1 /* 2 * Copyright (c) 1997, 2022, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "cds/archiveBuilder.hpp" 27 #include "cds/archiveHeapLoader.hpp" 28 #include "cds/heapShared.hpp" 29 #include "cds/metaspaceShared.hpp" 30 #include "classfile/altHashing.hpp" 31 #include "classfile/classLoaderData.inline.hpp" 32 #include "classfile/javaClasses.inline.hpp" 33 #include "classfile/javaClassesImpl.hpp" 34 #include "classfile/javaThreadStatus.hpp" 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/fieldStreams.inline.hpp" 54 #include "oops/instanceKlass.inline.hpp" 55 #include "oops/instanceMirrorKlass.hpp" 56 #include "oops/klass.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/oopCast.inline.hpp" 62 #include "oops/oop.inline.hpp" 63 #include "oops/symbol.hpp" 64 #include "oops/recordComponent.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/reflectionUtils.hpp" 82 #include "runtime/safepoint.hpp" 83 #include "runtime/safepointVerifiers.hpp" 84 #include "runtime/threadSMR.hpp" 85 #include "runtime/vframe.inline.hpp" 86 #include "runtime/vm_version.hpp" 87 #include "utilities/align.hpp" 88 #include "utilities/growableArray.hpp" 89 #include "utilities/preserveException.hpp" 90 #include "utilities/utf8.hpp" 91 #if INCLUDE_JVMCI 92 #include "jvmci/jvmciJavaClasses.hpp" 93 #endif 94 95 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \ 96 { VM_CLASS_ID(klass), VM_SYMBOL_ENUM_NAME(name##_name), VM_SYMBOL_ENUM_NAME(signature), may_be_java }, 97 98 InjectedField JavaClasses::_injected_fields[] = { 99 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD) 100 }; 101 102 // Register native methods of Object 103 void java_lang_Object::register_natives(TRAPS) { 104 InstanceKlass* obj = vmClasses::Object_klass(); 105 Method::register_native(obj, vmSymbols::hashCode_name(), 106 vmSymbols::void_int_signature(), (address) &JVM_IHashCode, CHECK); 107 Method::register_native(obj, vmSymbols::wait_name(), 108 vmSymbols::long_void_signature(), (address) &JVM_MonitorWait, CHECK); 109 Method::register_native(obj, vmSymbols::notify_name(), 110 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotify, CHECK); 111 Method::register_native(obj, vmSymbols::notifyAll_name(), 112 vmSymbols::void_method_signature(), (address) &JVM_MonitorNotifyAll, CHECK); 113 Method::register_native(obj, vmSymbols::clone_name(), 114 vmSymbols::void_object_signature(), (address) &JVM_Clone, THREAD); 115 } 116 117 int JavaClasses::compute_injected_offset(InjectedFieldID id) { 118 return _injected_fields[(int)id].compute_offset(); 119 } 120 121 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) { 122 *field_count = 0; 123 124 vmSymbolID sid = vmSymbols::find_sid(class_name); 125 if (sid == vmSymbolID::NO_SID) { 126 // Only well known classes can inject fields 127 return NULL; 128 } 129 130 int count = 0; 131 int start = -1; 132 133 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \ 134 if (sid == VM_SYMBOL_ENUM_NAME(klass)) { \ 135 count++; \ 136 if (start == -1) { \ 137 start = (int)InjectedFieldID::klass##_##name##_enum; \ 138 } \ 139 } 140 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD); 141 #undef LOOKUP_INJECTED_FIELD 142 143 if (start != -1) { 144 *field_count = count; 145 return _injected_fields + start; 146 } 147 return NULL; 148 } 149 150 151 // Helpful routine for computing field offsets at run time rather than hardcoding them 152 // Finds local fields only, including static fields. Static field offsets are from the 153 // beginning of the mirror. 154 void JavaClasses::compute_offset(int &dest_offset, 155 InstanceKlass* ik, Symbol* name_symbol, Symbol* signature_symbol, 156 bool is_static) { 157 fieldDescriptor fd; 158 if (ik == NULL) { 159 ResourceMark rm; 160 log_error(class)("Mismatch JDK version for field: %s type: %s", name_symbol->as_C_string(), signature_symbol->as_C_string()); 161 vm_exit_during_initialization("Invalid layout of well-known class"); 162 } 163 164 if (!ik->find_local_field(name_symbol, signature_symbol, &fd) || fd.is_static() != is_static) { 165 ResourceMark rm; 166 log_error(class)("Invalid layout of %s field: %s type: %s", ik->external_name(), 167 name_symbol->as_C_string(), signature_symbol->as_C_string()); 168 #ifndef PRODUCT 169 // Prints all fields and offsets 170 Log(class) lt; 171 LogStream ls(lt.error()); 172 ik->print_on(&ls); 173 #endif //PRODUCT 174 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class"); 175 } 176 dest_offset = fd.offset(); 177 } 178 179 // Overloading to pass name as a string. 180 void JavaClasses::compute_offset(int& dest_offset, InstanceKlass* ik, 181 const char* name_string, Symbol* signature_symbol, 182 bool is_static) { 183 TempNewSymbol name = SymbolTable::probe(name_string, (int)strlen(name_string)); 184 if (name == NULL) { 185 ResourceMark rm; 186 log_error(class)("Name %s should be in the SymbolTable since its class is loaded", name_string); 187 vm_exit_during_initialization("Invalid layout of well-known class", ik->external_name()); 188 } 189 compute_offset(dest_offset, ik, name, signature_symbol, is_static); 190 } 191 192 // java_lang_String 193 194 int java_lang_String::_value_offset; 195 int java_lang_String::_hash_offset; 196 int java_lang_String::_hashIsZero_offset; 197 int java_lang_String::_coder_offset; 198 int java_lang_String::_flags_offset; 199 200 bool java_lang_String::_initialized; 201 202 203 bool java_lang_String::test_and_set_flag(oop java_string, uint8_t flag_mask) { 204 uint8_t* addr = flags_addr(java_string); 205 uint8_t value = Atomic::load(addr); 206 while ((value & flag_mask) == 0) { 207 uint8_t old_value = value; 208 value |= flag_mask; 209 value = Atomic::cmpxchg(addr, old_value, value); 210 if (value == old_value) return false; // Flag bit changed from 0 to 1. 211 } 212 return true; // Flag bit is already 1. 213 } 214 215 #define STRING_FIELDS_DO(macro) \ 216 macro(_value_offset, k, vmSymbols::value_name(), byte_array_signature, false); \ 217 macro(_hash_offset, k, "hash", int_signature, false); \ 218 macro(_hashIsZero_offset, k, "hashIsZero", bool_signature, false); \ 219 macro(_coder_offset, k, "coder", byte_signature, false); 220 221 void java_lang_String::compute_offsets() { 222 if (_initialized) { 223 return; 224 } 225 226 InstanceKlass* k = vmClasses::String_klass(); 227 STRING_FIELDS_DO(FIELD_COMPUTE_OFFSET); 228 STRING_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 229 230 _initialized = true; 231 } 232 233 #if INCLUDE_CDS 234 void java_lang_String::serialize_offsets(SerializeClosure* f) { 235 STRING_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 236 STRING_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); 237 f->do_bool(&_initialized); 238 } 239 #endif 240 241 class CompactStringsFixup : public FieldClosure { 242 private: 243 bool _value; 244 245 public: 246 CompactStringsFixup(bool value) : _value(value) {} 247 248 void do_field(fieldDescriptor* fd) { 249 if (fd->name() == vmSymbols::compact_strings_name()) { 250 oop mirror = fd->field_holder()->java_mirror(); 251 assert(fd->field_holder() == vmClasses::String_klass(), "Should be String"); 252 assert(mirror != NULL, "String must have mirror already"); 253 mirror->bool_field_put(fd->offset(), _value); 254 } 255 } 256 }; 257 258 void java_lang_String::set_compact_strings(bool value) { 259 CompactStringsFixup fix(value); 260 vmClasses::String_klass()->do_local_static_fields(&fix); 261 } 262 263 Handle java_lang_String::basic_create(int length, bool is_latin1, TRAPS) { 264 assert(_initialized, "Must be initialized"); 265 assert(CompactStrings || !is_latin1, "Must be UTF16 without CompactStrings"); 266 267 // Create the String object first, so there's a chance that the String 268 // and the char array it points to end up in the same cache line. 269 oop obj; 270 obj = vmClasses::String_klass()->allocate_instance(CHECK_NH); 271 272 // Create the char array. The String object must be handlized here 273 // because GC can happen as a result of the allocation attempt. 274 Handle h_obj(THREAD, obj); 275 int arr_length = is_latin1 ? length : length << 1; // 2 bytes per UTF16. 276 typeArrayOop buffer = oopFactory::new_byteArray(arr_length, CHECK_NH);; 277 278 // Point the String at the char array 279 obj = h_obj(); 280 set_value(obj, buffer); 281 // No need to zero the offset, allocation zero'ed the entire String object 282 set_coder(obj, is_latin1 ? CODER_LATIN1 : CODER_UTF16); 283 return h_obj; 284 } 285 286 Handle java_lang_String::create_from_unicode(const jchar* unicode, int length, TRAPS) { 287 bool is_latin1 = CompactStrings && UNICODE::is_latin1(unicode, length); 288 Handle h_obj = basic_create(length, is_latin1, CHECK_NH); 289 typeArrayOop buffer = value(h_obj()); 290 assert(TypeArrayKlass::cast(buffer->klass())->element_type() == T_BYTE, "only byte[]"); 291 if (is_latin1) { 292 for (int index = 0; index < length; index++) { 293 buffer->byte_at_put(index, (jbyte)unicode[index]); 294 } 295 } else { 296 for (int index = 0; index < length; index++) { 297 buffer->char_at_put(index, unicode[index]); 298 } 299 } 300 301 #ifdef ASSERT 302 { 303 ResourceMark rm; 304 char* expected = UNICODE::as_utf8(unicode, length); 305 char* actual = as_utf8_string(h_obj()); 306 if (strcmp(expected, actual) != 0) { 307 fatal("Unicode conversion failure: %s --> %s", expected, actual); 308 } 309 } 310 #endif 311 312 return h_obj; 313 } 314 315 oop java_lang_String::create_oop_from_unicode(const jchar* unicode, int length, TRAPS) { 316 Handle h_obj = create_from_unicode(unicode, length, CHECK_NULL); 317 return h_obj(); 318 } 319 320 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) { 321 if (utf8_str == NULL) { 322 return Handle(); 323 } 324 bool has_multibyte, is_latin1; 325 int length = UTF8::unicode_length(utf8_str, is_latin1, has_multibyte); 326 if (!CompactStrings) { 327 has_multibyte = true; 328 is_latin1 = false; 329 } 330 331 Handle h_obj = basic_create(length, is_latin1, CHECK_NH); 332 if (length > 0) { 333 if (!has_multibyte) { 334 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str); 335 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length); 336 } else if (is_latin1) { 337 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length); 338 } else { 339 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length); 340 } 341 } 342 343 #ifdef ASSERT 344 // This check is too strict when the input string is not a valid UTF8. 345 // For example, it may be created with arbitrary content via jni_NewStringUTF. 346 if (UTF8::is_legal_utf8((const unsigned char*)utf8_str, (int)strlen(utf8_str), false)) { 347 ResourceMark rm; 348 const char* expected = utf8_str; 349 char* actual = as_utf8_string(h_obj()); 350 if (strcmp(expected, actual) != 0) { 351 fatal("String conversion failure: %s --> %s", expected, actual); 352 } 353 } 354 #endif 355 356 return h_obj; 357 } 358 359 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) { 360 Handle h_obj = create_from_str(utf8_str, CHECK_NULL); 361 return h_obj(); 362 } 363 364 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) { 365 const char* utf8_str = (char*)symbol->bytes(); 366 int utf8_len = symbol->utf8_length(); 367 368 bool has_multibyte, is_latin1; 369 int length = UTF8::unicode_length(utf8_str, utf8_len, is_latin1, has_multibyte); 370 if (!CompactStrings) { 371 has_multibyte = true; 372 is_latin1 = false; 373 } 374 375 Handle h_obj = basic_create(length, is_latin1, CHECK_NH); 376 if (length > 0) { 377 if (!has_multibyte) { 378 const jbyte* src = reinterpret_cast<const jbyte*>(utf8_str); 379 ArrayAccess<>::arraycopy_from_native(src, value(h_obj()), typeArrayOopDesc::element_offset<jbyte>(0), length); 380 } else if (is_latin1) { 381 UTF8::convert_to_unicode(utf8_str, value(h_obj())->byte_at_addr(0), length); 382 } else { 383 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length); 384 } 385 } 386 387 #ifdef ASSERT 388 { 389 ResourceMark rm; 390 const char* expected = symbol->as_utf8(); 391 char* actual = as_utf8_string(h_obj()); 392 if (strncmp(expected, actual, utf8_len) != 0) { 393 fatal("Symbol conversion failure: %s --> %s", expected, actual); 394 } 395 } 396 #endif 397 398 return h_obj; 399 } 400 401 // Converts a C string to a Java String based on current encoding 402 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) { 403 assert(str != NULL, "bad arguments"); 404 405 typedef jstring (JNICALL *to_java_string_fn_t)(JNIEnv*, const char *); 406 static to_java_string_fn_t _to_java_string_fn = NULL; 407 408 if (_to_java_string_fn == NULL) { 409 void *lib_handle = os::native_java_library(); 410 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform")); 411 #if defined(_WIN32) && !defined(_WIN64) 412 if (_to_java_string_fn == NULL) { 413 // On 32 bit Windows, also try __stdcall decorated name 414 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "_JNU_NewStringPlatform@8")); 415 } 416 #endif 417 if (_to_java_string_fn == NULL) { 418 fatal("JNU_NewStringPlatform missing"); 419 } 420 } 421 422 jstring js = NULL; 423 { 424 JavaThread* thread = THREAD; 425 HandleMark hm(thread); 426 ThreadToNativeFromVM ttn(thread); 427 js = (_to_java_string_fn)(thread->jni_environment(), str); 428 } 429 430 Handle native_platform_string(THREAD, JNIHandles::resolve(js)); 431 JNIHandles::destroy_local(js); // destroy local JNIHandle. 432 return native_platform_string; 433 } 434 435 // Converts a Java String to a native C string that can be used for 436 // native OS calls. 437 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) { 438 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*); 439 static to_platform_string_fn_t _to_platform_string_fn = NULL; 440 441 if (_to_platform_string_fn == NULL) { 442 void *lib_handle = os::native_java_library(); 443 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars")); 444 if (_to_platform_string_fn == NULL) { 445 fatal("GetStringPlatformChars missing"); 446 } 447 } 448 449 char *native_platform_string; 450 jstring js; 451 { JavaThread* thread = THREAD; 452 js = (jstring) JNIHandles::make_local(thread, java_string()); 453 HandleMark hm(thread); 454 ThreadToNativeFromVM ttn(thread); 455 JNIEnv *env = thread->jni_environment(); 456 bool is_copy; 457 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy); 458 assert(is_copy == JNI_TRUE, "is_copy value changed"); 459 } 460 461 // Uses a store barrier and therefore needs to be in vm state 462 JNIHandles::destroy_local(js); 463 464 return native_platform_string; 465 } 466 467 Handle java_lang_String::externalize_classname(Symbol* java_name, TRAPS) { 468 ResourceMark rm(THREAD); 469 return create_from_str(java_name->as_klass_external_name(), THREAD); 470 } 471 472 jchar* java_lang_String::as_unicode_string(oop java_string, int& length, TRAPS) { 473 jchar* result = as_unicode_string_or_null(java_string, length); 474 if (result == NULL) { 475 THROW_MSG_0(vmSymbols::java_lang_OutOfMemoryError(), "could not allocate Unicode string"); 476 } 477 return result; 478 } 479 480 jchar* java_lang_String::as_unicode_string_or_null(oop java_string, int& length) { 481 typeArrayOop value = java_lang_String::value(java_string); 482 length = java_lang_String::length(java_string, value); 483 bool is_latin1 = java_lang_String::is_latin1(java_string); 484 485 jchar* result = NEW_RESOURCE_ARRAY_RETURN_NULL(jchar, length); 486 if (result != NULL) { 487 if (!is_latin1) { 488 for (int index = 0; index < length; index++) { 489 result[index] = value->char_at(index); 490 } 491 } else { 492 for (int index = 0; index < length; index++) { 493 result[index] = ((jchar) value->byte_at(index)) & 0xff; 494 } 495 } 496 } 497 return result; 498 } 499 500 inline unsigned int java_lang_String::hash_code_impl(oop java_string, bool update) { 501 // The hash and hashIsZero fields are subject to a benign data race, 502 // making it crucial to ensure that any observable result of the 503 // calculation in this method stays correct under any possible read of 504 // these fields. Necessary restrictions to allow this to be correct 505 // without explicit memory fences or similar concurrency primitives is 506 // that we can ever only write to one of these two fields for a given 507 // String instance, and that the computation is idempotent and derived 508 // from immutable state 509 assert(_initialized && (_hash_offset > 0) && (_hashIsZero_offset > 0), "Must be initialized"); 510 if (java_lang_String::hash_is_set(java_string)) { 511 return java_string->int_field(_hash_offset); 512 } 513 514 typeArrayOop value = java_lang_String::value(java_string); 515 int length = java_lang_String::length(java_string, value); 516 bool is_latin1 = java_lang_String::is_latin1(java_string); 517 518 unsigned int hash = 0; 519 if (length > 0) { 520 if (is_latin1) { 521 hash = java_lang_String::hash_code(value->byte_at_addr(0), length); 522 } else { 523 hash = java_lang_String::hash_code(value->char_at_addr(0), length); 524 } 525 } 526 527 if (update) { 528 if (hash != 0) { 529 java_string->int_field_put(_hash_offset, hash); 530 } else { 531 java_string->bool_field_put(_hashIsZero_offset, true); 532 } 533 } 534 return hash; 535 } 536 537 unsigned int java_lang_String::hash_code(oop java_string) { 538 return hash_code_impl(java_string, /*update=*/true); 539 } 540 541 unsigned int java_lang_String::hash_code_noupdate(oop java_string) { 542 return hash_code_impl(java_string, /*update=*/false); 543 } 544 545 546 char* java_lang_String::as_quoted_ascii(oop java_string) { 547 typeArrayOop value = java_lang_String::value(java_string); 548 int length = java_lang_String::length(java_string, value); 549 bool is_latin1 = java_lang_String::is_latin1(java_string); 550 551 if (length == 0) return NULL; 552 553 char* result; 554 int result_length; 555 if (!is_latin1) { 556 jchar* base = value->char_at_addr(0); 557 result_length = UNICODE::quoted_ascii_length(base, length) + 1; 558 result = NEW_RESOURCE_ARRAY(char, result_length); 559 UNICODE::as_quoted_ascii(base, length, result, result_length); 560 } else { 561 jbyte* base = value->byte_at_addr(0); 562 result_length = UNICODE::quoted_ascii_length(base, length) + 1; 563 result = NEW_RESOURCE_ARRAY(char, result_length); 564 UNICODE::as_quoted_ascii(base, length, result, result_length); 565 } 566 assert(result_length >= length + 1, "must not be shorter"); 567 assert(result_length == (int)strlen(result) + 1, "must match"); 568 return result; 569 } 570 571 Symbol* java_lang_String::as_symbol(oop java_string) { 572 typeArrayOop value = java_lang_String::value(java_string); 573 int length = java_lang_String::length(java_string, value); 574 bool is_latin1 = java_lang_String::is_latin1(java_string); 575 if (!is_latin1) { 576 jchar* base = (length == 0) ? NULL : value->char_at_addr(0); 577 Symbol* sym = SymbolTable::new_symbol(base, length); 578 return sym; 579 } else { 580 ResourceMark rm; 581 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0); 582 const char* base = UNICODE::as_utf8(position, length); 583 Symbol* sym = SymbolTable::new_symbol(base, length); 584 return sym; 585 } 586 } 587 588 Symbol* java_lang_String::as_symbol_or_null(oop java_string) { 589 typeArrayOop value = java_lang_String::value(java_string); 590 int length = java_lang_String::length(java_string, value); 591 bool is_latin1 = java_lang_String::is_latin1(java_string); 592 if (!is_latin1) { 593 jchar* base = (length == 0) ? NULL : value->char_at_addr(0); 594 return SymbolTable::probe_unicode(base, length); 595 } else { 596 ResourceMark rm; 597 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0); 598 const char* base = UNICODE::as_utf8(position, length); 599 return SymbolTable::probe(base, length); 600 } 601 } 602 603 int java_lang_String::utf8_length(oop java_string, typeArrayOop value) { 604 assert(value_equals(value, java_lang_String::value(java_string)), 605 "value must be same as java_lang_String::value(java_string)"); 606 int length = java_lang_String::length(java_string, value); 607 if (length == 0) { 608 return 0; 609 } 610 if (!java_lang_String::is_latin1(java_string)) { 611 return UNICODE::utf8_length(value->char_at_addr(0), length); 612 } else { 613 return UNICODE::utf8_length(value->byte_at_addr(0), length); 614 } 615 } 616 617 int java_lang_String::utf8_length(oop java_string) { 618 typeArrayOop value = java_lang_String::value(java_string); 619 return utf8_length(java_string, value); 620 } 621 622 char* java_lang_String::as_utf8_string(oop java_string) { 623 int length; 624 return as_utf8_string(java_string, length); 625 } 626 627 char* java_lang_String::as_utf8_string(oop java_string, int& length) { 628 typeArrayOop value = java_lang_String::value(java_string); 629 length = java_lang_String::length(java_string, value); 630 bool is_latin1 = java_lang_String::is_latin1(java_string); 631 if (!is_latin1) { 632 jchar* position = (length == 0) ? NULL : value->char_at_addr(0); 633 return UNICODE::as_utf8(position, length); 634 } else { 635 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0); 636 return UNICODE::as_utf8(position, length); 637 } 638 } 639 640 // Uses a provided buffer if it's sufficiently large, otherwise allocates 641 // a resource array to fit 642 char* java_lang_String::as_utf8_string_full(oop java_string, char* buf, int buflen, int& utf8_len) { 643 typeArrayOop value = java_lang_String::value(java_string); 644 int len = java_lang_String::length(java_string, value); 645 bool is_latin1 = java_lang_String::is_latin1(java_string); 646 if (!is_latin1) { 647 jchar *position = (len == 0) ? NULL : value->char_at_addr(0); 648 utf8_len = UNICODE::utf8_length(position, len); 649 if (utf8_len >= buflen) { 650 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1); 651 } 652 return UNICODE::as_utf8(position, len, buf, utf8_len + 1); 653 } else { 654 jbyte *position = (len == 0) ? NULL : value->byte_at_addr(0); 655 utf8_len = UNICODE::utf8_length(position, len); 656 if (utf8_len >= buflen) { 657 buf = NEW_RESOURCE_ARRAY(char, utf8_len + 1); 658 } 659 return UNICODE::as_utf8(position, len, buf, utf8_len + 1); 660 } 661 } 662 663 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, char* buf, int buflen) { 664 assert(value_equals(value, java_lang_String::value(java_string)), 665 "value must be same as java_lang_String::value(java_string)"); 666 int length = java_lang_String::length(java_string, value); 667 bool is_latin1 = java_lang_String::is_latin1(java_string); 668 if (!is_latin1) { 669 jchar* position = (length == 0) ? NULL : value->char_at_addr(0); 670 return UNICODE::as_utf8(position, length, buf, buflen); 671 } else { 672 jbyte* position = (length == 0) ? NULL : value->byte_at_addr(0); 673 return UNICODE::as_utf8(position, length, buf, buflen); 674 } 675 } 676 677 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) { 678 typeArrayOop value = java_lang_String::value(java_string); 679 return as_utf8_string(java_string, value, buf, buflen); 680 } 681 682 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) { 683 typeArrayOop value = java_lang_String::value(java_string); 684 bool is_latin1 = java_lang_String::is_latin1(java_string); 685 assert(start + len <= java_lang_String::length(java_string), "just checking"); 686 if (!is_latin1) { 687 jchar* position = value->char_at_addr(start); 688 return UNICODE::as_utf8(position, len); 689 } else { 690 jbyte* position = value->byte_at_addr(start); 691 return UNICODE::as_utf8(position, len); 692 } 693 } 694 695 char* java_lang_String::as_utf8_string(oop java_string, typeArrayOop value, int start, int len, char* buf, int buflen) { 696 assert(value_equals(value, java_lang_String::value(java_string)), 697 "value must be same as java_lang_String::value(java_string)"); 698 assert(start + len <= java_lang_String::length(java_string), "just checking"); 699 bool is_latin1 = java_lang_String::is_latin1(java_string); 700 if (!is_latin1) { 701 jchar* position = value->char_at_addr(start); 702 return UNICODE::as_utf8(position, len, buf, buflen); 703 } else { 704 jbyte* position = value->byte_at_addr(start); 705 return UNICODE::as_utf8(position, len, buf, buflen); 706 } 707 } 708 709 bool java_lang_String::equals(oop java_string, const jchar* chars, int len) { 710 assert(java_string->klass() == vmClasses::String_klass(), 711 "must be java_string"); 712 typeArrayOop value = java_lang_String::value_no_keepalive(java_string); 713 int length = java_lang_String::length(java_string, value); 714 if (length != len) { 715 return false; 716 } 717 bool is_latin1 = java_lang_String::is_latin1(java_string); 718 if (!is_latin1) { 719 for (int i = 0; i < len; i++) { 720 if (value->char_at(i) != chars[i]) { 721 return false; 722 } 723 } 724 } else { 725 for (int i = 0; i < len; i++) { 726 if ((((jchar) value->byte_at(i)) & 0xff) != chars[i]) { 727 return false; 728 } 729 } 730 } 731 return true; 732 } 733 734 bool java_lang_String::equals(oop str1, oop str2) { 735 assert(str1->klass() == vmClasses::String_klass(), 736 "must be java String"); 737 assert(str2->klass() == vmClasses::String_klass(), 738 "must be java String"); 739 typeArrayOop value1 = java_lang_String::value_no_keepalive(str1); 740 bool is_latin1 = java_lang_String::is_latin1(str1); 741 typeArrayOop value2 = java_lang_String::value_no_keepalive(str2); 742 bool is_latin2 = java_lang_String::is_latin1(str2); 743 744 if (is_latin1 != is_latin2) { 745 // Strings with different coders are never equal. 746 return false; 747 } 748 return value_equals(value1, value2); 749 } 750 751 void java_lang_String::print(oop java_string, outputStream* st) { 752 assert(java_string->klass() == vmClasses::String_klass(), "must be java_string"); 753 typeArrayOop value = java_lang_String::value_no_keepalive(java_string); 754 755 if (value == NULL) { 756 // This can happen if, e.g., printing a String 757 // object before its initializer has been called 758 st->print("NULL"); 759 return; 760 } 761 762 int length = java_lang_String::length(java_string, value); 763 bool is_latin1 = java_lang_String::is_latin1(java_string); 764 765 st->print("\""); 766 for (int index = 0; index < length; index++) { 767 st->print("%c", (!is_latin1) ? value->char_at(index) : 768 ((jchar) value->byte_at(index)) & 0xff ); 769 } 770 st->print("\""); 771 } 772 773 // java_lang_Class 774 775 int java_lang_Class::_klass_offset; 776 int java_lang_Class::_array_klass_offset; 777 int java_lang_Class::_oop_size_offset; 778 int java_lang_Class::_static_oop_field_count_offset; 779 int java_lang_Class::_class_loader_offset; 780 int java_lang_Class::_module_offset; 781 int java_lang_Class::_protection_domain_offset; 782 int java_lang_Class::_component_mirror_offset; 783 int java_lang_Class::_signers_offset; 784 int java_lang_Class::_name_offset; 785 int java_lang_Class::_source_file_offset; 786 int java_lang_Class::_classData_offset; 787 int java_lang_Class::_classRedefinedCount_offset; 788 789 bool java_lang_Class::_offsets_computed = false; 790 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL; 791 GrowableArray<Klass*>* java_lang_Class::_fixup_module_field_list = NULL; 792 793 #ifdef ASSERT 794 inline static void assert_valid_static_string_field(fieldDescriptor* fd) { 795 assert(fd->has_initial_value(), "caller should have checked this"); 796 assert(fd->field_type() == T_OBJECT, "caller should have checked this"); 797 // Can't use vmSymbols::string_signature() as fd->signature() may have been relocated 798 // during DumpSharedSpaces 799 assert(fd->signature()->equals("Ljava/lang/String;"), "just checking"); 800 } 801 #endif 802 803 static void initialize_static_string_field(fieldDescriptor* fd, Handle mirror, TRAPS) { 804 DEBUG_ONLY(assert_valid_static_string_field(fd);) 805 oop string = fd->string_initial_value(CHECK); 806 mirror()->obj_field_put(fd->offset(), string); 807 } 808 809 #if INCLUDE_CDS_JAVA_HEAP 810 static void initialize_static_string_field_for_dump(fieldDescriptor* fd, Handle mirror) { 811 DEBUG_ONLY(assert_valid_static_string_field(fd);) 812 assert(DumpSharedSpaces, "must be"); 813 assert(HeapShared::is_archived_object_during_dumptime(mirror()), "must be"); 814 // Archive the String field and update the pointer. 815 oop s = mirror()->obj_field(fd->offset()); 816 oop archived_s = StringTable::create_archived_string(s); 817 mirror()->obj_field_put(fd->offset(), archived_s); 818 } 819 #endif 820 821 static void initialize_static_primitive_field(fieldDescriptor* fd, Handle mirror) { 822 assert(fd->has_initial_value(), "caller should have checked this"); 823 BasicType t = fd->field_type(); 824 switch (t) { 825 case T_BYTE: 826 mirror()->byte_field_put(fd->offset(), fd->int_initial_value()); 827 break; 828 case T_BOOLEAN: 829 mirror()->bool_field_put(fd->offset(), fd->int_initial_value()); 830 break; 831 case T_CHAR: 832 mirror()->char_field_put(fd->offset(), fd->int_initial_value()); 833 break; 834 case T_SHORT: 835 mirror()->short_field_put(fd->offset(), fd->int_initial_value()); 836 break; 837 case T_INT: 838 mirror()->int_field_put(fd->offset(), fd->int_initial_value()); 839 break; 840 case T_FLOAT: 841 mirror()->float_field_put(fd->offset(), fd->float_initial_value()); 842 break; 843 case T_DOUBLE: 844 mirror()->double_field_put(fd->offset(), fd->double_initial_value()); 845 break; 846 case T_LONG: 847 mirror()->long_field_put(fd->offset(), fd->long_initial_value()); 848 break; 849 default: 850 // Illegal ConstantValue attribute in class file should have been 851 // caught during classfile parsing. 852 ShouldNotReachHere(); 853 } 854 } 855 856 static void initialize_static_field(fieldDescriptor* fd, Handle mirror, TRAPS) { 857 assert(mirror.not_null() && fd->is_static(), "just checking"); 858 if (fd->has_initial_value()) { 859 if (fd->field_type() != T_OBJECT) { 860 initialize_static_primitive_field(fd, mirror); 861 } else { 862 initialize_static_string_field(fd, mirror, CHECK); 863 } 864 } 865 } 866 867 #if INCLUDE_CDS_JAVA_HEAP 868 static void initialize_static_field_for_dump(fieldDescriptor* fd, Handle mirror) { 869 assert(mirror.not_null() && fd->is_static(), "just checking"); 870 if (fd->has_initial_value()) { 871 if (fd->field_type() != T_OBJECT) { 872 initialize_static_primitive_field(fd, mirror); 873 } else { 874 initialize_static_string_field_for_dump(fd, mirror); 875 } 876 } 877 } 878 #endif 879 880 void java_lang_Class::fixup_mirror(Klass* k, TRAPS) { 881 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already"); 882 883 // If the offset was read from the shared archive, it was fixed up already 884 if (!k->is_shared()) { 885 if (k->is_instance_klass()) { 886 // During bootstrap, java.lang.Class wasn't loaded so static field 887 // offsets were computed without the size added it. Go back and 888 // update all the static field offsets to included the size. 889 for (JavaFieldStream fs(InstanceKlass::cast(k)); !fs.done(); fs.next()) { 890 if (fs.access_flags().is_static()) { 891 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields(); 892 fs.set_offset(real_offset); 893 } 894 } 895 } 896 } 897 898 if (k->is_shared() && k->has_archived_mirror_index()) { 899 if (ArchiveHeapLoader::are_archived_mirrors_available()) { 900 bool present = restore_archived_mirror(k, Handle(), Handle(), Handle(), CHECK); 901 assert(present, "Missing archived mirror for %s", k->external_name()); 902 return; 903 } else { 904 k->clear_java_mirror_handle(); 905 k->clear_archived_mirror_index(); 906 } 907 } 908 create_mirror(k, Handle(), Handle(), Handle(), Handle(), CHECK); 909 } 910 911 void java_lang_Class::initialize_mirror_fields(Klass* k, 912 Handle mirror, 913 Handle protection_domain, 914 Handle classData, 915 TRAPS) { 916 // Set protection domain also 917 set_protection_domain(mirror(), protection_domain()); 918 919 // Initialize static fields 920 InstanceKlass::cast(k)->do_local_static_fields(&initialize_static_field, mirror, CHECK); 921 922 // Set classData 923 set_class_data(mirror(), classData()); 924 } 925 926 // Set the java.lang.Module module field in the java_lang_Class mirror 927 void java_lang_Class::set_mirror_module_field(JavaThread* current, Klass* k, Handle mirror, Handle module) { 928 if (module.is_null()) { 929 // During startup, the module may be NULL only if java.base has not been defined yet. 930 // Put the class on the fixup_module_list to patch later when the java.lang.Module 931 // for java.base is known. But note that since we captured the NULL module another 932 // thread may have completed that initialization. 933 934 bool javabase_was_defined = false; 935 { 936 MutexLocker m1(current, Module_lock); 937 // Keep list of classes needing java.base module fixup 938 if (!ModuleEntryTable::javabase_defined()) { 939 assert(k->java_mirror() != NULL, "Class's mirror is null"); 940 k->class_loader_data()->inc_keep_alive(); 941 assert(fixup_module_field_list() != NULL, "fixup_module_field_list not initialized"); 942 fixup_module_field_list()->push(k); 943 } else { 944 javabase_was_defined = true; 945 } 946 } 947 948 // If java.base was already defined then patch this particular class with java.base. 949 if (javabase_was_defined) { 950 ModuleEntry *javabase_entry = ModuleEntryTable::javabase_moduleEntry(); 951 assert(javabase_entry != NULL && javabase_entry->module() != NULL, 952 "Setting class module field, " JAVA_BASE_NAME " should be defined"); 953 Handle javabase_handle(current, javabase_entry->module()); 954 set_module(mirror(), javabase_handle()); 955 } 956 } else { 957 assert(Universe::is_module_initialized() || 958 (ModuleEntryTable::javabase_defined() && 959 (module() == ModuleEntryTable::javabase_moduleEntry()->module())), 960 "Incorrect java.lang.Module specification while creating mirror"); 961 set_module(mirror(), module()); 962 } 963 } 964 965 // Statically allocate fixup lists because they always get created. 966 void java_lang_Class::allocate_fixup_lists() { 967 GrowableArray<Klass*>* mirror_list = 968 new (mtClass) GrowableArray<Klass*>(40, mtClass); 969 set_fixup_mirror_list(mirror_list); 970 971 GrowableArray<Klass*>* module_list = 972 new (mtModule) GrowableArray<Klass*>(500, mtModule); 973 set_fixup_module_field_list(module_list); 974 } 975 976 void java_lang_Class::create_mirror(Klass* k, Handle class_loader, 977 Handle module, Handle protection_domain, 978 Handle classData, TRAPS) { 979 assert(k != NULL, "Use create_basic_type_mirror for primitive types"); 980 assert(k->java_mirror() == NULL, "should only assign mirror once"); 981 982 // Use this moment of initialization to cache modifier_flags also, 983 // to support Class.getModifiers(). Instance classes recalculate 984 // the cached flags after the class file is parsed, but before the 985 // class is put into the system dictionary. 986 int computed_modifiers = k->compute_modifier_flags(); 987 k->set_modifier_flags(computed_modifiers); 988 // Class_klass has to be loaded because it is used to allocate 989 // the mirror. 990 if (vmClasses::Class_klass_loaded()) { 991 // Allocate mirror (java.lang.Class instance) 992 oop mirror_oop = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(k, CHECK); 993 Handle mirror(THREAD, mirror_oop); 994 Handle comp_mirror; 995 996 // Setup indirection from mirror->klass 997 set_klass(mirror(), k); 998 999 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass()); 1000 assert(oop_size(mirror()) == mk->instance_size(k), "should have been set"); 1001 1002 set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror())); 1003 1004 // It might also have a component mirror. This mirror must already exist. 1005 if (k->is_array_klass()) { 1006 if (k->is_typeArray_klass()) { 1007 BasicType type = TypeArrayKlass::cast(k)->element_type(); 1008 comp_mirror = Handle(THREAD, Universe::java_mirror(type)); 1009 } else { 1010 assert(k->is_objArray_klass(), "Must be"); 1011 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass(); 1012 assert(element_klass != NULL, "Must have an element klass"); 1013 comp_mirror = Handle(THREAD, element_klass->java_mirror()); 1014 } 1015 assert(comp_mirror() != NULL, "must have a mirror"); 1016 1017 // Two-way link between the array klass and its component mirror: 1018 // (array_klass) k -> mirror -> component_mirror -> array_klass -> k 1019 set_component_mirror(mirror(), comp_mirror()); 1020 // See below for ordering dependencies between field array_klass in component mirror 1021 // and java_mirror in this klass. 1022 } else { 1023 assert(k->is_instance_klass(), "Must be"); 1024 1025 initialize_mirror_fields(k, mirror, protection_domain, classData, THREAD); 1026 if (HAS_PENDING_EXCEPTION) { 1027 // If any of the fields throws an exception like OOM remove the klass field 1028 // from the mirror so GC doesn't follow it after the klass has been deallocated. 1029 // This mirror looks like a primitive type, which logically it is because it 1030 // it represents no class. 1031 set_klass(mirror(), NULL); 1032 return; 1033 } 1034 } 1035 1036 // set the classLoader field in the java_lang_Class instance 1037 assert(class_loader() == k->class_loader(), "should be same"); 1038 set_class_loader(mirror(), class_loader()); 1039 1040 // Setup indirection from klass->mirror 1041 // after any exceptions can happen during allocations. 1042 k->set_java_mirror(mirror); 1043 1044 // Set the module field in the java_lang_Class instance. This must be done 1045 // after the mirror is set. 1046 set_mirror_module_field(THREAD, k, mirror, module); 1047 1048 if (comp_mirror() != NULL) { 1049 // Set after k->java_mirror() is published, because compiled code running 1050 // concurrently doesn't expect a k to have a null java_mirror. 1051 release_set_array_klass(comp_mirror(), k); 1052 } 1053 } else { 1054 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized"); 1055 fixup_mirror_list()->push(k); 1056 } 1057 } 1058 1059 #if INCLUDE_CDS_JAVA_HEAP 1060 // Clears mirror fields. Static final fields with initial values are reloaded 1061 // from constant pool. The object identity hash is in the object header and is 1062 // not affected. 1063 class ResetMirrorField: public FieldClosure { 1064 private: 1065 Handle _m; 1066 1067 public: 1068 ResetMirrorField(Handle mirror) : _m(mirror) {} 1069 1070 void do_field(fieldDescriptor* fd) { 1071 assert(DumpSharedSpaces, "dump time only"); 1072 assert(_m.not_null(), "Mirror cannot be NULL"); 1073 1074 if (fd->is_static() && fd->has_initial_value()) { 1075 initialize_static_field_for_dump(fd, _m); 1076 return; 1077 } 1078 1079 BasicType ft = fd->field_type(); 1080 switch (ft) { 1081 case T_BYTE: 1082 _m()->byte_field_put(fd->offset(), 0); 1083 break; 1084 case T_CHAR: 1085 _m()->char_field_put(fd->offset(), 0); 1086 break; 1087 case T_DOUBLE: 1088 _m()->double_field_put(fd->offset(), 0); 1089 break; 1090 case T_FLOAT: 1091 _m()->float_field_put(fd->offset(), 0); 1092 break; 1093 case T_INT: 1094 _m()->int_field_put(fd->offset(), 0); 1095 break; 1096 case T_LONG: 1097 _m()->long_field_put(fd->offset(), 0); 1098 break; 1099 case T_SHORT: 1100 _m()->short_field_put(fd->offset(), 0); 1101 break; 1102 case T_BOOLEAN: 1103 _m()->bool_field_put(fd->offset(), false); 1104 break; 1105 case T_ARRAY: 1106 case T_OBJECT: { 1107 // It might be useful to cache the String field, but 1108 // for now just clear out any reference field 1109 oop o = _m()->obj_field(fd->offset()); 1110 _m()->obj_field_put(fd->offset(), NULL); 1111 break; 1112 } 1113 default: 1114 ShouldNotReachHere(); 1115 break; 1116 } 1117 } 1118 }; 1119 1120 void java_lang_Class::archive_basic_type_mirrors() { 1121 assert(HeapShared::can_write(), "must be"); 1122 1123 for (int t = T_BOOLEAN; t < T_VOID+1; t++) { 1124 BasicType bt = (BasicType)t; 1125 if (!is_reference_type(bt)) { 1126 oop m = Universe::java_mirror(bt); 1127 assert(m != NULL, "sanity"); 1128 // Update the field at _array_klass_offset to point to the relocated array klass. 1129 oop archived_m = HeapShared::archive_object(m); 1130 assert(archived_m != NULL, "sanity"); 1131 1132 // Clear the fields. Just to be safe 1133 Klass *k = m->klass(); 1134 Handle archived_mirror_h(Thread::current(), archived_m); 1135 ResetMirrorField reset(archived_mirror_h); 1136 InstanceKlass::cast(k)->do_nonstatic_fields(&reset); 1137 1138 log_trace(cds, heap, mirror)( 1139 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT, 1140 type2name(bt), p2i(m), p2i(archived_m)); 1141 1142 Universe::set_archived_basic_type_mirror_index(bt, HeapShared::append_root(archived_m)); 1143 } 1144 } 1145 } 1146 // 1147 // After the mirror object is successfully archived, the archived 1148 // klass is set with _has_archived_raw_mirror flag. 1149 // 1150 // The _has_archived_raw_mirror flag is cleared at runtime when the 1151 // archived mirror is restored. If archived java heap data cannot 1152 // be used at runtime, new mirror object is created for the shared 1153 // class. The _has_archived_raw_mirror is cleared also during the process. 1154 oop java_lang_Class::archive_mirror(Klass* k) { 1155 assert(HeapShared::can_write(), "must be"); 1156 1157 // Mirror is already archived 1158 if (k->has_archived_mirror_index()) { 1159 assert(k->archived_java_mirror() != NULL, "no archived mirror"); 1160 return k->archived_java_mirror(); 1161 } 1162 1163 // No mirror 1164 oop mirror = k->java_mirror(); 1165 if (mirror == NULL) { 1166 return NULL; 1167 } 1168 1169 if (k->is_instance_klass()) { 1170 InstanceKlass *ik = InstanceKlass::cast(k); 1171 assert(ik->signers() == NULL, "class with signer should have been excluded"); 1172 1173 if (!(ik->is_shared_boot_class() || ik->is_shared_platform_class() || 1174 ik->is_shared_app_class())) { 1175 // Archiving mirror for classes from non-builtin loaders is not 1176 // supported. 1177 return NULL; 1178 } 1179 } 1180 1181 // Now start archiving the mirror object 1182 oop archived_mirror = HeapShared::archive_object(mirror); 1183 if (archived_mirror == NULL) { 1184 return NULL; 1185 } 1186 1187 archived_mirror = process_archived_mirror(k, mirror, archived_mirror); 1188 if (archived_mirror == NULL) { 1189 return NULL; 1190 } 1191 1192 k->set_archived_java_mirror(archived_mirror); 1193 1194 ResourceMark rm; 1195 log_trace(cds, heap, mirror)( 1196 "Archived %s mirror object from " PTR_FORMAT " ==> " PTR_FORMAT, 1197 k->external_name(), p2i(mirror), p2i(archived_mirror)); 1198 1199 return archived_mirror; 1200 } 1201 1202 // The process is based on create_mirror(). 1203 oop java_lang_Class::process_archived_mirror(Klass* k, oop mirror, 1204 oop archived_mirror) { 1205 // Clear nonstatic fields in archived mirror. Some of the fields will be set 1206 // to archived metadata and objects below. 1207 Klass *c = archived_mirror->klass(); 1208 Handle archived_mirror_h(Thread::current(), archived_mirror); 1209 ResetMirrorField reset(archived_mirror_h); 1210 InstanceKlass::cast(c)->do_nonstatic_fields(&reset); 1211 1212 if (k->is_array_klass()) { 1213 oop archived_comp_mirror; 1214 if (k->is_typeArray_klass()) { 1215 // The primitive type mirrors are already archived. Get the archived mirror. 1216 oop comp_mirror = component_mirror(mirror); 1217 archived_comp_mirror = HeapShared::find_archived_heap_object(comp_mirror); 1218 assert(archived_comp_mirror != NULL, "Must be"); 1219 } else { 1220 assert(k->is_objArray_klass(), "Must be"); 1221 Klass* element_klass = ObjArrayKlass::cast(k)->element_klass(); 1222 assert(element_klass != NULL, "Must have an element klass"); 1223 archived_comp_mirror = archive_mirror(element_klass); 1224 if (archived_comp_mirror == NULL) { 1225 return NULL; 1226 } 1227 } 1228 set_component_mirror(archived_mirror, archived_comp_mirror); 1229 } else { 1230 assert(k->is_instance_klass(), "Must be"); 1231 1232 // Reset local static fields in the mirror 1233 InstanceKlass::cast(k)->do_local_static_fields(&reset); 1234 1235 set_protection_domain(archived_mirror, NULL); 1236 set_signers(archived_mirror, NULL); 1237 set_source_file(archived_mirror, NULL); 1238 } 1239 1240 // clear class loader and mirror_module_field 1241 set_class_loader(archived_mirror, NULL); 1242 set_module(archived_mirror, NULL); 1243 1244 return archived_mirror; 1245 } 1246 1247 // Returns true if the mirror is updated, false if no archived mirror 1248 // data is present. After the archived mirror object is restored, the 1249 // shared klass' _has_raw_archived_mirror flag is cleared. 1250 bool java_lang_Class::restore_archived_mirror(Klass *k, 1251 Handle class_loader, Handle module, 1252 Handle protection_domain, TRAPS) { 1253 // Postpone restoring archived mirror until java.lang.Class is loaded. Please 1254 // see more details in vmClasses::resolve_all(). 1255 if (!vmClasses::Class_klass_loaded()) { 1256 assert(fixup_mirror_list() != NULL, "fixup_mirror_list not initialized"); 1257 fixup_mirror_list()->push(k); 1258 return true; 1259 } 1260 1261 oop m = k->archived_java_mirror(); 1262 assert(m != NULL, "must have stored non-null archived mirror"); 1263 1264 // Sanity: clear it now to prevent re-initialization if any of the following fails 1265 k->clear_archived_mirror_index(); 1266 1267 // mirror is archived, restore 1268 log_debug(cds, mirror)("Archived mirror is: " PTR_FORMAT, p2i(m)); 1269 if (ArchiveHeapLoader::is_mapped()) { 1270 assert(Universe::heap()->is_archived_object(m), "must be archived mirror object"); 1271 } 1272 assert(as_Klass(m) == k, "must be"); 1273 Handle mirror(THREAD, m); 1274 1275 if (!k->is_array_klass()) { 1276 // - local static final fields with initial values were initialized at dump time 1277 1278 if (protection_domain.not_null()) { 1279 set_protection_domain(mirror(), protection_domain()); 1280 } 1281 } 1282 1283 assert(class_loader() == k->class_loader(), "should be same"); 1284 if (class_loader.not_null()) { 1285 set_class_loader(mirror(), class_loader()); 1286 } 1287 1288 k->set_java_mirror(mirror); 1289 1290 set_mirror_module_field(THREAD, k, mirror, module); 1291 1292 if (log_is_enabled(Trace, cds, heap, mirror)) { 1293 ResourceMark rm(THREAD); 1294 log_trace(cds, heap, mirror)( 1295 "Restored %s archived mirror " PTR_FORMAT, k->external_name(), p2i(mirror())); 1296 } 1297 1298 return true; 1299 } 1300 #endif // INCLUDE_CDS_JAVA_HEAP 1301 1302 void java_lang_Class::fixup_module_field(Klass* k, Handle module) { 1303 assert(_module_offset != 0, "must have been computed already"); 1304 set_module(k->java_mirror(), module()); 1305 } 1306 1307 void java_lang_Class::set_oop_size(HeapWord* java_class, size_t size) { 1308 assert(_oop_size_offset != 0, "must be set"); 1309 assert(size > 0, "Oop size must be greater than zero, not " SIZE_FORMAT, size); 1310 assert(size <= INT_MAX, "Lossy conversion: " SIZE_FORMAT, size); 1311 *(int*)(((char*)java_class) + _oop_size_offset) = (int)size; 1312 } 1313 1314 int java_lang_Class::static_oop_field_count(oop java_class) { 1315 assert(_static_oop_field_count_offset != 0, "must be set"); 1316 return java_class->int_field(_static_oop_field_count_offset); 1317 } 1318 1319 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) { 1320 assert(_static_oop_field_count_offset != 0, "must be set"); 1321 java_class->int_field_put(_static_oop_field_count_offset, size); 1322 } 1323 1324 oop java_lang_Class::protection_domain(oop java_class) { 1325 assert(_protection_domain_offset != 0, "must be set"); 1326 return java_class->obj_field(_protection_domain_offset); 1327 } 1328 void java_lang_Class::set_protection_domain(oop java_class, oop pd) { 1329 assert(_protection_domain_offset != 0, "must be set"); 1330 java_class->obj_field_put(_protection_domain_offset, pd); 1331 } 1332 1333 void java_lang_Class::set_component_mirror(oop java_class, oop comp_mirror) { 1334 assert(_component_mirror_offset != 0, "must be set"); 1335 java_class->obj_field_put(_component_mirror_offset, comp_mirror); 1336 } 1337 oop java_lang_Class::component_mirror(oop java_class) { 1338 assert(_component_mirror_offset != 0, "must be set"); 1339 return java_class->obj_field(_component_mirror_offset); 1340 } 1341 1342 objArrayOop java_lang_Class::signers(oop java_class) { 1343 assert(_signers_offset != 0, "must be set"); 1344 return (objArrayOop)java_class->obj_field(_signers_offset); 1345 } 1346 void java_lang_Class::set_signers(oop java_class, objArrayOop signers) { 1347 assert(_signers_offset != 0, "must be set"); 1348 java_class->obj_field_put(_signers_offset, signers); 1349 } 1350 1351 oop java_lang_Class::class_data(oop java_class) { 1352 assert(_classData_offset != 0, "must be set"); 1353 return java_class->obj_field(_classData_offset); 1354 } 1355 void java_lang_Class::set_class_data(oop java_class, oop class_data) { 1356 assert(_classData_offset != 0, "must be set"); 1357 java_class->obj_field_put(_classData_offset, class_data); 1358 } 1359 1360 void java_lang_Class::set_class_loader(oop java_class, oop loader) { 1361 assert(_class_loader_offset != 0, "offsets should have been initialized"); 1362 java_class->obj_field_put(_class_loader_offset, loader); 1363 } 1364 1365 oop java_lang_Class::class_loader(oop java_class) { 1366 assert(_class_loader_offset != 0, "must be set"); 1367 return java_class->obj_field(_class_loader_offset); 1368 } 1369 1370 oop java_lang_Class::module(oop java_class) { 1371 assert(_module_offset != 0, "must be set"); 1372 return java_class->obj_field(_module_offset); 1373 } 1374 1375 void java_lang_Class::set_module(oop java_class, oop module) { 1376 assert(_module_offset != 0, "must be set"); 1377 java_class->obj_field_put(_module_offset, module); 1378 } 1379 1380 oop java_lang_Class::name(Handle java_class, TRAPS) { 1381 assert(_name_offset != 0, "must be set"); 1382 oop o = java_class->obj_field(_name_offset); 1383 if (o == NULL) { 1384 o = StringTable::intern(as_external_name(java_class()), THREAD); 1385 java_class->obj_field_put(_name_offset, o); 1386 } 1387 return o; 1388 } 1389 1390 oop java_lang_Class::source_file(oop java_class) { 1391 assert(_source_file_offset != 0, "must be set"); 1392 return java_class->obj_field(_source_file_offset); 1393 } 1394 1395 void java_lang_Class::set_source_file(oop java_class, oop source_file) { 1396 assert(_source_file_offset != 0, "must be set"); 1397 java_class->obj_field_put(_source_file_offset, source_file); 1398 } 1399 1400 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) { 1401 // This should be improved by adding a field at the Java level or by 1402 // introducing a new VM klass (see comment in ClassFileParser) 1403 oop java_class = InstanceMirrorKlass::cast(vmClasses::Class_klass())->allocate_instance(NULL, CHECK_NULL); 1404 if (type != T_VOID) { 1405 Klass* aklass = Universe::typeArrayKlassObj(type); 1406 assert(aklass != NULL, "correct bootstrap"); 1407 release_set_array_klass(java_class, aklass); 1408 } 1409 #ifdef ASSERT 1410 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(vmClasses::Class_klass()); 1411 assert(static_oop_field_count(java_class) == 0, "should have been zeroed by allocation"); 1412 #endif 1413 return java_class; 1414 } 1415 1416 void java_lang_Class::set_klass(oop java_class, Klass* klass) { 1417 assert(is_instance(java_class), "must be a Class object"); 1418 java_class->metadata_field_put(_klass_offset, klass); 1419 } 1420 1421 1422 void java_lang_Class::print_signature(oop java_class, outputStream* st) { 1423 assert(is_instance(java_class), "must be a Class object"); 1424 Symbol* name = NULL; 1425 bool is_instance = false; 1426 if (is_primitive(java_class)) { 1427 name = vmSymbols::type_signature(primitive_type(java_class)); 1428 } else { 1429 Klass* k = as_Klass(java_class); 1430 is_instance = k->is_instance_klass(); 1431 name = k->name(); 1432 } 1433 if (name == NULL) { 1434 st->print("<null>"); 1435 return; 1436 } 1437 if (is_instance) st->print("L"); 1438 st->write((char*) name->base(), (int) name->utf8_length()); 1439 if (is_instance) st->print(";"); 1440 } 1441 1442 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found) { 1443 assert(is_instance(java_class), "must be a Class object"); 1444 Symbol* name; 1445 if (is_primitive(java_class)) { 1446 name = vmSymbols::type_signature(primitive_type(java_class)); 1447 // Because this can create a new symbol, the caller has to decrement 1448 // the refcount, so make adjustment here and below for symbols returned 1449 // that are not created or incremented due to a successful lookup. 1450 name->increment_refcount(); 1451 } else { 1452 Klass* k = as_Klass(java_class); 1453 if (!k->is_instance_klass()) { 1454 name = k->name(); 1455 name->increment_refcount(); 1456 } else { 1457 ResourceMark rm; 1458 const char* sigstr = k->signature_name(); 1459 int siglen = (int) strlen(sigstr); 1460 if (!intern_if_not_found) { 1461 name = SymbolTable::probe(sigstr, siglen); 1462 } else { 1463 name = SymbolTable::new_symbol(sigstr, siglen); 1464 } 1465 } 1466 } 1467 return name; 1468 } 1469 1470 // Returns the Java name for this Java mirror (Resource allocated) 1471 // See Klass::external_name(). 1472 // For primitive type Java mirrors, its type name is returned. 1473 const char* java_lang_Class::as_external_name(oop java_class) { 1474 assert(is_instance(java_class), "must be a Class object"); 1475 const char* name = NULL; 1476 if (is_primitive(java_class)) { 1477 name = type2name(primitive_type(java_class)); 1478 } else { 1479 name = as_Klass(java_class)->external_name(); 1480 } 1481 if (name == NULL) { 1482 name = "<null>"; 1483 } 1484 return name; 1485 } 1486 1487 Klass* java_lang_Class::array_klass_acquire(oop java_class) { 1488 Klass* k = ((Klass*)java_class->metadata_field_acquire(_array_klass_offset)); 1489 assert(k == NULL || k->is_klass() && k->is_array_klass(), "should be array klass"); 1490 return k; 1491 } 1492 1493 1494 void java_lang_Class::release_set_array_klass(oop java_class, Klass* klass) { 1495 assert(klass->is_klass() && klass->is_array_klass(), "should be array klass"); 1496 java_class->release_metadata_field_put(_array_klass_offset, klass); 1497 } 1498 1499 1500 BasicType java_lang_Class::primitive_type(oop java_class) { 1501 assert(is_primitive(java_class), "just checking"); 1502 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset)); 1503 BasicType type = T_VOID; 1504 if (ak != NULL) { 1505 // Note: create_basic_type_mirror above initializes ak to a non-null value. 1506 type = ArrayKlass::cast(ak)->element_type(); 1507 } else { 1508 assert(java_class == Universe::void_mirror(), "only valid non-array primitive"); 1509 } 1510 assert(Universe::java_mirror(type) == java_class, "must be consistent"); 1511 return type; 1512 } 1513 1514 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) { 1515 assert(is_instance(java_class), "must be a Class object"); 1516 if (is_primitive(java_class)) { 1517 if (reference_klass != NULL) 1518 (*reference_klass) = NULL; 1519 return primitive_type(java_class); 1520 } else { 1521 if (reference_klass != NULL) 1522 (*reference_klass) = as_Klass(java_class); 1523 return T_OBJECT; 1524 } 1525 } 1526 1527 1528 oop java_lang_Class::primitive_mirror(BasicType t) { 1529 oop mirror = Universe::java_mirror(t); 1530 assert(mirror != NULL && mirror->is_a(vmClasses::Class_klass()), "must be a Class"); 1531 assert(is_primitive(mirror), "must be primitive"); 1532 return mirror; 1533 } 1534 1535 #define CLASS_FIELDS_DO(macro) \ 1536 macro(_classRedefinedCount_offset, k, "classRedefinedCount", int_signature, false); \ 1537 macro(_class_loader_offset, k, "classLoader", classloader_signature, false); \ 1538 macro(_component_mirror_offset, k, "componentType", class_signature, false); \ 1539 macro(_module_offset, k, "module", module_signature, false); \ 1540 macro(_name_offset, k, "name", string_signature, false); \ 1541 macro(_classData_offset, k, "classData", object_signature, false); 1542 1543 void java_lang_Class::compute_offsets() { 1544 if (_offsets_computed) { 1545 return; 1546 } 1547 1548 _offsets_computed = true; 1549 1550 InstanceKlass* k = vmClasses::Class_klass(); 1551 CLASS_FIELDS_DO(FIELD_COMPUTE_OFFSET); 1552 1553 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 1554 } 1555 1556 #if INCLUDE_CDS 1557 void java_lang_Class::serialize_offsets(SerializeClosure* f) { 1558 f->do_bool(&_offsets_computed); 1559 1560 CLASS_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 1561 1562 CLASS_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); 1563 } 1564 #endif 1565 1566 int java_lang_Class::classRedefinedCount(oop the_class_mirror) { 1567 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized"); 1568 return the_class_mirror->int_field(_classRedefinedCount_offset); 1569 } 1570 1571 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) { 1572 assert(_classRedefinedCount_offset != 0, "offsets should have been initialized"); 1573 the_class_mirror->int_field_put(_classRedefinedCount_offset, value); 1574 } 1575 1576 1577 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the 1578 // platform thread structure, and a eetop offset which was used for thread 1579 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures 1580 // merged, so in the HotSpot VM we just use the eetop field for the thread 1581 // instead of the privateInfo_offset. 1582 // 1583 // Note: The stackSize field is only present starting in 1.4. 1584 1585 int java_lang_Thread_FieldHolder::_group_offset; 1586 int java_lang_Thread_FieldHolder::_priority_offset; 1587 int java_lang_Thread_FieldHolder::_stackSize_offset; 1588 int java_lang_Thread_FieldHolder::_daemon_offset; 1589 int java_lang_Thread_FieldHolder::_thread_status_offset; 1590 1591 #define THREAD_FIELD_HOLDER_FIELDS_DO(macro) \ 1592 macro(_group_offset, k, vmSymbols::group_name(), threadgroup_signature, false); \ 1593 macro(_priority_offset, k, vmSymbols::priority_name(), int_signature, false); \ 1594 macro(_stackSize_offset, k, "stackSize", long_signature, false); \ 1595 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); \ 1596 macro(_thread_status_offset, k, "threadStatus", int_signature, false) 1597 1598 void java_lang_Thread_FieldHolder::compute_offsets() { 1599 assert(_group_offset == 0, "offsets should be initialized only once"); 1600 1601 InstanceKlass* k = vmClasses::Thread_FieldHolder_klass(); 1602 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_COMPUTE_OFFSET); 1603 } 1604 1605 #if INCLUDE_CDS 1606 void java_lang_Thread_FieldHolder::serialize_offsets(SerializeClosure* f) { 1607 THREAD_FIELD_HOLDER_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 1608 } 1609 #endif 1610 1611 oop java_lang_Thread_FieldHolder::threadGroup(oop holder) { 1612 return holder->obj_field(_group_offset); 1613 } 1614 1615 ThreadPriority java_lang_Thread_FieldHolder::priority(oop holder) { 1616 return (ThreadPriority)holder->int_field(_priority_offset); 1617 } 1618 1619 void java_lang_Thread_FieldHolder::set_priority(oop holder, ThreadPriority priority) { 1620 holder->int_field_put(_priority_offset, priority); 1621 } 1622 1623 jlong java_lang_Thread_FieldHolder::stackSize(oop holder) { 1624 return holder->long_field(_stackSize_offset); 1625 } 1626 1627 bool java_lang_Thread_FieldHolder::is_daemon(oop holder) { 1628 return holder->bool_field(_daemon_offset) != 0; 1629 } 1630 1631 void java_lang_Thread_FieldHolder::set_daemon(oop holder) { 1632 holder->bool_field_put(_daemon_offset, true); 1633 } 1634 1635 void java_lang_Thread_FieldHolder::set_thread_status(oop holder, JavaThreadStatus status) { 1636 holder->int_field_put(_thread_status_offset, static_cast<int>(status)); 1637 } 1638 1639 JavaThreadStatus java_lang_Thread_FieldHolder::get_thread_status(oop holder) { 1640 return static_cast<JavaThreadStatus>(holder->int_field(_thread_status_offset)); 1641 } 1642 1643 1644 int java_lang_Thread_Constants::_static_VTHREAD_GROUP_offset = 0; 1645 int java_lang_Thread_Constants::_static_NOT_SUPPORTED_CLASSLOADER_offset = 0; 1646 1647 #define THREAD_CONSTANTS_STATIC_FIELDS_DO(macro) \ 1648 macro(_static_VTHREAD_GROUP_offset, k, "VTHREAD_GROUP", threadgroup_signature, true); \ 1649 macro(_static_NOT_SUPPORTED_CLASSLOADER_offset, k, "NOT_SUPPORTED_CLASSLOADER", classloader_signature, true); 1650 1651 void java_lang_Thread_Constants::compute_offsets() { 1652 assert(_static_VTHREAD_GROUP_offset == 0, "offsets should be initialized only once"); 1653 1654 InstanceKlass* k = vmClasses::Thread_Constants_klass(); 1655 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_COMPUTE_OFFSET); 1656 } 1657 1658 #if INCLUDE_CDS 1659 void java_lang_Thread_Constants::serialize_offsets(SerializeClosure* f) { 1660 THREAD_CONSTANTS_STATIC_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 1661 } 1662 #endif 1663 1664 oop java_lang_Thread_Constants::get_VTHREAD_GROUP() { 1665 InstanceKlass* k = vmClasses::Thread_Constants_klass(); 1666 oop base = k->static_field_base_raw(); 1667 return base->obj_field(_static_VTHREAD_GROUP_offset); 1668 } 1669 1670 oop java_lang_Thread_Constants::get_NOT_SUPPORTED_CLASSLOADER() { 1671 InstanceKlass* k = vmClasses::Thread_Constants_klass(); 1672 oop base = k->static_field_base_raw(); 1673 return base->obj_field(_static_NOT_SUPPORTED_CLASSLOADER_offset); 1674 } 1675 1676 int java_lang_Thread::_holder_offset; 1677 int java_lang_Thread::_name_offset; 1678 int java_lang_Thread::_contextClassLoader_offset; 1679 int java_lang_Thread::_inheritedAccessControlContext_offset; 1680 int java_lang_Thread::_eetop_offset; 1681 int java_lang_Thread::_jvmti_thread_state_offset; 1682 int java_lang_Thread::_interrupted_offset; 1683 int java_lang_Thread::_tid_offset; 1684 int java_lang_Thread::_continuation_offset; 1685 int java_lang_Thread::_park_blocker_offset; 1686 int java_lang_Thread::_scopedValueBindings_offset; 1687 JFR_ONLY(int java_lang_Thread::_jfr_epoch_offset;) 1688 1689 #define THREAD_FIELDS_DO(macro) \ 1690 macro(_holder_offset, k, "holder", thread_fieldholder_signature, false); \ 1691 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ 1692 macro(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), classloader_signature, false); \ 1693 macro(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), accesscontrolcontext_signature, false); \ 1694 macro(_eetop_offset, k, "eetop", long_signature, false); \ 1695 macro(_interrupted_offset, k, "interrupted", bool_signature, false); \ 1696 macro(_tid_offset, k, "tid", long_signature, false); \ 1697 macro(_park_blocker_offset, k, "parkBlocker", object_signature, false); \ 1698 macro(_continuation_offset, k, "cont", continuation_signature, false); \ 1699 macro(_scopedValueBindings_offset, k, "scopedValueBindings", object_signature, false); 1700 1701 void java_lang_Thread::compute_offsets() { 1702 assert(_holder_offset == 0, "offsets should be initialized only once"); 1703 1704 InstanceKlass* k = vmClasses::Thread_klass(); 1705 THREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET); 1706 THREAD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 1707 } 1708 1709 #if INCLUDE_CDS 1710 void java_lang_Thread::serialize_offsets(SerializeClosure* f) { 1711 THREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 1712 THREAD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); 1713 } 1714 #endif 1715 1716 JavaThread* java_lang_Thread::thread(oop java_thread) { 1717 return reinterpret_cast<JavaThread*>(java_thread->address_field(_eetop_offset)); 1718 } 1719 1720 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) { 1721 java_thread->address_field_put(_eetop_offset, (address)thread); 1722 } 1723 1724 JvmtiThreadState* java_lang_Thread::jvmti_thread_state(oop java_thread) { 1725 return (JvmtiThreadState*)java_thread->address_field(_jvmti_thread_state_offset); 1726 } 1727 1728 void java_lang_Thread::set_jvmti_thread_state(oop java_thread, JvmtiThreadState* state) { 1729 java_thread->address_field_put(_jvmti_thread_state_offset, (address)state); 1730 } 1731 1732 void java_lang_Thread::clear_scopedValueBindings(oop java_thread) { 1733 assert(java_thread != NULL, "need a java_lang_Thread pointer here"); 1734 java_thread->obj_field_put(_scopedValueBindings_offset, NULL); 1735 } 1736 1737 oop java_lang_Thread::holder(oop java_thread) { 1738 return java_thread->obj_field(_holder_offset); 1739 } 1740 1741 bool java_lang_Thread::interrupted(oop java_thread) { 1742 // Make sure the caller can safely access oops. 1743 assert(Thread::current()->is_VM_thread() || 1744 (JavaThread::current()->thread_state() != _thread_blocked && 1745 JavaThread::current()->thread_state() != _thread_in_native), 1746 "Unsafe access to oop"); 1747 return java_thread->bool_field_volatile(_interrupted_offset); 1748 } 1749 1750 void java_lang_Thread::set_interrupted(oop java_thread, bool val) { 1751 // Make sure the caller can safely access oops. 1752 assert(Thread::current()->is_VM_thread() || 1753 (JavaThread::current()->thread_state() != _thread_blocked && 1754 JavaThread::current()->thread_state() != _thread_in_native), 1755 "Unsafe access to oop"); 1756 java_thread->bool_field_put_volatile(_interrupted_offset, val); 1757 } 1758 1759 1760 oop java_lang_Thread::name(oop java_thread) { 1761 return java_thread->obj_field(_name_offset); 1762 } 1763 1764 1765 void java_lang_Thread::set_name(oop java_thread, oop name) { 1766 java_thread->obj_field_put(_name_offset, name); 1767 } 1768 1769 1770 ThreadPriority java_lang_Thread::priority(oop java_thread) { 1771 oop holder = java_lang_Thread::holder(java_thread); 1772 assert(holder != NULL, "Java Thread not initialized"); 1773 return java_lang_Thread_FieldHolder::priority(holder); 1774 } 1775 1776 1777 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) { 1778 oop holder = java_lang_Thread::holder(java_thread); 1779 assert(holder != NULL, "Java Thread not initialized"); 1780 java_lang_Thread_FieldHolder::set_priority(holder, priority); 1781 } 1782 1783 1784 oop java_lang_Thread::threadGroup(oop java_thread) { 1785 oop holder = java_lang_Thread::holder(java_thread); 1786 assert(holder != NULL, "Java Thread not initialized"); 1787 return java_lang_Thread_FieldHolder::threadGroup(holder); 1788 } 1789 1790 1791 bool java_lang_Thread::is_alive(oop java_thread) { 1792 JavaThread* thr = java_lang_Thread::thread(java_thread); 1793 return (thr != NULL); 1794 } 1795 1796 1797 bool java_lang_Thread::is_daemon(oop java_thread) { 1798 oop holder = java_lang_Thread::holder(java_thread); 1799 assert(holder != NULL, "Java Thread not initialized"); 1800 return java_lang_Thread_FieldHolder::is_daemon(holder); 1801 } 1802 1803 1804 void java_lang_Thread::set_daemon(oop java_thread) { 1805 oop holder = java_lang_Thread::holder(java_thread); 1806 assert(holder != NULL, "Java Thread not initialized"); 1807 java_lang_Thread_FieldHolder::set_daemon(holder); 1808 } 1809 1810 oop java_lang_Thread::context_class_loader(oop java_thread) { 1811 return java_thread->obj_field(_contextClassLoader_offset); 1812 } 1813 1814 oop java_lang_Thread::inherited_access_control_context(oop java_thread) { 1815 return java_thread->obj_field(_inheritedAccessControlContext_offset); 1816 } 1817 1818 1819 jlong java_lang_Thread::stackSize(oop java_thread) { 1820 oop holder = java_lang_Thread::holder(java_thread); 1821 assert(holder != NULL, "Java Thread not initialized"); 1822 return java_lang_Thread_FieldHolder::stackSize(holder); 1823 } 1824 1825 // Write the thread status value to threadStatus field in java.lang.Thread java class. 1826 void java_lang_Thread::set_thread_status(oop java_thread, JavaThreadStatus status) { 1827 oop holder = java_lang_Thread::holder(java_thread); 1828 assert(holder != NULL, "Java Thread not initialized"); 1829 java_lang_Thread_FieldHolder::set_thread_status(holder, status); 1830 } 1831 1832 // Read thread status value from threadStatus field in java.lang.Thread java class. 1833 JavaThreadStatus java_lang_Thread::get_thread_status(oop java_thread) { 1834 // Make sure the caller is operating on behalf of the VM or is 1835 // running VM code (state == _thread_in_vm). 1836 assert(Threads_lock->owned_by_self() || Thread::current()->is_VM_thread() || 1837 JavaThread::current()->thread_state() == _thread_in_vm, 1838 "Java Thread is not running in vm"); 1839 oop holder = java_lang_Thread::holder(java_thread); 1840 if (holder == NULL) { 1841 return JavaThreadStatus::NEW; // Java Thread not initialized 1842 } else { 1843 return java_lang_Thread_FieldHolder::get_thread_status(holder); 1844 } 1845 } 1846 1847 ByteSize java_lang_Thread::thread_id_offset() { 1848 return in_ByteSize(_tid_offset); 1849 } 1850 1851 oop java_lang_Thread::park_blocker(oop java_thread) { 1852 return java_thread->obj_field(_park_blocker_offset); 1853 } 1854 1855 oop java_lang_Thread::async_get_stack_trace(oop java_thread, TRAPS) { 1856 ThreadsListHandle tlh(JavaThread::current()); 1857 JavaThread* thread; 1858 bool is_virtual = java_lang_VirtualThread::is_instance(java_thread); 1859 if (is_virtual) { 1860 oop carrier_thread = java_lang_VirtualThread::carrier_thread(java_thread); 1861 if (carrier_thread == NULL) { 1862 return NULL; 1863 } 1864 thread = java_lang_Thread::thread(carrier_thread); 1865 } else { 1866 thread = java_lang_Thread::thread(java_thread); 1867 } 1868 if (thread == NULL) { 1869 return NULL; 1870 } 1871 1872 class GetStackTraceClosure : public HandshakeClosure { 1873 public: 1874 const Handle _java_thread; 1875 int _depth; 1876 bool _retry_handshake; 1877 GrowableArray<Method*>* _methods; 1878 GrowableArray<int>* _bcis; 1879 1880 GetStackTraceClosure(Handle java_thread) : 1881 HandshakeClosure("GetStackTraceClosure"), _java_thread(java_thread), _depth(0), _retry_handshake(false), 1882 _methods(nullptr), _bcis(nullptr) { 1883 } 1884 ~GetStackTraceClosure() { 1885 delete _methods; 1886 delete _bcis; 1887 } 1888 1889 bool read_reset_retry() { 1890 bool ret = _retry_handshake; 1891 // If we re-execute the handshake this method need to return false 1892 // when the handshake cannot be performed. (E.g. thread terminating) 1893 _retry_handshake = false; 1894 return ret; 1895 } 1896 1897 void do_thread(Thread* th) { 1898 if (!Thread::current()->is_Java_thread()) { 1899 _retry_handshake = true; 1900 return; 1901 } 1902 1903 JavaThread* thread = JavaThread::cast(th); 1904 1905 if (!thread->has_last_Java_frame()) { 1906 return; 1907 } 1908 1909 bool carrier = false; 1910 if (java_lang_VirtualThread::is_instance(_java_thread())) { 1911 // if (thread->vthread() != _java_thread()) // We might be inside a System.executeOnCarrierThread 1912 const ContinuationEntry* ce = thread->vthread_continuation(); 1913 if (ce == nullptr || ce->cont_oop(thread) != java_lang_VirtualThread::continuation(_java_thread())) { 1914 return; // not mounted 1915 } 1916 } else { 1917 carrier = (thread->vthread_continuation() != NULL); 1918 } 1919 1920 const int max_depth = MaxJavaStackTraceDepth; 1921 const bool skip_hidden = !ShowHiddenFrames; 1922 1923 // Pick minimum length that will cover most cases 1924 int init_length = 64; 1925 _methods = new (mtInternal) GrowableArray<Method*>(init_length, mtInternal); 1926 _bcis = new (mtInternal) GrowableArray<int>(init_length, mtInternal); 1927 1928 int total_count = 0; 1929 for (vframeStream vfst(thread, false, false, carrier); // we don't process frames as we don't care about oops 1930 !vfst.at_end() && (max_depth == 0 || max_depth != total_count); 1931 vfst.next()) { 1932 1933 if (skip_hidden && (vfst.method()->is_hidden() || 1934 vfst.method()->is_continuation_enter_intrinsic())) { 1935 continue; 1936 } 1937 1938 _methods->push(vfst.method()); 1939 _bcis->push(vfst.bci()); 1940 total_count++; 1941 } 1942 1943 _depth = total_count; 1944 } 1945 }; 1946 1947 // Handshake with target 1948 ResourceMark rm(THREAD); 1949 HandleMark hm(THREAD); 1950 GetStackTraceClosure gstc(Handle(THREAD, java_thread)); 1951 do { 1952 Handshake::execute(&gstc, &tlh, thread); 1953 } while (gstc.read_reset_retry()); 1954 1955 // Stop if no stack trace is found. 1956 if (gstc._depth == 0) { 1957 return NULL; 1958 } 1959 1960 // Convert to StackTraceElement array 1961 InstanceKlass* k = vmClasses::StackTraceElement_klass(); 1962 assert(k != NULL, "must be loaded in 1.4+"); 1963 if (k->should_be_initialized()) { 1964 k->initialize(CHECK_NULL); 1965 } 1966 objArrayHandle trace = oopFactory::new_objArray_handle(k, gstc._depth, CHECK_NULL); 1967 1968 for (int i = 0; i < gstc._depth; i++) { 1969 methodHandle method(THREAD, gstc._methods->at(i)); 1970 oop element = java_lang_StackTraceElement::create(method, 1971 gstc._bcis->at(i), 1972 CHECK_NULL); 1973 trace->obj_at_put(i, element); 1974 } 1975 1976 return trace(); 1977 } 1978 1979 const char* java_lang_Thread::thread_status_name(oop java_thread) { 1980 oop holder = java_lang_Thread::holder(java_thread); 1981 assert(holder != NULL, "Java Thread not initialized"); 1982 JavaThreadStatus status = java_lang_Thread_FieldHolder::get_thread_status(holder); 1983 switch (status) { 1984 case JavaThreadStatus::NEW : return "NEW"; 1985 case JavaThreadStatus::RUNNABLE : return "RUNNABLE"; 1986 case JavaThreadStatus::SLEEPING : return "TIMED_WAITING (sleeping)"; 1987 case JavaThreadStatus::IN_OBJECT_WAIT : return "WAITING (on object monitor)"; 1988 case JavaThreadStatus::IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)"; 1989 case JavaThreadStatus::PARKED : return "WAITING (parking)"; 1990 case JavaThreadStatus::PARKED_TIMED : return "TIMED_WAITING (parking)"; 1991 case JavaThreadStatus::BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)"; 1992 case JavaThreadStatus::TERMINATED : return "TERMINATED"; 1993 default : return "UNKNOWN"; 1994 }; 1995 } 1996 int java_lang_ThreadGroup::_parent_offset; 1997 int java_lang_ThreadGroup::_name_offset; 1998 int java_lang_ThreadGroup::_maxPriority_offset; 1999 int java_lang_ThreadGroup::_daemon_offset; 2000 2001 oop java_lang_ThreadGroup::parent(oop java_thread_group) { 2002 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop"); 2003 return java_thread_group->obj_field(_parent_offset); 2004 } 2005 2006 // ("name as oop" accessor is not necessary) 2007 2008 const char* java_lang_ThreadGroup::name(oop java_thread_group) { 2009 oop name = java_thread_group->obj_field(_name_offset); 2010 // ThreadGroup.name can be null 2011 if (name != NULL) { 2012 return java_lang_String::as_utf8_string(name); 2013 } 2014 return NULL; 2015 } 2016 2017 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) { 2018 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop"); 2019 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset); 2020 } 2021 2022 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) { 2023 assert(oopDesc::is_oop(java_thread_group), "thread group must be oop"); 2024 return java_thread_group->bool_field(_daemon_offset) != 0; 2025 } 2026 2027 #define THREADGROUP_FIELDS_DO(macro) \ 2028 macro(_parent_offset, k, vmSymbols::parent_name(), threadgroup_signature, false); \ 2029 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ 2030 macro(_maxPriority_offset, k, vmSymbols::maxPriority_name(), int_signature, false); \ 2031 macro(_daemon_offset, k, vmSymbols::daemon_name(), bool_signature, false); 2032 2033 void java_lang_ThreadGroup::compute_offsets() { 2034 assert(_parent_offset == 0, "offsets should be initialized only once"); 2035 2036 InstanceKlass* k = vmClasses::ThreadGroup_klass(); 2037 THREADGROUP_FIELDS_DO(FIELD_COMPUTE_OFFSET); 2038 } 2039 2040 #if INCLUDE_CDS 2041 void java_lang_ThreadGroup::serialize_offsets(SerializeClosure* f) { 2042 THREADGROUP_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 2043 } 2044 #endif 2045 2046 2047 // java_lang_VirtualThread 2048 2049 int java_lang_VirtualThread::static_notify_jvmti_events_offset; 2050 int java_lang_VirtualThread::static_vthread_scope_offset; 2051 int java_lang_VirtualThread::_carrierThread_offset; 2052 int java_lang_VirtualThread::_continuation_offset; 2053 int java_lang_VirtualThread::_state_offset; 2054 2055 #define VTHREAD_FIELDS_DO(macro) \ 2056 macro(static_notify_jvmti_events_offset, k, "notifyJvmtiEvents", bool_signature, true); \ 2057 macro(static_vthread_scope_offset, k, "VTHREAD_SCOPE", continuationscope_signature, true); \ 2058 macro(_carrierThread_offset, k, "carrierThread", thread_signature, false); \ 2059 macro(_continuation_offset, k, "cont", continuation_signature, false); \ 2060 macro(_state_offset, k, "state", int_signature, false) 2061 2062 static bool vthread_notify_jvmti_events = JNI_FALSE; 2063 2064 void java_lang_VirtualThread::compute_offsets() { 2065 InstanceKlass* k = vmClasses::VirtualThread_klass(); 2066 VTHREAD_FIELDS_DO(FIELD_COMPUTE_OFFSET); 2067 } 2068 2069 void java_lang_VirtualThread::init_static_notify_jvmti_events() { 2070 if (vthread_notify_jvmti_events) { 2071 InstanceKlass* ik = vmClasses::VirtualThread_klass(); 2072 oop base = ik->static_field_base_raw(); 2073 base->release_bool_field_put(static_notify_jvmti_events_offset, vthread_notify_jvmti_events); 2074 } 2075 } 2076 2077 bool java_lang_VirtualThread::is_instance(oop obj) { 2078 return obj != NULL && is_subclass(obj->klass()); 2079 } 2080 2081 oop java_lang_VirtualThread::carrier_thread(oop vthread) { 2082 oop thread = vthread->obj_field(_carrierThread_offset); 2083 return thread; 2084 } 2085 2086 oop java_lang_VirtualThread::continuation(oop vthread) { 2087 oop cont = vthread->obj_field(_continuation_offset); 2088 return cont; 2089 } 2090 2091 int java_lang_VirtualThread::state(oop vthread) { 2092 return vthread->int_field_acquire(_state_offset); 2093 } 2094 2095 JavaThreadStatus java_lang_VirtualThread::map_state_to_thread_status(int state) { 2096 JavaThreadStatus status = JavaThreadStatus::NEW; 2097 switch (state) { 2098 case NEW : 2099 status = JavaThreadStatus::NEW; 2100 break; 2101 case STARTED : 2102 case RUNNABLE : 2103 case RUNNABLE_SUSPENDED : 2104 case RUNNING : 2105 case PARKING : 2106 case YIELDING : 2107 status = JavaThreadStatus::RUNNABLE; 2108 break; 2109 case PARKED : 2110 case PARKED_SUSPENDED : 2111 case PINNED : 2112 status = JavaThreadStatus::PARKED; 2113 break; 2114 case TERMINATED : 2115 status = JavaThreadStatus::TERMINATED; 2116 break; 2117 default: 2118 ShouldNotReachHere(); 2119 } 2120 return status; 2121 } 2122 2123 #if INCLUDE_CDS 2124 void java_lang_VirtualThread::serialize_offsets(SerializeClosure* f) { 2125 VTHREAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 2126 } 2127 #endif 2128 2129 bool java_lang_VirtualThread::notify_jvmti_events() { 2130 return vthread_notify_jvmti_events == JNI_TRUE; 2131 } 2132 2133 void java_lang_VirtualThread::set_notify_jvmti_events(bool enable) { 2134 vthread_notify_jvmti_events = enable; 2135 } 2136 2137 2138 // java_lang_Throwable 2139 2140 int java_lang_Throwable::_backtrace_offset; 2141 int java_lang_Throwable::_detailMessage_offset; 2142 int java_lang_Throwable::_stackTrace_offset; 2143 int java_lang_Throwable::_depth_offset; 2144 int java_lang_Throwable::_cause_offset; 2145 int java_lang_Throwable::_static_unassigned_stacktrace_offset; 2146 2147 #define THROWABLE_FIELDS_DO(macro) \ 2148 macro(_backtrace_offset, k, "backtrace", object_signature, false); \ 2149 macro(_detailMessage_offset, k, "detailMessage", string_signature, false); \ 2150 macro(_stackTrace_offset, k, "stackTrace", java_lang_StackTraceElement_array, false); \ 2151 macro(_depth_offset, k, "depth", int_signature, false); \ 2152 macro(_cause_offset, k, "cause", throwable_signature, false); \ 2153 macro(_static_unassigned_stacktrace_offset, k, "UNASSIGNED_STACK", java_lang_StackTraceElement_array, true) 2154 2155 void java_lang_Throwable::compute_offsets() { 2156 InstanceKlass* k = vmClasses::Throwable_klass(); 2157 THROWABLE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 2158 } 2159 2160 #if INCLUDE_CDS 2161 void java_lang_Throwable::serialize_offsets(SerializeClosure* f) { 2162 THROWABLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 2163 } 2164 #endif 2165 2166 oop java_lang_Throwable::unassigned_stacktrace() { 2167 InstanceKlass* ik = vmClasses::Throwable_klass(); 2168 oop base = ik->static_field_base_raw(); 2169 return base->obj_field(_static_unassigned_stacktrace_offset); 2170 } 2171 2172 oop java_lang_Throwable::backtrace(oop throwable) { 2173 return throwable->obj_field_acquire(_backtrace_offset); 2174 } 2175 2176 2177 void java_lang_Throwable::set_backtrace(oop throwable, oop value) { 2178 throwable->release_obj_field_put(_backtrace_offset, value); 2179 } 2180 2181 int java_lang_Throwable::depth(oop throwable) { 2182 return throwable->int_field(_depth_offset); 2183 } 2184 2185 void java_lang_Throwable::set_depth(oop throwable, int value) { 2186 throwable->int_field_put(_depth_offset, value); 2187 } 2188 2189 oop java_lang_Throwable::message(oop throwable) { 2190 return throwable->obj_field(_detailMessage_offset); 2191 } 2192 2193 oop java_lang_Throwable::cause(oop throwable) { 2194 return throwable->obj_field(_cause_offset); 2195 } 2196 2197 // Return Symbol for detailed_message or NULL 2198 Symbol* java_lang_Throwable::detail_message(oop throwable) { 2199 PreserveExceptionMark pm(Thread::current()); 2200 oop detailed_message = java_lang_Throwable::message(throwable); 2201 if (detailed_message != NULL) { 2202 return java_lang_String::as_symbol(detailed_message); 2203 } 2204 return NULL; 2205 } 2206 2207 void java_lang_Throwable::set_message(oop throwable, oop value) { 2208 throwable->obj_field_put(_detailMessage_offset, value); 2209 } 2210 2211 2212 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) { 2213 throwable->obj_field_put(_stackTrace_offset, st_element_array); 2214 } 2215 2216 void java_lang_Throwable::clear_stacktrace(oop throwable) { 2217 set_stacktrace(throwable, NULL); 2218 } 2219 2220 2221 void java_lang_Throwable::print(oop throwable, outputStream* st) { 2222 ResourceMark rm; 2223 Klass* k = throwable->klass(); 2224 assert(k != NULL, "just checking"); 2225 st->print("%s", k->external_name()); 2226 oop msg = message(throwable); 2227 if (msg != NULL) { 2228 st->print(": %s", java_lang_String::as_utf8_string(msg)); 2229 } 2230 } 2231 2232 // After this many redefines, the stack trace is unreliable. 2233 const int MAX_VERSION = USHRT_MAX; 2234 2235 static inline bool version_matches(Method* method, int version) { 2236 assert(version < MAX_VERSION, "version is too big"); 2237 return method != NULL && (method->constants()->version() == version); 2238 } 2239 2240 // This class provides a simple wrapper over the internal structure of 2241 // exception backtrace to insulate users of the backtrace from needing 2242 // to know what it looks like. 2243 // The code of this class is not GC safe. Allocations can only happen 2244 // in expand(). 2245 class BacktraceBuilder: public StackObj { 2246 friend class BacktraceIterator; 2247 private: 2248 Handle _backtrace; 2249 objArrayOop _head; 2250 typeArrayOop _methods; 2251 typeArrayOop _bcis; 2252 objArrayOop _mirrors; 2253 typeArrayOop _names; // Needed to insulate method name against redefinition. 2254 // True if the top frame of the backtrace is omitted because it shall be hidden. 2255 bool _has_hidden_top_frame; 2256 int _index; 2257 NoSafepointVerifier _nsv; 2258 2259 enum { 2260 trace_methods_offset = java_lang_Throwable::trace_methods_offset, 2261 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset, 2262 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset, 2263 trace_names_offset = java_lang_Throwable::trace_names_offset, 2264 trace_conts_offset = java_lang_Throwable::trace_conts_offset, 2265 trace_next_offset = java_lang_Throwable::trace_next_offset, 2266 trace_hidden_offset = java_lang_Throwable::trace_hidden_offset, 2267 trace_size = java_lang_Throwable::trace_size, 2268 trace_chunk_size = java_lang_Throwable::trace_chunk_size 2269 }; 2270 2271 // get info out of chunks 2272 static typeArrayOop get_methods(objArrayHandle chunk) { 2273 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset)); 2274 assert(methods != NULL, "method array should be initialized in backtrace"); 2275 return methods; 2276 } 2277 static typeArrayOop get_bcis(objArrayHandle chunk) { 2278 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); 2279 assert(bcis != NULL, "bci array should be initialized in backtrace"); 2280 return bcis; 2281 } 2282 static objArrayOop get_mirrors(objArrayHandle chunk) { 2283 objArrayOop mirrors = objArrayOop(chunk->obj_at(trace_mirrors_offset)); 2284 assert(mirrors != NULL, "mirror array should be initialized in backtrace"); 2285 return mirrors; 2286 } 2287 static typeArrayOop get_names(objArrayHandle chunk) { 2288 typeArrayOop names = typeArrayOop(chunk->obj_at(trace_names_offset)); 2289 assert(names != NULL, "names array should be initialized in backtrace"); 2290 return names; 2291 } 2292 static bool has_hidden_top_frame(objArrayHandle chunk) { 2293 oop hidden = chunk->obj_at(trace_hidden_offset); 2294 return hidden != NULL; 2295 } 2296 2297 public: 2298 2299 // constructor for new backtrace 2300 BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(false) { 2301 expand(CHECK); 2302 _backtrace = Handle(THREAD, _head); 2303 _index = 0; 2304 } 2305 2306 BacktraceBuilder(Thread* thread, objArrayHandle backtrace) { 2307 _methods = get_methods(backtrace); 2308 _bcis = get_bcis(backtrace); 2309 _mirrors = get_mirrors(backtrace); 2310 _names = get_names(backtrace); 2311 _has_hidden_top_frame = has_hidden_top_frame(backtrace); 2312 assert(_methods->length() == _bcis->length() && 2313 _methods->length() == _mirrors->length() && 2314 _mirrors->length() == _names->length(), 2315 "method and source information arrays should match"); 2316 2317 // head is the preallocated backtrace 2318 _head = backtrace(); 2319 _backtrace = Handle(thread, _head); 2320 _index = 0; 2321 } 2322 2323 void expand(TRAPS) { 2324 objArrayHandle old_head(THREAD, _head); 2325 PauseNoSafepointVerifier pnsv(&_nsv); 2326 2327 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK); 2328 objArrayHandle new_head(THREAD, head); 2329 2330 typeArrayOop methods = oopFactory::new_shortArray(trace_chunk_size, CHECK); 2331 typeArrayHandle new_methods(THREAD, methods); 2332 2333 typeArrayOop bcis = oopFactory::new_intArray(trace_chunk_size, CHECK); 2334 typeArrayHandle new_bcis(THREAD, bcis); 2335 2336 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK); 2337 objArrayHandle new_mirrors(THREAD, mirrors); 2338 2339 typeArrayOop names = oopFactory::new_symbolArray(trace_chunk_size, CHECK); 2340 typeArrayHandle new_names(THREAD, names); 2341 2342 if (!old_head.is_null()) { 2343 old_head->obj_at_put(trace_next_offset, new_head()); 2344 } 2345 new_head->obj_at_put(trace_methods_offset, new_methods()); 2346 new_head->obj_at_put(trace_bcis_offset, new_bcis()); 2347 new_head->obj_at_put(trace_mirrors_offset, new_mirrors()); 2348 new_head->obj_at_put(trace_names_offset, new_names()); 2349 new_head->obj_at_put(trace_hidden_offset, NULL); 2350 2351 _head = new_head(); 2352 _methods = new_methods(); 2353 _bcis = new_bcis(); 2354 _mirrors = new_mirrors(); 2355 _names = new_names(); 2356 _index = 0; 2357 } 2358 2359 oop backtrace() { 2360 return _backtrace(); 2361 } 2362 2363 inline void push(Method* method, int bci, TRAPS) { 2364 // Smear the -1 bci to 0 since the array only holds unsigned 2365 // shorts. The later line number lookup would just smear the -1 2366 // to a 0 even if it could be recorded. 2367 if (bci == SynchronizationEntryBCI) bci = 0; 2368 2369 if (_index >= trace_chunk_size) { 2370 methodHandle mhandle(THREAD, method); 2371 expand(CHECK); 2372 method = mhandle(); 2373 } 2374 2375 _methods->ushort_at_put(_index, method->orig_method_idnum()); 2376 _bcis->int_at_put(_index, Backtrace::merge_bci_and_version(bci, method->constants()->version())); 2377 2378 // Note:this doesn't leak symbols because the mirror in the backtrace keeps the 2379 // klass owning the symbols alive so their refcounts aren't decremented. 2380 Symbol* name = method->name(); 2381 _names->symbol_at_put(_index, name); 2382 2383 // We need to save the mirrors in the backtrace to keep the class 2384 // from being unloaded while we still have this stack trace. 2385 assert(method->method_holder()->java_mirror() != NULL, "never push null for mirror"); 2386 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror()); 2387 2388 _index++; 2389 } 2390 2391 void set_has_hidden_top_frame() { 2392 if (!_has_hidden_top_frame) { 2393 // It would be nice to add java/lang/Boolean::TRUE here 2394 // to indicate that this backtrace has a hidden top frame. 2395 // But this code is used before TRUE is allocated. 2396 // Therefore let's just use an arbitrary legal oop 2397 // available right here. _methods is a short[]. 2398 assert(_methods != NULL, "we need a legal oop"); 2399 _has_hidden_top_frame = true; 2400 _head->obj_at_put(trace_hidden_offset, _methods); 2401 } 2402 } 2403 }; 2404 2405 struct BacktraceElement : public StackObj { 2406 int _method_id; 2407 int _bci; 2408 int _version; 2409 Symbol* _name; 2410 Handle _mirror; 2411 BacktraceElement(Handle mirror, int mid, int version, int bci, Symbol* name) : 2412 _method_id(mid), _bci(bci), _version(version), _name(name), _mirror(mirror) {} 2413 }; 2414 2415 class BacktraceIterator : public StackObj { 2416 int _index; 2417 objArrayHandle _result; 2418 objArrayHandle _mirrors; 2419 typeArrayHandle _methods; 2420 typeArrayHandle _bcis; 2421 typeArrayHandle _names; 2422 2423 void init(objArrayHandle result, Thread* thread) { 2424 // Get method id, bci, version and mirror from chunk 2425 _result = result; 2426 if (_result.not_null()) { 2427 _methods = typeArrayHandle(thread, BacktraceBuilder::get_methods(_result)); 2428 _bcis = typeArrayHandle(thread, BacktraceBuilder::get_bcis(_result)); 2429 _mirrors = objArrayHandle(thread, BacktraceBuilder::get_mirrors(_result)); 2430 _names = typeArrayHandle(thread, BacktraceBuilder::get_names(_result)); 2431 _index = 0; 2432 } 2433 } 2434 public: 2435 BacktraceIterator(objArrayHandle result, Thread* thread) { 2436 init(result, thread); 2437 assert(_methods.is_null() || _methods->length() == java_lang_Throwable::trace_chunk_size, "lengths don't match"); 2438 } 2439 2440 BacktraceElement next(Thread* thread) { 2441 BacktraceElement e (Handle(thread, _mirrors->obj_at(_index)), 2442 _methods->ushort_at(_index), 2443 Backtrace::version_at(_bcis->int_at(_index)), 2444 Backtrace::bci_at(_bcis->int_at(_index)), 2445 _names->symbol_at(_index)); 2446 _index++; 2447 2448 if (_index >= java_lang_Throwable::trace_chunk_size) { 2449 int next_offset = java_lang_Throwable::trace_next_offset; 2450 // Get next chunk 2451 objArrayHandle result (thread, objArrayOop(_result->obj_at(next_offset))); 2452 init(result, thread); 2453 } 2454 return e; 2455 } 2456 2457 bool repeat() { 2458 return _result.not_null() && _mirrors->obj_at(_index) != NULL; 2459 } 2460 }; 2461 2462 2463 // Print stack trace element to resource allocated buffer 2464 static void print_stack_element_to_stream(outputStream* st, Handle mirror, int method_id, 2465 int version, int bci, Symbol* name) { 2466 ResourceMark rm; 2467 2468 // Get strings and string lengths 2469 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(mirror())); 2470 const char* klass_name = holder->external_name(); 2471 int buf_len = (int)strlen(klass_name); 2472 2473 char* method_name = name->as_C_string(); 2474 buf_len += (int)strlen(method_name); 2475 2476 char* source_file_name = NULL; 2477 Symbol* source = Backtrace::get_source_file_name(holder, version); 2478 if (source != NULL) { 2479 source_file_name = source->as_C_string(); 2480 buf_len += (int)strlen(source_file_name); 2481 } 2482 2483 char *module_name = NULL, *module_version = NULL; 2484 ModuleEntry* module = holder->module(); 2485 if (module->is_named()) { 2486 module_name = module->name()->as_C_string(); 2487 buf_len += (int)strlen(module_name); 2488 if (module->version() != NULL) { 2489 module_version = module->version()->as_C_string(); 2490 buf_len += (int)strlen(module_version); 2491 } 2492 } 2493 2494 // Allocate temporary buffer with extra space for formatting and line number 2495 const size_t buf_size = buf_len + 64; 2496 char* buf = NEW_RESOURCE_ARRAY(char, buf_size); 2497 2498 // Print stack trace line in buffer 2499 size_t buf_off = os::snprintf_checked(buf, buf_size, "\tat %s.%s(", klass_name, method_name); 2500 2501 // Print module information 2502 if (module_name != NULL) { 2503 if (module_version != NULL) { 2504 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s@%s/", module_name, module_version); 2505 } else { 2506 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s/", module_name); 2507 } 2508 } 2509 2510 // The method can be NULL if the requested class version is gone 2511 Method* method = holder->method_with_orig_idnum(method_id, version); 2512 if (!version_matches(method, version)) { 2513 strcat(buf, "Redefined)"); 2514 } else { 2515 int line_number = Backtrace::get_line_number(method, bci); 2516 if (line_number == -2) { 2517 strcat(buf, "Native Method)"); 2518 } else { 2519 if (source_file_name != NULL && (line_number != -1)) { 2520 // Sourcename and linenumber 2521 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s:%d)", source_file_name, line_number); 2522 } else if (source_file_name != NULL) { 2523 // Just sourcename 2524 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "%s)", source_file_name); 2525 } else { 2526 // Neither sourcename nor linenumber 2527 buf_off += os::snprintf_checked(buf + buf_off, buf_size - buf_off, "Unknown Source)"); 2528 } 2529 CompiledMethod* nm = method->code(); 2530 if (WizardMode && nm != NULL) { 2531 os::snprintf_checked(buf + buf_off, buf_size - buf_off, "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm); 2532 } 2533 } 2534 } 2535 2536 st->print_cr("%s", buf); 2537 } 2538 2539 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) { 2540 Handle mirror (Thread::current(), method->method_holder()->java_mirror()); 2541 int method_id = method->orig_method_idnum(); 2542 int version = method->constants()->version(); 2543 print_stack_element_to_stream(st, mirror, method_id, version, bci, method->name()); 2544 } 2545 2546 /** 2547 * Print the throwable message and its stack trace plus all causes by walking the 2548 * cause chain. The output looks the same as of Throwable.printStackTrace(). 2549 */ 2550 void java_lang_Throwable::print_stack_trace(Handle throwable, outputStream* st) { 2551 // First, print the message. 2552 print(throwable(), st); 2553 st->cr(); 2554 2555 // Now print the stack trace. 2556 JavaThread* THREAD = JavaThread::current(); // For exception macros. 2557 while (throwable.not_null()) { 2558 objArrayHandle result (THREAD, objArrayOop(backtrace(throwable()))); 2559 if (result.is_null()) { 2560 st->print_raw_cr("\t<<no stack trace available>>"); 2561 return; 2562 } 2563 BacktraceIterator iter(result, THREAD); 2564 2565 while (iter.repeat()) { 2566 BacktraceElement bte = iter.next(THREAD); 2567 print_stack_element_to_stream(st, bte._mirror, bte._method_id, bte._version, bte._bci, bte._name); 2568 } 2569 { 2570 // Call getCause() which doesn't necessarily return the _cause field. 2571 ExceptionMark em(THREAD); 2572 JavaValue cause(T_OBJECT); 2573 JavaCalls::call_virtual(&cause, 2574 throwable, 2575 throwable->klass(), 2576 vmSymbols::getCause_name(), 2577 vmSymbols::void_throwable_signature(), 2578 THREAD); 2579 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. 2580 if (HAS_PENDING_EXCEPTION) { 2581 CLEAR_PENDING_EXCEPTION; 2582 throwable = Handle(); 2583 } else { 2584 throwable = Handle(THREAD, cause.get_oop()); 2585 if (throwable.not_null()) { 2586 st->print("Caused by: "); 2587 print(throwable(), st); 2588 st->cr(); 2589 } 2590 } 2591 } 2592 } 2593 } 2594 2595 /** 2596 * Print the throwable stack trace by calling the Java method java.lang.Throwable.printStackTrace(). 2597 */ 2598 void java_lang_Throwable::java_printStackTrace(Handle throwable, TRAPS) { 2599 assert(throwable->is_a(vmClasses::Throwable_klass()), "Throwable instance expected"); 2600 JavaValue result(T_VOID); 2601 JavaCalls::call_virtual(&result, 2602 throwable, 2603 vmClasses::Throwable_klass(), 2604 vmSymbols::printStackTrace_name(), 2605 vmSymbols::void_method_signature(), 2606 THREAD); 2607 } 2608 2609 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method, TRAPS) { 2610 if (!StackTraceInThrowable) return; 2611 ResourceMark rm(THREAD); 2612 2613 // Start out by clearing the backtrace for this object, in case the VM 2614 // runs out of memory while allocating the stack trace 2615 set_backtrace(throwable(), NULL); 2616 // Clear lazily constructed Java level stacktrace if refilling occurs 2617 // This is unnecessary in 1.7+ but harmless 2618 clear_stacktrace(throwable()); 2619 2620 int max_depth = MaxJavaStackTraceDepth; 2621 JavaThread* thread = THREAD; 2622 2623 BacktraceBuilder bt(CHECK); 2624 2625 // If there is no Java frame just return the method that was being called 2626 // with bci 0 2627 if (!thread->has_last_Java_frame()) { 2628 if (max_depth >= 1 && method() != NULL) { 2629 bt.push(method(), 0, CHECK); 2630 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), 1); 2631 set_depth(throwable(), 1); 2632 set_backtrace(throwable(), bt.backtrace()); 2633 } 2634 return; 2635 } 2636 2637 // Instead of using vframe directly, this version of fill_in_stack_trace 2638 // basically handles everything by hand. This significantly improved the 2639 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows. 2640 // See bug 6333838 for more details. 2641 // The "ASSERT" here is to verify this method generates the exactly same stack 2642 // trace as utilizing vframe. 2643 #ifdef ASSERT 2644 vframeStream st(thread, false /* stop_at_java_call_stub */, false /* process_frames */); 2645 #endif 2646 int total_count = 0; 2647 RegisterMap map(thread, 2648 RegisterMap::UpdateMap::skip, 2649 RegisterMap::ProcessFrames::skip, 2650 RegisterMap::WalkContinuation::include); 2651 int decode_offset = 0; 2652 CompiledMethod* nm = NULL; 2653 bool skip_fillInStackTrace_check = false; 2654 bool skip_throwableInit_check = false; 2655 bool skip_hidden = !ShowHiddenFrames; 2656 bool show_carrier = ShowCarrierFrames; 2657 ContinuationEntry* cont_entry = thread->last_continuation(); 2658 for (frame fr = thread->last_frame(); max_depth == 0 || max_depth != total_count;) { 2659 Method* method = NULL; 2660 int bci = 0; 2661 2662 // Compiled java method case. 2663 if (decode_offset != 0) { 2664 DebugInfoReadStream stream(nm, decode_offset); 2665 decode_offset = stream.read_int(); 2666 method = (Method*)nm->metadata_at(stream.read_int()); 2667 bci = stream.read_bci(); 2668 } else { 2669 if (fr.is_first_frame()) break; 2670 2671 if (Continuation::is_continuation_enterSpecial(fr)) { 2672 assert(cont_entry == Continuation::get_continuation_entry_for_entry_frame(thread, fr), ""); 2673 if (!show_carrier && cont_entry->is_virtual_thread()) { 2674 break; 2675 } 2676 cont_entry = cont_entry->parent(); 2677 } 2678 2679 address pc = fr.pc(); 2680 if (fr.is_interpreted_frame()) { 2681 address bcp; 2682 if (!map.in_cont()) { 2683 bcp = fr.interpreter_frame_bcp(); 2684 method = fr.interpreter_frame_method(); 2685 } else { 2686 bcp = map.stack_chunk()->interpreter_frame_bcp(fr); 2687 method = map.stack_chunk()->interpreter_frame_method(fr); 2688 } 2689 bci = method->bci_from(bcp); 2690 fr = fr.sender(&map); 2691 } else { 2692 CodeBlob* cb = fr.cb(); 2693 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL 2694 // but non nmethod 2695 fr = fr.sender(&map); 2696 if (cb == NULL || !cb->is_compiled()) { 2697 continue; 2698 } 2699 nm = cb->as_compiled_method(); 2700 assert(nm->method() != NULL, "must be"); 2701 if (nm->method()->is_native()) { 2702 method = nm->method(); 2703 bci = 0; 2704 } else { 2705 PcDesc* pd = nm->pc_desc_at(pc); 2706 decode_offset = pd->scope_decode_offset(); 2707 // if decode_offset is not equal to 0, it will execute the 2708 // "compiled java method case" at the beginning of the loop. 2709 continue; 2710 } 2711 } 2712 } 2713 #ifdef ASSERT 2714 if (!st.at_end()) { // TODO LOOM remove once we show only vthread trace 2715 assert(st.method() == method && st.bci() == bci, "Wrong stack trace"); 2716 st.next(); 2717 } 2718 #endif 2719 2720 // the format of the stacktrace will be: 2721 // - 1 or more fillInStackTrace frames for the exception class (skipped) 2722 // - 0 or more <init> methods for the exception class (skipped) 2723 // - rest of the stack 2724 2725 if (!skip_fillInStackTrace_check) { 2726 if (method->name() == vmSymbols::fillInStackTrace_name() && 2727 throwable->is_a(method->method_holder())) { 2728 continue; 2729 } 2730 else { 2731 skip_fillInStackTrace_check = true; // gone past them all 2732 } 2733 } 2734 if (!skip_throwableInit_check) { 2735 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering"); 2736 2737 // skip <init> methods of the exception class and superclasses 2738 // This is similar to classic VM. 2739 if (method->name() == vmSymbols::object_initializer_name() && 2740 throwable->is_a(method->method_holder())) { 2741 continue; 2742 } else { 2743 // there are none or we've seen them all - either way stop checking 2744 skip_throwableInit_check = true; 2745 } 2746 } 2747 if (method->is_hidden() || method->is_continuation_enter_intrinsic()) { 2748 if (skip_hidden) { 2749 if (total_count == 0) { 2750 // The top frame will be hidden from the stack trace. 2751 bt.set_has_hidden_top_frame(); 2752 } 2753 continue; 2754 } 2755 } 2756 2757 bt.push(method, bci, CHECK); 2758 total_count++; 2759 } 2760 2761 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), total_count); 2762 2763 // Put completed stack trace into throwable object 2764 set_backtrace(throwable(), bt.backtrace()); 2765 set_depth(throwable(), total_count); 2766 } 2767 2768 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, const methodHandle& method) { 2769 // No-op if stack trace is disabled 2770 if (!StackTraceInThrowable) { 2771 return; 2772 } 2773 2774 // Disable stack traces for some preallocated out of memory errors 2775 if (!Universe::should_fill_in_stack_trace(throwable)) { 2776 return; 2777 } 2778 2779 JavaThread* THREAD = JavaThread::current(); // For exception macros. 2780 PreserveExceptionMark pm(THREAD); 2781 2782 fill_in_stack_trace(throwable, method, THREAD); 2783 // Ignore exceptions thrown during stack trace filling (OOM) and reinstall the 2784 // original exception via the PreserveExceptionMark destructor. 2785 CLEAR_PENDING_EXCEPTION; 2786 } 2787 2788 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) { 2789 // Allocate stack trace - backtrace is created but not filled in 2790 2791 // No-op if stack trace is disabled 2792 if (!StackTraceInThrowable) return; 2793 BacktraceBuilder bt(CHECK); // creates a backtrace 2794 set_backtrace(throwable(), bt.backtrace()); 2795 } 2796 2797 2798 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) { 2799 // Fill in stack trace into preallocated backtrace (no GC) 2800 2801 // No-op if stack trace is disabled 2802 if (!StackTraceInThrowable) return; 2803 2804 assert(throwable->is_a(vmClasses::Throwable_klass()), "sanity check"); 2805 2806 JavaThread* THREAD = JavaThread::current(); // For exception macros. 2807 2808 objArrayHandle backtrace (THREAD, (objArrayOop)java_lang_Throwable::backtrace(throwable())); 2809 assert(backtrace.not_null(), "backtrace should have been preallocated"); 2810 2811 ResourceMark rm(THREAD); 2812 vframeStream st(THREAD, false /* stop_at_java_call_stub */, false /* process_frames */); 2813 2814 BacktraceBuilder bt(THREAD, backtrace); 2815 2816 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init 2817 // methods as preallocated errors aren't created by "java" code. 2818 2819 // fill in as much stack trace as possible 2820 int chunk_count = 0; 2821 for (;!st.at_end(); st.next()) { 2822 bt.push(st.method(), st.bci(), CHECK); 2823 chunk_count++; 2824 2825 // Bail-out for deep stacks 2826 if (chunk_count >= trace_chunk_size) break; 2827 } 2828 set_depth(throwable(), chunk_count); 2829 log_info(stacktrace)("%s, %d", throwable->klass()->external_name(), chunk_count); 2830 2831 // We support the Throwable immutability protocol defined for Java 7. 2832 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace()); 2833 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized"); 2834 } 2835 2836 void java_lang_Throwable::get_stack_trace_elements(int depth, Handle backtrace, 2837 objArrayHandle stack_trace_array_h, TRAPS) { 2838 2839 if (backtrace.is_null() || stack_trace_array_h.is_null()) { 2840 THROW(vmSymbols::java_lang_NullPointerException()); 2841 } 2842 2843 assert(stack_trace_array_h->is_objArray(), "Stack trace array should be an array of StackTraceElenent"); 2844 2845 if (stack_trace_array_h->length() != depth) { 2846 THROW(vmSymbols::java_lang_IndexOutOfBoundsException()); 2847 } 2848 2849 objArrayHandle result(THREAD, objArrayOop(backtrace())); 2850 BacktraceIterator iter(result, THREAD); 2851 2852 int index = 0; 2853 while (iter.repeat()) { 2854 BacktraceElement bte = iter.next(THREAD); 2855 2856 Handle stack_trace_element(THREAD, stack_trace_array_h->obj_at(index++)); 2857 2858 if (stack_trace_element.is_null()) { 2859 THROW(vmSymbols::java_lang_NullPointerException()); 2860 } 2861 2862 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror())); 2863 methodHandle method (THREAD, holder->method_with_orig_idnum(bte._method_id, bte._version)); 2864 2865 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, 2866 method, 2867 bte._version, 2868 bte._bci, 2869 bte._name, 2870 CHECK); 2871 } 2872 } 2873 2874 Handle java_lang_Throwable::get_cause_with_stack_trace(Handle throwable, TRAPS) { 2875 // Call to JVM to fill in the stack trace and clear declaringClassObject to 2876 // not keep classes alive in the stack trace. 2877 // call this: public StackTraceElement[] getStackTrace() 2878 assert(throwable.not_null(), "shouldn't be"); 2879 2880 JavaValue result(T_ARRAY); 2881 JavaCalls::call_virtual(&result, throwable, 2882 vmClasses::Throwable_klass(), 2883 vmSymbols::getStackTrace_name(), 2884 vmSymbols::getStackTrace_signature(), 2885 CHECK_NH); 2886 Handle stack_trace(THREAD, result.get_oop()); 2887 assert(stack_trace->is_objArray(), "Should be an array"); 2888 2889 // Throw ExceptionInInitializerError as the cause with this exception in 2890 // the message and stack trace. 2891 2892 // Now create the message with the original exception and thread name. 2893 Symbol* message = java_lang_Throwable::detail_message(throwable()); 2894 ResourceMark rm(THREAD); 2895 stringStream st; 2896 st.print("Exception %s%s ", throwable()->klass()->name()->as_klass_external_name(), 2897 message == nullptr ? "" : ":"); 2898 if (message == NULL) { 2899 st.print("[in thread \"%s\"]", THREAD->name()); 2900 } else { 2901 st.print("%s [in thread \"%s\"]", message->as_C_string(), THREAD->name()); 2902 } 2903 2904 Symbol* exception_name = vmSymbols::java_lang_ExceptionInInitializerError(); 2905 Handle h_cause = Exceptions::new_exception(THREAD, exception_name, st.as_string()); 2906 2907 // If new_exception returns a different exception while creating the exception, return null. 2908 if (h_cause->klass()->name() != exception_name) { 2909 log_info(class, init)("Exception thrown while saving initialization exception %s", 2910 h_cause->klass()->external_name()); 2911 return Handle(); 2912 } 2913 java_lang_Throwable::set_stacktrace(h_cause(), stack_trace()); 2914 // Clear backtrace because the stacktrace should be used instead. 2915 set_backtrace(h_cause(), NULL); 2916 return h_cause; 2917 } 2918 2919 bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) { 2920 JavaThread* current = JavaThread::current(); 2921 objArrayHandle result(current, objArrayOop(backtrace(throwable))); 2922 BacktraceIterator iter(result, current); 2923 // No backtrace available. 2924 if (!iter.repeat()) return false; 2925 2926 // If the exception happened in a frame that has been hidden, i.e., 2927 // omitted from the back trace, we can not compute the message. 2928 oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset); 2929 if (hidden != NULL) { 2930 return false; 2931 } 2932 2933 // Get first backtrace element. 2934 BacktraceElement bte = iter.next(current); 2935 2936 InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror())); 2937 assert(holder != NULL, "first element should be non-null"); 2938 Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version); 2939 2940 // Original version is no longer available. 2941 if (m == NULL || !version_matches(m, bte._version)) { 2942 return false; 2943 } 2944 2945 *method = m; 2946 *bci = bte._bci; 2947 return true; 2948 } 2949 2950 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) { 2951 // Allocate java.lang.StackTraceElement instance 2952 InstanceKlass* k = vmClasses::StackTraceElement_klass(); 2953 assert(k != NULL, "must be loaded in 1.4+"); 2954 if (k->should_be_initialized()) { 2955 k->initialize(CHECK_NULL); 2956 } 2957 2958 Handle element = k->allocate_instance_handle(CHECK_NULL); 2959 2960 int version = method->constants()->version(); 2961 fill_in(element, method->method_holder(), method, version, bci, method->name(), CHECK_NULL); 2962 return element(); 2963 } 2964 2965 void java_lang_StackTraceElement::fill_in(Handle element, 2966 InstanceKlass* holder, const methodHandle& method, 2967 int version, int bci, Symbol* name, TRAPS) { 2968 assert(element->is_a(vmClasses::StackTraceElement_klass()), "sanity check"); 2969 2970 ResourceMark rm(THREAD); 2971 HandleMark hm(THREAD); 2972 2973 // Fill in class name 2974 Handle java_class(THREAD, holder->java_mirror()); 2975 oop classname = java_lang_Class::name(java_class, CHECK); 2976 java_lang_StackTraceElement::set_declaringClass(element(), classname); 2977 java_lang_StackTraceElement::set_declaringClassObject(element(), java_class()); 2978 2979 oop loader = holder->class_loader(); 2980 if (loader != NULL) { 2981 oop loader_name = java_lang_ClassLoader::name(loader); 2982 if (loader_name != NULL) 2983 java_lang_StackTraceElement::set_classLoaderName(element(), loader_name); 2984 } 2985 2986 // Fill in method name 2987 oop methodname = StringTable::intern(name, CHECK); 2988 java_lang_StackTraceElement::set_methodName(element(), methodname); 2989 2990 // Fill in module name and version 2991 ModuleEntry* module = holder->module(); 2992 if (module->is_named()) { 2993 oop module_name = StringTable::intern(module->name(), CHECK); 2994 java_lang_StackTraceElement::set_moduleName(element(), module_name); 2995 oop module_version; 2996 if (module->version() != NULL) { 2997 module_version = StringTable::intern(module->version(), CHECK); 2998 } else { 2999 module_version = NULL; 3000 } 3001 java_lang_StackTraceElement::set_moduleVersion(element(), module_version); 3002 } 3003 3004 if (method() == NULL || !version_matches(method(), version)) { 3005 // The method was redefined, accurate line number information isn't available 3006 java_lang_StackTraceElement::set_fileName(element(), NULL); 3007 java_lang_StackTraceElement::set_lineNumber(element(), -1); 3008 } else { 3009 Symbol* source; 3010 oop source_file; 3011 int line_number; 3012 decode_file_and_line(java_class, holder, version, method, bci, source, source_file, line_number, CHECK); 3013 3014 java_lang_StackTraceElement::set_fileName(element(), source_file); 3015 java_lang_StackTraceElement::set_lineNumber(element(), line_number); 3016 } 3017 } 3018 3019 void java_lang_StackTraceElement::decode_file_and_line(Handle java_class, 3020 InstanceKlass* holder, 3021 int version, 3022 const methodHandle& method, 3023 int bci, 3024 Symbol*& source, 3025 oop& source_file, 3026 int& line_number, TRAPS) { 3027 // Fill in source file name and line number. 3028 source = Backtrace::get_source_file_name(holder, version); 3029 source_file = java_lang_Class::source_file(java_class()); 3030 if (source != NULL) { 3031 // Class was not redefined. We can trust its cache if set, 3032 // else we have to initialize it. 3033 if (source_file == NULL) { 3034 source_file = StringTable::intern(source, CHECK); 3035 java_lang_Class::set_source_file(java_class(), source_file); 3036 } 3037 } else { 3038 // Class was redefined. Dump the cache if it was set. 3039 if (source_file != NULL) { 3040 source_file = NULL; 3041 java_lang_Class::set_source_file(java_class(), source_file); 3042 } 3043 } 3044 line_number = Backtrace::get_line_number(method(), bci); 3045 } 3046 3047 #if INCLUDE_JVMCI 3048 void java_lang_StackTraceElement::decode(const methodHandle& method, int bci, 3049 Symbol*& filename, int& line_number, TRAPS) { 3050 ResourceMark rm(THREAD); 3051 HandleMark hm(THREAD); 3052 3053 filename = NULL; 3054 line_number = -1; 3055 3056 oop source_file; 3057 int version = method->constants()->version(); 3058 InstanceKlass* holder = method->method_holder(); 3059 Handle java_class(THREAD, holder->java_mirror()); 3060 decode_file_and_line(java_class, holder, version, method, bci, filename, source_file, line_number, CHECK); 3061 } 3062 #endif // INCLUDE_JVMCI 3063 3064 // java_lang_StackFrameInfo 3065 3066 int java_lang_StackFrameInfo::_memberName_offset; 3067 int java_lang_StackFrameInfo::_bci_offset; 3068 int java_lang_StackFrameInfo::_version_offset; 3069 int java_lang_StackFrameInfo::_contScope_offset; 3070 3071 #define STACKFRAMEINFO_FIELDS_DO(macro) \ 3072 macro(_memberName_offset, k, "memberName", object_signature, false); \ 3073 macro(_bci_offset, k, "bci", int_signature, false); \ 3074 macro(_contScope_offset, k, "contScope", continuationscope_signature, false) 3075 3076 void java_lang_StackFrameInfo::compute_offsets() { 3077 InstanceKlass* k = vmClasses::StackFrameInfo_klass(); 3078 STACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3079 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 3080 } 3081 3082 #if INCLUDE_CDS 3083 void java_lang_StackFrameInfo::serialize_offsets(SerializeClosure* f) { 3084 STACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3085 STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); 3086 } 3087 #endif 3088 3089 Method* java_lang_StackFrameInfo::get_method(Handle stackFrame, InstanceKlass* holder, TRAPS) { 3090 HandleMark hm(THREAD); 3091 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset)); 3092 Method* method = (Method*)java_lang_invoke_MemberName::vmtarget(mname()); 3093 // we should expand MemberName::name when Throwable uses StackTrace 3094 // MethodHandles::expand_MemberName(mname, MethodHandles::_suppress_defc|MethodHandles::_suppress_type, CHECK_NULL); 3095 return method; 3096 } 3097 3098 void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const methodHandle& method, int bci, oop cont, TRAPS) { 3099 // set Method* or mid/cpref 3100 HandleMark hm(THREAD); 3101 Handle mname(THREAD, stackFrame->obj_field(_memberName_offset)); 3102 Handle cont_h (THREAD, cont); 3103 InstanceKlass* ik = method->method_holder(); 3104 CallInfo info(method(), ik, CHECK); 3105 MethodHandles::init_method_MemberName(mname, info); 3106 // set bci 3107 java_lang_StackFrameInfo::set_bci(stackFrame(), bci); 3108 // method may be redefined; store the version 3109 int version = method->constants()->version(); 3110 assert((jushort)version == version, "version should be short"); 3111 java_lang_StackFrameInfo::set_version(stackFrame(), (short)version); 3112 3113 oop contScope = cont_h() != NULL ? jdk_internal_vm_Continuation::scope(cont_h()) : (oop)NULL; 3114 java_lang_StackFrameInfo::set_contScope(stackFrame(), contScope); 3115 } 3116 3117 void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) { 3118 ResourceMark rm(THREAD); 3119 HandleMark hm(THREAD); 3120 Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset)); 3121 Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname())); 3122 InstanceKlass* holder = InstanceKlass::cast(clazz); 3123 Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK); 3124 3125 short version = stackFrame->short_field(_version_offset); 3126 int bci = stackFrame->int_field(_bci_offset); 3127 Symbol* name = method->name(); 3128 java_lang_StackTraceElement::fill_in(stack_trace_element, holder, methodHandle(THREAD, method), version, bci, name, CHECK); 3129 } 3130 3131 void java_lang_StackFrameInfo::set_version(oop element, short value) { 3132 element->short_field_put(_version_offset, value); 3133 } 3134 3135 void java_lang_StackFrameInfo::set_bci(oop element, int value) { 3136 assert(value >= 0 && value < max_jushort, "must be a valid bci value"); 3137 element->int_field_put(_bci_offset, value); 3138 } 3139 3140 void java_lang_StackFrameInfo::set_contScope(oop element, oop value) { 3141 element->obj_field_put(_contScope_offset, value); 3142 } 3143 3144 int java_lang_LiveStackFrameInfo::_monitors_offset; 3145 int java_lang_LiveStackFrameInfo::_locals_offset; 3146 int java_lang_LiveStackFrameInfo::_operands_offset; 3147 int java_lang_LiveStackFrameInfo::_mode_offset; 3148 3149 #define LIVESTACKFRAMEINFO_FIELDS_DO(macro) \ 3150 macro(_monitors_offset, k, "monitors", object_array_signature, false); \ 3151 macro(_locals_offset, k, "locals", object_array_signature, false); \ 3152 macro(_operands_offset, k, "operands", object_array_signature, false); \ 3153 macro(_mode_offset, k, "mode", int_signature, false) 3154 3155 void java_lang_LiveStackFrameInfo::compute_offsets() { 3156 InstanceKlass* k = vmClasses::LiveStackFrameInfo_klass(); 3157 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3158 } 3159 3160 #if INCLUDE_CDS 3161 void java_lang_LiveStackFrameInfo::serialize_offsets(SerializeClosure* f) { 3162 LIVESTACKFRAMEINFO_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3163 } 3164 #endif 3165 3166 void java_lang_LiveStackFrameInfo::set_monitors(oop element, oop value) { 3167 element->obj_field_put(_monitors_offset, value); 3168 } 3169 3170 void java_lang_LiveStackFrameInfo::set_locals(oop element, oop value) { 3171 element->obj_field_put(_locals_offset, value); 3172 } 3173 3174 void java_lang_LiveStackFrameInfo::set_operands(oop element, oop value) { 3175 element->obj_field_put(_operands_offset, value); 3176 } 3177 3178 void java_lang_LiveStackFrameInfo::set_mode(oop element, int value) { 3179 element->int_field_put(_mode_offset, value); 3180 } 3181 3182 3183 // java_lang_AccessibleObject 3184 3185 int java_lang_reflect_AccessibleObject::_override_offset; 3186 3187 #define ACCESSIBLEOBJECT_FIELDS_DO(macro) \ 3188 macro(_override_offset, k, "override", bool_signature, false) 3189 3190 void java_lang_reflect_AccessibleObject::compute_offsets() { 3191 InstanceKlass* k = vmClasses::reflect_AccessibleObject_klass(); 3192 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3193 } 3194 3195 #if INCLUDE_CDS 3196 void java_lang_reflect_AccessibleObject::serialize_offsets(SerializeClosure* f) { 3197 ACCESSIBLEOBJECT_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3198 } 3199 #endif 3200 3201 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) { 3202 return (jboolean) reflect->bool_field(_override_offset); 3203 } 3204 3205 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) { 3206 reflect->bool_field_put(_override_offset, (int) value); 3207 } 3208 3209 // java_lang_reflect_Method 3210 3211 int java_lang_reflect_Method::_clazz_offset; 3212 int java_lang_reflect_Method::_name_offset; 3213 int java_lang_reflect_Method::_returnType_offset; 3214 int java_lang_reflect_Method::_parameterTypes_offset; 3215 int java_lang_reflect_Method::_exceptionTypes_offset; 3216 int java_lang_reflect_Method::_slot_offset; 3217 int java_lang_reflect_Method::_modifiers_offset; 3218 int java_lang_reflect_Method::_signature_offset; 3219 int java_lang_reflect_Method::_annotations_offset; 3220 int java_lang_reflect_Method::_parameter_annotations_offset; 3221 int java_lang_reflect_Method::_annotation_default_offset; 3222 3223 #define METHOD_FIELDS_DO(macro) \ 3224 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \ 3225 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ 3226 macro(_returnType_offset, k, vmSymbols::returnType_name(), class_signature, false); \ 3227 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \ 3228 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \ 3229 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \ 3230 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \ 3231 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \ 3232 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \ 3233 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); \ 3234 macro(_annotation_default_offset, k, vmSymbols::annotation_default_name(), byte_array_signature, false); 3235 3236 void java_lang_reflect_Method::compute_offsets() { 3237 InstanceKlass* k = vmClasses::reflect_Method_klass(); 3238 METHOD_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3239 } 3240 3241 #if INCLUDE_CDS 3242 void java_lang_reflect_Method::serialize_offsets(SerializeClosure* f) { 3243 METHOD_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3244 } 3245 #endif 3246 3247 Handle java_lang_reflect_Method::create(TRAPS) { 3248 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 3249 Klass* klass = vmClasses::reflect_Method_klass(); 3250 // This class is eagerly initialized during VM initialization, since we keep a reference 3251 // to one of the methods 3252 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized"); 3253 return InstanceKlass::cast(klass)->allocate_instance_handle(THREAD); 3254 } 3255 3256 oop java_lang_reflect_Method::clazz(oop reflect) { 3257 return reflect->obj_field(_clazz_offset); 3258 } 3259 3260 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) { 3261 reflect->obj_field_put(_clazz_offset, value); 3262 } 3263 3264 int java_lang_reflect_Method::slot(oop reflect) { 3265 return reflect->int_field(_slot_offset); 3266 } 3267 3268 void java_lang_reflect_Method::set_slot(oop reflect, int value) { 3269 reflect->int_field_put(_slot_offset, value); 3270 } 3271 3272 void java_lang_reflect_Method::set_name(oop method, oop value) { 3273 method->obj_field_put(_name_offset, value); 3274 } 3275 3276 oop java_lang_reflect_Method::return_type(oop method) { 3277 return method->obj_field(_returnType_offset); 3278 } 3279 3280 void java_lang_reflect_Method::set_return_type(oop method, oop value) { 3281 method->obj_field_put(_returnType_offset, value); 3282 } 3283 3284 oop java_lang_reflect_Method::parameter_types(oop method) { 3285 return method->obj_field(_parameterTypes_offset); 3286 } 3287 3288 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) { 3289 method->obj_field_put(_parameterTypes_offset, value); 3290 } 3291 3292 void java_lang_reflect_Method::set_exception_types(oop method, oop value) { 3293 method->obj_field_put(_exceptionTypes_offset, value); 3294 } 3295 3296 void java_lang_reflect_Method::set_modifiers(oop method, int value) { 3297 method->int_field_put(_modifiers_offset, value); 3298 } 3299 3300 void java_lang_reflect_Method::set_signature(oop method, oop value) { 3301 method->obj_field_put(_signature_offset, value); 3302 } 3303 3304 void java_lang_reflect_Method::set_annotations(oop method, oop value) { 3305 method->obj_field_put(_annotations_offset, value); 3306 } 3307 3308 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) { 3309 method->obj_field_put(_parameter_annotations_offset, value); 3310 } 3311 3312 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) { 3313 method->obj_field_put(_annotation_default_offset, value); 3314 } 3315 3316 int java_lang_reflect_Constructor::_clazz_offset; 3317 int java_lang_reflect_Constructor::_parameterTypes_offset; 3318 int java_lang_reflect_Constructor::_exceptionTypes_offset; 3319 int java_lang_reflect_Constructor::_slot_offset; 3320 int java_lang_reflect_Constructor::_modifiers_offset; 3321 int java_lang_reflect_Constructor::_signature_offset; 3322 int java_lang_reflect_Constructor::_annotations_offset; 3323 int java_lang_reflect_Constructor::_parameter_annotations_offset; 3324 3325 #define CONSTRUCTOR_FIELDS_DO(macro) \ 3326 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \ 3327 macro(_parameterTypes_offset, k, vmSymbols::parameterTypes_name(), class_array_signature, false); \ 3328 macro(_exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), class_array_signature, false); \ 3329 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \ 3330 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \ 3331 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \ 3332 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); \ 3333 macro(_parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), byte_array_signature, false); 3334 3335 void java_lang_reflect_Constructor::compute_offsets() { 3336 InstanceKlass* k = vmClasses::reflect_Constructor_klass(); 3337 CONSTRUCTOR_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3338 } 3339 3340 #if INCLUDE_CDS 3341 void java_lang_reflect_Constructor::serialize_offsets(SerializeClosure* f) { 3342 CONSTRUCTOR_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3343 } 3344 #endif 3345 3346 Handle java_lang_reflect_Constructor::create(TRAPS) { 3347 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 3348 Symbol* name = vmSymbols::java_lang_reflect_Constructor(); 3349 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); 3350 InstanceKlass* ik = InstanceKlass::cast(k); 3351 // Ensure it is initialized 3352 ik->initialize(CHECK_NH); 3353 return ik->allocate_instance_handle(THREAD); 3354 } 3355 3356 oop java_lang_reflect_Constructor::clazz(oop reflect) { 3357 return reflect->obj_field(_clazz_offset); 3358 } 3359 3360 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) { 3361 reflect->obj_field_put(_clazz_offset, value); 3362 } 3363 3364 oop java_lang_reflect_Constructor::parameter_types(oop constructor) { 3365 return constructor->obj_field(_parameterTypes_offset); 3366 } 3367 3368 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) { 3369 constructor->obj_field_put(_parameterTypes_offset, value); 3370 } 3371 3372 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) { 3373 constructor->obj_field_put(_exceptionTypes_offset, value); 3374 } 3375 3376 int java_lang_reflect_Constructor::slot(oop reflect) { 3377 return reflect->int_field(_slot_offset); 3378 } 3379 3380 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) { 3381 reflect->int_field_put(_slot_offset, value); 3382 } 3383 3384 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) { 3385 constructor->int_field_put(_modifiers_offset, value); 3386 } 3387 3388 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) { 3389 constructor->obj_field_put(_signature_offset, value); 3390 } 3391 3392 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) { 3393 constructor->obj_field_put(_annotations_offset, value); 3394 } 3395 3396 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) { 3397 method->obj_field_put(_parameter_annotations_offset, value); 3398 } 3399 3400 int java_lang_reflect_Field::_clazz_offset; 3401 int java_lang_reflect_Field::_name_offset; 3402 int java_lang_reflect_Field::_type_offset; 3403 int java_lang_reflect_Field::_slot_offset; 3404 int java_lang_reflect_Field::_modifiers_offset; 3405 int java_lang_reflect_Field::_trusted_final_offset; 3406 int java_lang_reflect_Field::_signature_offset; 3407 int java_lang_reflect_Field::_annotations_offset; 3408 3409 #define FIELD_FIELDS_DO(macro) \ 3410 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \ 3411 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ 3412 macro(_type_offset, k, vmSymbols::type_name(), class_signature, false); \ 3413 macro(_slot_offset, k, vmSymbols::slot_name(), int_signature, false); \ 3414 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \ 3415 macro(_trusted_final_offset, k, vmSymbols::trusted_final_name(), bool_signature, false); \ 3416 macro(_signature_offset, k, vmSymbols::signature_name(), string_signature, false); \ 3417 macro(_annotations_offset, k, vmSymbols::annotations_name(), byte_array_signature, false); 3418 3419 void java_lang_reflect_Field::compute_offsets() { 3420 InstanceKlass* k = vmClasses::reflect_Field_klass(); 3421 FIELD_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3422 } 3423 3424 #if INCLUDE_CDS 3425 void java_lang_reflect_Field::serialize_offsets(SerializeClosure* f) { 3426 FIELD_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3427 } 3428 #endif 3429 3430 Handle java_lang_reflect_Field::create(TRAPS) { 3431 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 3432 Symbol* name = vmSymbols::java_lang_reflect_Field(); 3433 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); 3434 InstanceKlass* ik = InstanceKlass::cast(k); 3435 // Ensure it is initialized 3436 ik->initialize(CHECK_NH); 3437 return ik->allocate_instance_handle(THREAD); 3438 } 3439 3440 oop java_lang_reflect_Field::clazz(oop reflect) { 3441 return reflect->obj_field(_clazz_offset); 3442 } 3443 3444 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) { 3445 reflect->obj_field_put(_clazz_offset, value); 3446 } 3447 3448 oop java_lang_reflect_Field::name(oop field) { 3449 return field->obj_field(_name_offset); 3450 } 3451 3452 void java_lang_reflect_Field::set_name(oop field, oop value) { 3453 field->obj_field_put(_name_offset, value); 3454 } 3455 3456 oop java_lang_reflect_Field::type(oop field) { 3457 return field->obj_field(_type_offset); 3458 } 3459 3460 void java_lang_reflect_Field::set_type(oop field, oop value) { 3461 field->obj_field_put(_type_offset, value); 3462 } 3463 3464 int java_lang_reflect_Field::slot(oop reflect) { 3465 return reflect->int_field(_slot_offset); 3466 } 3467 3468 void java_lang_reflect_Field::set_slot(oop reflect, int value) { 3469 reflect->int_field_put(_slot_offset, value); 3470 } 3471 3472 int java_lang_reflect_Field::modifiers(oop field) { 3473 return field->int_field(_modifiers_offset); 3474 } 3475 3476 void java_lang_reflect_Field::set_modifiers(oop field, int value) { 3477 field->int_field_put(_modifiers_offset, value); 3478 } 3479 3480 void java_lang_reflect_Field::set_trusted_final(oop field) { 3481 field->bool_field_put(_trusted_final_offset, true); 3482 } 3483 3484 void java_lang_reflect_Field::set_signature(oop field, oop value) { 3485 field->obj_field_put(_signature_offset, value); 3486 } 3487 3488 void java_lang_reflect_Field::set_annotations(oop field, oop value) { 3489 field->obj_field_put(_annotations_offset, value); 3490 } 3491 3492 oop java_lang_reflect_RecordComponent::create(InstanceKlass* holder, RecordComponent* component, TRAPS) { 3493 // Allocate java.lang.reflect.RecordComponent instance 3494 HandleMark hm(THREAD); 3495 InstanceKlass* ik = vmClasses::RecordComponent_klass(); 3496 assert(ik != NULL, "must be loaded"); 3497 ik->initialize(CHECK_NULL); 3498 3499 Handle element = ik->allocate_instance_handle(CHECK_NULL); 3500 3501 Handle decl_class(THREAD, holder->java_mirror()); 3502 java_lang_reflect_RecordComponent::set_clazz(element(), decl_class()); 3503 3504 Symbol* name = holder->constants()->symbol_at(component->name_index()); // name_index is a utf8 3505 oop component_name = StringTable::intern(name, CHECK_NULL); 3506 java_lang_reflect_RecordComponent::set_name(element(), component_name); 3507 3508 Symbol* type = holder->constants()->symbol_at(component->descriptor_index()); 3509 Handle component_type_h = 3510 SystemDictionary::find_java_mirror_for_type(type, holder, SignatureStream::NCDFError, CHECK_NULL); 3511 java_lang_reflect_RecordComponent::set_type(element(), component_type_h()); 3512 3513 Method* accessor_method = NULL; 3514 { 3515 // Prepend "()" to type to create the full method signature. 3516 ResourceMark rm(THREAD); 3517 int sig_len = type->utf8_length() + 3; // "()" and null char 3518 char* sig = NEW_RESOURCE_ARRAY(char, sig_len); 3519 jio_snprintf(sig, sig_len, "%c%c%s", JVM_SIGNATURE_FUNC, JVM_SIGNATURE_ENDFUNC, type->as_C_string()); 3520 TempNewSymbol full_sig = SymbolTable::new_symbol(sig); 3521 accessor_method = holder->find_instance_method(name, full_sig, Klass::PrivateLookupMode::find); 3522 } 3523 3524 if (accessor_method != NULL) { 3525 methodHandle method(THREAD, accessor_method); 3526 oop m = Reflection::new_method(method, false, CHECK_NULL); 3527 java_lang_reflect_RecordComponent::set_accessor(element(), m); 3528 } else { 3529 java_lang_reflect_RecordComponent::set_accessor(element(), NULL); 3530 } 3531 3532 int sig_index = component->generic_signature_index(); 3533 if (sig_index > 0) { 3534 Symbol* sig = holder->constants()->symbol_at(sig_index); // sig_index is a utf8 3535 oop component_sig = StringTable::intern(sig, CHECK_NULL); 3536 java_lang_reflect_RecordComponent::set_signature(element(), component_sig); 3537 } else { 3538 java_lang_reflect_RecordComponent::set_signature(element(), NULL); 3539 } 3540 3541 typeArrayOop annotation_oop = Annotations::make_java_array(component->annotations(), CHECK_NULL); 3542 java_lang_reflect_RecordComponent::set_annotations(element(), annotation_oop); 3543 3544 typeArrayOop type_annotation_oop = Annotations::make_java_array(component->type_annotations(), CHECK_NULL); 3545 java_lang_reflect_RecordComponent::set_typeAnnotations(element(), type_annotation_oop); 3546 3547 return element(); 3548 } 3549 3550 int reflect_ConstantPool::_oop_offset; 3551 3552 #define CONSTANTPOOL_FIELDS_DO(macro) \ 3553 macro(_oop_offset, k, "constantPoolOop", object_signature, false) 3554 3555 void reflect_ConstantPool::compute_offsets() { 3556 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass(); 3557 // The field is called ConstantPool* in the sun.reflect.ConstantPool class. 3558 CONSTANTPOOL_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3559 } 3560 3561 #if INCLUDE_CDS 3562 void reflect_ConstantPool::serialize_offsets(SerializeClosure* f) { 3563 CONSTANTPOOL_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3564 } 3565 #endif 3566 3567 int java_lang_reflect_Parameter::_name_offset; 3568 int java_lang_reflect_Parameter::_modifiers_offset; 3569 int java_lang_reflect_Parameter::_index_offset; 3570 int java_lang_reflect_Parameter::_executable_offset; 3571 3572 #define PARAMETER_FIELDS_DO(macro) \ 3573 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ 3574 macro(_modifiers_offset, k, vmSymbols::modifiers_name(), int_signature, false); \ 3575 macro(_index_offset, k, vmSymbols::index_name(), int_signature, false); \ 3576 macro(_executable_offset, k, vmSymbols::executable_name(), executable_signature, false) 3577 3578 void java_lang_reflect_Parameter::compute_offsets() { 3579 InstanceKlass* k = vmClasses::reflect_Parameter_klass(); 3580 PARAMETER_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3581 } 3582 3583 #if INCLUDE_CDS 3584 void java_lang_reflect_Parameter::serialize_offsets(SerializeClosure* f) { 3585 PARAMETER_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3586 } 3587 #endif 3588 3589 Handle java_lang_reflect_Parameter::create(TRAPS) { 3590 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 3591 Symbol* name = vmSymbols::java_lang_reflect_Parameter(); 3592 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); 3593 InstanceKlass* ik = InstanceKlass::cast(k); 3594 // Ensure it is initialized 3595 ik->initialize(CHECK_NH); 3596 return ik->allocate_instance_handle(THREAD); 3597 } 3598 3599 oop java_lang_reflect_Parameter::name(oop param) { 3600 return param->obj_field(_name_offset); 3601 } 3602 3603 void java_lang_reflect_Parameter::set_name(oop param, oop value) { 3604 param->obj_field_put(_name_offset, value); 3605 } 3606 3607 int java_lang_reflect_Parameter::modifiers(oop param) { 3608 return param->int_field(_modifiers_offset); 3609 } 3610 3611 void java_lang_reflect_Parameter::set_modifiers(oop param, int value) { 3612 param->int_field_put(_modifiers_offset, value); 3613 } 3614 3615 int java_lang_reflect_Parameter::index(oop param) { 3616 return param->int_field(_index_offset); 3617 } 3618 3619 void java_lang_reflect_Parameter::set_index(oop param, int value) { 3620 param->int_field_put(_index_offset, value); 3621 } 3622 3623 oop java_lang_reflect_Parameter::executable(oop param) { 3624 return param->obj_field(_executable_offset); 3625 } 3626 3627 void java_lang_reflect_Parameter::set_executable(oop param, oop value) { 3628 param->obj_field_put(_executable_offset, value); 3629 } 3630 3631 // java_lang_Module 3632 3633 int java_lang_Module::_loader_offset; 3634 int java_lang_Module::_name_offset; 3635 int java_lang_Module::_module_entry_offset; 3636 3637 Handle java_lang_Module::create(Handle loader, Handle module_name, TRAPS) { 3638 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 3639 return JavaCalls::construct_new_instance(vmClasses::Module_klass(), 3640 vmSymbols::java_lang_module_init_signature(), 3641 loader, module_name, CHECK_NH); 3642 } 3643 3644 #define MODULE_FIELDS_DO(macro) \ 3645 macro(_loader_offset, k, vmSymbols::loader_name(), classloader_signature, false); \ 3646 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false) 3647 3648 void java_lang_Module::compute_offsets() { 3649 InstanceKlass* k = vmClasses::Module_klass(); 3650 MODULE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3651 MODULE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 3652 } 3653 3654 #if INCLUDE_CDS 3655 void java_lang_Module::serialize_offsets(SerializeClosure* f) { 3656 MODULE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3657 MODULE_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); 3658 } 3659 #endif 3660 3661 oop java_lang_Module::loader(oop module) { 3662 return module->obj_field(_loader_offset); 3663 } 3664 3665 void java_lang_Module::set_loader(oop module, oop value) { 3666 module->obj_field_put(_loader_offset, value); 3667 } 3668 3669 oop java_lang_Module::name(oop module) { 3670 return module->obj_field(_name_offset); 3671 } 3672 3673 void java_lang_Module::set_name(oop module, oop value) { 3674 module->obj_field_put(_name_offset, value); 3675 } 3676 3677 ModuleEntry* java_lang_Module::module_entry_raw(oop module) { 3678 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset"); 3679 assert(module != NULL, "module can't be null"); 3680 assert(oopDesc::is_oop(module), "module must be oop"); 3681 3682 ModuleEntry* module_entry = (ModuleEntry*)module->address_field(_module_entry_offset); 3683 return module_entry; 3684 } 3685 3686 ModuleEntry* java_lang_Module::module_entry(oop module) { 3687 ModuleEntry* module_entry = module_entry_raw(module); 3688 if (module_entry == NULL) { 3689 // If the inject field containing the ModuleEntry* is null then return the 3690 // class loader's unnamed module. 3691 oop loader = java_lang_Module::loader(module); 3692 Handle h_loader = Handle(Thread::current(), loader); 3693 ClassLoaderData* loader_cld = SystemDictionary::register_loader(h_loader); 3694 return loader_cld->unnamed_module(); 3695 } 3696 return module_entry; 3697 } 3698 3699 void java_lang_Module::set_module_entry(oop module, ModuleEntry* module_entry) { 3700 assert(_module_entry_offset != 0, "Uninitialized module_entry_offset"); 3701 assert(module != NULL, "module can't be null"); 3702 assert(oopDesc::is_oop(module), "module must be oop"); 3703 module->address_field_put(_module_entry_offset, (address)module_entry); 3704 } 3705 3706 Handle reflect_ConstantPool::create(TRAPS) { 3707 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 3708 InstanceKlass* k = vmClasses::reflect_ConstantPool_klass(); 3709 // Ensure it is initialized 3710 k->initialize(CHECK_NH); 3711 return k->allocate_instance_handle(THREAD); 3712 } 3713 3714 3715 void reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) { 3716 oop mirror = value->pool_holder()->java_mirror(); 3717 // Save the mirror to get back the constant pool. 3718 reflect->obj_field_put(_oop_offset, mirror); 3719 } 3720 3721 ConstantPool* reflect_ConstantPool::get_cp(oop reflect) { 3722 3723 oop mirror = reflect->obj_field(_oop_offset); 3724 Klass* k = java_lang_Class::as_Klass(mirror); 3725 assert(k->is_instance_klass(), "Must be"); 3726 3727 // Get the constant pool back from the klass. Since class redefinition 3728 // merges the new constant pool into the old, this is essentially the 3729 // same constant pool as the original. If constant pool merging is 3730 // no longer done in the future, this will have to change to save 3731 // the original. 3732 return InstanceKlass::cast(k)->constants(); 3733 } 3734 3735 int reflect_UnsafeStaticFieldAccessorImpl::_base_offset; 3736 3737 #define UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(macro) \ 3738 macro(_base_offset, k, "base", object_signature, false) 3739 3740 void reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() { 3741 InstanceKlass* k = vmClasses::reflect_UnsafeStaticFieldAccessorImpl_klass(); 3742 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3743 } 3744 3745 #if INCLUDE_CDS 3746 void reflect_UnsafeStaticFieldAccessorImpl::serialize_offsets(SerializeClosure* f) { 3747 UNSAFESTATICFIELDACCESSORIMPL_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3748 } 3749 #endif 3750 3751 // Support for java_lang_ref_Reference 3752 3753 bool java_lang_ref_Reference::_offsets_initialized; 3754 3755 int java_lang_ref_Reference::_referent_offset; 3756 int java_lang_ref_Reference::_queue_offset; 3757 int java_lang_ref_Reference::_next_offset; 3758 int java_lang_ref_Reference::_discovered_offset; 3759 3760 #define REFERENCE_FIELDS_DO(macro) \ 3761 macro(_referent_offset, k, "referent", object_signature, false); \ 3762 macro(_queue_offset, k, "queue", referencequeue_signature, false); \ 3763 macro(_next_offset, k, "next", reference_signature, false); \ 3764 macro(_discovered_offset, k, "discovered", reference_signature, false); 3765 3766 void java_lang_ref_Reference::compute_offsets() { 3767 if (_offsets_initialized) { 3768 return; 3769 } 3770 _offsets_initialized = true; 3771 InstanceKlass* k = vmClasses::Reference_klass(); 3772 REFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3773 } 3774 3775 #if INCLUDE_CDS 3776 void java_lang_ref_Reference::serialize_offsets(SerializeClosure* f) { 3777 f->do_bool(&_offsets_initialized); 3778 REFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3779 } 3780 #endif 3781 3782 bool java_lang_ref_Reference::is_referent_field(oop obj, ptrdiff_t offset) { 3783 assert(obj != NULL, "sanity"); 3784 if (offset != _referent_offset) { 3785 return false; 3786 } 3787 3788 Klass* k = obj->klass(); 3789 if (!k->is_instance_klass()) { 3790 return false; 3791 } 3792 3793 InstanceKlass* ik = InstanceKlass::cast(obj->klass()); 3794 bool is_reference = ik->reference_type() != REF_NONE; 3795 assert(!is_reference || ik->is_subclass_of(vmClasses::Reference_klass()), "sanity"); 3796 return is_reference; 3797 } 3798 3799 int java_lang_boxing_object::_value_offset; 3800 int java_lang_boxing_object::_long_value_offset; 3801 3802 #define BOXING_FIELDS_DO(macro) \ 3803 macro(_value_offset, integerKlass, "value", int_signature, false); \ 3804 macro(_long_value_offset, longKlass, "value", long_signature, false); 3805 3806 void java_lang_boxing_object::compute_offsets() { 3807 InstanceKlass* integerKlass = vmClasses::Integer_klass(); 3808 InstanceKlass* longKlass = vmClasses::Long_klass(); 3809 BOXING_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3810 } 3811 3812 #if INCLUDE_CDS 3813 void java_lang_boxing_object::serialize_offsets(SerializeClosure* f) { 3814 BOXING_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3815 } 3816 #endif 3817 3818 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) { 3819 Klass* k = vmClasses::box_klass(type); 3820 if (k == NULL) return NULL; 3821 InstanceKlass* ik = InstanceKlass::cast(k); 3822 if (!ik->is_initialized()) { 3823 ik->initialize(CHECK_NULL); 3824 } 3825 return ik->allocate_instance(THREAD); 3826 } 3827 3828 3829 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) { 3830 oop box = initialize_and_allocate(type, CHECK_NULL); 3831 if (box == NULL) return NULL; 3832 switch (type) { 3833 case T_BOOLEAN: 3834 box->bool_field_put(_value_offset, value->z); 3835 break; 3836 case T_CHAR: 3837 box->char_field_put(_value_offset, value->c); 3838 break; 3839 case T_FLOAT: 3840 box->float_field_put(_value_offset, value->f); 3841 break; 3842 case T_DOUBLE: 3843 box->double_field_put(_long_value_offset, value->d); 3844 break; 3845 case T_BYTE: 3846 box->byte_field_put(_value_offset, value->b); 3847 break; 3848 case T_SHORT: 3849 box->short_field_put(_value_offset, value->s); 3850 break; 3851 case T_INT: 3852 box->int_field_put(_value_offset, value->i); 3853 break; 3854 case T_LONG: 3855 box->long_field_put(_long_value_offset, value->j); 3856 break; 3857 default: 3858 return NULL; 3859 } 3860 return box; 3861 } 3862 3863 3864 BasicType java_lang_boxing_object::basic_type(oop box) { 3865 if (box == NULL) return T_ILLEGAL; 3866 BasicType type = vmClasses::box_klass_type(box->klass()); 3867 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt 3868 return T_ILLEGAL; 3869 return type; 3870 } 3871 3872 3873 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) { 3874 BasicType type = vmClasses::box_klass_type(box->klass()); 3875 switch (type) { 3876 case T_BOOLEAN: 3877 value->z = box->bool_field(_value_offset); 3878 break; 3879 case T_CHAR: 3880 value->c = box->char_field(_value_offset); 3881 break; 3882 case T_FLOAT: 3883 value->f = box->float_field(_value_offset); 3884 break; 3885 case T_DOUBLE: 3886 value->d = box->double_field(_long_value_offset); 3887 break; 3888 case T_BYTE: 3889 value->b = box->byte_field(_value_offset); 3890 break; 3891 case T_SHORT: 3892 value->s = box->short_field(_value_offset); 3893 break; 3894 case T_INT: 3895 value->i = box->int_field(_value_offset); 3896 break; 3897 case T_LONG: 3898 value->j = box->long_field(_long_value_offset); 3899 break; 3900 default: 3901 return T_ILLEGAL; 3902 } // end switch 3903 return type; 3904 } 3905 3906 3907 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) { 3908 BasicType type = vmClasses::box_klass_type(box->klass()); 3909 switch (type) { 3910 case T_BOOLEAN: 3911 box->bool_field_put(_value_offset, value->z); 3912 break; 3913 case T_CHAR: 3914 box->char_field_put(_value_offset, value->c); 3915 break; 3916 case T_FLOAT: 3917 box->float_field_put(_value_offset, value->f); 3918 break; 3919 case T_DOUBLE: 3920 box->double_field_put(_long_value_offset, value->d); 3921 break; 3922 case T_BYTE: 3923 box->byte_field_put(_value_offset, value->b); 3924 break; 3925 case T_SHORT: 3926 box->short_field_put(_value_offset, value->s); 3927 break; 3928 case T_INT: 3929 box->int_field_put(_value_offset, value->i); 3930 break; 3931 case T_LONG: 3932 box->long_field_put(_long_value_offset, value->j); 3933 break; 3934 default: 3935 return T_ILLEGAL; 3936 } // end switch 3937 return type; 3938 } 3939 3940 3941 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) { 3942 switch (type) { 3943 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break; 3944 case T_CHAR: st->print("%d", value->c); break; 3945 case T_BYTE: st->print("%d", value->b); break; 3946 case T_SHORT: st->print("%d", value->s); break; 3947 case T_INT: st->print("%d", value->i); break; 3948 case T_LONG: st->print(JLONG_FORMAT, value->j); break; 3949 case T_FLOAT: st->print("%f", value->f); break; 3950 case T_DOUBLE: st->print("%lf", value->d); break; 3951 default: st->print("type %d?", type); break; 3952 } 3953 } 3954 3955 3956 // Support for java_lang_ref_SoftReference 3957 // 3958 3959 int java_lang_ref_SoftReference::_timestamp_offset; 3960 int java_lang_ref_SoftReference::_static_clock_offset; 3961 3962 #define SOFTREFERENCE_FIELDS_DO(macro) \ 3963 macro(_timestamp_offset, k, "timestamp", long_signature, false); \ 3964 macro(_static_clock_offset, k, "clock", long_signature, true) 3965 3966 void java_lang_ref_SoftReference::compute_offsets() { 3967 InstanceKlass* k = vmClasses::SoftReference_klass(); 3968 SOFTREFERENCE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 3969 } 3970 3971 #if INCLUDE_CDS 3972 void java_lang_ref_SoftReference::serialize_offsets(SerializeClosure* f) { 3973 SOFTREFERENCE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 3974 } 3975 #endif 3976 3977 jlong java_lang_ref_SoftReference::timestamp(oop ref) { 3978 return ref->long_field(_timestamp_offset); 3979 } 3980 3981 jlong java_lang_ref_SoftReference::clock() { 3982 InstanceKlass* ik = vmClasses::SoftReference_klass(); 3983 oop base = ik->static_field_base_raw(); 3984 return base->long_field(_static_clock_offset); 3985 } 3986 3987 void java_lang_ref_SoftReference::set_clock(jlong value) { 3988 InstanceKlass* ik = vmClasses::SoftReference_klass(); 3989 oop base = ik->static_field_base_raw(); 3990 base->long_field_put(_static_clock_offset, value); 3991 } 3992 3993 // Support for java_lang_invoke_DirectMethodHandle 3994 3995 int java_lang_invoke_DirectMethodHandle::_member_offset; 3996 3997 oop java_lang_invoke_DirectMethodHandle::member(oop dmh) { 3998 oop member_name = NULL; 3999 assert(oopDesc::is_oop(dmh) && java_lang_invoke_DirectMethodHandle::is_instance(dmh), 4000 "a DirectMethodHandle oop is expected"); 4001 return dmh->obj_field(_member_offset); 4002 } 4003 4004 #define DIRECTMETHODHANDLE_FIELDS_DO(macro) \ 4005 macro(_member_offset, k, "member", java_lang_invoke_MemberName_signature, false) 4006 4007 void java_lang_invoke_DirectMethodHandle::compute_offsets() { 4008 InstanceKlass* k = vmClasses::DirectMethodHandle_klass(); 4009 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4010 } 4011 4012 #if INCLUDE_CDS 4013 void java_lang_invoke_DirectMethodHandle::serialize_offsets(SerializeClosure* f) { 4014 DIRECTMETHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4015 } 4016 #endif 4017 4018 // Support for java_lang_invoke_MethodHandle 4019 4020 int java_lang_invoke_MethodHandle::_type_offset; 4021 int java_lang_invoke_MethodHandle::_form_offset; 4022 4023 int java_lang_invoke_MemberName::_clazz_offset; 4024 int java_lang_invoke_MemberName::_name_offset; 4025 int java_lang_invoke_MemberName::_type_offset; 4026 int java_lang_invoke_MemberName::_flags_offset; 4027 int java_lang_invoke_MemberName::_method_offset; 4028 int java_lang_invoke_MemberName::_vmindex_offset; 4029 4030 int java_lang_invoke_ResolvedMethodName::_vmtarget_offset; 4031 int java_lang_invoke_ResolvedMethodName::_vmholder_offset; 4032 4033 int java_lang_invoke_LambdaForm::_vmentry_offset; 4034 4035 #define METHODHANDLE_FIELDS_DO(macro) \ 4036 macro(_type_offset, k, vmSymbols::type_name(), java_lang_invoke_MethodType_signature, false); \ 4037 macro(_form_offset, k, "form", java_lang_invoke_LambdaForm_signature, false) 4038 4039 void java_lang_invoke_MethodHandle::compute_offsets() { 4040 InstanceKlass* k = vmClasses::MethodHandle_klass(); 4041 METHODHANDLE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4042 } 4043 4044 #if INCLUDE_CDS 4045 void java_lang_invoke_MethodHandle::serialize_offsets(SerializeClosure* f) { 4046 METHODHANDLE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4047 } 4048 #endif 4049 4050 #define MEMBERNAME_FIELDS_DO(macro) \ 4051 macro(_clazz_offset, k, vmSymbols::clazz_name(), class_signature, false); \ 4052 macro(_name_offset, k, vmSymbols::name_name(), string_signature, false); \ 4053 macro(_type_offset, k, vmSymbols::type_name(), object_signature, false); \ 4054 macro(_flags_offset, k, vmSymbols::flags_name(), int_signature, false); \ 4055 macro(_method_offset, k, vmSymbols::method_name(), java_lang_invoke_ResolvedMethodName_signature, false) 4056 4057 void java_lang_invoke_MemberName::compute_offsets() { 4058 InstanceKlass* k = vmClasses::MemberName_klass(); 4059 MEMBERNAME_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4060 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 4061 } 4062 4063 #if INCLUDE_CDS 4064 void java_lang_invoke_MemberName::serialize_offsets(SerializeClosure* f) { 4065 MEMBERNAME_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4066 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); 4067 } 4068 #endif 4069 4070 void java_lang_invoke_ResolvedMethodName::compute_offsets() { 4071 InstanceKlass* k = vmClasses::ResolvedMethodName_klass(); 4072 assert(k != NULL, "jdk mismatch"); 4073 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 4074 } 4075 4076 #if INCLUDE_CDS 4077 void java_lang_invoke_ResolvedMethodName::serialize_offsets(SerializeClosure* f) { 4078 RESOLVEDMETHOD_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); 4079 } 4080 #endif 4081 4082 #define LAMBDAFORM_FIELDS_DO(macro) \ 4083 macro(_vmentry_offset, k, "vmentry", java_lang_invoke_MemberName_signature, false) 4084 4085 void java_lang_invoke_LambdaForm::compute_offsets() { 4086 InstanceKlass* k = vmClasses::LambdaForm_klass(); 4087 assert (k != NULL, "jdk mismatch"); 4088 LAMBDAFORM_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4089 } 4090 4091 #if INCLUDE_CDS 4092 void java_lang_invoke_LambdaForm::serialize_offsets(SerializeClosure* f) { 4093 LAMBDAFORM_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4094 } 4095 #endif 4096 4097 bool java_lang_invoke_LambdaForm::is_instance(oop obj) { 4098 return obj != NULL && is_subclass(obj->klass()); 4099 } 4100 4101 int jdk_internal_foreign_abi_NativeEntryPoint::_method_type_offset; 4102 int jdk_internal_foreign_abi_NativeEntryPoint::_downcall_stub_address_offset; 4103 4104 #define NEP_FIELDS_DO(macro) \ 4105 macro(_method_type_offset, k, "methodType", java_lang_invoke_MethodType_signature, false); \ 4106 macro(_downcall_stub_address_offset, k, "downcallStubAddress", long_signature, false); 4107 4108 bool jdk_internal_foreign_abi_NativeEntryPoint::is_instance(oop obj) { 4109 return obj != NULL && is_subclass(obj->klass()); 4110 } 4111 4112 void jdk_internal_foreign_abi_NativeEntryPoint::compute_offsets() { 4113 InstanceKlass* k = vmClasses::NativeEntryPoint_klass(); 4114 NEP_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4115 } 4116 4117 #if INCLUDE_CDS 4118 void jdk_internal_foreign_abi_NativeEntryPoint::serialize_offsets(SerializeClosure* f) { 4119 NEP_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4120 } 4121 #endif 4122 4123 oop jdk_internal_foreign_abi_NativeEntryPoint::method_type(oop entry) { 4124 return entry->obj_field(_method_type_offset); 4125 } 4126 4127 jlong jdk_internal_foreign_abi_NativeEntryPoint::downcall_stub_address(oop entry) { 4128 return entry->long_field(_downcall_stub_address_offset); 4129 } 4130 4131 int jdk_internal_foreign_abi_ABIDescriptor::_inputStorage_offset; 4132 int jdk_internal_foreign_abi_ABIDescriptor::_outputStorage_offset; 4133 int jdk_internal_foreign_abi_ABIDescriptor::_volatileStorage_offset; 4134 int jdk_internal_foreign_abi_ABIDescriptor::_stackAlignment_offset; 4135 int jdk_internal_foreign_abi_ABIDescriptor::_shadowSpace_offset; 4136 int jdk_internal_foreign_abi_ABIDescriptor::_scratch1_offset; 4137 int jdk_internal_foreign_abi_ABIDescriptor::_scratch2_offset; 4138 4139 #define ABIDescriptor_FIELDS_DO(macro) \ 4140 macro(_inputStorage_offset, k, "inputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \ 4141 macro(_outputStorage_offset, k, "outputStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \ 4142 macro(_volatileStorage_offset, k, "volatileStorage", jdk_internal_foreign_abi_VMStorage_array_array_signature, false); \ 4143 macro(_stackAlignment_offset, k, "stackAlignment", int_signature, false); \ 4144 macro(_shadowSpace_offset, k, "shadowSpace", int_signature, false); \ 4145 macro(_scratch1_offset, k, "scratch1", jdk_internal_foreign_abi_VMStorage_signature, false); \ 4146 macro(_scratch2_offset, k, "scratch2", jdk_internal_foreign_abi_VMStorage_signature, false); 4147 4148 bool jdk_internal_foreign_abi_ABIDescriptor::is_instance(oop obj) { 4149 return obj != NULL && is_subclass(obj->klass()); 4150 } 4151 4152 void jdk_internal_foreign_abi_ABIDescriptor::compute_offsets() { 4153 InstanceKlass* k = vmClasses::ABIDescriptor_klass(); 4154 ABIDescriptor_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4155 } 4156 4157 #if INCLUDE_CDS 4158 void jdk_internal_foreign_abi_ABIDescriptor::serialize_offsets(SerializeClosure* f) { 4159 ABIDescriptor_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4160 } 4161 #endif 4162 4163 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::inputStorage(oop entry) { 4164 return oop_cast<objArrayOop>(entry->obj_field(_inputStorage_offset)); 4165 } 4166 4167 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::outputStorage(oop entry) { 4168 return oop_cast<objArrayOop>(entry->obj_field(_outputStorage_offset)); 4169 } 4170 4171 objArrayOop jdk_internal_foreign_abi_ABIDescriptor::volatileStorage(oop entry) { 4172 return oop_cast<objArrayOop>(entry->obj_field(_volatileStorage_offset)); 4173 } 4174 4175 jint jdk_internal_foreign_abi_ABIDescriptor::stackAlignment(oop entry) { 4176 return entry->int_field(_stackAlignment_offset); 4177 } 4178 4179 jint jdk_internal_foreign_abi_ABIDescriptor::shadowSpace(oop entry) { 4180 return entry->int_field(_shadowSpace_offset); 4181 } 4182 4183 oop jdk_internal_foreign_abi_ABIDescriptor::scratch1(oop entry) { 4184 return entry->obj_field(_scratch1_offset); 4185 } 4186 4187 oop jdk_internal_foreign_abi_ABIDescriptor::scratch2(oop entry) { 4188 return entry->obj_field(_scratch2_offset); 4189 } 4190 4191 int jdk_internal_foreign_abi_VMStorage::_type_offset; 4192 int jdk_internal_foreign_abi_VMStorage::_indexOrOffset_offset; 4193 int jdk_internal_foreign_abi_VMStorage::_segmentMaskOrSize_offset; 4194 int jdk_internal_foreign_abi_VMStorage::_debugName_offset; 4195 4196 #define VMStorage_FIELDS_DO(macro) \ 4197 macro(_type_offset, k, "type", byte_signature, false); \ 4198 macro(_indexOrOffset_offset, k, "indexOrOffset", int_signature, false); \ 4199 macro(_segmentMaskOrSize_offset, k, "segmentMaskOrSize", short_signature, false); \ 4200 macro(_debugName_offset, k, "debugName", string_signature, false); \ 4201 4202 bool jdk_internal_foreign_abi_VMStorage::is_instance(oop obj) { 4203 return obj != NULL && is_subclass(obj->klass()); 4204 } 4205 4206 void jdk_internal_foreign_abi_VMStorage::compute_offsets() { 4207 InstanceKlass* k = vmClasses::VMStorage_klass(); 4208 VMStorage_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4209 } 4210 4211 #if INCLUDE_CDS 4212 void jdk_internal_foreign_abi_VMStorage::serialize_offsets(SerializeClosure* f) { 4213 VMStorage_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4214 } 4215 #endif 4216 4217 jbyte jdk_internal_foreign_abi_VMStorage::type(oop entry) { 4218 return entry->byte_field(_type_offset); 4219 } 4220 4221 jint jdk_internal_foreign_abi_VMStorage::index_or_offset(oop entry) { 4222 return entry->int_field(_indexOrOffset_offset); 4223 } 4224 4225 jshort jdk_internal_foreign_abi_VMStorage::segment_mask_or_size(oop entry) { 4226 return entry->short_field(_segmentMaskOrSize_offset); 4227 } 4228 4229 oop jdk_internal_foreign_abi_VMStorage::debugName(oop entry) { 4230 return entry->obj_field(_debugName_offset); 4231 } 4232 4233 int jdk_internal_foreign_abi_CallConv::_argRegs_offset; 4234 int jdk_internal_foreign_abi_CallConv::_retRegs_offset; 4235 4236 #define CallConv_FIELDS_DO(macro) \ 4237 macro(_argRegs_offset, k, "argRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \ 4238 macro(_retRegs_offset, k, "retRegs", jdk_internal_foreign_abi_VMStorage_array_signature, false); \ 4239 4240 bool jdk_internal_foreign_abi_CallConv::is_instance(oop obj) { 4241 return obj != NULL && is_subclass(obj->klass()); 4242 } 4243 4244 void jdk_internal_foreign_abi_CallConv::compute_offsets() { 4245 InstanceKlass* k = vmClasses::CallConv_klass(); 4246 CallConv_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4247 } 4248 4249 #if INCLUDE_CDS 4250 void jdk_internal_foreign_abi_CallConv::serialize_offsets(SerializeClosure* f) { 4251 CallConv_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4252 } 4253 #endif 4254 4255 objArrayOop jdk_internal_foreign_abi_CallConv::argRegs(oop entry) { 4256 return oop_cast<objArrayOop>(entry->obj_field(_argRegs_offset)); 4257 } 4258 4259 objArrayOop jdk_internal_foreign_abi_CallConv::retRegs(oop entry) { 4260 return oop_cast<objArrayOop>(entry->obj_field(_retRegs_offset)); 4261 } 4262 4263 oop java_lang_invoke_MethodHandle::type(oop mh) { 4264 return mh->obj_field(_type_offset); 4265 } 4266 4267 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) { 4268 mh->obj_field_put(_type_offset, mtype); 4269 } 4270 4271 oop java_lang_invoke_MethodHandle::form(oop mh) { 4272 assert(_form_offset != 0, ""); 4273 return mh->obj_field(_form_offset); 4274 } 4275 4276 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) { 4277 assert(_form_offset != 0, ""); 4278 mh->obj_field_put(_form_offset, lform); 4279 } 4280 4281 /// MemberName accessors 4282 4283 oop java_lang_invoke_MemberName::clazz(oop mname) { 4284 assert(is_instance(mname), "wrong type"); 4285 return mname->obj_field(_clazz_offset); 4286 } 4287 4288 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) { 4289 assert(is_instance(mname), "wrong type"); 4290 mname->obj_field_put(_clazz_offset, clazz); 4291 } 4292 4293 oop java_lang_invoke_MemberName::name(oop mname) { 4294 assert(is_instance(mname), "wrong type"); 4295 return mname->obj_field(_name_offset); 4296 } 4297 4298 void java_lang_invoke_MemberName::set_name(oop mname, oop name) { 4299 assert(is_instance(mname), "wrong type"); 4300 mname->obj_field_put(_name_offset, name); 4301 } 4302 4303 oop java_lang_invoke_MemberName::type(oop mname) { 4304 assert(is_instance(mname), "wrong type"); 4305 return mname->obj_field(_type_offset); 4306 } 4307 4308 void java_lang_invoke_MemberName::set_type(oop mname, oop type) { 4309 assert(is_instance(mname), "wrong type"); 4310 mname->obj_field_put(_type_offset, type); 4311 } 4312 4313 int java_lang_invoke_MemberName::flags(oop mname) { 4314 assert(is_instance(mname), "wrong type"); 4315 return mname->int_field(_flags_offset); 4316 } 4317 4318 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) { 4319 assert(is_instance(mname), "wrong type"); 4320 mname->int_field_put(_flags_offset, flags); 4321 } 4322 4323 4324 // Return vmtarget from ResolvedMethodName method field through indirection 4325 Method* java_lang_invoke_MemberName::vmtarget(oop mname) { 4326 assert(is_instance(mname), "wrong type"); 4327 oop method = mname->obj_field(_method_offset); 4328 return method == NULL ? NULL : java_lang_invoke_ResolvedMethodName::vmtarget(method); 4329 } 4330 4331 bool java_lang_invoke_MemberName::is_method(oop mname) { 4332 assert(is_instance(mname), "must be MemberName"); 4333 return (flags(mname) & (MN_IS_METHOD | MN_IS_CONSTRUCTOR)) > 0; 4334 } 4335 4336 void java_lang_invoke_MemberName::set_method(oop mname, oop resolved_method) { 4337 assert(is_instance(mname), "wrong type"); 4338 mname->obj_field_put(_method_offset, resolved_method); 4339 } 4340 4341 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) { 4342 assert(is_instance(mname), "wrong type"); 4343 return (intptr_t) mname->address_field(_vmindex_offset); 4344 } 4345 4346 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) { 4347 assert(is_instance(mname), "wrong type"); 4348 mname->address_field_put(_vmindex_offset, (address) index); 4349 } 4350 4351 4352 Method* java_lang_invoke_ResolvedMethodName::vmtarget(oop resolved_method) { 4353 assert(is_instance(resolved_method), "wrong type"); 4354 Method* m = (Method*)resolved_method->address_field(_vmtarget_offset); 4355 assert(m->is_method(), "must be"); 4356 return m; 4357 } 4358 4359 // Used by redefinition to change Method* to new Method* with same hash (name, signature) 4360 void java_lang_invoke_ResolvedMethodName::set_vmtarget(oop resolved_method, Method* m) { 4361 assert(is_instance(resolved_method), "wrong type"); 4362 resolved_method->address_field_put(_vmtarget_offset, (address)m); 4363 } 4364 4365 void java_lang_invoke_ResolvedMethodName::set_vmholder(oop resolved_method, oop holder) { 4366 assert(is_instance(resolved_method), "wrong type"); 4367 resolved_method->obj_field_put(_vmholder_offset, holder); 4368 } 4369 4370 oop java_lang_invoke_ResolvedMethodName::find_resolved_method(const methodHandle& m, TRAPS) { 4371 const Method* method = m(); 4372 4373 // lookup ResolvedMethod oop in the table, or create a new one and intern it 4374 oop resolved_method = ResolvedMethodTable::find_method(method); 4375 if (resolved_method != NULL) { 4376 return resolved_method; 4377 } 4378 4379 InstanceKlass* k = vmClasses::ResolvedMethodName_klass(); 4380 if (!k->is_initialized()) { 4381 k->initialize(CHECK_NULL); 4382 } 4383 4384 oop new_resolved_method = k->allocate_instance(CHECK_NULL); 4385 4386 NoSafepointVerifier nsv; 4387 4388 if (method->is_old()) { 4389 method = (method->is_deleted()) ? Universe::throw_no_such_method_error() : 4390 method->get_new_method(); 4391 } 4392 4393 InstanceKlass* holder = method->method_holder(); 4394 4395 set_vmtarget(new_resolved_method, const_cast<Method*>(method)); 4396 // Add a reference to the loader (actually mirror because hidden classes may not have 4397 // distinct loaders) to ensure the metadata is kept alive. 4398 // This mirror may be different than the one in clazz field. 4399 set_vmholder(new_resolved_method, holder->java_mirror()); 4400 4401 // Set flag in class to indicate this InstanceKlass has entries in the table 4402 // to avoid walking table during redefinition if none of the redefined classes 4403 // have any membernames in the table. 4404 holder->set_has_resolved_methods(); 4405 4406 return ResolvedMethodTable::add_method(method, Handle(THREAD, new_resolved_method)); 4407 } 4408 4409 oop java_lang_invoke_LambdaForm::vmentry(oop lform) { 4410 assert(is_instance(lform), "wrong type"); 4411 return lform->obj_field(_vmentry_offset); 4412 } 4413 4414 4415 // Support for java_lang_invoke_MethodType 4416 4417 int java_lang_invoke_MethodType::_rtype_offset; 4418 int java_lang_invoke_MethodType::_ptypes_offset; 4419 4420 #define METHODTYPE_FIELDS_DO(macro) \ 4421 macro(_rtype_offset, k, "rtype", class_signature, false); \ 4422 macro(_ptypes_offset, k, "ptypes", class_array_signature, false) 4423 4424 void java_lang_invoke_MethodType::compute_offsets() { 4425 InstanceKlass* k = vmClasses::MethodType_klass(); 4426 METHODTYPE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4427 } 4428 4429 #if INCLUDE_CDS 4430 void java_lang_invoke_MethodType::serialize_offsets(SerializeClosure* f) { 4431 METHODTYPE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4432 } 4433 #endif 4434 4435 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) { 4436 st->print("("); 4437 objArrayOop pts = ptypes(mt); 4438 if (pts != NULL) { 4439 for (int i = 0, limit = pts->length(); i < limit; i++) { 4440 java_lang_Class::print_signature(pts->obj_at(i), st); 4441 } 4442 } else { 4443 st->print("NULL"); 4444 } 4445 st->print(")"); 4446 oop rt = rtype(mt); 4447 if (rt != NULL) { 4448 java_lang_Class::print_signature(rt, st); 4449 } else { 4450 st->print("NULL"); 4451 } 4452 } 4453 4454 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found) { 4455 ResourceMark rm; 4456 stringStream buffer(128); 4457 print_signature(mt, &buffer); 4458 const char* sigstr = buffer.base(); 4459 int siglen = (int) buffer.size(); 4460 Symbol *name; 4461 if (!intern_if_not_found) { 4462 name = SymbolTable::probe(sigstr, siglen); 4463 } else { 4464 name = SymbolTable::new_symbol(sigstr, siglen); 4465 } 4466 return name; 4467 } 4468 4469 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) { 4470 if (mt1 == mt2) 4471 return true; 4472 if (rtype(mt1) != rtype(mt2)) 4473 return false; 4474 if (ptype_count(mt1) != ptype_count(mt2)) 4475 return false; 4476 for (int i = ptype_count(mt1) - 1; i >= 0; i--) { 4477 if (ptype(mt1, i) != ptype(mt2, i)) 4478 return false; 4479 } 4480 return true; 4481 } 4482 4483 oop java_lang_invoke_MethodType::rtype(oop mt) { 4484 assert(is_instance(mt), "must be a MethodType"); 4485 return mt->obj_field(_rtype_offset); 4486 } 4487 4488 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) { 4489 assert(is_instance(mt), "must be a MethodType"); 4490 return (objArrayOop) mt->obj_field(_ptypes_offset); 4491 } 4492 4493 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) { 4494 return ptypes(mt)->obj_at(idx); 4495 } 4496 4497 int java_lang_invoke_MethodType::ptype_count(oop mt) { 4498 return ptypes(mt)->length(); 4499 } 4500 4501 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) { 4502 objArrayOop pts = ptypes(mt); 4503 int count = pts->length(); 4504 int slots = 0; 4505 for (int i = 0; i < count; i++) { 4506 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i)); 4507 slots += type2size[bt]; 4508 } 4509 return slots; 4510 } 4511 4512 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) { 4513 BasicType bt = java_lang_Class::as_BasicType(rtype(mt)); 4514 return type2size[bt]; 4515 } 4516 4517 4518 // Support for java_lang_invoke_CallSite 4519 4520 int java_lang_invoke_CallSite::_target_offset; 4521 int java_lang_invoke_CallSite::_context_offset; 4522 4523 #define CALLSITE_FIELDS_DO(macro) \ 4524 macro(_target_offset, k, "target", java_lang_invoke_MethodHandle_signature, false); \ 4525 macro(_context_offset, k, "context", java_lang_invoke_MethodHandleNatives_CallSiteContext_signature, false) 4526 4527 void java_lang_invoke_CallSite::compute_offsets() { 4528 InstanceKlass* k = vmClasses::CallSite_klass(); 4529 CALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4530 } 4531 4532 #if INCLUDE_CDS 4533 void java_lang_invoke_CallSite::serialize_offsets(SerializeClosure* f) { 4534 CALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4535 } 4536 #endif 4537 4538 oop java_lang_invoke_CallSite::context_no_keepalive(oop call_site) { 4539 assert(java_lang_invoke_CallSite::is_instance(call_site), ""); 4540 4541 oop dep_oop = call_site->obj_field_access<AS_NO_KEEPALIVE>(_context_offset); 4542 return dep_oop; 4543 } 4544 4545 // Support for java_lang_invoke_ConstantCallSite 4546 4547 int java_lang_invoke_ConstantCallSite::_is_frozen_offset; 4548 4549 #define CONSTANTCALLSITE_FIELDS_DO(macro) \ 4550 macro(_is_frozen_offset, k, "isFrozen", bool_signature, false) 4551 4552 void java_lang_invoke_ConstantCallSite::compute_offsets() { 4553 InstanceKlass* k = vmClasses::ConstantCallSite_klass(); 4554 CONSTANTCALLSITE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4555 } 4556 4557 #if INCLUDE_CDS 4558 void java_lang_invoke_ConstantCallSite::serialize_offsets(SerializeClosure* f) { 4559 CONSTANTCALLSITE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4560 } 4561 #endif 4562 4563 // Support for java_lang_invoke_MethodHandleNatives_CallSiteContext 4564 4565 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_vmdependencies_offset; 4566 int java_lang_invoke_MethodHandleNatives_CallSiteContext::_last_cleanup_offset; 4567 4568 void java_lang_invoke_MethodHandleNatives_CallSiteContext::compute_offsets() { 4569 InstanceKlass* k = vmClasses::Context_klass(); 4570 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 4571 } 4572 4573 #if INCLUDE_CDS 4574 void java_lang_invoke_MethodHandleNatives_CallSiteContext::serialize_offsets(SerializeClosure* f) { 4575 CALLSITECONTEXT_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); 4576 } 4577 #endif 4578 4579 DependencyContext java_lang_invoke_MethodHandleNatives_CallSiteContext::vmdependencies(oop call_site) { 4580 assert(java_lang_invoke_MethodHandleNatives_CallSiteContext::is_instance(call_site), ""); 4581 nmethodBucket* volatile* vmdeps_addr = call_site->field_addr<nmethodBucket* volatile>(_vmdependencies_offset); 4582 volatile uint64_t* last_cleanup_addr = call_site->field_addr<volatile uint64_t>(_last_cleanup_offset); 4583 DependencyContext dep_ctx(vmdeps_addr, last_cleanup_addr); 4584 return dep_ctx; 4585 } 4586 4587 // Support for java_security_AccessControlContext 4588 4589 int java_security_AccessControlContext::_context_offset; 4590 int java_security_AccessControlContext::_privilegedContext_offset; 4591 int java_security_AccessControlContext::_isPrivileged_offset; 4592 int java_security_AccessControlContext::_isAuthorized_offset; 4593 4594 #define ACCESSCONTROLCONTEXT_FIELDS_DO(macro) \ 4595 macro(_context_offset, k, "context", protectiondomain_signature, false); \ 4596 macro(_privilegedContext_offset, k, "privilegedContext", accesscontrolcontext_signature, false); \ 4597 macro(_isPrivileged_offset, k, "isPrivileged", bool_signature, false); \ 4598 macro(_isAuthorized_offset, k, "isAuthorized", bool_signature, false) 4599 4600 void java_security_AccessControlContext::compute_offsets() { 4601 assert(_isPrivileged_offset == 0, "offsets should be initialized only once"); 4602 InstanceKlass* k = vmClasses::AccessControlContext_klass(); 4603 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4604 } 4605 4606 #if INCLUDE_CDS 4607 void java_security_AccessControlContext::serialize_offsets(SerializeClosure* f) { 4608 ACCESSCONTROLCONTEXT_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4609 } 4610 #endif 4611 4612 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) { 4613 assert(_isPrivileged_offset != 0, "offsets should have been initialized"); 4614 assert(_isAuthorized_offset != 0, "offsets should have been initialized"); 4615 // Ensure klass is initialized 4616 vmClasses::AccessControlContext_klass()->initialize(CHECK_NULL); 4617 // Allocate result 4618 oop result = vmClasses::AccessControlContext_klass()->allocate_instance(CHECK_NULL); 4619 // Fill in values 4620 result->obj_field_put(_context_offset, context()); 4621 result->obj_field_put(_privilegedContext_offset, privileged_context()); 4622 result->bool_field_put(_isPrivileged_offset, isPrivileged); 4623 result->bool_field_put(_isAuthorized_offset, true); 4624 return result; 4625 } 4626 4627 4628 // Support for java_lang_ClassLoader 4629 4630 int java_lang_ClassLoader::_loader_data_offset; 4631 int java_lang_ClassLoader::_parallelCapable_offset; 4632 int java_lang_ClassLoader::_name_offset; 4633 int java_lang_ClassLoader::_nameAndId_offset; 4634 int java_lang_ClassLoader::_unnamedModule_offset; 4635 int java_lang_ClassLoader::_parent_offset; 4636 4637 ClassLoaderData* java_lang_ClassLoader::loader_data_acquire(oop loader) { 4638 assert(loader != NULL, "loader must not be NULL"); 4639 assert(oopDesc::is_oop(loader), "loader must be oop"); 4640 return Atomic::load_acquire(loader->field_addr<ClassLoaderData*>(_loader_data_offset)); 4641 } 4642 4643 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) { 4644 assert(loader != NULL, "loader must not be NULL"); 4645 assert(oopDesc::is_oop(loader), "loader must be oop"); 4646 return *loader->field_addr<ClassLoaderData*>(_loader_data_offset); 4647 } 4648 4649 void java_lang_ClassLoader::release_set_loader_data(oop loader, ClassLoaderData* new_data) { 4650 assert(loader != NULL, "loader must not be NULL"); 4651 assert(oopDesc::is_oop(loader), "loader must be oop"); 4652 Atomic::release_store(loader->field_addr<ClassLoaderData*>(_loader_data_offset), new_data); 4653 } 4654 4655 #define CLASSLOADER_FIELDS_DO(macro) \ 4656 macro(_parallelCapable_offset, k1, "parallelLockMap", concurrenthashmap_signature, false); \ 4657 macro(_name_offset, k1, vmSymbols::name_name(), string_signature, false); \ 4658 macro(_nameAndId_offset, k1, "nameAndId", string_signature, false); \ 4659 macro(_unnamedModule_offset, k1, "unnamedModule", module_signature, false); \ 4660 macro(_parent_offset, k1, "parent", classloader_signature, false) 4661 4662 void java_lang_ClassLoader::compute_offsets() { 4663 InstanceKlass* k1 = vmClasses::ClassLoader_klass(); 4664 CLASSLOADER_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4665 4666 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 4667 } 4668 4669 #if INCLUDE_CDS 4670 void java_lang_ClassLoader::serialize_offsets(SerializeClosure* f) { 4671 CLASSLOADER_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4672 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); 4673 } 4674 #endif 4675 4676 oop java_lang_ClassLoader::parent(oop loader) { 4677 assert(is_instance(loader), "loader must be oop"); 4678 return loader->obj_field(_parent_offset); 4679 } 4680 4681 oop java_lang_ClassLoader::parent_no_keepalive(oop loader) { 4682 assert(is_instance(loader), "loader must be oop"); 4683 return loader->obj_field_access<AS_NO_KEEPALIVE>(_parent_offset); 4684 } 4685 4686 // Returns the name field of this class loader. If the name field has not 4687 // been set, null will be returned. 4688 oop java_lang_ClassLoader::name(oop loader) { 4689 assert(is_instance(loader), "loader must be oop"); 4690 return loader->obj_field(_name_offset); 4691 } 4692 4693 // Returns the nameAndId field of this class loader. The format is 4694 // as follows: 4695 // If the defining loader has a name explicitly set then '<loader-name>' @<id> 4696 // If the defining loader has no name then <qualified-class-name> @<id> 4697 // If built-in loader, then omit '@<id>' as there is only one instance. 4698 // Use ClassLoader::loader_name_id() to obtain this String as a char*. 4699 oop java_lang_ClassLoader::nameAndId(oop loader) { 4700 assert(is_instance(loader), "loader must be oop"); 4701 return loader->obj_field(_nameAndId_offset); 4702 } 4703 4704 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) { 4705 assert(is_instance(loader), "loader must be oop"); 4706 assert(cl == NULL || is_instance(cl), "cl argument must be oop"); 4707 oop acl = loader; 4708 debug_only(jint loop_count = 0); 4709 // This loop taken verbatim from ClassLoader.java: 4710 do { 4711 acl = parent(acl); 4712 if (cl == acl) { 4713 return true; 4714 } 4715 assert(++loop_count > 0, "loop_count overflow"); 4716 } while (acl != NULL); 4717 return false; 4718 } 4719 4720 bool java_lang_ClassLoader::is_instance(oop obj) { 4721 return obj != NULL && is_subclass(obj->klass()); 4722 } 4723 4724 4725 // For class loader classes, parallelCapable defined 4726 // based on non-null field 4727 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it 4728 bool java_lang_ClassLoader::parallelCapable(oop class_loader) { 4729 assert(_parallelCapable_offset != 0, "offsets should have been initialized"); 4730 return (class_loader->obj_field(_parallelCapable_offset) != NULL); 4731 } 4732 4733 bool java_lang_ClassLoader::is_trusted_loader(oop loader) { 4734 // Fix for 4474172; see evaluation for more details 4735 loader = non_reflection_class_loader(loader); 4736 4737 oop cl = SystemDictionary::java_system_loader(); 4738 while(cl != NULL) { 4739 if (cl == loader) return true; 4740 cl = parent(cl); 4741 } 4742 return false; 4743 } 4744 4745 // Return true if this is one of the class loaders associated with 4746 // the generated bytecodes for reflection. 4747 bool java_lang_ClassLoader::is_reflection_class_loader(oop loader) { 4748 if (loader != NULL) { 4749 Klass* delegating_cl_class = vmClasses::reflect_DelegatingClassLoader_klass(); 4750 // This might be null in non-1.4 JDKs 4751 return (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)); 4752 } 4753 return false; 4754 } 4755 4756 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) { 4757 // See whether this is one of the class loaders associated with 4758 // the generated bytecodes for reflection, and if so, "magically" 4759 // delegate to its parent to prevent class loading from occurring 4760 // in places where applications using reflection didn't expect it. 4761 if (is_reflection_class_loader(loader)) { 4762 return parent(loader); 4763 } 4764 return loader; 4765 } 4766 4767 oop java_lang_ClassLoader::unnamedModule(oop loader) { 4768 assert(is_instance(loader), "loader must be oop"); 4769 return loader->obj_field(_unnamedModule_offset); 4770 } 4771 4772 // Support for java_lang_System 4773 // 4774 4775 int java_lang_System::_static_in_offset; 4776 int java_lang_System::_static_out_offset; 4777 int java_lang_System::_static_err_offset; 4778 int java_lang_System::_static_security_offset; 4779 int java_lang_System::_static_allow_security_offset; 4780 int java_lang_System::_static_never_offset; 4781 4782 #define SYSTEM_FIELDS_DO(macro) \ 4783 macro(_static_in_offset, k, "in", input_stream_signature, true); \ 4784 macro(_static_out_offset, k, "out", print_stream_signature, true); \ 4785 macro(_static_err_offset, k, "err", print_stream_signature, true); \ 4786 macro(_static_security_offset, k, "security", security_manager_signature, true); \ 4787 macro(_static_allow_security_offset, k, "allowSecurityManager", int_signature, true); \ 4788 macro(_static_never_offset, k, "NEVER", int_signature, true) 4789 4790 void java_lang_System::compute_offsets() { 4791 InstanceKlass* k = vmClasses::System_klass(); 4792 SYSTEM_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4793 } 4794 4795 // This field tells us that a security manager can never be installed so we 4796 // can completely skip populating the ProtectionDomainCacheTable. 4797 bool java_lang_System::allow_security_manager() { 4798 static int initialized = false; 4799 static bool allowed = true; // default 4800 if (!initialized) { 4801 oop base = vmClasses::System_klass()->static_field_base_raw(); 4802 int never = base->int_field(_static_never_offset); 4803 allowed = (base->int_field(_static_allow_security_offset) != never); 4804 initialized = true; 4805 } 4806 return allowed; 4807 } 4808 4809 // This field tells us that a security manager is installed. 4810 bool java_lang_System::has_security_manager() { 4811 oop base = vmClasses::System_klass()->static_field_base_raw(); 4812 return base->obj_field(_static_security_offset) != NULL; 4813 } 4814 4815 #if INCLUDE_CDS 4816 void java_lang_System::serialize_offsets(SerializeClosure* f) { 4817 SYSTEM_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4818 } 4819 #endif 4820 4821 // Support for jdk_internal_misc_UnsafeConstants 4822 // 4823 class UnsafeConstantsFixup : public FieldClosure { 4824 private: 4825 int _address_size; 4826 int _page_size; 4827 bool _big_endian; 4828 bool _use_unaligned_access; 4829 int _data_cache_line_flush_size; 4830 public: 4831 UnsafeConstantsFixup() { 4832 // round up values for all static final fields 4833 _address_size = sizeof(void*); 4834 _page_size = os::vm_page_size(); 4835 _big_endian = LITTLE_ENDIAN_ONLY(false) BIG_ENDIAN_ONLY(true); 4836 _use_unaligned_access = UseUnalignedAccesses; 4837 _data_cache_line_flush_size = (int)VM_Version::data_cache_line_flush_size(); 4838 } 4839 4840 void do_field(fieldDescriptor* fd) { 4841 oop mirror = fd->field_holder()->java_mirror(); 4842 assert(mirror != NULL, "UnsafeConstants must have mirror already"); 4843 assert(fd->field_holder() == vmClasses::UnsafeConstants_klass(), "Should be UnsafeConstants"); 4844 assert(fd->is_final(), "fields of UnsafeConstants must be final"); 4845 assert(fd->is_static(), "fields of UnsafeConstants must be static"); 4846 if (fd->name() == vmSymbols::address_size_name()) { 4847 mirror->int_field_put(fd->offset(), _address_size); 4848 } else if (fd->name() == vmSymbols::page_size_name()) { 4849 mirror->int_field_put(fd->offset(), _page_size); 4850 } else if (fd->name() == vmSymbols::big_endian_name()) { 4851 mirror->bool_field_put(fd->offset(), _big_endian); 4852 } else if (fd->name() == vmSymbols::use_unaligned_access_name()) { 4853 mirror->bool_field_put(fd->offset(), _use_unaligned_access); 4854 } else if (fd->name() == vmSymbols::data_cache_line_flush_size_name()) { 4855 mirror->int_field_put(fd->offset(), _data_cache_line_flush_size); 4856 } else { 4857 assert(false, "unexpected UnsafeConstants field"); 4858 } 4859 } 4860 }; 4861 4862 void jdk_internal_misc_UnsafeConstants::set_unsafe_constants() { 4863 UnsafeConstantsFixup fixup; 4864 vmClasses::UnsafeConstants_klass()->do_local_static_fields(&fixup); 4865 } 4866 4867 4868 // java_lang_StackTraceElement 4869 4870 int java_lang_StackTraceElement::_methodName_offset; 4871 int java_lang_StackTraceElement::_fileName_offset; 4872 int java_lang_StackTraceElement::_lineNumber_offset; 4873 int java_lang_StackTraceElement::_moduleName_offset; 4874 int java_lang_StackTraceElement::_moduleVersion_offset; 4875 int java_lang_StackTraceElement::_classLoaderName_offset; 4876 int java_lang_StackTraceElement::_declaringClass_offset; 4877 int java_lang_StackTraceElement::_declaringClassObject_offset; 4878 4879 #define STACKTRACEELEMENT_FIELDS_DO(macro) \ 4880 macro(_declaringClassObject_offset, k, "declaringClassObject", class_signature, false); \ 4881 macro(_classLoaderName_offset, k, "classLoaderName", string_signature, false); \ 4882 macro(_moduleName_offset, k, "moduleName", string_signature, false); \ 4883 macro(_moduleVersion_offset, k, "moduleVersion", string_signature, false); \ 4884 macro(_declaringClass_offset, k, "declaringClass", string_signature, false); \ 4885 macro(_methodName_offset, k, "methodName", string_signature, false); \ 4886 macro(_fileName_offset, k, "fileName", string_signature, false); \ 4887 macro(_lineNumber_offset, k, "lineNumber", int_signature, false) 4888 4889 // Support for java_lang_StackTraceElement 4890 void java_lang_StackTraceElement::compute_offsets() { 4891 InstanceKlass* k = vmClasses::StackTraceElement_klass(); 4892 STACKTRACEELEMENT_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4893 } 4894 4895 #if INCLUDE_CDS 4896 void java_lang_StackTraceElement::serialize_offsets(SerializeClosure* f) { 4897 STACKTRACEELEMENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4898 } 4899 #endif 4900 4901 void java_lang_StackTraceElement::set_fileName(oop element, oop value) { 4902 element->obj_field_put(_fileName_offset, value); 4903 } 4904 4905 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) { 4906 element->obj_field_put(_declaringClass_offset, value); 4907 } 4908 4909 void java_lang_StackTraceElement::set_methodName(oop element, oop value) { 4910 element->obj_field_put(_methodName_offset, value); 4911 } 4912 4913 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) { 4914 element->int_field_put(_lineNumber_offset, value); 4915 } 4916 4917 void java_lang_StackTraceElement::set_moduleName(oop element, oop value) { 4918 element->obj_field_put(_moduleName_offset, value); 4919 } 4920 4921 void java_lang_StackTraceElement::set_moduleVersion(oop element, oop value) { 4922 element->obj_field_put(_moduleVersion_offset, value); 4923 } 4924 4925 void java_lang_StackTraceElement::set_classLoaderName(oop element, oop value) { 4926 element->obj_field_put(_classLoaderName_offset, value); 4927 } 4928 4929 void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop value) { 4930 element->obj_field_put(_declaringClassObject_offset, value); 4931 } 4932 4933 4934 // java_lang_AssertionStatusDirectives 4935 4936 int java_lang_AssertionStatusDirectives::_classes_offset; 4937 int java_lang_AssertionStatusDirectives::_classEnabled_offset; 4938 int java_lang_AssertionStatusDirectives::_packages_offset; 4939 int java_lang_AssertionStatusDirectives::_packageEnabled_offset; 4940 int java_lang_AssertionStatusDirectives::_deflt_offset; 4941 4942 // Support for java Assertions - java_lang_AssertionStatusDirectives. 4943 #define ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(macro) \ 4944 macro(_classes_offset, k, "classes", string_array_signature, false); \ 4945 macro(_classEnabled_offset, k, "classEnabled", bool_array_signature, false); \ 4946 macro(_packages_offset, k, "packages", string_array_signature, false); \ 4947 macro(_packageEnabled_offset, k, "packageEnabled", bool_array_signature, false); \ 4948 macro(_deflt_offset, k, "deflt", bool_signature, false) 4949 4950 void java_lang_AssertionStatusDirectives::compute_offsets() { 4951 InstanceKlass* k = vmClasses::AssertionStatusDirectives_klass(); 4952 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4953 } 4954 4955 #if INCLUDE_CDS 4956 void java_lang_AssertionStatusDirectives::serialize_offsets(SerializeClosure* f) { 4957 ASSERTIONSTATUSDIRECTIVES_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4958 } 4959 #endif 4960 4961 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) { 4962 o->obj_field_put(_classes_offset, val); 4963 } 4964 4965 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) { 4966 o->obj_field_put(_classEnabled_offset, val); 4967 } 4968 4969 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) { 4970 o->obj_field_put(_packages_offset, val); 4971 } 4972 4973 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) { 4974 o->obj_field_put(_packageEnabled_offset, val); 4975 } 4976 4977 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) { 4978 o->bool_field_put(_deflt_offset, val); 4979 } 4980 4981 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset; 4982 4983 #define AOS_FIELDS_DO(macro) \ 4984 macro(_owner_offset, k, "exclusiveOwnerThread", thread_signature, false) 4985 4986 void java_util_concurrent_locks_AbstractOwnableSynchronizer::compute_offsets() { 4987 InstanceKlass* k = vmClasses::java_util_concurrent_locks_AbstractOwnableSynchronizer_klass(); 4988 AOS_FIELDS_DO(FIELD_COMPUTE_OFFSET); 4989 } 4990 4991 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) { 4992 assert(_owner_offset != 0, "Must be initialized"); 4993 return obj->obj_field(_owner_offset); 4994 } 4995 4996 #if INCLUDE_CDS 4997 void java_util_concurrent_locks_AbstractOwnableSynchronizer::serialize_offsets(SerializeClosure* f) { 4998 AOS_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 4999 } 5000 #endif 5001 5002 int vector_VectorPayload::_payload_offset; 5003 5004 #define VECTORPAYLOAD_FIELDS_DO(macro) \ 5005 macro(_payload_offset, k, "payload", object_signature, false) 5006 5007 void vector_VectorPayload::compute_offsets() { 5008 InstanceKlass* k = vmClasses::vector_VectorPayload_klass(); 5009 VECTORPAYLOAD_FIELDS_DO(FIELD_COMPUTE_OFFSET); 5010 } 5011 5012 #if INCLUDE_CDS 5013 void vector_VectorPayload::serialize_offsets(SerializeClosure* f) { 5014 VECTORPAYLOAD_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 5015 } 5016 #endif 5017 5018 void vector_VectorPayload::set_payload(oop o, oop val) { 5019 o->obj_field_put(_payload_offset, val); 5020 } 5021 5022 bool vector_VectorPayload::is_instance(oop obj) { 5023 return obj != NULL && is_subclass(obj->klass()); 5024 } 5025 5026 int java_lang_Integer_IntegerCache::_static_cache_offset; 5027 int java_lang_Long_LongCache::_static_cache_offset; 5028 int java_lang_Character_CharacterCache::_static_cache_offset; 5029 int java_lang_Short_ShortCache::_static_cache_offset; 5030 int java_lang_Byte_ByteCache::_static_cache_offset; 5031 5032 #define INTEGER_CACHE_FIELDS_DO(macro) \ 5033 macro(_static_cache_offset, k, "cache", java_lang_Integer_array_signature, true) 5034 5035 void java_lang_Integer_IntegerCache::compute_offsets(InstanceKlass *k) { 5036 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); 5037 INTEGER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 5038 } 5039 5040 objArrayOop java_lang_Integer_IntegerCache::cache(InstanceKlass *ik) { 5041 oop base = ik->static_field_base_raw(); 5042 return objArrayOop(base->obj_field(_static_cache_offset)); 5043 } 5044 5045 Symbol* java_lang_Integer_IntegerCache::symbol() { 5046 return vmSymbols::java_lang_Integer_IntegerCache(); 5047 } 5048 5049 #if INCLUDE_CDS 5050 void java_lang_Integer_IntegerCache::serialize_offsets(SerializeClosure* f) { 5051 INTEGER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 5052 } 5053 #endif 5054 #undef INTEGER_CACHE_FIELDS_DO 5055 5056 jint java_lang_Integer::value(oop obj) { 5057 jvalue v; 5058 java_lang_boxing_object::get_value(obj, &v); 5059 return v.i; 5060 } 5061 5062 #define LONG_CACHE_FIELDS_DO(macro) \ 5063 macro(_static_cache_offset, k, "cache", java_lang_Long_array_signature, true) 5064 5065 void java_lang_Long_LongCache::compute_offsets(InstanceKlass *k) { 5066 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); 5067 LONG_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 5068 } 5069 5070 objArrayOop java_lang_Long_LongCache::cache(InstanceKlass *ik) { 5071 oop base = ik->static_field_base_raw(); 5072 return objArrayOop(base->obj_field(_static_cache_offset)); 5073 } 5074 5075 Symbol* java_lang_Long_LongCache::symbol() { 5076 return vmSymbols::java_lang_Long_LongCache(); 5077 } 5078 5079 #if INCLUDE_CDS 5080 void java_lang_Long_LongCache::serialize_offsets(SerializeClosure* f) { 5081 LONG_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 5082 } 5083 #endif 5084 #undef LONG_CACHE_FIELDS_DO 5085 5086 jlong java_lang_Long::value(oop obj) { 5087 jvalue v; 5088 java_lang_boxing_object::get_value(obj, &v); 5089 return v.j; 5090 } 5091 5092 #define CHARACTER_CACHE_FIELDS_DO(macro) \ 5093 macro(_static_cache_offset, k, "cache", java_lang_Character_array_signature, true) 5094 5095 void java_lang_Character_CharacterCache::compute_offsets(InstanceKlass *k) { 5096 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); 5097 CHARACTER_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 5098 } 5099 5100 objArrayOop java_lang_Character_CharacterCache::cache(InstanceKlass *ik) { 5101 oop base = ik->static_field_base_raw(); 5102 return objArrayOop(base->obj_field(_static_cache_offset)); 5103 } 5104 5105 Symbol* java_lang_Character_CharacterCache::symbol() { 5106 return vmSymbols::java_lang_Character_CharacterCache(); 5107 } 5108 5109 #if INCLUDE_CDS 5110 void java_lang_Character_CharacterCache::serialize_offsets(SerializeClosure* f) { 5111 CHARACTER_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 5112 } 5113 #endif 5114 #undef CHARACTER_CACHE_FIELDS_DO 5115 5116 jchar java_lang_Character::value(oop obj) { 5117 jvalue v; 5118 java_lang_boxing_object::get_value(obj, &v); 5119 return v.c; 5120 } 5121 5122 #define SHORT_CACHE_FIELDS_DO(macro) \ 5123 macro(_static_cache_offset, k, "cache", java_lang_Short_array_signature, true) 5124 5125 void java_lang_Short_ShortCache::compute_offsets(InstanceKlass *k) { 5126 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); 5127 SHORT_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 5128 } 5129 5130 objArrayOop java_lang_Short_ShortCache::cache(InstanceKlass *ik) { 5131 oop base = ik->static_field_base_raw(); 5132 return objArrayOop(base->obj_field(_static_cache_offset)); 5133 } 5134 5135 Symbol* java_lang_Short_ShortCache::symbol() { 5136 return vmSymbols::java_lang_Short_ShortCache(); 5137 } 5138 5139 #if INCLUDE_CDS 5140 void java_lang_Short_ShortCache::serialize_offsets(SerializeClosure* f) { 5141 SHORT_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 5142 } 5143 #endif 5144 #undef SHORT_CACHE_FIELDS_DO 5145 5146 jshort java_lang_Short::value(oop obj) { 5147 jvalue v; 5148 java_lang_boxing_object::get_value(obj, &v); 5149 return v.s; 5150 } 5151 5152 #define BYTE_CACHE_FIELDS_DO(macro) \ 5153 macro(_static_cache_offset, k, "cache", java_lang_Byte_array_signature, true) 5154 5155 void java_lang_Byte_ByteCache::compute_offsets(InstanceKlass *k) { 5156 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); 5157 BYTE_CACHE_FIELDS_DO(FIELD_COMPUTE_OFFSET); 5158 } 5159 5160 objArrayOop java_lang_Byte_ByteCache::cache(InstanceKlass *ik) { 5161 oop base = ik->static_field_base_raw(); 5162 return objArrayOop(base->obj_field(_static_cache_offset)); 5163 } 5164 5165 Symbol* java_lang_Byte_ByteCache::symbol() { 5166 return vmSymbols::java_lang_Byte_ByteCache(); 5167 } 5168 5169 #if INCLUDE_CDS 5170 void java_lang_Byte_ByteCache::serialize_offsets(SerializeClosure* f) { 5171 BYTE_CACHE_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 5172 } 5173 #endif 5174 #undef BYTE_CACHE_FIELDS_DO 5175 5176 jbyte java_lang_Byte::value(oop obj) { 5177 jvalue v; 5178 java_lang_boxing_object::get_value(obj, &v); 5179 return v.b; 5180 } 5181 5182 int java_lang_Boolean::_static_TRUE_offset; 5183 int java_lang_Boolean::_static_FALSE_offset; 5184 5185 #define BOOLEAN_FIELDS_DO(macro) \ 5186 macro(_static_TRUE_offset, k, "TRUE", java_lang_Boolean_signature, true); \ 5187 macro(_static_FALSE_offset, k, "FALSE", java_lang_Boolean_signature, true) 5188 5189 5190 void java_lang_Boolean::compute_offsets(InstanceKlass *k) { 5191 guarantee(k != NULL && k->is_initialized(), "must be loaded and initialized"); 5192 BOOLEAN_FIELDS_DO(FIELD_COMPUTE_OFFSET); 5193 } 5194 5195 oop java_lang_Boolean::get_TRUE(InstanceKlass *ik) { 5196 oop base = ik->static_field_base_raw(); 5197 return base->obj_field(_static_TRUE_offset); 5198 } 5199 5200 oop java_lang_Boolean::get_FALSE(InstanceKlass *ik) { 5201 oop base = ik->static_field_base_raw(); 5202 return base->obj_field(_static_FALSE_offset); 5203 } 5204 5205 Symbol* java_lang_Boolean::symbol() { 5206 return vmSymbols::java_lang_Boolean(); 5207 } 5208 5209 #if INCLUDE_CDS 5210 void java_lang_Boolean::serialize_offsets(SerializeClosure* f) { 5211 BOOLEAN_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 5212 } 5213 #endif 5214 #undef BOOLEAN_CACHE_FIELDS_DO 5215 5216 jboolean java_lang_Boolean::value(oop obj) { 5217 jvalue v; 5218 java_lang_boxing_object::get_value(obj, &v); 5219 return v.z; 5220 } 5221 5222 // java_lang_reflect_RecordComponent 5223 5224 int java_lang_reflect_RecordComponent::_clazz_offset; 5225 int java_lang_reflect_RecordComponent::_name_offset; 5226 int java_lang_reflect_RecordComponent::_type_offset; 5227 int java_lang_reflect_RecordComponent::_accessor_offset; 5228 int java_lang_reflect_RecordComponent::_signature_offset; 5229 int java_lang_reflect_RecordComponent::_annotations_offset; 5230 int java_lang_reflect_RecordComponent::_typeAnnotations_offset; 5231 5232 #define RECORDCOMPONENT_FIELDS_DO(macro) \ 5233 macro(_clazz_offset, k, "clazz", class_signature, false); \ 5234 macro(_name_offset, k, "name", string_signature, false); \ 5235 macro(_type_offset, k, "type", class_signature, false); \ 5236 macro(_accessor_offset, k, "accessor", reflect_method_signature, false); \ 5237 macro(_signature_offset, k, "signature", string_signature, false); \ 5238 macro(_annotations_offset, k, "annotations", byte_array_signature, false); \ 5239 macro(_typeAnnotations_offset, k, "typeAnnotations", byte_array_signature, false); 5240 5241 // Support for java_lang_reflect_RecordComponent 5242 void java_lang_reflect_RecordComponent::compute_offsets() { 5243 InstanceKlass* k = vmClasses::RecordComponent_klass(); 5244 RECORDCOMPONENT_FIELDS_DO(FIELD_COMPUTE_OFFSET); 5245 } 5246 5247 #if INCLUDE_CDS 5248 void java_lang_reflect_RecordComponent::serialize_offsets(SerializeClosure* f) { 5249 RECORDCOMPONENT_FIELDS_DO(FIELD_SERIALIZE_OFFSET); 5250 } 5251 #endif 5252 5253 void java_lang_reflect_RecordComponent::set_clazz(oop element, oop value) { 5254 element->obj_field_put(_clazz_offset, value); 5255 } 5256 5257 void java_lang_reflect_RecordComponent::set_name(oop element, oop value) { 5258 element->obj_field_put(_name_offset, value); 5259 } 5260 5261 void java_lang_reflect_RecordComponent::set_type(oop element, oop value) { 5262 element->obj_field_put(_type_offset, value); 5263 } 5264 5265 void java_lang_reflect_RecordComponent::set_accessor(oop element, oop value) { 5266 element->obj_field_put(_accessor_offset, value); 5267 } 5268 5269 void java_lang_reflect_RecordComponent::set_signature(oop element, oop value) { 5270 element->obj_field_put(_signature_offset, value); 5271 } 5272 5273 void java_lang_reflect_RecordComponent::set_annotations(oop element, oop value) { 5274 element->obj_field_put(_annotations_offset, value); 5275 } 5276 5277 void java_lang_reflect_RecordComponent::set_typeAnnotations(oop element, oop value) { 5278 element->obj_field_put(_typeAnnotations_offset, value); 5279 } 5280 5281 // java_lang_InternalError 5282 int java_lang_InternalError::_during_unsafe_access_offset; 5283 5284 void java_lang_InternalError::set_during_unsafe_access(oop internal_error) { 5285 internal_error->bool_field_put(_during_unsafe_access_offset, true); 5286 } 5287 5288 jboolean java_lang_InternalError::during_unsafe_access(oop internal_error) { 5289 return internal_error->bool_field(_during_unsafe_access_offset); 5290 } 5291 5292 void java_lang_InternalError::compute_offsets() { 5293 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 5294 } 5295 5296 #if INCLUDE_CDS 5297 void java_lang_InternalError::serialize_offsets(SerializeClosure* f) { 5298 INTERNALERROR_INJECTED_FIELDS(INJECTED_FIELD_SERIALIZE_OFFSET); 5299 } 5300 #endif 5301 5302 #define BASIC_JAVA_CLASSES_DO_PART1(f) \ 5303 f(java_lang_Class) \ 5304 f(java_lang_String) \ 5305 f(java_lang_ref_Reference) \ 5306 //end 5307 5308 #define BASIC_JAVA_CLASSES_DO_PART2(f) \ 5309 f(java_lang_System) \ 5310 f(java_lang_ClassLoader) \ 5311 f(java_lang_Throwable) \ 5312 f(java_lang_Thread) \ 5313 f(java_lang_Thread_FieldHolder) \ 5314 f(java_lang_Thread_Constants) \ 5315 f(java_lang_ThreadGroup) \ 5316 f(java_lang_VirtualThread) \ 5317 f(java_lang_InternalError) \ 5318 f(java_lang_AssertionStatusDirectives) \ 5319 f(java_lang_ref_SoftReference) \ 5320 f(java_lang_invoke_MethodHandle) \ 5321 f(java_lang_invoke_DirectMethodHandle) \ 5322 f(java_lang_invoke_MemberName) \ 5323 f(java_lang_invoke_ResolvedMethodName) \ 5324 f(java_lang_invoke_LambdaForm) \ 5325 f(java_lang_invoke_MethodType) \ 5326 f(java_lang_invoke_CallSite) \ 5327 f(java_lang_invoke_ConstantCallSite) \ 5328 f(java_lang_invoke_MethodHandleNatives_CallSiteContext) \ 5329 f(java_security_AccessControlContext) \ 5330 f(java_lang_reflect_AccessibleObject) \ 5331 f(java_lang_reflect_Method) \ 5332 f(java_lang_reflect_Constructor) \ 5333 f(java_lang_reflect_Field) \ 5334 f(java_lang_reflect_RecordComponent) \ 5335 f(reflect_ConstantPool) \ 5336 f(reflect_UnsafeStaticFieldAccessorImpl) \ 5337 f(java_lang_reflect_Parameter) \ 5338 f(java_lang_Module) \ 5339 f(java_lang_StackTraceElement) \ 5340 f(java_lang_StackFrameInfo) \ 5341 f(java_lang_LiveStackFrameInfo) \ 5342 f(jdk_internal_vm_ContinuationScope) \ 5343 f(jdk_internal_vm_Continuation) \ 5344 f(jdk_internal_vm_StackChunk) \ 5345 f(java_util_concurrent_locks_AbstractOwnableSynchronizer) \ 5346 f(jdk_internal_foreign_abi_NativeEntryPoint) \ 5347 f(jdk_internal_foreign_abi_ABIDescriptor) \ 5348 f(jdk_internal_foreign_abi_VMStorage) \ 5349 f(jdk_internal_foreign_abi_CallConv) \ 5350 f(jdk_internal_misc_UnsafeConstants) \ 5351 f(java_lang_boxing_object) \ 5352 f(vector_VectorPayload) \ 5353 //end 5354 5355 #define BASIC_JAVA_CLASSES_DO(f) \ 5356 BASIC_JAVA_CLASSES_DO_PART1(f) \ 5357 BASIC_JAVA_CLASSES_DO_PART2(f) 5358 5359 #define DO_COMPUTE_OFFSETS(k) k::compute_offsets(); 5360 5361 // Compute field offsets of all the classes in this file 5362 void JavaClasses::compute_offsets() { 5363 if (UseSharedSpaces) { 5364 JVMTI_ONLY(assert(JvmtiExport::is_early_phase() && !(JvmtiExport::should_post_class_file_load_hook() && 5365 JvmtiExport::has_early_class_hook_env()), 5366 "JavaClasses::compute_offsets() must be called in early JVMTI phase.")); 5367 // None of the classes used by the rest of this function can be replaced by 5368 // JVMTI ClassFileLoadHook. 5369 // We are safe to use the archived offsets, which have already been restored 5370 // by JavaClasses::serialize_offsets, without computing the offsets again. 5371 return; 5372 } 5373 5374 // We have already called the compute_offsets() of the 5375 // BASIC_JAVA_CLASSES_DO_PART1 classes (java_lang_String, java_lang_Class and 5376 // java_lang_ref_Reference) earlier inside vmClasses::resolve_all() 5377 BASIC_JAVA_CLASSES_DO_PART2(DO_COMPUTE_OFFSETS); 5378 } 5379 5380 #if INCLUDE_CDS 5381 #define DO_SERIALIZE_OFFSETS(k) k::serialize_offsets(soc); 5382 5383 void JavaClasses::serialize_offsets(SerializeClosure* soc) { 5384 BASIC_JAVA_CLASSES_DO(DO_SERIALIZE_OFFSETS); 5385 } 5386 #endif 5387 5388 #if INCLUDE_CDS_JAVA_HEAP 5389 bool JavaClasses::is_supported_for_archiving(oop obj) { 5390 Klass* klass = obj->klass(); 5391 5392 if (klass == vmClasses::ClassLoader_klass() || // ClassLoader::loader_data is malloc'ed. 5393 // The next 3 classes are used to implement java.lang.invoke, and are not used directly in 5394 // regular Java code. The implementation of java.lang.invoke uses generated hidden classes 5395 // (e.g., as referenced by ResolvedMethodName::vmholder) that are not yet supported by CDS. 5396 // So for now we cannot not support these classes for archiving. 5397 // 5398 // These objects typically are not referenced by static fields, but rather by resolved 5399 // constant pool entries, so excluding them shouldn't affect the archiving of static fields. 5400 klass == vmClasses::ResolvedMethodName_klass() || 5401 klass == vmClasses::MemberName_klass() || 5402 klass == vmClasses::Context_klass() || 5403 // It's problematic to archive Reference objects. One of the reasons is that 5404 // Reference::discovered may pull in unwanted objects (see JDK-8284336) 5405 klass->is_subclass_of(vmClasses::Reference_klass())) { 5406 return false; 5407 } 5408 5409 return true; 5410 } 5411 #endif 5412 5413 #ifndef PRODUCT 5414 5415 // These functions exist to assert the validity of de-serialized offsets in boxing object as a sanity check. 5416 5417 bool JavaClasses::check_offset(const char *klass_name, int deserialized_offset, const char *field_name, 5418 const char* field_sig) { 5419 EXCEPTION_MARK; 5420 fieldDescriptor fd; 5421 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name); 5422 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); 5423 InstanceKlass* ik = InstanceKlass::cast(k); 5424 TempNewSymbol f_name = SymbolTable::new_symbol(field_name); 5425 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig); 5426 if (!ik->find_local_field(f_name, f_sig, &fd)) { 5427 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name); 5428 return false; 5429 } 5430 if (fd.is_static()) { 5431 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name); 5432 return false; 5433 } 5434 if (fd.offset() == deserialized_offset ) { 5435 return true; 5436 } else { 5437 tty->print_cr("Offset of nonstatic field %s.%s is deserialized as %d but should really be %d.", 5438 klass_name, field_name, deserialized_offset, fd.offset()); 5439 return false; 5440 } 5441 } 5442 5443 void JavaClasses::check_offsets() { 5444 bool valid = true; 5445 5446 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ 5447 valid &= check_offset(klass_name, cpp_klass_name :: _##field_name ## _offset, #field_name, field_sig) 5448 5449 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ 5450 valid &= check_offset(klass_name, cpp_klass_name :: _##long_ ## field_name ## _offset, #field_name, field_sig) 5451 5452 // Boxed primitive objects (java_lang_boxing_object) 5453 5454 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z"); 5455 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C"); 5456 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F"); 5457 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D"); 5458 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B"); 5459 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S"); 5460 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I"); 5461 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J"); 5462 5463 if (!valid) vm_exit_during_initialization("Field offset verification failed"); 5464 } 5465 5466 #endif // PRODUCT 5467 5468 int InjectedField::compute_offset() { 5469 InstanceKlass* ik = InstanceKlass::cast(klass()); 5470 for (AllFieldStream fs(ik); !fs.done(); fs.next()) { 5471 if (!may_be_java && !fs.access_flags().is_internal()) { 5472 // Only look at injected fields 5473 continue; 5474 } 5475 if (fs.name() == name() && fs.signature() == signature()) { 5476 return fs.offset(); 5477 } 5478 } 5479 ResourceMark rm; 5480 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)" : ""); 5481 #ifndef PRODUCT 5482 ik->print(); 5483 tty->print_cr("all fields:"); 5484 for (AllFieldStream fs(ik); !fs.done(); fs.next()) { 5485 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int()); 5486 } 5487 #endif //PRODUCT 5488 vm_exit_during_initialization("Invalid layout of well-known class: use -Xlog:class+load=info to see the origin of the problem class"); 5489 return -1; 5490 } 5491 5492 void javaClasses_init() { 5493 JavaClasses::compute_offsets(); 5494 JavaClasses::check_offsets(); 5495 java_lang_VirtualThread::init_static_notify_jvmti_events(); 5496 FilteredFieldsMap::initialize(); // must be done after computing offsets. 5497 }