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
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
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
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
1488 const char* name = nullptr;
1489 if (is_primitive(java_class)) {
1490 name = type2name(primitive_type(java_class));
1491 } else {
1492 name = as_Klass(java_class)->external_name();
1493 }
1494 if (name == nullptr) {
1495 name = "<null>";
1496 }
1497 return name;
1498 }
1499
1500 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1501 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1502 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1503 return k;
1504 }
1505
1506 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1507 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1508 assert(!klass->is_refined_objArray_klass(), "should not be ref or flat array klass");
1509 java_class->release_metadata_field_put(_array_klass_offset, klass);
1510 }
1511
1512
1513 BasicType java_lang_Class::primitive_type(oop java_class) {
1514 assert(is_primitive(java_class), "just checking");
1515 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1516 BasicType type = T_VOID;
1517 if (ak != nullptr) {
1518 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1519 type = ArrayKlass::cast(ak)->element_type();
1520 } else {
1521 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1522 }
1523 #ifdef ASSERT
1524 if (CDSConfig::is_dumping_heap()) {
1525 oop mirror = Universe::java_mirror(type);
1526 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1527 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1528 } else {
1548
1549 oop java_lang_Class::primitive_mirror(BasicType t) {
1550 oop mirror = Universe::java_mirror(t);
1551 assert(mirror != nullptr && mirror->is_a(vmClasses::Class_klass()), "must be a Class");
1552 assert(is_primitive(mirror), "must be primitive");
1553 return mirror;
1554 }
1555
1556 #define CLASS_FIELDS_DO(macro) \
1557 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \
1558 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \
1559 macro(_component_mirror_offset, k, "componentType", class_signature, false); \
1560 macro(_module_offset, k, "module", module_signature, false); \
1561 macro(_name_offset, k, "name", string_signature, false); \
1562 macro(_classData_offset, k, "classData", object_signature, false); \
1563 macro(_reflectionData_offset, k, "reflectionData", java_lang_ref_SoftReference_signature, false); \
1564 macro(_signers_offset, k, "signers", object_array_signature, false); \
1565 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), char_signature, false); \
1566 macro(_raw_access_flags_offset, k, "classFileAccessFlags", char_signature, false); \
1567 macro(_protection_domain_offset, k, "protectionDomain", java_security_ProtectionDomain_signature, false); \
1568 macro(_is_primitive_offset, k, "primitive", bool_signature, false); \
1569 macro(_is_identity_offset, k, "identity", bool_signature, false);
1570
1571 void java_lang_Class::compute_offsets() {
1572 if (_offsets_computed) {
1573 return;
1574 }
1575
1576 _offsets_computed = true;
1577
1578 InstanceKlass* k = vmClasses::Class_klass();
1579 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET);
1580 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
1581 }
1582
1583 #if INCLUDE_CDS
1584 void java_lang_Class::serialize_offsets(SerializeClosure* f) {
1585 f->do_bool(&_offsets_computed);
1586
1587 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
1588
1589 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);
1999 ResourceMark rm(THREAD);
2000 HandleMark hm(THREAD);
2001 GetStackTraceHandshakeClosure gsthc(Handle(THREAD, thread_oop));
2002 if (is_virtual) {
2003 Handshake::execute(&gsthc, thread_oop);
2004 } else {
2005 Handshake::execute(&gsthc, &tlh, java_thread);
2006 }
2007
2008 // Stop if no stack trace is found.
2009 if (gsthc._depth == 0) {
2010 return nullptr;
2011 }
2012
2013 // Convert to StackTraceElement array
2014 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2015 assert(k != nullptr, "must be loaded in 1.4+");
2016 if (k->should_be_initialized()) {
2017 k->initialize(CHECK_NULL);
2018 }
2019 refArrayHandle trace = oopFactory::new_refArray_handle(k, gsthc._depth, CHECK_NULL);
2020
2021 for (int i = 0; i < gsthc._depth; i++) {
2022 methodHandle method(THREAD, gsthc._methods.at(i));
2023 oop element = java_lang_StackTraceElement::create(method,
2024 gsthc._bcis.at(i),
2025 CHECK_NULL);
2026 trace->obj_at_put(i, element);
2027 }
2028
2029 return trace();
2030 }
2031
2032 const char* java_lang_Thread::thread_status_name(oop java_thread) {
2033 JavaThreadStatus status = get_thread_status(java_thread);
2034 switch (status) {
2035 case JavaThreadStatus::NEW : return "NEW";
2036 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
2037 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
2038 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
2039 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
2290 macro(_cause_offset, k, "cause", throwable_signature, false); \
2291 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2292
2293 void java_lang_Throwable::compute_offsets() {
2294 InstanceKlass* k = vmClasses::Throwable_klass();
2295 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2296 }
2297
2298 #if INCLUDE_CDS
2299 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2300 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2301 }
2302 #endif
2303
2304 oop java_lang_Throwable::unassigned_stacktrace() {
2305 InstanceKlass* ik = vmClasses::Throwable_klass();
2306 oop base = ik->static_field_base_raw();
2307 return base->obj_field(_static_unassigned_stacktrace_offset);
2308 }
2309
2310 refArrayOop java_lang_Throwable::backtrace(oop throwable) {
2311 return (refArrayOop)throwable->obj_field_acquire(_backtrace_offset);
2312 }
2313
2314
2315 void java_lang_Throwable::set_backtrace(oop throwable, refArrayOop value) {
2316 throwable->release_obj_field_put(_backtrace_offset, value);
2317 }
2318
2319 int java_lang_Throwable::depth(oop throwable) {
2320 return throwable->int_field(_depth_offset);
2321 }
2322
2323 void java_lang_Throwable::set_depth(oop throwable, int value) {
2324 throwable->int_field_put(_depth_offset, value);
2325 }
2326
2327 oop java_lang_Throwable::message(oop throwable) {
2328 return throwable->obj_field(_detailMessage_offset);
2329 }
2330
2331 const char* java_lang_Throwable::message_as_utf8(oop throwable) {
2332 oop msg = java_lang_Throwable::message(throwable);
2333 const char* msg_utf8 = nullptr;
2334 if (msg != nullptr) {
2335 msg_utf8 = java_lang_String::as_utf8_string(msg);
2365 st->print(": %s", java_lang_String::as_utf8_string(msg));
2366 }
2367 }
2368
2369 // After this many redefines, the stack trace is unreliable.
2370 const int MAX_VERSION = USHRT_MAX;
2371
2372 static inline bool version_matches(Method* method, int version) {
2373 assert(version < MAX_VERSION, "version is too big");
2374 return method != nullptr && (method->constants()->version() == version);
2375 }
2376
2377 // This class provides a simple wrapper over the internal structure of
2378 // exception backtrace to insulate users of the backtrace from needing
2379 // to know what it looks like.
2380 // The code of this class is not GC safe. Allocations can only happen
2381 // in expand().
2382 class BacktraceBuilder: public StackObj {
2383 friend class BacktraceIterator;
2384 private:
2385 refArrayHandle _backtrace;
2386 refArrayOop _head;
2387 typeArrayOop _methods;
2388 typeArrayOop _bcis;
2389 refArrayOop _mirrors;
2390 typeArrayOop _names; // Needed to insulate method name against redefinition.
2391 // True if the top frame of the backtrace is omitted because it shall be hidden.
2392 bool _has_hidden_top_frame;
2393 int _index;
2394 NoSafepointVerifier _nsv;
2395
2396 enum {
2397 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2398 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2399 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2400 trace_names_offset = java_lang_Throwable::trace_names_offset,
2401 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2402 trace_next_offset = java_lang_Throwable::trace_next_offset,
2403 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2404 trace_size = java_lang_Throwable::trace_size,
2405 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2406 };
2407
2408 // get info out of chunks
2409 static typeArrayOop get_methods(refArrayHandle chunk) {
2410 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2411 assert(methods != nullptr, "method array should be initialized in backtrace");
2412 return methods;
2413 }
2414 static typeArrayOop get_bcis(refArrayHandle chunk) {
2415 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2416 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2417 return bcis;
2418 }
2419 static refArrayOop get_mirrors(refArrayHandle chunk) {
2420 refArrayOop mirrors = refArrayOop(chunk->obj_at(trace_mirrors_offset));
2421 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2422 return mirrors;
2423 }
2424 static typeArrayOop get_names(refArrayHandle chunk) {
2425 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2426 assert(names != nullptr, "names array should be initialized in backtrace");
2427 return names;
2428 }
2429 static bool has_hidden_top_frame(refArrayHandle chunk) {
2430 oop hidden = chunk->obj_at(trace_hidden_offset);
2431 return hidden != nullptr;
2432 }
2433
2434 public:
2435
2436 // constructor for new backtrace
2437 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2438 expand(CHECK);
2439 _backtrace = refArrayHandle(THREAD, _head);
2440 _index = 0;
2441 }
2442
2443 BacktraceBuilder(Thread* thread, refArrayHandle backtrace) {
2444 _methods = get_methods(backtrace);
2445 _bcis = get_bcis(backtrace);
2446 _mirrors = get_mirrors(backtrace);
2447 _names = get_names(backtrace);
2448 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2449 assert(_methods->length() == _bcis->length() &&
2450 _methods->length() == _mirrors->length() &&
2451 _mirrors->length() == _names->length(),
2452 "method and source information arrays should match");
2453
2454 // head is the preallocated backtrace
2455 _head = backtrace();
2456 _backtrace = refArrayHandle(thread, _head);
2457 _index = 0;
2458 }
2459
2460 void expand(TRAPS) {
2461 refArrayHandle old_head(THREAD, _head);
2462 PauseNoSafepointVerifier pnsv(&_nsv);
2463
2464 refArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2465 refArrayHandle new_head(THREAD, head);
2466
2467 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2468 typeArrayHandle new_methods(THREAD, methods);
2469
2470 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2471 typeArrayHandle new_bcis(THREAD, bcis);
2472
2473 refArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2474 refArrayHandle new_mirrors(THREAD, mirrors);
2475
2476 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2477 typeArrayHandle new_names(THREAD, names);
2478
2479 if (!old_head.is_null()) {
2480 old_head->obj_at_put(trace_next_offset, new_head());
2481 }
2482 new_head->obj_at_put(trace_methods_offset, new_methods());
2483 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2484 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2485 new_head->obj_at_put(trace_names_offset, new_names());
2486 new_head->obj_at_put(trace_hidden_offset, nullptr);
2487
2488 _head = new_head();
2489 _methods = new_methods();
2490 _bcis = new_bcis();
2491 _mirrors = new_mirrors();
2492 _names = new_names();
2493 _index = 0;
2494 }
2495
2496 refArrayOop backtrace() {
2497 return _backtrace();
2498 }
2499
2500 inline void push(Method* method, int bci, TRAPS) {
2501 // Smear the -1 bci to 0 since the array only holds unsigned
2502 // shorts. The later line number lookup would just smear the -1
2503 // to a 0 even if it could be recorded.
2504 if (bci == SynchronizationEntryBCI) bci = 0;
2505
2506 if (_index >= trace_chunk_size) {
2507 methodHandle mhandle(THREAD, method);
2508 expand(CHECK);
2509 method = mhandle();
2510 }
2511
2512 _methods->ushort_at_put(_index, method->orig_method_idnum());
2513 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2514
2515 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2516 // klass owning the symbols alive so their refcounts aren't decremented.
2534 // available right here. _methods is a short[].
2535 assert(_methods != nullptr, "we need a legal oop");
2536 _has_hidden_top_frame = true;
2537 _head->obj_at_put(trace_hidden_offset, _methods);
2538 }
2539 }
2540 };
2541
2542 struct BacktraceElement : public StackObj {
2543 int _method_id;
2544 int _bci;
2545 int _version;
2546 Symbol* _name;
2547 Handle _mirror;
2548 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2549 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2550 };
2551
2552 class BacktraceIterator : public StackObj {
2553 int _index;
2554 refArrayHandle _result;
2555 refArrayHandle _mirrors;
2556 typeArrayHandle _methods;
2557 typeArrayHandle _bcis;
2558 typeArrayHandle _names;
2559
2560 void init(refArrayHandle result, Thread* thread) {
2561 // Get method id, bci, version and mirror from chunk
2562 _result = result;
2563 if (_result.not_null()) {
2564 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2565 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2566 _mirrors = refArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2567 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2568 _index = 0;
2569 }
2570 }
2571 public:
2572 BacktraceIterator(refArrayHandle result, Thread* thread) {
2573 init(result, thread);
2574 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2575 }
2576
2577 BacktraceElement next(Thread* thread) {
2578 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2579 _methods->ushort_at(_index),
2580 Backtrace::version_at(_bcis->int_at(_index)),
2581 Backtrace::bci_at(_bcis->int_at(_index)),
2582 _names->symbol_at(_index));
2583 _index++;
2584
2585 if (_index >= java_lang_Throwable::trace_chunk_size) {
2586 int next_offset = java_lang_Throwable::trace_next_offset;
2587 // Get next chunk
2588 refArrayHandle result (thread, refArrayOop(_result->obj_at(next_offset)));
2589 init(result, thread);
2590 }
2591 return e;
2592 }
2593
2594 bool repeat() {
2595 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2596 }
2597 };
2598
2599
2600 // Print stack trace element to the specified output stream.
2601 // The output is formatted into a stringStream and written to the outputStream in one step.
2602 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2603 int version, int bci, Symbol* name) {
2604 ResourceMark rm;
2605 stringStream ss;
2606
2607 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(mirror());
2608 const char* klass_name = holder->external_name();
2659
2660 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2661 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2662 int method_id = method->orig_method_idnum();
2663 int version = method->constants()->version();
2664 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2665 }
2666
2667 /**
2668 * Print the throwable message and its stack trace plus all causes by walking the
2669 * cause chain. The output looks the same as of Throwable.printStackTrace().
2670 */
2671 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2672 // First, print the message.
2673 print(throwable(), st);
2674 st->cr();
2675
2676 // Now print the stack trace.
2677 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2678 while (throwable.not_null()) {
2679 refArrayHandle result (THREAD, backtrace(throwable()));
2680 if (result.is_null()) {
2681 st->print_raw_cr("\t<<no stack trace available>>");
2682 return;
2683 }
2684 BacktraceIterator iter(result, THREAD);
2685
2686 while (iter.repeat()) {
2687 BacktraceElement bte = iter.next(THREAD);
2688 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2689 }
2690 if (THREAD->can_call_java()) {
2691 // Call getCause() which doesn't necessarily return the _cause field.
2692 ExceptionMark em(THREAD);
2693 JavaValue cause(T_OBJECT);
2694 JavaCalls::call_virtual(&cause,
2695 throwable,
2696 throwable->klass(),
2697 vmSymbols::getCause_name(),
2698 vmSymbols::void_throwable_signature(),
2699 THREAD);
2843
2844 // the format of the stacktrace will be:
2845 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2846 // - 0 or more <init> methods for the exception class (skipped)
2847 // - rest of the stack
2848
2849 if (!skip_fillInStackTrace_check) {
2850 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2851 throwable->is_a(method->method_holder())) {
2852 continue;
2853 }
2854 else {
2855 skip_fillInStackTrace_check = true; // gone past them all
2856 }
2857 }
2858 if (!skip_throwableInit_check) {
2859 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2860
2861 // skip <init> methods of the exception class and superclasses
2862 // This is similar to classic VM.
2863 if (method->is_object_constructor() &&
2864 throwable->is_a(method->method_holder())) {
2865 continue;
2866 } else {
2867 // there are none or we've seen them all - either way stop checking
2868 skip_throwableInit_check = true;
2869 }
2870 }
2871 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2872 if (skip_hidden) {
2873 if (total_count == 0) {
2874 // The top frame will be hidden from the stack trace.
2875 bt.set_has_hidden_top_frame();
2876 }
2877 continue;
2878 }
2879 }
2880
2881 bt.push(method, bci, CHECK);
2882 total_count++;
2883 }
2912 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2913 // Allocate stack trace - backtrace is created but not filled in
2914
2915 // No-op if stack trace is disabled
2916 if (!StackTraceInThrowable) return;
2917 BacktraceBuilder bt(CHECK); // creates a backtrace
2918 set_backtrace(throwable(), bt.backtrace());
2919 }
2920
2921
2922 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2923 // Fill in stack trace into preallocated backtrace (no GC)
2924
2925 // No-op if stack trace is disabled
2926 if (!StackTraceInThrowable) return;
2927
2928 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2929
2930 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2931
2932 refArrayHandle backtrace(THREAD, java_lang_Throwable::backtrace(throwable()));
2933 assert(backtrace.not_null(), "backtrace should have been preallocated");
2934
2935 ResourceMark rm(THREAD);
2936 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2937
2938 BacktraceBuilder bt(THREAD, backtrace);
2939
2940 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2941 // methods as preallocated errors aren't created by "java" code.
2942
2943 // fill in as much stack trace as possible
2944 int chunk_count = 0;
2945 for (;!st.at_end(); st.next()) {
2946 bt.push(st.method(), st.bci(), CHECK);
2947 chunk_count++;
2948
2949 // Bail-out for deep stacks
2950 if (chunk_count >= trace_chunk_size) break;
2951 }
2952 set_depth(throwable(), chunk_count);
2953 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2954
2955 // We support the Throwable immutability protocol defined for Java 7.
2956 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2957 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2958 }
2959
2960 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2961 refArrayHandle stack_trace_array_h, TRAPS) {
2962
2963 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2964 THROW(vmSymbols::java_lang_NullPointerException());
2965 }
2966
2967 assert(stack_trace_array_h->is_refArray(), "Stack trace array should be an array of StackTraceElement");
2968
2969 if (stack_trace_array_h->length() != depth) {
2970 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2971 }
2972
2973 refArrayHandle result(THREAD, refArrayOop(backtrace()));
2974 BacktraceIterator iter(result, THREAD);
2975
2976 int index = 0;
2977 while (iter.repeat()) {
2978 BacktraceElement bte = iter.next(THREAD);
2979
2980 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2981
2982 if (stack_trace_element.is_null()) {
2983 THROW(vmSymbols::java_lang_NullPointerException());
2984 }
2985
2986 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
2987 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2988
2989 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2990 method,
2991 bte._version,
2992 bte._bci,
2993 bte._name,
3037 vmSymbols::getStackTrace_name(),
3038 vmSymbols::getStackTrace_signature(),
3039 current);
3040 if (!current->has_pending_exception()){
3041 Handle stack_trace(current, result.get_oop());
3042 assert(stack_trace->is_objArray(), "Should be an array");
3043 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
3044 // Clear backtrace because the stacktrace should be used instead.
3045 set_backtrace(init_error(), nullptr);
3046 } else {
3047 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
3048 init_error->klass()->external_name());
3049 current->clear_pending_exception();
3050 }
3051
3052 return init_error;
3053 }
3054
3055 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
3056 JavaThread* current = JavaThread::current();
3057 refArrayHandle result(current, backtrace(throwable));
3058 BacktraceIterator iter(result, current);
3059 // No backtrace available.
3060 if (!iter.repeat()) return false;
3061
3062 // If the exception happened in a frame that has been hidden, i.e.,
3063 // omitted from the back trace, we can not compute the message.
3064 oop hidden = backtrace(throwable)->obj_at(trace_hidden_offset);
3065 if (hidden != nullptr) {
3066 return false;
3067 }
3068
3069 // Get first backtrace element.
3070 BacktraceElement bte = iter.next(current);
3071
3072 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
3073 assert(holder != nullptr, "first element should be non-null");
3074 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
3075
3076 // Original version is no longer available.
3077 if (m == nullptr || !version_matches(m, bte._version)) {
3078 return false;
3079 }
3080
3081 *method = m;
3082 *bci = bte._bci;
3083 return true;
3084 }
3202 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
3203 int java_lang_ClassFrameInfo::_flags_offset;
3204
3205 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
3206 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3207 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3208
3209 void java_lang_ClassFrameInfo::compute_offsets() {
3210 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3211 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3212 }
3213
3214 #if INCLUDE_CDS
3215 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3216 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3217 }
3218 #endif
3219
3220 static int get_flags(const methodHandle& m) {
3221 int flags = m->access_flags().as_method_flags();
3222 if (m->is_object_constructor()) {
3223 flags |= java_lang_invoke_MemberName::MN_IS_OBJECT_CONSTRUCTOR;
3224 } else {
3225 // Note: Static initializers can be here. Record them as plain methods.
3226 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3227 }
3228 if (m->caller_sensitive()) {
3229 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3230 }
3231 if (m->is_hidden()) {
3232 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3233 }
3234 assert((flags & 0xFF000000) == 0, "unexpected flags");
3235 return flags;
3236 }
3237
3238 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3239 return obj->obj_field(_classOrMemberName_offset);
3240 }
3241
3242 int java_lang_ClassFrameInfo::flags(oop obj) {
3243 return obj->int_field(_flags_offset);
3594 constructor->int_field_put(_modifiers_offset, value);
3595 }
3596
3597 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3598 constructor->obj_field_put(_signature_offset, value);
3599 }
3600
3601 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3602 constructor->obj_field_put(_annotations_offset, value);
3603 }
3604
3605 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3606 method->obj_field_put(_parameter_annotations_offset, value);
3607 }
3608
3609 int java_lang_reflect_Field::_clazz_offset;
3610 int java_lang_reflect_Field::_name_offset;
3611 int java_lang_reflect_Field::_type_offset;
3612 int java_lang_reflect_Field::_slot_offset;
3613 int java_lang_reflect_Field::_modifiers_offset;
3614 int java_lang_reflect_Field::_flags_offset;
3615 int java_lang_reflect_Field::_signature_offset;
3616 int java_lang_reflect_Field::_annotations_offset;
3617
3618 #define FIELD_FIELDS_DO(macro) \
3619 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3620 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3621 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3622 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3623 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3624 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3625 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3626 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3627
3628 void java_lang_reflect_Field::compute_offsets() {
3629 InstanceKlass* k = vmClasses::reflect_Field_klass();
3630 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3631 }
3632
3633 #if INCLUDE_CDS
3634 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3635 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3636 }
3637 #endif
3638
3639 Handle java_lang_reflect_Field::create(TRAPS) {
3640 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3641 Symbol* name = vmSymbols::java_lang_reflect_Field();
3642 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3643 InstanceKlass* ik = InstanceKlass::cast(k);
3644 // Ensure it is initialized
3669 void java_lang_reflect_Field::set_type(oop field, oop value) {
3670 field->obj_field_put(_type_offset, value);
3671 }
3672
3673 int java_lang_reflect_Field::slot(oop reflect) {
3674 return reflect->int_field(_slot_offset);
3675 }
3676
3677 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3678 reflect->int_field_put(_slot_offset, value);
3679 }
3680
3681 int java_lang_reflect_Field::modifiers(oop field) {
3682 return field->int_field(_modifiers_offset);
3683 }
3684
3685 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3686 field->int_field_put(_modifiers_offset, value);
3687 }
3688
3689 void java_lang_reflect_Field::set_flags(oop field, int value) {
3690 field->int_field_put(_flags_offset, value);
3691 }
3692
3693 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3694 field->obj_field_put(_signature_offset, value);
3695 }
3696
3697 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3698 field->obj_field_put(_annotations_offset, value);
3699 }
3700
3701 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3702 // Allocate java.lang.reflect.RecordComponent instance
3703 HandleMark hm(THREAD);
3704 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3705 assert(ik != nullptr, "must be loaded");
3706 ik->initialize(CHECK_NULL);
3707
3708 Handle element = ik->allocate_instance_handle(CHECK_NULL);
3709
3710 Handle decl_class(THREAD, holder->java_mirror());
3970 }
3971 #endif
3972
3973 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3974 assert(obj != nullptr, "sanity");
3975 if (offset != _referent_offset) {
3976 return false;
3977 }
3978
3979 Klass* k = obj->klass();
3980 if (!k->is_instance_klass()) {
3981 return false;
3982 }
3983
3984 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3985 bool is_reference = ik->reference_type() != REF_NONE;
3986 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3987 return is_reference;
3988 }
3989
3990 int* java_lang_boxing_object::_offsets;
3991
3992 #define BOXING_FIELDS_DO(macro) \
3993 macro(java_lang_boxing_object::_offsets[T_BOOLEAN - T_BOOLEAN], vmClasses::Boolean_klass(), "value", bool_signature, false); \
3994 macro(java_lang_boxing_object::_offsets[T_CHAR - T_BOOLEAN], vmClasses::Character_klass(), "value", char_signature, false); \
3995 macro(java_lang_boxing_object::_offsets[T_FLOAT - T_BOOLEAN], vmClasses::Float_klass(), "value", float_signature, false); \
3996 macro(java_lang_boxing_object::_offsets[T_DOUBLE - T_BOOLEAN], vmClasses::Double_klass(), "value", double_signature, false); \
3997 macro(java_lang_boxing_object::_offsets[T_BYTE - T_BOOLEAN], vmClasses::Byte_klass(), "value", byte_signature, false); \
3998 macro(java_lang_boxing_object::_offsets[T_SHORT - T_BOOLEAN], vmClasses::Short_klass(), "value", short_signature, false); \
3999 macro(java_lang_boxing_object::_offsets[T_INT - T_BOOLEAN], vmClasses::Integer_klass(), "value", int_signature, false); \
4000 macro(java_lang_boxing_object::_offsets[T_LONG - T_BOOLEAN], vmClasses::Long_klass(), "value", long_signature, false);
4001
4002 void java_lang_boxing_object::compute_offsets() {
4003 assert(T_LONG - T_BOOLEAN == 7, "Sanity check");
4004 java_lang_boxing_object::_offsets = NEW_C_HEAP_ARRAY(int, 8, mtInternal);
4005 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4006 }
4007
4008 #if INCLUDE_CDS
4009 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
4010 if (f->reading()) {
4011 assert(T_LONG - T_BOOLEAN == 7, "Sanity check");
4012 java_lang_boxing_object::_offsets = NEW_C_HEAP_ARRAY(int, 8, mtInternal);
4013 }
4014 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4015 }
4016 #endif
4017
4018 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
4019 Klass* k = vmClasses::box_klass(type);
4020 if (k == nullptr) return nullptr;
4021 InstanceKlass* ik = InstanceKlass::cast(k);
4022 if (!ik->is_initialized()) {
4023 ik->initialize(CHECK_NULL);
4024 }
4025 return ik->allocate_instance(THREAD);
4026 }
4027
4028
4029 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
4030 oop box = initialize_and_allocate(type, CHECK_NULL);
4031 if (box == nullptr) return nullptr;
4032 switch (type) {
4033 case T_BOOLEAN:
4034 box->bool_field_put(value_offset(type), value->z);
4035 break;
4036 case T_CHAR:
4037 box->char_field_put(value_offset(type), value->c);
4038 break;
4039 case T_FLOAT:
4040 box->float_field_put(value_offset(type), value->f);
4041 break;
4042 case T_DOUBLE:
4043 box->double_field_put(value_offset(type), value->d);
4044 break;
4045 case T_BYTE:
4046 box->byte_field_put(value_offset(type), value->b);
4047 break;
4048 case T_SHORT:
4049 box->short_field_put(value_offset(type), value->s);
4050 break;
4051 case T_INT:
4052 box->int_field_put(value_offset(type), value->i);
4053 break;
4054 case T_LONG:
4055 box->long_field_put(value_offset(type), value->j);
4056 break;
4057 default:
4058 return nullptr;
4059 }
4060 return box;
4061 }
4062
4063
4064 BasicType java_lang_boxing_object::basic_type(oop box) {
4065 if (box == nullptr) return T_ILLEGAL;
4066 BasicType type = vmClasses::box_klass_type(box->klass());
4067 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
4068 return T_ILLEGAL;
4069 return type;
4070 }
4071
4072
4073 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
4074 BasicType type = vmClasses::box_klass_type(box->klass());
4075 switch (type) {
4076 case T_BOOLEAN:
4077 value->z = box->bool_field(value_offset(type));
4078 break;
4079 case T_CHAR:
4080 value->c = box->char_field(value_offset(type));
4081 break;
4082 case T_FLOAT:
4083 value->f = box->float_field(value_offset(type));
4084 break;
4085 case T_DOUBLE:
4086 value->d = box->double_field(value_offset(type));
4087 break;
4088 case T_BYTE:
4089 value->b = box->byte_field(value_offset(type));
4090 break;
4091 case T_SHORT:
4092 value->s = box->short_field(value_offset(type));
4093 break;
4094 case T_INT:
4095 value->i = box->int_field(value_offset(type));
4096 break;
4097 case T_LONG:
4098 value->j = box->long_field(value_offset(type));
4099 break;
4100 default:
4101 return T_ILLEGAL;
4102 } // end switch
4103 return type;
4104 }
4105
4106
4107 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
4108 BasicType type = vmClasses::box_klass_type(box->klass());
4109 switch (type) {
4110 case T_BOOLEAN:
4111 box->bool_field_put(value_offset(type), value->z);
4112 break;
4113 case T_CHAR:
4114 box->char_field_put(value_offset(type), value->c);
4115 break;
4116 case T_FLOAT:
4117 box->float_field_put(value_offset(type), value->f);
4118 break;
4119 case T_DOUBLE:
4120 box->double_field_put(value_offset(type), value->d);
4121 break;
4122 case T_BYTE:
4123 box->byte_field_put(value_offset(type), value->b);
4124 break;
4125 case T_SHORT:
4126 box->short_field_put(value_offset(type), value->s);
4127 break;
4128 case T_INT:
4129 box->int_field_put(value_offset(type), value->i);
4130 break;
4131 case T_LONG:
4132 box->long_field_put(value_offset(type), value->j);
4133 break;
4134 default:
4135 return T_ILLEGAL;
4136 } // end switch
4137 return type;
4138 }
4139
4140
4141 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
4142 switch (type) {
4143 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
4144 case T_CHAR: st->print("%d", value->c); break;
4145 case T_BYTE: st->print("%d", value->b); break;
4146 case T_SHORT: st->print("%d", value->s); break;
4147 case T_INT: st->print("%d", value->i); break;
4148 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
4149 case T_FLOAT: st->print("%f", value->f); break;
4150 case T_DOUBLE: st->print("%lf", value->d); break;
4151 default: st->print("type %d?", type); break;
4152 }
4340 #define ABIDescriptor_FIELDS_DO(macro) \
4341 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4342 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4343 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4344 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4345 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4346 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4347 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4348
4349 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4350 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4351 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4352 }
4353
4354 #if INCLUDE_CDS
4355 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4356 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4357 }
4358 #endif
4359
4360 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4361 return oop_cast<refArrayOop>(entry->obj_field(_inputStorage_offset));
4362 }
4363
4364 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4365 return oop_cast<refArrayOop>(entry->obj_field(_outputStorage_offset));
4366 }
4367
4368 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4369 return oop_cast<refArrayOop>(entry->obj_field(_volatileStorage_offset));
4370 }
4371
4372 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4373 return entry->int_field(_stackAlignment_offset);
4374 }
4375
4376 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4377 return entry->int_field(_shadowSpace_offset);
4378 }
4379
4380 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4381 return entry->obj_field(_scratch1_offset);
4382 }
4383
4384 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4385 return entry->obj_field(_scratch2_offset);
4386 }
4387
4388 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4389 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4432
4433 #define CallConv_FIELDS_DO(macro) \
4434 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4435 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4436
4437 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4438 return obj != nullptr && is_subclass(obj->klass());
4439 }
4440
4441 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4442 InstanceKlass* k = vmClasses::CallConv_klass();
4443 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4444 }
4445
4446 #if INCLUDE_CDS
4447 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4448 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4449 }
4450 #endif
4451
4452 refArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4453 return oop_cast<refArrayOop>(entry->obj_field(_argRegs_offset));
4454 }
4455
4456 refArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4457 return oop_cast<refArrayOop>(entry->obj_field(_retRegs_offset));
4458 }
4459
4460 oop java_lang_invoke_MethodHandle::type(oop mh) {
4461 return mh->obj_field(_type_offset);
4462 }
4463
4464 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4465 mh->obj_field_put(_type_offset, mtype);
4466 }
4467
4468 oop java_lang_invoke_MethodHandle::form(oop mh) {
4469 assert(_form_offset != 0, "");
4470 return mh->obj_field(_form_offset);
4471 }
4472
4473 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4474 assert(_form_offset != 0, "");
4475 mh->obj_field_put(_form_offset, lform);
4476 }
4477
4500 oop java_lang_invoke_MemberName::type(oop mname) {
4501 assert(is_instance(mname), "wrong type");
4502 return mname->obj_field(_type_offset);
4503 }
4504
4505 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4506 assert(is_instance(mname), "wrong type");
4507 mname->obj_field_put(_type_offset, type);
4508 }
4509
4510 int java_lang_invoke_MemberName::flags(oop mname) {
4511 assert(is_instance(mname), "wrong type");
4512 return mname->int_field(_flags_offset);
4513 }
4514
4515 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4516 assert(is_instance(mname), "wrong type");
4517 mname->int_field_put(_flags_offset, flags);
4518 }
4519
4520 // Return vmtarget from ResolvedMethodName method field through indirection
4521 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4522 assert(is_instance(mname), "wrong type");
4523 oop method = mname->obj_field(_method_offset);
4524 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4525 }
4526
4527 bool java_lang_invoke_MemberName::is_method(oop mname) {
4528 assert(is_instance(mname), "must be MemberName");
4529 return (flags(mname) & (MN_IS_METHOD | MN_IS_OBJECT_CONSTRUCTOR)) > 0;
4530 }
4531
4532 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4533 assert(is_instance(mname), "wrong type");
4534 mname->obj_field_put(_method_offset, resolved_method);
4535 }
4536
4537 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4538 assert(is_instance(mname), "wrong type");
4539 return (intptr_t) mname->address_field(_vmindex_offset);
4540 }
4541
4542 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4543 assert(is_instance(mname), "wrong type");
4544 mname->address_field_put(_vmindex_offset, (address) index);
4545 }
4546
4547
4548 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4549 assert(is_instance(resolved_method), "wrong type");
4613 int java_lang_invoke_MethodType::_rtype_offset;
4614 int java_lang_invoke_MethodType::_ptypes_offset;
4615
4616 #define METHODTYPE_FIELDS_DO(macro) \
4617 macro(_rtype_offset, k, "rtype", class_signature, false); \
4618 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4619
4620 void java_lang_invoke_MethodType::compute_offsets() {
4621 InstanceKlass* k = vmClasses::MethodType_klass();
4622 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4623 }
4624
4625 #if INCLUDE_CDS
4626 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4627 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4628 }
4629 #endif
4630
4631 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4632 st->print("(");
4633 refArrayOop pts = ptypes(mt);
4634 if (pts != nullptr) {
4635 for (int i = 0, limit = pts->length(); i < limit; i++) {
4636 java_lang_Class::print_signature(pts->obj_at(i), st);
4637 }
4638 } else {
4639 st->print("null");
4640 }
4641 st->print(")");
4642 oop rt = rtype(mt);
4643 if (rt != nullptr) {
4644 java_lang_Class::print_signature(rt, st);
4645 } else {
4646 st->print("null");
4647 }
4648 }
4649
4650 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4651 ResourceMark rm;
4652 stringStream buffer(128);
4653 print_signature(mt, &buffer);
4664
4665 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4666 if (mt1 == mt2)
4667 return true;
4668 if (rtype(mt1) != rtype(mt2))
4669 return false;
4670 if (ptype_count(mt1) != ptype_count(mt2))
4671 return false;
4672 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4673 if (ptype(mt1, i) != ptype(mt2, i))
4674 return false;
4675 }
4676 return true;
4677 }
4678
4679 oop java_lang_invoke_MethodType::rtype(oop mt) {
4680 assert(is_instance(mt), "must be a MethodType");
4681 return mt->obj_field(_rtype_offset);
4682 }
4683
4684 refArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4685 assert(is_instance(mt), "must be a MethodType");
4686 return (refArrayOop) mt->obj_field(_ptypes_offset);
4687 }
4688
4689 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4690 return ptypes(mt)->obj_at(idx);
4691 }
4692
4693 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4694 return ptypes(mt)->length();
4695 }
4696
4697 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4698 refArrayOop pts = ptypes(mt);
4699 int count = pts->length();
4700 int slots = 0;
4701 for (int i = 0; i < count; i++) {
4702 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4703 slots += type2size[bt];
4704 }
4705 return slots;
4706 }
4707
4708 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4709 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4710 return type2size[bt];
4711 }
4712
4713
4714 // Support for java_lang_invoke_CallSite
4715
4716 int java_lang_invoke_CallSite::_target_offset;
4717 int java_lang_invoke_CallSite::_vmdependencies_offset;
4718 int java_lang_invoke_CallSite::_last_cleanup_offset;
5103 }
5104
5105 bool vector_VectorPayload::is_instance(oop obj) {
5106 return obj != nullptr && is_subclass(obj->klass());
5107 }
5108
5109 int java_lang_Integer_IntegerCache::_static_cache_offset;
5110 int java_lang_Long_LongCache::_static_cache_offset;
5111 int java_lang_Character_CharacterCache::_static_cache_offset;
5112 int java_lang_Short_ShortCache::_static_cache_offset;
5113 int java_lang_Byte_ByteCache::_static_cache_offset;
5114
5115 #define INTEGER_CACHE_FIELDS_DO(macro) \
5116 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5117
5118 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5119 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5120 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5121 }
5122
5123 refArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5124 oop base = ik->static_field_base_raw();
5125 return refArrayOop(base->obj_field(_static_cache_offset));
5126 }
5127
5128 Symbol* java_lang_Integer_IntegerCache::symbol() {
5129 return vmSymbols::java_lang_Integer_IntegerCache();
5130 }
5131
5132 #if INCLUDE_CDS
5133 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5134 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5135 }
5136 #endif
5137 #undef INTEGER_CACHE_FIELDS_DO
5138
5139 jint java_lang_Integer::value(oop obj) {
5140 jvalue v;
5141 java_lang_boxing_object::get_value(obj, &v);
5142 return v.i;
5143 }
5144
5145 #define LONG_CACHE_FIELDS_DO(macro) \
5146 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5147
5148 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5149 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5150 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5151 }
5152
5153 refArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5154 oop base = ik->static_field_base_raw();
5155 return refArrayOop(base->obj_field(_static_cache_offset));
5156 }
5157
5158 Symbol* java_lang_Long_LongCache::symbol() {
5159 return vmSymbols::java_lang_Long_LongCache();
5160 }
5161
5162 #if INCLUDE_CDS
5163 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5164 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5165 }
5166 #endif
5167 #undef LONG_CACHE_FIELDS_DO
5168
5169 jlong java_lang_Long::value(oop obj) {
5170 jvalue v;
5171 java_lang_boxing_object::get_value(obj, &v);
5172 return v.j;
5173 }
5174
5175 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5176 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5177
5178 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5179 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5180 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5181 }
5182
5183 refArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5184 oop base = ik->static_field_base_raw();
5185 return refArrayOop(base->obj_field(_static_cache_offset));
5186 }
5187
5188 Symbol* java_lang_Character_CharacterCache::symbol() {
5189 return vmSymbols::java_lang_Character_CharacterCache();
5190 }
5191
5192 #if INCLUDE_CDS
5193 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5194 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5195 }
5196 #endif
5197 #undef CHARACTER_CACHE_FIELDS_DO
5198
5199 jchar java_lang_Character::value(oop obj) {
5200 jvalue v;
5201 java_lang_boxing_object::get_value(obj, &v);
5202 return v.c;
5203 }
5204
5205 #define SHORT_CACHE_FIELDS_DO(macro) \
5206 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5207
5208 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5209 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5210 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5211 }
5212
5213 refArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5214 oop base = ik->static_field_base_raw();
5215 return refArrayOop(base->obj_field(_static_cache_offset));
5216 }
5217
5218 Symbol* java_lang_Short_ShortCache::symbol() {
5219 return vmSymbols::java_lang_Short_ShortCache();
5220 }
5221
5222 #if INCLUDE_CDS
5223 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5224 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5225 }
5226 #endif
5227 #undef SHORT_CACHE_FIELDS_DO
5228
5229 jshort java_lang_Short::value(oop obj) {
5230 jvalue v;
5231 java_lang_boxing_object::get_value(obj, &v);
5232 return v.s;
5233 }
5234
5235 #define BYTE_CACHE_FIELDS_DO(macro) \
5236 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5237
5238 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5239 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5240 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5241 }
5242
5243 refArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5244 oop base = ik->static_field_base_raw();
5245 return refArrayOop(base->obj_field(_static_cache_offset));
5246 }
5247
5248 Symbol* java_lang_Byte_ByteCache::symbol() {
5249 return vmSymbols::java_lang_Byte_ByteCache();
5250 }
5251
5252 #if INCLUDE_CDS
5253 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5254 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5255 }
5256 #endif
5257 #undef BYTE_CACHE_FIELDS_DO
5258
5259 jbyte java_lang_Byte::value(oop obj) {
5260 jvalue v;
5261 java_lang_boxing_object::get_value(obj, &v);
5262 return v.b;
5263 }
5264
5265 int java_lang_Boolean::_static_TRUE_offset;
5502 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5503 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5504 return false;
5505 }
5506 if (fd.is_static()) {
5507 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5508 return false;
5509 }
5510 if (fd.offset() == deserialized_offset ) {
5511 return true;
5512 } else {
5513 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5514 klass_name, field_name, deserialized_offset, fd.offset());
5515 return false;
5516 }
5517 }
5518
5519 void JavaClasses::check_offsets() {
5520 bool valid = true;
5521
5522 #define CHECK_OFFSET(klass_name, type, field_sig) \
5523 valid &= check_offset(klass_name, java_lang_boxing_object::value_offset(type), "value", field_sig)
5524
5525 CHECK_OFFSET("java/lang/Boolean", T_BOOLEAN, "Z");
5526 CHECK_OFFSET("java/lang/Character", T_CHAR, "C");
5527 CHECK_OFFSET("java/lang/Float", T_FLOAT, "F");
5528 CHECK_OFFSET("java/lang/Double", T_DOUBLE, "D");
5529 CHECK_OFFSET("java/lang/Byte", T_BYTE, "B");
5530 CHECK_OFFSET("java/lang/Short", T_SHORT, "S");
5531 CHECK_OFFSET("java/lang/Integer", T_INT, "I");
5532 CHECK_OFFSET("java/lang/Long", T_LONG, "J");
5533
5534 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5535 }
5536
5537 #endif // PRODUCT
5538
5539 int InjectedField::compute_offset() {
5540 InstanceKlass* ik = klass();
5541 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5542 if (!may_be_java && !fs.field_flags().is_injected()) {
5543 // Only look at injected fields
5544 continue;
5545 }
5546 if (fs.name() == name() && fs.signature() == signature()) {
5547 return fs.offset();
5548 }
5549 }
5550 ResourceMark rm;
5551 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)" : "");
5552 #ifndef PRODUCT
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