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"
1079 void java_lang_Class::allocate_mirror(Klass* k, bool is_scratch, Handle protection_domain, Handle classData,
1080 Handle& mirror, Handle& comp_mirror, TRAPS) {
1081 // Allocate mirror (java.lang.Class instance)
1082 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK);
1083 mirror = Handle(THREAD, mirror_oop);
1084
1085 // Setup indirection from mirror->klass
1086 set_klass(mirror(), k);
1087
1088 // Set the modifiers flag.
1089 u2 computed_modifiers = k->compute_modifier_flags();
1090 set_modifiers(mirror(), computed_modifiers);
1091
1092 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass());
1093 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set");
1094
1095 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror()));
1096
1097 // It might also have a component mirror. This mirror must already exist.
1098 if (k->is_array_klass()) {
1099 // The Java code for array classes gets the access flags from the element type.
1100 set_raw_access_flags(mirror(), 0);
1101 if (k->is_typeArray_klass()) {
1102 BasicType type = TypeArrayKlass::cast(k)->element_type();
1103 if (is_scratch) {
1104 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
1105 } else {
1106 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1107 }
1108 } else {
1109 assert(k->is_objArray_klass(), "Must be");
1110 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1111 assert(element_klass != nullptr, "Must have an element klass");
1112 if (is_scratch) {
1113 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1114 } else {
1115 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1116 }
1117 }
1118 assert(comp_mirror() != nullptr, "must have a mirror");
1119
1120 // Two-way link between the array klass and its component mirror:
1121 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1122 set_component_mirror(mirror(), comp_mirror());
1123 // See below for ordering dependencies between field array_klass in component mirror
1124 // and java_mirror in this klass.
1125 } else {
1126 assert(k->is_instance_klass(), "Must be");
1127 // Set the raw access_flags, this is used by reflection instead of modifier flags.
1128 set_raw_access_flags(mirror(), InstanceKlass::cast(k)->access_flags().as_unsigned_short());
1129 initialize_mirror_fields(InstanceKlass::cast(k), mirror, protection_domain, classData, THREAD);
1130 if (HAS_PENDING_EXCEPTION) {
1131 // If any of the fields throws an exception like OOM remove the klass field
1132 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1133 // This mirror looks like a primitive type, which logically it is because it
1134 // it represents no class.
1135 set_klass(mirror(), nullptr);
1136 return;
1137 }
1138 }
1139 }
1140
1141 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1142 Handle module, Handle protection_domain,
1143 Handle classData, TRAPS) {
1144 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1145 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1146
1147 // Class_klass has to be loaded because it is used to allocate
1148 // the mirror.
1149 if (vmClasses::Class_klass_is_loaded()) {
1150 Handle mirror;
1151 Handle comp_mirror;
1152
1153 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1154
1155 // set the classLoader field in the java_lang_Class instance
1156 assert(class_loader() == k->class_loader(), "should be same");
1157 set_class_loader(mirror(), class_loader());
1158
1159 // Setup indirection from klass->mirror
1160 // after any exceptions can happen during allocations.
1161 k->set_java_mirror(mirror);
1162
1163 // Set the module field in the java_lang_Class instance. This must be done
1164 // after the mirror is set.
1165 set_mirror_module_field(THREAD, k, mirror, module);
1166
1167 if (comp_mirror() != nullptr) {
1168 // Set after k->java_mirror() is published, because compiled code running
1169 // concurrently doesn't expect a k to have a null java_mirror.
1170 release_set_array_klass(comp_mirror(), k);
1171 }
1172 if (CDSConfig::is_dumping_heap()) {
1173 create_scratch_mirror(k, CHECK);
1174 }
1175 } else {
1176 assert(!CDSConfig::is_using_aot_linked_classes(), "should not come here");
1177 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1178 fixup_mirror_list()->push(k);
1179 }
1180 }
1181
1182 #if INCLUDE_CDS_JAVA_HEAP
1183 // The "scratch mirror" stores the states of the mirror object that can be
1184 // decided at dump time (such as the initial values of the static fields, the
1185 // component mirror, etc). At runtime, more information is added to it by
1186 // java_lang_Class::restore_archived_mirror().
1187 //
1188 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1189 // produces the same result as /*runtime*/create_mirror().
1190 //
1191 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1216 // shared klass' _has_raw_archived_mirror flag is cleared.
1217 bool java_lang_Class::restore_archived_mirror(Klass *k,
1218 Handle class_loader, Handle module,
1219 Handle protection_domain, TRAPS) {
1220 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1221 // see more details in vmClasses::resolve_all().
1222 if (!vmClasses::Class_klass_is_loaded() && !CDSConfig::is_using_aot_linked_classes()) {
1223 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1224 fixup_mirror_list()->push(k);
1225 return true;
1226 }
1227
1228 oop m = k->archived_java_mirror();
1229 assert(m != nullptr, "must have stored non-null archived mirror");
1230
1231 // Sanity: clear it now to prevent re-initialization if any of the following fails
1232 k->clear_archived_mirror_index();
1233
1234 // mirror is archived, restore
1235 log_debug(aot, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1236 assert(as_Klass(m) == k, "must be");
1237 Handle mirror(THREAD, m);
1238
1239 if (!k->is_array_klass()) {
1240 // - local static final fields with initial values were initialized at dump time
1241 assert(init_lock(mirror()) != nullptr, "allocated during AOT assembly");
1242
1243 if (protection_domain.not_null()) {
1244 set_protection_domain(mirror(), protection_domain());
1245 }
1246 }
1247
1248 assert(class_loader() == k->class_loader(), "should be same");
1249 if (class_loader.not_null()) {
1250 set_class_loader(mirror(), class_loader());
1251 }
1252
1253 k->set_java_mirror(mirror);
1254
1255 set_mirror_module_field(THREAD, k, mirror, module);
1256
1257 if (log_is_enabled(Trace, aot, heap, mirror)) {
1258 ResourceMark rm(THREAD);
1259 log_trace(aot, heap, mirror)(
1260 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1261 }
1262
1263 if (CDSConfig::is_dumping_heap()) {
1264 create_scratch_mirror(k, CHECK_(false));
1265 }
1266
1267 return true;
1268 }
1269 #endif // INCLUDE_CDS_JAVA_HEAP
1270
1271 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1272 assert(_module_offset != 0, "must have been computed already");
1273 set_module(k->java_mirror(), module());
1274 }
1275
1276 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1277 assert(_oop_size_offset != 0, "must be set");
1278 assert(size > 0, "Oop size must be greater than zero, not %zu", size);
1279 assert(size <= INT_MAX, "Lossy conversion: %zu", size);
1280 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1281 }
1282
1283 int java_lang_Class::static_oop_field_count(oop java_class) {
1362 java_class->obj_field_put(_name_offset, o);
1363 }
1364 return o;
1365 }
1366
1367 oop java_lang_Class::source_file(oop java_class) {
1368 assert(_source_file_offset != 0, "must be set");
1369 return java_class->obj_field(_source_file_offset);
1370 }
1371
1372 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1373 assert(_source_file_offset != 0, "must be set");
1374 java_class->obj_field_put(_source_file_offset, source_file);
1375 }
1376
1377 void java_lang_Class::set_is_primitive(oop java_class) {
1378 assert(_is_primitive_offset != 0, "must be set");
1379 java_class->bool_field_put(_is_primitive_offset, true);
1380 }
1381
1382
1383 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1384 // Mirrors for basic types have a null klass field, which makes them special.
1385 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, CHECK_NULL);
1386 if (type != T_VOID) {
1387 Klass* aklass = Universe::typeArrayKlass(type);
1388 assert(aklass != nullptr, "correct bootstrap");
1389 release_set_array_klass(java_class, aklass);
1390 }
1391 #ifdef ASSERT
1392 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1393 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1394 #endif
1395 set_modifiers(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1396 set_raw_access_flags(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1397
1398 set_is_primitive(java_class);
1399 return java_class;
1400 }
1401
1402 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1461 const char* name = nullptr;
1462 if (is_primitive(java_class)) {
1463 name = type2name(primitive_type(java_class));
1464 } else {
1465 name = as_Klass(java_class)->external_name();
1466 }
1467 if (name == nullptr) {
1468 name = "<null>";
1469 }
1470 return name;
1471 }
1472
1473 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1474 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1475 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1476 return k;
1477 }
1478
1479 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1480 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1481 java_class->release_metadata_field_put(_array_klass_offset, klass);
1482 }
1483
1484
1485 BasicType java_lang_Class::primitive_type(oop java_class) {
1486 assert(is_primitive(java_class), "just checking");
1487 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1488 BasicType type = T_VOID;
1489 if (ak != nullptr) {
1490 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1491 type = ArrayKlass::cast(ak)->element_type();
1492 } else {
1493 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1494 }
1495 #ifdef ASSERT
1496 if (CDSConfig::is_dumping_heap()) {
1497 oop mirror = Universe::java_mirror(type);
1498 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1499 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1500 } else {
1970 ResourceMark rm(THREAD);
1971 HandleMark hm(THREAD);
1972 GetStackTraceHandshakeClosure gsthc(Handle(THREAD, thread_oop));
1973 if (is_virtual) {
1974 Handshake::execute(&gsthc, thread_oop);
1975 } else {
1976 Handshake::execute(&gsthc, &tlh, java_thread);
1977 }
1978
1979 // Stop if no stack trace is found.
1980 if (gsthc._depth == 0) {
1981 return nullptr;
1982 }
1983
1984 // Convert to StackTraceElement array
1985 InstanceKlass* k = vmClasses::StackTraceElement_klass();
1986 assert(k != nullptr, "must be loaded in 1.4+");
1987 if (k->should_be_initialized()) {
1988 k->initialize(CHECK_NULL);
1989 }
1990 objArrayHandle trace = oopFactory::new_objArray_handle(k, gsthc._depth, CHECK_NULL);
1991
1992 for (int i = 0; i < gsthc._depth; i++) {
1993 methodHandle method(THREAD, gsthc._methods.at(i));
1994 oop element = java_lang_StackTraceElement::create(method,
1995 gsthc._bcis.at(i),
1996 CHECK_NULL);
1997 trace->obj_at_put(i, element);
1998 }
1999
2000 return trace();
2001 }
2002
2003 const char* java_lang_Thread::thread_status_name(oop java_thread) {
2004 JavaThreadStatus status = get_thread_status(java_thread);
2005 switch (status) {
2006 case JavaThreadStatus::NEW : return "NEW";
2007 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
2008 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
2009 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
2010 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
2261 macro(_cause_offset, k, "cause", throwable_signature, false); \
2262 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2263
2264 void java_lang_Throwable::compute_offsets() {
2265 InstanceKlass* k = vmClasses::Throwable_klass();
2266 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2267 }
2268
2269 #if INCLUDE_CDS
2270 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2271 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2272 }
2273 #endif
2274
2275 oop java_lang_Throwable::unassigned_stacktrace() {
2276 InstanceKlass* ik = vmClasses::Throwable_klass();
2277 oop base = ik->static_field_base_raw();
2278 return base->obj_field(_static_unassigned_stacktrace_offset);
2279 }
2280
2281 oop java_lang_Throwable::backtrace(oop throwable) {
2282 return throwable->obj_field_acquire(_backtrace_offset);
2283 }
2284
2285
2286 void java_lang_Throwable::set_backtrace(oop throwable, oop value) {
2287 throwable->release_obj_field_put(_backtrace_offset, value);
2288 }
2289
2290 int java_lang_Throwable::depth(oop throwable) {
2291 return throwable->int_field(_depth_offset);
2292 }
2293
2294 void java_lang_Throwable::set_depth(oop throwable, int value) {
2295 throwable->int_field_put(_depth_offset, value);
2296 }
2297
2298 oop java_lang_Throwable::message(oop throwable) {
2299 return throwable->obj_field(_detailMessage_offset);
2300 }
2301
2302 const char* java_lang_Throwable::message_as_utf8(oop throwable) {
2303 oop msg = java_lang_Throwable::message(throwable);
2304 const char* msg_utf8 = nullptr;
2305 if (msg != nullptr) {
2306 msg_utf8 = java_lang_String::as_utf8_string(msg);
2336 st->print(": %s", java_lang_String::as_utf8_string(msg));
2337 }
2338 }
2339
2340 // After this many redefines, the stack trace is unreliable.
2341 const int MAX_VERSION = USHRT_MAX;
2342
2343 static inline bool version_matches(Method* method, int version) {
2344 assert(version < MAX_VERSION, "version is too big");
2345 return method != nullptr && (method->constants()->version() == version);
2346 }
2347
2348 // This class provides a simple wrapper over the internal structure of
2349 // exception backtrace to insulate users of the backtrace from needing
2350 // to know what it looks like.
2351 // The code of this class is not GC safe. Allocations can only happen
2352 // in expand().
2353 class BacktraceBuilder: public StackObj {
2354 friend class BacktraceIterator;
2355 private:
2356 Handle _backtrace;
2357 objArrayOop _head;
2358 typeArrayOop _methods;
2359 typeArrayOop _bcis;
2360 objArrayOop _mirrors;
2361 typeArrayOop _names; // Needed to insulate method name against redefinition.
2362 // True if the top frame of the backtrace is omitted because it shall be hidden.
2363 bool _has_hidden_top_frame;
2364 int _index;
2365 NoSafepointVerifier _nsv;
2366
2367 enum {
2368 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2369 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2370 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2371 trace_names_offset = java_lang_Throwable::trace_names_offset,
2372 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2373 trace_next_offset = java_lang_Throwable::trace_next_offset,
2374 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2375 trace_size = java_lang_Throwable::trace_size,
2376 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2377 };
2378
2379 // get info out of chunks
2380 static typeArrayOop get_methods(objArrayHandle chunk) {
2381 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2382 assert(methods != nullptr, "method array should be initialized in backtrace");
2383 return methods;
2384 }
2385 static typeArrayOop get_bcis(objArrayHandle chunk) {
2386 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2387 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2388 return bcis;
2389 }
2390 static objArrayOop get_mirrors(objArrayHandle chunk) {
2391 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset));
2392 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2393 return mirrors;
2394 }
2395 static typeArrayOop get_names(objArrayHandle chunk) {
2396 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2397 assert(names != nullptr, "names array should be initialized in backtrace");
2398 return names;
2399 }
2400 static bool has_hidden_top_frame(objArrayHandle chunk) {
2401 oop hidden = chunk->obj_at(trace_hidden_offset);
2402 return hidden != nullptr;
2403 }
2404
2405 public:
2406
2407 // constructor for new backtrace
2408 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2409 expand(CHECK);
2410 _backtrace = Handle(THREAD, _head);
2411 _index = 0;
2412 }
2413
2414 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) {
2415 _methods = get_methods(backtrace);
2416 _bcis = get_bcis(backtrace);
2417 _mirrors = get_mirrors(backtrace);
2418 _names = get_names(backtrace);
2419 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2420 assert(_methods->length() == _bcis->length() &&
2421 _methods->length() == _mirrors->length() &&
2422 _mirrors->length() == _names->length(),
2423 "method and source information arrays should match");
2424
2425 // head is the preallocated backtrace
2426 _head = backtrace();
2427 _backtrace = Handle(thread, _head);
2428 _index = 0;
2429 }
2430
2431 void expand(TRAPS) {
2432 objArrayHandle old_head(THREAD, _head);
2433 PauseNoSafepointVerifier pnsv(&_nsv);
2434
2435 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2436 objArrayHandle new_head(THREAD, head);
2437
2438 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2439 typeArrayHandle new_methods(THREAD, methods);
2440
2441 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2442 typeArrayHandle new_bcis(THREAD, bcis);
2443
2444 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2445 objArrayHandle new_mirrors(THREAD, mirrors);
2446
2447 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2448 typeArrayHandle new_names(THREAD, names);
2449
2450 if (!old_head.is_null()) {
2451 old_head->obj_at_put(trace_next_offset, new_head());
2452 }
2453 new_head->obj_at_put(trace_methods_offset, new_methods());
2454 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2455 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2456 new_head->obj_at_put(trace_names_offset, new_names());
2457 new_head->obj_at_put(trace_hidden_offset, nullptr);
2458
2459 _head = new_head();
2460 _methods = new_methods();
2461 _bcis = new_bcis();
2462 _mirrors = new_mirrors();
2463 _names = new_names();
2464 _index = 0;
2465 }
2466
2467 oop backtrace() {
2468 return _backtrace();
2469 }
2470
2471 inline void push(Method* method, int bci, TRAPS) {
2472 // Smear the -1 bci to 0 since the array only holds unsigned
2473 // shorts. The later line number lookup would just smear the -1
2474 // to a 0 even if it could be recorded.
2475 if (bci == SynchronizationEntryBCI) bci = 0;
2476
2477 if (_index >= trace_chunk_size) {
2478 methodHandle mhandle(THREAD, method);
2479 expand(CHECK);
2480 method = mhandle();
2481 }
2482
2483 _methods->ushort_at_put(_index, method->orig_method_idnum());
2484 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2485
2486 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2487 // klass owning the symbols alive so their refcounts aren't decremented.
2505 // available right here. _methods is a short[].
2506 assert(_methods != nullptr, "we need a legal oop");
2507 _has_hidden_top_frame = true;
2508 _head->obj_at_put(trace_hidden_offset, _methods);
2509 }
2510 }
2511 };
2512
2513 struct BacktraceElement : public StackObj {
2514 int _method_id;
2515 int _bci;
2516 int _version;
2517 Symbol* _name;
2518 Handle _mirror;
2519 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2520 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2521 };
2522
2523 class BacktraceIterator : public StackObj {
2524 int _index;
2525 objArrayHandle _result;
2526 objArrayHandle _mirrors;
2527 typeArrayHandle _methods;
2528 typeArrayHandle _bcis;
2529 typeArrayHandle _names;
2530
2531 void init(objArrayHandle result, Thread* thread) {
2532 // Get method id, bci, version and mirror from chunk
2533 _result = result;
2534 if (_result.not_null()) {
2535 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2536 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2537 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2538 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2539 _index = 0;
2540 }
2541 }
2542 public:
2543 BacktraceIterator(objArrayHandle result, Thread* thread) {
2544 init(result, thread);
2545 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2546 }
2547
2548 BacktraceElement next(Thread* thread) {
2549 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2550 _methods->ushort_at(_index),
2551 Backtrace::version_at(_bcis->int_at(_index)),
2552 Backtrace::bci_at(_bcis->int_at(_index)),
2553 _names->symbol_at(_index));
2554 _index++;
2555
2556 if (_index >= java_lang_Throwable::trace_chunk_size) {
2557 int next_offset = java_lang_Throwable::trace_next_offset;
2558 // Get next chunk
2559 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset)));
2560 init(result, thread);
2561 }
2562 return e;
2563 }
2564
2565 bool repeat() {
2566 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2567 }
2568 };
2569
2570
2571 // Print stack trace element to the specified output stream.
2572 // The output is formatted into a stringStream and written to the outputStream in one step.
2573 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2574 int version, int bci, Symbol* name) {
2575 ResourceMark rm;
2576 stringStream ss;
2577
2578 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(mirror());
2579 const char* klass_name = holder->external_name();
2630
2631 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2632 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2633 int method_id = method->orig_method_idnum();
2634 int version = method->constants()->version();
2635 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2636 }
2637
2638 /**
2639 * Print the throwable message and its stack trace plus all causes by walking the
2640 * cause chain. The output looks the same as of Throwable.printStackTrace().
2641 */
2642 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2643 // First, print the message.
2644 print(throwable(), st);
2645 st->cr();
2646
2647 // Now print the stack trace.
2648 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2649 while (throwable.not_null()) {
2650 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable())));
2651 if (result.is_null()) {
2652 st->print_raw_cr("\t<<no stack trace available>>");
2653 return;
2654 }
2655 BacktraceIterator iter(result, THREAD);
2656
2657 while (iter.repeat()) {
2658 BacktraceElement bte = iter.next(THREAD);
2659 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2660 }
2661 if (THREAD->can_call_java()) {
2662 // Call getCause() which doesn't necessarily return the _cause field.
2663 ExceptionMark em(THREAD);
2664 JavaValue cause(T_OBJECT);
2665 JavaCalls::call_virtual(&cause,
2666 throwable,
2667 throwable->klass(),
2668 vmSymbols::getCause_name(),
2669 vmSymbols::void_throwable_signature(),
2670 THREAD);
2814
2815 // the format of the stacktrace will be:
2816 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2817 // - 0 or more <init> methods for the exception class (skipped)
2818 // - rest of the stack
2819
2820 if (!skip_fillInStackTrace_check) {
2821 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2822 throwable->is_a(method->method_holder())) {
2823 continue;
2824 }
2825 else {
2826 skip_fillInStackTrace_check = true; // gone past them all
2827 }
2828 }
2829 if (!skip_throwableInit_check) {
2830 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2831
2832 // skip <init> methods of the exception class and superclasses
2833 // This is similar to classic VM.
2834 if (method->name() == vmSymbols::object_initializer_name() &&
2835 throwable->is_a(method->method_holder())) {
2836 continue;
2837 } else {
2838 // there are none or we've seen them all - either way stop checking
2839 skip_throwableInit_check = true;
2840 }
2841 }
2842 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2843 if (skip_hidden) {
2844 if (total_count == 0) {
2845 // The top frame will be hidden from the stack trace.
2846 bt.set_has_hidden_top_frame();
2847 }
2848 continue;
2849 }
2850 }
2851
2852 bt.push(method, bci, CHECK);
2853 total_count++;
2854 }
2883 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2884 // Allocate stack trace - backtrace is created but not filled in
2885
2886 // No-op if stack trace is disabled
2887 if (!StackTraceInThrowable) return;
2888 BacktraceBuilder bt(CHECK); // creates a backtrace
2889 set_backtrace(throwable(), bt.backtrace());
2890 }
2891
2892
2893 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2894 // Fill in stack trace into preallocated backtrace (no GC)
2895
2896 // No-op if stack trace is disabled
2897 if (!StackTraceInThrowable) return;
2898
2899 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2900
2901 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2902
2903 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable()));
2904 assert(backtrace.not_null(), "backtrace should have been preallocated");
2905
2906 ResourceMark rm(THREAD);
2907 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2908
2909 BacktraceBuilder bt(THREAD, backtrace);
2910
2911 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2912 // methods as preallocated errors aren't created by "java" code.
2913
2914 // fill in as much stack trace as possible
2915 int chunk_count = 0;
2916 for (;!st.at_end(); st.next()) {
2917 bt.push(st.method(), st.bci(), CHECK);
2918 chunk_count++;
2919
2920 // Bail-out for deep stacks
2921 if (chunk_count >= trace_chunk_size) break;
2922 }
2923 set_depth(throwable(), chunk_count);
2924 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2925
2926 // We support the Throwable immutability protocol defined for Java 7.
2927 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2928 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2929 }
2930
2931 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2932 objArrayHandle stack_trace_array_h, TRAPS) {
2933
2934 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2935 THROW(vmSymbols::java_lang_NullPointerException());
2936 }
2937
2938 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent");
2939
2940 if (stack_trace_array_h->length() != depth) {
2941 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2942 }
2943
2944 objArrayHandle result(THREAD, objArrayOop(backtrace()));
2945 BacktraceIterator iter(result, THREAD);
2946
2947 int index = 0;
2948 while (iter.repeat()) {
2949 BacktraceElement bte = iter.next(THREAD);
2950
2951 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2952
2953 if (stack_trace_element.is_null()) {
2954 THROW(vmSymbols::java_lang_NullPointerException());
2955 }
2956
2957 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
2958 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2959
2960 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2961 method,
2962 bte._version,
2963 bte._bci,
2964 bte._name,
3008 vmSymbols::getStackTrace_name(),
3009 vmSymbols::getStackTrace_signature(),
3010 current);
3011 if (!current->has_pending_exception()){
3012 Handle stack_trace(current, result.get_oop());
3013 assert(stack_trace->is_objArray(), "Should be an array");
3014 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
3015 // Clear backtrace because the stacktrace should be used instead.
3016 set_backtrace(init_error(), nullptr);
3017 } else {
3018 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
3019 init_error->klass()->external_name());
3020 current->clear_pending_exception();
3021 }
3022
3023 return init_error;
3024 }
3025
3026 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
3027 JavaThread* current = JavaThread::current();
3028 objArrayHandle result(current, objArrayOop(backtrace(throwable)));
3029 BacktraceIterator iter(result, current);
3030 // No backtrace available.
3031 if (!iter.repeat()) return false;
3032
3033 // If the exception happened in a frame that has been hidden, i.e.,
3034 // omitted from the back trace, we can not compute the message.
3035 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
3036 if (hidden != nullptr) {
3037 return false;
3038 }
3039
3040 // Get first backtrace element.
3041 BacktraceElement bte = iter.next(current);
3042
3043 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
3044 assert(holder != nullptr, "first element should be non-null");
3045 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
3046
3047 // Original version is no longer available.
3048 if (m == nullptr || !version_matches(m, bte._version)) {
3049 return false;
3050 }
3051
3052 *method = m;
3053 *bci = bte._bci;
3054 return true;
3055 }
3156 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
3157 int java_lang_ClassFrameInfo::_flags_offset;
3158
3159 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
3160 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3161 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3162
3163 void java_lang_ClassFrameInfo::compute_offsets() {
3164 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3165 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3166 }
3167
3168 #if INCLUDE_CDS
3169 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3170 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3171 }
3172 #endif
3173
3174 static int get_flags(const methodHandle& m) {
3175 int flags = m->access_flags().as_method_flags();
3176 if (m->is_object_initializer()) {
3177 flags |= java_lang_invoke_MemberName::MN_IS_CONSTRUCTOR;
3178 } else {
3179 // Note: Static initializers can be here. Record them as plain methods.
3180 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3181 }
3182 if (m->caller_sensitive()) {
3183 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3184 }
3185 if (m->is_hidden()) {
3186 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3187 }
3188 assert((flags & 0xFF000000) == 0, "unexpected flags");
3189 return flags;
3190 }
3191
3192 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3193 return obj->obj_field(_classOrMemberName_offset);
3194 }
3195
3196 int java_lang_ClassFrameInfo::flags(oop obj) {
3197 return obj->int_field(_flags_offset);
3548 constructor->int_field_put(_modifiers_offset, value);
3549 }
3550
3551 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3552 constructor->obj_field_put(_signature_offset, value);
3553 }
3554
3555 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3556 constructor->obj_field_put(_annotations_offset, value);
3557 }
3558
3559 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3560 method->obj_field_put(_parameter_annotations_offset, value);
3561 }
3562
3563 int java_lang_reflect_Field::_clazz_offset;
3564 int java_lang_reflect_Field::_name_offset;
3565 int java_lang_reflect_Field::_type_offset;
3566 int java_lang_reflect_Field::_slot_offset;
3567 int java_lang_reflect_Field::_modifiers_offset;
3568 int java_lang_reflect_Field::_trusted_final_offset;
3569 int java_lang_reflect_Field::_signature_offset;
3570 int java_lang_reflect_Field::_annotations_offset;
3571 JFR_ONLY(int java_lang_reflect_Field::_jfr_epoch_offset;)
3572
3573 #define FIELD_FIELDS_DO(macro) \
3574 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3575 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3576 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3577 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3578 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3579 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \
3580 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3581 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3582
3583 void java_lang_reflect_Field::compute_offsets() {
3584 InstanceKlass* k = vmClasses::reflect_Field_klass();
3585 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3586 JFR_ONLY(FIELD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);)
3587 }
3588
3589 #if INCLUDE_CDS
3590 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) {
3591 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3592 JFR_ONLY(FIELD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);)
3593 }
3594 #endif
3595
3596 Handle java_lang_reflect_Field::create(TRAPS) {
3597 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3598 Symbol* name = vmSymbols::java_lang_reflect_Field();
3599 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3626 void java_lang_reflect_Field::set_type(oop field, oop value) {
3627 field->obj_field_put(_type_offset, value);
3628 }
3629
3630 int java_lang_reflect_Field::slot(oop reflect) {
3631 return reflect->int_field(_slot_offset);
3632 }
3633
3634 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3635 reflect->int_field_put(_slot_offset, value);
3636 }
3637
3638 int java_lang_reflect_Field::modifiers(oop field) {
3639 return field->int_field(_modifiers_offset);
3640 }
3641
3642 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3643 field->int_field_put(_modifiers_offset, value);
3644 }
3645
3646 void java_lang_reflect_Field::set_trusted_final(oop field) {
3647 field->bool_field_put(_trusted_final_offset, true);
3648 }
3649
3650 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3651 field->obj_field_put(_signature_offset, value);
3652 }
3653
3654 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3655 field->obj_field_put(_annotations_offset, value);
3656 }
3657
3658 #if INCLUDE_JFR
3659 u2 java_lang_reflect_Field::epoch(oop ref) {
3660 return static_cast<u2>(ref->int_field(_jfr_epoch_offset));
3661 }
3662 #endif // INCLUDE_JFR
3663
3664 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3665 // Allocate java.lang.reflect.RecordComponent instance
3666 HandleMark hm(THREAD);
3667 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3933 }
3934 #endif
3935
3936 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3937 assert(obj != nullptr, "sanity");
3938 if (offset != _referent_offset) {
3939 return false;
3940 }
3941
3942 Klass* k = obj->klass();
3943 if (!k->is_instance_klass()) {
3944 return false;
3945 }
3946
3947 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3948 bool is_reference = ik->reference_type() != REF_NONE;
3949 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3950 return is_reference;
3951 }
3952
3953 int java_lang_boxing_object::_value_offset;
3954 int java_lang_boxing_object::_long_value_offset;
3955
3956 #define BOXING_FIELDS_DO(macro) \
3957 macro(_value_offset, integerKlass, "value", int_signature, false); \
3958 macro(_long_value_offset, longKlass, "value", long_signature, false);
3959
3960 void java_lang_boxing_object::compute_offsets() {
3961 InstanceKlass* integerKlass = vmClasses::Integer_klass();
3962 InstanceKlass* longKlass = vmClasses::Long_klass();
3963 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3964 }
3965
3966 #if INCLUDE_CDS
3967 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3968 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3969 }
3970 #endif
3971
3972 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
3973 Klass* k = vmClasses::box_klass(type);
3974 if (k == nullptr) return nullptr;
3975 InstanceKlass* ik = InstanceKlass::cast(k);
3976 if (!ik->is_initialized()) {
3977 ik->initialize(CHECK_NULL);
3978 }
3979 return ik->allocate_instance(THREAD);
3980 }
3981
3982
3983 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
3984 oop box = initialize_and_allocate(type, CHECK_NULL);
3985 if (box == nullptr) return nullptr;
3986 switch (type) {
3987 case T_BOOLEAN:
3988 box->bool_field_put(_value_offset, value->z);
3989 break;
3990 case T_CHAR:
3991 box->char_field_put(_value_offset, value->c);
3992 break;
3993 case T_FLOAT:
3994 box->float_field_put(_value_offset, value->f);
3995 break;
3996 case T_DOUBLE:
3997 box->double_field_put(_long_value_offset, value->d);
3998 break;
3999 case T_BYTE:
4000 box->byte_field_put(_value_offset, value->b);
4001 break;
4002 case T_SHORT:
4003 box->short_field_put(_value_offset, value->s);
4004 break;
4005 case T_INT:
4006 box->int_field_put(_value_offset, value->i);
4007 break;
4008 case T_LONG:
4009 box->long_field_put(_long_value_offset, value->j);
4010 break;
4011 default:
4012 return nullptr;
4013 }
4014 return box;
4015 }
4016
4017
4018 BasicType java_lang_boxing_object::basic_type(oop box) {
4019 if (box == nullptr) return T_ILLEGAL;
4020 BasicType type = vmClasses::box_klass_type(box->klass());
4021 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
4022 return T_ILLEGAL;
4023 return type;
4024 }
4025
4026
4027 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
4028 BasicType type = vmClasses::box_klass_type(box->klass());
4029 switch (type) {
4030 case T_BOOLEAN:
4031 value->z = box->bool_field(_value_offset);
4032 break;
4033 case T_CHAR:
4034 value->c = box->char_field(_value_offset);
4035 break;
4036 case T_FLOAT:
4037 value->f = box->float_field(_value_offset);
4038 break;
4039 case T_DOUBLE:
4040 value->d = box->double_field(_long_value_offset);
4041 break;
4042 case T_BYTE:
4043 value->b = box->byte_field(_value_offset);
4044 break;
4045 case T_SHORT:
4046 value->s = box->short_field(_value_offset);
4047 break;
4048 case T_INT:
4049 value->i = box->int_field(_value_offset);
4050 break;
4051 case T_LONG:
4052 value->j = box->long_field(_long_value_offset);
4053 break;
4054 default:
4055 return T_ILLEGAL;
4056 } // end switch
4057 return type;
4058 }
4059
4060
4061 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
4062 BasicType type = vmClasses::box_klass_type(box->klass());
4063 switch (type) {
4064 case T_BOOLEAN:
4065 box->bool_field_put(_value_offset, value->z);
4066 break;
4067 case T_CHAR:
4068 box->char_field_put(_value_offset, value->c);
4069 break;
4070 case T_FLOAT:
4071 box->float_field_put(_value_offset, value->f);
4072 break;
4073 case T_DOUBLE:
4074 box->double_field_put(_long_value_offset, value->d);
4075 break;
4076 case T_BYTE:
4077 box->byte_field_put(_value_offset, value->b);
4078 break;
4079 case T_SHORT:
4080 box->short_field_put(_value_offset, value->s);
4081 break;
4082 case T_INT:
4083 box->int_field_put(_value_offset, value->i);
4084 break;
4085 case T_LONG:
4086 box->long_field_put(_long_value_offset, value->j);
4087 break;
4088 default:
4089 return T_ILLEGAL;
4090 } // end switch
4091 return type;
4092 }
4093
4094
4095 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
4096 switch (type) {
4097 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
4098 case T_CHAR: st->print("%d", value->c); break;
4099 case T_BYTE: st->print("%d", value->b); break;
4100 case T_SHORT: st->print("%d", value->s); break;
4101 case T_INT: st->print("%d", value->i); break;
4102 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
4103 case T_FLOAT: st->print("%f", value->f); break;
4104 case T_DOUBLE: st->print("%lf", value->d); break;
4105 default: st->print("type %d?", type); break;
4106 }
4294 #define ABIDescriptor_FIELDS_DO(macro) \
4295 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4296 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4297 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4298 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4299 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4300 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4301 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4302
4303 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4304 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4305 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4306 }
4307
4308 #if INCLUDE_CDS
4309 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4310 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4311 }
4312 #endif
4313
4314 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4315 return oop_cast<objArrayOop>(entry->obj_field(_inputStorage_offset));
4316 }
4317
4318 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4319 return oop_cast<objArrayOop>(entry->obj_field(_outputStorage_offset));
4320 }
4321
4322 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4323 return oop_cast<objArrayOop>(entry->obj_field(_volatileStorage_offset));
4324 }
4325
4326 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4327 return entry->int_field(_stackAlignment_offset);
4328 }
4329
4330 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4331 return entry->int_field(_shadowSpace_offset);
4332 }
4333
4334 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4335 return entry->obj_field(_scratch1_offset);
4336 }
4337
4338 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4339 return entry->obj_field(_scratch2_offset);
4340 }
4341
4342 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4343 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4386
4387 #define CallConv_FIELDS_DO(macro) \
4388 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4389 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4390
4391 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4392 return obj != nullptr && is_subclass(obj->klass());
4393 }
4394
4395 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4396 InstanceKlass* k = vmClasses::CallConv_klass();
4397 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4398 }
4399
4400 #if INCLUDE_CDS
4401 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4402 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4403 }
4404 #endif
4405
4406 objArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4407 return oop_cast<objArrayOop>(entry->obj_field(_argRegs_offset));
4408 }
4409
4410 objArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4411 return oop_cast<objArrayOop>(entry->obj_field(_retRegs_offset));
4412 }
4413
4414 oop java_lang_invoke_MethodHandle::type(oop mh) {
4415 return mh->obj_field(_type_offset);
4416 }
4417
4418 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4419 mh->obj_field_put(_type_offset, mtype);
4420 }
4421
4422 oop java_lang_invoke_MethodHandle::form(oop mh) {
4423 assert(_form_offset != 0, "");
4424 return mh->obj_field(_form_offset);
4425 }
4426
4427 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4428 assert(_form_offset != 0, "");
4429 mh->obj_field_put(_form_offset, lform);
4430 }
4431
4454 oop java_lang_invoke_MemberName::type(oop mname) {
4455 assert(is_instance(mname), "wrong type");
4456 return mname->obj_field(_type_offset);
4457 }
4458
4459 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4460 assert(is_instance(mname), "wrong type");
4461 mname->obj_field_put(_type_offset, type);
4462 }
4463
4464 int java_lang_invoke_MemberName::flags(oop mname) {
4465 assert(is_instance(mname), "wrong type");
4466 return mname->int_field(_flags_offset);
4467 }
4468
4469 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4470 assert(is_instance(mname), "wrong type");
4471 mname->int_field_put(_flags_offset, flags);
4472 }
4473
4474
4475 // Return vmtarget from ResolvedMethodName method field through indirection
4476 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4477 assert(is_instance(mname), "wrong type");
4478 oop method = mname->obj_field(_method_offset);
4479 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4480 }
4481
4482 bool java_lang_invoke_MemberName::is_method(oop mname) {
4483 assert(is_instance(mname), "must be MemberName");
4484 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0;
4485 }
4486
4487 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4488 assert(is_instance(mname), "wrong type");
4489 mname->obj_field_put(_method_offset, resolved_method);
4490 }
4491
4492 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4493 assert(is_instance(mname), "wrong type");
4494 return (intptr_t) mname->address_field(_vmindex_offset);
4495 }
4496
4497 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4498 assert(is_instance(mname), "wrong type");
4499 mname->address_field_put(_vmindex_offset, (address) index);
4500 }
4501
4502
4503 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4504 assert(is_instance(resolved_method), "wrong type");
4568 int java_lang_invoke_MethodType::_rtype_offset;
4569 int java_lang_invoke_MethodType::_ptypes_offset;
4570
4571 #define METHODTYPE_FIELDS_DO(macro) \
4572 macro(_rtype_offset, k, "rtype", class_signature, false); \
4573 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4574
4575 void java_lang_invoke_MethodType::compute_offsets() {
4576 InstanceKlass* k = vmClasses::MethodType_klass();
4577 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4578 }
4579
4580 #if INCLUDE_CDS
4581 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4582 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4583 }
4584 #endif
4585
4586 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4587 st->print("(");
4588 objArrayOop pts = ptypes(mt);
4589 if (pts != nullptr) {
4590 for (int i = 0, limit = pts->length(); i < limit; i++) {
4591 java_lang_Class::print_signature(pts->obj_at(i), st);
4592 }
4593 } else {
4594 st->print("null");
4595 }
4596 st->print(")");
4597 oop rt = rtype(mt);
4598 if (rt != nullptr) {
4599 java_lang_Class::print_signature(rt, st);
4600 } else {
4601 st->print("null");
4602 }
4603 }
4604
4605 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4606 ResourceMark rm;
4607 stringStream buffer(128);
4608 print_signature(mt, &buffer);
4619
4620 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4621 if (mt1 == mt2)
4622 return true;
4623 if (rtype(mt1) != rtype(mt2))
4624 return false;
4625 if (ptype_count(mt1) != ptype_count(mt2))
4626 return false;
4627 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4628 if (ptype(mt1, i) != ptype(mt2, i))
4629 return false;
4630 }
4631 return true;
4632 }
4633
4634 oop java_lang_invoke_MethodType::rtype(oop mt) {
4635 assert(is_instance(mt), "must be a MethodType");
4636 return mt->obj_field(_rtype_offset);
4637 }
4638
4639 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4640 assert(is_instance(mt), "must be a MethodType");
4641 return (objArrayOop) mt->obj_field(_ptypes_offset);
4642 }
4643
4644 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4645 return ptypes(mt)->obj_at(idx);
4646 }
4647
4648 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4649 return ptypes(mt)->length();
4650 }
4651
4652 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4653 objArrayOop pts = ptypes(mt);
4654 int count = pts->length();
4655 int slots = 0;
4656 for (int i = 0; i < count; i++) {
4657 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4658 slots += type2size[bt];
4659 }
4660 return slots;
4661 }
4662
4663 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4664 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4665 return type2size[bt];
4666 }
4667
4668
4669 // Support for java_lang_invoke_CallSite
4670
4671 int java_lang_invoke_CallSite::_target_offset;
4672 int java_lang_invoke_CallSite::_vmdependencies_offset;
4673 int java_lang_invoke_CallSite::_last_cleanup_offset;
5058 }
5059
5060 bool vector_VectorPayload::is_instance(oop obj) {
5061 return obj != nullptr && is_subclass(obj->klass());
5062 }
5063
5064 int java_lang_Integer_IntegerCache::_static_cache_offset;
5065 int java_lang_Long_LongCache::_static_cache_offset;
5066 int java_lang_Character_CharacterCache::_static_cache_offset;
5067 int java_lang_Short_ShortCache::_static_cache_offset;
5068 int java_lang_Byte_ByteCache::_static_cache_offset;
5069
5070 #define INTEGER_CACHE_FIELDS_DO(macro) \
5071 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5072
5073 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5074 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5075 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5076 }
5077
5078 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5079 oop base = ik->static_field_base_raw();
5080 return objArrayOop(base->obj_field(_static_cache_offset));
5081 }
5082
5083 Symbol* java_lang_Integer_IntegerCache::symbol() {
5084 return vmSymbols::java_lang_Integer_IntegerCache();
5085 }
5086
5087 #if INCLUDE_CDS
5088 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5089 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5090 }
5091 #endif
5092 #undef INTEGER_CACHE_FIELDS_DO
5093
5094 #define LONG_CACHE_FIELDS_DO(macro) \
5095 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5096
5097 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5098 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5099 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5100 }
5101
5102 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5103 oop base = ik->static_field_base_raw();
5104 return objArrayOop(base->obj_field(_static_cache_offset));
5105 }
5106
5107 Symbol* java_lang_Long_LongCache::symbol() {
5108 return vmSymbols::java_lang_Long_LongCache();
5109 }
5110
5111 #if INCLUDE_CDS
5112 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5113 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5114 }
5115 #endif
5116 #undef LONG_CACHE_FIELDS_DO
5117
5118 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5119 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5120
5121 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5122 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5123 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5124 }
5125
5126 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5127 oop base = ik->static_field_base_raw();
5128 return objArrayOop(base->obj_field(_static_cache_offset));
5129 }
5130
5131 Symbol* java_lang_Character_CharacterCache::symbol() {
5132 return vmSymbols::java_lang_Character_CharacterCache();
5133 }
5134
5135 #if INCLUDE_CDS
5136 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5137 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5138 }
5139 #endif
5140 #undef CHARACTER_CACHE_FIELDS_DO
5141
5142 #define SHORT_CACHE_FIELDS_DO(macro) \
5143 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5144
5145 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5146 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5147 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5148 }
5149
5150 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5151 oop base = ik->static_field_base_raw();
5152 return objArrayOop(base->obj_field(_static_cache_offset));
5153 }
5154
5155 Symbol* java_lang_Short_ShortCache::symbol() {
5156 return vmSymbols::java_lang_Short_ShortCache();
5157 }
5158
5159 #if INCLUDE_CDS
5160 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5161 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5162 }
5163 #endif
5164 #undef SHORT_CACHE_FIELDS_DO
5165
5166 #define BYTE_CACHE_FIELDS_DO(macro) \
5167 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5168
5169 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5170 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5171 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5172 }
5173
5174 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5175 oop base = ik->static_field_base_raw();
5176 return objArrayOop(base->obj_field(_static_cache_offset));
5177 }
5178
5179 Symbol* java_lang_Byte_ByteCache::symbol() {
5180 return vmSymbols::java_lang_Byte_ByteCache();
5181 }
5182
5183 #if INCLUDE_CDS
5184 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5185 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5186 }
5187 #endif
5188 #undef BYTE_CACHE_FIELDS_DO
5189
5190 int java_lang_Boolean::_static_TRUE_offset;
5191 int java_lang_Boolean::_static_FALSE_offset;
5192
5193 #define BOOLEAN_FIELDS_DO(macro) \
5194 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
5195 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
5196
5411 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5412 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5413 return false;
5414 }
5415 if (fd.is_static()) {
5416 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5417 return false;
5418 }
5419 if (fd.offset() == deserialized_offset ) {
5420 return true;
5421 } else {
5422 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5423 klass_name, field_name, deserialized_offset, fd.offset());
5424 return false;
5425 }
5426 }
5427
5428 void JavaClasses::check_offsets() {
5429 bool valid = true;
5430
5431 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5432 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig)
5433
5434 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \
5435 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig)
5436
5437 // Boxed primitive objects (java_lang_boxing_object)
5438
5439 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z");
5440 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C");
5441 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F");
5442 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D");
5443 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B");
5444 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S");
5445 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I");
5446 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J");
5447
5448 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5449 }
5450
5451 #endif // PRODUCT
5452
5453 int InjectedField::compute_offset() {
5454 InstanceKlass* ik = klass();
5455 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5456 if (!may_be_java && !fs.field_flags().is_injected()) {
5457 // Only look at injected fields
5458 continue;
5459 }
5460 if (fs.name() == name() && fs.signature() == signature()) {
5461 return fs.offset();
5462 }
5463 }
5464 ResourceMark rm;
5465 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)" : "");
5466 #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"
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 assert(!k->is_refined_objArray_klass(), "Should not be called with the refined array klasses");
1103
1104 // The Java code for array classes gets the access flags from the element type.
1105 set_raw_access_flags(mirror(), 0);
1106 if (k->is_typeArray_klass()) {
1107 BasicType type = TypeArrayKlass::cast(k)->element_type();
1108 if (is_scratch) {
1109 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(type));
1110 } else {
1111 comp_mirror = Handle(THREAD, Universe::java_mirror(type));
1112 }
1113 } else {
1114 assert(k->is_unrefined_objArray_klass(), "Must be");
1115 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass();
1116 assert(element_klass != nullptr, "Must have an element klass");
1117 if (is_scratch) {
1118 comp_mirror = Handle(THREAD, HeapShared::scratch_java_mirror(element_klass));
1119 } else {
1120 comp_mirror = Handle(THREAD, element_klass->java_mirror());
1121 }
1122 }
1123 assert(comp_mirror() != nullptr, "must have a mirror");
1124
1125 // Two-way link between the array klass and its component mirror:
1126 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k
1127 set_component_mirror(mirror(), comp_mirror());
1128 // See below for ordering dependencies between field array_klass in component mirror
1129 // and java_mirror in this klass.
1130 } else {
1131 assert(k->is_instance_klass(), "Must be");
1132 // Set the raw access_flags, this is used by reflection instead of modifier flags.
1133 set_raw_access_flags(mirror(), InstanceKlass::cast(k)->access_flags().as_unsigned_short());
1134 initialize_mirror_fields(InstanceKlass::cast(k), mirror, protection_domain, classData, THREAD);
1135 if (HAS_PENDING_EXCEPTION) {
1136 // If any of the fields throws an exception like OOM remove the klass field
1137 // from the mirror so GC doesn't follow it after the klass has been deallocated.
1138 // This mirror looks like a primitive type, which logically it is because it
1139 // it represents no class.
1140 set_klass(mirror(), nullptr);
1141 return;
1142 }
1143 }
1144 }
1145
1146 void java_lang_Class::create_mirror(Klass* k, Handle class_loader,
1147 Handle module, Handle protection_domain,
1148 Handle classData, TRAPS) {
1149 assert(k != nullptr, "Use create_basic_type_mirror for primitive types");
1150 assert(k->java_mirror() == nullptr, "should only assign mirror once");
1151 // Class_klass has to be loaded because it is used to allocate
1152 // the mirror.
1153 if (vmClasses::Class_klass_is_loaded()) {
1154
1155 if (k->is_refined_objArray_klass()) {
1156 Klass* super_klass = k->super();
1157 assert(super_klass != nullptr, "Must be");
1158 Handle mirror(THREAD, super_klass->java_mirror());
1159 k->set_java_mirror(mirror);
1160 return;
1161 }
1162
1163 Handle mirror;
1164 Handle comp_mirror;
1165
1166 allocate_mirror(k, /*is_scratch=*/false, protection_domain, classData, mirror, comp_mirror, CHECK);
1167
1168 // set the classLoader field in the java_lang_Class instance
1169 assert(class_loader() == k->class_loader(), "should be same");
1170 set_class_loader(mirror(), class_loader());
1171
1172 // Setup indirection from klass->mirror
1173 // after any exceptions can happen during allocations.
1174 k->set_java_mirror(mirror);
1175
1176 // Set the module field in the java_lang_Class instance. This must be done
1177 // after the mirror is set.
1178 set_mirror_module_field(THREAD, k, mirror, module);
1179
1180 if (comp_mirror() != nullptr) {
1181 // Set after k->java_mirror() is published, because compiled code running
1182 // concurrently doesn't expect a k to have a null java_mirror.
1183 release_set_array_klass(comp_mirror(), k);
1184 }
1185
1186 if (CDSConfig::is_dumping_heap()) {
1187 create_scratch_mirror(k, CHECK);
1188 }
1189 } else {
1190 assert(!CDSConfig::is_using_aot_linked_classes(), "should not come here");
1191 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1192 fixup_mirror_list()->push(k);
1193 }
1194 }
1195
1196 #if INCLUDE_CDS_JAVA_HEAP
1197 // The "scratch mirror" stores the states of the mirror object that can be
1198 // decided at dump time (such as the initial values of the static fields, the
1199 // component mirror, etc). At runtime, more information is added to it by
1200 // java_lang_Class::restore_archived_mirror().
1201 //
1202 // Essentially, /*dumptime*/create_scratch_mirror() + /*runtime*/restore_archived_mirror()
1203 // produces the same result as /*runtime*/create_mirror().
1204 //
1205 // Note: we archive the "scratch mirror" instead of k->java_mirror(), because the
1230 // shared klass' _has_raw_archived_mirror flag is cleared.
1231 bool java_lang_Class::restore_archived_mirror(Klass *k,
1232 Handle class_loader, Handle module,
1233 Handle protection_domain, TRAPS) {
1234 // Postpone restoring archived mirror until java.lang.Class is loaded. Please
1235 // see more details in vmClasses::resolve_all().
1236 if (!vmClasses::Class_klass_is_loaded() && !CDSConfig::is_using_aot_linked_classes()) {
1237 assert(fixup_mirror_list() != nullptr, "fixup_mirror_list not initialized");
1238 fixup_mirror_list()->push(k);
1239 return true;
1240 }
1241
1242 oop m = k->archived_java_mirror();
1243 assert(m != nullptr, "must have stored non-null archived mirror");
1244
1245 // Sanity: clear it now to prevent re-initialization if any of the following fails
1246 k->clear_archived_mirror_index();
1247
1248 // mirror is archived, restore
1249 log_debug(aot, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m));
1250 Handle mirror(THREAD, m);
1251
1252 if (!k->is_array_klass()) {
1253 assert(as_Klass(m) == k, "must be");
1254 // - local static final fields with initial values were initialized at dump time
1255 assert(init_lock(mirror()) != nullptr, "allocated during AOT assembly");
1256
1257 if (protection_domain.not_null()) {
1258 set_protection_domain(mirror(), protection_domain());
1259 }
1260 } else if (k->is_objArray_klass()) {
1261 ObjArrayKlass* objarray_k = (ObjArrayKlass*)as_Klass(m);
1262 // Mirror should be restored for an ObjArrayKlass or one of its refined array klasses
1263 assert(objarray_k == k || objarray_k->find_refined_array_klass((ObjArrayKlass*)k), "must be");
1264 }
1265
1266 assert(class_loader() == k->class_loader(), "should be same");
1267 if (class_loader.not_null()) {
1268 set_class_loader(mirror(), class_loader());
1269 }
1270
1271 k->set_java_mirror(mirror);
1272
1273 set_mirror_module_field(THREAD, k, mirror, module);
1274
1275 if (log_is_enabled(Trace, aot, heap, mirror)) {
1276 ResourceMark rm(THREAD);
1277 log_trace(aot, heap, mirror)(
1278 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror()));
1279 }
1280
1281 if (CDSConfig::is_dumping_heap() && (!k->is_refined_objArray_klass())) {
1282 create_scratch_mirror(k, CHECK_(false));
1283 }
1284
1285 return true;
1286 }
1287 #endif // INCLUDE_CDS_JAVA_HEAP
1288
1289 void java_lang_Class::fixup_module_field(Klass* k, Handle module) {
1290 assert(_module_offset != 0, "must have been computed already");
1291 set_module(k->java_mirror(), module());
1292 }
1293
1294 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) {
1295 assert(_oop_size_offset != 0, "must be set");
1296 assert(size > 0, "Oop size must be greater than zero, not %zu", size);
1297 assert(size <= INT_MAX, "Lossy conversion: %zu", size);
1298 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size;
1299 }
1300
1301 int java_lang_Class::static_oop_field_count(oop java_class) {
1380 java_class->obj_field_put(_name_offset, o);
1381 }
1382 return o;
1383 }
1384
1385 oop java_lang_Class::source_file(oop java_class) {
1386 assert(_source_file_offset != 0, "must be set");
1387 return java_class->obj_field(_source_file_offset);
1388 }
1389
1390 void java_lang_Class::set_source_file(oop java_class, oop source_file) {
1391 assert(_source_file_offset != 0, "must be set");
1392 java_class->obj_field_put(_source_file_offset, source_file);
1393 }
1394
1395 void java_lang_Class::set_is_primitive(oop java_class) {
1396 assert(_is_primitive_offset != 0, "must be set");
1397 java_class->bool_field_put(_is_primitive_offset, true);
1398 }
1399
1400 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) {
1401 // Mirrors for basic types have a null klass field, which makes them special.
1402 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(nullptr, CHECK_NULL);
1403 if (type != T_VOID) {
1404 Klass* aklass = Universe::typeArrayKlass(type);
1405 assert(aklass != nullptr, "correct bootstrap");
1406 release_set_array_klass(java_class, aklass);
1407 }
1408 #ifdef ASSERT
1409 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass());
1410 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation");
1411 #endif
1412 set_modifiers(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1413 set_raw_access_flags(java_class, JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC);
1414
1415 set_is_primitive(java_class);
1416 return java_class;
1417 }
1418
1419 void java_lang_Class::set_klass(oop java_class, Klass* klass) {
1478 const char* name = nullptr;
1479 if (is_primitive(java_class)) {
1480 name = type2name(primitive_type(java_class));
1481 } else {
1482 name = as_Klass(java_class)->external_name();
1483 }
1484 if (name == nullptr) {
1485 name = "<null>";
1486 }
1487 return name;
1488 }
1489
1490 Klass* java_lang_Class::array_klass_acquire(oop java_class) {
1491 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset));
1492 assert(k == nullptr || (k->is_klass() && k->is_array_klass()), "should be array klass");
1493 return k;
1494 }
1495
1496 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) {
1497 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass");
1498 assert(!klass->is_refined_objArray_klass(), "should not be ref or flat array klass");
1499 java_class->release_metadata_field_put(_array_klass_offset, klass);
1500 }
1501
1502
1503 BasicType java_lang_Class::primitive_type(oop java_class) {
1504 assert(is_primitive(java_class), "just checking");
1505 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset));
1506 BasicType type = T_VOID;
1507 if (ak != nullptr) {
1508 // Note: create_basic_type_mirror above initializes ak to a non-null value.
1509 type = ArrayKlass::cast(ak)->element_type();
1510 } else {
1511 assert(java_class == Universe::void_mirror(), "only valid non-array primitive");
1512 }
1513 #ifdef ASSERT
1514 if (CDSConfig::is_dumping_heap()) {
1515 oop mirror = Universe::java_mirror(type);
1516 oop scratch_mirror = HeapShared::scratch_java_mirror(type);
1517 assert(java_class == mirror || java_class == scratch_mirror, "must be consistent");
1518 } else {
1988 ResourceMark rm(THREAD);
1989 HandleMark hm(THREAD);
1990 GetStackTraceHandshakeClosure gsthc(Handle(THREAD, thread_oop));
1991 if (is_virtual) {
1992 Handshake::execute(&gsthc, thread_oop);
1993 } else {
1994 Handshake::execute(&gsthc, &tlh, java_thread);
1995 }
1996
1997 // Stop if no stack trace is found.
1998 if (gsthc._depth == 0) {
1999 return nullptr;
2000 }
2001
2002 // Convert to StackTraceElement array
2003 InstanceKlass* k = vmClasses::StackTraceElement_klass();
2004 assert(k != nullptr, "must be loaded in 1.4+");
2005 if (k->should_be_initialized()) {
2006 k->initialize(CHECK_NULL);
2007 }
2008 refArrayHandle trace = oopFactory::new_refArray_handle(k, gsthc._depth, CHECK_NULL);
2009
2010 for (int i = 0; i < gsthc._depth; i++) {
2011 methodHandle method(THREAD, gsthc._methods.at(i));
2012 oop element = java_lang_StackTraceElement::create(method,
2013 gsthc._bcis.at(i),
2014 CHECK_NULL);
2015 trace->obj_at_put(i, element);
2016 }
2017
2018 return trace();
2019 }
2020
2021 const char* java_lang_Thread::thread_status_name(oop java_thread) {
2022 JavaThreadStatus status = get_thread_status(java_thread);
2023 switch (status) {
2024 case JavaThreadStatus::NEW : return "NEW";
2025 case JavaThreadStatus::RUNNABLE : return "RUNNABLE";
2026 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)";
2027 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)";
2028 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)";
2279 macro(_cause_offset, k, "cause", throwable_signature, false); \
2280 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true)
2281
2282 void java_lang_Throwable::compute_offsets() {
2283 InstanceKlass* k = vmClasses::Throwable_klass();
2284 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
2285 }
2286
2287 #if INCLUDE_CDS
2288 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) {
2289 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
2290 }
2291 #endif
2292
2293 oop java_lang_Throwable::unassigned_stacktrace() {
2294 InstanceKlass* ik = vmClasses::Throwable_klass();
2295 oop base = ik->static_field_base_raw();
2296 return base->obj_field(_static_unassigned_stacktrace_offset);
2297 }
2298
2299 refArrayOop java_lang_Throwable::backtrace(oop throwable) {
2300 return (refArrayOop)throwable->obj_field_acquire(_backtrace_offset);
2301 }
2302
2303
2304 void java_lang_Throwable::set_backtrace(oop throwable, refArrayOop value) {
2305 throwable->release_obj_field_put(_backtrace_offset, value);
2306 }
2307
2308 int java_lang_Throwable::depth(oop throwable) {
2309 return throwable->int_field(_depth_offset);
2310 }
2311
2312 void java_lang_Throwable::set_depth(oop throwable, int value) {
2313 throwable->int_field_put(_depth_offset, value);
2314 }
2315
2316 oop java_lang_Throwable::message(oop throwable) {
2317 return throwable->obj_field(_detailMessage_offset);
2318 }
2319
2320 const char* java_lang_Throwable::message_as_utf8(oop throwable) {
2321 oop msg = java_lang_Throwable::message(throwable);
2322 const char* msg_utf8 = nullptr;
2323 if (msg != nullptr) {
2324 msg_utf8 = java_lang_String::as_utf8_string(msg);
2354 st->print(": %s", java_lang_String::as_utf8_string(msg));
2355 }
2356 }
2357
2358 // After this many redefines, the stack trace is unreliable.
2359 const int MAX_VERSION = USHRT_MAX;
2360
2361 static inline bool version_matches(Method* method, int version) {
2362 assert(version < MAX_VERSION, "version is too big");
2363 return method != nullptr && (method->constants()->version() == version);
2364 }
2365
2366 // This class provides a simple wrapper over the internal structure of
2367 // exception backtrace to insulate users of the backtrace from needing
2368 // to know what it looks like.
2369 // The code of this class is not GC safe. Allocations can only happen
2370 // in expand().
2371 class BacktraceBuilder: public StackObj {
2372 friend class BacktraceIterator;
2373 private:
2374 refArrayHandle _backtrace;
2375 refArrayOop _head;
2376 typeArrayOop _methods;
2377 typeArrayOop _bcis;
2378 refArrayOop _mirrors;
2379 typeArrayOop _names; // Needed to insulate method name against redefinition.
2380 // True if the top frame of the backtrace is omitted because it shall be hidden.
2381 bool _has_hidden_top_frame;
2382 int _index;
2383 NoSafepointVerifier _nsv;
2384
2385 enum {
2386 trace_methods_offset = java_lang_Throwable::trace_methods_offset,
2387 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset,
2388 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
2389 trace_names_offset = java_lang_Throwable::trace_names_offset,
2390 trace_conts_offset = java_lang_Throwable::trace_conts_offset,
2391 trace_next_offset = java_lang_Throwable::trace_next_offset,
2392 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset,
2393 trace_size = java_lang_Throwable::trace_size,
2394 trace_chunk_size = java_lang_Throwable::trace_chunk_size
2395 };
2396
2397 // get info out of chunks
2398 static typeArrayOop get_methods(refArrayHandle chunk) {
2399 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset));
2400 assert(methods != nullptr, "method array should be initialized in backtrace");
2401 return methods;
2402 }
2403 static typeArrayOop get_bcis(refArrayHandle chunk) {
2404 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset));
2405 assert(bcis != nullptr, "bci array should be initialized in backtrace");
2406 return bcis;
2407 }
2408 static refArrayOop get_mirrors(refArrayHandle chunk) {
2409 refArrayOop mirrors = refArrayOop(chunk->obj_at(trace_mirrors_offset));
2410 assert(mirrors != nullptr, "mirror array should be initialized in backtrace");
2411 return mirrors;
2412 }
2413 static typeArrayOop get_names(refArrayHandle chunk) {
2414 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset));
2415 assert(names != nullptr, "names array should be initialized in backtrace");
2416 return names;
2417 }
2418 static bool has_hidden_top_frame(refArrayHandle chunk) {
2419 oop hidden = chunk->obj_at(trace_hidden_offset);
2420 return hidden != nullptr;
2421 }
2422
2423 public:
2424
2425 // constructor for new backtrace
2426 BacktraceBuilder(TRAPS): _head(nullptr), _methods(nullptr), _bcis(nullptr), _mirrors(nullptr), _names(nullptr), _has_hidden_top_frame(false) {
2427 expand(CHECK);
2428 _backtrace = refArrayHandle(THREAD, _head);
2429 _index = 0;
2430 }
2431
2432 BacktraceBuilder(Thread* thread, refArrayHandle backtrace) {
2433 _methods = get_methods(backtrace);
2434 _bcis = get_bcis(backtrace);
2435 _mirrors = get_mirrors(backtrace);
2436 _names = get_names(backtrace);
2437 _has_hidden_top_frame = has_hidden_top_frame(backtrace);
2438 assert(_methods->length() == _bcis->length() &&
2439 _methods->length() == _mirrors->length() &&
2440 _mirrors->length() == _names->length(),
2441 "method and source information arrays should match");
2442
2443 // head is the preallocated backtrace
2444 _head = backtrace();
2445 _backtrace = refArrayHandle(thread, _head);
2446 _index = 0;
2447 }
2448
2449 void expand(TRAPS) {
2450 refArrayHandle old_head(THREAD, _head);
2451 PauseNoSafepointVerifier pnsv(&_nsv);
2452
2453 refArrayOop head = oopFactory::new_objectArray(trace_size, CHECK);
2454 refArrayHandle new_head(THREAD, head);
2455
2456 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK);
2457 typeArrayHandle new_methods(THREAD, methods);
2458
2459 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK);
2460 typeArrayHandle new_bcis(THREAD, bcis);
2461
2462 refArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK);
2463 refArrayHandle new_mirrors(THREAD, mirrors);
2464
2465 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK);
2466 typeArrayHandle new_names(THREAD, names);
2467
2468 if (!old_head.is_null()) {
2469 old_head->obj_at_put(trace_next_offset, new_head());
2470 }
2471 new_head->obj_at_put(trace_methods_offset, new_methods());
2472 new_head->obj_at_put(trace_bcis_offset, new_bcis());
2473 new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
2474 new_head->obj_at_put(trace_names_offset, new_names());
2475 new_head->obj_at_put(trace_hidden_offset, nullptr);
2476
2477 _head = new_head();
2478 _methods = new_methods();
2479 _bcis = new_bcis();
2480 _mirrors = new_mirrors();
2481 _names = new_names();
2482 _index = 0;
2483 }
2484
2485 refArrayOop backtrace() {
2486 return _backtrace();
2487 }
2488
2489 inline void push(Method* method, int bci, TRAPS) {
2490 // Smear the -1 bci to 0 since the array only holds unsigned
2491 // shorts. The later line number lookup would just smear the -1
2492 // to a 0 even if it could be recorded.
2493 if (bci == SynchronizationEntryBCI) bci = 0;
2494
2495 if (_index >= trace_chunk_size) {
2496 methodHandle mhandle(THREAD, method);
2497 expand(CHECK);
2498 method = mhandle();
2499 }
2500
2501 _methods->ushort_at_put(_index, method->orig_method_idnum());
2502 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version()));
2503
2504 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the
2505 // klass owning the symbols alive so their refcounts aren't decremented.
2523 // available right here. _methods is a short[].
2524 assert(_methods != nullptr, "we need a legal oop");
2525 _has_hidden_top_frame = true;
2526 _head->obj_at_put(trace_hidden_offset, _methods);
2527 }
2528 }
2529 };
2530
2531 struct BacktraceElement : public StackObj {
2532 int _method_id;
2533 int _bci;
2534 int _version;
2535 Symbol* _name;
2536 Handle _mirror;
2537 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) :
2538 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {}
2539 };
2540
2541 class BacktraceIterator : public StackObj {
2542 int _index;
2543 refArrayHandle _result;
2544 refArrayHandle _mirrors;
2545 typeArrayHandle _methods;
2546 typeArrayHandle _bcis;
2547 typeArrayHandle _names;
2548
2549 void init(refArrayHandle result, Thread* thread) {
2550 // Get method id, bci, version and mirror from chunk
2551 _result = result;
2552 if (_result.not_null()) {
2553 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result));
2554 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result));
2555 _mirrors = refArrayHandle(thread, BacktraceBuilder::get_mirrors(_result));
2556 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result));
2557 _index = 0;
2558 }
2559 }
2560 public:
2561 BacktraceIterator(refArrayHandle result, Thread* thread) {
2562 init(result, thread);
2563 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match");
2564 }
2565
2566 BacktraceElement next(Thread* thread) {
2567 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)),
2568 _methods->ushort_at(_index),
2569 Backtrace::version_at(_bcis->int_at(_index)),
2570 Backtrace::bci_at(_bcis->int_at(_index)),
2571 _names->symbol_at(_index));
2572 _index++;
2573
2574 if (_index >= java_lang_Throwable::trace_chunk_size) {
2575 int next_offset = java_lang_Throwable::trace_next_offset;
2576 // Get next chunk
2577 refArrayHandle result (thread, refArrayOop(_result->obj_at(next_offset)));
2578 init(result, thread);
2579 }
2580 return e;
2581 }
2582
2583 bool repeat() {
2584 return _result.not_null() && _mirrors->obj_at(_index) != nullptr;
2585 }
2586 };
2587
2588
2589 // Print stack trace element to the specified output stream.
2590 // The output is formatted into a stringStream and written to the outputStream in one step.
2591 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id,
2592 int version, int bci, Symbol* name) {
2593 ResourceMark rm;
2594 stringStream ss;
2595
2596 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(mirror());
2597 const char* klass_name = holder->external_name();
2648
2649 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) {
2650 Handle mirror (Thread::current(), method->method_holder()->java_mirror());
2651 int method_id = method->orig_method_idnum();
2652 int version = method->constants()->version();
2653 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name());
2654 }
2655
2656 /**
2657 * Print the throwable message and its stack trace plus all causes by walking the
2658 * cause chain. The output looks the same as of Throwable.printStackTrace().
2659 */
2660 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) {
2661 // First, print the message.
2662 print(throwable(), st);
2663 st->cr();
2664
2665 // Now print the stack trace.
2666 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2667 while (throwable.not_null()) {
2668 refArrayHandle result (THREAD, backtrace(throwable()));
2669 if (result.is_null()) {
2670 st->print_raw_cr("\t<<no stack trace available>>");
2671 return;
2672 }
2673 BacktraceIterator iter(result, THREAD);
2674
2675 while (iter.repeat()) {
2676 BacktraceElement bte = iter.next(THREAD);
2677 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name);
2678 }
2679 if (THREAD->can_call_java()) {
2680 // Call getCause() which doesn't necessarily return the _cause field.
2681 ExceptionMark em(THREAD);
2682 JavaValue cause(T_OBJECT);
2683 JavaCalls::call_virtual(&cause,
2684 throwable,
2685 throwable->klass(),
2686 vmSymbols::getCause_name(),
2687 vmSymbols::void_throwable_signature(),
2688 THREAD);
2832
2833 // the format of the stacktrace will be:
2834 // - 1 or more fillInStackTrace frames for the exception class (skipped)
2835 // - 0 or more <init> methods for the exception class (skipped)
2836 // - rest of the stack
2837
2838 if (!skip_fillInStackTrace_check) {
2839 if (method->name() == vmSymbols::fillInStackTrace_name() &&
2840 throwable->is_a(method->method_holder())) {
2841 continue;
2842 }
2843 else {
2844 skip_fillInStackTrace_check = true; // gone past them all
2845 }
2846 }
2847 if (!skip_throwableInit_check) {
2848 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering");
2849
2850 // skip <init> methods of the exception class and superclasses
2851 // This is similar to classic VM.
2852 if (method->is_object_constructor() &&
2853 throwable->is_a(method->method_holder())) {
2854 continue;
2855 } else {
2856 // there are none or we've seen them all - either way stop checking
2857 skip_throwableInit_check = true;
2858 }
2859 }
2860 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) {
2861 if (skip_hidden) {
2862 if (total_count == 0) {
2863 // The top frame will be hidden from the stack trace.
2864 bt.set_has_hidden_top_frame();
2865 }
2866 continue;
2867 }
2868 }
2869
2870 bt.push(method, bci, CHECK);
2871 total_count++;
2872 }
2901 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) {
2902 // Allocate stack trace - backtrace is created but not filled in
2903
2904 // No-op if stack trace is disabled
2905 if (!StackTraceInThrowable) return;
2906 BacktraceBuilder bt(CHECK); // creates a backtrace
2907 set_backtrace(throwable(), bt.backtrace());
2908 }
2909
2910
2911 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) {
2912 // Fill in stack trace into preallocated backtrace (no GC)
2913
2914 // No-op if stack trace is disabled
2915 if (!StackTraceInThrowable) return;
2916
2917 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check");
2918
2919 JavaThread* THREAD = JavaThread::current(); // For exception macros.
2920
2921 refArrayHandle backtrace(THREAD, java_lang_Throwable::backtrace(throwable()));
2922 assert(backtrace.not_null(), "backtrace should have been preallocated");
2923
2924 ResourceMark rm(THREAD);
2925 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */);
2926
2927 BacktraceBuilder bt(THREAD, backtrace);
2928
2929 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init
2930 // methods as preallocated errors aren't created by "java" code.
2931
2932 // fill in as much stack trace as possible
2933 int chunk_count = 0;
2934 for (;!st.at_end(); st.next()) {
2935 bt.push(st.method(), st.bci(), CHECK);
2936 chunk_count++;
2937
2938 // Bail-out for deep stacks
2939 if (chunk_count >= trace_chunk_size) break;
2940 }
2941 set_depth(throwable(), chunk_count);
2942 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count);
2943
2944 // We support the Throwable immutability protocol defined for Java 7.
2945 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace());
2946 assert(java_lang_Throwable::unassigned_stacktrace() != nullptr, "not initialized");
2947 }
2948
2949 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace,
2950 refArrayHandle stack_trace_array_h, TRAPS) {
2951
2952 if (backtrace.is_null() || stack_trace_array_h.is_null()) {
2953 THROW(vmSymbols::java_lang_NullPointerException());
2954 }
2955
2956 assert(stack_trace_array_h->is_refArray(), "Stack trace array should be an array of StackTraceElement");
2957
2958 if (stack_trace_array_h->length() != depth) {
2959 THROW(vmSymbols::java_lang_IndexOutOfBoundsException());
2960 }
2961
2962 refArrayHandle result(THREAD, refArrayOop(backtrace()));
2963 BacktraceIterator iter(result, THREAD);
2964
2965 int index = 0;
2966 while (iter.repeat()) {
2967 BacktraceElement bte = iter.next(THREAD);
2968
2969 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++));
2970
2971 if (stack_trace_element.is_null()) {
2972 THROW(vmSymbols::java_lang_NullPointerException());
2973 }
2974
2975 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
2976 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version));
2977
2978 java_lang_StackTraceElement::fill_in(stack_trace_element, holder,
2979 method,
2980 bte._version,
2981 bte._bci,
2982 bte._name,
3026 vmSymbols::getStackTrace_name(),
3027 vmSymbols::getStackTrace_signature(),
3028 current);
3029 if (!current->has_pending_exception()){
3030 Handle stack_trace(current, result.get_oop());
3031 assert(stack_trace->is_objArray(), "Should be an array");
3032 java_lang_Throwable::set_stacktrace(init_error(), stack_trace());
3033 // Clear backtrace because the stacktrace should be used instead.
3034 set_backtrace(init_error(), nullptr);
3035 } else {
3036 log_info(class, init)("Exception thrown while getting stack trace for initialization exception %s",
3037 init_error->klass()->external_name());
3038 current->clear_pending_exception();
3039 }
3040
3041 return init_error;
3042 }
3043
3044 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
3045 JavaThread* current = JavaThread::current();
3046 refArrayHandle result(current, backtrace(throwable));
3047 BacktraceIterator iter(result, current);
3048 // No backtrace available.
3049 if (!iter.repeat()) return false;
3050
3051 // If the exception happened in a frame that has been hidden, i.e.,
3052 // omitted from the back trace, we can not compute the message.
3053 oop hidden = backtrace(throwable)->obj_at(trace_hidden_offset);
3054 if (hidden != nullptr) {
3055 return false;
3056 }
3057
3058 // Get first backtrace element.
3059 BacktraceElement bte = iter.next(current);
3060
3061 InstanceKlass* holder = java_lang_Class::as_InstanceKlass(bte._mirror());
3062 assert(holder != nullptr, "first element should be non-null");
3063 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
3064
3065 // Original version is no longer available.
3066 if (m == nullptr || !version_matches(m, bte._version)) {
3067 return false;
3068 }
3069
3070 *method = m;
3071 *bci = bte._bci;
3072 return true;
3073 }
3174 int java_lang_ClassFrameInfo::_classOrMemberName_offset;
3175 int java_lang_ClassFrameInfo::_flags_offset;
3176
3177 #define CLASSFRAMEINFO_FIELDS_DO(macro) \
3178 macro(_classOrMemberName_offset, k, "classOrMemberName", object_signature, false); \
3179 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false)
3180
3181 void java_lang_ClassFrameInfo::compute_offsets() {
3182 InstanceKlass* k = vmClasses::ClassFrameInfo_klass();
3183 CLASSFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3184 }
3185
3186 #if INCLUDE_CDS
3187 void java_lang_ClassFrameInfo::serialize_offsets(SerializeClosure* f) {
3188 CLASSFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3189 }
3190 #endif
3191
3192 static int get_flags(const methodHandle& m) {
3193 int flags = m->access_flags().as_method_flags();
3194 if (m->is_object_constructor()) {
3195 flags |= java_lang_invoke_MemberName::MN_IS_OBJECT_CONSTRUCTOR;
3196 } else {
3197 // Note: Static initializers can be here. Record them as plain methods.
3198 flags |= java_lang_invoke_MemberName::MN_IS_METHOD;
3199 }
3200 if (m->caller_sensitive()) {
3201 flags |= java_lang_invoke_MemberName::MN_CALLER_SENSITIVE;
3202 }
3203 if (m->is_hidden()) {
3204 flags |= java_lang_invoke_MemberName::MN_HIDDEN_MEMBER;
3205 }
3206 assert((flags & 0xFF000000) == 0, "unexpected flags");
3207 return flags;
3208 }
3209
3210 oop java_lang_ClassFrameInfo::classOrMemberName(oop obj) {
3211 return obj->obj_field(_classOrMemberName_offset);
3212 }
3213
3214 int java_lang_ClassFrameInfo::flags(oop obj) {
3215 return obj->int_field(_flags_offset);
3566 constructor->int_field_put(_modifiers_offset, value);
3567 }
3568
3569 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) {
3570 constructor->obj_field_put(_signature_offset, value);
3571 }
3572
3573 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) {
3574 constructor->obj_field_put(_annotations_offset, value);
3575 }
3576
3577 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) {
3578 method->obj_field_put(_parameter_annotations_offset, value);
3579 }
3580
3581 int java_lang_reflect_Field::_clazz_offset;
3582 int java_lang_reflect_Field::_name_offset;
3583 int java_lang_reflect_Field::_type_offset;
3584 int java_lang_reflect_Field::_slot_offset;
3585 int java_lang_reflect_Field::_modifiers_offset;
3586 int java_lang_reflect_Field::_flags_offset;
3587 int java_lang_reflect_Field::_signature_offset;
3588 int java_lang_reflect_Field::_annotations_offset;
3589 JFR_ONLY(int java_lang_reflect_Field::_jfr_epoch_offset;)
3590
3591 #define FIELD_FIELDS_DO(macro) \
3592 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \
3593 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \
3594 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \
3595 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \
3596 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \
3597 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \
3598 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \
3599 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false);
3600
3601 void java_lang_reflect_Field::compute_offsets() {
3602 InstanceKlass* k = vmClasses::reflect_Field_klass();
3603 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3604 JFR_ONLY(FIELD_INJECTED_FIELDS(INJECTED_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 JFR_ONLY(FIELD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET);)
3611 }
3612 #endif
3613
3614 Handle java_lang_reflect_Field::create(TRAPS) {
3615 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem");
3616 Symbol* name = vmSymbols::java_lang_reflect_Field();
3617 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH);
3644 void java_lang_reflect_Field::set_type(oop field, oop value) {
3645 field->obj_field_put(_type_offset, value);
3646 }
3647
3648 int java_lang_reflect_Field::slot(oop reflect) {
3649 return reflect->int_field(_slot_offset);
3650 }
3651
3652 void java_lang_reflect_Field::set_slot(oop reflect, int value) {
3653 reflect->int_field_put(_slot_offset, value);
3654 }
3655
3656 int java_lang_reflect_Field::modifiers(oop field) {
3657 return field->int_field(_modifiers_offset);
3658 }
3659
3660 void java_lang_reflect_Field::set_modifiers(oop field, int value) {
3661 field->int_field_put(_modifiers_offset, value);
3662 }
3663
3664 void java_lang_reflect_Field::set_flags(oop field, int value) {
3665 field->int_field_put(_flags_offset, value);
3666 }
3667
3668 void java_lang_reflect_Field::set_signature(oop field, oop value) {
3669 field->obj_field_put(_signature_offset, value);
3670 }
3671
3672 void java_lang_reflect_Field::set_annotations(oop field, oop value) {
3673 field->obj_field_put(_annotations_offset, value);
3674 }
3675
3676 #if INCLUDE_JFR
3677 u2 java_lang_reflect_Field::epoch(oop ref) {
3678 return static_cast<u2>(ref->int_field(_jfr_epoch_offset));
3679 }
3680 #endif // INCLUDE_JFR
3681
3682 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) {
3683 // Allocate java.lang.reflect.RecordComponent instance
3684 HandleMark hm(THREAD);
3685 InstanceKlass* ik = vmClasses::RecordComponent_klass();
3951 }
3952 #endif
3953
3954 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) {
3955 assert(obj != nullptr, "sanity");
3956 if (offset != _referent_offset) {
3957 return false;
3958 }
3959
3960 Klass* k = obj->klass();
3961 if (!k->is_instance_klass()) {
3962 return false;
3963 }
3964
3965 InstanceKlass* ik = InstanceKlass::cast(obj->klass());
3966 bool is_reference = ik->reference_type() != REF_NONE;
3967 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity");
3968 return is_reference;
3969 }
3970
3971 int* java_lang_boxing_object::_offsets;
3972
3973 #define BOXING_FIELDS_DO(macro) \
3974 macro(java_lang_boxing_object::_offsets[T_BOOLEAN - T_BOOLEAN], vmClasses::Boolean_klass(), "value", bool_signature, false); \
3975 macro(java_lang_boxing_object::_offsets[T_CHAR - T_BOOLEAN], vmClasses::Character_klass(), "value", char_signature, false); \
3976 macro(java_lang_boxing_object::_offsets[T_FLOAT - T_BOOLEAN], vmClasses::Float_klass(), "value", float_signature, false); \
3977 macro(java_lang_boxing_object::_offsets[T_DOUBLE - T_BOOLEAN], vmClasses::Double_klass(), "value", double_signature, false); \
3978 macro(java_lang_boxing_object::_offsets[T_BYTE - T_BOOLEAN], vmClasses::Byte_klass(), "value", byte_signature, false); \
3979 macro(java_lang_boxing_object::_offsets[T_SHORT - T_BOOLEAN], vmClasses::Short_klass(), "value", short_signature, false); \
3980 macro(java_lang_boxing_object::_offsets[T_INT - T_BOOLEAN], vmClasses::Integer_klass(), "value", int_signature, false); \
3981 macro(java_lang_boxing_object::_offsets[T_LONG - T_BOOLEAN], vmClasses::Long_klass(), "value", long_signature, false);
3982
3983 void java_lang_boxing_object::compute_offsets() {
3984 assert(T_LONG - T_BOOLEAN == 7, "Sanity check");
3985 java_lang_boxing_object::_offsets = NEW_C_HEAP_ARRAY(int, 8, mtInternal);
3986 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET);
3987 }
3988
3989 #if INCLUDE_CDS
3990 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) {
3991 if (f->reading()) {
3992 assert(T_LONG - T_BOOLEAN == 7, "Sanity check");
3993 java_lang_boxing_object::_offsets = NEW_C_HEAP_ARRAY(int, 8, mtInternal);
3994 }
3995 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
3996 }
3997 #endif
3998
3999 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) {
4000 Klass* k = vmClasses::box_klass(type);
4001 if (k == nullptr) return nullptr;
4002 InstanceKlass* ik = InstanceKlass::cast(k);
4003 if (!ik->is_initialized()) {
4004 ik->initialize(CHECK_NULL);
4005 }
4006 return ik->allocate_instance(THREAD);
4007 }
4008
4009
4010 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) {
4011 oop box = initialize_and_allocate(type, CHECK_NULL);
4012 if (box == nullptr) return nullptr;
4013 switch (type) {
4014 case T_BOOLEAN:
4015 box->bool_field_put(value_offset(type), value->z);
4016 break;
4017 case T_CHAR:
4018 box->char_field_put(value_offset(type), value->c);
4019 break;
4020 case T_FLOAT:
4021 box->float_field_put(value_offset(type), value->f);
4022 break;
4023 case T_DOUBLE:
4024 box->double_field_put(value_offset(type), value->d);
4025 break;
4026 case T_BYTE:
4027 box->byte_field_put(value_offset(type), value->b);
4028 break;
4029 case T_SHORT:
4030 box->short_field_put(value_offset(type), value->s);
4031 break;
4032 case T_INT:
4033 box->int_field_put(value_offset(type), value->i);
4034 break;
4035 case T_LONG:
4036 box->long_field_put(value_offset(type), value->j);
4037 break;
4038 default:
4039 return nullptr;
4040 }
4041 return box;
4042 }
4043
4044
4045 BasicType java_lang_boxing_object::basic_type(oop box) {
4046 if (box == nullptr) return T_ILLEGAL;
4047 BasicType type = vmClasses::box_klass_type(box->klass());
4048 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt
4049 return T_ILLEGAL;
4050 return type;
4051 }
4052
4053
4054 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) {
4055 BasicType type = vmClasses::box_klass_type(box->klass());
4056 switch (type) {
4057 case T_BOOLEAN:
4058 value->z = box->bool_field(value_offset(type));
4059 break;
4060 case T_CHAR:
4061 value->c = box->char_field(value_offset(type));
4062 break;
4063 case T_FLOAT:
4064 value->f = box->float_field(value_offset(type));
4065 break;
4066 case T_DOUBLE:
4067 value->d = box->double_field(value_offset(type));
4068 break;
4069 case T_BYTE:
4070 value->b = box->byte_field(value_offset(type));
4071 break;
4072 case T_SHORT:
4073 value->s = box->short_field(value_offset(type));
4074 break;
4075 case T_INT:
4076 value->i = box->int_field(value_offset(type));
4077 break;
4078 case T_LONG:
4079 value->j = box->long_field(value_offset(type));
4080 break;
4081 default:
4082 return T_ILLEGAL;
4083 } // end switch
4084 return type;
4085 }
4086
4087
4088 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) {
4089 BasicType type = vmClasses::box_klass_type(box->klass());
4090 switch (type) {
4091 case T_BOOLEAN:
4092 box->bool_field_put(value_offset(type), value->z);
4093 break;
4094 case T_CHAR:
4095 box->char_field_put(value_offset(type), value->c);
4096 break;
4097 case T_FLOAT:
4098 box->float_field_put(value_offset(type), value->f);
4099 break;
4100 case T_DOUBLE:
4101 box->double_field_put(value_offset(type), value->d);
4102 break;
4103 case T_BYTE:
4104 box->byte_field_put(value_offset(type), value->b);
4105 break;
4106 case T_SHORT:
4107 box->short_field_put(value_offset(type), value->s);
4108 break;
4109 case T_INT:
4110 box->int_field_put(value_offset(type), value->i);
4111 break;
4112 case T_LONG:
4113 box->long_field_put(value_offset(type), value->j);
4114 break;
4115 default:
4116 return T_ILLEGAL;
4117 } // end switch
4118 return type;
4119 }
4120
4121
4122 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) {
4123 switch (type) {
4124 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break;
4125 case T_CHAR: st->print("%d", value->c); break;
4126 case T_BYTE: st->print("%d", value->b); break;
4127 case T_SHORT: st->print("%d", value->s); break;
4128 case T_INT: st->print("%d", value->i); break;
4129 case T_LONG: st->print(JLONG_FORMAT, value->j); break;
4130 case T_FLOAT: st->print("%f", value->f); break;
4131 case T_DOUBLE: st->print("%lf", value->d); break;
4132 default: st->print("type %d?", type); break;
4133 }
4321 #define ABIDescriptor_FIELDS_DO(macro) \
4322 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4323 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4324 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \
4325 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \
4326 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \
4327 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \
4328 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false);
4329
4330 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() {
4331 InstanceKlass* k = vmClasses::ABIDescriptor_klass();
4332 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4333 }
4334
4335 #if INCLUDE_CDS
4336 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) {
4337 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4338 }
4339 #endif
4340
4341 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) {
4342 return oop_cast<refArrayOop>(entry->obj_field(_inputStorage_offset));
4343 }
4344
4345 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) {
4346 return oop_cast<refArrayOop>(entry->obj_field(_outputStorage_offset));
4347 }
4348
4349 refArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) {
4350 return oop_cast<refArrayOop>(entry->obj_field(_volatileStorage_offset));
4351 }
4352
4353 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) {
4354 return entry->int_field(_stackAlignment_offset);
4355 }
4356
4357 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) {
4358 return entry->int_field(_shadowSpace_offset);
4359 }
4360
4361 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) {
4362 return entry->obj_field(_scratch1_offset);
4363 }
4364
4365 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) {
4366 return entry->obj_field(_scratch2_offset);
4367 }
4368
4369 int jdk_internal_foreign_abi_VMStorage::_type_offset;
4370 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset;
4413
4414 #define CallConv_FIELDS_DO(macro) \
4415 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4416 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \
4417
4418 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) {
4419 return obj != nullptr && is_subclass(obj->klass());
4420 }
4421
4422 void jdk_internal_foreign_abi_CallConv::compute_offsets() {
4423 InstanceKlass* k = vmClasses::CallConv_klass();
4424 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4425 }
4426
4427 #if INCLUDE_CDS
4428 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) {
4429 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4430 }
4431 #endif
4432
4433 refArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) {
4434 return oop_cast<refArrayOop>(entry->obj_field(_argRegs_offset));
4435 }
4436
4437 refArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) {
4438 return oop_cast<refArrayOop>(entry->obj_field(_retRegs_offset));
4439 }
4440
4441 oop java_lang_invoke_MethodHandle::type(oop mh) {
4442 return mh->obj_field(_type_offset);
4443 }
4444
4445 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) {
4446 mh->obj_field_put(_type_offset, mtype);
4447 }
4448
4449 oop java_lang_invoke_MethodHandle::form(oop mh) {
4450 assert(_form_offset != 0, "");
4451 return mh->obj_field(_form_offset);
4452 }
4453
4454 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) {
4455 assert(_form_offset != 0, "");
4456 mh->obj_field_put(_form_offset, lform);
4457 }
4458
4481 oop java_lang_invoke_MemberName::type(oop mname) {
4482 assert(is_instance(mname), "wrong type");
4483 return mname->obj_field(_type_offset);
4484 }
4485
4486 void java_lang_invoke_MemberName::set_type(oop mname, oop type) {
4487 assert(is_instance(mname), "wrong type");
4488 mname->obj_field_put(_type_offset, type);
4489 }
4490
4491 int java_lang_invoke_MemberName::flags(oop mname) {
4492 assert(is_instance(mname), "wrong type");
4493 return mname->int_field(_flags_offset);
4494 }
4495
4496 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) {
4497 assert(is_instance(mname), "wrong type");
4498 mname->int_field_put(_flags_offset, flags);
4499 }
4500
4501 // Return vmtarget from ResolvedMethodName method field through indirection
4502 Method* java_lang_invoke_MemberName::vmtarget(oop mname) {
4503 assert(is_instance(mname), "wrong type");
4504 oop method = mname->obj_field(_method_offset);
4505 return method == nullptr ? nullptr : java_lang_invoke_ResolvedMethodName::vmtarget(method);
4506 }
4507
4508 bool java_lang_invoke_MemberName::is_method(oop mname) {
4509 assert(is_instance(mname), "must be MemberName");
4510 return (flags(mname) & (MN_IS_METHOD | MN_IS_OBJECT_CONSTRUCTOR)) > 0;
4511 }
4512
4513 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) {
4514 assert(is_instance(mname), "wrong type");
4515 mname->obj_field_put(_method_offset, resolved_method);
4516 }
4517
4518 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) {
4519 assert(is_instance(mname), "wrong type");
4520 return (intptr_t) mname->address_field(_vmindex_offset);
4521 }
4522
4523 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) {
4524 assert(is_instance(mname), "wrong type");
4525 mname->address_field_put(_vmindex_offset, (address) index);
4526 }
4527
4528
4529 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) {
4530 assert(is_instance(resolved_method), "wrong type");
4594 int java_lang_invoke_MethodType::_rtype_offset;
4595 int java_lang_invoke_MethodType::_ptypes_offset;
4596
4597 #define METHODTYPE_FIELDS_DO(macro) \
4598 macro(_rtype_offset, k, "rtype", class_signature, false); \
4599 macro(_ptypes_offset, k, "ptypes", class_array_signature, false)
4600
4601 void java_lang_invoke_MethodType::compute_offsets() {
4602 InstanceKlass* k = vmClasses::MethodType_klass();
4603 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
4604 }
4605
4606 #if INCLUDE_CDS
4607 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) {
4608 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
4609 }
4610 #endif
4611
4612 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) {
4613 st->print("(");
4614 refArrayOop pts = ptypes(mt);
4615 if (pts != nullptr) {
4616 for (int i = 0, limit = pts->length(); i < limit; i++) {
4617 java_lang_Class::print_signature(pts->obj_at(i), st);
4618 }
4619 } else {
4620 st->print("null");
4621 }
4622 st->print(")");
4623 oop rt = rtype(mt);
4624 if (rt != nullptr) {
4625 java_lang_Class::print_signature(rt, st);
4626 } else {
4627 st->print("null");
4628 }
4629 }
4630
4631 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) {
4632 ResourceMark rm;
4633 stringStream buffer(128);
4634 print_signature(mt, &buffer);
4645
4646 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) {
4647 if (mt1 == mt2)
4648 return true;
4649 if (rtype(mt1) != rtype(mt2))
4650 return false;
4651 if (ptype_count(mt1) != ptype_count(mt2))
4652 return false;
4653 for (int i = ptype_count(mt1) - 1; i >= 0; i--) {
4654 if (ptype(mt1, i) != ptype(mt2, i))
4655 return false;
4656 }
4657 return true;
4658 }
4659
4660 oop java_lang_invoke_MethodType::rtype(oop mt) {
4661 assert(is_instance(mt), "must be a MethodType");
4662 return mt->obj_field(_rtype_offset);
4663 }
4664
4665 refArrayOop java_lang_invoke_MethodType::ptypes(oop mt) {
4666 assert(is_instance(mt), "must be a MethodType");
4667 return (refArrayOop) mt->obj_field(_ptypes_offset);
4668 }
4669
4670 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) {
4671 return ptypes(mt)->obj_at(idx);
4672 }
4673
4674 int java_lang_invoke_MethodType::ptype_count(oop mt) {
4675 return ptypes(mt)->length();
4676 }
4677
4678 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) {
4679 refArrayOop pts = ptypes(mt);
4680 int count = pts->length();
4681 int slots = 0;
4682 for (int i = 0; i < count; i++) {
4683 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i));
4684 slots += type2size[bt];
4685 }
4686 return slots;
4687 }
4688
4689 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) {
4690 BasicType bt = java_lang_Class::as_BasicType(rtype(mt));
4691 return type2size[bt];
4692 }
4693
4694
4695 // Support for java_lang_invoke_CallSite
4696
4697 int java_lang_invoke_CallSite::_target_offset;
4698 int java_lang_invoke_CallSite::_vmdependencies_offset;
4699 int java_lang_invoke_CallSite::_last_cleanup_offset;
5084 }
5085
5086 bool vector_VectorPayload::is_instance(oop obj) {
5087 return obj != nullptr && is_subclass(obj->klass());
5088 }
5089
5090 int java_lang_Integer_IntegerCache::_static_cache_offset;
5091 int java_lang_Long_LongCache::_static_cache_offset;
5092 int java_lang_Character_CharacterCache::_static_cache_offset;
5093 int java_lang_Short_ShortCache::_static_cache_offset;
5094 int java_lang_Byte_ByteCache::_static_cache_offset;
5095
5096 #define INTEGER_CACHE_FIELDS_DO(macro) \
5097 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true)
5098
5099 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) {
5100 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5101 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5102 }
5103
5104 refArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) {
5105 oop base = ik->static_field_base_raw();
5106 return refArrayOop(base->obj_field(_static_cache_offset));
5107 }
5108
5109 Symbol* java_lang_Integer_IntegerCache::symbol() {
5110 return vmSymbols::java_lang_Integer_IntegerCache();
5111 }
5112
5113 #if INCLUDE_CDS
5114 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) {
5115 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5116 }
5117 #endif
5118 #undef INTEGER_CACHE_FIELDS_DO
5119
5120 #define LONG_CACHE_FIELDS_DO(macro) \
5121 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true)
5122
5123 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) {
5124 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5125 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5126 }
5127
5128 refArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) {
5129 oop base = ik->static_field_base_raw();
5130 return refArrayOop(base->obj_field(_static_cache_offset));
5131 }
5132
5133 Symbol* java_lang_Long_LongCache::symbol() {
5134 return vmSymbols::java_lang_Long_LongCache();
5135 }
5136
5137 #if INCLUDE_CDS
5138 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) {
5139 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5140 }
5141 #endif
5142 #undef LONG_CACHE_FIELDS_DO
5143
5144 #define CHARACTER_CACHE_FIELDS_DO(macro) \
5145 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true)
5146
5147 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) {
5148 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5149 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5150 }
5151
5152 refArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) {
5153 oop base = ik->static_field_base_raw();
5154 return refArrayOop(base->obj_field(_static_cache_offset));
5155 }
5156
5157 Symbol* java_lang_Character_CharacterCache::symbol() {
5158 return vmSymbols::java_lang_Character_CharacterCache();
5159 }
5160
5161 #if INCLUDE_CDS
5162 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) {
5163 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5164 }
5165 #endif
5166 #undef CHARACTER_CACHE_FIELDS_DO
5167
5168 #define SHORT_CACHE_FIELDS_DO(macro) \
5169 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true)
5170
5171 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) {
5172 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5173 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5174 }
5175
5176 refArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) {
5177 oop base = ik->static_field_base_raw();
5178 return refArrayOop(base->obj_field(_static_cache_offset));
5179 }
5180
5181 Symbol* java_lang_Short_ShortCache::symbol() {
5182 return vmSymbols::java_lang_Short_ShortCache();
5183 }
5184
5185 #if INCLUDE_CDS
5186 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) {
5187 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5188 }
5189 #endif
5190 #undef SHORT_CACHE_FIELDS_DO
5191
5192 #define BYTE_CACHE_FIELDS_DO(macro) \
5193 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true)
5194
5195 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) {
5196 guarantee(k != nullptr && k->is_initialized(), "must be loaded and initialized");
5197 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET);
5198 }
5199
5200 refArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) {
5201 oop base = ik->static_field_base_raw();
5202 return refArrayOop(base->obj_field(_static_cache_offset));
5203 }
5204
5205 Symbol* java_lang_Byte_ByteCache::symbol() {
5206 return vmSymbols::java_lang_Byte_ByteCache();
5207 }
5208
5209 #if INCLUDE_CDS
5210 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) {
5211 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET);
5212 }
5213 #endif
5214 #undef BYTE_CACHE_FIELDS_DO
5215
5216 int java_lang_Boolean::_static_TRUE_offset;
5217 int java_lang_Boolean::_static_FALSE_offset;
5218
5219 #define BOOLEAN_FIELDS_DO(macro) \
5220 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \
5221 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true)
5222
5437 if (!ik->find_local_field(f_name, f_sig, &fd)) {
5438 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name);
5439 return false;
5440 }
5441 if (fd.is_static()) {
5442 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name);
5443 return false;
5444 }
5445 if (fd.offset() == deserialized_offset ) {
5446 return true;
5447 } else {
5448 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.",
5449 klass_name, field_name, deserialized_offset, fd.offset());
5450 return false;
5451 }
5452 }
5453
5454 void JavaClasses::check_offsets() {
5455 bool valid = true;
5456
5457 #define CHECK_OFFSET(klass_name, type, field_sig) \
5458 valid &= check_offset(klass_name, java_lang_boxing_object::value_offset(type), "value", field_sig)
5459
5460 CHECK_OFFSET("java/lang/Boolean", T_BOOLEAN, "Z");
5461 CHECK_OFFSET("java/lang/Character", T_CHAR, "C");
5462 CHECK_OFFSET("java/lang/Float", T_FLOAT, "F");
5463 CHECK_OFFSET("java/lang/Double", T_DOUBLE, "D");
5464 CHECK_OFFSET("java/lang/Byte", T_BYTE, "B");
5465 CHECK_OFFSET("java/lang/Short", T_SHORT, "S");
5466 CHECK_OFFSET("java/lang/Integer", T_INT, "I");
5467 CHECK_OFFSET("java/lang/Long", T_LONG, "J");
5468
5469 if (!valid) vm_exit_during_initialization("Field offset verification failed");
5470 }
5471
5472 #endif // PRODUCT
5473
5474 int InjectedField::compute_offset() {
5475 InstanceKlass* ik = klass();
5476 for (AllFieldStream fs(ik); !fs.done(); fs.next()) {
5477 if (!may_be_java && !fs.field_flags().is_injected()) {
5478 // Only look at injected fields
5479 continue;
5480 }
5481 if (fs.name() == name() && fs.signature() == signature()) {
5482 return fs.offset();
5483 }
5484 }
5485 ResourceMark rm;
5486 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)" : "");
5487 #ifndef PRODUCT
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