1 /* 2 * Copyright (c) 1997, 2012, 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 "classfile/altHashing.hpp" 27 #include "classfile/javaClasses.hpp" 28 #include "classfile/symbolTable.hpp" 29 #include "classfile/vmSymbols.hpp" 30 #include "code/debugInfo.hpp" 31 #include "code/pcDesc.hpp" 32 #include "compiler/compilerOracle.hpp" 33 #include "interpreter/interpreter.hpp" 34 #include "memory/oopFactory.hpp" 35 #include "memory/resourceArea.hpp" 36 #include "memory/universe.inline.hpp" 37 #include "oops/fieldStreams.hpp" 38 #include "oops/instanceKlass.hpp" 39 #include "oops/instanceMirrorKlass.hpp" 40 #include "oops/klass.hpp" 41 #include "oops/method.hpp" 42 #include "oops/symbol.hpp" 43 #include "oops/typeArrayOop.hpp" 44 #include "runtime/fieldDescriptor.hpp" 45 #include "runtime/handles.inline.hpp" 46 #include "runtime/interfaceSupport.hpp" 47 #include "runtime/java.hpp" 48 #include "runtime/javaCalls.hpp" 49 #include "runtime/safepoint.hpp" 50 #include "runtime/thread.inline.hpp" 51 #include "runtime/vframe.hpp" 52 #include "utilities/preserveException.hpp" 53 54 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \ 55 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum); 56 57 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \ 58 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java }, 59 60 InjectedField JavaClasses::_injected_fields[] = { 61 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD) 62 }; 63 64 int JavaClasses::compute_injected_offset(InjectedFieldID id) { 65 return _injected_fields[id].compute_offset(); 66 } 67 68 69 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) { 70 *field_count = 0; 71 72 vmSymbols::SID sid = vmSymbols::find_sid(class_name); 73 if (sid == vmSymbols::NO_SID) { 74 // Only well known classes can inject fields 75 return NULL; 76 } 77 78 int count = 0; 79 int start = -1; 80 81 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \ 82 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \ 83 count++; \ 84 if (start == -1) start = klass##_##name##_enum; \ 85 } 86 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD); 87 #undef LOOKUP_INJECTED_FIELD 88 89 if (start != -1) { 90 *field_count = count; 91 return _injected_fields + start; 92 } 93 return NULL; 94 } 95 96 97 static bool find_field(InstanceKlass* ik, 98 Symbol* name_symbol, Symbol* signature_symbol, 99 fieldDescriptor* fd, 100 bool allow_super = false) { 101 if (allow_super) 102 return ik->find_field(name_symbol, signature_symbol, fd) != NULL; 103 else 104 return ik->find_local_field(name_symbol, signature_symbol, fd); 105 } 106 107 // Helpful routine for computing field offsets at run time rather than hardcoding them 108 static void 109 compute_offset(int &dest_offset, 110 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol, 111 bool allow_super = false) { 112 fieldDescriptor fd; 113 InstanceKlass* ik = InstanceKlass::cast(klass_oop); 114 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) { 115 ResourceMark rm; 116 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string()); 117 #ifndef PRODUCT 118 klass_oop->print(); 119 tty->print_cr("all fields:"); 120 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) { 121 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int()); 122 } 123 #endif //PRODUCT 124 fatal("Invalid layout of preloaded class"); 125 } 126 dest_offset = fd.offset(); 127 } 128 129 // Same as above but for "optional" offsets that might not be present in certain JDK versions 130 static void 131 compute_optional_offset(int& dest_offset, 132 Klass* klass_oop, Symbol* name_symbol, Symbol* signature_symbol, 133 bool allow_super = false) { 134 fieldDescriptor fd; 135 InstanceKlass* ik = InstanceKlass::cast(klass_oop); 136 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) { 137 dest_offset = fd.offset(); 138 } 139 } 140 141 142 int java_lang_String::value_offset = 0; 143 int java_lang_String::offset_offset = 0; 144 int java_lang_String::count_offset = 0; 145 int java_lang_String::hash_offset = 0; 146 147 bool java_lang_String::initialized = false; 148 149 void java_lang_String::compute_offsets() { 150 assert(!initialized, "offsets should be initialized only once"); 151 152 Klass* k = SystemDictionary::String_klass(); 153 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature()); 154 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature()); 155 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature()); 156 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature()); 157 158 initialized = true; 159 } 160 161 Handle java_lang_String::basic_create(int length, TRAPS) { 162 assert(initialized, "Must be initialized"); 163 // Create the String object first, so there's a chance that the String 164 // and the char array it points to end up in the same cache line. 165 oop obj; 166 obj = InstanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH); 167 168 // Create the char array. The String object must be handlized here 169 // because GC can happen as a result of the allocation attempt. 170 Handle h_obj(THREAD, obj); 171 typeArrayOop buffer; 172 buffer = oopFactory::new_charArray(length, CHECK_NH); 173 174 // Point the String at the char array 175 obj = h_obj(); 176 set_value(obj, buffer); 177 // No need to zero the offset, allocation zero'ed the entire String object 178 assert(offset(obj) == 0, "initial String offset should be zero"); 179 //set_offset(obj, 0); 180 set_count(obj, length); 181 182 return h_obj; 183 } 184 185 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) { 186 Handle h_obj = basic_create(length, CHECK_NH); 187 typeArrayOop buffer = value(h_obj()); 188 for (int index = 0; index < length; index++) { 189 buffer->char_at_put(index, unicode[index]); 190 } 191 return h_obj; 192 } 193 194 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) { 195 Handle h_obj = create_from_unicode(unicode, length, CHECK_0); 196 return h_obj(); 197 } 198 199 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) { 200 if (utf8_str == NULL) { 201 return Handle(); 202 } 203 int length = UTF8::unicode_length(utf8_str); 204 Handle h_obj = basic_create(length, CHECK_NH); 205 if (length > 0) { 206 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length); 207 } 208 return h_obj; 209 } 210 211 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) { 212 Handle h_obj = create_from_str(utf8_str, CHECK_0); 213 return h_obj(); 214 } 215 216 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) { 217 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length()); 218 Handle h_obj = basic_create(length, CHECK_NH); 219 if (length > 0) { 220 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length); 221 } 222 return h_obj; 223 } 224 225 // Converts a C string to a Java String based on current encoding 226 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) { 227 assert(str != NULL, "bad arguments"); 228 229 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *); 230 static to_java_string_fn_t _to_java_string_fn = NULL; 231 232 if (_to_java_string_fn == NULL) { 233 void *lib_handle = os::native_java_library(); 234 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform")); 235 if (_to_java_string_fn == NULL) { 236 fatal("NewStringPlatform missing"); 237 } 238 } 239 240 jstring js = NULL; 241 { JavaThread* thread = (JavaThread*)THREAD; 242 assert(thread->is_Java_thread(), "must be java thread"); 243 HandleMark hm(thread); 244 ThreadToNativeFromVM ttn(thread); 245 js = (_to_java_string_fn)(thread->jni_environment(), str); 246 } 247 return Handle(THREAD, JNIHandles::resolve(js)); 248 } 249 250 // Converts a Java String to a native C string that can be used for 251 // native OS calls. 252 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) { 253 254 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*); 255 static to_platform_string_fn_t _to_platform_string_fn = NULL; 256 257 if (_to_platform_string_fn == NULL) { 258 void *lib_handle = os::native_java_library(); 259 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars")); 260 if (_to_platform_string_fn == NULL) { 261 fatal("GetStringPlatformChars missing"); 262 } 263 } 264 265 char *native_platform_string; 266 { JavaThread* thread = (JavaThread*)THREAD; 267 assert(thread->is_Java_thread(), "must be java thread"); 268 JNIEnv *env = thread->jni_environment(); 269 jstring js = (jstring) JNIHandles::make_local(env, java_string()); 270 bool is_copy; 271 HandleMark hm(thread); 272 ThreadToNativeFromVM ttn(thread); 273 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy); 274 assert(is_copy == JNI_TRUE, "is_copy value changed"); 275 JNIHandles::destroy_local(js); 276 } 277 return native_platform_string; 278 } 279 280 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) { 281 oop obj = java_string(); 282 // Typical usage is to convert all '/' to '.' in string. 283 typeArrayOop value = java_lang_String::value(obj); 284 int offset = java_lang_String::offset(obj); 285 int length = java_lang_String::length(obj); 286 287 // First check if any from_char exist 288 int index; // Declared outside, used later 289 for (index = 0; index < length; index++) { 290 if (value->char_at(index + offset) == from_char) { 291 break; 292 } 293 } 294 if (index == length) { 295 // No from_char, so do not copy. 296 return java_string; 297 } 298 299 // Create new UNICODE buffer. Must handlize value because GC 300 // may happen during String and char array creation. 301 typeArrayHandle h_value(THREAD, value); 302 Handle string = basic_create(length, CHECK_NH); 303 304 typeArrayOop from_buffer = h_value(); 305 typeArrayOop to_buffer = java_lang_String::value(string()); 306 307 // Copy contents 308 for (index = 0; index < length; index++) { 309 jchar c = from_buffer->char_at(index + offset); 310 if (c == from_char) { 311 c = to_char; 312 } 313 to_buffer->char_at_put(index, c); 314 } 315 return string; 316 } 317 318 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) { 319 typeArrayOop value = java_lang_String::value(java_string); 320 int offset = java_lang_String::offset(java_string); 321 length = java_lang_String::length(java_string); 322 323 jchar* result = NEW_RESOURCE_ARRAY(jchar, length); 324 for (int index = 0; index < length; index++) { 325 result[index] = value->char_at(index + offset); 326 } 327 return result; 328 } 329 330 unsigned int java_lang_String::to_hash(oop java_string) { 331 int length = java_lang_String::length(java_string); 332 // Zero length string will hash to zero with String.toHash() function. 333 if (length == 0) return 0; 334 335 typeArrayOop value = java_lang_String::value(java_string); 336 int offset = java_lang_String::offset(java_string); 337 return java_lang_String::to_hash(value->char_at_addr(offset), length); 338 } 339 340 char* java_lang_String::as_quoted_ascii(oop java_string) { 341 typeArrayOop value = java_lang_String::value(java_string); 342 int offset = java_lang_String::offset(java_string); 343 int length = java_lang_String::length(java_string); 344 345 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset); 346 if (base == NULL) return NULL; 347 348 int result_length = UNICODE::quoted_ascii_length(base, length) + 1; 349 char* result = NEW_RESOURCE_ARRAY(char, result_length); 350 UNICODE::as_quoted_ascii(base, length, result, result_length); 351 assert(result_length >= length + 1, "must not be shorter"); 352 assert(result_length == (int)strlen(result) + 1, "must match"); 353 return result; 354 } 355 356 unsigned int java_lang_String::hash_string(oop java_string) { 357 int length = java_lang_String::length(java_string); 358 // Zero length string doesn't hash necessarily hash to zero. 359 if (length == 0) { 360 return StringTable::hash_string(NULL, 0); 361 } 362 363 typeArrayOop value = java_lang_String::value(java_string); 364 int offset = java_lang_String::offset(java_string); 365 return StringTable::hash_string(value->char_at_addr(offset), length); 366 } 367 368 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) { 369 oop obj = java_string(); 370 typeArrayOop value = java_lang_String::value(obj); 371 int offset = java_lang_String::offset(obj); 372 int length = java_lang_String::length(obj); 373 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset); 374 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD); 375 return sym; 376 } 377 378 Symbol* java_lang_String::as_symbol_or_null(oop java_string) { 379 typeArrayOop value = java_lang_String::value(java_string); 380 int offset = java_lang_String::offset(java_string); 381 int length = java_lang_String::length(java_string); 382 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset); 383 return SymbolTable::probe_unicode(base, length); 384 } 385 386 387 int java_lang_String::utf8_length(oop java_string) { 388 typeArrayOop value = java_lang_String::value(java_string); 389 int offset = java_lang_String::offset(java_string); 390 int length = java_lang_String::length(java_string); 391 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); 392 return UNICODE::utf8_length(position, length); 393 } 394 395 char* java_lang_String::as_utf8_string(oop java_string) { 396 typeArrayOop value = java_lang_String::value(java_string); 397 int offset = java_lang_String::offset(java_string); 398 int length = java_lang_String::length(java_string); 399 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); 400 return UNICODE::as_utf8(position, length); 401 } 402 403 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) { 404 typeArrayOop value = java_lang_String::value(java_string); 405 int offset = java_lang_String::offset(java_string); 406 int length = java_lang_String::length(java_string); 407 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); 408 return UNICODE::as_utf8(position, length, buf, buflen); 409 } 410 411 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) { 412 typeArrayOop value = java_lang_String::value(java_string); 413 int offset = java_lang_String::offset(java_string); 414 int length = java_lang_String::length(java_string); 415 assert(start + len <= length, "just checking"); 416 jchar* position = value->char_at_addr(offset + start); 417 return UNICODE::as_utf8(position, len); 418 } 419 420 bool java_lang_String::equals(oop java_string, jchar* chars, int len) { 421 assert(java_string->klass() == SystemDictionary::String_klass(), 422 "must be java_string"); 423 typeArrayOop value = java_lang_String::value(java_string); 424 int offset = java_lang_String::offset(java_string); 425 int length = java_lang_String::length(java_string); 426 if (length != len) { 427 return false; 428 } 429 for (int i = 0; i < len; i++) { 430 if (value->char_at(i + offset) != chars[i]) { 431 return false; 432 } 433 } 434 return true; 435 } 436 437 void java_lang_String::print(Handle java_string, outputStream* st) { 438 oop obj = java_string(); 439 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string"); 440 typeArrayOop value = java_lang_String::value(obj); 441 int offset = java_lang_String::offset(obj); 442 int length = java_lang_String::length(obj); 443 444 int end = MIN2(length, 100); 445 if (value == NULL) { 446 // This can happen if, e.g., printing a String 447 // object before its initializer has been called 448 st->print_cr("NULL"); 449 } else { 450 st->print("\""); 451 for (int index = 0; index < length; index++) { 452 st->print("%c", value->char_at(index + offset)); 453 } 454 st->print("\""); 455 } 456 } 457 458 static void initialize_static_field(fieldDescriptor* fd, TRAPS) { 459 Handle mirror (THREAD, fd->field_holder()->java_mirror()); 460 assert(mirror.not_null() && fd->is_static(), "just checking"); 461 if (fd->has_initial_value()) { 462 BasicType t = fd->field_type(); 463 switch (t) { 464 case T_BYTE: 465 mirror()->byte_field_put(fd->offset(), fd->int_initial_value()); 466 break; 467 case T_BOOLEAN: 468 mirror()->bool_field_put(fd->offset(), fd->int_initial_value()); 469 break; 470 case T_CHAR: 471 mirror()->char_field_put(fd->offset(), fd->int_initial_value()); 472 break; 473 case T_SHORT: 474 mirror()->short_field_put(fd->offset(), fd->int_initial_value()); 475 break; 476 case T_INT: 477 mirror()->int_field_put(fd->offset(), fd->int_initial_value()); 478 break; 479 case T_FLOAT: 480 mirror()->float_field_put(fd->offset(), fd->float_initial_value()); 481 break; 482 case T_DOUBLE: 483 mirror()->double_field_put(fd->offset(), fd->double_initial_value()); 484 break; 485 case T_LONG: 486 mirror()->long_field_put(fd->offset(), fd->long_initial_value()); 487 break; 488 case T_OBJECT: 489 { 490 #ifdef ASSERT 491 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK); 492 assert(fd->signature() == sym, "just checking"); 493 #endif 494 oop string = fd->string_initial_value(CHECK); 495 mirror()->obj_field_put(fd->offset(), string); 496 } 497 break; 498 default: 499 THROW_MSG(vmSymbols::java_lang_ClassFormatError(), 500 "Illegal ConstantValue attribute in class file"); 501 } 502 } 503 } 504 505 506 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) { 507 assert(InstanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already"); 508 509 // If the offset was read from the shared archive, it was fixed up already 510 if (!k->is_shared()) { 511 if (k->oop_is_instance()) { 512 // During bootstrap, java.lang.Class wasn't loaded so static field 513 // offsets were computed without the size added it. Go back and 514 // update all the static field offsets to included the size. 515 for (JavaFieldStream fs(InstanceKlass::cast(k())); !fs.done(); fs.next()) { 516 if (fs.access_flags().is_static()) { 517 int real_offset = fs.offset() + InstanceMirrorKlass::offset_of_static_fields(); 518 fs.set_offset(real_offset); 519 } 520 } 521 } 522 } 523 create_mirror(k, CHECK); 524 } 525 526 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) { 527 assert(k->java_mirror() == NULL, "should only assign mirror once"); 528 // Use this moment of initialization to cache modifier_flags also, 529 // to support Class.getModifiers(). Instance classes recalculate 530 // the cached flags after the class file is parsed, but before the 531 // class is put into the system dictionary. 532 int computed_modifiers = k->compute_modifier_flags(CHECK_0); 533 k->set_modifier_flags(computed_modifiers); 534 // Class_klass has to be loaded because it is used to allocate 535 // the mirror. 536 if (SystemDictionary::Class_klass_loaded()) { 537 // Allocate mirror (java.lang.Class instance) 538 Handle mirror = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0); 539 540 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(mirror->klass()); 541 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror())); 542 543 // It might also have a component mirror. This mirror must already exist. 544 if (k->oop_is_array()) { 545 Handle comp_mirror; 546 if (k->oop_is_typeArray()) { 547 BasicType type = TypeArrayKlass::cast(k())->element_type(); 548 comp_mirror = Universe::java_mirror(type); 549 } else { 550 assert(k->oop_is_objArray(), "Must be"); 551 Klass* element_klass = ObjArrayKlass::cast(k())->element_klass(); 552 assert(element_klass != NULL, "Must have an element klass"); 553 comp_mirror = element_klass->java_mirror(); 554 } 555 assert(comp_mirror.not_null(), "must have a mirror"); 556 557 // Two-way link between the array klass and its component mirror: 558 ArrayKlass::cast(k())->set_component_mirror(comp_mirror()); 559 set_array_klass(comp_mirror(), k()); 560 } else { 561 assert(k->oop_is_instance(), "Must be"); 562 // Initialize static fields 563 InstanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL); 564 } 565 return mirror(); 566 } else { 567 if (fixup_mirror_list() == NULL) { 568 GrowableArray<Klass*>* list = 569 new (ResourceObj::C_HEAP, mtClass) GrowableArray<Klass*>(40, true); 570 set_fixup_mirror_list(list); 571 } 572 fixup_mirror_list()->push(k()); 573 return NULL; 574 } 575 } 576 577 578 579 int java_lang_Class::oop_size(oop java_class) { 580 assert(_oop_size_offset != 0, "must be set"); 581 return java_class->int_field(_oop_size_offset); 582 } 583 void java_lang_Class::set_oop_size(oop java_class, int size) { 584 assert(_oop_size_offset != 0, "must be set"); 585 java_class->int_field_put(_oop_size_offset, size); 586 } 587 int java_lang_Class::static_oop_field_count(oop java_class) { 588 assert(_static_oop_field_count_offset != 0, "must be set"); 589 return java_class->int_field(_static_oop_field_count_offset); 590 } 591 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) { 592 assert(_static_oop_field_count_offset != 0, "must be set"); 593 java_class->int_field_put(_static_oop_field_count_offset, size); 594 } 595 596 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) { 597 // This should be improved by adding a field at the Java level or by 598 // introducing a new VM klass (see comment in ClassFileParser) 599 oop java_class = InstanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(NULL, CHECK_0); 600 if (type != T_VOID) { 601 Klass* aklass = Universe::typeArrayKlassObj(type); 602 assert(aklass != NULL, "correct bootstrap"); 603 set_array_klass(java_class, aklass); 604 } 605 #ifdef ASSERT 606 InstanceMirrorKlass* mk = InstanceMirrorKlass::cast(SystemDictionary::Class_klass()); 607 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation"); 608 #endif 609 return java_class; 610 } 611 612 613 Klass* java_lang_Class::as_Klass(oop java_class) { 614 //%note memory_2 615 assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 616 Klass* k = ((Klass*)java_class->metadata_field(_klass_offset)); 617 assert(k == NULL || k->is_klass(), "type check"); 618 return k; 619 } 620 621 622 void java_lang_Class::set_klass(oop java_class, Klass* klass) { 623 assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 624 java_class->metadata_field_put(_klass_offset, klass); 625 } 626 627 628 void java_lang_Class::print_signature(oop java_class, outputStream* st) { 629 assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 630 Symbol* name = NULL; 631 bool is_instance = false; 632 if (is_primitive(java_class)) { 633 name = vmSymbols::type_signature(primitive_type(java_class)); 634 } else { 635 Klass* k = as_Klass(java_class); 636 is_instance = k->oop_is_instance(); 637 name = k->name(); 638 } 639 if (name == NULL) { 640 st->print("<null>"); 641 return; 642 } 643 if (is_instance) st->print("L"); 644 st->write((char*) name->base(), (int) name->utf8_length()); 645 if (is_instance) st->print(";"); 646 } 647 648 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) { 649 assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 650 Symbol* name; 651 if (is_primitive(java_class)) { 652 name = vmSymbols::type_signature(primitive_type(java_class)); 653 // Because this can create a new symbol, the caller has to decrement 654 // the refcount, so make adjustment here and below for symbols returned 655 // that are not created or incremented due to a successful lookup. 656 name->increment_refcount(); 657 } else { 658 Klass* k = as_Klass(java_class); 659 if (!k->oop_is_instance()) { 660 name = k->name(); 661 name->increment_refcount(); 662 } else { 663 ResourceMark rm; 664 const char* sigstr = k->signature_name(); 665 int siglen = (int) strlen(sigstr); 666 if (!intern_if_not_found) { 667 name = SymbolTable::probe(sigstr, siglen); 668 } else { 669 name = SymbolTable::new_symbol(sigstr, siglen, THREAD); 670 } 671 } 672 } 673 return name; 674 } 675 676 677 Klass* java_lang_Class::array_klass(oop java_class) { 678 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset)); 679 assert(k == NULL || k->is_klass() && k->oop_is_array(), "should be array klass"); 680 return k; 681 } 682 683 684 void java_lang_Class::set_array_klass(oop java_class, Klass* klass) { 685 assert(klass->is_klass() && klass->oop_is_array(), "should be array klass"); 686 java_class->metadata_field_put(_array_klass_offset, klass); 687 } 688 689 690 Method* java_lang_Class::resolved_constructor(oop java_class) { 691 Metadata* constructor = java_class->metadata_field(_resolved_constructor_offset); 692 assert(constructor == NULL || constructor->is_method(), "should be method"); 693 return ((Method*)constructor); 694 } 695 696 697 void java_lang_Class::set_resolved_constructor(oop java_class, Method* constructor) { 698 assert(constructor->is_method(), "should be method"); 699 java_class->metadata_field_put(_resolved_constructor_offset, constructor); 700 } 701 702 703 bool java_lang_Class::is_primitive(oop java_class) { 704 // should assert: 705 //assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 706 bool is_primitive = (java_class->metadata_field(_klass_offset) == NULL); 707 708 #ifdef ASSERT 709 if (is_primitive) { 710 Klass* k = ((Klass*)java_class->metadata_field(_array_klass_offset)); 711 assert(k == NULL || is_java_primitive(ArrayKlass::cast(k)->element_type()), 712 "Should be either the T_VOID primitive or a java primitive"); 713 } 714 #endif 715 716 return is_primitive; 717 } 718 719 720 BasicType java_lang_Class::primitive_type(oop java_class) { 721 assert(java_lang_Class::is_primitive(java_class), "just checking"); 722 Klass* ak = ((Klass*)java_class->metadata_field(_array_klass_offset)); 723 BasicType type = T_VOID; 724 if (ak != NULL) { 725 // Note: create_basic_type_mirror above initializes ak to a non-null value. 726 type = ArrayKlass::cast(ak)->element_type(); 727 } else { 728 assert(java_class == Universe::void_mirror(), "only valid non-array primitive"); 729 } 730 assert(Universe::java_mirror(type) == java_class, "must be consistent"); 731 return type; 732 } 733 734 BasicType java_lang_Class::as_BasicType(oop java_class, Klass** reference_klass) { 735 assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 736 if (is_primitive(java_class)) { 737 if (reference_klass != NULL) 738 (*reference_klass) = NULL; 739 return primitive_type(java_class); 740 } else { 741 if (reference_klass != NULL) 742 (*reference_klass) = as_Klass(java_class); 743 return T_OBJECT; 744 } 745 } 746 747 748 oop java_lang_Class::primitive_mirror(BasicType t) { 749 oop mirror = Universe::java_mirror(t); 750 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class"); 751 assert(java_lang_Class::is_primitive(mirror), "must be primitive"); 752 return mirror; 753 } 754 755 bool java_lang_Class::offsets_computed = false; 756 int java_lang_Class::classRedefinedCount_offset = -1; 757 758 void java_lang_Class::compute_offsets() { 759 assert(!offsets_computed, "offsets should be initialized only once"); 760 offsets_computed = true; 761 762 Klass* klass_oop = SystemDictionary::Class_klass(); 763 // The classRedefinedCount field is only present starting in 1.5, 764 // so don't go fatal. 765 compute_optional_offset(classRedefinedCount_offset, 766 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature()); 767 768 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 769 } 770 771 int java_lang_Class::classRedefinedCount(oop the_class_mirror) { 772 if (!JDK_Version::is_gte_jdk15x_version() 773 || classRedefinedCount_offset == -1) { 774 // The classRedefinedCount field is only present starting in 1.5. 775 // If we don't have an offset for it then just return -1 as a marker. 776 return -1; 777 } 778 779 return the_class_mirror->int_field(classRedefinedCount_offset); 780 } 781 782 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) { 783 if (!JDK_Version::is_gte_jdk15x_version() 784 || classRedefinedCount_offset == -1) { 785 // The classRedefinedCount field is only present starting in 1.5. 786 // If we don't have an offset for it then nothing to set. 787 return; 788 } 789 790 the_class_mirror->int_field_put(classRedefinedCount_offset, value); 791 } 792 793 794 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the 795 // platform thread structure, and a eetop offset which was used for thread 796 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures 797 // merged, so in the HotSpot VM we just use the eetop field for the thread 798 // instead of the privateInfo_offset. 799 // 800 // Note: The stackSize field is only present starting in 1.4. 801 802 int java_lang_Thread::_name_offset = 0; 803 int java_lang_Thread::_group_offset = 0; 804 int java_lang_Thread::_contextClassLoader_offset = 0; 805 int java_lang_Thread::_inheritedAccessControlContext_offset = 0; 806 int java_lang_Thread::_priority_offset = 0; 807 int java_lang_Thread::_eetop_offset = 0; 808 int java_lang_Thread::_daemon_offset = 0; 809 int java_lang_Thread::_stillborn_offset = 0; 810 int java_lang_Thread::_stackSize_offset = 0; 811 int java_lang_Thread::_tid_offset = 0; 812 int java_lang_Thread::_thread_status_offset = 0; 813 int java_lang_Thread::_park_blocker_offset = 0; 814 int java_lang_Thread::_park_event_offset = 0 ; 815 816 817 void java_lang_Thread::compute_offsets() { 818 assert(_group_offset == 0, "offsets should be initialized only once"); 819 820 Klass* k = SystemDictionary::Thread_klass(); 821 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature()); 822 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature()); 823 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature()); 824 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature()); 825 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature()); 826 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); 827 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature()); 828 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature()); 829 // The stackSize field is only present starting in 1.4, so don't go fatal. 830 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature()); 831 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal. 832 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature()); 833 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature()); 834 // The parkBlocker field is only present starting in 1.6, so don't go fatal. 835 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature()); 836 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(), 837 vmSymbols::long_signature()); 838 } 839 840 841 JavaThread* java_lang_Thread::thread(oop java_thread) { 842 return (JavaThread*)java_thread->address_field(_eetop_offset); 843 } 844 845 846 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) { 847 java_thread->address_field_put(_eetop_offset, (address)thread); 848 } 849 850 851 typeArrayOop java_lang_Thread::name(oop java_thread) { 852 oop name = java_thread->obj_field(_name_offset); 853 assert(name == NULL || (name->is_typeArray() && TypeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking"); 854 return typeArrayOop(name); 855 } 856 857 858 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) { 859 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL"); 860 java_thread->obj_field_put(_name_offset, name); 861 } 862 863 864 ThreadPriority java_lang_Thread::priority(oop java_thread) { 865 return (ThreadPriority)java_thread->int_field(_priority_offset); 866 } 867 868 869 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) { 870 java_thread->int_field_put(_priority_offset, priority); 871 } 872 873 874 oop java_lang_Thread::threadGroup(oop java_thread) { 875 return java_thread->obj_field(_group_offset); 876 } 877 878 879 bool java_lang_Thread::is_stillborn(oop java_thread) { 880 return java_thread->bool_field(_stillborn_offset) != 0; 881 } 882 883 884 // We never have reason to turn the stillborn bit off 885 void java_lang_Thread::set_stillborn(oop java_thread) { 886 java_thread->bool_field_put(_stillborn_offset, true); 887 } 888 889 890 bool java_lang_Thread::is_alive(oop java_thread) { 891 JavaThread* thr = java_lang_Thread::thread(java_thread); 892 return (thr != NULL); 893 } 894 895 896 bool java_lang_Thread::is_daemon(oop java_thread) { 897 return java_thread->bool_field(_daemon_offset) != 0; 898 } 899 900 901 void java_lang_Thread::set_daemon(oop java_thread) { 902 java_thread->bool_field_put(_daemon_offset, true); 903 } 904 905 oop java_lang_Thread::context_class_loader(oop java_thread) { 906 return java_thread->obj_field(_contextClassLoader_offset); 907 } 908 909 oop java_lang_Thread::inherited_access_control_context(oop java_thread) { 910 return java_thread->obj_field(_inheritedAccessControlContext_offset); 911 } 912 913 914 jlong java_lang_Thread::stackSize(oop java_thread) { 915 // The stackSize field is only present starting in 1.4 916 if (_stackSize_offset > 0) { 917 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check"); 918 return java_thread->long_field(_stackSize_offset); 919 } else { 920 return 0; 921 } 922 } 923 924 // Write the thread status value to threadStatus field in java.lang.Thread java class. 925 void java_lang_Thread::set_thread_status(oop java_thread, 926 java_lang_Thread::ThreadStatus status) { 927 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm"); 928 // The threadStatus is only present starting in 1.5 929 if (_thread_status_offset > 0) { 930 java_thread->int_field_put(_thread_status_offset, status); 931 } 932 } 933 934 // Read thread status value from threadStatus field in java.lang.Thread java class. 935 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) { 936 assert(Thread::current()->is_VM_thread() || 937 JavaThread::current()->thread_state() == _thread_in_vm, 938 "Java Thread is not running in vm"); 939 // The threadStatus is only present starting in 1.5 940 if (_thread_status_offset > 0) { 941 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); 942 } else { 943 // All we can easily figure out is if it is alive, but that is 944 // enough info for a valid unknown status. 945 // These aren't restricted to valid set ThreadStatus values, so 946 // use JVMTI values and cast. 947 JavaThread* thr = java_lang_Thread::thread(java_thread); 948 if (thr == NULL) { 949 // the thread hasn't run yet or is in the process of exiting 950 return NEW; 951 } 952 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE; 953 } 954 } 955 956 957 jlong java_lang_Thread::thread_id(oop java_thread) { 958 // The thread ID field is only present starting in 1.5 959 if (_tid_offset > 0) { 960 return java_thread->long_field(_tid_offset); 961 } else { 962 return 0; 963 } 964 } 965 966 oop java_lang_Thread::park_blocker(oop java_thread) { 967 assert(JDK_Version::current().supports_thread_park_blocker() && 968 _park_blocker_offset != 0, "Must support parkBlocker field"); 969 970 if (_park_blocker_offset > 0) { 971 return java_thread->obj_field(_park_blocker_offset); 972 } 973 974 return NULL; 975 } 976 977 jlong java_lang_Thread::park_event(oop java_thread) { 978 if (_park_event_offset > 0) { 979 return java_thread->long_field(_park_event_offset); 980 } 981 return 0; 982 } 983 984 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) { 985 if (_park_event_offset > 0) { 986 java_thread->long_field_put(_park_event_offset, ptr); 987 return true; 988 } 989 return false; 990 } 991 992 993 const char* java_lang_Thread::thread_status_name(oop java_thread) { 994 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status"); 995 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); 996 switch (status) { 997 case NEW : return "NEW"; 998 case RUNNABLE : return "RUNNABLE"; 999 case SLEEPING : return "TIMED_WAITING (sleeping)"; 1000 case IN_OBJECT_WAIT : return "WAITING (on object monitor)"; 1001 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)"; 1002 case PARKED : return "WAITING (parking)"; 1003 case PARKED_TIMED : return "TIMED_WAITING (parking)"; 1004 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)"; 1005 case TERMINATED : return "TERMINATED"; 1006 default : return "UNKNOWN"; 1007 }; 1008 } 1009 int java_lang_ThreadGroup::_parent_offset = 0; 1010 int java_lang_ThreadGroup::_name_offset = 0; 1011 int java_lang_ThreadGroup::_threads_offset = 0; 1012 int java_lang_ThreadGroup::_groups_offset = 0; 1013 int java_lang_ThreadGroup::_maxPriority_offset = 0; 1014 int java_lang_ThreadGroup::_destroyed_offset = 0; 1015 int java_lang_ThreadGroup::_daemon_offset = 0; 1016 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0; 1017 int java_lang_ThreadGroup::_nthreads_offset = 0; 1018 int java_lang_ThreadGroup::_ngroups_offset = 0; 1019 1020 oop java_lang_ThreadGroup::parent(oop java_thread_group) { 1021 assert(java_thread_group->is_oop(), "thread group must be oop"); 1022 return java_thread_group->obj_field(_parent_offset); 1023 } 1024 1025 // ("name as oop" accessor is not necessary) 1026 1027 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) { 1028 oop name = java_thread_group->obj_field(_name_offset); 1029 // ThreadGroup.name can be null 1030 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name); 1031 } 1032 1033 int java_lang_ThreadGroup::nthreads(oop java_thread_group) { 1034 assert(java_thread_group->is_oop(), "thread group must be oop"); 1035 return java_thread_group->int_field(_nthreads_offset); 1036 } 1037 1038 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) { 1039 oop threads = java_thread_group->obj_field(_threads_offset); 1040 assert(threads != NULL, "threadgroups should have threads"); 1041 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code 1042 return objArrayOop(threads); 1043 } 1044 1045 int java_lang_ThreadGroup::ngroups(oop java_thread_group) { 1046 assert(java_thread_group->is_oop(), "thread group must be oop"); 1047 return java_thread_group->int_field(_ngroups_offset); 1048 } 1049 1050 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) { 1051 oop groups = java_thread_group->obj_field(_groups_offset); 1052 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code 1053 return objArrayOop(groups); 1054 } 1055 1056 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) { 1057 assert(java_thread_group->is_oop(), "thread group must be oop"); 1058 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset); 1059 } 1060 1061 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) { 1062 assert(java_thread_group->is_oop(), "thread group must be oop"); 1063 return java_thread_group->bool_field(_destroyed_offset) != 0; 1064 } 1065 1066 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) { 1067 assert(java_thread_group->is_oop(), "thread group must be oop"); 1068 return java_thread_group->bool_field(_daemon_offset) != 0; 1069 } 1070 1071 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) { 1072 assert(java_thread_group->is_oop(), "thread group must be oop"); 1073 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0; 1074 } 1075 1076 void java_lang_ThreadGroup::compute_offsets() { 1077 assert(_parent_offset == 0, "offsets should be initialized only once"); 1078 1079 Klass* k = SystemDictionary::ThreadGroup_klass(); 1080 1081 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature()); 1082 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); 1083 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature()); 1084 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature()); 1085 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature()); 1086 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature()); 1087 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); 1088 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature()); 1089 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature()); 1090 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature()); 1091 } 1092 1093 oop java_lang_Throwable::unassigned_stacktrace() { 1094 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Throwable_klass()); 1095 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset); 1096 if (UseCompressedOops) { 1097 return oopDesc::load_decode_heap_oop((narrowOop *)addr); 1098 } else { 1099 return oopDesc::load_decode_heap_oop((oop*)addr); 1100 } 1101 } 1102 1103 oop java_lang_Throwable::backtrace(oop throwable) { 1104 return throwable->obj_field_acquire(backtrace_offset); 1105 } 1106 1107 1108 void java_lang_Throwable::set_backtrace(oop throwable, oop value) { 1109 throwable->release_obj_field_put(backtrace_offset, value); 1110 } 1111 1112 1113 oop java_lang_Throwable::message(oop throwable) { 1114 return throwable->obj_field(detailMessage_offset); 1115 } 1116 1117 1118 oop java_lang_Throwable::message(Handle throwable) { 1119 return throwable->obj_field(detailMessage_offset); 1120 } 1121 1122 1123 void java_lang_Throwable::set_message(oop throwable, oop value) { 1124 throwable->obj_field_put(detailMessage_offset, value); 1125 } 1126 1127 1128 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) { 1129 throwable->obj_field_put(stackTrace_offset, st_element_array); 1130 } 1131 1132 void java_lang_Throwable::clear_stacktrace(oop throwable) { 1133 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); 1134 set_stacktrace(throwable, NULL); 1135 } 1136 1137 1138 void java_lang_Throwable::print(oop throwable, outputStream* st) { 1139 ResourceMark rm; 1140 Klass* k = throwable->klass(); 1141 assert(k != NULL, "just checking"); 1142 st->print("%s", InstanceKlass::cast(k)->external_name()); 1143 oop msg = message(throwable); 1144 if (msg != NULL) { 1145 st->print(": %s", java_lang_String::as_utf8_string(msg)); 1146 } 1147 } 1148 1149 1150 void java_lang_Throwable::print(Handle throwable, outputStream* st) { 1151 ResourceMark rm; 1152 Klass* k = throwable->klass(); 1153 assert(k != NULL, "just checking"); 1154 st->print("%s", InstanceKlass::cast(k)->external_name()); 1155 oop msg = message(throwable); 1156 if (msg != NULL) { 1157 st->print(": %s", java_lang_String::as_utf8_string(msg)); 1158 } 1159 } 1160 1161 // Print stack trace element to resource allocated buffer 1162 char* java_lang_Throwable::print_stack_element_to_buffer(Method* method, int bci) { 1163 // Get strings and string lengths 1164 InstanceKlass* klass = method->method_holder(); 1165 const char* klass_name = klass->external_name(); 1166 int buf_len = (int)strlen(klass_name); 1167 char* source_file_name; 1168 if (klass->source_file_name() == NULL) { 1169 source_file_name = NULL; 1170 } else { 1171 source_file_name = klass->source_file_name()->as_C_string(); 1172 buf_len += (int)strlen(source_file_name); 1173 } 1174 char* method_name = method->name()->as_C_string(); 1175 buf_len += (int)strlen(method_name); 1176 1177 // Allocate temporary buffer with extra space for formatting and line number 1178 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64); 1179 1180 // Print stack trace line in buffer 1181 sprintf(buf, "\tat %s.%s", klass_name, method_name); 1182 if (method->is_native()) { 1183 strcat(buf, "(Native Method)"); 1184 } else { 1185 int line_number = method->line_number_from_bci(bci); 1186 if (source_file_name != NULL && (line_number != -1)) { 1187 // Sourcename and linenumber 1188 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number); 1189 } else if (source_file_name != NULL) { 1190 // Just sourcename 1191 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name); 1192 } else { 1193 // Neither soucename and linenumber 1194 sprintf(buf + (int)strlen(buf), "(Unknown Source)"); 1195 } 1196 nmethod* nm = method->code(); 1197 if (WizardMode && nm != NULL) { 1198 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm); 1199 } 1200 } 1201 1202 return buf; 1203 } 1204 1205 1206 void java_lang_Throwable::print_stack_element(Handle stream, Method* method, int bci) { 1207 ResourceMark rm; 1208 char* buf = print_stack_element_to_buffer(method, bci); 1209 print_to_stream(stream, buf); 1210 } 1211 1212 void java_lang_Throwable::print_stack_element(outputStream *st, Method* method, int bci) { 1213 ResourceMark rm; 1214 char* buf = print_stack_element_to_buffer(method, bci); 1215 st->print_cr("%s", buf); 1216 } 1217 1218 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) { 1219 if (stream.is_null()) { 1220 tty->print_cr("%s", str); 1221 } else { 1222 EXCEPTION_MARK; 1223 JavaValue result(T_VOID); 1224 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD)); 1225 if (!HAS_PENDING_EXCEPTION) { 1226 JavaCalls::call_virtual(&result, 1227 stream, 1228 KlassHandle(THREAD, stream->klass()), 1229 vmSymbols::println_name(), 1230 vmSymbols::char_array_void_signature(), 1231 arg, 1232 THREAD); 1233 } 1234 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. 1235 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; 1236 } 1237 1238 } 1239 1240 1241 const char* java_lang_Throwable::no_stack_trace_message() { 1242 return "\t<<no stack trace available>>"; 1243 } 1244 1245 1246 // Currently used only for exceptions occurring during startup 1247 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) { 1248 Thread *THREAD = Thread::current(); 1249 Handle h_throwable(THREAD, throwable); 1250 while (h_throwable.not_null()) { 1251 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable()))); 1252 if (result.is_null()) { 1253 st->print_cr(no_stack_trace_message()); 1254 return; 1255 } 1256 1257 while (result.not_null()) { 1258 typeArrayHandle methods (THREAD, 1259 typeArrayOop(result->obj_at(trace_methods_offset))); 1260 typeArrayHandle bcis (THREAD, 1261 typeArrayOop(result->obj_at(trace_bcis_offset))); 1262 1263 if (methods.is_null() || bcis.is_null()) { 1264 st->print_cr(no_stack_trace_message()); 1265 return; 1266 } 1267 1268 int length = methods()->length(); 1269 for (int index = 0; index < length; index++) { 1270 Method* method = ((Method*)methods()->metadata_at(index)); 1271 if (method == NULL) goto handle_cause; 1272 int bci = bcis->ushort_at(index); 1273 print_stack_element(st, method, bci); 1274 } 1275 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset))); 1276 } 1277 handle_cause: 1278 { 1279 EXCEPTION_MARK; 1280 JavaValue result(T_OBJECT); 1281 JavaCalls::call_virtual(&result, 1282 h_throwable, 1283 KlassHandle(THREAD, h_throwable->klass()), 1284 vmSymbols::getCause_name(), 1285 vmSymbols::void_throwable_signature(), 1286 THREAD); 1287 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. 1288 if (HAS_PENDING_EXCEPTION) { 1289 CLEAR_PENDING_EXCEPTION; 1290 h_throwable = Handle(); 1291 } else { 1292 h_throwable = Handle(THREAD, (oop) result.get_jobject()); 1293 if (h_throwable.not_null()) { 1294 st->print("Caused by: "); 1295 print(h_throwable, st); 1296 st->cr(); 1297 } 1298 } 1299 } 1300 } 1301 } 1302 1303 1304 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) { 1305 // Note: this is no longer used in Merlin, but we support it for compatibility. 1306 Thread *thread = Thread::current(); 1307 Handle stream(thread, print_stream); 1308 objArrayHandle result (thread, objArrayOop(backtrace(throwable))); 1309 if (result.is_null()) { 1310 print_to_stream(stream, no_stack_trace_message()); 1311 return; 1312 } 1313 1314 while (result.not_null()) { 1315 typeArrayHandle methods(thread, 1316 typeArrayOop(result->obj_at(trace_methods_offset))); 1317 typeArrayHandle bcis (thread, 1318 typeArrayOop(result->obj_at(trace_bcis_offset))); 1319 1320 if (methods.is_null() || bcis.is_null()) { 1321 print_to_stream(stream, no_stack_trace_message()); 1322 return; 1323 } 1324 1325 int length = methods()->length(); 1326 for (int index = 0; index < length; index++) { 1327 Method* method = ((Method*)methods()->metadata_at(index)); 1328 if (method == NULL) return; 1329 int bci = bcis->ushort_at(index); 1330 print_stack_element(stream, method, bci); 1331 } 1332 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset))); 1333 } 1334 } 1335 1336 // This class provides a simple wrapper over the internal structure of 1337 // exception backtrace to insulate users of the backtrace from needing 1338 // to know what it looks like. 1339 class BacktraceBuilder: public StackObj { 1340 private: 1341 Handle _backtrace; 1342 objArrayOop _head; 1343 typeArrayOop _methods; 1344 typeArrayOop _bcis; 1345 objArrayOop _mirrors; 1346 int _index; 1347 No_Safepoint_Verifier _nsv; 1348 1349 public: 1350 1351 enum { 1352 trace_methods_offset = java_lang_Throwable::trace_methods_offset, 1353 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset, 1354 trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset, 1355 trace_next_offset = java_lang_Throwable::trace_next_offset, 1356 trace_size = java_lang_Throwable::trace_size, 1357 trace_chunk_size = java_lang_Throwable::trace_chunk_size 1358 }; 1359 1360 // constructor for new backtrace 1361 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL), _mirrors(NULL) { 1362 expand(CHECK); 1363 _backtrace = _head; 1364 _index = 0; 1365 } 1366 1367 void expand(TRAPS) { 1368 objArrayHandle old_head(THREAD, _head); 1369 Pause_No_Safepoint_Verifier pnsv(&_nsv); 1370 1371 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK); 1372 objArrayHandle new_head(THREAD, head); 1373 1374 typeArrayOop methods = oopFactory::new_metaDataArray(trace_chunk_size, CHECK); 1375 typeArrayHandle new_methods(THREAD, methods); 1376 1377 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK); 1378 typeArrayHandle new_bcis(THREAD, bcis); 1379 1380 objArrayOop mirrors = oopFactory::new_objectArray(trace_chunk_size, CHECK); 1381 objArrayHandle new_mirrors(THREAD, mirrors); 1382 1383 if (!old_head.is_null()) { 1384 old_head->obj_at_put(trace_next_offset, new_head()); 1385 } 1386 new_head->obj_at_put(trace_methods_offset, new_methods()); 1387 new_head->obj_at_put(trace_bcis_offset, new_bcis()); 1388 new_head->obj_at_put(trace_mirrors_offset, new_mirrors()); 1389 1390 _head = new_head(); 1391 _methods = new_methods(); 1392 _bcis = new_bcis(); 1393 _mirrors = new_mirrors(); 1394 _index = 0; 1395 } 1396 1397 oop backtrace() { 1398 return _backtrace(); 1399 } 1400 1401 inline void push(Method* method, int bci, TRAPS) { 1402 // Smear the -1 bci to 0 since the array only holds unsigned 1403 // shorts. The later line number lookup would just smear the -1 1404 // to a 0 even if it could be recorded. 1405 if (bci == SynchronizationEntryBCI) bci = 0; 1406 assert(bci == (jushort)bci, "doesn't fit"); 1407 1408 if (_index >= trace_chunk_size) { 1409 methodHandle mhandle(THREAD, method); 1410 expand(CHECK); 1411 method = mhandle(); 1412 } 1413 1414 _methods->metadata_at_put(_index, method); 1415 _bcis->ushort_at_put(_index, bci); 1416 // we need to save the mirrors in the backtrace to keep the methods from 1417 // being unloaded if their class loader is unloaded while we still have 1418 // this stack trace. 1419 _mirrors->obj_at_put(_index, method->method_holder()->java_mirror()); 1420 _index++; 1421 } 1422 1423 Method* current_method() { 1424 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); 1425 return ((Method*)_methods->metadata_at(_index)); 1426 } 1427 1428 jushort current_bci() { 1429 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); 1430 return _bcis->ushort_at(_index); 1431 } 1432 }; 1433 1434 1435 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) { 1436 if (!StackTraceInThrowable) return; 1437 ResourceMark rm(THREAD); 1438 1439 // Start out by clearing the backtrace for this object, in case the VM 1440 // runs out of memory while allocating the stack trace 1441 set_backtrace(throwable(), NULL); 1442 if (JDK_Version::is_gte_jdk14x_version()) { 1443 // New since 1.4, clear lazily constructed Java level stacktrace if 1444 // refilling occurs 1445 // This is unnecessary in 1.7+ but harmless 1446 clear_stacktrace(throwable()); 1447 } 1448 1449 int max_depth = MaxJavaStackTraceDepth; 1450 JavaThread* thread = (JavaThread*)THREAD; 1451 BacktraceBuilder bt(CHECK); 1452 1453 // If there is no Java frame just return the method that was being called 1454 // with bci 0 1455 if (!thread->has_last_Java_frame()) { 1456 if (max_depth >= 1 && method() != NULL) { 1457 bt.push(method(), 0, CHECK); 1458 set_backtrace(throwable(), bt.backtrace()); 1459 } 1460 return; 1461 } 1462 1463 // Instead of using vframe directly, this version of fill_in_stack_trace 1464 // basically handles everything by hand. This significantly improved the 1465 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows. 1466 // See bug 6333838 for more details. 1467 // The "ASSERT" here is to verify this method generates the exactly same stack 1468 // trace as utilizing vframe. 1469 #ifdef ASSERT 1470 vframeStream st(thread); 1471 methodHandle st_method(THREAD, st.method()); 1472 #endif 1473 int total_count = 0; 1474 RegisterMap map(thread, false); 1475 int decode_offset = 0; 1476 nmethod* nm = NULL; 1477 bool skip_fillInStackTrace_check = false; 1478 bool skip_throwableInit_check = false; 1479 bool skip_hidden = !ShowHiddenFrames; 1480 1481 for (frame fr = thread->last_frame(); max_depth != total_count;) { 1482 Method* method = NULL; 1483 int bci = 0; 1484 1485 // Compiled java method case. 1486 if (decode_offset != 0) { 1487 DebugInfoReadStream stream(nm, decode_offset); 1488 decode_offset = stream.read_int(); 1489 method = (Method*)nm->metadata_at(stream.read_int()); 1490 bci = stream.read_bci(); 1491 } else { 1492 if (fr.is_first_frame()) break; 1493 address pc = fr.pc(); 1494 if (fr.is_interpreted_frame()) { 1495 intptr_t bcx = fr.interpreter_frame_bcx(); 1496 method = fr.interpreter_frame_method(); 1497 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx); 1498 fr = fr.sender(&map); 1499 } else { 1500 CodeBlob* cb = fr.cb(); 1501 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL 1502 // but non nmethod 1503 fr = fr.sender(&map); 1504 if (cb == NULL || !cb->is_nmethod()) { 1505 continue; 1506 } 1507 nm = (nmethod*)cb; 1508 if (nm->method()->is_native()) { 1509 method = nm->method(); 1510 bci = 0; 1511 } else { 1512 PcDesc* pd = nm->pc_desc_at(pc); 1513 decode_offset = pd->scope_decode_offset(); 1514 // if decode_offset is not equal to 0, it will execute the 1515 // "compiled java method case" at the beginning of the loop. 1516 continue; 1517 } 1518 } 1519 } 1520 #ifdef ASSERT 1521 assert(st_method() == method && st.bci() == bci, 1522 "Wrong stack trace"); 1523 st.next(); 1524 // vframeStream::method isn't GC-safe so store off a copy 1525 // of the Method* in case we GC. 1526 if (!st.at_end()) { 1527 st_method = st.method(); 1528 } 1529 #endif 1530 1531 // the format of the stacktrace will be: 1532 // - 1 or more fillInStackTrace frames for the exception class (skipped) 1533 // - 0 or more <init> methods for the exception class (skipped) 1534 // - rest of the stack 1535 1536 if (!skip_fillInStackTrace_check) { 1537 if ((method->name() == vmSymbols::fillInStackTrace_name() || 1538 method->name() == vmSymbols::fillInStackTrace0_name()) && 1539 throwable->is_a(method->method_holder())) { 1540 continue; 1541 } 1542 else { 1543 skip_fillInStackTrace_check = true; // gone past them all 1544 } 1545 } 1546 if (!skip_throwableInit_check) { 1547 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering"); 1548 1549 // skip <init> methods of the exception class and superclasses 1550 // This is simlar to classic VM. 1551 if (method->name() == vmSymbols::object_initializer_name() && 1552 throwable->is_a(method->method_holder())) { 1553 continue; 1554 } else { 1555 // there are none or we've seen them all - either way stop checking 1556 skip_throwableInit_check = true; 1557 } 1558 } 1559 if (method->is_hidden()) { 1560 if (skip_hidden) continue; 1561 } 1562 bt.push(method, bci, CHECK); 1563 total_count++; 1564 } 1565 1566 // Put completed stack trace into throwable object 1567 set_backtrace(throwable(), bt.backtrace()); 1568 } 1569 1570 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) { 1571 // No-op if stack trace is disabled 1572 if (!StackTraceInThrowable) { 1573 return; 1574 } 1575 1576 // Disable stack traces for some preallocated out of memory errors 1577 if (!Universe::should_fill_in_stack_trace(throwable)) { 1578 return; 1579 } 1580 1581 PRESERVE_EXCEPTION_MARK; 1582 1583 JavaThread* thread = JavaThread::active(); 1584 fill_in_stack_trace(throwable, method, thread); 1585 // ignore exceptions thrown during stack trace filling 1586 CLEAR_PENDING_EXCEPTION; 1587 } 1588 1589 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) { 1590 // Allocate stack trace - backtrace is created but not filled in 1591 1592 // No-op if stack trace is disabled 1593 if (!StackTraceInThrowable) return; 1594 1595 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK); 1596 objArrayHandle backtrace (THREAD, h_oop); 1597 typeArrayOop m_oop = oopFactory::new_metaDataArray(trace_chunk_size, CHECK); 1598 typeArrayHandle methods (THREAD, m_oop); 1599 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK); 1600 typeArrayHandle bcis(THREAD, b); 1601 objArrayOop mirror_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK); 1602 objArrayHandle mirrors (THREAD, mirror_oop); 1603 1604 // backtrace has space for one chunk (next is NULL) 1605 backtrace->obj_at_put(trace_methods_offset, methods()); 1606 backtrace->obj_at_put(trace_bcis_offset, bcis()); 1607 backtrace->obj_at_put(trace_mirrors_offset, mirrors()); 1608 set_backtrace(throwable(), backtrace()); 1609 } 1610 1611 1612 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) { 1613 // Fill in stack trace into preallocated backtrace (no GC) 1614 1615 // No-op if stack trace is disabled 1616 if (!StackTraceInThrowable) return; 1617 1618 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check"); 1619 1620 objArrayOop backtrace = (objArrayOop)java_lang_Throwable::backtrace(throwable()); 1621 assert(backtrace != NULL, "backtrace not preallocated"); 1622 1623 oop m = backtrace->obj_at(trace_methods_offset); 1624 typeArrayOop methods = typeArrayOop(m); 1625 assert(methods != NULL && methods->length() > 0, "method array not preallocated"); 1626 1627 oop b = backtrace->obj_at(trace_bcis_offset); 1628 typeArrayOop bcis = typeArrayOop(b); 1629 assert(bcis != NULL, "bci array not preallocated"); 1630 1631 oop mr = backtrace->obj_at(trace_mirrors_offset); 1632 objArrayOop mirrors = objArrayOop(mr); 1633 assert(mirrors != NULL, "bci array not preallocated"); 1634 1635 assert(methods->length() == bcis->length() && 1636 methods->length() == mirrors->length(), 1637 "method and bci arrays should match"); 1638 1639 JavaThread* thread = JavaThread::current(); 1640 ResourceMark rm(thread); 1641 vframeStream st(thread); 1642 1643 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init 1644 // methods as preallocated errors aren't created by "java" code. 1645 1646 // fill in as much stack trace as possible 1647 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth); 1648 int chunk_count = 0; 1649 1650 for (;!st.at_end(); st.next()) { 1651 // Add entry and smear the -1 bci to 0 since the array only holds 1652 // unsigned shorts. The later line number lookup would just smear 1653 // the -1 to a 0 even if it could be recorded. 1654 int bci = st.bci(); 1655 if (bci == SynchronizationEntryBCI) bci = 0; 1656 assert(bci == (jushort)bci, "doesn't fit"); 1657 bcis->ushort_at_put(chunk_count, bci); 1658 methods->metadata_at_put(chunk_count, st.method()); 1659 mirrors->obj_at_put(chunk_count, 1660 st.method()->method_holder()->java_mirror()); 1661 1662 chunk_count++; 1663 1664 // Bail-out for deep stacks 1665 if (chunk_count >= max_chunks) break; 1666 } 1667 1668 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support 1669 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround 1670 // can be removed in a JDK using this JVM version 1671 if (JDK_Version::is_gte_jdk17x_version()) { 1672 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace()); 1673 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized"); 1674 } 1675 1676 } 1677 1678 1679 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) { 1680 if (throwable == NULL) { 1681 THROW_0(vmSymbols::java_lang_NullPointerException()); 1682 } 1683 objArrayOop chunk = objArrayOop(backtrace(throwable)); 1684 int depth = 0; 1685 if (chunk != NULL) { 1686 // Iterate over chunks and count full ones 1687 while (true) { 1688 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset)); 1689 if (next == NULL) break; 1690 depth += trace_chunk_size; 1691 chunk = next; 1692 } 1693 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check"); 1694 // Count element in remaining partial chunk 1695 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset)); 1696 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); 1697 assert(methods != NULL && bcis != NULL, "sanity check"); 1698 for (int i = 0; i < methods->length(); i++) { 1699 if (methods->metadata_at(i) == NULL) break; 1700 depth++; 1701 } 1702 } 1703 return depth; 1704 } 1705 1706 1707 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) { 1708 if (throwable == NULL) { 1709 THROW_0(vmSymbols::java_lang_NullPointerException()); 1710 } 1711 if (index < 0) { 1712 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); 1713 } 1714 // Compute how many chunks to skip and index into actual chunk 1715 objArrayOop chunk = objArrayOop(backtrace(throwable)); 1716 int skip_chunks = index / trace_chunk_size; 1717 int chunk_index = index % trace_chunk_size; 1718 while (chunk != NULL && skip_chunks > 0) { 1719 chunk = objArrayOop(chunk->obj_at(trace_next_offset)); 1720 skip_chunks--; 1721 } 1722 if (chunk == NULL) { 1723 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); 1724 } 1725 // Get method,bci from chunk 1726 typeArrayOop methods = typeArrayOop(chunk->obj_at(trace_methods_offset)); 1727 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); 1728 assert(methods != NULL && bcis != NULL, "sanity check"); 1729 methodHandle method(THREAD, ((Method*)methods->metadata_at(chunk_index))); 1730 int bci = bcis->ushort_at(chunk_index); 1731 // Chunk can be partial full 1732 if (method.is_null()) { 1733 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); 1734 } 1735 1736 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0); 1737 return element; 1738 } 1739 1740 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) { 1741 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs 1742 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); 1743 1744 // Allocate java.lang.StackTraceElement instance 1745 Klass* k = SystemDictionary::StackTraceElement_klass(); 1746 assert(k != NULL, "must be loaded in 1.4+"); 1747 instanceKlassHandle ik (THREAD, k); 1748 if (ik->should_be_initialized()) { 1749 ik->initialize(CHECK_0); 1750 } 1751 1752 Handle element = ik->allocate_instance_handle(CHECK_0); 1753 // Fill in class name 1754 ResourceMark rm(THREAD); 1755 const char* str = method->method_holder()->external_name(); 1756 oop classname = StringTable::intern((char*) str, CHECK_0); 1757 java_lang_StackTraceElement::set_declaringClass(element(), classname); 1758 // Fill in method name 1759 oop methodname = StringTable::intern(method->name(), CHECK_0); 1760 java_lang_StackTraceElement::set_methodName(element(), methodname); 1761 // Fill in source file name 1762 Symbol* source = method->method_holder()->source_file_name(); 1763 if (ShowHiddenFrames && source == NULL) 1764 source = vmSymbols::unknown_class_name(); 1765 oop filename = StringTable::intern(source, CHECK_0); 1766 java_lang_StackTraceElement::set_fileName(element(), filename); 1767 // File in source line number 1768 int line_number; 1769 if (method->is_native()) { 1770 // Negative value different from -1 below, enabling Java code in 1771 // class java.lang.StackTraceElement to distinguish "native" from 1772 // "no LineNumberTable". 1773 line_number = -2; 1774 } else { 1775 // Returns -1 if no LineNumberTable, and otherwise actual line number 1776 line_number = method->line_number_from_bci(bci); 1777 if (line_number == -1 && ShowHiddenFrames) { 1778 line_number = bci + 1000000; 1779 } 1780 } 1781 java_lang_StackTraceElement::set_lineNumber(element(), line_number); 1782 1783 return element(); 1784 } 1785 1786 1787 void java_lang_reflect_AccessibleObject::compute_offsets() { 1788 Klass* k = SystemDictionary::reflect_AccessibleObject_klass(); 1789 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature()); 1790 } 1791 1792 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) { 1793 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1794 return (jboolean) reflect->bool_field(override_offset); 1795 } 1796 1797 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) { 1798 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1799 reflect->bool_field_put(override_offset, (int) value); 1800 } 1801 1802 void java_lang_reflect_Method::compute_offsets() { 1803 Klass* k = SystemDictionary::reflect_Method_klass(); 1804 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); 1805 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); 1806 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature()); 1807 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); 1808 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); 1809 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); 1810 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); 1811 // The generic signature and annotations fields are only present in 1.5 1812 signature_offset = -1; 1813 annotations_offset = -1; 1814 parameter_annotations_offset = -1; 1815 annotation_default_offset = -1; 1816 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); 1817 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); 1818 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); 1819 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature()); 1820 } 1821 1822 Handle java_lang_reflect_Method::create(TRAPS) { 1823 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1824 Klass* klass = SystemDictionary::reflect_Method_klass(); 1825 // This class is eagerly initialized during VM initialization, since we keep a refence 1826 // to one of the methods 1827 assert(InstanceKlass::cast(klass)->is_initialized(), "must be initialized"); 1828 return InstanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH); 1829 } 1830 1831 oop java_lang_reflect_Method::clazz(oop reflect) { 1832 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1833 return reflect->obj_field(clazz_offset); 1834 } 1835 1836 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) { 1837 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1838 reflect->obj_field_put(clazz_offset, value); 1839 } 1840 1841 int java_lang_reflect_Method::slot(oop reflect) { 1842 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1843 return reflect->int_field(slot_offset); 1844 } 1845 1846 void java_lang_reflect_Method::set_slot(oop reflect, int value) { 1847 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1848 reflect->int_field_put(slot_offset, value); 1849 } 1850 1851 oop java_lang_reflect_Method::name(oop method) { 1852 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1853 return method->obj_field(name_offset); 1854 } 1855 1856 void java_lang_reflect_Method::set_name(oop method, oop value) { 1857 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1858 method->obj_field_put(name_offset, value); 1859 } 1860 1861 oop java_lang_reflect_Method::return_type(oop method) { 1862 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1863 return method->obj_field(returnType_offset); 1864 } 1865 1866 void java_lang_reflect_Method::set_return_type(oop method, oop value) { 1867 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1868 method->obj_field_put(returnType_offset, value); 1869 } 1870 1871 oop java_lang_reflect_Method::parameter_types(oop method) { 1872 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1873 return method->obj_field(parameterTypes_offset); 1874 } 1875 1876 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) { 1877 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1878 method->obj_field_put(parameterTypes_offset, value); 1879 } 1880 1881 oop java_lang_reflect_Method::exception_types(oop method) { 1882 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1883 return method->obj_field(exceptionTypes_offset); 1884 } 1885 1886 void java_lang_reflect_Method::set_exception_types(oop method, oop value) { 1887 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1888 method->obj_field_put(exceptionTypes_offset, value); 1889 } 1890 1891 int java_lang_reflect_Method::modifiers(oop method) { 1892 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1893 return method->int_field(modifiers_offset); 1894 } 1895 1896 void java_lang_reflect_Method::set_modifiers(oop method, int value) { 1897 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1898 method->int_field_put(modifiers_offset, value); 1899 } 1900 1901 bool java_lang_reflect_Method::has_signature_field() { 1902 return (signature_offset >= 0); 1903 } 1904 1905 oop java_lang_reflect_Method::signature(oop method) { 1906 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1907 assert(has_signature_field(), "signature field must be present"); 1908 return method->obj_field(signature_offset); 1909 } 1910 1911 void java_lang_reflect_Method::set_signature(oop method, oop value) { 1912 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1913 assert(has_signature_field(), "signature field must be present"); 1914 method->obj_field_put(signature_offset, value); 1915 } 1916 1917 bool java_lang_reflect_Method::has_annotations_field() { 1918 return (annotations_offset >= 0); 1919 } 1920 1921 oop java_lang_reflect_Method::annotations(oop method) { 1922 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1923 assert(has_annotations_field(), "annotations field must be present"); 1924 return method->obj_field(annotations_offset); 1925 } 1926 1927 void java_lang_reflect_Method::set_annotations(oop method, oop value) { 1928 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1929 assert(has_annotations_field(), "annotations field must be present"); 1930 method->obj_field_put(annotations_offset, value); 1931 } 1932 1933 bool java_lang_reflect_Method::has_parameter_annotations_field() { 1934 return (parameter_annotations_offset >= 0); 1935 } 1936 1937 oop java_lang_reflect_Method::parameter_annotations(oop method) { 1938 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1939 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); 1940 return method->obj_field(parameter_annotations_offset); 1941 } 1942 1943 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) { 1944 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1945 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); 1946 method->obj_field_put(parameter_annotations_offset, value); 1947 } 1948 1949 bool java_lang_reflect_Method::has_annotation_default_field() { 1950 return (annotation_default_offset >= 0); 1951 } 1952 1953 oop java_lang_reflect_Method::annotation_default(oop method) { 1954 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1955 assert(has_annotation_default_field(), "annotation default field must be present"); 1956 return method->obj_field(annotation_default_offset); 1957 } 1958 1959 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) { 1960 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1961 assert(has_annotation_default_field(), "annotation default field must be present"); 1962 method->obj_field_put(annotation_default_offset, value); 1963 } 1964 1965 void java_lang_reflect_Constructor::compute_offsets() { 1966 Klass* k = SystemDictionary::reflect_Constructor_klass(); 1967 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); 1968 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); 1969 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); 1970 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); 1971 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); 1972 // The generic signature and annotations fields are only present in 1.5 1973 signature_offset = -1; 1974 annotations_offset = -1; 1975 parameter_annotations_offset = -1; 1976 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); 1977 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); 1978 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); 1979 } 1980 1981 Handle java_lang_reflect_Constructor::create(TRAPS) { 1982 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1983 Symbol* name = vmSymbols::java_lang_reflect_Constructor(); 1984 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); 1985 instanceKlassHandle klass (THREAD, k); 1986 // Ensure it is initialized 1987 klass->initialize(CHECK_NH); 1988 return klass->allocate_instance_handle(CHECK_NH); 1989 } 1990 1991 oop java_lang_reflect_Constructor::clazz(oop reflect) { 1992 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1993 return reflect->obj_field(clazz_offset); 1994 } 1995 1996 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) { 1997 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1998 reflect->obj_field_put(clazz_offset, value); 1999 } 2000 2001 oop java_lang_reflect_Constructor::parameter_types(oop constructor) { 2002 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2003 return constructor->obj_field(parameterTypes_offset); 2004 } 2005 2006 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) { 2007 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2008 constructor->obj_field_put(parameterTypes_offset, value); 2009 } 2010 2011 oop java_lang_reflect_Constructor::exception_types(oop constructor) { 2012 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2013 return constructor->obj_field(exceptionTypes_offset); 2014 } 2015 2016 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) { 2017 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2018 constructor->obj_field_put(exceptionTypes_offset, value); 2019 } 2020 2021 int java_lang_reflect_Constructor::slot(oop reflect) { 2022 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2023 return reflect->int_field(slot_offset); 2024 } 2025 2026 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) { 2027 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2028 reflect->int_field_put(slot_offset, value); 2029 } 2030 2031 int java_lang_reflect_Constructor::modifiers(oop constructor) { 2032 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2033 return constructor->int_field(modifiers_offset); 2034 } 2035 2036 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) { 2037 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2038 constructor->int_field_put(modifiers_offset, value); 2039 } 2040 2041 bool java_lang_reflect_Constructor::has_signature_field() { 2042 return (signature_offset >= 0); 2043 } 2044 2045 oop java_lang_reflect_Constructor::signature(oop constructor) { 2046 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2047 assert(has_signature_field(), "signature field must be present"); 2048 return constructor->obj_field(signature_offset); 2049 } 2050 2051 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) { 2052 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2053 assert(has_signature_field(), "signature field must be present"); 2054 constructor->obj_field_put(signature_offset, value); 2055 } 2056 2057 bool java_lang_reflect_Constructor::has_annotations_field() { 2058 return (annotations_offset >= 0); 2059 } 2060 2061 oop java_lang_reflect_Constructor::annotations(oop constructor) { 2062 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2063 assert(has_annotations_field(), "annotations field must be present"); 2064 return constructor->obj_field(annotations_offset); 2065 } 2066 2067 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) { 2068 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2069 assert(has_annotations_field(), "annotations field must be present"); 2070 constructor->obj_field_put(annotations_offset, value); 2071 } 2072 2073 bool java_lang_reflect_Constructor::has_parameter_annotations_field() { 2074 return (parameter_annotations_offset >= 0); 2075 } 2076 2077 oop java_lang_reflect_Constructor::parameter_annotations(oop method) { 2078 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2079 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); 2080 return method->obj_field(parameter_annotations_offset); 2081 } 2082 2083 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) { 2084 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2085 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); 2086 method->obj_field_put(parameter_annotations_offset, value); 2087 } 2088 2089 void java_lang_reflect_Field::compute_offsets() { 2090 Klass* k = SystemDictionary::reflect_Field_klass(); 2091 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); 2092 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); 2093 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature()); 2094 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); 2095 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); 2096 // The generic signature and annotations fields are only present in 1.5 2097 signature_offset = -1; 2098 annotations_offset = -1; 2099 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); 2100 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); 2101 } 2102 2103 Handle java_lang_reflect_Field::create(TRAPS) { 2104 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2105 Symbol* name = vmSymbols::java_lang_reflect_Field(); 2106 Klass* k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); 2107 instanceKlassHandle klass (THREAD, k); 2108 // Ensure it is initialized 2109 klass->initialize(CHECK_NH); 2110 return klass->allocate_instance_handle(CHECK_NH); 2111 } 2112 2113 oop java_lang_reflect_Field::clazz(oop reflect) { 2114 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2115 return reflect->obj_field(clazz_offset); 2116 } 2117 2118 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) { 2119 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2120 reflect->obj_field_put(clazz_offset, value); 2121 } 2122 2123 oop java_lang_reflect_Field::name(oop field) { 2124 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2125 return field->obj_field(name_offset); 2126 } 2127 2128 void java_lang_reflect_Field::set_name(oop field, oop value) { 2129 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2130 field->obj_field_put(name_offset, value); 2131 } 2132 2133 oop java_lang_reflect_Field::type(oop field) { 2134 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2135 return field->obj_field(type_offset); 2136 } 2137 2138 void java_lang_reflect_Field::set_type(oop field, oop value) { 2139 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2140 field->obj_field_put(type_offset, value); 2141 } 2142 2143 int java_lang_reflect_Field::slot(oop reflect) { 2144 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2145 return reflect->int_field(slot_offset); 2146 } 2147 2148 void java_lang_reflect_Field::set_slot(oop reflect, int value) { 2149 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2150 reflect->int_field_put(slot_offset, value); 2151 } 2152 2153 int java_lang_reflect_Field::modifiers(oop field) { 2154 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2155 return field->int_field(modifiers_offset); 2156 } 2157 2158 void java_lang_reflect_Field::set_modifiers(oop field, int value) { 2159 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2160 field->int_field_put(modifiers_offset, value); 2161 } 2162 2163 bool java_lang_reflect_Field::has_signature_field() { 2164 return (signature_offset >= 0); 2165 } 2166 2167 oop java_lang_reflect_Field::signature(oop field) { 2168 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2169 assert(has_signature_field(), "signature field must be present"); 2170 return field->obj_field(signature_offset); 2171 } 2172 2173 void java_lang_reflect_Field::set_signature(oop field, oop value) { 2174 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2175 assert(has_signature_field(), "signature field must be present"); 2176 field->obj_field_put(signature_offset, value); 2177 } 2178 2179 bool java_lang_reflect_Field::has_annotations_field() { 2180 return (annotations_offset >= 0); 2181 } 2182 2183 oop java_lang_reflect_Field::annotations(oop field) { 2184 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2185 assert(has_annotations_field(), "annotations field must be present"); 2186 return field->obj_field(annotations_offset); 2187 } 2188 2189 void java_lang_reflect_Field::set_annotations(oop field, oop value) { 2190 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2191 assert(has_annotations_field(), "annotations field must be present"); 2192 field->obj_field_put(annotations_offset, value); 2193 } 2194 2195 2196 void sun_reflect_ConstantPool::compute_offsets() { 2197 Klass* k = SystemDictionary::reflect_ConstantPool_klass(); 2198 // This null test can be removed post beta 2199 if (k != NULL) { 2200 // The field is called ConstantPool* in the sun.reflect.ConstantPool class. 2201 compute_offset(_oop_offset, k, vmSymbols::ConstantPool_name(), vmSymbols::object_signature()); 2202 } 2203 } 2204 2205 2206 Handle sun_reflect_ConstantPool::create(TRAPS) { 2207 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2208 Klass* k = SystemDictionary::reflect_ConstantPool_klass(); 2209 instanceKlassHandle klass (THREAD, k); 2210 // Ensure it is initialized 2211 klass->initialize(CHECK_NH); 2212 return klass->allocate_instance_handle(CHECK_NH); 2213 } 2214 2215 2216 void sun_reflect_ConstantPool::set_cp(oop reflect, ConstantPool* value) { 2217 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2218 oop mirror = value->pool_holder()->java_mirror(); 2219 // Save the mirror to get back the constant pool. 2220 reflect->obj_field_put(_oop_offset, mirror); 2221 } 2222 2223 ConstantPool* sun_reflect_ConstantPool::get_cp(oop reflect) { 2224 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2225 2226 oop mirror = reflect->obj_field(_oop_offset); 2227 Klass* k = java_lang_Class::as_Klass(mirror); 2228 assert(k->oop_is_instance(), "Must be"); 2229 2230 // Get the constant pool back from the klass. Since class redefinition 2231 // merges the new constant pool into the old, this is essentially the 2232 // same constant pool as the original. If constant pool merging is 2233 // no longer done in the future, this will have to change to save 2234 // the original. 2235 return InstanceKlass::cast(k)->constants(); 2236 } 2237 2238 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() { 2239 Klass* k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(); 2240 // This null test can be removed post beta 2241 if (k != NULL) { 2242 compute_offset(_base_offset, k, 2243 vmSymbols::base_name(), vmSymbols::object_signature()); 2244 } 2245 } 2246 2247 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) { 2248 Klass* k = SystemDictionary::box_klass(type); 2249 if (k == NULL) return NULL; 2250 instanceKlassHandle h (THREAD, k); 2251 if (!h->is_initialized()) h->initialize(CHECK_0); 2252 return h->allocate_instance(THREAD); 2253 } 2254 2255 2256 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) { 2257 oop box = initialize_and_allocate(type, CHECK_0); 2258 if (box == NULL) return NULL; 2259 switch (type) { 2260 case T_BOOLEAN: 2261 box->bool_field_put(value_offset, value->z); 2262 break; 2263 case T_CHAR: 2264 box->char_field_put(value_offset, value->c); 2265 break; 2266 case T_FLOAT: 2267 box->float_field_put(value_offset, value->f); 2268 break; 2269 case T_DOUBLE: 2270 box->double_field_put(long_value_offset, value->d); 2271 break; 2272 case T_BYTE: 2273 box->byte_field_put(value_offset, value->b); 2274 break; 2275 case T_SHORT: 2276 box->short_field_put(value_offset, value->s); 2277 break; 2278 case T_INT: 2279 box->int_field_put(value_offset, value->i); 2280 break; 2281 case T_LONG: 2282 box->long_field_put(long_value_offset, value->j); 2283 break; 2284 default: 2285 return NULL; 2286 } 2287 return box; 2288 } 2289 2290 2291 BasicType java_lang_boxing_object::basic_type(oop box) { 2292 if (box == NULL) return T_ILLEGAL; 2293 BasicType type = SystemDictionary::box_klass_type(box->klass()); 2294 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt 2295 return T_ILLEGAL; 2296 return type; 2297 } 2298 2299 2300 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) { 2301 BasicType type = SystemDictionary::box_klass_type(box->klass()); 2302 switch (type) { 2303 case T_BOOLEAN: 2304 value->z = box->bool_field(value_offset); 2305 break; 2306 case T_CHAR: 2307 value->c = box->char_field(value_offset); 2308 break; 2309 case T_FLOAT: 2310 value->f = box->float_field(value_offset); 2311 break; 2312 case T_DOUBLE: 2313 value->d = box->double_field(long_value_offset); 2314 break; 2315 case T_BYTE: 2316 value->b = box->byte_field(value_offset); 2317 break; 2318 case T_SHORT: 2319 value->s = box->short_field(value_offset); 2320 break; 2321 case T_INT: 2322 value->i = box->int_field(value_offset); 2323 break; 2324 case T_LONG: 2325 value->j = box->long_field(long_value_offset); 2326 break; 2327 default: 2328 return T_ILLEGAL; 2329 } // end switch 2330 return type; 2331 } 2332 2333 2334 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) { 2335 BasicType type = SystemDictionary::box_klass_type(box->klass()); 2336 switch (type) { 2337 case T_BOOLEAN: 2338 box->bool_field_put(value_offset, value->z); 2339 break; 2340 case T_CHAR: 2341 box->char_field_put(value_offset, value->c); 2342 break; 2343 case T_FLOAT: 2344 box->float_field_put(value_offset, value->f); 2345 break; 2346 case T_DOUBLE: 2347 box->double_field_put(long_value_offset, value->d); 2348 break; 2349 case T_BYTE: 2350 box->byte_field_put(value_offset, value->b); 2351 break; 2352 case T_SHORT: 2353 box->short_field_put(value_offset, value->s); 2354 break; 2355 case T_INT: 2356 box->int_field_put(value_offset, value->i); 2357 break; 2358 case T_LONG: 2359 box->long_field_put(long_value_offset, value->j); 2360 break; 2361 default: 2362 return T_ILLEGAL; 2363 } // end switch 2364 return type; 2365 } 2366 2367 2368 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) { 2369 switch (type) { 2370 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break; 2371 case T_CHAR: st->print("%d", value->c); break; 2372 case T_BYTE: st->print("%d", value->b); break; 2373 case T_SHORT: st->print("%d", value->s); break; 2374 case T_INT: st->print("%d", value->i); break; 2375 case T_LONG: st->print(INT64_FORMAT, value->j); break; 2376 case T_FLOAT: st->print("%f", value->f); break; 2377 case T_DOUBLE: st->print("%lf", value->d); break; 2378 default: st->print("type %d?", type); break; 2379 } 2380 } 2381 2382 2383 // Support for java_lang_ref_Reference 2384 HeapWord *java_lang_ref_Reference::pending_list_lock_addr() { 2385 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass()); 2386 address addr = ik->static_field_addr(static_lock_offset); 2387 return (HeapWord*) addr; 2388 } 2389 2390 oop java_lang_ref_Reference::pending_list_lock() { 2391 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass()); 2392 address addr = ik->static_field_addr(static_lock_offset); 2393 if (UseCompressedOops) { 2394 return oopDesc::load_decode_heap_oop((narrowOop *)addr); 2395 } else { 2396 return oopDesc::load_decode_heap_oop((oop*)addr); 2397 } 2398 } 2399 2400 HeapWord *java_lang_ref_Reference::pending_list_addr() { 2401 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::Reference_klass()); 2402 address addr = ik->static_field_addr(static_pending_offset); 2403 // XXX This might not be HeapWord aligned, almost rather be char *. 2404 return (HeapWord*)addr; 2405 } 2406 2407 oop java_lang_ref_Reference::pending_list() { 2408 char *addr = (char *)pending_list_addr(); 2409 if (UseCompressedOops) { 2410 return oopDesc::load_decode_heap_oop((narrowOop *)addr); 2411 } else { 2412 return oopDesc::load_decode_heap_oop((oop*)addr); 2413 } 2414 } 2415 2416 2417 // Support for java_lang_ref_SoftReference 2418 2419 jlong java_lang_ref_SoftReference::timestamp(oop ref) { 2420 return ref->long_field(timestamp_offset); 2421 } 2422 2423 jlong java_lang_ref_SoftReference::clock() { 2424 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass()); 2425 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset); 2426 return *offset; 2427 } 2428 2429 void java_lang_ref_SoftReference::set_clock(jlong value) { 2430 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::SoftReference_klass()); 2431 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset); 2432 *offset = value; 2433 } 2434 2435 2436 // Support for java_lang_invoke_MethodHandle 2437 2438 int java_lang_invoke_MethodHandle::_type_offset; 2439 int java_lang_invoke_MethodHandle::_form_offset; 2440 2441 int java_lang_invoke_MemberName::_clazz_offset; 2442 int java_lang_invoke_MemberName::_name_offset; 2443 int java_lang_invoke_MemberName::_type_offset; 2444 int java_lang_invoke_MemberName::_flags_offset; 2445 int java_lang_invoke_MemberName::_vmtarget_offset; 2446 int java_lang_invoke_MemberName::_vmloader_offset; 2447 int java_lang_invoke_MemberName::_vmindex_offset; 2448 2449 int java_lang_invoke_LambdaForm::_vmentry_offset; 2450 2451 void java_lang_invoke_MethodHandle::compute_offsets() { 2452 Klass* klass_oop = SystemDictionary::MethodHandle_klass(); 2453 if (klass_oop != NULL && EnableInvokeDynamic) { 2454 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature()); 2455 compute_optional_offset(_form_offset, klass_oop, vmSymbols::form_name(), vmSymbols::java_lang_invoke_LambdaForm_signature()); 2456 if (_form_offset == 0) { 2457 EnableInvokeDynamic = false; 2458 } 2459 } 2460 } 2461 2462 void java_lang_invoke_MemberName::compute_offsets() { 2463 Klass* klass_oop = SystemDictionary::MemberName_klass(); 2464 if (klass_oop != NULL && EnableInvokeDynamic) { 2465 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature()); 2466 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature()); 2467 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature()); 2468 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature()); 2469 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 2470 } 2471 } 2472 2473 void java_lang_invoke_LambdaForm::compute_offsets() { 2474 Klass* klass_oop = SystemDictionary::LambdaForm_klass(); 2475 if (klass_oop != NULL && EnableInvokeDynamic) { 2476 compute_offset(_vmentry_offset, klass_oop, vmSymbols::vmentry_name(), vmSymbols::java_lang_invoke_MemberName_signature()); 2477 } 2478 } 2479 2480 oop java_lang_invoke_MethodHandle::type(oop mh) { 2481 return mh->obj_field(_type_offset); 2482 } 2483 2484 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) { 2485 mh->obj_field_put(_type_offset, mtype); 2486 } 2487 2488 oop java_lang_invoke_MethodHandle::form(oop mh) { 2489 assert(_form_offset != 0, ""); 2490 return mh->obj_field(_form_offset); 2491 } 2492 2493 void java_lang_invoke_MethodHandle::set_form(oop mh, oop lform) { 2494 assert(_form_offset != 0, ""); 2495 mh->obj_field_put(_form_offset, lform); 2496 } 2497 2498 /// MemberName accessors 2499 2500 oop java_lang_invoke_MemberName::clazz(oop mname) { 2501 assert(is_instance(mname), "wrong type"); 2502 return mname->obj_field(_clazz_offset); 2503 } 2504 2505 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) { 2506 assert(is_instance(mname), "wrong type"); 2507 mname->obj_field_put(_clazz_offset, clazz); 2508 } 2509 2510 oop java_lang_invoke_MemberName::name(oop mname) { 2511 assert(is_instance(mname), "wrong type"); 2512 return mname->obj_field(_name_offset); 2513 } 2514 2515 void java_lang_invoke_MemberName::set_name(oop mname, oop name) { 2516 assert(is_instance(mname), "wrong type"); 2517 mname->obj_field_put(_name_offset, name); 2518 } 2519 2520 oop java_lang_invoke_MemberName::type(oop mname) { 2521 assert(is_instance(mname), "wrong type"); 2522 return mname->obj_field(_type_offset); 2523 } 2524 2525 void java_lang_invoke_MemberName::set_type(oop mname, oop type) { 2526 assert(is_instance(mname), "wrong type"); 2527 mname->obj_field_put(_type_offset, type); 2528 } 2529 2530 int java_lang_invoke_MemberName::flags(oop mname) { 2531 assert(is_instance(mname), "wrong type"); 2532 return mname->int_field(_flags_offset); 2533 } 2534 2535 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) { 2536 assert(is_instance(mname), "wrong type"); 2537 mname->int_field_put(_flags_offset, flags); 2538 } 2539 2540 Metadata* java_lang_invoke_MemberName::vmtarget(oop mname) { 2541 assert(is_instance(mname), "wrong type"); 2542 return (Metadata*)mname->address_field(_vmtarget_offset); 2543 } 2544 2545 void java_lang_invoke_MemberName::set_vmtarget(oop mname, Metadata* ref) { 2546 assert(is_instance(mname), "wrong type"); 2547 // check the type of the vmtarget 2548 oop dependency = NULL; 2549 if (ref != NULL) { 2550 switch (flags(mname) & (MN_IS_METHOD | 2551 MN_IS_CONSTRUCTOR | 2552 MN_IS_FIELD)) { 2553 case MN_IS_METHOD: 2554 case MN_IS_CONSTRUCTOR: 2555 assert(ref->is_method(), "should be a method"); 2556 dependency = ((Method*)ref)->method_holder()->java_mirror(); 2557 break; 2558 case MN_IS_FIELD: 2559 assert(ref->is_klass(), "should be a class"); 2560 dependency = ((Klass*)ref)->java_mirror(); 2561 break; 2562 default: 2563 ShouldNotReachHere(); 2564 } 2565 } 2566 mname->address_field_put(_vmtarget_offset, (address)ref); 2567 // Add a reference to the loader (actually mirror because anonymous classes will not have 2568 // distinct loaders) to ensure the metadata is kept alive 2569 // This mirror may be different than the one in clazz field. 2570 mname->obj_field_put(_vmloader_offset, dependency); 2571 } 2572 2573 intptr_t java_lang_invoke_MemberName::vmindex(oop mname) { 2574 assert(is_instance(mname), "wrong type"); 2575 return (intptr_t) mname->address_field(_vmindex_offset); 2576 } 2577 2578 void java_lang_invoke_MemberName::set_vmindex(oop mname, intptr_t index) { 2579 assert(is_instance(mname), "wrong type"); 2580 mname->address_field_put(_vmindex_offset, (address) index); 2581 } 2582 2583 oop java_lang_invoke_LambdaForm::vmentry(oop lform) { 2584 assert(is_instance(lform), "wrong type"); 2585 return lform->obj_field(_vmentry_offset); 2586 } 2587 2588 2589 // Support for java_lang_invoke_MethodType 2590 2591 int java_lang_invoke_MethodType::_rtype_offset; 2592 int java_lang_invoke_MethodType::_ptypes_offset; 2593 2594 void java_lang_invoke_MethodType::compute_offsets() { 2595 Klass* k = SystemDictionary::MethodType_klass(); 2596 if (k != NULL) { 2597 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature()); 2598 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature()); 2599 } 2600 } 2601 2602 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) { 2603 st->print("("); 2604 objArrayOop pts = ptypes(mt); 2605 for (int i = 0, limit = pts->length(); i < limit; i++) { 2606 java_lang_Class::print_signature(pts->obj_at(i), st); 2607 } 2608 st->print(")"); 2609 java_lang_Class::print_signature(rtype(mt), st); 2610 } 2611 2612 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) { 2613 ResourceMark rm; 2614 stringStream buffer(128); 2615 print_signature(mt, &buffer); 2616 const char* sigstr = buffer.base(); 2617 int siglen = (int) buffer.size(); 2618 Symbol *name; 2619 if (!intern_if_not_found) { 2620 name = SymbolTable::probe(sigstr, siglen); 2621 } else { 2622 name = SymbolTable::new_symbol(sigstr, siglen, THREAD); 2623 } 2624 return name; 2625 } 2626 2627 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) { 2628 if (mt1 == mt2) 2629 return true; 2630 if (rtype(mt1) != rtype(mt2)) 2631 return false; 2632 if (ptype_count(mt1) != ptype_count(mt2)) 2633 return false; 2634 for (int i = ptype_count(mt1) - 1; i >= 0; i--) { 2635 if (ptype(mt1, i) != ptype(mt2, i)) 2636 return false; 2637 } 2638 return true; 2639 } 2640 2641 oop java_lang_invoke_MethodType::rtype(oop mt) { 2642 assert(is_instance(mt), "must be a MethodType"); 2643 return mt->obj_field(_rtype_offset); 2644 } 2645 2646 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) { 2647 assert(is_instance(mt), "must be a MethodType"); 2648 return (objArrayOop) mt->obj_field(_ptypes_offset); 2649 } 2650 2651 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) { 2652 return ptypes(mt)->obj_at(idx); 2653 } 2654 2655 int java_lang_invoke_MethodType::ptype_count(oop mt) { 2656 return ptypes(mt)->length(); 2657 } 2658 2659 int java_lang_invoke_MethodType::ptype_slot_count(oop mt) { 2660 objArrayOop pts = ptypes(mt); 2661 int count = pts->length(); 2662 int slots = 0; 2663 for (int i = 0; i < count; i++) { 2664 BasicType bt = java_lang_Class::as_BasicType(pts->obj_at(i)); 2665 slots += type2size[bt]; 2666 } 2667 return slots; 2668 } 2669 2670 int java_lang_invoke_MethodType::rtype_slot_count(oop mt) { 2671 BasicType bt = java_lang_Class::as_BasicType(rtype(mt)); 2672 return type2size[bt]; 2673 } 2674 2675 2676 // Support for java_lang_invoke_CallSite 2677 2678 int java_lang_invoke_CallSite::_target_offset; 2679 2680 void java_lang_invoke_CallSite::compute_offsets() { 2681 if (!EnableInvokeDynamic) return; 2682 Klass* k = SystemDictionary::CallSite_klass(); 2683 if (k != NULL) { 2684 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature()); 2685 } 2686 } 2687 2688 2689 // Support for java_security_AccessControlContext 2690 2691 int java_security_AccessControlContext::_context_offset = 0; 2692 int java_security_AccessControlContext::_privilegedContext_offset = 0; 2693 int java_security_AccessControlContext::_isPrivileged_offset = 0; 2694 2695 void java_security_AccessControlContext::compute_offsets() { 2696 assert(_isPrivileged_offset == 0, "offsets should be initialized only once"); 2697 fieldDescriptor fd; 2698 InstanceKlass* ik = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass()); 2699 2700 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) { 2701 fatal("Invalid layout of java.security.AccessControlContext"); 2702 } 2703 _context_offset = fd.offset(); 2704 2705 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) { 2706 fatal("Invalid layout of java.security.AccessControlContext"); 2707 } 2708 _privilegedContext_offset = fd.offset(); 2709 2710 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) { 2711 fatal("Invalid layout of java.security.AccessControlContext"); 2712 } 2713 _isPrivileged_offset = fd.offset(); 2714 } 2715 2716 2717 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) { 2718 assert(_isPrivileged_offset != 0, "offsets should have been initialized"); 2719 // Ensure klass is initialized 2720 InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0); 2721 // Allocate result 2722 oop result = InstanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0); 2723 // Fill in values 2724 result->obj_field_put(_context_offset, context()); 2725 result->obj_field_put(_privilegedContext_offset, privileged_context()); 2726 result->bool_field_put(_isPrivileged_offset, isPrivileged); 2727 return result; 2728 } 2729 2730 2731 // Support for java_lang_ClassLoader 2732 2733 bool java_lang_ClassLoader::offsets_computed = false; 2734 int java_lang_ClassLoader::_loader_data_offset = -1; 2735 int java_lang_ClassLoader::parallelCapable_offset = -1; 2736 2737 ClassLoaderData** java_lang_ClassLoader::loader_data_addr(oop loader) { 2738 assert(loader != NULL && loader->is_oop(), "loader must be oop"); 2739 return (ClassLoaderData**) loader->address_field_addr(_loader_data_offset); 2740 } 2741 2742 ClassLoaderData* java_lang_ClassLoader::loader_data(oop loader) { 2743 return *java_lang_ClassLoader::loader_data_addr(loader); 2744 } 2745 2746 void java_lang_ClassLoader::compute_offsets() { 2747 assert(!offsets_computed, "offsets should be initialized only once"); 2748 offsets_computed = true; 2749 2750 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7, 2751 Klass* k1 = SystemDictionary::ClassLoader_klass(); 2752 compute_optional_offset(parallelCapable_offset, 2753 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature()); 2754 2755 CLASSLOADER_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 2756 } 2757 2758 oop java_lang_ClassLoader::parent(oop loader) { 2759 assert(is_instance(loader), "loader must be oop"); 2760 return loader->obj_field(parent_offset); 2761 } 2762 2763 bool java_lang_ClassLoader::isAncestor(oop loader, oop cl) { 2764 assert(is_instance(loader), "loader must be oop"); 2765 assert(cl == NULL || is_instance(cl), "cl argument must be oop"); 2766 oop acl = loader; 2767 debug_only(jint loop_count = 0); 2768 // This loop taken verbatim from ClassLoader.java: 2769 do { 2770 acl = parent(acl); 2771 if (cl == acl) { 2772 return true; 2773 } 2774 assert(++loop_count > 0, "loop_count overflow"); 2775 } while (acl != NULL); 2776 return false; 2777 } 2778 2779 2780 // For class loader classes, parallelCapable defined 2781 // based on non-null field 2782 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it 2783 bool java_lang_ClassLoader::parallelCapable(oop class_loader) { 2784 if (!JDK_Version::is_gte_jdk17x_version() 2785 || parallelCapable_offset == -1) { 2786 // Default for backward compatibility is false 2787 return false; 2788 } 2789 return (class_loader->obj_field(parallelCapable_offset) != NULL); 2790 } 2791 2792 bool java_lang_ClassLoader::is_trusted_loader(oop loader) { 2793 // Fix for 4474172; see evaluation for more details 2794 loader = non_reflection_class_loader(loader); 2795 2796 oop cl = SystemDictionary::java_system_loader(); 2797 while(cl != NULL) { 2798 if (cl == loader) return true; 2799 cl = parent(cl); 2800 } 2801 return false; 2802 } 2803 2804 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) { 2805 if (loader != NULL) { 2806 // See whether this is one of the class loaders associated with 2807 // the generated bytecodes for reflection, and if so, "magically" 2808 // delegate to its parent to prevent class loading from occurring 2809 // in places where applications using reflection didn't expect it. 2810 Klass* delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass(); 2811 // This might be null in non-1.4 JDKs 2812 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) { 2813 return parent(loader); 2814 } 2815 } 2816 return loader; 2817 } 2818 2819 2820 // Support for java_lang_System 2821 int java_lang_System::in_offset_in_bytes() { 2822 return (InstanceMirrorKlass::offset_of_static_fields() + static_in_offset); 2823 } 2824 2825 2826 int java_lang_System::out_offset_in_bytes() { 2827 return (InstanceMirrorKlass::offset_of_static_fields() + static_out_offset); 2828 } 2829 2830 2831 int java_lang_System::err_offset_in_bytes() { 2832 return (InstanceMirrorKlass::offset_of_static_fields() + static_err_offset); 2833 } 2834 2835 2836 2837 int java_lang_Class::_klass_offset; 2838 int java_lang_Class::_array_klass_offset; 2839 int java_lang_Class::_resolved_constructor_offset; 2840 int java_lang_Class::_oop_size_offset; 2841 int java_lang_Class::_static_oop_field_count_offset; 2842 GrowableArray<Klass*>* java_lang_Class::_fixup_mirror_list = NULL; 2843 int java_lang_Throwable::backtrace_offset; 2844 int java_lang_Throwable::detailMessage_offset; 2845 int java_lang_Throwable::cause_offset; 2846 int java_lang_Throwable::stackTrace_offset; 2847 int java_lang_Throwable::static_unassigned_stacktrace_offset; 2848 int java_lang_reflect_AccessibleObject::override_offset; 2849 int java_lang_reflect_Method::clazz_offset; 2850 int java_lang_reflect_Method::name_offset; 2851 int java_lang_reflect_Method::returnType_offset; 2852 int java_lang_reflect_Method::parameterTypes_offset; 2853 int java_lang_reflect_Method::exceptionTypes_offset; 2854 int java_lang_reflect_Method::slot_offset; 2855 int java_lang_reflect_Method::modifiers_offset; 2856 int java_lang_reflect_Method::signature_offset; 2857 int java_lang_reflect_Method::annotations_offset; 2858 int java_lang_reflect_Method::parameter_annotations_offset; 2859 int java_lang_reflect_Method::annotation_default_offset; 2860 int java_lang_reflect_Constructor::clazz_offset; 2861 int java_lang_reflect_Constructor::parameterTypes_offset; 2862 int java_lang_reflect_Constructor::exceptionTypes_offset; 2863 int java_lang_reflect_Constructor::slot_offset; 2864 int java_lang_reflect_Constructor::modifiers_offset; 2865 int java_lang_reflect_Constructor::signature_offset; 2866 int java_lang_reflect_Constructor::annotations_offset; 2867 int java_lang_reflect_Constructor::parameter_annotations_offset; 2868 int java_lang_reflect_Field::clazz_offset; 2869 int java_lang_reflect_Field::name_offset; 2870 int java_lang_reflect_Field::type_offset; 2871 int java_lang_reflect_Field::slot_offset; 2872 int java_lang_reflect_Field::modifiers_offset; 2873 int java_lang_reflect_Field::signature_offset; 2874 int java_lang_reflect_Field::annotations_offset; 2875 int java_lang_boxing_object::value_offset; 2876 int java_lang_boxing_object::long_value_offset; 2877 int java_lang_ref_Reference::referent_offset; 2878 int java_lang_ref_Reference::queue_offset; 2879 int java_lang_ref_Reference::next_offset; 2880 int java_lang_ref_Reference::discovered_offset; 2881 int java_lang_ref_Reference::static_lock_offset; 2882 int java_lang_ref_Reference::static_pending_offset; 2883 int java_lang_ref_Reference::number_of_fake_oop_fields; 2884 int java_lang_ref_SoftReference::timestamp_offset; 2885 int java_lang_ref_SoftReference::static_clock_offset; 2886 int java_lang_ClassLoader::parent_offset; 2887 int java_lang_System::static_in_offset; 2888 int java_lang_System::static_out_offset; 2889 int java_lang_System::static_err_offset; 2890 int java_lang_StackTraceElement::declaringClass_offset; 2891 int java_lang_StackTraceElement::methodName_offset; 2892 int java_lang_StackTraceElement::fileName_offset; 2893 int java_lang_StackTraceElement::lineNumber_offset; 2894 int java_lang_AssertionStatusDirectives::classes_offset; 2895 int java_lang_AssertionStatusDirectives::classEnabled_offset; 2896 int java_lang_AssertionStatusDirectives::packages_offset; 2897 int java_lang_AssertionStatusDirectives::packageEnabled_offset; 2898 int java_lang_AssertionStatusDirectives::deflt_offset; 2899 int java_nio_Buffer::_limit_offset; 2900 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0; 2901 int sun_reflect_ConstantPool::_oop_offset; 2902 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset; 2903 2904 2905 // Support for java_lang_StackTraceElement 2906 2907 void java_lang_StackTraceElement::set_fileName(oop element, oop value) { 2908 element->obj_field_put(fileName_offset, value); 2909 } 2910 2911 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) { 2912 element->obj_field_put(declaringClass_offset, value); 2913 } 2914 2915 void java_lang_StackTraceElement::set_methodName(oop element, oop value) { 2916 element->obj_field_put(methodName_offset, value); 2917 } 2918 2919 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) { 2920 element->int_field_put(lineNumber_offset, value); 2921 } 2922 2923 2924 // Support for java Assertions - java_lang_AssertionStatusDirectives. 2925 2926 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) { 2927 o->obj_field_put(classes_offset, val); 2928 } 2929 2930 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) { 2931 o->obj_field_put(classEnabled_offset, val); 2932 } 2933 2934 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) { 2935 o->obj_field_put(packages_offset, val); 2936 } 2937 2938 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) { 2939 o->obj_field_put(packageEnabled_offset, val); 2940 } 2941 2942 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) { 2943 o->bool_field_put(deflt_offset, val); 2944 } 2945 2946 2947 // Support for intrinsification of java.nio.Buffer.checkIndex 2948 int java_nio_Buffer::limit_offset() { 2949 return _limit_offset; 2950 } 2951 2952 2953 void java_nio_Buffer::compute_offsets() { 2954 Klass* k = SystemDictionary::nio_Buffer_klass(); 2955 assert(k != NULL, "must be loaded in 1.4+"); 2956 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature()); 2957 } 2958 2959 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) { 2960 if (_owner_offset != 0) return; 2961 2962 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later"); 2963 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK); 2964 Klass* k = SystemDictionary::abstract_ownable_synchronizer_klass(); 2965 compute_offset(_owner_offset, k, 2966 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature()); 2967 } 2968 2969 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) { 2970 assert(_owner_offset != 0, "Must be initialized"); 2971 return obj->obj_field(_owner_offset); 2972 } 2973 2974 // Compute hard-coded offsets 2975 // Invoked before SystemDictionary::initialize, so pre-loaded classes 2976 // are not available to determine the offset_of_static_fields. 2977 void JavaClasses::compute_hard_coded_offsets() { 2978 const int x = heapOopSize; 2979 const int header = instanceOopDesc::base_offset_in_bytes(); 2980 2981 // Throwable Class 2982 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header; 2983 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header; 2984 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header; 2985 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header; 2986 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x; 2987 2988 // java_lang_boxing_object 2989 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header; 2990 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong); 2991 2992 // java_lang_ref_Reference: 2993 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header; 2994 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header; 2995 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header; 2996 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header; 2997 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x; 2998 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x; 2999 // Artificial fields for java_lang_ref_Reference 3000 // The first field is for the discovered field added in 1.4 3001 java_lang_ref_Reference::number_of_fake_oop_fields = 1; 3002 3003 // java_lang_ref_SoftReference Class 3004 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong); 3005 // Don't multiply static fields because they are always in wordSize units 3006 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x; 3007 3008 // java_lang_ClassLoader 3009 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header; 3010 3011 // java_lang_System 3012 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x; 3013 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x; 3014 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x; 3015 3016 // java_lang_StackTraceElement 3017 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header; 3018 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header; 3019 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header; 3020 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header; 3021 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header; 3022 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header; 3023 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header; 3024 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header; 3025 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header; 3026 3027 } 3028 3029 3030 // Compute non-hard-coded field offsets of all the classes in this file 3031 void JavaClasses::compute_offsets() { 3032 // java_lang_Class::compute_offsets was called earlier in bootstrap 3033 java_lang_ClassLoader::compute_offsets(); 3034 java_lang_Thread::compute_offsets(); 3035 java_lang_ThreadGroup::compute_offsets(); 3036 if (EnableInvokeDynamic) { 3037 java_lang_invoke_MethodHandle::compute_offsets(); 3038 java_lang_invoke_MemberName::compute_offsets(); 3039 java_lang_invoke_LambdaForm::compute_offsets(); 3040 java_lang_invoke_MethodType::compute_offsets(); 3041 java_lang_invoke_CallSite::compute_offsets(); 3042 } 3043 java_security_AccessControlContext::compute_offsets(); 3044 // Initialize reflection classes. The layouts of these classes 3045 // changed with the new reflection implementation in JDK 1.4, and 3046 // since the Universe doesn't know what JDK version it is until this 3047 // point we defer computation of these offsets until now. 3048 java_lang_reflect_AccessibleObject::compute_offsets(); 3049 java_lang_reflect_Method::compute_offsets(); 3050 java_lang_reflect_Constructor::compute_offsets(); 3051 java_lang_reflect_Field::compute_offsets(); 3052 if (JDK_Version::is_gte_jdk14x_version()) { 3053 java_nio_Buffer::compute_offsets(); 3054 } 3055 if (JDK_Version::is_gte_jdk15x_version()) { 3056 sun_reflect_ConstantPool::compute_offsets(); 3057 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets(); 3058 } 3059 3060 // generated interpreter code wants to know about the offsets we just computed: 3061 AbstractAssembler::update_delayed_values(); 3062 } 3063 3064 #ifndef PRODUCT 3065 3066 // These functions exist to assert the validity of hard-coded field offsets to guard 3067 // against changes in the class files 3068 3069 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { 3070 EXCEPTION_MARK; 3071 fieldDescriptor fd; 3072 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH); 3073 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); 3074 instanceKlassHandle h_klass (THREAD, k); 3075 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH); 3076 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH); 3077 if (!h_klass->find_local_field(f_name, f_sig, &fd)) { 3078 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name); 3079 return false; 3080 } 3081 if (fd.is_static()) { 3082 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name); 3083 return false; 3084 } 3085 if (fd.offset() == hardcoded_offset ) { 3086 return true; 3087 } else { 3088 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.", 3089 klass_name, field_name, hardcoded_offset, fd.offset()); 3090 return false; 3091 } 3092 } 3093 3094 3095 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { 3096 EXCEPTION_MARK; 3097 fieldDescriptor fd; 3098 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH); 3099 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); 3100 instanceKlassHandle h_klass (THREAD, k); 3101 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH); 3102 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH); 3103 if (!h_klass->find_local_field(f_name, f_sig, &fd)) { 3104 tty->print_cr("Static field %s.%s not found", klass_name, field_name); 3105 return false; 3106 } 3107 if (!fd.is_static()) { 3108 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name); 3109 return false; 3110 } 3111 if (fd.offset() == hardcoded_offset + InstanceMirrorKlass::offset_of_static_fields()) { 3112 return true; 3113 } else { 3114 tty->print_cr("Offset of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_offset, fd.offset() - InstanceMirrorKlass::offset_of_static_fields()); 3115 return false; 3116 } 3117 } 3118 3119 3120 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) { 3121 EXCEPTION_MARK; 3122 fieldDescriptor fd; 3123 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH); 3124 Klass* k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); 3125 instanceKlassHandle h_klass (THREAD, k); 3126 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH); 3127 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH); 3128 if (!h_klass->find_local_field(f_name, f_sig, &fd)) { 3129 tty->print_cr("Static field %s.%s not found", klass_name, field_name); 3130 return false; 3131 } 3132 if (!fd.is_static() || !fd.has_initial_value()) { 3133 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name); 3134 return false; 3135 } 3136 if (!fd.initial_value_tag().is_int()) { 3137 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name); 3138 return false; 3139 } 3140 jint field_value = fd.int_initial_value(); 3141 if (field_value == hardcoded_constant) { 3142 return true; 3143 } else { 3144 tty->print_cr("Constant value of static field %s.%s is hardcoded as %d but should really be %d.", klass_name, field_name, hardcoded_constant, field_value); 3145 return false; 3146 } 3147 } 3148 3149 3150 // Check the hard-coded field offsets of all the classes in this file 3151 3152 void JavaClasses::check_offsets() { 3153 bool valid = true; 3154 HandleMark hm; 3155 3156 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ 3157 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig) 3158 3159 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ 3160 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig) 3161 3162 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ 3163 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig) 3164 3165 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \ 3166 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig) 3167 3168 // java.lang.String 3169 3170 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C"); 3171 if (java_lang_String::has_offset_field()) { 3172 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I"); 3173 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I"); 3174 } 3175 if (java_lang_String::has_hash_field()) { 3176 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I"); 3177 } 3178 3179 // java.lang.Class 3180 3181 // Fake fields 3182 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked 3183 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked 3184 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked 3185 3186 // java.lang.Throwable 3187 3188 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;"); 3189 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;"); 3190 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;"); 3191 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;"); 3192 3193 // Boxed primitive objects (java_lang_boxing_object) 3194 3195 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z"); 3196 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C"); 3197 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F"); 3198 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D"); 3199 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B"); 3200 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S"); 3201 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I"); 3202 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J"); 3203 3204 // java.lang.ClassLoader 3205 3206 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;"); 3207 3208 // java.lang.System 3209 3210 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;"); 3211 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;"); 3212 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;"); 3213 3214 // java.lang.StackTraceElement 3215 3216 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;"); 3217 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;"); 3218 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;"); 3219 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I"); 3220 3221 // java.lang.ref.Reference 3222 3223 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;"); 3224 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;"); 3225 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;"); 3226 // Fake field 3227 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;"); 3228 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;"); 3229 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;"); 3230 3231 // java.lang.ref.SoftReference 3232 3233 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J"); 3234 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J"); 3235 3236 // java.lang.AssertionStatusDirectives 3237 // 3238 // The CheckAssertionStatusDirectives boolean can be removed from here and 3239 // globals.hpp after the AssertionStatusDirectives class has been integrated 3240 // into merlin "for some time." Without it, the vm will fail with early 3241 // merlin builds. 3242 3243 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) { 3244 const char* nm = "java/lang/AssertionStatusDirectives"; 3245 const char* sig = "[Ljava/lang/String;"; 3246 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig); 3247 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z"); 3248 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig); 3249 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z"); 3250 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z"); 3251 } 3252 3253 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed"); 3254 } 3255 3256 #endif // PRODUCT 3257 3258 int InjectedField::compute_offset() { 3259 Klass* klass_oop = klass(); 3260 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) { 3261 if (!may_be_java && !fs.access_flags().is_internal()) { 3262 // Only look at injected fields 3263 continue; 3264 } 3265 if (fs.name() == name() && fs.signature() == signature()) { 3266 return fs.offset(); 3267 } 3268 } 3269 ResourceMark rm; 3270 tty->print_cr("Invalid layout of %s at %s/%s%s", InstanceKlass::cast(klass_oop)->external_name(), name()->as_C_string(), signature()->as_C_string(), may_be_java ? " (may_be_java)" : ""); 3271 #ifndef PRODUCT 3272 klass_oop->print(); 3273 tty->print_cr("all fields:"); 3274 for (AllFieldStream fs(InstanceKlass::cast(klass_oop)); !fs.done(); fs.next()) { 3275 tty->print_cr(" name: %s, sig: %s, flags: %08x", fs.name()->as_C_string(), fs.signature()->as_C_string(), fs.access_flags().as_int()); 3276 } 3277 #endif //PRODUCT 3278 fatal("Invalid layout of preloaded class"); 3279 return -1; 3280 } 3281 3282 void javaClasses_init() { 3283 JavaClasses::compute_offsets(); 3284 JavaClasses::check_offsets(); 3285 FilteredFieldsMap::initialize(); // must be done after computing offsets. 3286 }