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/klassOop.hpp" 42 #include "oops/methodOop.hpp" 43 #include "oops/symbol.hpp" 44 #include "oops/typeArrayOop.hpp" 45 #include "runtime/fieldDescriptor.hpp" 46 #include "runtime/handles.inline.hpp" 47 #include "runtime/interfaceSupport.hpp" 48 #include "runtime/java.hpp" 49 #include "runtime/javaCalls.hpp" 50 #include "runtime/safepoint.hpp" 51 #include "runtime/vframe.hpp" 52 #include "utilities/preserveException.hpp" 53 #ifdef TARGET_OS_FAMILY_linux 54 # include "thread_linux.inline.hpp" 55 #endif 56 #ifdef TARGET_OS_FAMILY_solaris 57 # include "thread_solaris.inline.hpp" 58 #endif 59 #ifdef TARGET_OS_FAMILY_windows 60 # include "thread_windows.inline.hpp" 61 #endif 62 #ifdef TARGET_OS_FAMILY_bsd 63 # include "thread_bsd.inline.hpp" 64 #endif 65 66 #define INJECTED_FIELD_COMPUTE_OFFSET(klass, name, signature, may_be_java) \ 67 klass::_##name##_offset = JavaClasses::compute_injected_offset(JavaClasses::klass##_##name##_enum); 68 69 #define DECLARE_INJECTED_FIELD(klass, name, signature, may_be_java) \ 70 { SystemDictionary::WK_KLASS_ENUM_NAME(klass), vmSymbols::VM_SYMBOL_ENUM_NAME(name##_name), vmSymbols::VM_SYMBOL_ENUM_NAME(signature), may_be_java }, 71 72 InjectedField JavaClasses::_injected_fields[] = { 73 ALL_INJECTED_FIELDS(DECLARE_INJECTED_FIELD) 74 }; 75 76 int JavaClasses::compute_injected_offset(InjectedFieldID id) { 77 return _injected_fields[id].compute_offset(); 78 } 79 80 81 InjectedField* JavaClasses::get_injected(Symbol* class_name, int* field_count) { 82 *field_count = 0; 83 84 vmSymbols::SID sid = vmSymbols::find_sid(class_name); 85 if (sid == vmSymbols::NO_SID) { 86 // Only well known classes can inject fields 87 return NULL; 88 } 89 90 int count = 0; 91 int start = -1; 92 93 #define LOOKUP_INJECTED_FIELD(klass, name, signature, may_be_java) \ 94 if (sid == vmSymbols::VM_SYMBOL_ENUM_NAME(klass)) { \ 95 count++; \ 96 if (start == -1) start = klass##_##name##_enum; \ 97 } 98 ALL_INJECTED_FIELDS(LOOKUP_INJECTED_FIELD); 99 #undef LOOKUP_INJECTED_FIELD 100 101 if (start != -1) { 102 *field_count = count; 103 return _injected_fields + start; 104 } 105 return NULL; 106 } 107 108 109 static bool find_field(instanceKlass* ik, 110 Symbol* name_symbol, Symbol* signature_symbol, 111 fieldDescriptor* fd, 112 bool allow_super = false) { 113 if (allow_super) 114 return ik->find_field(name_symbol, signature_symbol, fd) != NULL; 115 else 116 return ik->find_local_field(name_symbol, signature_symbol, fd); 117 } 118 119 // Helpful routine for computing field offsets at run time rather than hardcoding them 120 static void 121 compute_offset(int &dest_offset, 122 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol, 123 bool allow_super = false) { 124 fieldDescriptor fd; 125 instanceKlass* ik = instanceKlass::cast(klass_oop); 126 if (!find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) { 127 ResourceMark rm; 128 tty->print_cr("Invalid layout of %s at %s", ik->external_name(), name_symbol->as_C_string()); 129 fatal("Invalid layout of preloaded class"); 130 } 131 dest_offset = fd.offset(); 132 } 133 134 // Same as above but for "optional" offsets that might not be present in certain JDK versions 135 static void 136 compute_optional_offset(int& dest_offset, 137 klassOop klass_oop, Symbol* name_symbol, Symbol* signature_symbol, 138 bool allow_super = false) { 139 fieldDescriptor fd; 140 instanceKlass* ik = instanceKlass::cast(klass_oop); 141 if (find_field(ik, name_symbol, signature_symbol, &fd, allow_super)) { 142 dest_offset = fd.offset(); 143 } 144 } 145 146 147 int java_lang_String::value_offset = 0; 148 int java_lang_String::offset_offset = 0; 149 int java_lang_String::count_offset = 0; 150 int java_lang_String::hash_offset = 0; 151 152 bool java_lang_String::initialized = false; 153 154 void java_lang_String::compute_offsets() { 155 assert(!initialized, "offsets should be initialized only once"); 156 157 klassOop k = SystemDictionary::String_klass(); 158 compute_offset(value_offset, k, vmSymbols::value_name(), vmSymbols::char_array_signature()); 159 compute_optional_offset(offset_offset, k, vmSymbols::offset_name(), vmSymbols::int_signature()); 160 compute_optional_offset(count_offset, k, vmSymbols::count_name(), vmSymbols::int_signature()); 161 compute_optional_offset(hash_offset, k, vmSymbols::hash_name(), vmSymbols::int_signature()); 162 163 initialized = true; 164 } 165 166 Handle java_lang_String::basic_create(int length, bool tenured, TRAPS) { 167 assert(initialized, "Must be initialized"); 168 // Create the String object first, so there's a chance that the String 169 // and the char array it points to end up in the same cache line. 170 oop obj; 171 if (tenured) { 172 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_permanent_instance(CHECK_NH); 173 } else { 174 obj = instanceKlass::cast(SystemDictionary::String_klass())->allocate_instance(CHECK_NH); 175 } 176 177 // Create the char array. The String object must be handlized here 178 // because GC can happen as a result of the allocation attempt. 179 Handle h_obj(THREAD, obj); 180 typeArrayOop buffer; 181 if (tenured) { 182 buffer = oopFactory::new_permanent_charArray(length, CHECK_NH); 183 } else { 184 buffer = oopFactory::new_charArray(length, CHECK_NH); 185 } 186 187 // Point the String at the char array 188 obj = h_obj(); 189 set_value(obj, buffer); 190 // No need to zero the offset, allocation zero'ed the entire String object 191 assert(offset(obj) == 0, "initial String offset should be zero"); 192 //set_offset(obj, 0); 193 set_count(obj, length); 194 195 return h_obj; 196 } 197 198 Handle java_lang_String::basic_create_from_unicode(jchar* unicode, int length, bool tenured, TRAPS) { 199 Handle h_obj = basic_create(length, tenured, CHECK_NH); 200 typeArrayOop buffer = value(h_obj()); 201 for (int index = 0; index < length; index++) { 202 buffer->char_at_put(index, unicode[index]); 203 } 204 return h_obj; 205 } 206 207 Handle java_lang_String::create_from_unicode(jchar* unicode, int length, TRAPS) { 208 return basic_create_from_unicode(unicode, length, false, CHECK_NH); 209 } 210 211 Handle java_lang_String::create_tenured_from_unicode(jchar* unicode, int length, TRAPS) { 212 return basic_create_from_unicode(unicode, length, JavaObjectsInPerm, CHECK_NH); 213 } 214 215 oop java_lang_String::create_oop_from_unicode(jchar* unicode, int length, TRAPS) { 216 Handle h_obj = basic_create_from_unicode(unicode, length, false, CHECK_0); 217 return h_obj(); 218 } 219 220 Handle java_lang_String::create_from_str(const char* utf8_str, TRAPS) { 221 if (utf8_str == NULL) { 222 return Handle(); 223 } 224 int length = UTF8::unicode_length(utf8_str); 225 Handle h_obj = basic_create(length, false, CHECK_NH); 226 if (length > 0) { 227 UTF8::convert_to_unicode(utf8_str, value(h_obj())->char_at_addr(0), length); 228 } 229 return h_obj; 230 } 231 232 oop java_lang_String::create_oop_from_str(const char* utf8_str, TRAPS) { 233 Handle h_obj = create_from_str(utf8_str, CHECK_0); 234 return h_obj(); 235 } 236 237 Handle java_lang_String::create_from_symbol(Symbol* symbol, TRAPS) { 238 int length = UTF8::unicode_length((char*)symbol->bytes(), symbol->utf8_length()); 239 Handle h_obj = basic_create(length, false, CHECK_NH); 240 if (length > 0) { 241 UTF8::convert_to_unicode((char*)symbol->bytes(), value(h_obj())->char_at_addr(0), length); 242 } 243 return h_obj; 244 } 245 246 // Converts a C string to a Java String based on current encoding 247 Handle java_lang_String::create_from_platform_dependent_str(const char* str, TRAPS) { 248 assert(str != NULL, "bad arguments"); 249 250 typedef jstring (*to_java_string_fn_t)(JNIEnv*, const char *); 251 static to_java_string_fn_t _to_java_string_fn = NULL; 252 253 if (_to_java_string_fn == NULL) { 254 void *lib_handle = os::native_java_library(); 255 _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform")); 256 if (_to_java_string_fn == NULL) { 257 fatal("NewStringPlatform missing"); 258 } 259 } 260 261 jstring js = NULL; 262 { JavaThread* thread = (JavaThread*)THREAD; 263 assert(thread->is_Java_thread(), "must be java thread"); 264 HandleMark hm(thread); 265 ThreadToNativeFromVM ttn(thread); 266 js = (_to_java_string_fn)(thread->jni_environment(), str); 267 } 268 return Handle(THREAD, JNIHandles::resolve(js)); 269 } 270 271 // Converts a Java String to a native C string that can be used for 272 // native OS calls. 273 char* java_lang_String::as_platform_dependent_str(Handle java_string, TRAPS) { 274 275 typedef char* (*to_platform_string_fn_t)(JNIEnv*, jstring, bool*); 276 static to_platform_string_fn_t _to_platform_string_fn = NULL; 277 278 if (_to_platform_string_fn == NULL) { 279 void *lib_handle = os::native_java_library(); 280 _to_platform_string_fn = CAST_TO_FN_PTR(to_platform_string_fn_t, os::dll_lookup(lib_handle, "GetStringPlatformChars")); 281 if (_to_platform_string_fn == NULL) { 282 fatal("GetStringPlatformChars missing"); 283 } 284 } 285 286 char *native_platform_string; 287 { JavaThread* thread = (JavaThread*)THREAD; 288 assert(thread->is_Java_thread(), "must be java thread"); 289 JNIEnv *env = thread->jni_environment(); 290 jstring js = (jstring) JNIHandles::make_local(env, java_string()); 291 bool is_copy; 292 HandleMark hm(thread); 293 ThreadToNativeFromVM ttn(thread); 294 native_platform_string = (_to_platform_string_fn)(env, js, &is_copy); 295 assert(is_copy == JNI_TRUE, "is_copy value changed"); 296 JNIHandles::destroy_local(js); 297 } 298 return native_platform_string; 299 } 300 301 Handle java_lang_String::char_converter(Handle java_string, jchar from_char, jchar to_char, TRAPS) { 302 oop obj = java_string(); 303 // Typical usage is to convert all '/' to '.' in string. 304 typeArrayOop value = java_lang_String::value(obj); 305 int offset = java_lang_String::offset(obj); 306 int length = java_lang_String::length(obj); 307 308 // First check if any from_char exist 309 int index; // Declared outside, used later 310 for (index = 0; index < length; index++) { 311 if (value->char_at(index + offset) == from_char) { 312 break; 313 } 314 } 315 if (index == length) { 316 // No from_char, so do not copy. 317 return java_string; 318 } 319 320 // Create new UNICODE buffer. Must handlize value because GC 321 // may happen during String and char array creation. 322 typeArrayHandle h_value(THREAD, value); 323 Handle string = basic_create(length, false, CHECK_NH); 324 325 typeArrayOop from_buffer = h_value(); 326 typeArrayOop to_buffer = java_lang_String::value(string()); 327 328 // Copy contents 329 for (index = 0; index < length; index++) { 330 jchar c = from_buffer->char_at(index + offset); 331 if (c == from_char) { 332 c = to_char; 333 } 334 to_buffer->char_at_put(index, c); 335 } 336 return string; 337 } 338 339 jchar* java_lang_String::as_unicode_string(oop java_string, int& length) { 340 typeArrayOop value = java_lang_String::value(java_string); 341 int offset = java_lang_String::offset(java_string); 342 length = java_lang_String::length(java_string); 343 344 jchar* result = NEW_RESOURCE_ARRAY(jchar, length); 345 for (int index = 0; index < length; index++) { 346 result[index] = value->char_at(index + offset); 347 } 348 return result; 349 } 350 351 unsigned int java_lang_String::to_hash(oop java_string) { 352 int length = java_lang_String::length(java_string); 353 // Zero length string will hash to zero with String.toHash() function. 354 if (length == 0) return 0; 355 356 typeArrayOop value = java_lang_String::value(java_string); 357 int offset = java_lang_String::offset(java_string); 358 return java_lang_String::to_hash(value->char_at_addr(offset), length); 359 } 360 361 unsigned int java_lang_String::hash_string(oop java_string) { 362 int length = java_lang_String::length(java_string); 363 // Zero length string doesn't hash necessarily hash to zero. 364 if (length == 0) { 365 return StringTable::hash_string(NULL, 0); 366 } 367 368 typeArrayOop value = java_lang_String::value(java_string); 369 int offset = java_lang_String::offset(java_string); 370 return StringTable::hash_string(value->char_at_addr(offset), length); 371 } 372 373 Symbol* java_lang_String::as_symbol(Handle java_string, TRAPS) { 374 oop obj = java_string(); 375 typeArrayOop value = java_lang_String::value(obj); 376 int offset = java_lang_String::offset(obj); 377 int length = java_lang_String::length(obj); 378 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset); 379 Symbol* sym = SymbolTable::lookup_unicode(base, length, THREAD); 380 return sym; 381 } 382 383 Symbol* java_lang_String::as_symbol_or_null(oop java_string) { 384 typeArrayOop value = java_lang_String::value(java_string); 385 int offset = java_lang_String::offset(java_string); 386 int length = java_lang_String::length(java_string); 387 jchar* base = (length == 0) ? NULL : value->char_at_addr(offset); 388 return SymbolTable::probe_unicode(base, length); 389 } 390 391 392 int java_lang_String::utf8_length(oop java_string) { 393 typeArrayOop value = java_lang_String::value(java_string); 394 int offset = java_lang_String::offset(java_string); 395 int length = java_lang_String::length(java_string); 396 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); 397 return UNICODE::utf8_length(position, length); 398 } 399 400 char* java_lang_String::as_utf8_string(oop java_string) { 401 typeArrayOop value = java_lang_String::value(java_string); 402 int offset = java_lang_String::offset(java_string); 403 int length = java_lang_String::length(java_string); 404 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); 405 return UNICODE::as_utf8(position, length); 406 } 407 408 char* java_lang_String::as_utf8_string(oop java_string, char* buf, int buflen) { 409 typeArrayOop value = java_lang_String::value(java_string); 410 int offset = java_lang_String::offset(java_string); 411 int length = java_lang_String::length(java_string); 412 jchar* position = (length == 0) ? NULL : value->char_at_addr(offset); 413 return UNICODE::as_utf8(position, length, buf, buflen); 414 } 415 416 char* java_lang_String::as_utf8_string(oop java_string, int start, int len) { 417 typeArrayOop value = java_lang_String::value(java_string); 418 int offset = java_lang_String::offset(java_string); 419 int length = java_lang_String::length(java_string); 420 assert(start + len <= length, "just checking"); 421 jchar* position = value->char_at_addr(offset + start); 422 return UNICODE::as_utf8(position, len); 423 } 424 425 bool java_lang_String::equals(oop java_string, jchar* chars, int len) { 426 assert(SharedSkipVerify || 427 java_string->klass() == SystemDictionary::String_klass(), 428 "must be java_string"); 429 typeArrayOop value = java_lang_String::value(java_string); 430 int offset = java_lang_String::offset(java_string); 431 int length = java_lang_String::length(java_string); 432 if (length != len) { 433 return false; 434 } 435 for (int i = 0; i < len; i++) { 436 if (value->char_at(i + offset) != chars[i]) { 437 return false; 438 } 439 } 440 return true; 441 } 442 443 void java_lang_String::print(Handle java_string, outputStream* st) { 444 oop obj = java_string(); 445 assert(obj->klass() == SystemDictionary::String_klass(), "must be java_string"); 446 typeArrayOop value = java_lang_String::value(obj); 447 int offset = java_lang_String::offset(obj); 448 int length = java_lang_String::length(obj); 449 450 int end = MIN2(length, 100); 451 if (value == NULL) { 452 // This can happen if, e.g., printing a String 453 // object before its initializer has been called 454 st->print_cr("NULL"); 455 } else { 456 st->print("\""); 457 for (int index = 0; index < length; index++) { 458 st->print("%c", value->char_at(index + offset)); 459 } 460 st->print("\""); 461 } 462 } 463 464 static void initialize_static_field(fieldDescriptor* fd, TRAPS) { 465 Handle mirror (THREAD, fd->field_holder()->java_mirror()); 466 assert(mirror.not_null() && fd->is_static(), "just checking"); 467 if (fd->has_initial_value()) { 468 BasicType t = fd->field_type(); 469 switch (t) { 470 case T_BYTE: 471 mirror()->byte_field_put(fd->offset(), fd->int_initial_value()); 472 break; 473 case T_BOOLEAN: 474 mirror()->bool_field_put(fd->offset(), fd->int_initial_value()); 475 break; 476 case T_CHAR: 477 mirror()->char_field_put(fd->offset(), fd->int_initial_value()); 478 break; 479 case T_SHORT: 480 mirror()->short_field_put(fd->offset(), fd->int_initial_value()); 481 break; 482 case T_INT: 483 mirror()->int_field_put(fd->offset(), fd->int_initial_value()); 484 break; 485 case T_FLOAT: 486 mirror()->float_field_put(fd->offset(), fd->float_initial_value()); 487 break; 488 case T_DOUBLE: 489 mirror()->double_field_put(fd->offset(), fd->double_initial_value()); 490 break; 491 case T_LONG: 492 mirror()->long_field_put(fd->offset(), fd->long_initial_value()); 493 break; 494 case T_OBJECT: 495 { 496 #ifdef ASSERT 497 TempNewSymbol sym = SymbolTable::new_symbol("Ljava/lang/String;", CHECK); 498 assert(fd->signature() == sym, "just checking"); 499 #endif 500 oop string = fd->string_initial_value(CHECK); 501 mirror()->obj_field_put(fd->offset(), string); 502 } 503 break; 504 default: 505 THROW_MSG(vmSymbols::java_lang_ClassFormatError(), 506 "Illegal ConstantValue attribute in class file"); 507 } 508 } 509 } 510 511 512 void java_lang_Class::fixup_mirror(KlassHandle k, TRAPS) { 513 assert(instanceMirrorKlass::offset_of_static_fields() != 0, "must have been computed already"); 514 515 if (k->oop_is_instance()) { 516 // During bootstrap, java.lang.Class wasn't loaded so static field 517 // offsets were computed without the size added it. Go back and 518 // update all the static field offsets to included the size. 519 for (JavaFieldStream fs(instanceKlass::cast(k())); !fs.done(); fs.next()) { 520 if (fs.access_flags().is_static()) { 521 int real_offset = fs.offset() + instanceMirrorKlass::offset_of_static_fields(); 522 fs.set_offset(real_offset); 523 } 524 } 525 } 526 create_mirror(k, CHECK); 527 } 528 529 oop java_lang_Class::create_mirror(KlassHandle k, TRAPS) { 530 assert(k->java_mirror() == NULL, "should only assign mirror once"); 531 // Use this moment of initialization to cache modifier_flags also, 532 // to support Class.getModifiers(). Instance classes recalculate 533 // the cached flags after the class file is parsed, but before the 534 // class is put into the system dictionary. 535 int computed_modifiers = k->compute_modifier_flags(CHECK_0); 536 k->set_modifier_flags(computed_modifiers); 537 if (SystemDictionary::Class_klass_loaded() && (k->oop_is_instance() || k->oop_is_javaArray())) { 538 // Allocate mirror (java.lang.Class instance) 539 Handle mirror = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance(k, CHECK_0); 540 541 instanceMirrorKlass* mk = instanceMirrorKlass::cast(mirror->klass()); 542 java_lang_Class::set_static_oop_field_count(mirror(), mk->compute_static_oop_field_count(mirror())); 543 544 // It might also have a component mirror. This mirror must already exist. 545 if (k->oop_is_javaArray()) { 546 Handle comp_mirror; 547 if (k->oop_is_typeArray()) { 548 BasicType type = typeArrayKlass::cast(k->as_klassOop())->element_type(); 549 comp_mirror = Universe::java_mirror(type); 550 assert(comp_mirror.not_null(), "must have primitive mirror"); 551 } else if (k->oop_is_objArray()) { 552 klassOop element_klass = objArrayKlass::cast(k->as_klassOop())->element_klass(); 553 if (element_klass != NULL 554 && (Klass::cast(element_klass)->oop_is_instance() || 555 Klass::cast(element_klass)->oop_is_javaArray())) { 556 comp_mirror = Klass::cast(element_klass)->java_mirror(); 557 assert(comp_mirror.not_null(), "must have element mirror"); 558 } 559 // else some object array internal to the VM, like systemObjArrayKlassObj 560 } 561 if (comp_mirror.not_null()) { 562 // Two-way link between the array klass and its component mirror: 563 arrayKlass::cast(k->as_klassOop())->set_component_mirror(comp_mirror()); 564 set_array_klass(comp_mirror(), k->as_klassOop()); 565 } 566 } else if (k->oop_is_instance()) { 567 // Initialize static fields 568 instanceKlass::cast(k())->do_local_static_fields(&initialize_static_field, CHECK_NULL); 569 } 570 return mirror(); 571 } else { 572 return NULL; 573 } 574 } 575 576 577 578 int java_lang_Class::oop_size(oop java_class) { 579 assert(_oop_size_offset != 0, "must be set"); 580 return java_class->int_field(_oop_size_offset); 581 } 582 void java_lang_Class::set_oop_size(oop java_class, int size) { 583 assert(_oop_size_offset != 0, "must be set"); 584 java_class->int_field_put(_oop_size_offset, size); 585 } 586 int java_lang_Class::static_oop_field_count(oop java_class) { 587 assert(_static_oop_field_count_offset != 0, "must be set"); 588 return java_class->int_field(_static_oop_field_count_offset); 589 } 590 void java_lang_Class::set_static_oop_field_count(oop java_class, int size) { 591 assert(_static_oop_field_count_offset != 0, "must be set"); 592 java_class->int_field_put(_static_oop_field_count_offset, size); 593 } 594 595 oop java_lang_Class::create_basic_type_mirror(const char* basic_type_name, BasicType type, TRAPS) { 596 // This should be improved by adding a field at the Java level or by 597 // introducing a new VM klass (see comment in ClassFileParser) 598 oop java_class = instanceMirrorKlass::cast(SystemDictionary::Class_klass())->allocate_instance((oop)NULL, CHECK_0); 599 if (type != T_VOID) { 600 klassOop aklass = Universe::typeArrayKlassObj(type); 601 assert(aklass != NULL, "correct bootstrap"); 602 set_array_klass(java_class, aklass); 603 } 604 #ifdef ASSERT 605 instanceMirrorKlass* mk = instanceMirrorKlass::cast(SystemDictionary::Class_klass()); 606 assert(java_lang_Class::static_oop_field_count(java_class) == 0, "should have been zeroed by allocation"); 607 #endif 608 return java_class; 609 } 610 611 612 klassOop java_lang_Class::as_klassOop(oop java_class) { 613 //%note memory_2 614 assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 615 klassOop k = klassOop(java_class->obj_field(_klass_offset)); 616 assert(k == NULL || k->is_klass(), "type check"); 617 return k; 618 } 619 620 621 void java_lang_Class::set_klass(oop java_class, klassOop klass) { 622 assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 623 java_class->obj_field_put(_klass_offset, klass); 624 } 625 626 627 void java_lang_Class::print_signature(oop java_class, outputStream* st) { 628 assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 629 Symbol* name = NULL; 630 bool is_instance = false; 631 if (is_primitive(java_class)) { 632 name = vmSymbols::type_signature(primitive_type(java_class)); 633 } else { 634 klassOop k = as_klassOop(java_class); 635 is_instance = Klass::cast(k)->oop_is_instance(); 636 name = Klass::cast(k)->name(); 637 } 638 if (name == NULL) { 639 st->print("<null>"); 640 return; 641 } 642 if (is_instance) st->print("L"); 643 st->write((char*) name->base(), (int) name->utf8_length()); 644 if (is_instance) st->print(";"); 645 } 646 647 Symbol* java_lang_Class::as_signature(oop java_class, bool intern_if_not_found, TRAPS) { 648 assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 649 Symbol* name; 650 if (is_primitive(java_class)) { 651 name = vmSymbols::type_signature(primitive_type(java_class)); 652 // Because this can create a new symbol, the caller has to decrement 653 // the refcount, so make adjustment here and below for symbols returned 654 // that are not created or incremented due to a successful lookup. 655 name->increment_refcount(); 656 } else { 657 klassOop k = as_klassOop(java_class); 658 if (!Klass::cast(k)->oop_is_instance()) { 659 name = Klass::cast(k)->name(); 660 name->increment_refcount(); 661 } else { 662 ResourceMark rm; 663 const char* sigstr = Klass::cast(k)->signature_name(); 664 int siglen = (int) strlen(sigstr); 665 if (!intern_if_not_found) { 666 name = SymbolTable::probe(sigstr, siglen); 667 } else { 668 name = SymbolTable::new_symbol(sigstr, siglen, THREAD); 669 } 670 } 671 } 672 return name; 673 } 674 675 676 klassOop java_lang_Class::array_klass(oop java_class) { 677 klassOop k = klassOop(java_class->obj_field(_array_klass_offset)); 678 assert(k == NULL || k->is_klass() && Klass::cast(k)->oop_is_javaArray(), "should be array klass"); 679 return k; 680 } 681 682 683 void java_lang_Class::set_array_klass(oop java_class, klassOop klass) { 684 assert(klass->is_klass() && Klass::cast(klass)->oop_is_javaArray(), "should be array klass"); 685 java_class->obj_field_put(_array_klass_offset, klass); 686 } 687 688 689 methodOop java_lang_Class::resolved_constructor(oop java_class) { 690 oop constructor = java_class->obj_field(_resolved_constructor_offset); 691 assert(constructor == NULL || constructor->is_method(), "should be method"); 692 return methodOop(constructor); 693 } 694 695 696 void java_lang_Class::set_resolved_constructor(oop java_class, methodOop constructor) { 697 assert(constructor->is_method(), "should be method"); 698 java_class->obj_field_put(_resolved_constructor_offset, constructor); 699 } 700 701 702 bool java_lang_Class::is_primitive(oop java_class) { 703 // should assert: 704 //assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 705 klassOop k = klassOop(java_class->obj_field(_klass_offset)); 706 return k == NULL; 707 } 708 709 710 BasicType java_lang_Class::primitive_type(oop java_class) { 711 assert(java_lang_Class::is_primitive(java_class), "just checking"); 712 klassOop ak = klassOop(java_class->obj_field(_array_klass_offset)); 713 BasicType type = T_VOID; 714 if (ak != NULL) { 715 // Note: create_basic_type_mirror above initializes ak to a non-null value. 716 type = arrayKlass::cast(ak)->element_type(); 717 } else { 718 assert(java_class == Universe::void_mirror(), "only valid non-array primitive"); 719 } 720 assert(Universe::java_mirror(type) == java_class, "must be consistent"); 721 return type; 722 } 723 724 BasicType java_lang_Class::as_BasicType(oop java_class, klassOop* reference_klass) { 725 assert(java_lang_Class::is_instance(java_class), "must be a Class object"); 726 if (is_primitive(java_class)) { 727 if (reference_klass != NULL) 728 (*reference_klass) = NULL; 729 return primitive_type(java_class); 730 } else { 731 if (reference_klass != NULL) 732 (*reference_klass) = as_klassOop(java_class); 733 return T_OBJECT; 734 } 735 } 736 737 738 oop java_lang_Class::primitive_mirror(BasicType t) { 739 oop mirror = Universe::java_mirror(t); 740 assert(mirror != NULL && mirror->is_a(SystemDictionary::Class_klass()), "must be a Class"); 741 assert(java_lang_Class::is_primitive(mirror), "must be primitive"); 742 return mirror; 743 } 744 745 bool java_lang_Class::offsets_computed = false; 746 int java_lang_Class::classRedefinedCount_offset = -1; 747 748 void java_lang_Class::compute_offsets() { 749 assert(!offsets_computed, "offsets should be initialized only once"); 750 offsets_computed = true; 751 752 klassOop klass_oop = SystemDictionary::Class_klass(); 753 // The classRedefinedCount field is only present starting in 1.5, 754 // so don't go fatal. 755 compute_optional_offset(classRedefinedCount_offset, 756 klass_oop, vmSymbols::classRedefinedCount_name(), vmSymbols::int_signature()); 757 758 CLASS_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 759 } 760 761 int java_lang_Class::classRedefinedCount(oop the_class_mirror) { 762 if (!JDK_Version::is_gte_jdk15x_version() 763 || classRedefinedCount_offset == -1) { 764 // The classRedefinedCount field is only present starting in 1.5. 765 // If we don't have an offset for it then just return -1 as a marker. 766 return -1; 767 } 768 769 return the_class_mirror->int_field(classRedefinedCount_offset); 770 } 771 772 void java_lang_Class::set_classRedefinedCount(oop the_class_mirror, int value) { 773 if (!JDK_Version::is_gte_jdk15x_version() 774 || classRedefinedCount_offset == -1) { 775 // The classRedefinedCount field is only present starting in 1.5. 776 // If we don't have an offset for it then nothing to set. 777 return; 778 } 779 780 the_class_mirror->int_field_put(classRedefinedCount_offset, value); 781 } 782 783 784 // Note: JDK1.1 and before had a privateInfo_offset field which was used for the 785 // platform thread structure, and a eetop offset which was used for thread 786 // local storage (and unused by the HotSpot VM). In JDK1.2 the two structures 787 // merged, so in the HotSpot VM we just use the eetop field for the thread 788 // instead of the privateInfo_offset. 789 // 790 // Note: The stackSize field is only present starting in 1.4. 791 792 int java_lang_Thread::_name_offset = 0; 793 int java_lang_Thread::_group_offset = 0; 794 int java_lang_Thread::_contextClassLoader_offset = 0; 795 int java_lang_Thread::_inheritedAccessControlContext_offset = 0; 796 int java_lang_Thread::_priority_offset = 0; 797 int java_lang_Thread::_eetop_offset = 0; 798 int java_lang_Thread::_daemon_offset = 0; 799 int java_lang_Thread::_stillborn_offset = 0; 800 int java_lang_Thread::_stackSize_offset = 0; 801 int java_lang_Thread::_tid_offset = 0; 802 int java_lang_Thread::_thread_status_offset = 0; 803 int java_lang_Thread::_park_blocker_offset = 0; 804 int java_lang_Thread::_park_event_offset = 0 ; 805 806 807 void java_lang_Thread::compute_offsets() { 808 assert(_group_offset == 0, "offsets should be initialized only once"); 809 810 klassOop k = SystemDictionary::Thread_klass(); 811 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::char_array_signature()); 812 compute_offset(_group_offset, k, vmSymbols::group_name(), vmSymbols::threadgroup_signature()); 813 compute_offset(_contextClassLoader_offset, k, vmSymbols::contextClassLoader_name(), vmSymbols::classloader_signature()); 814 compute_offset(_inheritedAccessControlContext_offset, k, vmSymbols::inheritedAccessControlContext_name(), vmSymbols::accesscontrolcontext_signature()); 815 compute_offset(_priority_offset, k, vmSymbols::priority_name(), vmSymbols::int_signature()); 816 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); 817 compute_offset(_eetop_offset, k, vmSymbols::eetop_name(), vmSymbols::long_signature()); 818 compute_offset(_stillborn_offset, k, vmSymbols::stillborn_name(), vmSymbols::bool_signature()); 819 // The stackSize field is only present starting in 1.4, so don't go fatal. 820 compute_optional_offset(_stackSize_offset, k, vmSymbols::stackSize_name(), vmSymbols::long_signature()); 821 // The tid and thread_status fields are only present starting in 1.5, so don't go fatal. 822 compute_optional_offset(_tid_offset, k, vmSymbols::thread_id_name(), vmSymbols::long_signature()); 823 compute_optional_offset(_thread_status_offset, k, vmSymbols::thread_status_name(), vmSymbols::int_signature()); 824 // The parkBlocker field is only present starting in 1.6, so don't go fatal. 825 compute_optional_offset(_park_blocker_offset, k, vmSymbols::park_blocker_name(), vmSymbols::object_signature()); 826 compute_optional_offset(_park_event_offset, k, vmSymbols::park_event_name(), 827 vmSymbols::long_signature()); 828 } 829 830 831 JavaThread* java_lang_Thread::thread(oop java_thread) { 832 return (JavaThread*)java_thread->address_field(_eetop_offset); 833 } 834 835 836 void java_lang_Thread::set_thread(oop java_thread, JavaThread* thread) { 837 java_thread->address_field_put(_eetop_offset, (address)thread); 838 } 839 840 841 typeArrayOop java_lang_Thread::name(oop java_thread) { 842 oop name = java_thread->obj_field(_name_offset); 843 assert(name == NULL || (name->is_typeArray() && typeArrayKlass::cast(name->klass())->element_type() == T_CHAR), "just checking"); 844 return typeArrayOop(name); 845 } 846 847 848 void java_lang_Thread::set_name(oop java_thread, typeArrayOop name) { 849 assert(java_thread->obj_field(_name_offset) == NULL, "name should be NULL"); 850 java_thread->obj_field_put(_name_offset, name); 851 } 852 853 854 ThreadPriority java_lang_Thread::priority(oop java_thread) { 855 return (ThreadPriority)java_thread->int_field(_priority_offset); 856 } 857 858 859 void java_lang_Thread::set_priority(oop java_thread, ThreadPriority priority) { 860 java_thread->int_field_put(_priority_offset, priority); 861 } 862 863 864 oop java_lang_Thread::threadGroup(oop java_thread) { 865 return java_thread->obj_field(_group_offset); 866 } 867 868 869 bool java_lang_Thread::is_stillborn(oop java_thread) { 870 return java_thread->bool_field(_stillborn_offset) != 0; 871 } 872 873 874 // We never have reason to turn the stillborn bit off 875 void java_lang_Thread::set_stillborn(oop java_thread) { 876 java_thread->bool_field_put(_stillborn_offset, true); 877 } 878 879 880 bool java_lang_Thread::is_alive(oop java_thread) { 881 JavaThread* thr = java_lang_Thread::thread(java_thread); 882 return (thr != NULL); 883 } 884 885 886 bool java_lang_Thread::is_daemon(oop java_thread) { 887 return java_thread->bool_field(_daemon_offset) != 0; 888 } 889 890 891 void java_lang_Thread::set_daemon(oop java_thread) { 892 java_thread->bool_field_put(_daemon_offset, true); 893 } 894 895 oop java_lang_Thread::context_class_loader(oop java_thread) { 896 return java_thread->obj_field(_contextClassLoader_offset); 897 } 898 899 oop java_lang_Thread::inherited_access_control_context(oop java_thread) { 900 return java_thread->obj_field(_inheritedAccessControlContext_offset); 901 } 902 903 904 jlong java_lang_Thread::stackSize(oop java_thread) { 905 // The stackSize field is only present starting in 1.4 906 if (_stackSize_offset > 0) { 907 assert(JDK_Version::is_gte_jdk14x_version(), "sanity check"); 908 return java_thread->long_field(_stackSize_offset); 909 } else { 910 return 0; 911 } 912 } 913 914 // Write the thread status value to threadStatus field in java.lang.Thread java class. 915 void java_lang_Thread::set_thread_status(oop java_thread, 916 java_lang_Thread::ThreadStatus status) { 917 assert(JavaThread::current()->thread_state() == _thread_in_vm, "Java Thread is not running in vm"); 918 // The threadStatus is only present starting in 1.5 919 if (_thread_status_offset > 0) { 920 java_thread->int_field_put(_thread_status_offset, status); 921 } 922 } 923 924 // Read thread status value from threadStatus field in java.lang.Thread java class. 925 java_lang_Thread::ThreadStatus java_lang_Thread::get_thread_status(oop java_thread) { 926 assert(Thread::current()->is_VM_thread() || 927 JavaThread::current()->thread_state() == _thread_in_vm, 928 "Java Thread is not running in vm"); 929 // The threadStatus is only present starting in 1.5 930 if (_thread_status_offset > 0) { 931 return (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); 932 } else { 933 // All we can easily figure out is if it is alive, but that is 934 // enough info for a valid unknown status. 935 // These aren't restricted to valid set ThreadStatus values, so 936 // use JVMTI values and cast. 937 JavaThread* thr = java_lang_Thread::thread(java_thread); 938 if (thr == NULL) { 939 // the thread hasn't run yet or is in the process of exiting 940 return NEW; 941 } 942 return (java_lang_Thread::ThreadStatus)JVMTI_THREAD_STATE_ALIVE; 943 } 944 } 945 946 947 jlong java_lang_Thread::thread_id(oop java_thread) { 948 // The thread ID field is only present starting in 1.5 949 if (_tid_offset > 0) { 950 return java_thread->long_field(_tid_offset); 951 } else { 952 return 0; 953 } 954 } 955 956 oop java_lang_Thread::park_blocker(oop java_thread) { 957 assert(JDK_Version::current().supports_thread_park_blocker() && 958 _park_blocker_offset != 0, "Must support parkBlocker field"); 959 960 if (_park_blocker_offset > 0) { 961 return java_thread->obj_field(_park_blocker_offset); 962 } 963 964 return NULL; 965 } 966 967 jlong java_lang_Thread::park_event(oop java_thread) { 968 if (_park_event_offset > 0) { 969 return java_thread->long_field(_park_event_offset); 970 } 971 return 0; 972 } 973 974 bool java_lang_Thread::set_park_event(oop java_thread, jlong ptr) { 975 if (_park_event_offset > 0) { 976 java_thread->long_field_put(_park_event_offset, ptr); 977 return true; 978 } 979 return false; 980 } 981 982 983 const char* java_lang_Thread::thread_status_name(oop java_thread) { 984 assert(JDK_Version::is_gte_jdk15x_version() && _thread_status_offset != 0, "Must have thread status"); 985 ThreadStatus status = (java_lang_Thread::ThreadStatus)java_thread->int_field(_thread_status_offset); 986 switch (status) { 987 case NEW : return "NEW"; 988 case RUNNABLE : return "RUNNABLE"; 989 case SLEEPING : return "TIMED_WAITING (sleeping)"; 990 case IN_OBJECT_WAIT : return "WAITING (on object monitor)"; 991 case IN_OBJECT_WAIT_TIMED : return "TIMED_WAITING (on object monitor)"; 992 case PARKED : return "WAITING (parking)"; 993 case PARKED_TIMED : return "TIMED_WAITING (parking)"; 994 case BLOCKED_ON_MONITOR_ENTER : return "BLOCKED (on object monitor)"; 995 case TERMINATED : return "TERMINATED"; 996 default : return "UNKNOWN"; 997 }; 998 } 999 int java_lang_ThreadGroup::_parent_offset = 0; 1000 int java_lang_ThreadGroup::_name_offset = 0; 1001 int java_lang_ThreadGroup::_threads_offset = 0; 1002 int java_lang_ThreadGroup::_groups_offset = 0; 1003 int java_lang_ThreadGroup::_maxPriority_offset = 0; 1004 int java_lang_ThreadGroup::_destroyed_offset = 0; 1005 int java_lang_ThreadGroup::_daemon_offset = 0; 1006 int java_lang_ThreadGroup::_vmAllowSuspension_offset = 0; 1007 int java_lang_ThreadGroup::_nthreads_offset = 0; 1008 int java_lang_ThreadGroup::_ngroups_offset = 0; 1009 1010 oop java_lang_ThreadGroup::parent(oop java_thread_group) { 1011 assert(java_thread_group->is_oop(), "thread group must be oop"); 1012 return java_thread_group->obj_field(_parent_offset); 1013 } 1014 1015 // ("name as oop" accessor is not necessary) 1016 1017 typeArrayOop java_lang_ThreadGroup::name(oop java_thread_group) { 1018 oop name = java_thread_group->obj_field(_name_offset); 1019 // ThreadGroup.name can be null 1020 return name == NULL ? (typeArrayOop)NULL : java_lang_String::value(name); 1021 } 1022 1023 int java_lang_ThreadGroup::nthreads(oop java_thread_group) { 1024 assert(java_thread_group->is_oop(), "thread group must be oop"); 1025 return java_thread_group->int_field(_nthreads_offset); 1026 } 1027 1028 objArrayOop java_lang_ThreadGroup::threads(oop java_thread_group) { 1029 oop threads = java_thread_group->obj_field(_threads_offset); 1030 assert(threads != NULL, "threadgroups should have threads"); 1031 assert(threads->is_objArray(), "just checking"); // Todo: Add better type checking code 1032 return objArrayOop(threads); 1033 } 1034 1035 int java_lang_ThreadGroup::ngroups(oop java_thread_group) { 1036 assert(java_thread_group->is_oop(), "thread group must be oop"); 1037 return java_thread_group->int_field(_ngroups_offset); 1038 } 1039 1040 objArrayOop java_lang_ThreadGroup::groups(oop java_thread_group) { 1041 oop groups = java_thread_group->obj_field(_groups_offset); 1042 assert(groups == NULL || groups->is_objArray(), "just checking"); // Todo: Add better type checking code 1043 return objArrayOop(groups); 1044 } 1045 1046 ThreadPriority java_lang_ThreadGroup::maxPriority(oop java_thread_group) { 1047 assert(java_thread_group->is_oop(), "thread group must be oop"); 1048 return (ThreadPriority) java_thread_group->int_field(_maxPriority_offset); 1049 } 1050 1051 bool java_lang_ThreadGroup::is_destroyed(oop java_thread_group) { 1052 assert(java_thread_group->is_oop(), "thread group must be oop"); 1053 return java_thread_group->bool_field(_destroyed_offset) != 0; 1054 } 1055 1056 bool java_lang_ThreadGroup::is_daemon(oop java_thread_group) { 1057 assert(java_thread_group->is_oop(), "thread group must be oop"); 1058 return java_thread_group->bool_field(_daemon_offset) != 0; 1059 } 1060 1061 bool java_lang_ThreadGroup::is_vmAllowSuspension(oop java_thread_group) { 1062 assert(java_thread_group->is_oop(), "thread group must be oop"); 1063 return java_thread_group->bool_field(_vmAllowSuspension_offset) != 0; 1064 } 1065 1066 void java_lang_ThreadGroup::compute_offsets() { 1067 assert(_parent_offset == 0, "offsets should be initialized only once"); 1068 1069 klassOop k = SystemDictionary::ThreadGroup_klass(); 1070 1071 compute_offset(_parent_offset, k, vmSymbols::parent_name(), vmSymbols::threadgroup_signature()); 1072 compute_offset(_name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); 1073 compute_offset(_threads_offset, k, vmSymbols::threads_name(), vmSymbols::thread_array_signature()); 1074 compute_offset(_groups_offset, k, vmSymbols::groups_name(), vmSymbols::threadgroup_array_signature()); 1075 compute_offset(_maxPriority_offset, k, vmSymbols::maxPriority_name(), vmSymbols::int_signature()); 1076 compute_offset(_destroyed_offset, k, vmSymbols::destroyed_name(), vmSymbols::bool_signature()); 1077 compute_offset(_daemon_offset, k, vmSymbols::daemon_name(), vmSymbols::bool_signature()); 1078 compute_offset(_vmAllowSuspension_offset, k, vmSymbols::vmAllowSuspension_name(), vmSymbols::bool_signature()); 1079 compute_offset(_nthreads_offset, k, vmSymbols::nthreads_name(), vmSymbols::int_signature()); 1080 compute_offset(_ngroups_offset, k, vmSymbols::ngroups_name(), vmSymbols::int_signature()); 1081 } 1082 1083 oop java_lang_Throwable::unassigned_stacktrace() { 1084 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Throwable_klass()); 1085 address addr = ik->static_field_addr(static_unassigned_stacktrace_offset); 1086 if (UseCompressedOops) { 1087 return oopDesc::load_decode_heap_oop((narrowOop *)addr); 1088 } else { 1089 return oopDesc::load_decode_heap_oop((oop*)addr); 1090 } 1091 } 1092 1093 oop java_lang_Throwable::backtrace(oop throwable) { 1094 return throwable->obj_field_acquire(backtrace_offset); 1095 } 1096 1097 1098 void java_lang_Throwable::set_backtrace(oop throwable, oop value) { 1099 throwable->release_obj_field_put(backtrace_offset, value); 1100 } 1101 1102 1103 oop java_lang_Throwable::message(oop throwable) { 1104 return throwable->obj_field(detailMessage_offset); 1105 } 1106 1107 1108 oop java_lang_Throwable::message(Handle throwable) { 1109 return throwable->obj_field(detailMessage_offset); 1110 } 1111 1112 1113 void java_lang_Throwable::set_message(oop throwable, oop value) { 1114 throwable->obj_field_put(detailMessage_offset, value); 1115 } 1116 1117 1118 void java_lang_Throwable::set_stacktrace(oop throwable, oop st_element_array) { 1119 throwable->obj_field_put(stackTrace_offset, st_element_array); 1120 } 1121 1122 void java_lang_Throwable::clear_stacktrace(oop throwable) { 1123 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); 1124 set_stacktrace(throwable, NULL); 1125 } 1126 1127 1128 void java_lang_Throwable::print(oop throwable, outputStream* st) { 1129 ResourceMark rm; 1130 klassOop k = throwable->klass(); 1131 assert(k != NULL, "just checking"); 1132 st->print("%s", instanceKlass::cast(k)->external_name()); 1133 oop msg = message(throwable); 1134 if (msg != NULL) { 1135 st->print(": %s", java_lang_String::as_utf8_string(msg)); 1136 } 1137 } 1138 1139 1140 void java_lang_Throwable::print(Handle throwable, outputStream* st) { 1141 ResourceMark rm; 1142 klassOop k = throwable->klass(); 1143 assert(k != NULL, "just checking"); 1144 st->print("%s", instanceKlass::cast(k)->external_name()); 1145 oop msg = message(throwable); 1146 if (msg != NULL) { 1147 st->print(": %s", java_lang_String::as_utf8_string(msg)); 1148 } 1149 } 1150 1151 // Print stack trace element to resource allocated buffer 1152 char* java_lang_Throwable::print_stack_element_to_buffer(methodOop method, int bci) { 1153 // Get strings and string lengths 1154 instanceKlass* klass = instanceKlass::cast(method->method_holder()); 1155 const char* klass_name = klass->external_name(); 1156 int buf_len = (int)strlen(klass_name); 1157 char* source_file_name; 1158 if (klass->source_file_name() == NULL) { 1159 source_file_name = NULL; 1160 } else { 1161 source_file_name = klass->source_file_name()->as_C_string(); 1162 buf_len += (int)strlen(source_file_name); 1163 } 1164 char* method_name = method->name()->as_C_string(); 1165 buf_len += (int)strlen(method_name); 1166 1167 // Allocate temporary buffer with extra space for formatting and line number 1168 char* buf = NEW_RESOURCE_ARRAY(char, buf_len + 64); 1169 1170 // Print stack trace line in buffer 1171 sprintf(buf, "\tat %s.%s", klass_name, method_name); 1172 if (method->is_native()) { 1173 strcat(buf, "(Native Method)"); 1174 } else { 1175 int line_number = method->line_number_from_bci(bci); 1176 if (source_file_name != NULL && (line_number != -1)) { 1177 // Sourcename and linenumber 1178 sprintf(buf + (int)strlen(buf), "(%s:%d)", source_file_name, line_number); 1179 } else if (source_file_name != NULL) { 1180 // Just sourcename 1181 sprintf(buf + (int)strlen(buf), "(%s)", source_file_name); 1182 } else { 1183 // Neither soucename and linenumber 1184 sprintf(buf + (int)strlen(buf), "(Unknown Source)"); 1185 } 1186 nmethod* nm = method->code(); 1187 if (WizardMode && nm != NULL) { 1188 sprintf(buf + (int)strlen(buf), "(nmethod " INTPTR_FORMAT ")", (intptr_t)nm); 1189 } 1190 } 1191 1192 return buf; 1193 } 1194 1195 1196 void java_lang_Throwable::print_stack_element(Handle stream, methodOop method, int bci) { 1197 ResourceMark rm; 1198 char* buf = print_stack_element_to_buffer(method, bci); 1199 print_to_stream(stream, buf); 1200 } 1201 1202 void java_lang_Throwable::print_stack_element(outputStream *st, methodOop method, int bci) { 1203 ResourceMark rm; 1204 char* buf = print_stack_element_to_buffer(method, bci); 1205 st->print_cr("%s", buf); 1206 } 1207 1208 void java_lang_Throwable::print_to_stream(Handle stream, const char* str) { 1209 if (stream.is_null()) { 1210 tty->print_cr("%s", str); 1211 } else { 1212 EXCEPTION_MARK; 1213 JavaValue result(T_VOID); 1214 Handle arg (THREAD, oopFactory::new_charArray(str, THREAD)); 1215 if (!HAS_PENDING_EXCEPTION) { 1216 JavaCalls::call_virtual(&result, 1217 stream, 1218 KlassHandle(THREAD, stream->klass()), 1219 vmSymbols::println_name(), 1220 vmSymbols::char_array_void_signature(), 1221 arg, 1222 THREAD); 1223 } 1224 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. 1225 if (HAS_PENDING_EXCEPTION) CLEAR_PENDING_EXCEPTION; 1226 } 1227 1228 } 1229 1230 1231 const char* java_lang_Throwable::no_stack_trace_message() { 1232 return "\t<<no stack trace available>>"; 1233 } 1234 1235 1236 // Currently used only for exceptions occurring during startup 1237 void java_lang_Throwable::print_stack_trace(oop throwable, outputStream* st) { 1238 Thread *THREAD = Thread::current(); 1239 Handle h_throwable(THREAD, throwable); 1240 while (h_throwable.not_null()) { 1241 objArrayHandle result (THREAD, objArrayOop(backtrace(h_throwable()))); 1242 if (result.is_null()) { 1243 st->print_cr(no_stack_trace_message()); 1244 return; 1245 } 1246 1247 while (result.not_null()) { 1248 objArrayHandle methods (THREAD, 1249 objArrayOop(result->obj_at(trace_methods_offset))); 1250 typeArrayHandle bcis (THREAD, 1251 typeArrayOop(result->obj_at(trace_bcis_offset))); 1252 1253 if (methods.is_null() || bcis.is_null()) { 1254 st->print_cr(no_stack_trace_message()); 1255 return; 1256 } 1257 1258 int length = methods()->length(); 1259 for (int index = 0; index < length; index++) { 1260 methodOop method = methodOop(methods()->obj_at(index)); 1261 if (method == NULL) goto handle_cause; 1262 int bci = bcis->ushort_at(index); 1263 print_stack_element(st, method, bci); 1264 } 1265 result = objArrayHandle(THREAD, objArrayOop(result->obj_at(trace_next_offset))); 1266 } 1267 handle_cause: 1268 { 1269 EXCEPTION_MARK; 1270 JavaValue result(T_OBJECT); 1271 JavaCalls::call_virtual(&result, 1272 h_throwable, 1273 KlassHandle(THREAD, h_throwable->klass()), 1274 vmSymbols::getCause_name(), 1275 vmSymbols::void_throwable_signature(), 1276 THREAD); 1277 // Ignore any exceptions. we are in the middle of exception handling. Same as classic VM. 1278 if (HAS_PENDING_EXCEPTION) { 1279 CLEAR_PENDING_EXCEPTION; 1280 h_throwable = Handle(); 1281 } else { 1282 h_throwable = Handle(THREAD, (oop) result.get_jobject()); 1283 if (h_throwable.not_null()) { 1284 st->print("Caused by: "); 1285 print(h_throwable, st); 1286 st->cr(); 1287 } 1288 } 1289 } 1290 } 1291 } 1292 1293 1294 void java_lang_Throwable::print_stack_trace(oop throwable, oop print_stream) { 1295 // Note: this is no longer used in Merlin, but we support it for compatibility. 1296 Thread *thread = Thread::current(); 1297 Handle stream(thread, print_stream); 1298 objArrayHandle result (thread, objArrayOop(backtrace(throwable))); 1299 if (result.is_null()) { 1300 print_to_stream(stream, no_stack_trace_message()); 1301 return; 1302 } 1303 1304 while (result.not_null()) { 1305 objArrayHandle methods (thread, 1306 objArrayOop(result->obj_at(trace_methods_offset))); 1307 typeArrayHandle bcis (thread, 1308 typeArrayOop(result->obj_at(trace_bcis_offset))); 1309 1310 if (methods.is_null() || bcis.is_null()) { 1311 print_to_stream(stream, no_stack_trace_message()); 1312 return; 1313 } 1314 1315 int length = methods()->length(); 1316 for (int index = 0; index < length; index++) { 1317 methodOop method = methodOop(methods()->obj_at(index)); 1318 if (method == NULL) return; 1319 int bci = bcis->ushort_at(index); 1320 print_stack_element(stream, method, bci); 1321 } 1322 result = objArrayHandle(thread, objArrayOop(result->obj_at(trace_next_offset))); 1323 } 1324 } 1325 1326 // This class provides a simple wrapper over the internal structure of 1327 // exception backtrace to insulate users of the backtrace from needing 1328 // to know what it looks like. 1329 class BacktraceBuilder: public StackObj { 1330 private: 1331 Handle _backtrace; 1332 objArrayOop _head; 1333 objArrayOop _methods; 1334 typeArrayOop _bcis; 1335 int _index; 1336 No_Safepoint_Verifier _nsv; 1337 1338 public: 1339 1340 enum { 1341 trace_methods_offset = java_lang_Throwable::trace_methods_offset, 1342 trace_bcis_offset = java_lang_Throwable::trace_bcis_offset, 1343 trace_next_offset = java_lang_Throwable::trace_next_offset, 1344 trace_size = java_lang_Throwable::trace_size, 1345 trace_chunk_size = java_lang_Throwable::trace_chunk_size 1346 }; 1347 1348 // constructor for new backtrace 1349 BacktraceBuilder(TRAPS): _methods(NULL), _bcis(NULL), _head(NULL) { 1350 expand(CHECK); 1351 _backtrace = _head; 1352 _index = 0; 1353 } 1354 1355 void expand(TRAPS) { 1356 objArrayHandle old_head(THREAD, _head); 1357 Pause_No_Safepoint_Verifier pnsv(&_nsv); 1358 1359 objArrayOop head = oopFactory::new_objectArray(trace_size, CHECK); 1360 objArrayHandle new_head(THREAD, head); 1361 1362 objArrayOop methods = oopFactory::new_objectArray(trace_chunk_size, CHECK); 1363 objArrayHandle new_methods(THREAD, methods); 1364 1365 typeArrayOop bcis = oopFactory::new_shortArray(trace_chunk_size, CHECK); 1366 typeArrayHandle new_bcis(THREAD, bcis); 1367 1368 if (!old_head.is_null()) { 1369 old_head->obj_at_put(trace_next_offset, new_head()); 1370 } 1371 new_head->obj_at_put(trace_methods_offset, new_methods()); 1372 new_head->obj_at_put(trace_bcis_offset, new_bcis()); 1373 1374 _head = new_head(); 1375 _methods = new_methods(); 1376 _bcis = new_bcis(); 1377 _index = 0; 1378 } 1379 1380 oop backtrace() { 1381 return _backtrace(); 1382 } 1383 1384 inline void push(methodOop method, int bci, TRAPS) { 1385 // Smear the -1 bci to 0 since the array only holds unsigned 1386 // shorts. The later line number lookup would just smear the -1 1387 // to a 0 even if it could be recorded. 1388 if (bci == SynchronizationEntryBCI) bci = 0; 1389 assert(bci == (jushort)bci, "doesn't fit"); 1390 1391 if (_index >= trace_chunk_size) { 1392 methodHandle mhandle(THREAD, method); 1393 expand(CHECK); 1394 method = mhandle(); 1395 } 1396 1397 _methods->obj_at_put(_index, method); 1398 _bcis->ushort_at_put(_index, bci); 1399 _index++; 1400 } 1401 1402 methodOop current_method() { 1403 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); 1404 return methodOop(_methods->obj_at(_index)); 1405 } 1406 1407 jushort current_bci() { 1408 assert(_index >= 0 && _index < trace_chunk_size, "out of range"); 1409 return _bcis->ushort_at(_index); 1410 } 1411 }; 1412 1413 1414 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method, TRAPS) { 1415 if (!StackTraceInThrowable) return; 1416 ResourceMark rm(THREAD); 1417 1418 // Start out by clearing the backtrace for this object, in case the VM 1419 // runs out of memory while allocating the stack trace 1420 set_backtrace(throwable(), NULL); 1421 if (JDK_Version::is_gte_jdk14x_version()) { 1422 // New since 1.4, clear lazily constructed Java level stacktrace if 1423 // refilling occurs 1424 // This is unnecessary in 1.7+ but harmless 1425 clear_stacktrace(throwable()); 1426 } 1427 1428 int max_depth = MaxJavaStackTraceDepth; 1429 JavaThread* thread = (JavaThread*)THREAD; 1430 BacktraceBuilder bt(CHECK); 1431 1432 // If there is no Java frame just return the method that was being called 1433 // with bci 0 1434 if (!thread->has_last_Java_frame()) { 1435 if (max_depth >= 1 && method() != NULL) { 1436 bt.push(method(), 0, CHECK); 1437 set_backtrace(throwable(), bt.backtrace()); 1438 } 1439 return; 1440 } 1441 1442 // Instead of using vframe directly, this version of fill_in_stack_trace 1443 // basically handles everything by hand. This significantly improved the 1444 // speed of this method call up to 28.5% on Solaris sparc. 27.1% on Windows. 1445 // See bug 6333838 for more details. 1446 // The "ASSERT" here is to verify this method generates the exactly same stack 1447 // trace as utilizing vframe. 1448 #ifdef ASSERT 1449 vframeStream st(thread); 1450 methodHandle st_method(THREAD, st.method()); 1451 #endif 1452 int total_count = 0; 1453 RegisterMap map(thread, false); 1454 int decode_offset = 0; 1455 nmethod* nm = NULL; 1456 bool skip_fillInStackTrace_check = false; 1457 bool skip_throwableInit_check = false; 1458 1459 for (frame fr = thread->last_frame(); max_depth != total_count;) { 1460 methodOop method = NULL; 1461 int bci = 0; 1462 1463 // Compiled java method case. 1464 if (decode_offset != 0) { 1465 DebugInfoReadStream stream(nm, decode_offset); 1466 decode_offset = stream.read_int(); 1467 method = (methodOop)nm->oop_at(stream.read_int()); 1468 bci = stream.read_bci(); 1469 } else { 1470 if (fr.is_first_frame()) break; 1471 address pc = fr.pc(); 1472 if (fr.is_interpreted_frame()) { 1473 intptr_t bcx = fr.interpreter_frame_bcx(); 1474 method = fr.interpreter_frame_method(); 1475 bci = fr.is_bci(bcx) ? bcx : method->bci_from((address)bcx); 1476 fr = fr.sender(&map); 1477 } else { 1478 CodeBlob* cb = fr.cb(); 1479 // HMMM QQQ might be nice to have frame return nm as NULL if cb is non-NULL 1480 // but non nmethod 1481 fr = fr.sender(&map); 1482 if (cb == NULL || !cb->is_nmethod()) { 1483 continue; 1484 } 1485 nm = (nmethod*)cb; 1486 if (nm->method()->is_native()) { 1487 method = nm->method(); 1488 bci = 0; 1489 } else { 1490 PcDesc* pd = nm->pc_desc_at(pc); 1491 decode_offset = pd->scope_decode_offset(); 1492 // if decode_offset is not equal to 0, it will execute the 1493 // "compiled java method case" at the beginning of the loop. 1494 continue; 1495 } 1496 } 1497 } 1498 #ifdef ASSERT 1499 assert(st_method() == method && st.bci() == bci, 1500 "Wrong stack trace"); 1501 st.next(); 1502 // vframeStream::method isn't GC-safe so store off a copy 1503 // of the methodOop in case we GC. 1504 if (!st.at_end()) { 1505 st_method = st.method(); 1506 } 1507 #endif 1508 1509 // the format of the stacktrace will be: 1510 // - 1 or more fillInStackTrace frames for the exception class (skipped) 1511 // - 0 or more <init> methods for the exception class (skipped) 1512 // - rest of the stack 1513 1514 if (!skip_fillInStackTrace_check) { 1515 if ((method->name() == vmSymbols::fillInStackTrace_name() || 1516 method->name() == vmSymbols::fillInStackTrace0_name()) && 1517 throwable->is_a(method->method_holder())) { 1518 continue; 1519 } 1520 else { 1521 skip_fillInStackTrace_check = true; // gone past them all 1522 } 1523 } 1524 if (!skip_throwableInit_check) { 1525 assert(skip_fillInStackTrace_check, "logic error in backtrace filtering"); 1526 1527 // skip <init> methods of the exception class and superclasses 1528 // This is simlar to classic VM. 1529 if (method->name() == vmSymbols::object_initializer_name() && 1530 throwable->is_a(method->method_holder())) { 1531 continue; 1532 } else { 1533 // there are none or we've seen them all - either way stop checking 1534 skip_throwableInit_check = true; 1535 } 1536 } 1537 bt.push(method, bci, CHECK); 1538 total_count++; 1539 } 1540 1541 // Put completed stack trace into throwable object 1542 set_backtrace(throwable(), bt.backtrace()); 1543 } 1544 1545 void java_lang_Throwable::fill_in_stack_trace(Handle throwable, methodHandle method) { 1546 // No-op if stack trace is disabled 1547 if (!StackTraceInThrowable) { 1548 return; 1549 } 1550 1551 // Disable stack traces for some preallocated out of memory errors 1552 if (!Universe::should_fill_in_stack_trace(throwable)) { 1553 return; 1554 } 1555 1556 PRESERVE_EXCEPTION_MARK; 1557 1558 JavaThread* thread = JavaThread::active(); 1559 fill_in_stack_trace(throwable, method, thread); 1560 // ignore exceptions thrown during stack trace filling 1561 CLEAR_PENDING_EXCEPTION; 1562 } 1563 1564 void java_lang_Throwable::allocate_backtrace(Handle throwable, TRAPS) { 1565 // Allocate stack trace - backtrace is created but not filled in 1566 1567 // No-op if stack trace is disabled 1568 if (!StackTraceInThrowable) return; 1569 1570 objArrayOop h_oop = oopFactory::new_objectArray(trace_size, CHECK); 1571 objArrayHandle backtrace (THREAD, h_oop); 1572 objArrayOop m_oop = oopFactory::new_objectArray(trace_chunk_size, CHECK); 1573 objArrayHandle methods (THREAD, m_oop); 1574 typeArrayOop b = oopFactory::new_shortArray(trace_chunk_size, CHECK); 1575 typeArrayHandle bcis(THREAD, b); 1576 1577 // backtrace has space for one chunk (next is NULL) 1578 backtrace->obj_at_put(trace_methods_offset, methods()); 1579 backtrace->obj_at_put(trace_bcis_offset, bcis()); 1580 set_backtrace(throwable(), backtrace()); 1581 } 1582 1583 1584 void java_lang_Throwable::fill_in_stack_trace_of_preallocated_backtrace(Handle throwable) { 1585 // Fill in stack trace into preallocated backtrace (no GC) 1586 1587 // No-op if stack trace is disabled 1588 if (!StackTraceInThrowable) return; 1589 1590 assert(throwable->is_a(SystemDictionary::Throwable_klass()), "sanity check"); 1591 1592 oop backtrace = java_lang_Throwable::backtrace(throwable()); 1593 assert(backtrace != NULL, "backtrace not preallocated"); 1594 1595 oop m = objArrayOop(backtrace)->obj_at(trace_methods_offset); 1596 objArrayOop methods = objArrayOop(m); 1597 assert(methods != NULL && methods->length() > 0, "method array not preallocated"); 1598 1599 oop b = objArrayOop(backtrace)->obj_at(trace_bcis_offset); 1600 typeArrayOop bcis = typeArrayOop(b); 1601 assert(bcis != NULL, "bci array not preallocated"); 1602 1603 assert(methods->length() == bcis->length(), "method and bci arrays should match"); 1604 1605 JavaThread* thread = JavaThread::current(); 1606 ResourceMark rm(thread); 1607 vframeStream st(thread); 1608 1609 // Unlike fill_in_stack_trace we do not skip fillInStackTrace or throwable init 1610 // methods as preallocated errors aren't created by "java" code. 1611 1612 // fill in as much stack trace as possible 1613 int max_chunks = MIN2(methods->length(), (int)MaxJavaStackTraceDepth); 1614 int chunk_count = 0; 1615 1616 for (;!st.at_end(); st.next()) { 1617 // Add entry and smear the -1 bci to 0 since the array only holds 1618 // unsigned shorts. The later line number lookup would just smear 1619 // the -1 to a 0 even if it could be recorded. 1620 int bci = st.bci(); 1621 if (bci == SynchronizationEntryBCI) bci = 0; 1622 assert(bci == (jushort)bci, "doesn't fit"); 1623 bcis->ushort_at_put(chunk_count, bci); 1624 methods->obj_at_put(chunk_count, st.method()); 1625 1626 chunk_count++; 1627 1628 // Bail-out for deep stacks 1629 if (chunk_count >= max_chunks) break; 1630 } 1631 1632 // For Java 7+ we support the Throwable immutability protocol defined for Java 7. This support 1633 // was missing in 7u0 so in 7u0 there is a workaround in the Throwable class. That workaround 1634 // can be removed in a JDK using this JVM version 1635 if (JDK_Version::is_gte_jdk17x_version()) { 1636 java_lang_Throwable::set_stacktrace(throwable(), java_lang_Throwable::unassigned_stacktrace()); 1637 assert(java_lang_Throwable::unassigned_stacktrace() != NULL, "not initialized"); 1638 } 1639 1640 } 1641 1642 1643 int java_lang_Throwable::get_stack_trace_depth(oop throwable, TRAPS) { 1644 if (throwable == NULL) { 1645 THROW_0(vmSymbols::java_lang_NullPointerException()); 1646 } 1647 objArrayOop chunk = objArrayOop(backtrace(throwable)); 1648 int depth = 0; 1649 if (chunk != NULL) { 1650 // Iterate over chunks and count full ones 1651 while (true) { 1652 objArrayOop next = objArrayOop(chunk->obj_at(trace_next_offset)); 1653 if (next == NULL) break; 1654 depth += trace_chunk_size; 1655 chunk = next; 1656 } 1657 assert(chunk != NULL && chunk->obj_at(trace_next_offset) == NULL, "sanity check"); 1658 // Count element in remaining partial chunk 1659 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); 1660 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); 1661 assert(methods != NULL && bcis != NULL, "sanity check"); 1662 for (int i = 0; i < methods->length(); i++) { 1663 if (methods->obj_at(i) == NULL) break; 1664 depth++; 1665 } 1666 } 1667 return depth; 1668 } 1669 1670 1671 oop java_lang_Throwable::get_stack_trace_element(oop throwable, int index, TRAPS) { 1672 if (throwable == NULL) { 1673 THROW_0(vmSymbols::java_lang_NullPointerException()); 1674 } 1675 if (index < 0) { 1676 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); 1677 } 1678 // Compute how many chunks to skip and index into actual chunk 1679 objArrayOop chunk = objArrayOop(backtrace(throwable)); 1680 int skip_chunks = index / trace_chunk_size; 1681 int chunk_index = index % trace_chunk_size; 1682 while (chunk != NULL && skip_chunks > 0) { 1683 chunk = objArrayOop(chunk->obj_at(trace_next_offset)); 1684 skip_chunks--; 1685 } 1686 if (chunk == NULL) { 1687 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); 1688 } 1689 // Get method,bci from chunk 1690 objArrayOop methods = objArrayOop(chunk->obj_at(trace_methods_offset)); 1691 typeArrayOop bcis = typeArrayOop(chunk->obj_at(trace_bcis_offset)); 1692 assert(methods != NULL && bcis != NULL, "sanity check"); 1693 methodHandle method(THREAD, methodOop(methods->obj_at(chunk_index))); 1694 int bci = bcis->ushort_at(chunk_index); 1695 // Chunk can be partial full 1696 if (method.is_null()) { 1697 THROW_(vmSymbols::java_lang_IndexOutOfBoundsException(), NULL); 1698 } 1699 1700 oop element = java_lang_StackTraceElement::create(method, bci, CHECK_0); 1701 return element; 1702 } 1703 1704 oop java_lang_StackTraceElement::create(methodHandle method, int bci, TRAPS) { 1705 // SystemDictionary::stackTraceElement_klass() will be null for pre-1.4 JDKs 1706 assert(JDK_Version::is_gte_jdk14x_version(), "should only be called in >= 1.4"); 1707 1708 // Allocate java.lang.StackTraceElement instance 1709 klassOop k = SystemDictionary::StackTraceElement_klass(); 1710 assert(k != NULL, "must be loaded in 1.4+"); 1711 instanceKlassHandle ik (THREAD, k); 1712 if (ik->should_be_initialized()) { 1713 ik->initialize(CHECK_0); 1714 } 1715 1716 Handle element = ik->allocate_instance_handle(CHECK_0); 1717 // Fill in class name 1718 ResourceMark rm(THREAD); 1719 const char* str = instanceKlass::cast(method->method_holder())->external_name(); 1720 oop classname = StringTable::intern((char*) str, CHECK_0); 1721 java_lang_StackTraceElement::set_declaringClass(element(), classname); 1722 // Fill in method name 1723 oop methodname = StringTable::intern(method->name(), CHECK_0); 1724 java_lang_StackTraceElement::set_methodName(element(), methodname); 1725 // Fill in source file name 1726 Symbol* source = instanceKlass::cast(method->method_holder())->source_file_name(); 1727 oop filename = StringTable::intern(source, CHECK_0); 1728 java_lang_StackTraceElement::set_fileName(element(), filename); 1729 // File in source line number 1730 int line_number; 1731 if (method->is_native()) { 1732 // Negative value different from -1 below, enabling Java code in 1733 // class java.lang.StackTraceElement to distinguish "native" from 1734 // "no LineNumberTable". 1735 line_number = -2; 1736 } else { 1737 // Returns -1 if no LineNumberTable, and otherwise actual line number 1738 line_number = method->line_number_from_bci(bci); 1739 } 1740 java_lang_StackTraceElement::set_lineNumber(element(), line_number); 1741 1742 return element(); 1743 } 1744 1745 1746 void java_lang_reflect_AccessibleObject::compute_offsets() { 1747 klassOop k = SystemDictionary::reflect_AccessibleObject_klass(); 1748 compute_offset(override_offset, k, vmSymbols::override_name(), vmSymbols::bool_signature()); 1749 } 1750 1751 jboolean java_lang_reflect_AccessibleObject::override(oop reflect) { 1752 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1753 return (jboolean) reflect->bool_field(override_offset); 1754 } 1755 1756 void java_lang_reflect_AccessibleObject::set_override(oop reflect, jboolean value) { 1757 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1758 reflect->bool_field_put(override_offset, (int) value); 1759 } 1760 1761 void java_lang_reflect_Method::compute_offsets() { 1762 klassOop k = SystemDictionary::reflect_Method_klass(); 1763 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); 1764 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); 1765 compute_offset(returnType_offset, k, vmSymbols::returnType_name(), vmSymbols::class_signature()); 1766 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); 1767 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); 1768 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); 1769 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); 1770 // The generic signature and annotations fields are only present in 1.5 1771 signature_offset = -1; 1772 annotations_offset = -1; 1773 parameter_annotations_offset = -1; 1774 annotation_default_offset = -1; 1775 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); 1776 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); 1777 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); 1778 compute_optional_offset(annotation_default_offset, k, vmSymbols::annotation_default_name(), vmSymbols::byte_array_signature()); 1779 } 1780 1781 Handle java_lang_reflect_Method::create(TRAPS) { 1782 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1783 klassOop klass = SystemDictionary::reflect_Method_klass(); 1784 // This class is eagerly initialized during VM initialization, since we keep a refence 1785 // to one of the methods 1786 assert(instanceKlass::cast(klass)->is_initialized(), "must be initialized"); 1787 return instanceKlass::cast(klass)->allocate_instance_handle(CHECK_NH); 1788 } 1789 1790 oop java_lang_reflect_Method::clazz(oop reflect) { 1791 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1792 return reflect->obj_field(clazz_offset); 1793 } 1794 1795 void java_lang_reflect_Method::set_clazz(oop reflect, oop value) { 1796 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1797 reflect->obj_field_put(clazz_offset, value); 1798 } 1799 1800 int java_lang_reflect_Method::slot(oop reflect) { 1801 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1802 return reflect->int_field(slot_offset); 1803 } 1804 1805 void java_lang_reflect_Method::set_slot(oop reflect, int value) { 1806 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1807 reflect->int_field_put(slot_offset, value); 1808 } 1809 1810 oop java_lang_reflect_Method::name(oop method) { 1811 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1812 return method->obj_field(name_offset); 1813 } 1814 1815 void java_lang_reflect_Method::set_name(oop method, oop value) { 1816 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1817 method->obj_field_put(name_offset, value); 1818 } 1819 1820 oop java_lang_reflect_Method::return_type(oop method) { 1821 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1822 return method->obj_field(returnType_offset); 1823 } 1824 1825 void java_lang_reflect_Method::set_return_type(oop method, oop value) { 1826 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1827 method->obj_field_put(returnType_offset, value); 1828 } 1829 1830 oop java_lang_reflect_Method::parameter_types(oop method) { 1831 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1832 return method->obj_field(parameterTypes_offset); 1833 } 1834 1835 void java_lang_reflect_Method::set_parameter_types(oop method, oop value) { 1836 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1837 method->obj_field_put(parameterTypes_offset, value); 1838 } 1839 1840 oop java_lang_reflect_Method::exception_types(oop method) { 1841 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1842 return method->obj_field(exceptionTypes_offset); 1843 } 1844 1845 void java_lang_reflect_Method::set_exception_types(oop method, oop value) { 1846 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1847 method->obj_field_put(exceptionTypes_offset, value); 1848 } 1849 1850 int java_lang_reflect_Method::modifiers(oop method) { 1851 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1852 return method->int_field(modifiers_offset); 1853 } 1854 1855 void java_lang_reflect_Method::set_modifiers(oop method, int value) { 1856 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1857 method->int_field_put(modifiers_offset, value); 1858 } 1859 1860 bool java_lang_reflect_Method::has_signature_field() { 1861 return (signature_offset >= 0); 1862 } 1863 1864 oop java_lang_reflect_Method::signature(oop method) { 1865 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1866 assert(has_signature_field(), "signature field must be present"); 1867 return method->obj_field(signature_offset); 1868 } 1869 1870 void java_lang_reflect_Method::set_signature(oop method, oop value) { 1871 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1872 assert(has_signature_field(), "signature field must be present"); 1873 method->obj_field_put(signature_offset, value); 1874 } 1875 1876 bool java_lang_reflect_Method::has_annotations_field() { 1877 return (annotations_offset >= 0); 1878 } 1879 1880 oop java_lang_reflect_Method::annotations(oop method) { 1881 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1882 assert(has_annotations_field(), "annotations field must be present"); 1883 return method->obj_field(annotations_offset); 1884 } 1885 1886 void java_lang_reflect_Method::set_annotations(oop method, oop value) { 1887 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1888 assert(has_annotations_field(), "annotations field must be present"); 1889 method->obj_field_put(annotations_offset, value); 1890 } 1891 1892 bool java_lang_reflect_Method::has_parameter_annotations_field() { 1893 return (parameter_annotations_offset >= 0); 1894 } 1895 1896 oop java_lang_reflect_Method::parameter_annotations(oop method) { 1897 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1898 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); 1899 return method->obj_field(parameter_annotations_offset); 1900 } 1901 1902 void java_lang_reflect_Method::set_parameter_annotations(oop method, oop value) { 1903 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1904 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); 1905 method->obj_field_put(parameter_annotations_offset, value); 1906 } 1907 1908 bool java_lang_reflect_Method::has_annotation_default_field() { 1909 return (annotation_default_offset >= 0); 1910 } 1911 1912 oop java_lang_reflect_Method::annotation_default(oop method) { 1913 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1914 assert(has_annotation_default_field(), "annotation default field must be present"); 1915 return method->obj_field(annotation_default_offset); 1916 } 1917 1918 void java_lang_reflect_Method::set_annotation_default(oop method, oop value) { 1919 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1920 assert(has_annotation_default_field(), "annotation default field must be present"); 1921 method->obj_field_put(annotation_default_offset, value); 1922 } 1923 1924 void java_lang_reflect_Constructor::compute_offsets() { 1925 klassOop k = SystemDictionary::reflect_Constructor_klass(); 1926 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); 1927 compute_offset(parameterTypes_offset, k, vmSymbols::parameterTypes_name(), vmSymbols::class_array_signature()); 1928 compute_offset(exceptionTypes_offset, k, vmSymbols::exceptionTypes_name(), vmSymbols::class_array_signature()); 1929 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); 1930 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); 1931 // The generic signature and annotations fields are only present in 1.5 1932 signature_offset = -1; 1933 annotations_offset = -1; 1934 parameter_annotations_offset = -1; 1935 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); 1936 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); 1937 compute_optional_offset(parameter_annotations_offset, k, vmSymbols::parameter_annotations_name(), vmSymbols::byte_array_signature()); 1938 } 1939 1940 Handle java_lang_reflect_Constructor::create(TRAPS) { 1941 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1942 Symbol* name = vmSymbols::java_lang_reflect_Constructor(); 1943 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); 1944 instanceKlassHandle klass (THREAD, k); 1945 // Ensure it is initialized 1946 klass->initialize(CHECK_NH); 1947 return klass->allocate_instance_handle(CHECK_NH); 1948 } 1949 1950 oop java_lang_reflect_Constructor::clazz(oop reflect) { 1951 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1952 return reflect->obj_field(clazz_offset); 1953 } 1954 1955 void java_lang_reflect_Constructor::set_clazz(oop reflect, oop value) { 1956 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1957 reflect->obj_field_put(clazz_offset, value); 1958 } 1959 1960 oop java_lang_reflect_Constructor::parameter_types(oop constructor) { 1961 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1962 return constructor->obj_field(parameterTypes_offset); 1963 } 1964 1965 void java_lang_reflect_Constructor::set_parameter_types(oop constructor, oop value) { 1966 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1967 constructor->obj_field_put(parameterTypes_offset, value); 1968 } 1969 1970 oop java_lang_reflect_Constructor::exception_types(oop constructor) { 1971 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1972 return constructor->obj_field(exceptionTypes_offset); 1973 } 1974 1975 void java_lang_reflect_Constructor::set_exception_types(oop constructor, oop value) { 1976 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1977 constructor->obj_field_put(exceptionTypes_offset, value); 1978 } 1979 1980 int java_lang_reflect_Constructor::slot(oop reflect) { 1981 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1982 return reflect->int_field(slot_offset); 1983 } 1984 1985 void java_lang_reflect_Constructor::set_slot(oop reflect, int value) { 1986 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1987 reflect->int_field_put(slot_offset, value); 1988 } 1989 1990 int java_lang_reflect_Constructor::modifiers(oop constructor) { 1991 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1992 return constructor->int_field(modifiers_offset); 1993 } 1994 1995 void java_lang_reflect_Constructor::set_modifiers(oop constructor, int value) { 1996 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 1997 constructor->int_field_put(modifiers_offset, value); 1998 } 1999 2000 bool java_lang_reflect_Constructor::has_signature_field() { 2001 return (signature_offset >= 0); 2002 } 2003 2004 oop java_lang_reflect_Constructor::signature(oop constructor) { 2005 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2006 assert(has_signature_field(), "signature field must be present"); 2007 return constructor->obj_field(signature_offset); 2008 } 2009 2010 void java_lang_reflect_Constructor::set_signature(oop constructor, oop value) { 2011 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2012 assert(has_signature_field(), "signature field must be present"); 2013 constructor->obj_field_put(signature_offset, value); 2014 } 2015 2016 bool java_lang_reflect_Constructor::has_annotations_field() { 2017 return (annotations_offset >= 0); 2018 } 2019 2020 oop java_lang_reflect_Constructor::annotations(oop constructor) { 2021 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2022 assert(has_annotations_field(), "annotations field must be present"); 2023 return constructor->obj_field(annotations_offset); 2024 } 2025 2026 void java_lang_reflect_Constructor::set_annotations(oop constructor, oop value) { 2027 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2028 assert(has_annotations_field(), "annotations field must be present"); 2029 constructor->obj_field_put(annotations_offset, value); 2030 } 2031 2032 bool java_lang_reflect_Constructor::has_parameter_annotations_field() { 2033 return (parameter_annotations_offset >= 0); 2034 } 2035 2036 oop java_lang_reflect_Constructor::parameter_annotations(oop method) { 2037 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2038 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); 2039 return method->obj_field(parameter_annotations_offset); 2040 } 2041 2042 void java_lang_reflect_Constructor::set_parameter_annotations(oop method, oop value) { 2043 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2044 assert(has_parameter_annotations_field(), "parameter annotations field must be present"); 2045 method->obj_field_put(parameter_annotations_offset, value); 2046 } 2047 2048 void java_lang_reflect_Field::compute_offsets() { 2049 klassOop k = SystemDictionary::reflect_Field_klass(); 2050 compute_offset(clazz_offset, k, vmSymbols::clazz_name(), vmSymbols::class_signature()); 2051 compute_offset(name_offset, k, vmSymbols::name_name(), vmSymbols::string_signature()); 2052 compute_offset(type_offset, k, vmSymbols::type_name(), vmSymbols::class_signature()); 2053 compute_offset(slot_offset, k, vmSymbols::slot_name(), vmSymbols::int_signature()); 2054 compute_offset(modifiers_offset, k, vmSymbols::modifiers_name(), vmSymbols::int_signature()); 2055 // The generic signature and annotations fields are only present in 1.5 2056 signature_offset = -1; 2057 annotations_offset = -1; 2058 compute_optional_offset(signature_offset, k, vmSymbols::signature_name(), vmSymbols::string_signature()); 2059 compute_optional_offset(annotations_offset, k, vmSymbols::annotations_name(), vmSymbols::byte_array_signature()); 2060 } 2061 2062 Handle java_lang_reflect_Field::create(TRAPS) { 2063 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2064 Symbol* name = vmSymbols::java_lang_reflect_Field(); 2065 klassOop k = SystemDictionary::resolve_or_fail(name, true, CHECK_NH); 2066 instanceKlassHandle klass (THREAD, k); 2067 // Ensure it is initialized 2068 klass->initialize(CHECK_NH); 2069 return klass->allocate_instance_handle(CHECK_NH); 2070 } 2071 2072 oop java_lang_reflect_Field::clazz(oop reflect) { 2073 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2074 return reflect->obj_field(clazz_offset); 2075 } 2076 2077 void java_lang_reflect_Field::set_clazz(oop reflect, oop value) { 2078 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2079 reflect->obj_field_put(clazz_offset, value); 2080 } 2081 2082 oop java_lang_reflect_Field::name(oop field) { 2083 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2084 return field->obj_field(name_offset); 2085 } 2086 2087 void java_lang_reflect_Field::set_name(oop field, oop value) { 2088 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2089 field->obj_field_put(name_offset, value); 2090 } 2091 2092 oop java_lang_reflect_Field::type(oop field) { 2093 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2094 return field->obj_field(type_offset); 2095 } 2096 2097 void java_lang_reflect_Field::set_type(oop field, oop value) { 2098 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2099 field->obj_field_put(type_offset, value); 2100 } 2101 2102 int java_lang_reflect_Field::slot(oop reflect) { 2103 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2104 return reflect->int_field(slot_offset); 2105 } 2106 2107 void java_lang_reflect_Field::set_slot(oop reflect, int value) { 2108 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2109 reflect->int_field_put(slot_offset, value); 2110 } 2111 2112 int java_lang_reflect_Field::modifiers(oop field) { 2113 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2114 return field->int_field(modifiers_offset); 2115 } 2116 2117 void java_lang_reflect_Field::set_modifiers(oop field, int value) { 2118 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2119 field->int_field_put(modifiers_offset, value); 2120 } 2121 2122 bool java_lang_reflect_Field::has_signature_field() { 2123 return (signature_offset >= 0); 2124 } 2125 2126 oop java_lang_reflect_Field::signature(oop field) { 2127 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2128 assert(has_signature_field(), "signature field must be present"); 2129 return field->obj_field(signature_offset); 2130 } 2131 2132 void java_lang_reflect_Field::set_signature(oop field, oop value) { 2133 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2134 assert(has_signature_field(), "signature field must be present"); 2135 field->obj_field_put(signature_offset, value); 2136 } 2137 2138 bool java_lang_reflect_Field::has_annotations_field() { 2139 return (annotations_offset >= 0); 2140 } 2141 2142 oop java_lang_reflect_Field::annotations(oop field) { 2143 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2144 assert(has_annotations_field(), "annotations field must be present"); 2145 return field->obj_field(annotations_offset); 2146 } 2147 2148 void java_lang_reflect_Field::set_annotations(oop field, oop value) { 2149 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2150 assert(has_annotations_field(), "annotations field must be present"); 2151 field->obj_field_put(annotations_offset, value); 2152 } 2153 2154 2155 void sun_reflect_ConstantPool::compute_offsets() { 2156 klassOop k = SystemDictionary::reflect_ConstantPool_klass(); 2157 // This null test can be removed post beta 2158 if (k != NULL) { 2159 compute_offset(_cp_oop_offset, k, vmSymbols::constantPoolOop_name(), vmSymbols::object_signature()); 2160 } 2161 } 2162 2163 2164 Handle sun_reflect_ConstantPool::create(TRAPS) { 2165 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2166 klassOop k = SystemDictionary::reflect_ConstantPool_klass(); 2167 instanceKlassHandle klass (THREAD, k); 2168 // Ensure it is initialized 2169 klass->initialize(CHECK_NH); 2170 return klass->allocate_instance_handle(CHECK_NH); 2171 } 2172 2173 2174 oop sun_reflect_ConstantPool::cp_oop(oop reflect) { 2175 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2176 return reflect->obj_field(_cp_oop_offset); 2177 } 2178 2179 2180 void sun_reflect_ConstantPool::set_cp_oop(oop reflect, oop value) { 2181 assert(Universe::is_fully_initialized(), "Need to find another solution to the reflection problem"); 2182 reflect->obj_field_put(_cp_oop_offset, value); 2183 } 2184 2185 void sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets() { 2186 klassOop k = SystemDictionary::reflect_UnsafeStaticFieldAccessorImpl_klass(); 2187 // This null test can be removed post beta 2188 if (k != NULL) { 2189 compute_offset(_base_offset, k, 2190 vmSymbols::base_name(), vmSymbols::object_signature()); 2191 } 2192 } 2193 2194 oop java_lang_boxing_object::initialize_and_allocate(BasicType type, TRAPS) { 2195 klassOop k = SystemDictionary::box_klass(type); 2196 if (k == NULL) return NULL; 2197 instanceKlassHandle h (THREAD, k); 2198 if (!h->is_initialized()) h->initialize(CHECK_0); 2199 return h->allocate_instance(THREAD); 2200 } 2201 2202 2203 oop java_lang_boxing_object::create(BasicType type, jvalue* value, TRAPS) { 2204 oop box = initialize_and_allocate(type, CHECK_0); 2205 if (box == NULL) return NULL; 2206 switch (type) { 2207 case T_BOOLEAN: 2208 box->bool_field_put(value_offset, value->z); 2209 break; 2210 case T_CHAR: 2211 box->char_field_put(value_offset, value->c); 2212 break; 2213 case T_FLOAT: 2214 box->float_field_put(value_offset, value->f); 2215 break; 2216 case T_DOUBLE: 2217 box->double_field_put(long_value_offset, value->d); 2218 break; 2219 case T_BYTE: 2220 box->byte_field_put(value_offset, value->b); 2221 break; 2222 case T_SHORT: 2223 box->short_field_put(value_offset, value->s); 2224 break; 2225 case T_INT: 2226 box->int_field_put(value_offset, value->i); 2227 break; 2228 case T_LONG: 2229 box->long_field_put(long_value_offset, value->j); 2230 break; 2231 default: 2232 return NULL; 2233 } 2234 return box; 2235 } 2236 2237 2238 BasicType java_lang_boxing_object::basic_type(oop box) { 2239 if (box == NULL) return T_ILLEGAL; 2240 BasicType type = SystemDictionary::box_klass_type(box->klass()); 2241 if (type == T_OBJECT) // 'unknown' value returned by SD::bkt 2242 return T_ILLEGAL; 2243 return type; 2244 } 2245 2246 2247 BasicType java_lang_boxing_object::get_value(oop box, jvalue* value) { 2248 BasicType type = SystemDictionary::box_klass_type(box->klass()); 2249 switch (type) { 2250 case T_BOOLEAN: 2251 value->z = box->bool_field(value_offset); 2252 break; 2253 case T_CHAR: 2254 value->c = box->char_field(value_offset); 2255 break; 2256 case T_FLOAT: 2257 value->f = box->float_field(value_offset); 2258 break; 2259 case T_DOUBLE: 2260 value->d = box->double_field(long_value_offset); 2261 break; 2262 case T_BYTE: 2263 value->b = box->byte_field(value_offset); 2264 break; 2265 case T_SHORT: 2266 value->s = box->short_field(value_offset); 2267 break; 2268 case T_INT: 2269 value->i = box->int_field(value_offset); 2270 break; 2271 case T_LONG: 2272 value->j = box->long_field(long_value_offset); 2273 break; 2274 default: 2275 return T_ILLEGAL; 2276 } // end switch 2277 return type; 2278 } 2279 2280 2281 BasicType java_lang_boxing_object::set_value(oop box, jvalue* value) { 2282 BasicType type = SystemDictionary::box_klass_type(box->klass()); 2283 switch (type) { 2284 case T_BOOLEAN: 2285 box->bool_field_put(value_offset, value->z); 2286 break; 2287 case T_CHAR: 2288 box->char_field_put(value_offset, value->c); 2289 break; 2290 case T_FLOAT: 2291 box->float_field_put(value_offset, value->f); 2292 break; 2293 case T_DOUBLE: 2294 box->double_field_put(long_value_offset, value->d); 2295 break; 2296 case T_BYTE: 2297 box->byte_field_put(value_offset, value->b); 2298 break; 2299 case T_SHORT: 2300 box->short_field_put(value_offset, value->s); 2301 break; 2302 case T_INT: 2303 box->int_field_put(value_offset, value->i); 2304 break; 2305 case T_LONG: 2306 box->long_field_put(long_value_offset, value->j); 2307 break; 2308 default: 2309 return T_ILLEGAL; 2310 } // end switch 2311 return type; 2312 } 2313 2314 2315 void java_lang_boxing_object::print(BasicType type, jvalue* value, outputStream* st) { 2316 switch (type) { 2317 case T_BOOLEAN: st->print("%s", value->z ? "true" : "false"); break; 2318 case T_CHAR: st->print("%d", value->c); break; 2319 case T_BYTE: st->print("%d", value->b); break; 2320 case T_SHORT: st->print("%d", value->s); break; 2321 case T_INT: st->print("%d", value->i); break; 2322 case T_LONG: st->print(INT64_FORMAT, value->j); break; 2323 case T_FLOAT: st->print("%f", value->f); break; 2324 case T_DOUBLE: st->print("%lf", value->d); break; 2325 default: st->print("type %d?", type); break; 2326 } 2327 } 2328 2329 2330 // Support for java_lang_ref_Reference 2331 oop java_lang_ref_Reference::pending_list_lock() { 2332 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass()); 2333 address addr = ik->static_field_addr(static_lock_offset); 2334 if (UseCompressedOops) { 2335 return oopDesc::load_decode_heap_oop((narrowOop *)addr); 2336 } else { 2337 return oopDesc::load_decode_heap_oop((oop*)addr); 2338 } 2339 } 2340 2341 HeapWord *java_lang_ref_Reference::pending_list_addr() { 2342 instanceKlass* ik = instanceKlass::cast(SystemDictionary::Reference_klass()); 2343 address addr = ik->static_field_addr(static_pending_offset); 2344 // XXX This might not be HeapWord aligned, almost rather be char *. 2345 return (HeapWord*)addr; 2346 } 2347 2348 oop java_lang_ref_Reference::pending_list() { 2349 char *addr = (char *)pending_list_addr(); 2350 if (UseCompressedOops) { 2351 return oopDesc::load_decode_heap_oop((narrowOop *)addr); 2352 } else { 2353 return oopDesc::load_decode_heap_oop((oop*)addr); 2354 } 2355 } 2356 2357 2358 // Support for java_lang_ref_SoftReference 2359 2360 jlong java_lang_ref_SoftReference::timestamp(oop ref) { 2361 return ref->long_field(timestamp_offset); 2362 } 2363 2364 jlong java_lang_ref_SoftReference::clock() { 2365 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass()); 2366 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset); 2367 return *offset; 2368 } 2369 2370 void java_lang_ref_SoftReference::set_clock(jlong value) { 2371 instanceKlass* ik = instanceKlass::cast(SystemDictionary::SoftReference_klass()); 2372 jlong* offset = (jlong*)ik->static_field_addr(static_clock_offset); 2373 *offset = value; 2374 } 2375 2376 2377 // Support for java_lang_invoke_MethodHandle 2378 2379 int java_lang_invoke_MethodHandle::_type_offset; 2380 int java_lang_invoke_MethodHandle::_vmtarget_offset; 2381 int java_lang_invoke_MethodHandle::_vmentry_offset; 2382 2383 int java_lang_invoke_MemberName::_clazz_offset; 2384 int java_lang_invoke_MemberName::_name_offset; 2385 int java_lang_invoke_MemberName::_type_offset; 2386 int java_lang_invoke_MemberName::_flags_offset; 2387 int java_lang_invoke_MemberName::_vmtarget_offset; 2388 int java_lang_invoke_MemberName::_vmindex_offset; 2389 2390 int java_lang_invoke_DirectMethodHandle::_vmindex_offset; 2391 2392 int java_lang_invoke_BoundMethodHandle::_argument_offset; 2393 int java_lang_invoke_BoundMethodHandle::_vmargslot_offset; 2394 2395 int java_lang_invoke_AdapterMethodHandle::_conversion_offset; 2396 2397 int java_lang_invoke_CountingMethodHandle::_vmcount_offset; 2398 2399 void java_lang_invoke_MethodHandle::compute_offsets() { 2400 klassOop klass_oop = SystemDictionary::MethodHandle_klass(); 2401 if (klass_oop != NULL && EnableInvokeDynamic) { 2402 bool allow_super = false; 2403 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::java_lang_invoke_MethodType_signature(), allow_super); 2404 METHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 2405 } 2406 } 2407 2408 void java_lang_invoke_MemberName::compute_offsets() { 2409 klassOop klass_oop = SystemDictionary::MemberName_klass(); 2410 if (klass_oop != NULL && EnableInvokeDynamic) { 2411 compute_offset(_clazz_offset, klass_oop, vmSymbols::clazz_name(), vmSymbols::class_signature()); 2412 compute_offset(_name_offset, klass_oop, vmSymbols::name_name(), vmSymbols::string_signature()); 2413 compute_offset(_type_offset, klass_oop, vmSymbols::type_name(), vmSymbols::object_signature()); 2414 compute_offset(_flags_offset, klass_oop, vmSymbols::flags_name(), vmSymbols::int_signature()); 2415 compute_offset(_vmindex_offset, klass_oop, vmSymbols::vmindex_name(), vmSymbols::int_signature()); 2416 MEMBERNAME_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 2417 } 2418 } 2419 2420 void java_lang_invoke_DirectMethodHandle::compute_offsets() { 2421 klassOop k = SystemDictionary::DirectMethodHandle_klass(); 2422 if (k != NULL && EnableInvokeDynamic) { 2423 DIRECTMETHODHANDLE_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 2424 } 2425 } 2426 2427 void java_lang_invoke_BoundMethodHandle::compute_offsets() { 2428 klassOop k = SystemDictionary::BoundMethodHandle_klass(); 2429 if (k != NULL && EnableInvokeDynamic) { 2430 compute_offset(_vmargslot_offset, k, vmSymbols::vmargslot_name(), vmSymbols::int_signature(), true); 2431 compute_offset(_argument_offset, k, vmSymbols::argument_name(), vmSymbols::object_signature(), true); 2432 } 2433 } 2434 2435 void java_lang_invoke_AdapterMethodHandle::compute_offsets() { 2436 klassOop k = SystemDictionary::AdapterMethodHandle_klass(); 2437 if (k != NULL && EnableInvokeDynamic) { 2438 compute_offset(_conversion_offset, k, vmSymbols::conversion_name(), vmSymbols::int_signature(), true); 2439 } 2440 } 2441 2442 void java_lang_invoke_CountingMethodHandle::compute_offsets() { 2443 klassOop k = SystemDictionary::CountingMethodHandle_klass(); 2444 if (k != NULL && EnableInvokeDynamic) { 2445 compute_offset(_vmcount_offset, k, vmSymbols::vmcount_name(), vmSymbols::int_signature(), true); 2446 } 2447 } 2448 2449 int java_lang_invoke_CountingMethodHandle::vmcount(oop mh) { 2450 assert(is_instance(mh), "CMH only"); 2451 return mh->int_field(_vmcount_offset); 2452 } 2453 2454 void java_lang_invoke_CountingMethodHandle::set_vmcount(oop mh, int count) { 2455 assert(is_instance(mh), "CMH only"); 2456 mh->int_field_put(_vmcount_offset, count); 2457 } 2458 2459 oop java_lang_invoke_MethodHandle::type(oop mh) { 2460 return mh->obj_field(_type_offset); 2461 } 2462 2463 void java_lang_invoke_MethodHandle::set_type(oop mh, oop mtype) { 2464 mh->obj_field_put(_type_offset, mtype); 2465 } 2466 2467 // fetch type.form.vmslots, which is the number of JVM stack slots 2468 // required to carry the arguments of this MH 2469 int java_lang_invoke_MethodHandle::vmslots(oop mh) { 2470 oop mtype = type(mh); 2471 if (mtype == NULL) return 0; // Java code would get NPE 2472 oop form = java_lang_invoke_MethodType::form(mtype); 2473 if (form == NULL) return 0; // Java code would get NPE 2474 return java_lang_invoke_MethodTypeForm::vmslots(form); 2475 } 2476 2477 // fetch the low-level entry point for this mh 2478 MethodHandleEntry* java_lang_invoke_MethodHandle::vmentry(oop mh) { 2479 return (MethodHandleEntry*) mh->address_field(_vmentry_offset); 2480 } 2481 2482 void java_lang_invoke_MethodHandle::set_vmentry(oop mh, MethodHandleEntry* me) { 2483 assert(_vmentry_offset != 0, "must be present"); 2484 2485 // This is always the final step that initializes a valid method handle: 2486 mh->release_address_field_put(_vmentry_offset, (address) me); 2487 2488 // There should be enough memory barriers on exit from native methods 2489 // to ensure that the MH is fully initialized to all threads before 2490 // Java code can publish it in global data structures. 2491 // But just in case, we use release_address_field_put. 2492 } 2493 2494 /// MemberName accessors 2495 2496 oop java_lang_invoke_MemberName::clazz(oop mname) { 2497 assert(is_instance(mname), "wrong type"); 2498 return mname->obj_field(_clazz_offset); 2499 } 2500 2501 void java_lang_invoke_MemberName::set_clazz(oop mname, oop clazz) { 2502 assert(is_instance(mname), "wrong type"); 2503 mname->obj_field_put(_clazz_offset, clazz); 2504 } 2505 2506 oop java_lang_invoke_MemberName::name(oop mname) { 2507 assert(is_instance(mname), "wrong type"); 2508 return mname->obj_field(_name_offset); 2509 } 2510 2511 void java_lang_invoke_MemberName::set_name(oop mname, oop name) { 2512 assert(is_instance(mname), "wrong type"); 2513 mname->obj_field_put(_name_offset, name); 2514 } 2515 2516 oop java_lang_invoke_MemberName::type(oop mname) { 2517 assert(is_instance(mname), "wrong type"); 2518 return mname->obj_field(_type_offset); 2519 } 2520 2521 void java_lang_invoke_MemberName::set_type(oop mname, oop type) { 2522 assert(is_instance(mname), "wrong type"); 2523 mname->obj_field_put(_type_offset, type); 2524 } 2525 2526 int java_lang_invoke_MemberName::flags(oop mname) { 2527 assert(is_instance(mname), "wrong type"); 2528 return mname->int_field(_flags_offset); 2529 } 2530 2531 void java_lang_invoke_MemberName::set_flags(oop mname, int flags) { 2532 assert(is_instance(mname), "wrong type"); 2533 mname->int_field_put(_flags_offset, flags); 2534 } 2535 2536 oop java_lang_invoke_MemberName::vmtarget(oop mname) { 2537 assert(is_instance(mname), "wrong type"); 2538 return mname->obj_field(_vmtarget_offset); 2539 } 2540 2541 void java_lang_invoke_MemberName::set_vmtarget(oop mname, oop ref) { 2542 assert(is_instance(mname), "wrong type"); 2543 mname->obj_field_put(_vmtarget_offset, ref); 2544 } 2545 2546 int java_lang_invoke_MemberName::vmindex(oop mname) { 2547 assert(is_instance(mname), "wrong type"); 2548 return mname->int_field(_vmindex_offset); 2549 } 2550 2551 void java_lang_invoke_MemberName::set_vmindex(oop mname, int index) { 2552 assert(is_instance(mname), "wrong type"); 2553 mname->int_field_put(_vmindex_offset, index); 2554 } 2555 2556 oop java_lang_invoke_MethodHandle::vmtarget(oop mh) { 2557 assert(is_instance(mh), "MH only"); 2558 return mh->obj_field(_vmtarget_offset); 2559 } 2560 2561 void java_lang_invoke_MethodHandle::set_vmtarget(oop mh, oop ref) { 2562 assert(is_instance(mh), "MH only"); 2563 mh->obj_field_put(_vmtarget_offset, ref); 2564 } 2565 2566 int java_lang_invoke_DirectMethodHandle::vmindex(oop mh) { 2567 assert(is_instance(mh), "DMH only"); 2568 return mh->int_field(_vmindex_offset); 2569 } 2570 2571 void java_lang_invoke_DirectMethodHandle::set_vmindex(oop mh, int index) { 2572 assert(is_instance(mh), "DMH only"); 2573 mh->int_field_put(_vmindex_offset, index); 2574 } 2575 2576 int java_lang_invoke_BoundMethodHandle::vmargslot(oop mh) { 2577 assert(is_instance(mh), "BMH only"); 2578 return mh->int_field(_vmargslot_offset); 2579 } 2580 2581 oop java_lang_invoke_BoundMethodHandle::argument(oop mh) { 2582 assert(is_instance(mh), "BMH only"); 2583 return mh->obj_field(_argument_offset); 2584 } 2585 2586 int java_lang_invoke_AdapterMethodHandle::conversion(oop mh) { 2587 assert(is_instance(mh), "AMH only"); 2588 return mh->int_field(_conversion_offset); 2589 } 2590 2591 void java_lang_invoke_AdapterMethodHandle::set_conversion(oop mh, int conv) { 2592 assert(is_instance(mh), "AMH only"); 2593 mh->int_field_put(_conversion_offset, conv); 2594 } 2595 2596 2597 // Support for java_lang_invoke_MethodType 2598 2599 int java_lang_invoke_MethodType::_rtype_offset; 2600 int java_lang_invoke_MethodType::_ptypes_offset; 2601 int java_lang_invoke_MethodType::_form_offset; 2602 2603 void java_lang_invoke_MethodType::compute_offsets() { 2604 klassOop k = SystemDictionary::MethodType_klass(); 2605 if (k != NULL) { 2606 compute_offset(_rtype_offset, k, vmSymbols::rtype_name(), vmSymbols::class_signature()); 2607 compute_offset(_ptypes_offset, k, vmSymbols::ptypes_name(), vmSymbols::class_array_signature()); 2608 compute_offset(_form_offset, k, vmSymbols::form_name(), vmSymbols::java_lang_invoke_MethodTypeForm_signature()); 2609 } 2610 } 2611 2612 void java_lang_invoke_MethodType::print_signature(oop mt, outputStream* st) { 2613 st->print("("); 2614 objArrayOop pts = ptypes(mt); 2615 for (int i = 0, limit = pts->length(); i < limit; i++) { 2616 java_lang_Class::print_signature(pts->obj_at(i), st); 2617 } 2618 st->print(")"); 2619 java_lang_Class::print_signature(rtype(mt), st); 2620 } 2621 2622 Symbol* java_lang_invoke_MethodType::as_signature(oop mt, bool intern_if_not_found, TRAPS) { 2623 ResourceMark rm; 2624 stringStream buffer(128); 2625 print_signature(mt, &buffer); 2626 const char* sigstr = buffer.base(); 2627 int siglen = (int) buffer.size(); 2628 Symbol *name; 2629 if (!intern_if_not_found) { 2630 name = SymbolTable::probe(sigstr, siglen); 2631 } else { 2632 name = SymbolTable::new_symbol(sigstr, siglen, THREAD); 2633 } 2634 return name; 2635 } 2636 2637 bool java_lang_invoke_MethodType::equals(oop mt1, oop mt2) { 2638 if (rtype(mt1) != rtype(mt2)) 2639 return false; 2640 if (ptype_count(mt1) != ptype_count(mt2)) 2641 return false; 2642 for (int i = ptype_count(mt1) - 1; i >= 0; i--) { 2643 if (ptype(mt1, i) != ptype(mt2, i)) 2644 return false; 2645 } 2646 return true; 2647 } 2648 2649 oop java_lang_invoke_MethodType::rtype(oop mt) { 2650 assert(is_instance(mt), "must be a MethodType"); 2651 return mt->obj_field(_rtype_offset); 2652 } 2653 2654 objArrayOop java_lang_invoke_MethodType::ptypes(oop mt) { 2655 assert(is_instance(mt), "must be a MethodType"); 2656 return (objArrayOop) mt->obj_field(_ptypes_offset); 2657 } 2658 2659 oop java_lang_invoke_MethodType::form(oop mt) { 2660 assert(is_instance(mt), "must be a MethodType"); 2661 return mt->obj_field(_form_offset); 2662 } 2663 2664 oop java_lang_invoke_MethodType::ptype(oop mt, int idx) { 2665 return ptypes(mt)->obj_at(idx); 2666 } 2667 2668 int java_lang_invoke_MethodType::ptype_count(oop mt) { 2669 return ptypes(mt)->length(); 2670 } 2671 2672 2673 2674 // Support for java_lang_invoke_MethodTypeForm 2675 2676 int java_lang_invoke_MethodTypeForm::_vmslots_offset; 2677 int java_lang_invoke_MethodTypeForm::_vmlayout_offset; 2678 int java_lang_invoke_MethodTypeForm::_erasedType_offset; 2679 int java_lang_invoke_MethodTypeForm::_genericInvoker_offset; 2680 2681 void java_lang_invoke_MethodTypeForm::compute_offsets() { 2682 klassOop k = SystemDictionary::MethodTypeForm_klass(); 2683 if (k != NULL) { 2684 compute_optional_offset(_vmslots_offset, k, vmSymbols::vmslots_name(), vmSymbols::int_signature(), true); 2685 compute_optional_offset(_vmlayout_offset, k, vmSymbols::vmlayout_name(), vmSymbols::object_signature()); 2686 compute_optional_offset(_erasedType_offset, k, vmSymbols::erasedType_name(), vmSymbols::java_lang_invoke_MethodType_signature(), true); 2687 compute_optional_offset(_genericInvoker_offset, k, vmSymbols::genericInvoker_name(), vmSymbols::java_lang_invoke_MethodHandle_signature(), true); 2688 if (_genericInvoker_offset == 0) _genericInvoker_offset = -1; // set to explicit "empty" value 2689 METHODTYPEFORM_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET); 2690 } 2691 } 2692 2693 int java_lang_invoke_MethodTypeForm::vmslots(oop mtform) { 2694 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only"); 2695 assert(_vmslots_offset > 0, ""); 2696 return mtform->int_field(_vmslots_offset); 2697 } 2698 2699 oop java_lang_invoke_MethodTypeForm::vmlayout(oop mtform) { 2700 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only"); 2701 assert(_vmlayout_offset > 0, ""); 2702 return mtform->obj_field(_vmlayout_offset); 2703 } 2704 2705 oop java_lang_invoke_MethodTypeForm::init_vmlayout(oop mtform, oop cookie) { 2706 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only"); 2707 oop previous = vmlayout(mtform); 2708 if (previous != NULL) { 2709 return previous; // someone else beat us to it 2710 } 2711 HeapWord* cookie_addr = (HeapWord*) mtform->obj_field_addr<oop>(_vmlayout_offset); 2712 OrderAccess::storestore(); // make sure our copy is fully committed 2713 previous = oopDesc::atomic_compare_exchange_oop(cookie, cookie_addr, previous); 2714 if (previous != NULL) { 2715 return previous; // someone else beat us to it 2716 } 2717 return cookie; 2718 } 2719 2720 oop java_lang_invoke_MethodTypeForm::erasedType(oop mtform) { 2721 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only"); 2722 return mtform->obj_field(_erasedType_offset); 2723 } 2724 2725 oop java_lang_invoke_MethodTypeForm::genericInvoker(oop mtform) { 2726 assert(mtform->klass() == SystemDictionary::MethodTypeForm_klass(), "MTForm only"); 2727 return mtform->obj_field(_genericInvoker_offset); 2728 } 2729 2730 2731 // Support for java_lang_invoke_CallSite 2732 2733 int java_lang_invoke_CallSite::_target_offset; 2734 2735 void java_lang_invoke_CallSite::compute_offsets() { 2736 if (!EnableInvokeDynamic) return; 2737 klassOop k = SystemDictionary::CallSite_klass(); 2738 if (k != NULL) { 2739 compute_offset(_target_offset, k, vmSymbols::target_name(), vmSymbols::java_lang_invoke_MethodHandle_signature()); 2740 } 2741 2742 // Disallow compilation of CallSite.setTargetNormal and CallSite.setTargetVolatile 2743 // (For C2: keep this until we have throttling logic for uncommon traps.) 2744 if (k != NULL) { 2745 instanceKlass* ik = instanceKlass::cast(k); 2746 methodOop m_normal = ik->lookup_method(vmSymbols::setTargetNormal_name(), vmSymbols::setTarget_signature()); 2747 methodOop m_volatile = ik->lookup_method(vmSymbols::setTargetVolatile_name(), vmSymbols::setTarget_signature()); 2748 guarantee(m_normal != NULL && m_volatile != NULL, "must exist"); 2749 m_normal->set_not_compilable_quietly(); 2750 m_volatile->set_not_compilable_quietly(); 2751 } 2752 } 2753 2754 2755 // Support for java_security_AccessControlContext 2756 2757 int java_security_AccessControlContext::_context_offset = 0; 2758 int java_security_AccessControlContext::_privilegedContext_offset = 0; 2759 int java_security_AccessControlContext::_isPrivileged_offset = 0; 2760 2761 void java_security_AccessControlContext::compute_offsets() { 2762 assert(_isPrivileged_offset == 0, "offsets should be initialized only once"); 2763 fieldDescriptor fd; 2764 instanceKlass* ik = instanceKlass::cast(SystemDictionary::AccessControlContext_klass()); 2765 2766 if (!ik->find_local_field(vmSymbols::context_name(), vmSymbols::protectiondomain_signature(), &fd)) { 2767 fatal("Invalid layout of java.security.AccessControlContext"); 2768 } 2769 _context_offset = fd.offset(); 2770 2771 if (!ik->find_local_field(vmSymbols::privilegedContext_name(), vmSymbols::accesscontrolcontext_signature(), &fd)) { 2772 fatal("Invalid layout of java.security.AccessControlContext"); 2773 } 2774 _privilegedContext_offset = fd.offset(); 2775 2776 if (!ik->find_local_field(vmSymbols::isPrivileged_name(), vmSymbols::bool_signature(), &fd)) { 2777 fatal("Invalid layout of java.security.AccessControlContext"); 2778 } 2779 _isPrivileged_offset = fd.offset(); 2780 } 2781 2782 2783 oop java_security_AccessControlContext::create(objArrayHandle context, bool isPrivileged, Handle privileged_context, TRAPS) { 2784 assert(_isPrivileged_offset != 0, "offsets should have been initialized"); 2785 // Ensure klass is initialized 2786 instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->initialize(CHECK_0); 2787 // Allocate result 2788 oop result = instanceKlass::cast(SystemDictionary::AccessControlContext_klass())->allocate_instance(CHECK_0); 2789 // Fill in values 2790 result->obj_field_put(_context_offset, context()); 2791 result->obj_field_put(_privilegedContext_offset, privileged_context()); 2792 result->bool_field_put(_isPrivileged_offset, isPrivileged); 2793 return result; 2794 } 2795 2796 2797 // Support for java_lang_ClassLoader 2798 bool java_lang_ClassLoader::offsets_computed = false; 2799 int java_lang_ClassLoader::parallelCapable_offset = -1; 2800 2801 void java_lang_ClassLoader::compute_offsets() { 2802 assert(!offsets_computed, "offsets should be initialized only once"); 2803 offsets_computed = true; 2804 2805 // The field indicating parallelCapable (parallelLockMap) is only present starting in 7, 2806 klassOop k1 = SystemDictionary::ClassLoader_klass(); 2807 compute_optional_offset(parallelCapable_offset, 2808 k1, vmSymbols::parallelCapable_name(), vmSymbols::concurrenthashmap_signature()); 2809 } 2810 2811 oop java_lang_ClassLoader::parent(oop loader) { 2812 assert(loader->is_oop(), "loader must be oop"); 2813 return loader->obj_field(parent_offset); 2814 } 2815 2816 2817 // For class loader classes, parallelCapable defined 2818 // based on non-null field 2819 // Written to by java.lang.ClassLoader, vm only reads this field, doesn't set it 2820 bool java_lang_ClassLoader::parallelCapable(oop class_loader) { 2821 if (!JDK_Version::is_gte_jdk17x_version() 2822 || parallelCapable_offset == -1) { 2823 // Default for backward compatibility is false 2824 return false; 2825 } 2826 return (class_loader->obj_field(parallelCapable_offset) != NULL); 2827 } 2828 2829 bool java_lang_ClassLoader::is_trusted_loader(oop loader) { 2830 // Fix for 4474172; see evaluation for more details 2831 loader = non_reflection_class_loader(loader); 2832 2833 oop cl = SystemDictionary::java_system_loader(); 2834 while(cl != NULL) { 2835 if (cl == loader) return true; 2836 cl = parent(cl); 2837 } 2838 return false; 2839 } 2840 2841 oop java_lang_ClassLoader::non_reflection_class_loader(oop loader) { 2842 if (loader != NULL) { 2843 // See whether this is one of the class loaders associated with 2844 // the generated bytecodes for reflection, and if so, "magically" 2845 // delegate to its parent to prevent class loading from occurring 2846 // in places where applications using reflection didn't expect it. 2847 klassOop delegating_cl_class = SystemDictionary::reflect_DelegatingClassLoader_klass(); 2848 // This might be null in non-1.4 JDKs 2849 if (delegating_cl_class != NULL && loader->is_a(delegating_cl_class)) { 2850 return parent(loader); 2851 } 2852 } 2853 return loader; 2854 } 2855 2856 2857 // Support for java_lang_System 2858 int java_lang_System::in_offset_in_bytes() { 2859 return (instanceMirrorKlass::offset_of_static_fields() + static_in_offset); 2860 } 2861 2862 2863 int java_lang_System::out_offset_in_bytes() { 2864 return (instanceMirrorKlass::offset_of_static_fields() + static_out_offset); 2865 } 2866 2867 2868 int java_lang_System::err_offset_in_bytes() { 2869 return (instanceMirrorKlass::offset_of_static_fields() + static_err_offset); 2870 } 2871 2872 2873 2874 int java_lang_Class::_klass_offset; 2875 int java_lang_Class::_array_klass_offset; 2876 int java_lang_Class::_resolved_constructor_offset; 2877 int java_lang_Class::_oop_size_offset; 2878 int java_lang_Class::_static_oop_field_count_offset; 2879 int java_lang_Throwable::backtrace_offset; 2880 int java_lang_Throwable::detailMessage_offset; 2881 int java_lang_Throwable::cause_offset; 2882 int java_lang_Throwable::stackTrace_offset; 2883 int java_lang_Throwable::static_unassigned_stacktrace_offset; 2884 int java_lang_reflect_AccessibleObject::override_offset; 2885 int java_lang_reflect_Method::clazz_offset; 2886 int java_lang_reflect_Method::name_offset; 2887 int java_lang_reflect_Method::returnType_offset; 2888 int java_lang_reflect_Method::parameterTypes_offset; 2889 int java_lang_reflect_Method::exceptionTypes_offset; 2890 int java_lang_reflect_Method::slot_offset; 2891 int java_lang_reflect_Method::modifiers_offset; 2892 int java_lang_reflect_Method::signature_offset; 2893 int java_lang_reflect_Method::annotations_offset; 2894 int java_lang_reflect_Method::parameter_annotations_offset; 2895 int java_lang_reflect_Method::annotation_default_offset; 2896 int java_lang_reflect_Constructor::clazz_offset; 2897 int java_lang_reflect_Constructor::parameterTypes_offset; 2898 int java_lang_reflect_Constructor::exceptionTypes_offset; 2899 int java_lang_reflect_Constructor::slot_offset; 2900 int java_lang_reflect_Constructor::modifiers_offset; 2901 int java_lang_reflect_Constructor::signature_offset; 2902 int java_lang_reflect_Constructor::annotations_offset; 2903 int java_lang_reflect_Constructor::parameter_annotations_offset; 2904 int java_lang_reflect_Field::clazz_offset; 2905 int java_lang_reflect_Field::name_offset; 2906 int java_lang_reflect_Field::type_offset; 2907 int java_lang_reflect_Field::slot_offset; 2908 int java_lang_reflect_Field::modifiers_offset; 2909 int java_lang_reflect_Field::signature_offset; 2910 int java_lang_reflect_Field::annotations_offset; 2911 int java_lang_boxing_object::value_offset; 2912 int java_lang_boxing_object::long_value_offset; 2913 int java_lang_ref_Reference::referent_offset; 2914 int java_lang_ref_Reference::queue_offset; 2915 int java_lang_ref_Reference::next_offset; 2916 int java_lang_ref_Reference::discovered_offset; 2917 int java_lang_ref_Reference::static_lock_offset; 2918 int java_lang_ref_Reference::static_pending_offset; 2919 int java_lang_ref_Reference::number_of_fake_oop_fields; 2920 int java_lang_ref_SoftReference::timestamp_offset; 2921 int java_lang_ref_SoftReference::static_clock_offset; 2922 int java_lang_ClassLoader::parent_offset; 2923 int java_lang_System::static_in_offset; 2924 int java_lang_System::static_out_offset; 2925 int java_lang_System::static_err_offset; 2926 int java_lang_StackTraceElement::declaringClass_offset; 2927 int java_lang_StackTraceElement::methodName_offset; 2928 int java_lang_StackTraceElement::fileName_offset; 2929 int java_lang_StackTraceElement::lineNumber_offset; 2930 int java_lang_AssertionStatusDirectives::classes_offset; 2931 int java_lang_AssertionStatusDirectives::classEnabled_offset; 2932 int java_lang_AssertionStatusDirectives::packages_offset; 2933 int java_lang_AssertionStatusDirectives::packageEnabled_offset; 2934 int java_lang_AssertionStatusDirectives::deflt_offset; 2935 int java_nio_Buffer::_limit_offset; 2936 int java_util_concurrent_locks_AbstractOwnableSynchronizer::_owner_offset = 0; 2937 int sun_reflect_ConstantPool::_cp_oop_offset; 2938 int sun_reflect_UnsafeStaticFieldAccessorImpl::_base_offset; 2939 2940 2941 // Support for java_lang_StackTraceElement 2942 2943 void java_lang_StackTraceElement::set_fileName(oop element, oop value) { 2944 element->obj_field_put(fileName_offset, value); 2945 } 2946 2947 void java_lang_StackTraceElement::set_declaringClass(oop element, oop value) { 2948 element->obj_field_put(declaringClass_offset, value); 2949 } 2950 2951 void java_lang_StackTraceElement::set_methodName(oop element, oop value) { 2952 element->obj_field_put(methodName_offset, value); 2953 } 2954 2955 void java_lang_StackTraceElement::set_lineNumber(oop element, int value) { 2956 element->int_field_put(lineNumber_offset, value); 2957 } 2958 2959 2960 // Support for java Assertions - java_lang_AssertionStatusDirectives. 2961 2962 void java_lang_AssertionStatusDirectives::set_classes(oop o, oop val) { 2963 o->obj_field_put(classes_offset, val); 2964 } 2965 2966 void java_lang_AssertionStatusDirectives::set_classEnabled(oop o, oop val) { 2967 o->obj_field_put(classEnabled_offset, val); 2968 } 2969 2970 void java_lang_AssertionStatusDirectives::set_packages(oop o, oop val) { 2971 o->obj_field_put(packages_offset, val); 2972 } 2973 2974 void java_lang_AssertionStatusDirectives::set_packageEnabled(oop o, oop val) { 2975 o->obj_field_put(packageEnabled_offset, val); 2976 } 2977 2978 void java_lang_AssertionStatusDirectives::set_deflt(oop o, bool val) { 2979 o->bool_field_put(deflt_offset, val); 2980 } 2981 2982 2983 // Support for intrinsification of java.nio.Buffer.checkIndex 2984 int java_nio_Buffer::limit_offset() { 2985 return _limit_offset; 2986 } 2987 2988 2989 void java_nio_Buffer::compute_offsets() { 2990 klassOop k = SystemDictionary::nio_Buffer_klass(); 2991 assert(k != NULL, "must be loaded in 1.4+"); 2992 compute_offset(_limit_offset, k, vmSymbols::limit_name(), vmSymbols::int_signature()); 2993 } 2994 2995 void java_util_concurrent_locks_AbstractOwnableSynchronizer::initialize(TRAPS) { 2996 if (_owner_offset != 0) return; 2997 2998 assert(JDK_Version::is_gte_jdk16x_version(), "Must be JDK 1.6 or later"); 2999 SystemDictionary::load_abstract_ownable_synchronizer_klass(CHECK); 3000 klassOop k = SystemDictionary::abstract_ownable_synchronizer_klass(); 3001 compute_offset(_owner_offset, k, 3002 vmSymbols::exclusive_owner_thread_name(), vmSymbols::thread_signature()); 3003 } 3004 3005 oop java_util_concurrent_locks_AbstractOwnableSynchronizer::get_owner_threadObj(oop obj) { 3006 assert(_owner_offset != 0, "Must be initialized"); 3007 return obj->obj_field(_owner_offset); 3008 } 3009 3010 // Compute hard-coded offsets 3011 // Invoked before SystemDictionary::initialize, so pre-loaded classes 3012 // are not available to determine the offset_of_static_fields. 3013 void JavaClasses::compute_hard_coded_offsets() { 3014 const int x = heapOopSize; 3015 const int header = instanceOopDesc::base_offset_in_bytes(); 3016 3017 // Throwable Class 3018 java_lang_Throwable::backtrace_offset = java_lang_Throwable::hc_backtrace_offset * x + header; 3019 java_lang_Throwable::detailMessage_offset = java_lang_Throwable::hc_detailMessage_offset * x + header; 3020 java_lang_Throwable::cause_offset = java_lang_Throwable::hc_cause_offset * x + header; 3021 java_lang_Throwable::stackTrace_offset = java_lang_Throwable::hc_stackTrace_offset * x + header; 3022 java_lang_Throwable::static_unassigned_stacktrace_offset = java_lang_Throwable::hc_static_unassigned_stacktrace_offset * x; 3023 3024 // java_lang_boxing_object 3025 java_lang_boxing_object::value_offset = java_lang_boxing_object::hc_value_offset + header; 3026 java_lang_boxing_object::long_value_offset = align_size_up((java_lang_boxing_object::hc_value_offset + header), BytesPerLong); 3027 3028 // java_lang_ref_Reference: 3029 java_lang_ref_Reference::referent_offset = java_lang_ref_Reference::hc_referent_offset * x + header; 3030 java_lang_ref_Reference::queue_offset = java_lang_ref_Reference::hc_queue_offset * x + header; 3031 java_lang_ref_Reference::next_offset = java_lang_ref_Reference::hc_next_offset * x + header; 3032 java_lang_ref_Reference::discovered_offset = java_lang_ref_Reference::hc_discovered_offset * x + header; 3033 java_lang_ref_Reference::static_lock_offset = java_lang_ref_Reference::hc_static_lock_offset * x; 3034 java_lang_ref_Reference::static_pending_offset = java_lang_ref_Reference::hc_static_pending_offset * x; 3035 // Artificial fields for java_lang_ref_Reference 3036 // The first field is for the discovered field added in 1.4 3037 java_lang_ref_Reference::number_of_fake_oop_fields = 1; 3038 3039 // java_lang_ref_SoftReference Class 3040 java_lang_ref_SoftReference::timestamp_offset = align_size_up((java_lang_ref_SoftReference::hc_timestamp_offset * x + header), BytesPerLong); 3041 // Don't multiply static fields because they are always in wordSize units 3042 java_lang_ref_SoftReference::static_clock_offset = java_lang_ref_SoftReference::hc_static_clock_offset * x; 3043 3044 // java_lang_ClassLoader 3045 java_lang_ClassLoader::parent_offset = java_lang_ClassLoader::hc_parent_offset * x + header; 3046 3047 // java_lang_System 3048 java_lang_System::static_in_offset = java_lang_System::hc_static_in_offset * x; 3049 java_lang_System::static_out_offset = java_lang_System::hc_static_out_offset * x; 3050 java_lang_System::static_err_offset = java_lang_System::hc_static_err_offset * x; 3051 3052 // java_lang_StackTraceElement 3053 java_lang_StackTraceElement::declaringClass_offset = java_lang_StackTraceElement::hc_declaringClass_offset * x + header; 3054 java_lang_StackTraceElement::methodName_offset = java_lang_StackTraceElement::hc_methodName_offset * x + header; 3055 java_lang_StackTraceElement::fileName_offset = java_lang_StackTraceElement::hc_fileName_offset * x + header; 3056 java_lang_StackTraceElement::lineNumber_offset = java_lang_StackTraceElement::hc_lineNumber_offset * x + header; 3057 java_lang_AssertionStatusDirectives::classes_offset = java_lang_AssertionStatusDirectives::hc_classes_offset * x + header; 3058 java_lang_AssertionStatusDirectives::classEnabled_offset = java_lang_AssertionStatusDirectives::hc_classEnabled_offset * x + header; 3059 java_lang_AssertionStatusDirectives::packages_offset = java_lang_AssertionStatusDirectives::hc_packages_offset * x + header; 3060 java_lang_AssertionStatusDirectives::packageEnabled_offset = java_lang_AssertionStatusDirectives::hc_packageEnabled_offset * x + header; 3061 java_lang_AssertionStatusDirectives::deflt_offset = java_lang_AssertionStatusDirectives::hc_deflt_offset * x + header; 3062 3063 } 3064 3065 3066 // Compute non-hard-coded field offsets of all the classes in this file 3067 void JavaClasses::compute_offsets() { 3068 // java_lang_Class::compute_offsets was called earlier in bootstrap 3069 java_lang_ClassLoader::compute_offsets(); 3070 java_lang_Thread::compute_offsets(); 3071 java_lang_ThreadGroup::compute_offsets(); 3072 if (EnableInvokeDynamic) { 3073 java_lang_invoke_MethodHandle::compute_offsets(); 3074 java_lang_invoke_MemberName::compute_offsets(); 3075 java_lang_invoke_DirectMethodHandle::compute_offsets(); 3076 java_lang_invoke_BoundMethodHandle::compute_offsets(); 3077 java_lang_invoke_AdapterMethodHandle::compute_offsets(); 3078 java_lang_invoke_MethodType::compute_offsets(); 3079 java_lang_invoke_MethodTypeForm::compute_offsets(); 3080 java_lang_invoke_CallSite::compute_offsets(); 3081 java_lang_invoke_CountingMethodHandle::compute_offsets(); 3082 } 3083 java_security_AccessControlContext::compute_offsets(); 3084 // Initialize reflection classes. The layouts of these classes 3085 // changed with the new reflection implementation in JDK 1.4, and 3086 // since the Universe doesn't know what JDK version it is until this 3087 // point we defer computation of these offsets until now. 3088 java_lang_reflect_AccessibleObject::compute_offsets(); 3089 java_lang_reflect_Method::compute_offsets(); 3090 java_lang_reflect_Constructor::compute_offsets(); 3091 java_lang_reflect_Field::compute_offsets(); 3092 if (JDK_Version::is_gte_jdk14x_version()) { 3093 java_nio_Buffer::compute_offsets(); 3094 } 3095 if (JDK_Version::is_gte_jdk15x_version()) { 3096 sun_reflect_ConstantPool::compute_offsets(); 3097 sun_reflect_UnsafeStaticFieldAccessorImpl::compute_offsets(); 3098 } 3099 3100 // generated interpreter code wants to know about the offsets we just computed: 3101 AbstractAssembler::update_delayed_values(); 3102 } 3103 3104 #ifndef PRODUCT 3105 3106 // These functions exist to assert the validity of hard-coded field offsets to guard 3107 // against changes in the class files 3108 3109 bool JavaClasses::check_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { 3110 EXCEPTION_MARK; 3111 fieldDescriptor fd; 3112 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH); 3113 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); 3114 instanceKlassHandle h_klass (THREAD, k); 3115 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH); 3116 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH); 3117 if (!h_klass->find_local_field(f_name, f_sig, &fd)) { 3118 tty->print_cr("Nonstatic field %s.%s not found", klass_name, field_name); 3119 return false; 3120 } 3121 if (fd.is_static()) { 3122 tty->print_cr("Nonstatic field %s.%s appears to be static", klass_name, field_name); 3123 return false; 3124 } 3125 if (fd.offset() == hardcoded_offset ) { 3126 return true; 3127 } else { 3128 tty->print_cr("Offset of nonstatic field %s.%s is hardcoded as %d but should really be %d.", 3129 klass_name, field_name, hardcoded_offset, fd.offset()); 3130 return false; 3131 } 3132 } 3133 3134 3135 bool JavaClasses::check_static_offset(const char *klass_name, int hardcoded_offset, const char *field_name, const char* field_sig) { 3136 EXCEPTION_MARK; 3137 fieldDescriptor fd; 3138 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH); 3139 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); 3140 instanceKlassHandle h_klass (THREAD, k); 3141 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH); 3142 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH); 3143 if (!h_klass->find_local_field(f_name, f_sig, &fd)) { 3144 tty->print_cr("Static field %s.%s not found", klass_name, field_name); 3145 return false; 3146 } 3147 if (!fd.is_static()) { 3148 tty->print_cr("Static field %s.%s appears to be nonstatic", klass_name, field_name); 3149 return false; 3150 } 3151 if (fd.offset() == hardcoded_offset + instanceMirrorKlass::offset_of_static_fields()) { 3152 return true; 3153 } else { 3154 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()); 3155 return false; 3156 } 3157 } 3158 3159 3160 bool JavaClasses::check_constant(const char *klass_name, int hardcoded_constant, const char *field_name, const char* field_sig) { 3161 EXCEPTION_MARK; 3162 fieldDescriptor fd; 3163 TempNewSymbol klass_sym = SymbolTable::new_symbol(klass_name, CATCH); 3164 klassOop k = SystemDictionary::resolve_or_fail(klass_sym, true, CATCH); 3165 instanceKlassHandle h_klass (THREAD, k); 3166 TempNewSymbol f_name = SymbolTable::new_symbol(field_name, CATCH); 3167 TempNewSymbol f_sig = SymbolTable::new_symbol(field_sig, CATCH); 3168 if (!h_klass->find_local_field(f_name, f_sig, &fd)) { 3169 tty->print_cr("Static field %s.%s not found", klass_name, field_name); 3170 return false; 3171 } 3172 if (!fd.is_static() || !fd.has_initial_value()) { 3173 tty->print_cr("Static field %s.%s appears to be non-constant", klass_name, field_name); 3174 return false; 3175 } 3176 if (!fd.initial_value_tag().is_int()) { 3177 tty->print_cr("Static field %s.%s is not an int", klass_name, field_name); 3178 return false; 3179 } 3180 jint field_value = fd.int_initial_value(); 3181 if (field_value == hardcoded_constant) { 3182 return true; 3183 } else { 3184 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); 3185 return false; 3186 } 3187 } 3188 3189 3190 // Check the hard-coded field offsets of all the classes in this file 3191 3192 void JavaClasses::check_offsets() { 3193 bool valid = true; 3194 3195 #define CHECK_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ 3196 valid &= check_offset(klass_name, cpp_klass_name :: field_name ## _offset, #field_name, field_sig) 3197 3198 #define CHECK_LONG_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ 3199 valid &= check_offset(klass_name, cpp_klass_name :: long_ ## field_name ## _offset, #field_name, field_sig) 3200 3201 #define CHECK_STATIC_OFFSET(klass_name, cpp_klass_name, field_name, field_sig) \ 3202 valid &= check_static_offset(klass_name, cpp_klass_name :: static_ ## field_name ## _offset, #field_name, field_sig) 3203 3204 #define CHECK_CONSTANT(klass_name, cpp_klass_name, field_name, field_sig) \ 3205 valid &= check_constant(klass_name, cpp_klass_name :: field_name, #field_name, field_sig) 3206 3207 // java.lang.String 3208 3209 CHECK_OFFSET("java/lang/String", java_lang_String, value, "[C"); 3210 if (java_lang_String::has_offset_field()) { 3211 CHECK_OFFSET("java/lang/String", java_lang_String, offset, "I"); 3212 CHECK_OFFSET("java/lang/String", java_lang_String, count, "I"); 3213 } 3214 if (java_lang_String::has_hash_field()) { 3215 CHECK_OFFSET("java/lang/String", java_lang_String, hash, "I"); 3216 } 3217 3218 // java.lang.Class 3219 3220 // Fake fields 3221 // CHECK_OFFSET("java/lang/Class", java_lang_Class, klass); // %%% this needs to be checked 3222 // CHECK_OFFSET("java/lang/Class", java_lang_Class, array_klass); // %%% this needs to be checked 3223 // CHECK_OFFSET("java/lang/Class", java_lang_Class, resolved_constructor); // %%% this needs to be checked 3224 3225 // java.lang.Throwable 3226 3227 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, backtrace, "Ljava/lang/Object;"); 3228 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, detailMessage, "Ljava/lang/String;"); 3229 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, cause, "Ljava/lang/Throwable;"); 3230 CHECK_OFFSET("java/lang/Throwable", java_lang_Throwable, stackTrace, "[Ljava/lang/StackTraceElement;"); 3231 3232 // Boxed primitive objects (java_lang_boxing_object) 3233 3234 CHECK_OFFSET("java/lang/Boolean", java_lang_boxing_object, value, "Z"); 3235 CHECK_OFFSET("java/lang/Character", java_lang_boxing_object, value, "C"); 3236 CHECK_OFFSET("java/lang/Float", java_lang_boxing_object, value, "F"); 3237 CHECK_LONG_OFFSET("java/lang/Double", java_lang_boxing_object, value, "D"); 3238 CHECK_OFFSET("java/lang/Byte", java_lang_boxing_object, value, "B"); 3239 CHECK_OFFSET("java/lang/Short", java_lang_boxing_object, value, "S"); 3240 CHECK_OFFSET("java/lang/Integer", java_lang_boxing_object, value, "I"); 3241 CHECK_LONG_OFFSET("java/lang/Long", java_lang_boxing_object, value, "J"); 3242 3243 // java.lang.ClassLoader 3244 3245 CHECK_OFFSET("java/lang/ClassLoader", java_lang_ClassLoader, parent, "Ljava/lang/ClassLoader;"); 3246 3247 // java.lang.System 3248 3249 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, in, "Ljava/io/InputStream;"); 3250 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, out, "Ljava/io/PrintStream;"); 3251 CHECK_STATIC_OFFSET("java/lang/System", java_lang_System, err, "Ljava/io/PrintStream;"); 3252 3253 // java.lang.StackTraceElement 3254 3255 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, declaringClass, "Ljava/lang/String;"); 3256 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, methodName, "Ljava/lang/String;"); 3257 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, fileName, "Ljava/lang/String;"); 3258 CHECK_OFFSET("java/lang/StackTraceElement", java_lang_StackTraceElement, lineNumber, "I"); 3259 3260 // java.lang.ref.Reference 3261 3262 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, referent, "Ljava/lang/Object;"); 3263 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, queue, "Ljava/lang/ref/ReferenceQueue;"); 3264 CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, next, "Ljava/lang/ref/Reference;"); 3265 // Fake field 3266 //CHECK_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, discovered, "Ljava/lang/ref/Reference;"); 3267 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, lock, "Ljava/lang/ref/Reference$Lock;"); 3268 CHECK_STATIC_OFFSET("java/lang/ref/Reference", java_lang_ref_Reference, pending, "Ljava/lang/ref/Reference;"); 3269 3270 // java.lang.ref.SoftReference 3271 3272 CHECK_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, timestamp, "J"); 3273 CHECK_STATIC_OFFSET("java/lang/ref/SoftReference", java_lang_ref_SoftReference, clock, "J"); 3274 3275 // java.lang.AssertionStatusDirectives 3276 // 3277 // The CheckAssertionStatusDirectives boolean can be removed from here and 3278 // globals.hpp after the AssertionStatusDirectives class has been integrated 3279 // into merlin "for some time." Without it, the vm will fail with early 3280 // merlin builds. 3281 3282 if (CheckAssertionStatusDirectives && JDK_Version::is_gte_jdk14x_version()) { 3283 const char* nm = "java/lang/AssertionStatusDirectives"; 3284 const char* sig = "[Ljava/lang/String;"; 3285 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classes, sig); 3286 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, classEnabled, "[Z"); 3287 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packages, sig); 3288 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, packageEnabled, "[Z"); 3289 CHECK_OFFSET(nm, java_lang_AssertionStatusDirectives, deflt, "Z"); 3290 } 3291 3292 if (!valid) vm_exit_during_initialization("Hard-coded field offset verification failed"); 3293 } 3294 3295 #endif // PRODUCT 3296 3297 int InjectedField::compute_offset() { 3298 klassOop klass_oop = klass(); 3299 for (AllFieldStream fs(instanceKlass::cast(klass_oop)); !fs.done(); fs.next()) { 3300 if (!may_be_java && !fs.access_flags().is_internal()) { 3301 // Only look at injected fields 3302 continue; 3303 } 3304 if (fs.name() == name() && fs.signature() == signature()) { 3305 return fs.offset(); 3306 } 3307 } 3308 ResourceMark rm; 3309 tty->print_cr("Invalid layout of %s at %s", instanceKlass::cast(klass_oop)->external_name(), name()->as_C_string()); 3310 fatal("Invalid layout of preloaded class"); 3311 return -1; 3312 } 3313 3314 void javaClasses_init() { 3315 JavaClasses::compute_offsets(); 3316 JavaClasses::check_offsets(); 3317 FilteredFieldsMap::initialize(); // must be done after computing offsets. 3318 }