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