullptr, "sanity");
3949 if (offset != _referent_offset) {
3950 return false;
3951 }
3952
3953 Klass* k = obj->klass();
3954 if (!k->is_instance_klass()) {
3955 return false;
3956 }
3957
3958 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3959 bool is_reference = ik->reference_type() != REF_NONE;
3960 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3961 return is_reference;
3962 }
3963
3964 int java_lang_boxing_object::_value_offset;
3965 int java_lang_boxing_object::_long_value_offset;
3966
3967 #define BOXING_FIELDS_DO(macro) \
3968 macro(_value_offset, integerKlass, "value", int_signature, false); \
3969 macro(_long_value_offset, longKlass, "value", long_signature, false);
3970
3971 void java_lang_boxing_object::compute_offsets() {
3972 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3973 InstanceKlass* longKlass = vmClasses::Long_klass();
3974 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3975 }
3976
3977 #if INCLUDE_CDS
3978 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3979 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3980 }
3981 #endif
3982
3983 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3984 Klass* k = vmClasses::box_klass(type);
3985 if (k == nullptr) return nullptr;
3986 InstanceKlass* ik = InstanceKlass::cast(k);
3987 if (!ik->is_initialized()) {
3988 ik->initialize(CHECK_NULL);
3989 }
3990 return ik->allocate_instance(THREAD);
3991 }
3992
3993
3994 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3995 oop box = initialize_and_allocate(type, CHECK_NULL);
3996 if (box == nullptr) return nullptr;
3997 switch (type) {
3998 case T_BOOLEAN:
3999 box->bool_field_put(_value_offset, value->z);
4000 break;
4001 case T_CHAR:
4002 box->char_field_put(_value_offset, value->c);
4003 break;
4004 case T_FLOAT:
4005 box->float_field_put(_value_offset, value->f);
4006 break;
4007 case T_DOUBLE:
4008 box->double_field_put(_long_value_offset, value->d);
4009 break;
4010 case T_BYTE:
4011 box->byte_field_put(_value_offset, value->b);
4012 break;
4013 case T_SHORT:
4014 box->short_field_put(_value_offset, value->s);
4015 break;
4016 case T_INT:
4017 box->int_field_put(_value_offset, value->i);
4018 break;
4019 case T_LONG:
4020 box->long_field_put(_long_value_offset, value->j);
4021 break;
4022 default:
4023 return nullptr;
4024 }
4025 return box;
4026 }
4027
4028
4029 BasicType java_lang_boxing_object::basic_type(oop box) {
4030 if (box == nullptr) return T_ILLEGAL;
4031 BasicType type = vmClasses::box_klass_type(box->klass());
4032 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
4033 return T_ILLEGAL;
4034 return type;
4035 }
4036
4037
4038 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
4039 BasicType type = vmClasses::box_klass_type(box->klass());
4040 switch (type) {
4041 case T_BOOLEAN:
4042 value->z = box->bool_field(_value_offset);
4043 break;
4044 case T_CHAR:
4045 value->c = box->char_field(_value_offset);
4046 break;
4047 case T_FLOAT:
4048 value->f = box->float_field(_value_offset);
4049 break;
4050 case T_DOUBLE:
4051 value->d = box->double_field(_long_value_offset);
4052 break;
4053 case T_BYTE:
4054 value->b = box->byte_field(_value_offset);
4055 break;
4056 case T_SHORT:
4057 value->s = box->short_field(_value_offset);
4058 break;
4059 case T_INT:
4060 value->i = box->int_field(_value_offset);
4061 break;
4062 case T_LONG:
4063 value->j = box->long_field(_long_value_offset);
4064 break;
4065 default:
4066 return T_ILLEGAL;
4067 } // end switch
4068 return type;
4069 }
4070
4071
4072 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
4073 BasicType type = vmClasses::box_klass_type(box->klass());
4074 switch (type) {
4075 case T_BOOLEAN:
4076 box->bool_field_put(_value_offset, value->z);
4077 break;
4078 case T_CHAR:
4079 box->char_field_put(_value_offset, value->c);
4080 break;
4081 case T_FLOAT:
4082 box->float_field_put(_value_offset, value->f);
4083 break;
4084 case T_DOUBLE:
4085 box->double_field_put(_long_value_offset, value->d);
4086 break;
4087 case T_BYTE:
4088 box->byte_field_put(_value_offset, value->b);
4089 break;
4090 case T_SHORT:
4091 box->short_field_put(_value_offset, value->s);
4092 break;
4093 case T_INT:
4094 box->int_field_put(_value_offset, value->i);
4095 break;
4096 case T_LONG:
4097 box->long_field_put(_long_value_offset, value->j);
4098 break;
4099 default:
4100 return T_ILLEGAL;
4101 } // end switch
4102 return type;
4103 }
4104
4105
4106 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
4107 switch (type) {
4108 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
4109 case T_CHAR: st->print("%d", value->c); break;
4110 case T_BYTE: st->print("%d", value->b); break;
4111 case T_SHORT: st->print("%d", value->s); break;
4112 case T_INT: st->print("%d", value->i); break;
4113 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
4114 case T_FLOAT: st->print("%f", value->f); break;
4115 case T_DOUBLE: st->print("%lf", value->d); break;
4116 default: st->print("type %d?", type); break;
4117 }
4305 #define ABIDescriptor_FIELDS_DO(macro) \
4306 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4307 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4308 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4309 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4310 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4311 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4312 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4313
4314 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4315 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4316 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4317 }
4318
4319 #if INCLUDE_CDS
4320 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4321 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4322 }
4323 #endif
4324
4325 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4326 return oop_cast<objArrayOop>(entry->obj_field(_inputStorage_offset));
4327 }
4328
4329 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4330 return oop_cast<objArrayOop>(entry->obj_field(_outputStorage_offset));
4331 }
4332
4333 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4334 return oop_cast<objArrayOop>(entry->obj_field(_volatileStorage_offset));
4335 }
4336
4337 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4338 return entry->int_field(_stackAlignment_offset);
4339 }
4340
4341 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4342 return entry->int_field(_shadowSpace_offset);
4343 }
4344
4345 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4346 return entry->obj_field(_scratch1_offset);
4347 }
4348
4349 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4350 return entry->obj_field(_scratch2_offset);
4351 }
4352
4353 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4354 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4397
4398 #define CallConv_FIELDS_DO(macro) \
4399 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4400 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4401
4402 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4403 return obj != nullptr && is_subclass(obj->klass());
4404 }
4405
4406 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4407 InstanceKlass* k = vmClasses::CallConv_klass();
4408 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4409 }
4410
4411 #if INCLUDE_CDS
4412 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4413 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4414 }
4415 #endif
4416
4417 objArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4418 return oop_cast<objArrayOop>(entry->obj_field(_argRegs_offset));
4419 }
4420
4421 objArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4422 return oop_cast<objArrayOop>(entry->obj_field(_retRegs_offset));
4423 }
4424
4425 oop java_lang_invoke_MethodHandle::type(oop mh) {
4426 return mh->obj_field(_type_offset);
4427 }
4428
4429 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4430 mh->obj_field_put(_type_offset, mtype);
4431 }
4432
4433 oop java_lang_invoke_MethodHandle::form(oop mh) {
4434 assert(_form_offset != 0, "");
4435 return mh->obj_field(_form_offset);
4436 }
4437
4438 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4439 assert(_form_offset != 0, "");
4440 mh->obj_field_put(_form_offset, lform);
4441 }
4442
4465 oop java_lang_invoke_MemberName::type(oop mname) {
4466 assert(is_instance(mname), "wrong type");
4467 return mname->obj_field(_type_offset);
4468 }
4469
4470 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4471 assert(is_instance(mname), "wrong type");
4472 mname->obj_field_put(_type_offset, type);
4473 }
4474
4475 int java_lang_invoke_MemberName::flags(oop mname) {
4476 assert(is_instance(mname), "wrong type");
4477 return mname->int_field(_flags_offset);
4478 }
4479
4480 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4481 assert(is_instance(mname), "wrong type");
4482 mname->int_field_put(_flags_offset, flags);
4483 }
4484
4485
4486 // Return vmtarget from ResolvedMethodName method field through indirection
4487 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4488 assert(is_instance(mname), "wrong type");
4489 oop method = mname->obj_field(_method_offset);
4490 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4491 }
4492
4493 bool java_lang_invoke_MemberName::is_method(oop mname) {
4494 assert(is_instance(mname), "must be MemberName");
4495 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
4496 }
4497
4498 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4499 assert(is_instance(mname), "wrong type");
4500 mname->obj_field_put(_method_offset, resolved_method);
4501 }
4502
4503 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4504 assert(is_instance(mname), "wrong type");
4505 return (intptr_t) mname->address_field(_vmindex_offset);
4506 }
4507
4508 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4509 assert(is_instance(mname), "wrong type");
4510 mname->address_field_put(_vmindex_offset, (address) index);
4511 }
4512
4513
4514 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4515 assert(is_instance(resolved_method), "wrong type");
4579 int java_lang_invoke_MethodType::_rtype_offset;
4580 int java_lang_invoke_MethodType::_ptypes_offset;
4581
4582 #define METHODTYPE_FIELDS_DO(macro) \
4583 macro(_rtype_offset, k, "rtype", class_signature, false); \
4584 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4585
4586 void java_lang_invoke_MethodType::compute_offsets() {
4587 InstanceKlass* k = vmClasses::MethodType_klass();
4588 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4589 }
4590
4591 #if INCLUDE_CDS
4592 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4593 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4594 }
4595 #endif
4596
4597 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4598 st->print("(");
4599 objArrayOop pts = ptypes(mt);
4600 if (pts != nullptr) {
4601 for (int i = 0, limit = pts->length(); i < limit; i++) {
4602 java_lang_Class::print_signature(pts->obj_at(i), st);
4603 }
4604 } else {
4605 st->print("null");
4606 }
4607 st->print(")");
4608 oop rt = rtype(mt);
4609 if (rt != nullptr) {
4610 java_lang_Class::print_signature(rt, st);
4611 } else {
4612 st->print("null");
4613 }
4614 }
4615
4616 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4617 ResourceMark rm;
4618 stringStream buffer(128);
4619 print_signature(mt, &buffer);
4630
4631 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4632 if (mt1 == mt2)
4633 return true;
4634 if (rtype(mt1) != rtype(mt2))
4635 return false;
4636 if (ptype_count(mt1) != ptype_count(mt2))
4637 return false;
4638 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4639 if (ptype(mt1, i) != ptype(mt2, i))
4640 return false;
4641 }
4642 return true;
4643 }
4644
4645 oop java_lang_invoke_MethodType::rtype(oop mt) {
4646 assert(is_instance(mt), "must be a MethodType");
4647 return mt->obj_field(_rtype_offset);
4648 }
4649
4650 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4651 assert(is_instance(mt), "must be a MethodType");
4652 return (objArrayOop) mt->obj_field(_ptypes_offset);
4653 }
4654
4655 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4656 return ptypes(mt)->obj_at(idx);
4657 }
4658
4659 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4660 return ptypes(mt)->length();
4661 }
4662
4663 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4664 objArrayOop pts = ptypes(mt);
4665 int count = pts->length();
4666 int slots = 0;
4667 for (int i = 0; i < count; i++) {
4668 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4669 slots += type2size[bt];
4670 }
4671 return slots;
4672 }
4673
4674 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4675 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4676 return type2size[bt];
4677 }
4678
4679
4680 // Support for java_lang_invoke_CallSite
4681
4682 int java_lang_invoke_CallSite::_target_offset;
4683 int java_lang_invoke_CallSite::_vmdependencies_offset;
4684 int java_lang_invoke_CallSite::_last_cleanup_offset;
5069 }
5070
5071 bool vector_VectorPayload::is_instance(oop obj) {
5072 return obj != nullptr && is_subclass(obj->klass());
5073 }
5074
5075 int java_lang_Integer_IntegerCache::_static_cache_offset;
5076 int java_lang_Long_LongCache::_static_cache_offset;
5077 int java_lang_Character_CharacterCache::_static_cache_offset;
5078 int java_lang_Short_ShortCache::_static_cache_offset;
5079 int java_lang_Byte_ByteCache::_static_cache_offset;
5080
5081 #define INTEGER_CACHE_FIELDS_DO(macro) \
5082 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5083
5084 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5085 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5086 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5087 }
5088
5089 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5090 oop base = ik->static_field_base_raw();
5091 return objArrayOop(base->obj_field(_static_cache_offset));
5092 }
5093
5094 Symbol* java_lang_Integer_IntegerCache::symbol() {
5095 return vmSymbols::java_lang_Integer_IntegerCache();
5096 }
5097
5098 #if INCLUDE_CDS
5099 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5100 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5101 }
5102 #endif
5103 #undef INTEGER_CACHE_FIELDS_DO
5104
5105 jint java_lang_Integer::value(oop obj) {
5106 jvalue v;
5107 java_lang_boxing_object::get_value(obj, &v);
5108 return v.i;
5109 }
5110
5111 #define LONG_CACHE_FIELDS_DO(macro) \
5112 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5113
5114 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5115 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5116 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5117 }
5118
5119 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5120 oop base = ik->static_field_base_raw();
5121 return objArrayOop(base->obj_field(_static_cache_offset));
5122 }
5123
5124 Symbol* java_lang_Long_LongCache::symbol() {
5125 return vmSymbols::java_lang_Long_LongCache();
5126 }
5127
5128 #if INCLUDE_CDS
5129 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5130 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5131 }
5132 #endif
5133 #undef LONG_CACHE_FIELDS_DO
5134
5135 jlong java_lang_Long::value(oop obj) {
5136 jvalue v;
5137 java_lang_boxing_object::get_value(obj, &v);
5138 return v.j;
5139 }
5140
5141 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5142 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5143
5144 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5145 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5146 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5147 }
5148
5149 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5150 oop base = ik->static_field_base_raw();
5151 return objArrayOop(base->obj_field(_static_cache_offset));
5152 }
5153
5154 Symbol* java_lang_Character_CharacterCache::symbol() {
5155 return vmSymbols::java_lang_Character_CharacterCache();
5156 }
5157
5158 #if INCLUDE_CDS
5159 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5160 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5161 }
5162 #endif
5163 #undef CHARACTER_CACHE_FIELDS_DO
5164
5165 jchar java_lang_Character::value(oop obj) {
5166 jvalue v;
5167 java_lang_boxing_object::get_value(obj, &v);
5168 return v.c;
5169 }
5170
5171 #define SHORT_CACHE_FIELDS_DO(macro) \
5172 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5173
5174 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5175 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5176 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5177 }
5178
5179 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5180 oop base = ik->static_field_base_raw();
5181 return objArrayOop(base->obj_field(_static_cache_offset));
5182 }
5183
5184 Symbol* java_lang_Short_ShortCache::symbol() {
5185 return vmSymbols::java_lang_Short_ShortCache();
5186 }
5187
5188 #if INCLUDE_CDS
5189 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5190 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5191 }
5192 #endif
5193 #undef SHORT_CACHE_FIELDS_DO
5194
5195 jshort java_lang_Short::value(oop obj) {
5196 jvalue v;
5197 java_lang_boxing_object::get_value(obj, &v);
5198 return v.s;
5199 }
5200
5201 #define BYTE_CACHE_FIELDS_DO(macro) \
5202 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5203
5204 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5205 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5206 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5207 }
5208
5209 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5210 oop base = ik->static_field_base_raw();
5211 return objArrayOop(base->obj_field(_static_cache_offset));
5212 }
5213
5214 Symbol* java_lang_Byte_ByteCache::symbol() {
5215 return vmSymbols::java_lang_Byte_ByteCache();
5216 }
5217
5218 #if INCLUDE_CDS
5219 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5220 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5221 }
5222 #endif
5223 #undef BYTE_CACHE_FIELDS_DO
5224
5225 jbyte java_lang_Byte::value(oop obj) {
5226 jvalue v;
5227 java_lang_boxing_object::get_value(obj, &v);
5228 return v.b;
5229 }
5230
5231 int java_lang_Boolean::_static_TRUE_offset;
5468 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5469 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5470 return false;
5471 }
5472 if (fd.is_static()) {
5473 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5474 return false;
5475 }
5476 if (fd.offset() == deserialized_offset ) {
5477 return true;
5478 } else {
5479 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5480 klass_name, field_name, deserialized_offset, fd.offset());
5481 return false;
5482 }
5483 }
5484
5485 void JavaClasses::check_offsets() {
5486 bool valid = true;
5487
5488 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5489 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5490
5491 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5492 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5493
5494 // Boxed primitive objects (java_lang_boxing_object)
5495
5496 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5497 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5498 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5499 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5500 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5501 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5502 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5503 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5504
5505 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5506 }
5507
5508 #endif // PRODUCT
5509
5510 int InjectedField::compute_offset() {
5511 InstanceKlass* ik = klass();
5512 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5513 if (!may_be_java && !fs.field_flags().is_injected()) {
5514 // Only look at injected fields
5515 continue;
5516 }
5517 if (fs.name() == name() && fs.signature() == signature()) {
5518 return fs.offset();
5519 }
5520 }
5521 ResourceMark rm;
5522 tty->print_cr("Invalid layout of %s at %s/%s%s", ik->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : "");
5523 #ifndef PRODUCT
|
35 #include "classfile/moduleEntry.hpp"
36 #include "classfile/stringTable.hpp"
37 #include "classfile/symbolTable.hpp"
38 #include "classfile/systemDictionary.hpp"
39 #include "classfile/vmClasses.hpp"
40 #include "classfile/vmSymbols.hpp"
41 #include "code/debugInfo.hpp"
42 #include "code/dependencyContext.hpp"
43 #include "code/pcDesc.hpp"
44 #include "gc/shared/collectedHeap.inline.hpp"
45 #include "interpreter/interpreter.hpp"
46 #include "interpreter/linkResolver.hpp"
47 #include "jvm.h"
48 #include "logging/log.hpp"
49 #include "logging/logStream.hpp"
50 #include "memory/oopFactory.hpp"
51 #include "memory/resourceArea.hpp"
52 #include "memory/universe.hpp"
53 #include "oops/fieldInfo.hpp"
54 #include "oops/fieldStreams.inline.hpp"
55 #include "oops/flatArrayKlass.hpp"
56 #include "oops/inlineKlass.inline.hpp"
57 #include "oops/instanceKlass.inline.hpp"
58 #include "oops/instanceMirrorKlass.inline.hpp"
59 #include "oops/klass.inline.hpp"
60 #include "oops/method.inline.hpp"
61 #include "oops/objArrayKlass.hpp"
62 #include "oops/objArrayOop.inline.hpp"
63 #include "oops/oop.inline.hpp"
64 #include "oops/oopCast.inline.hpp"
65 #include "oops/recordComponent.hpp"
66 #include "oops/refArrayOop.inline.hpp"
67 #include "oops/symbol.hpp"
68 #include "oops/typeArrayOop.inline.hpp"
69 #include "prims/jvmtiExport.hpp"
70 #include "prims/methodHandles.hpp"
71 #include "prims/resolvedMethodTable.hpp"
72 #include "runtime/continuationEntry.inline.hpp"
73 #include "runtime/continuationJavaClasses.inline.hpp"
74 #include "runtime/fieldDescriptor.inline.hpp"
75 #include "runtime/frame.inline.hpp"
76 #include "runtime/handles.inline.hpp"
77 #include "runtime/handshake.hpp"
78 #include "runtime/init.hpp"
79 #include "runtime/interfaceSupport.inline.hpp"
80 #include "runtime/java.hpp"
81 #include "runtime/javaCalls.hpp"
82 #include "runtime/javaThread.hpp"
83 #include "runtime/jniHandles.inline.hpp"
84 #include "runtime/reflection.hpp"
85 #include "runtime/safepoint.hpp"
86 #include "runtime/safepointVerifiers.hpp"
854
855 // java_lang_Class
856
857 int java_lang_Class::_klass_offset;
858 int java_lang_Class::_array_klass_offset;
859 int java_lang_Class::_oop_size_offset;
860 int java_lang_Class::_static_oop_field_count_offset;
861 int java_lang_Class::_class_loader_offset;
862 int java_lang_Class::_module_offset;
863 int java_lang_Class::_protection_domain_offset;
864 int java_lang_Class::_component_mirror_offset;
865 int java_lang_Class::_init_lock_offset;
866 int java_lang_Class::_signers_offset;
867 int java_lang_Class::_name_offset;
868 int java_lang_Class::_source_file_offset;
869 int java_lang_Class::_classData_offset;
870 int java_lang_Class::_classRedefinedCount_offset;
871 int java_lang_Class::_reflectionData_offset;
872 int java_lang_Class::_modifiers_offset;
873 int java_lang_Class::_is_primitive_offset;
874 int java_lang_Class::_is_identity_offset;
875 int java_lang_Class::_raw_access_flags_offset;
876
877 bool java_lang_Class::_offsets_computed = false;
878 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = nullptr;
879 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = nullptr;
880
881 #ifdef ASSERT
882 inline static void assert_valid_static_string_field(fieldDescriptor* fd) {
883 assert(fd->has_initial_value(), "caller should have checked this");
884 assert(fd->field_type() == T_OBJECT, "caller should have checked this");
885 assert(fd->signature() == vmSymbols::string_signature(), "just checking");
886 }
887 #endif
888
889 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) {
890 DEBUG_ONLY(assert_valid_static_string_field(fd);)
891 oop string = fd->string_initial_value(CHECK);
892 mirror()->obj_field_put(fd->offset(), string);
893 }
894
1078 // With AOT-linked classes, java.base module is defined before any class
1079 // is loaded, so there's no need for fixup_module_field_list().
1080 GrowableArray<Klass*>* module_list =
1081 new (mtModule) GrowableArray<Klass*>(500, mtModule);
1082 set_fixup_module_field_list(module_list);
1083 }
1084 }
1085
1086 void java_lang_Class::allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
1087 Handle& mirror, Handle& comp_mirror, TRAPS) {
1088 // Allocate mirror (java.lang.Class instance)
1089 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
1090 mirror = Handle(THREAD, mirror_oop);
1091
1092 // Setup indirection from mirror->klass
1093 set_klass(mirror(), k);
1094
1095 // Set the modifiers flag.
1096 u2 computed_modifiers = k->compute_modifier_flags();
1097 set_modifiers(mirror(), computed_modifiers);
1098 set_is_identity(mirror(), k->is_array_klass() || k->is_identity_class());
1099
1100 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
1101 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1102
1103 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1104
1105 // It might also have a component mirror. This mirror must already exist.
1106 if (k->is_array_klass()) {
1107 assert(!k->is_refined_objArray_klass(), "Should not be called with the refined array klasses");
1108
1109 // The Java code for array classes gets the access flags from the element type.
1110 set_raw_access_flags(mirror(), 0);
1111 if (k->is_typeArray_klass()) {
1112 BasicType type = TypeArrayKlass::cast(k)->element_type();
1113 if (is_scratch) {
1114 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
1115 } else {
1116 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1117 }
1118 } else {
1119 assert(k->is_unrefined_objArray_klass(), "Must be");
1120 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1121 assert(element_klass != nullptr, "Must have an element klass");
1122 if (is_scratch) {
1123 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1124 } else {
1125 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1126 }
1127 }
1128 assert(comp_mirror() != nullptr, "must have a mirror");
1129
1130 // Two-way link between the array klass and its component mirror:
1131 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1132 set_component_mirror(mirror(), comp_mirror());
1133 // See below for ordering dependencies between field array_klass in component mirror
1134 // and java_mirror in this klass.
1135 } else {
1136 assert(k->is_instance_klass(), "Must be");
1137 // Set the raw access_flags, this is used by reflection instead of modifier flags.
1138 set_raw_access_flags(mirror(), InstanceKlass::cast(k)->access_flags().as_unsigned_short());
1139 initialize_mirror_fields(InstanceKlass::cast(k), mirror, protection_domain, classData, THREAD);
1140 if (HAS_PENDING_EXCEPTION) {
1141 // If any of the fields throws an exception like OOM remove the klass field
1142 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1143 // This mirror looks like a primitive type, which logically it is because it
1144 // it represents no class.
1145 set_klass(mirror(), nullptr);
1146 return;
1147 }
1148 }
1149 }
1150
1151 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1152 Handle module, Handle protection_domain,
1153 Handle classData, TRAPS) {
1154 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1155 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1156 // Class_klass has to be loaded because it is used to allocate
1157 // the mirror.
1158 if (vmClasses::Class_klass_is_loaded()) {
1159
1160 if (k->is_refined_objArray_klass()) {
1161 Klass* super_klass = k->super();
1162 assert(super_klass != nullptr, "Must be");
1163 Handle mirror(THREAD, super_klass->java_mirror());
1164 k->set_java_mirror(mirror);
1165 return;
1166 }
1167
1168 Handle mirror;
1169 Handle comp_mirror;
1170
1171 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1172
1173 // set the classLoader field in the java_lang_Class instance
1174 assert(class_loader() == k->class_loader(), "should be same");
1175 set_class_loader(mirror(), class_loader());
1176
1177 // Setup indirection from klass->mirror
1178 // after any exceptions can happen during allocations.
1179 k->set_java_mirror(mirror);
1180
1181 // Set the module field in the java_lang_Class instance. This must be done
1182 // after the mirror is set.
1183 set_mirror_module_field(THREAD, k, mirror, module);
1184
1185 if (comp_mirror() != nullptr) {
1186 // Set after k->java_mirror() is published, because compiled code running
1187 // concurrently doesn't expect a k to have a null java_mirror.
1188 release_set_array_klass(comp_mirror(), k);
1189 }
1190
1191 if (CDSConfig::is_dumping_heap()) {
1192 create_scratch_mirror(k, CHECK);
1193 }
1194 } else {
1195 assert(!CDSConfig::is_using_aot_linked_classes(), "should not come here");
1196 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1197 fixup_mirror_list()->push(k);
1198 }
1199 }
1200
1201 #if INCLUDE_CDS_JAVA_HEAP
1202 // The "scratch mirror" stores the states of the mirror object that can be
1203 // decided at dump time (such as the initial values of the static fields, the
1204 // component mirror, etc). At runtime, more information is added to it by
1205 // java_lang_Class::restore_archived_mirror().
1206 //
1207 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1208 // produces the same result as /*runtime*/create_mirror().
1209 //
1210 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1211 // latter may contain dumptime-specific information that cannot be archived
1212 // (e.g., ClassLoaderData*, or static fields that are modified by Java code execution).
1213 void java_lang_Class::create_scratch_mirror(Klass* k, TRAPS) {
1214 if ((k->class_loader() != nullptr &&
1215 k->class_loader() != SystemDictionary::java_platform_loader() &&
1216 k->class_loader() != SystemDictionary::java_system_loader())) {
1217 // We only archive the mirrors of classes loaded by the built-in loaders
1218 return;
1219 }
1220
1221 Handle protection_domain, classData; // set to null. Will be reinitialized at runtime
1222 Handle mirror;
1223 Handle comp_mirror;
1224 allocate_mirror(k, /*is_scratch=*/true, protection_domain, classData, mirror, comp_mirror, CHECK);
1225
1226 if (comp_mirror() != nullptr) {
1227 release_set_array_klass(comp_mirror(), k);
1228 }
1229
1230 HeapShared::set_scratch_java_mirror(k, mirror());
1231 }
1232
1233 // Returns true if the mirror is updated, false if no archived mirror
1234 // data is present. After the archived mirror object is restored, the
1235 // shared klass' _has_raw_archived_mirror flag is cleared.
1236 bool java_lang_Class::restore_archived_mirror(Klass *k,
1237 Handle class_loader, Handle module,
1238 Handle protection_domain, TRAPS) {
1239 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1240 // see more details in vmClasses::resolve_all().
1241 if (!vmClasses::Class_klass_is_loaded() && !CDSConfig::is_using_aot_linked_classes()) {
1242 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1243 fixup_mirror_list()->push(k);
1244 return true;
1245 }
1246
1247 oop m = k->archived_java_mirror();
1248 assert(m != nullptr, "must have stored non-null archived mirror");
1249
1250 // Sanity: clear it now to prevent re-initialization if any of the following fails
1251 k->clear_archived_mirror_index();
1252
1253 // mirror is archived, restore
1254 log_debug(aot, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1255 Handle mirror(THREAD, m);
1256
1257 if (!k->is_array_klass()) {
1258 assert(as_Klass(m) == k, "must be");
1259 // - local static final fields with initial values were initialized at dump time
1260 assert(init_lock(mirror()) != nullptr, "allocated during AOT assembly");
1261
1262 if (protection_domain.not_null()) {
1263 set_protection_domain(mirror(), protection_domain());
1264 }
1265 } else if (k->is_objArray_klass()) {
1266 ObjArrayKlass* objarray_k = (ObjArrayKlass*)as_Klass(m);
1267 // Mirror should be restored for an ObjArrayKlass or one of its refined array klasses
1268 assert(objarray_k == k || objarray_k->find_refined_array_klass((ObjArrayKlass*)k), "must be");
1269 }
1270
1271 assert(class_loader() == k->class_loader(), "should be same");
1272 if (class_loader.not_null()) {
1273 set_class_loader(mirror(), class_loader());
1274 }
1275
1276 k->set_java_mirror(mirror);
1277
1278 set_mirror_module_field(THREAD, k, mirror, module);
1279
1280 if (log_is_enabled(Trace, aot, heap, mirror)) {
1281 ResourceMark rm(THREAD);
1282 log_trace(aot, heap, mirror)(
1283 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1284 }
1285
1286 if (CDSConfig::is_dumping_heap() && (!k->is_refined_objArray_klass())) {
1287 create_scratch_mirror(k, CHECK_(false));
1288 }
1289
1290 return true;
1291 }
1292 #endif // INCLUDE_CDS_JAVA_HEAP
1293
1294 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1295 assert(_module_offset != 0, "must have been computed already");
1296 set_module(k->java_mirror(), module());
1297 }
1298
1299 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1300 assert(_oop_size_offset != 0, "must be set");
1301 assert(size > 0, "Oop size must be greater than zero, not %zu", size);
1302 assert(size <= INT_MAX, "Lossy conversion: %zu", size);
1303 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1304 }
1305
1306 int java_lang_Class::static_oop_field_count(oop java_class) {
1385 java_class->obj_field_put(_name_offset, o);
1386 }
1387 return o;
1388 }
1389
1390 oop java_lang_Class::source_file(oop java_class) {
1391 assert(_source_file_offset != 0, "must be set");
1392 return java_class->obj_field(_source_file_offset);
1393 }
1394
1395 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1396 assert(_source_file_offset != 0, "must be set");
1397 java_class->obj_field_put(_source_file_offset, source_file);
1398 }
1399
1400 void java_lang_Class::set_is_primitive(oop java_class) {
1401 assert(_is_primitive_offset != 0, "must be set");
1402 java_class->bool_field_put(_is_primitive_offset, true);
1403 }
1404
1405 void java_lang_Class::set_is_identity(oop java_class, bool value) {
1406 assert(_is_identity_offset != 0, "must be set");
1407 java_class->bool_field_put(_is_identity_offset, value);
1408 }
1409
1410 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1411 // Mirrors for basic types have a null klass field, which makes them special.
1412 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, CHECK_NULL);
1413 if (type != T_VOID) {
1414 Klass* aklass = Universe::typeArrayKlass(type);
1415 assert(aklass != nullptr, "correct bootstrap");
1416 release_set_array_klass(java_class, aklass);
1417 }
1418 #ifdef ASSERT
1419 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1420 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1421 #endif
1422 set_modifiers(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1423 set_raw_access_flags(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1424
1425 set_is_primitive(java_class);
1426 return java_class;
1427 }
1428
1430 assert(is_instance(java_class), "must be a Class object");
1431 java_class->metadata_field_put(_klass_offset, klass);
1432 }
1433
1434
1435 void java_lang_Class::print_signature(oop java_class, outputStream* st) {
1436 assert(is_instance(java_class), "must be a Class object");
1437 Symbol* name = nullptr;
1438 bool is_instance = false;
1439 if (is_primitive(java_class)) {
1440 name = vmSymbols::type_signature(primitive_type(java_class));
1441 } else {
1442 Klass* k = as_Klass(java_class);
1443 is_instance = k->is_instance_klass();
1444 name = k->name();
1445 }
1446 if (name == nullptr) {
1447 st->print("<null>");
1448 return;
1449 }
1450 if (is_instance) {
1451 st->print("L");
1452 }
1453 st->write((char*) name->base(), (int) name->utf8_length());
1454 if (is_instance) st->print(";");
1455 }
1456
1457 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) {
1458 assert(is_instance(java_class), "must be a Class object");
1459 Symbol* name;
1460 if (is_primitive(java_class)) {
1461 name = vmSymbols::type_signature(primitive_type(java_class));
1462 // Because this can create a new symbol, the caller has to decrement
1463 // the refcount, so make adjustment here and below for symbols returned
1464 // that are not created or incremented due to a successful lookup.
1465 name->increment_refcount();
1466 } else {
1467 Klass* k = as_Klass(java_class);
1468 if (!k->is_instance_klass()) {
1469 name = k->name();
1470 name->increment_refcount();
1471 } else {
1472 ResourceMark rm;
1490 const char* name = nullptr;
1491 if (is_primitive(java_class)) {
1492 name = type2name(primitive_type(java_class));
1493 } else {
1494 name = as_Klass(java_class)->external_name();
1495 }
1496 if (name == nullptr) {
1497 name = "<null>";
1498 }
1499 return name;
1500 }
1501
1502 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1503 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1504 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1505 return k;
1506 }
1507
1508 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1509 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1510 assert(!klass->is_refined_objArray_klass(), "should not be ref or flat array klass");
1511 java_class->release_metadata_field_put(_array_klass_offset, klass);
1512 }
1513
1514
1515 BasicType java_lang_Class::primitive_type(oop java_class) {
1516 assert(is_primitive(java_class), "just checking");
1517 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1518 BasicType type = T_VOID;
1519 if (ak != nullptr) {
1520 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1521 type = ArrayKlass::cast(ak)->element_type();
1522 } else {
1523 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1524 }
1525 #ifdef ASSERT
1526 if (CDSConfig::is_dumping_heap()) {
1527 oop mirror = Universe::java_mirror(type);
1528 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1529 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1530 } else {
1550
1551 oop java_lang_Class::primitive_mirror(BasicType t) {
1552 oop mirror = Universe::java_mirror(t);
1553 assert(mirror != nullptr && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1554 assert(is_primitive(mirror), "must be primitive");
1555 return mirror;
1556 }
1557
1558 #define CLASS_FIELDS_DO(macro) \
1559 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1560 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1561 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1562 macro(_module_offset, k, "module", module_signature, false); \
1563 macro(_name_offset, k, "name", string_signature, false); \
1564 macro(_classData_offset, k, "classData", object_signature, false); \
1565 macro(_reflectionData_offset, k, "reflectionData", java_lang_ref_SoftReference_signature, false); \
1566 macro(_signers_offset, k, "signers", object_array_signature, false); \
1567 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), char_signature, false); \
1568 macro(_raw_access_flags_offset, k, "classFileAccessFlags", char_signature, false); \
1569 macro(_protection_domain_offset, k, "protectionDomain", java_security_ProtectionDomain_signature, false); \
1570 macro(_is_primitive_offset, k, "primitive", bool_signature, false); \
1571 macro(_is_identity_offset, k, "identity", bool_signature, false);
1572
1573 void java_lang_Class::compute_offsets() {
1574 if (_offsets_computed) {
1575 return;
1576 }
1577
1578 _offsets_computed = true;
1579
1580 InstanceKlass* k = vmClasses::Class_klass();
1581 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1582 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1583 }
1584
1585 #if INCLUDE_CDS
1586 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1587 f->do_bool(&_offsets_computed);
1588
1589 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1590
1591 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
2001 ResourceMark rm(THREAD);
2002 HandleMark hm(THREAD);
2003 GetStackTraceHandshakeClosure gsthc(Handle(THREAD, thread_oop));
2004 if (is_virtual) {
2005 Handshake::execute(&gsthc, thread_oop);
2006 } else {
2007 Handshake::execute(&gsthc, &tlh, java_thread);
2008 }
2009
2010 // Stop if no stack trace is found.
2011 if (gsthc._depth == 0) {
2012 return nullptr;
2013 }
2014
2015 // Convert to StackTraceElement array
2016 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2017 assert(k != nullptr, "must be loaded in 1.4+");
2018 if (k->should_be_initialized()) {
2019 k->initialize(CHECK_NULL);
2020 }
2021 refArrayHandle trace = oopFactory::new_refArray_handle(k, gsthc._depth, CHECK_NULL);
2022
2023 for (int i = 0; i < gsthc._depth; i++) {
2024 methodHandle method(THREAD, gsthc._methods.at(i));
2025 oop element = java_lang_StackTraceElement::create(method,
2026 gsthc._bcis.at(i),
2027 CHECK_NULL);
2028 trace->obj_at_put(i, element);
2029 }
2030
2031 return trace();
2032 }
2033
2034 const char* java_lang_Thread::thread_status_name(oop java_thread) {
2035 JavaThreadStatus status = get_thread_status(java_thread);
2036 switch (status) {
2037 case JavaThreadStatus::NEW : return "NEW";
2038 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
2039 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
2040 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
2041 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
2292 macro(_cause_offset, k, "cause", throwable_signature, false); \
2293 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2294
2295 void java_lang_Throwable::compute_offsets() {
2296 InstanceKlass* k = vmClasses::Throwable_klass();
2297 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2298 }
2299
2300 #if INCLUDE_CDS
2301 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2302 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2303 }
2304 #endif
2305
2306 oop java_lang_Throwable::unassigned_stacktrace() {
2307 InstanceKlass* ik = vmClasses::Throwable_klass();
2308 oop base = ik->static_field_base_raw();
2309 return base->obj_field(_static_unassigned_stacktrace_offset);
2310 }
2311
2312 refArrayOop java_lang_Throwable::backtrace(oop throwable) {
2313 return (refArrayOop)throwable->obj_field_acquire(_backtrace_offset);
2314 }
2315
2316
2317 void java_lang_Throwable::set_backtrace(oop throwable, refArrayOop value) {
2318 throwable->release_obj_field_put(_backtrace_offset, value);
2319 }
2320
2321 int java_lang_Throwable::depth(oop throwable) {
2322 return throwable->int_field(_depth_offset);
2323 }
2324
2325 void java_lang_Throwable::set_depth(oop throwable, int value) {
2326 throwable->int_field_put(_depth_offset, value);
2327 }
2328
2329 oop java_lang_Throwable::message(oop throwable) {
2330 return throwable->obj_field(_detailMessage_offset);
2331 }
2332
2333 const char* java_lang_Throwable::message_as_utf8(oop throwable) {
2334 oop msg = java_lang_Throwable::message(throwable);
2335 const char* msg_utf8 = nullptr;
2336 if (msg != nullptr) {
2337 msg_utf8 = java_lang_String::as_utf8_string(msg);
2367 st->print(": %s", java_lang_String::as_utf8_string(msg));
2368 }
2369 }
2370
2371 // After this many redefines, the stack trace is unreliable.
2372 const int MAX_VERSION = USHRT_MAX;
2373
2374 static inline bool version_matches(Method* method, int version) {
2375 assert(version < MAX_VERSION, "version is too big");
2376 return method != nullptr && (method->constants()->version() == version);
2377 }
2378
2379 // This class provides a simple wrapper over the internal structure of
2380 // exception backtrace to insulate users of the backtrace from needing
2381 // to know what it looks like.
2382 // The code of this class is not GC safe. Allocations can only happen
2383 // in expand().
2384 class BacktraceBuilder: public StackObj {
2385 friend class BacktraceIterator;
2386 private:
2387 refArrayHandle _backtrace;
2388 refArrayOop _head;
2389 typeArrayOop _methods;
2390 typeArrayOop _bcis;
2391 refArrayOop _mirrors;
2392 typeArrayOop _names; // Needed to insulate method name against redefinition.
2393 // True if the top frame of the backtrace is omitted because it shall be hidden.
2394 bool _has_hidden_top_frame;
2395 int _index;
2396 NoSafepointVerifier _nsv;
2397
2398 enum {
2399 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2400 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2401 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2402 trace_names_offset = java_lang_Throwable::trace_names_offset,
2403 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2404 trace_next_offset = java_lang_Throwable::trace_next_offset,
2405 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2406 trace_size = java_lang_Throwable::trace_size,
2407 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2408 };
2409
2410 // get info out of chunks
2411 static typeArrayOop get_methods(refArrayHandle chunk) {
2412 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2413 assert(methods != nullptr, "method array should be initialized in backtrace");
2414 return methods;
2415 }
2416 static typeArrayOop get_bcis(refArrayHandle chunk) {
2417 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2418 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2419 return bcis;
2420 }
2421 static refArrayOop get_mirrors(refArrayHandle chunk) {
2422 refArrayOop mirrors = refArrayOop(chunk->obj_at(trace_mirrors_offset));
2423 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2424 return mirrors;
2425 }
2426 static typeArrayOop get_names(refArrayHandle chunk) {
2427 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2428 assert(names != nullptr, "names array should be initialized in backtrace");
2429 return names;
2430 }
2431 static bool has_hidden_top_frame(refArrayHandle chunk) {
2432 oop hidden = chunk->obj_at(trace_hidden_offset);
2433 return hidden != nullptr;
2434 }
2435
2436 public:
2437
2438 // constructor for new backtrace
2439 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2440 expand(CHECK);
2441 _backtrace = refArrayHandle(THREAD, _head);
2442 _index = 0;
2443 }
2444
2445 BacktraceBuilder(Thread* thread, refArrayHandle backtrace) {
2446 _methods = get_methods(backtrace);
2447 _bcis = get_bcis(backtrace);
2448 _mirrors = get_mirrors(backtrace);
2449 _names = get_names(backtrace);
2450 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2451 assert(_methods->length() == _bcis->length() &&
2452 _methods->length() == _mirrors->length() &&
2453 _mirrors->length() == _names->length(),
2454 "method and source information arrays should match");
2455
2456 // head is the preallocated backtrace
2457 _head = backtrace();
2458 _backtrace = refArrayHandle(thread, _head);
2459 _index = 0;
2460 }
2461
2462 void expand(TRAPS) {
2463 refArrayHandle old_head(THREAD, _head);
2464 PauseNoSafepointVerifier pnsv(&_nsv);
2465
2466 refArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2467 refArrayHandle new_head(THREAD, head);
2468
2469 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2470 typeArrayHandle new_methods(THREAD, methods);
2471
2472 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2473 typeArrayHandle new_bcis(THREAD, bcis);
2474
2475 refArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2476 refArrayHandle new_mirrors(THREAD, mirrors);
2477
2478 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2479 typeArrayHandle new_names(THREAD, names);
2480
2481 if (!old_head.is_null()) {
2482 old_head->obj_at_put(trace_next_offset, new_head());
2483 }
2484 new_head->obj_at_put(trace_methods_offset, new_methods());
2485 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2486 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2487 new_head->obj_at_put(trace_names_offset, new_names());
2488 new_head->obj_at_put(trace_hidden_offset, nullptr);
2489
2490 _head = new_head();
2491 _methods = new_methods();
2492 _bcis = new_bcis();
2493 _mirrors = new_mirrors();
2494 _names = new_names();
2495 _index = 0;
2496 }
2497
2498 refArrayOop backtrace() {
2499 return _backtrace();
2500 }
2501
2502 inline void push(Method* method, int bci, TRAPS) {
2503 // Smear the -1 bci to 0 since the array only holds unsigned
2504 // shorts. The later line number lookup would just smear the -1
2505 // to a 0 even if it could be recorded.
2506 if (bci == SynchronizationEntryBCI) bci = 0;
2507
2508 if (_index >= trace_chunk_size) {
2509 methodHandle mhandle(THREAD, method);
2510 expand(CHECK);
2511 method = mhandle();
2512 }
2513
2514 _methods->ushort_at_put(_index, method->orig_method_idnum());
2515 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2516
2517 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2518 // klass owning the symbols alive so their refcounts aren't decremented.
2536 // available right here. _methods is a short[].
2537 assert(_methods != nullptr, "we need a legal oop");
2538 _has_hidden_top_frame = true;
2539 _head->obj_at_put(trace_hidden_offset, _methods);
2540 }
2541 }
2542 };
2543
2544 struct BacktraceElement : public StackObj {
2545 int _method_id;
2546 int _bci;
2547 int _version;
2548 Symbol* _name;
2549 Handle _mirror;
2550 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2551 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2552 };
2553
2554 class BacktraceIterator : public StackObj {
2555 int _index;
2556 refArrayHandle _result;
2557 refArrayHandle _mirrors;
2558 typeArrayHandle _methods;
2559 typeArrayHandle _bcis;
2560 typeArrayHandle _names;
2561
2562 void init(refArrayHandle result, Thread* thread) {
2563 // Get method id, bci, version and mirror from chunk
2564 _result = result;
2565 if (_result.not_null()) {
2566 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2567 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2568 _mirrors = refArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2569 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2570 _index = 0;
2571 }
2572 }
2573 public:
2574 BacktraceIterator(refArrayHandle result, Thread* thread) {
2575 init(result, thread);
2576 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2577 }
2578
2579 BacktraceElement next(Thread* thread) {
2580 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2581 _methods->ushort_at(_index),
2582 Backtrace::version_at(_bcis->int_at(_index)),
2583 Backtrace::bci_at(_bcis->int_at(_index)),
2584 _names->symbol_at(_index));
2585 _index++;
2586
2587 if (_index >= java_lang_Throwable::trace_chunk_size) {
2588 int next_offset = java_lang_Throwable::trace_next_offset;
2589 // Get next chunk
2590 refArrayHandle result (thread, refArrayOop(_result->obj_at(next_offset)));
2591 init(result, thread);
2592 }
2593 return e;
2594 }
2595
2596 bool repeat() {
2597 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2598 }
2599 };
2600
2601
2602 // Print stack trace element to the specified output stream.
2603 // The output is formatted into a stringStream and written to the outputStream in one step.
2604 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2605 int version, int bci, Symbol* name) {
2606 ResourceMark rm;
2607 stringStream ss;
2608
2609 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(mirror());
2610 const char* klass_name = holder->external_name();
2661
2662 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2663 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2664 int method_id = method->orig_method_idnum();
2665 int version = method->constants()->version();
2666 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2667 }
2668
2669 /**
2670 * Print the throwable message and its stack trace plus all causes by walking the
2671 * cause chain. The output looks the same as of Throwable.printStackTrace().
2672 */
2673 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2674 // First, print the message.
2675 print(throwable(), st);
2676 st->cr();
2677
2678 // Now print the stack trace.
2679 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2680 while (throwable.not_null()) {
2681 refArrayHandle result (THREAD, backtrace(throwable()));
2682 if (result.is_null()) {
2683 st->print_raw_cr("\t<<no stack trace available>>");
2684 return;
2685 }
2686 BacktraceIterator iter(result, THREAD);
2687
2688 while (iter.repeat()) {
2689 BacktraceElement bte = iter.next(THREAD);
2690 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2691 }
2692 if (THREAD->can_call_java()) {
2693 // Call getCause() which doesn't necessarily return the _cause field.
2694 ExceptionMark em(THREAD);
2695 JavaValue cause(T_OBJECT);
2696 JavaCalls::call_virtual(&cause,
2697 throwable,
2698 throwable->klass(),
2699 vmSymbols::getCause_name(),
2700 vmSymbols::void_throwable_signature(),
2701 THREAD);
2845
2846 // the format of the stacktrace will be:
2847 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2848 // - 0 or more <init> methods for the exception class (skipped)
2849 // - rest of the stack
2850
2851 if (!skip_fillInStackTrace_check) {
2852 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2853 throwable->is_a(method->method_holder())) {
2854 continue;
2855 }
2856 else {
2857 skip_fillInStackTrace_check = true; // gone past them all
2858 }
2859 }
2860 if (!skip_throwableInit_check) {
2861 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2862
2863 // skip <init> methods of the exception class and superclasses
2864 // This is similar to classic VM.
2865 if (method->is_object_constructor() &&
2866 throwable->is_a(method->method_holder())) {
2867 continue;
2868 } else {
2869 // there are none or we've seen them all - either way stop checking
2870 skip_throwableInit_check = true;
2871 }
2872 }
2873 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2874 if (skip_hidden) {
2875 if (total_count == 0) {
2876 // The top frame will be hidden from the stack trace.
2877 bt.set_has_hidden_top_frame();
2878 }
2879 continue;
2880 }
2881 }
2882
2883 bt.push(method, bci, CHECK);
2884 total_count++;
2885 }
2914 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2915 // Allocate stack trace - backtrace is created but not filled in
2916
2917 // No-op if stack trace is disabled
2918 if (!StackTraceInThrowable) return;
2919 BacktraceBuilder bt(CHECK); // creates a backtrace
2920 set_backtrace(throwable(), bt.backtrace());
2921 }
2922
2923
2924 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2925 // Fill in stack trace into preallocated backtrace (no GC)
2926
2927 // No-op if stack trace is disabled
2928 if (!StackTraceInThrowable) return;
2929
2930 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2931
2932 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2933
2934 refArrayHandle backtrace(THREAD, java_lang_Throwable::backtrace(throwable()));
2935 assert(backtrace.not_null(), "backtrace should have been preallocated");
2936
2937 ResourceMark rm(THREAD);
2938 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2939
2940 BacktraceBuilder bt(THREAD, backtrace);
2941
2942 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2943 // methods as preallocated errors aren't created by "java" code.
2944
2945 // fill in as much stack trace as possible
2946 int chunk_count = 0;
2947 for (;!st.at_end(); st.next()) {
2948 bt.push(st.method(), st.bci(), CHECK);
2949 chunk_count++;
2950
2951 // Bail-out for deep stacks
2952 if (chunk_count >= trace_chunk_size) break;
2953 }
2954 set_depth(throwable(), chunk_count);
2955 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2956
2957 // We support the Throwable immutability protocol defined for Java 7.
2958 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2959 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2960 }
2961
2962 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2963 refArrayHandle stack_trace_array_h, TRAPS) {
2964
2965 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2966 THROW(vmSymbols::java_lang_NullPointerException());
2967 }
2968
2969 assert(stack_trace_array_h->is_refArray(), "Stack trace array should be an array of StackTraceElement");
2970
2971 if (stack_trace_array_h->length() != depth) {
2972 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2973 }
2974
2975 refArrayHandle result(THREAD, refArrayOop(backtrace()));
2976 BacktraceIterator iter(result, THREAD);
2977
2978 int index = 0;
2979 while (iter.repeat()) {
2980 BacktraceElement bte = iter.next(THREAD);
2981
2982 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2983
2984 if (stack_trace_element.is_null()) {
2985 THROW(vmSymbols::java_lang_NullPointerException());
2986 }
2987
2988 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
2989 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2990
2991 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2992 method,
2993 bte._version,
2994 bte._bci,
2995 bte._name,
3039 vmSymbols::getStackTrace_name(),
3040 vmSymbols::getStackTrace_signature(),
3041 current);
3042 if (!current->has_pending_exception()){
3043 Handle stack_trace(current, result.get_oop());
3044 assert(stack_trace->is_objArray(), "Should be an array");
3045 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
3046 // Clear backtrace because the stacktrace should be used instead.
3047 set_backtrace(init_error(), nullptr);
3048 } else {
3049 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
3050 init_error->klass()->external_name());
3051 current->clear_pending_exception();
3052 }
3053
3054 return init_error;
3055 }
3056
3057 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
3058 JavaThread* current = JavaThread::current();
3059 refArrayHandle result(current, backtrace(throwable));
3060 BacktraceIterator iter(result, current);
3061 // No backtrace available.
3062 if (!iter.repeat()) return false;
3063
3064 // If the exception happened in a frame that has been hidden, i.e.,
3065 // omitted from the back trace, we can not compute the message.
3066 oop hidden = backtrace(throwable)->obj_at(trace_hidden_offset);
3067 if (hidden != nullptr) {
3068 return false;
3069 }
3070
3071 // Get first backtrace element.
3072 BacktraceElement bte = iter.next(current);
3073
3074 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
3075 assert(holder != nullptr, "first element should be non-null");
3076 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
3077
3078 // Original version is no longer available.
3079 if (m == nullptr || !version_matches(m, bte._version)) {
3080 return false;
3081 }
3082
3083 *method = m;
3084 *bci = bte._bci;
3085 return true;
3086 }
3204 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
3205 int java_lang_ClassFrameInfo::_flags_offset;
3206
3207 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
3208 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3209 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3210
3211 void java_lang_ClassFrameInfo::compute_offsets() {
3212 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3213 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3214 }
3215
3216 #if INCLUDE_CDS
3217 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3218 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3219 }
3220 #endif
3221
3222 static int get_flags(const methodHandle& m) {
3223 int flags = m->access_flags().as_method_flags();
3224 if (m->is_object_constructor()) {
3225 flags |= java_lang_invoke_MemberName::MN_IS_OBJECT_CONSTRUCTOR;
3226 } else {
3227 // Note: Static initializers can be here. Record them as plain methods.
3228 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3229 }
3230 if (m->caller_sensitive()) {
3231 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3232 }
3233 if (m->is_hidden()) {
3234 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3235 }
3236 assert((flags & 0xFF000000) == 0, "unexpected flags");
3237 return flags;
3238 }
3239
3240 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3241 return obj->obj_field(_classOrMemberName_offset);
3242 }
3243
3244 int java_lang_ClassFrameInfo::flags(oop obj) {
3245 return obj->int_field(_flags_offset);
3596 constructor->int_field_put(_modifiers_offset, value);
3597 }
3598
3599 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3600 constructor->obj_field_put(_signature_offset, value);
3601 }
3602
3603 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3604 constructor->obj_field_put(_annotations_offset, value);
3605 }
3606
3607 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3608 method->obj_field_put(_parameter_annotations_offset, value);
3609 }
3610
3611 int java_lang_reflect_Field::_clazz_offset;
3612 int java_lang_reflect_Field::_name_offset;
3613 int java_lang_reflect_Field::_type_offset;
3614 int java_lang_reflect_Field::_slot_offset;
3615 int java_lang_reflect_Field::_modifiers_offset;
3616 int java_lang_reflect_Field::_flags_offset;
3617 int java_lang_reflect_Field::_signature_offset;
3618 int java_lang_reflect_Field::_annotations_offset;
3619
3620 #define FIELD_FIELDS_DO(macro) \
3621 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3622 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3623 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3624 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3625 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3626 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3627 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3628 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3629
3630 void java_lang_reflect_Field::compute_offsets() {
3631 InstanceKlass* k = vmClasses::reflect_Field_klass();
3632 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3633 }
3634
3635 #if INCLUDE_CDS
3636 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3637 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3638 }
3639 #endif
3640
3641 Handle java_lang_reflect_Field::create(TRAPS) {
3642 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3643 Symbol* name = vmSymbols::java_lang_reflect_Field();
3644 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3645 InstanceKlass* ik = InstanceKlass::cast(k);
3646 // Ensure it is initialized
3671 void java_lang_reflect_Field::set_type(oop field, oop value) {
3672 field->obj_field_put(_type_offset, value);
3673 }
3674
3675 int java_lang_reflect_Field::slot(oop reflect) {
3676 return reflect->int_field(_slot_offset);
3677 }
3678
3679 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3680 reflect->int_field_put(_slot_offset, value);
3681 }
3682
3683 int java_lang_reflect_Field::modifiers(oop field) {
3684 return field->int_field(_modifiers_offset);
3685 }
3686
3687 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3688 field->int_field_put(_modifiers_offset, value);
3689 }
3690
3691 void java_lang_reflect_Field::set_flags(oop field, int value) {
3692 field->int_field_put(_flags_offset, value);
3693 }
3694
3695 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3696 field->obj_field_put(_signature_offset, value);
3697 }
3698
3699 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3700 field->obj_field_put(_annotations_offset, value);
3701 }
3702
3703 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3704 // Allocate java.lang.reflect.RecordComponent instance
3705 HandleMark hm(THREAD);
3706 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3707 assert(ik != nullptr, "must be loaded");
3708 ik->initialize(CHECK_NULL);
3709
3710 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3711
3712 Handle decl_class(THREAD, holder->java_mirror());
3972 }
3973 #endif
3974
3975 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3976 assert(obj != nullptr, "sanity");
3977 if (offset != _referent_offset) {
3978 return false;
3979 }
3980
3981 Klass* k = obj->klass();
3982 if (!k->is_instance_klass()) {
3983 return false;
3984 }
3985
3986 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3987 bool is_reference = ik->reference_type() != REF_NONE;
3988 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3989 return is_reference;
3990 }
3991
3992 int* java_lang_boxing_object::_offsets;
3993
3994 #define BOXING_FIELDS_DO(macro) \
3995 macro(java_lang_boxing_object::_offsets[T_BOOLEAN - T_BOOLEAN], vmClasses::Boolean_klass(), "value", bool_signature, false); \
3996 macro(java_lang_boxing_object::_offsets[T_CHAR - T_BOOLEAN], vmClasses::Character_klass(), "value", char_signature, false); \
3997 macro(java_lang_boxing_object::_offsets[T_FLOAT - T_BOOLEAN], vmClasses::Float_klass(), "value", float_signature, false); \
3998 macro(java_lang_boxing_object::_offsets[T_DOUBLE - T_BOOLEAN], vmClasses::Double_klass(), "value", double_signature, false); \
3999 macro(java_lang_boxing_object::_offsets[T_BYTE - T_BOOLEAN], vmClasses::Byte_klass(), "value", byte_signature, false); \
4000 macro(java_lang_boxing_object::_offsets[T_SHORT - T_BOOLEAN], vmClasses::Short_klass(), "value", short_signature, false); \
4001 macro(java_lang_boxing_object::_offsets[T_INT - T_BOOLEAN], vmClasses::Integer_klass(), "value", int_signature, false); \
4002 macro(java_lang_boxing_object::_offsets[T_LONG - T_BOOLEAN], vmClasses::Long_klass(), "value", long_signature, false);
4003
4004 void java_lang_boxing_object::compute_offsets() {
4005 assert(T_LONG - T_BOOLEAN == 7, "Sanity check");
4006 java_lang_boxing_object::_offsets = NEW_C_HEAP_ARRAY(int, 8, mtInternal);
4007 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4008 }
4009
4010 #if INCLUDE_CDS
4011 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
4012 if (f->reading()) {
4013 assert(T_LONG - T_BOOLEAN == 7, "Sanity check");
4014 java_lang_boxing_object::_offsets = NEW_C_HEAP_ARRAY(int, 8, mtInternal);
4015 }
4016 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4017 }
4018 #endif
4019
4020 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
4021 Klass* k = vmClasses::box_klass(type);
4022 if (k == nullptr) return nullptr;
4023 InstanceKlass* ik = InstanceKlass::cast(k);
4024 if (!ik->is_initialized()) {
4025 ik->initialize(CHECK_NULL);
4026 }
4027 return ik->allocate_instance(THREAD);
4028 }
4029
4030
4031 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
4032 oop box = initialize_and_allocate(type, CHECK_NULL);
4033 if (box == nullptr) return nullptr;
4034 switch (type) {
4035 case T_BOOLEAN:
4036 box->bool_field_put(value_offset(type), value->z);
4037 break;
4038 case T_CHAR:
4039 box->char_field_put(value_offset(type), value->c);
4040 break;
4041 case T_FLOAT:
4042 box->float_field_put(value_offset(type), value->f);
4043 break;
4044 case T_DOUBLE:
4045 box->double_field_put(value_offset(type), value->d);
4046 break;
4047 case T_BYTE:
4048 box->byte_field_put(value_offset(type), value->b);
4049 break;
4050 case T_SHORT:
4051 box->short_field_put(value_offset(type), value->s);
4052 break;
4053 case T_INT:
4054 box->int_field_put(value_offset(type), value->i);
4055 break;
4056 case T_LONG:
4057 box->long_field_put(value_offset(type), value->j);
4058 break;
4059 default:
4060 return nullptr;
4061 }
4062 return box;
4063 }
4064
4065
4066 BasicType java_lang_boxing_object::basic_type(oop box) {
4067 if (box == nullptr) return T_ILLEGAL;
4068 BasicType type = vmClasses::box_klass_type(box->klass());
4069 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
4070 return T_ILLEGAL;
4071 return type;
4072 }
4073
4074
4075 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
4076 BasicType type = vmClasses::box_klass_type(box->klass());
4077 switch (type) {
4078 case T_BOOLEAN:
4079 value->z = box->bool_field(value_offset(type));
4080 break;
4081 case T_CHAR:
4082 value->c = box->char_field(value_offset(type));
4083 break;
4084 case T_FLOAT:
4085 value->f = box->float_field(value_offset(type));
4086 break;
4087 case T_DOUBLE:
4088 value->d = box->double_field(value_offset(type));
4089 break;
4090 case T_BYTE:
4091 value->b = box->byte_field(value_offset(type));
4092 break;
4093 case T_SHORT:
4094 value->s = box->short_field(value_offset(type));
4095 break;
4096 case T_INT:
4097 value->i = box->int_field(value_offset(type));
4098 break;
4099 case T_LONG:
4100 value->j = box->long_field(value_offset(type));
4101 break;
4102 default:
4103 return T_ILLEGAL;
4104 } // end switch
4105 return type;
4106 }
4107
4108
4109 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
4110 BasicType type = vmClasses::box_klass_type(box->klass());
4111 switch (type) {
4112 case T_BOOLEAN:
4113 box->bool_field_put(value_offset(type), value->z);
4114 break;
4115 case T_CHAR:
4116 box->char_field_put(value_offset(type), value->c);
4117 break;
4118 case T_FLOAT:
4119 box->float_field_put(value_offset(type), value->f);
4120 break;
4121 case T_DOUBLE:
4122 box->double_field_put(value_offset(type), value->d);
4123 break;
4124 case T_BYTE:
4125 box->byte_field_put(value_offset(type), value->b);
4126 break;
4127 case T_SHORT:
4128 box->short_field_put(value_offset(type), value->s);
4129 break;
4130 case T_INT:
4131 box->int_field_put(value_offset(type), value->i);
4132 break;
4133 case T_LONG:
4134 box->long_field_put(value_offset(type), value->j);
4135 break;
4136 default:
4137 return T_ILLEGAL;
4138 } // end switch
4139 return type;
4140 }
4141
4142
4143 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
4144 switch (type) {
4145 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
4146 case T_CHAR: st->print("%d", value->c); break;
4147 case T_BYTE: st->print("%d", value->b); break;
4148 case T_SHORT: st->print("%d", value->s); break;
4149 case T_INT: st->print("%d", value->i); break;
4150 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
4151 case T_FLOAT: st->print("%f", value->f); break;
4152 case T_DOUBLE: st->print("%lf", value->d); break;
4153 default: st->print("type %d?", type); break;
4154 }
4342 #define ABIDescriptor_FIELDS_DO(macro) \
4343 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4344 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4345 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4346 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4347 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4348 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4349 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4350
4351 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4352 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4353 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4354 }
4355
4356 #if INCLUDE_CDS
4357 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4358 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4359 }
4360 #endif
4361
4362 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4363 return oop_cast<refArrayOop>(entry->obj_field(_inputStorage_offset));
4364 }
4365
4366 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4367 return oop_cast<refArrayOop>(entry->obj_field(_outputStorage_offset));
4368 }
4369
4370 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4371 return oop_cast<refArrayOop>(entry->obj_field(_volatileStorage_offset));
4372 }
4373
4374 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4375 return entry->int_field(_stackAlignment_offset);
4376 }
4377
4378 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4379 return entry->int_field(_shadowSpace_offset);
4380 }
4381
4382 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4383 return entry->obj_field(_scratch1_offset);
4384 }
4385
4386 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4387 return entry->obj_field(_scratch2_offset);
4388 }
4389
4390 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4391 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4434
4435 #define CallConv_FIELDS_DO(macro) \
4436 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4437 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4438
4439 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4440 return obj != nullptr && is_subclass(obj->klass());
4441 }
4442
4443 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4444 InstanceKlass* k = vmClasses::CallConv_klass();
4445 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4446 }
4447
4448 #if INCLUDE_CDS
4449 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4450 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4451 }
4452 #endif
4453
4454 refArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4455 return oop_cast<refArrayOop>(entry->obj_field(_argRegs_offset));
4456 }
4457
4458 refArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4459 return oop_cast<refArrayOop>(entry->obj_field(_retRegs_offset));
4460 }
4461
4462 oop java_lang_invoke_MethodHandle::type(oop mh) {
4463 return mh->obj_field(_type_offset);
4464 }
4465
4466 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4467 mh->obj_field_put(_type_offset, mtype);
4468 }
4469
4470 oop java_lang_invoke_MethodHandle::form(oop mh) {
4471 assert(_form_offset != 0, "");
4472 return mh->obj_field(_form_offset);
4473 }
4474
4475 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4476 assert(_form_offset != 0, "");
4477 mh->obj_field_put(_form_offset, lform);
4478 }
4479
4502 oop java_lang_invoke_MemberName::type(oop mname) {
4503 assert(is_instance(mname), "wrong type");
4504 return mname->obj_field(_type_offset);
4505 }
4506
4507 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4508 assert(is_instance(mname), "wrong type");
4509 mname->obj_field_put(_type_offset, type);
4510 }
4511
4512 int java_lang_invoke_MemberName::flags(oop mname) {
4513 assert(is_instance(mname), "wrong type");
4514 return mname->int_field(_flags_offset);
4515 }
4516
4517 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4518 assert(is_instance(mname), "wrong type");
4519 mname->int_field_put(_flags_offset, flags);
4520 }
4521
4522 // Return vmtarget from ResolvedMethodName method field through indirection
4523 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4524 assert(is_instance(mname), "wrong type");
4525 oop method = mname->obj_field(_method_offset);
4526 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4527 }
4528
4529 bool java_lang_invoke_MemberName::is_method(oop mname) {
4530 assert(is_instance(mname), "must be MemberName");
4531 return (flags(mname) & (MN_IS_METHOD | MN_IS_OBJECT_CONSTRUCTOR)) > 0;
4532 }
4533
4534 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4535 assert(is_instance(mname), "wrong type");
4536 mname->obj_field_put(_method_offset, resolved_method);
4537 }
4538
4539 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4540 assert(is_instance(mname), "wrong type");
4541 return (intptr_t) mname->address_field(_vmindex_offset);
4542 }
4543
4544 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4545 assert(is_instance(mname), "wrong type");
4546 mname->address_field_put(_vmindex_offset, (address) index);
4547 }
4548
4549
4550 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4551 assert(is_instance(resolved_method), "wrong type");
4615 int java_lang_invoke_MethodType::_rtype_offset;
4616 int java_lang_invoke_MethodType::_ptypes_offset;
4617
4618 #define METHODTYPE_FIELDS_DO(macro) \
4619 macro(_rtype_offset, k, "rtype", class_signature, false); \
4620 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4621
4622 void java_lang_invoke_MethodType::compute_offsets() {
4623 InstanceKlass* k = vmClasses::MethodType_klass();
4624 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4625 }
4626
4627 #if INCLUDE_CDS
4628 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4629 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4630 }
4631 #endif
4632
4633 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4634 st->print("(");
4635 refArrayOop pts = ptypes(mt);
4636 if (pts != nullptr) {
4637 for (int i = 0, limit = pts->length(); i < limit; i++) {
4638 java_lang_Class::print_signature(pts->obj_at(i), st);
4639 }
4640 } else {
4641 st->print("null");
4642 }
4643 st->print(")");
4644 oop rt = rtype(mt);
4645 if (rt != nullptr) {
4646 java_lang_Class::print_signature(rt, st);
4647 } else {
4648 st->print("null");
4649 }
4650 }
4651
4652 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4653 ResourceMark rm;
4654 stringStream buffer(128);
4655 print_signature(mt, &buffer);
4666
4667 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4668 if (mt1 == mt2)
4669 return true;
4670 if (rtype(mt1) != rtype(mt2))
4671 return false;
4672 if (ptype_count(mt1) != ptype_count(mt2))
4673 return false;
4674 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4675 if (ptype(mt1, i) != ptype(mt2, i))
4676 return false;
4677 }
4678 return true;
4679 }
4680
4681 oop java_lang_invoke_MethodType::rtype(oop mt) {
4682 assert(is_instance(mt), "must be a MethodType");
4683 return mt->obj_field(_rtype_offset);
4684 }
4685
4686 refArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4687 assert(is_instance(mt), "must be a MethodType");
4688 return (refArrayOop) mt->obj_field(_ptypes_offset);
4689 }
4690
4691 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4692 return ptypes(mt)->obj_at(idx);
4693 }
4694
4695 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4696 return ptypes(mt)->length();
4697 }
4698
4699 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4700 refArrayOop pts = ptypes(mt);
4701 int count = pts->length();
4702 int slots = 0;
4703 for (int i = 0; i < count; i++) {
4704 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4705 slots += type2size[bt];
4706 }
4707 return slots;
4708 }
4709
4710 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4711 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4712 return type2size[bt];
4713 }
4714
4715
4716 // Support for java_lang_invoke_CallSite
4717
4718 int java_lang_invoke_CallSite::_target_offset;
4719 int java_lang_invoke_CallSite::_vmdependencies_offset;
4720 int java_lang_invoke_CallSite::_last_cleanup_offset;
5105 }
5106
5107 bool vector_VectorPayload::is_instance(oop obj) {
5108 return obj != nullptr && is_subclass(obj->klass());
5109 }
5110
5111 int java_lang_Integer_IntegerCache::_static_cache_offset;
5112 int java_lang_Long_LongCache::_static_cache_offset;
5113 int java_lang_Character_CharacterCache::_static_cache_offset;
5114 int java_lang_Short_ShortCache::_static_cache_offset;
5115 int java_lang_Byte_ByteCache::_static_cache_offset;
5116
5117 #define INTEGER_CACHE_FIELDS_DO(macro) \
5118 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5119
5120 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5121 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5122 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5123 }
5124
5125 refArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5126 oop base = ik->static_field_base_raw();
5127 return refArrayOop(base->obj_field(_static_cache_offset));
5128 }
5129
5130 Symbol* java_lang_Integer_IntegerCache::symbol() {
5131 return vmSymbols::java_lang_Integer_IntegerCache();
5132 }
5133
5134 #if INCLUDE_CDS
5135 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5136 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5137 }
5138 #endif
5139 #undef INTEGER_CACHE_FIELDS_DO
5140
5141 jint java_lang_Integer::value(oop obj) {
5142 jvalue v;
5143 java_lang_boxing_object::get_value(obj, &v);
5144 return v.i;
5145 }
5146
5147 #define LONG_CACHE_FIELDS_DO(macro) \
5148 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5149
5150 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5151 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5152 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5153 }
5154
5155 refArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5156 oop base = ik->static_field_base_raw();
5157 return refArrayOop(base->obj_field(_static_cache_offset));
5158 }
5159
5160 Symbol* java_lang_Long_LongCache::symbol() {
5161 return vmSymbols::java_lang_Long_LongCache();
5162 }
5163
5164 #if INCLUDE_CDS
5165 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5166 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5167 }
5168 #endif
5169 #undef LONG_CACHE_FIELDS_DO
5170
5171 jlong java_lang_Long::value(oop obj) {
5172 jvalue v;
5173 java_lang_boxing_object::get_value(obj, &v);
5174 return v.j;
5175 }
5176
5177 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5178 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5179
5180 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5181 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5182 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5183 }
5184
5185 refArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5186 oop base = ik->static_field_base_raw();
5187 return refArrayOop(base->obj_field(_static_cache_offset));
5188 }
5189
5190 Symbol* java_lang_Character_CharacterCache::symbol() {
5191 return vmSymbols::java_lang_Character_CharacterCache();
5192 }
5193
5194 #if INCLUDE_CDS
5195 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5196 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5197 }
5198 #endif
5199 #undef CHARACTER_CACHE_FIELDS_DO
5200
5201 jchar java_lang_Character::value(oop obj) {
5202 jvalue v;
5203 java_lang_boxing_object::get_value(obj, &v);
5204 return v.c;
5205 }
5206
5207 #define SHORT_CACHE_FIELDS_DO(macro) \
5208 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5209
5210 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5211 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5212 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5213 }
5214
5215 refArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5216 oop base = ik->static_field_base_raw();
5217 return refArrayOop(base->obj_field(_static_cache_offset));
5218 }
5219
5220 Symbol* java_lang_Short_ShortCache::symbol() {
5221 return vmSymbols::java_lang_Short_ShortCache();
5222 }
5223
5224 #if INCLUDE_CDS
5225 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5226 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5227 }
5228 #endif
5229 #undef SHORT_CACHE_FIELDS_DO
5230
5231 jshort java_lang_Short::value(oop obj) {
5232 jvalue v;
5233 java_lang_boxing_object::get_value(obj, &v);
5234 return v.s;
5235 }
5236
5237 #define BYTE_CACHE_FIELDS_DO(macro) \
5238 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5239
5240 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5241 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5242 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5243 }
5244
5245 refArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5246 oop base = ik->static_field_base_raw();
5247 return refArrayOop(base->obj_field(_static_cache_offset));
5248 }
5249
5250 Symbol* java_lang_Byte_ByteCache::symbol() {
5251 return vmSymbols::java_lang_Byte_ByteCache();
5252 }
5253
5254 #if INCLUDE_CDS
5255 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5256 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5257 }
5258 #endif
5259 #undef BYTE_CACHE_FIELDS_DO
5260
5261 jbyte java_lang_Byte::value(oop obj) {
5262 jvalue v;
5263 java_lang_boxing_object::get_value(obj, &v);
5264 return v.b;
5265 }
5266
5267 int java_lang_Boolean::_static_TRUE_offset;
5504 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5505 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5506 return false;
5507 }
5508 if (fd.is_static()) {
5509 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5510 return false;
5511 }
5512 if (fd.offset() == deserialized_offset ) {
5513 return true;
5514 } else {
5515 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5516 klass_name, field_name, deserialized_offset, fd.offset());
5517 return false;
5518 }
5519 }
5520
5521 void JavaClasses::check_offsets() {
5522 bool valid = true;
5523
5524 #define CHECK_OFFSET(klass_name, type, field_sig) \
5525 valid &= check_offset(klass_name, java_lang_boxing_object::value_offset(type), "value", field_sig)
5526
5527 CHECK_OFFSET("java/lang/Boolean", T_BOOLEAN, "Z");
5528 CHECK_OFFSET("java/lang/Character", T_CHAR, "C");
5529 CHECK_OFFSET("java/lang/Float", T_FLOAT, "F");
5530 CHECK_OFFSET("java/lang/Double", T_DOUBLE, "D");
5531 CHECK_OFFSET("java/lang/Byte", T_BYTE, "B");
5532 CHECK_OFFSET("java/lang/Short", T_SHORT, "S");
5533 CHECK_OFFSET("java/lang/Integer", T_INT, "I");
5534 CHECK_OFFSET("java/lang/Long", T_LONG, "J");
5535
5536 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5537 }
5538
5539 #endif // PRODUCT
5540
5541 int InjectedField::compute_offset() {
5542 InstanceKlass* ik = klass();
5543 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5544 if (!may_be_java && !fs.field_flags().is_injected()) {
5545 // Only look at injected fields
5546 continue;
5547 }
5548 if (fs.name() == name() && fs.signature() == signature()) {
5549 return fs.offset();
5550 }
5551 }
5552 ResourceMark rm;
5553 tty->print_cr("Invalid layout of %s at %s/%s%s", ik->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : "");
5554 #ifndef PRODUCT
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