1 /* 2 * Copyright (c) 1997, 2021, 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 "jvm.h" 27 #include "classfile/javaClasses.inline.hpp" 28 #include "classfile/moduleEntry.hpp" 29 #include "classfile/packageEntry.hpp" 30 #include "classfile/stringTable.hpp" 31 #include "classfile/verifier.hpp" 32 #include "classfile/vmClasses.hpp" 33 #include "classfile/vmSymbols.hpp" 34 #include "interpreter/linkResolver.hpp" 35 #include "logging/log.hpp" 36 #include "memory/oopFactory.hpp" 37 #include "memory/resourceArea.hpp" 38 #include "memory/universe.hpp" 39 #include "oops/inlineKlass.inline.hpp" 40 #include "oops/instanceKlass.inline.hpp" 41 #include "oops/klass.inline.hpp" 42 #include "oops/objArrayKlass.hpp" 43 #include "oops/objArrayOop.inline.hpp" 44 #include "oops/oop.inline.hpp" 45 #include "oops/typeArrayOop.inline.hpp" 46 #include "prims/jvmtiExport.hpp" 47 #include "runtime/fieldDescriptor.inline.hpp" 48 #include "runtime/handles.inline.hpp" 49 #include "runtime/javaCalls.hpp" 50 #include "runtime/reflection.hpp" 51 #include "runtime/reflectionUtils.hpp" 52 #include "runtime/signature.hpp" 53 #include "runtime/thread.inline.hpp" 54 #include "runtime/vframe.inline.hpp" 55 #include "utilities/formatBuffer.hpp" 56 #include "utilities/globalDefinitions.hpp" 57 58 static void trace_class_resolution(oop mirror) { 59 if (mirror == NULL || java_lang_Class::is_primitive(mirror)) { 60 return; 61 } 62 Klass* to_class = java_lang_Class::as_Klass(mirror); 63 ResourceMark rm; 64 int line_number = -1; 65 const char * source_file = NULL; 66 Klass* caller = NULL; 67 JavaThread* jthread = JavaThread::current(); 68 if (jthread->has_last_Java_frame()) { 69 vframeStream vfst(jthread); 70 // skip over any frames belonging to java.lang.Class 71 while (!vfst.at_end() && 72 vfst.method()->method_holder()->name() == vmSymbols::java_lang_Class()) { 73 vfst.next(); 74 } 75 if (!vfst.at_end()) { 76 // this frame is a likely suspect 77 caller = vfst.method()->method_holder(); 78 line_number = vfst.method()->line_number_from_bci(vfst.bci()); 79 Symbol* s = vfst.method()->method_holder()->source_file_name(); 80 if (s != NULL) { 81 source_file = s->as_C_string(); 82 } 83 } 84 } 85 if (caller != NULL) { 86 const char * from = caller->external_name(); 87 const char * to = to_class->external_name(); 88 // print in a single call to reduce interleaving between threads 89 if (source_file != NULL) { 90 log_debug(class, resolve)("%s %s %s:%d (reflection)", from, to, source_file, line_number); 91 } else { 92 log_debug(class, resolve)("%s %s (reflection)", from, to); 93 } 94 } 95 } 96 97 98 oop Reflection::box(jvalue* value, BasicType type, TRAPS) { 99 if (type == T_VOID) { 100 return NULL; 101 } 102 if (is_reference_type(type)) { 103 // regular objects are not boxed 104 return cast_to_oop(value->l); 105 } 106 oop result = java_lang_boxing_object::create(type, value, CHECK_NULL); 107 if (result == NULL) { 108 THROW_(vmSymbols::java_lang_IllegalArgumentException(), result); 109 } 110 return result; 111 } 112 113 114 BasicType Reflection::unbox_for_primitive(oop box, jvalue* value, TRAPS) { 115 if (box == NULL) { 116 THROW_(vmSymbols::java_lang_IllegalArgumentException(), T_ILLEGAL); 117 } 118 return java_lang_boxing_object::get_value(box, value); 119 } 120 121 BasicType Reflection::unbox_for_regular_object(oop box, jvalue* value) { 122 // Note: box is really the unboxed oop. It might even be a Short, etc.! 123 value->l = cast_from_oop<jobject>(box); 124 return T_OBJECT; 125 } 126 127 128 void Reflection::widen(jvalue* value, BasicType current_type, BasicType wide_type, TRAPS) { 129 assert(wide_type != current_type, "widen should not be called with identical types"); 130 switch (wide_type) { 131 case T_BOOLEAN: 132 case T_BYTE: 133 case T_CHAR: 134 break; // fail 135 case T_SHORT: 136 switch (current_type) { 137 case T_BYTE: 138 value->s = (jshort) value->b; 139 return; 140 default: 141 break; 142 } 143 break; // fail 144 case T_INT: 145 switch (current_type) { 146 case T_BYTE: 147 value->i = (jint) value->b; 148 return; 149 case T_CHAR: 150 value->i = (jint) value->c; 151 return; 152 case T_SHORT: 153 value->i = (jint) value->s; 154 return; 155 default: 156 break; 157 } 158 break; // fail 159 case T_LONG: 160 switch (current_type) { 161 case T_BYTE: 162 value->j = (jlong) value->b; 163 return; 164 case T_CHAR: 165 value->j = (jlong) value->c; 166 return; 167 case T_SHORT: 168 value->j = (jlong) value->s; 169 return; 170 case T_INT: 171 value->j = (jlong) value->i; 172 return; 173 default: 174 break; 175 } 176 break; // fail 177 case T_FLOAT: 178 switch (current_type) { 179 case T_BYTE: 180 value->f = (jfloat) value->b; 181 return; 182 case T_CHAR: 183 value->f = (jfloat) value->c; 184 return; 185 case T_SHORT: 186 value->f = (jfloat) value->s; 187 return; 188 case T_INT: 189 value->f = (jfloat) value->i; 190 return; 191 case T_LONG: 192 value->f = (jfloat) value->j; 193 return; 194 default: 195 break; 196 } 197 break; // fail 198 case T_DOUBLE: 199 switch (current_type) { 200 case T_BYTE: 201 value->d = (jdouble) value->b; 202 return; 203 case T_CHAR: 204 value->d = (jdouble) value->c; 205 return; 206 case T_SHORT: 207 value->d = (jdouble) value->s; 208 return; 209 case T_INT: 210 value->d = (jdouble) value->i; 211 return; 212 case T_FLOAT: 213 value->d = (jdouble) value->f; 214 return; 215 case T_LONG: 216 value->d = (jdouble) value->j; 217 return; 218 default: 219 break; 220 } 221 break; // fail 222 default: 223 break; // fail 224 } 225 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); 226 } 227 228 229 BasicType Reflection::array_get(jvalue* value, arrayOop a, int index, TRAPS) { 230 if (!a->is_within_bounds(index)) { 231 THROW_(vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), T_ILLEGAL); 232 } 233 if (a->is_objArray()) { 234 value->l = cast_from_oop<jobject>(objArrayOop(a)->obj_at(index)); 235 return T_OBJECT; 236 } else { 237 assert(a->is_typeArray(), "just checking"); 238 BasicType type = TypeArrayKlass::cast(a->klass())->element_type(); 239 switch (type) { 240 case T_BOOLEAN: 241 value->z = typeArrayOop(a)->bool_at(index); 242 break; 243 case T_CHAR: 244 value->c = typeArrayOop(a)->char_at(index); 245 break; 246 case T_FLOAT: 247 value->f = typeArrayOop(a)->float_at(index); 248 break; 249 case T_DOUBLE: 250 value->d = typeArrayOop(a)->double_at(index); 251 break; 252 case T_BYTE: 253 value->b = typeArrayOop(a)->byte_at(index); 254 break; 255 case T_SHORT: 256 value->s = typeArrayOop(a)->short_at(index); 257 break; 258 case T_INT: 259 value->i = typeArrayOop(a)->int_at(index); 260 break; 261 case T_LONG: 262 value->j = typeArrayOop(a)->long_at(index); 263 break; 264 default: 265 return T_ILLEGAL; 266 } 267 return type; 268 } 269 } 270 271 272 void Reflection::array_set(jvalue* value, arrayOop a, int index, BasicType value_type, TRAPS) { 273 if (!a->is_within_bounds(index)) { 274 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); 275 } 276 if (a->is_objArray()) { 277 if (value_type == T_OBJECT) { 278 oop obj = cast_to_oop(value->l); 279 if (obj != NULL) { 280 Klass* element_klass = ObjArrayKlass::cast(a->klass())->element_klass(); 281 if (!obj->is_a(element_klass)) { 282 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "array element type mismatch"); 283 } 284 } 285 objArrayOop(a)->obj_at_put(index, obj); 286 } 287 } else { 288 assert(a->is_typeArray(), "just checking"); 289 BasicType array_type = TypeArrayKlass::cast(a->klass())->element_type(); 290 if (array_type != value_type) { 291 // The widen operation can potentially throw an exception, but cannot block, 292 // so typeArrayOop a is safe if the call succeeds. 293 widen(value, value_type, array_type, CHECK); 294 } 295 switch (array_type) { 296 case T_BOOLEAN: 297 typeArrayOop(a)->bool_at_put(index, value->z); 298 break; 299 case T_CHAR: 300 typeArrayOop(a)->char_at_put(index, value->c); 301 break; 302 case T_FLOAT: 303 typeArrayOop(a)->float_at_put(index, value->f); 304 break; 305 case T_DOUBLE: 306 typeArrayOop(a)->double_at_put(index, value->d); 307 break; 308 case T_BYTE: 309 typeArrayOop(a)->byte_at_put(index, value->b); 310 break; 311 case T_SHORT: 312 typeArrayOop(a)->short_at_put(index, value->s); 313 break; 314 case T_INT: 315 typeArrayOop(a)->int_at_put(index, value->i); 316 break; 317 case T_LONG: 318 typeArrayOop(a)->long_at_put(index, value->j); 319 break; 320 default: 321 THROW(vmSymbols::java_lang_IllegalArgumentException()); 322 } 323 } 324 } 325 326 static Klass* basic_type_mirror_to_arrayklass(oop basic_type_mirror, TRAPS) { 327 assert(java_lang_Class::is_primitive(basic_type_mirror), "just checking"); 328 BasicType type = java_lang_Class::primitive_type(basic_type_mirror); 329 if (type == T_VOID) { 330 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); 331 } 332 else { 333 return Universe::typeArrayKlassObj(type); 334 } 335 } 336 337 arrayOop Reflection::reflect_new_array(oop element_mirror, jint length, TRAPS) { 338 if (element_mirror == NULL) { 339 THROW_0(vmSymbols::java_lang_NullPointerException()); 340 } 341 if (length < 0) { 342 THROW_MSG_0(vmSymbols::java_lang_NegativeArraySizeException(), err_msg("%d", length)); 343 } 344 if (java_lang_Class::is_primitive(element_mirror)) { 345 Klass* tak = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); 346 return TypeArrayKlass::cast(tak)->allocate(length, THREAD); 347 } else { 348 Klass* k = java_lang_Class::as_Klass(element_mirror); 349 if (k->is_array_klass() && ArrayKlass::cast(k)->dimension() >= MAX_DIM) { 350 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); 351 } 352 if (k->is_inline_klass() && java_lang_Class::is_secondary_mirror(element_mirror)) { 353 return oopFactory::new_valueArray(k, length, THREAD); 354 } else { 355 return oopFactory::new_objArray(k, length, THREAD); 356 } 357 } 358 } 359 360 361 arrayOop Reflection::reflect_new_multi_array(oop element_mirror, typeArrayOop dim_array, TRAPS) { 362 assert(dim_array->is_typeArray(), "just checking"); 363 assert(TypeArrayKlass::cast(dim_array->klass())->element_type() == T_INT, "just checking"); 364 365 if (element_mirror == NULL) { 366 THROW_0(vmSymbols::java_lang_NullPointerException()); 367 } 368 369 int len = dim_array->length(); 370 if (len <= 0 || len > MAX_DIM) { 371 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); 372 } 373 374 jint dimensions[MAX_DIM]; // C array copy of intArrayOop 375 for (int i = 0; i < len; i++) { 376 int d = dim_array->int_at(i); 377 if (d < 0) { 378 THROW_MSG_0(vmSymbols::java_lang_NegativeArraySizeException(), err_msg("%d", d)); 379 } 380 dimensions[i] = d; 381 } 382 383 Klass* klass; 384 int dim = len; 385 if (java_lang_Class::is_primitive(element_mirror)) { 386 klass = basic_type_mirror_to_arrayklass(element_mirror, CHECK_NULL); 387 } else { 388 klass = java_lang_Class::as_Klass(element_mirror); 389 if (klass->is_array_klass()) { 390 int k_dim = ArrayKlass::cast(klass)->dimension(); 391 if (k_dim + len > MAX_DIM) { 392 THROW_0(vmSymbols::java_lang_IllegalArgumentException()); 393 } 394 dim += k_dim; 395 } 396 } 397 if (klass->is_inline_klass() && java_lang_Class::is_secondary_mirror(element_mirror)) { 398 klass = InlineKlass::cast(klass)->value_array_klass(dim, CHECK_NULL); 399 } else { 400 klass = klass->array_klass(dim, CHECK_NULL); 401 } 402 oop obj = ArrayKlass::cast(klass)->multi_allocate(len, dimensions, CHECK_NULL); 403 assert(obj->is_array(), "just checking"); 404 return arrayOop(obj); 405 } 406 407 408 static bool can_relax_access_check_for(const Klass* accessor, 409 const Klass* accessee, 410 bool classloader_only) { 411 412 const InstanceKlass* accessor_ik = InstanceKlass::cast(accessor); 413 const InstanceKlass* accessee_ik = InstanceKlass::cast(accessee); 414 415 if (RelaxAccessControlCheck && 416 accessor_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION && 417 accessee_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION) { 418 return classloader_only && 419 Verifier::relax_access_for(accessor_ik->class_loader()) && 420 accessor_ik->protection_domain() == accessee_ik->protection_domain() && 421 accessor_ik->class_loader() == accessee_ik->class_loader(); 422 } 423 424 return false; 425 } 426 427 /* 428 Type Accessibility check for public types: Callee Type T is accessible to Caller Type S if: 429 430 Callee T in Callee T in package PT, 431 unnamed module runtime module MT 432 ------------------------------------------------------------------------------------------------ 433 434 Caller S in package If MS is loose: YES If same classloader/package (PS == PT): YES 435 PS, runtime module MS If MS can read T's If same runtime module: (MS == MT): YES 436 unnamed module: YES 437 Else if (MS can read MT (establish readability) && 438 ((MT exports PT to MS or to all modules) || 439 (MT is open))): YES 440 441 ------------------------------------------------------------------------------------------------ 442 Caller S in unnamed YES Readability exists because unnamed module 443 module UM "reads" all modules 444 if (MT exports PT to UM or to all modules): YES 445 446 ------------------------------------------------------------------------------------------------ 447 448 Note: a loose module is a module that can read all current and future unnamed modules. 449 */ 450 Reflection::VerifyClassAccessResults Reflection::verify_class_access( 451 const Klass* current_class, const InstanceKlass* new_class, bool classloader_only) { 452 453 // Verify that current_class can access new_class. If the classloader_only 454 // flag is set, we automatically allow any accesses in which current_class 455 // doesn't have a classloader. 456 if ((current_class == NULL) || 457 (current_class == new_class) || 458 is_same_class_package(current_class, new_class)) { 459 return ACCESS_OK; 460 } 461 // Allow all accesses from jdk/internal/reflect/MagicAccessorImpl subclasses to 462 // succeed trivially. 463 if (vmClasses::reflect_MagicAccessorImpl_klass_is_loaded() && 464 current_class->is_subclass_of(vmClasses::reflect_MagicAccessorImpl_klass())) { 465 return ACCESS_OK; 466 } 467 468 // module boundaries 469 if (new_class->is_public()) { 470 // Ignore modules for DumpSharedSpaces because we do not have any package 471 // or module information for modules other than java.base. 472 if (DumpSharedSpaces) { 473 return ACCESS_OK; 474 } 475 476 // Find the module entry for current_class, the accessor 477 ModuleEntry* module_from = current_class->module(); 478 // Find the module entry for new_class, the accessee 479 ModuleEntry* module_to = new_class->module(); 480 481 // both in same (possibly unnamed) module 482 if (module_from == module_to) { 483 return ACCESS_OK; 484 } 485 486 // Acceptable access to a type in an unnamed module. Note that since 487 // unnamed modules can read all unnamed modules, this also handles the 488 // case where module_from is also unnamed but in a different class loader. 489 if (!module_to->is_named() && 490 (module_from->can_read_all_unnamed() || module_from->can_read(module_to))) { 491 return ACCESS_OK; 492 } 493 494 // Establish readability, check if module_from is allowed to read module_to. 495 if (!module_from->can_read(module_to)) { 496 return MODULE_NOT_READABLE; 497 } 498 499 // Access is allowed if module_to is open, i.e. all its packages are unqualifiedly exported 500 if (module_to->is_open()) { 501 return ACCESS_OK; 502 } 503 504 PackageEntry* package_to = new_class->package(); 505 assert(package_to != NULL, "can not obtain new_class' package"); 506 507 { 508 MutexLocker m1(Module_lock); 509 510 // Once readability is established, if module_to exports T unqualifiedly, 511 // (to all modules), than whether module_from is in the unnamed module 512 // or not does not matter, access is allowed. 513 if (package_to->is_unqual_exported()) { 514 return ACCESS_OK; 515 } 516 517 // Access is allowed if both 1 & 2 hold: 518 // 1. Readability, module_from can read module_to (established above). 519 // 2. Either module_to exports T to module_from qualifiedly. 520 // or 521 // module_to exports T to all unnamed modules and module_from is unnamed. 522 // or 523 // module_to exports T unqualifiedly to all modules (checked above). 524 if (!package_to->is_qexported_to(module_from)) { 525 return TYPE_NOT_EXPORTED; 526 } 527 } 528 return ACCESS_OK; 529 } 530 531 if (can_relax_access_check_for(current_class, new_class, classloader_only)) { 532 return ACCESS_OK; 533 } 534 return OTHER_PROBLEM; 535 } 536 537 // Return an error message specific to the specified Klass*'s and result. 538 // This function must be called from within a block containing a ResourceMark. 539 char* Reflection::verify_class_access_msg(const Klass* current_class, 540 const InstanceKlass* new_class, 541 const VerifyClassAccessResults result) { 542 assert(result != ACCESS_OK, "must be failure result"); 543 char * msg = NULL; 544 if (result != OTHER_PROBLEM && new_class != NULL && current_class != NULL) { 545 // Find the module entry for current_class, the accessor 546 ModuleEntry* module_from = current_class->module(); 547 const char * module_from_name = module_from->is_named() ? module_from->name()->as_C_string() : UNNAMED_MODULE; 548 const char * current_class_name = current_class->external_name(); 549 550 // Find the module entry for new_class, the accessee 551 ModuleEntry* module_to = NULL; 552 module_to = new_class->module(); 553 const char * module_to_name = module_to->is_named() ? module_to->name()->as_C_string() : UNNAMED_MODULE; 554 const char * new_class_name = new_class->external_name(); 555 556 if (result == MODULE_NOT_READABLE) { 557 assert(module_from->is_named(), "Unnamed modules can read all modules"); 558 if (module_to->is_named()) { 559 size_t len = 100 + strlen(current_class_name) + 2*strlen(module_from_name) + 560 strlen(new_class_name) + 2*strlen(module_to_name); 561 msg = NEW_RESOURCE_ARRAY(char, len); 562 jio_snprintf(msg, len - 1, 563 "class %s (in module %s) cannot access class %s (in module %s) because module %s does not read module %s", 564 current_class_name, module_from_name, new_class_name, 565 module_to_name, module_from_name, module_to_name); 566 } else { 567 oop jlm = module_to->module(); 568 assert(jlm != NULL, "Null jlm in module_to ModuleEntry"); 569 intptr_t identity_hash = jlm->identity_hash(); 570 size_t len = 160 + strlen(current_class_name) + 2*strlen(module_from_name) + 571 strlen(new_class_name) + 2*sizeof(uintx); 572 msg = NEW_RESOURCE_ARRAY(char, len); 573 jio_snprintf(msg, len - 1, 574 "class %s (in module %s) cannot access class %s (in unnamed module @" SIZE_FORMAT_HEX ") because module %s does not read unnamed module @" SIZE_FORMAT_HEX, 575 current_class_name, module_from_name, new_class_name, uintx(identity_hash), 576 module_from_name, uintx(identity_hash)); 577 } 578 579 } else if (result == TYPE_NOT_EXPORTED) { 580 assert(new_class->package() != NULL, 581 "Unnamed packages are always exported"); 582 const char * package_name = 583 new_class->package()->name()->as_klass_external_name(); 584 assert(module_to->is_named(), "Unnamed modules export all packages"); 585 if (module_from->is_named()) { 586 size_t len = 118 + strlen(current_class_name) + 2*strlen(module_from_name) + 587 strlen(new_class_name) + 2*strlen(module_to_name) + strlen(package_name); 588 msg = NEW_RESOURCE_ARRAY(char, len); 589 jio_snprintf(msg, len - 1, 590 "class %s (in module %s) cannot access class %s (in module %s) because module %s does not export %s to module %s", 591 current_class_name, module_from_name, new_class_name, 592 module_to_name, module_to_name, package_name, module_from_name); 593 } else { 594 oop jlm = module_from->module(); 595 assert(jlm != NULL, "Null jlm in module_from ModuleEntry"); 596 intptr_t identity_hash = jlm->identity_hash(); 597 size_t len = 170 + strlen(current_class_name) + strlen(new_class_name) + 598 2*strlen(module_to_name) + strlen(package_name) + 2*sizeof(uintx); 599 msg = NEW_RESOURCE_ARRAY(char, len); 600 jio_snprintf(msg, len - 1, 601 "class %s (in unnamed module @" SIZE_FORMAT_HEX ") cannot access class %s (in module %s) because module %s does not export %s to unnamed module @" SIZE_FORMAT_HEX, 602 current_class_name, uintx(identity_hash), new_class_name, module_to_name, 603 module_to_name, package_name, uintx(identity_hash)); 604 } 605 } else { 606 ShouldNotReachHere(); 607 } 608 } // result != OTHER_PROBLEM... 609 return msg; 610 } 611 612 bool Reflection::verify_member_access(const Klass* current_class, 613 const Klass* resolved_class, 614 const Klass* member_class, 615 AccessFlags access, 616 bool classloader_only, 617 bool protected_restriction, 618 TRAPS) { 619 // Verify that current_class can access a member of member_class, where that 620 // field's access bits are "access". We assume that we've already verified 621 // that current_class can access member_class. 622 // 623 // If the classloader_only flag is set, we automatically allow any accesses 624 // in which current_class doesn't have a classloader. 625 // 626 // "resolved_class" is the runtime type of "member_class". Sometimes we don't 627 // need this distinction (e.g. if all we have is the runtime type, or during 628 // class file parsing when we only care about the static type); in that case 629 // callers should ensure that resolved_class == member_class. 630 // 631 if ((current_class == NULL) || 632 (current_class == member_class) || 633 access.is_public()) { 634 return true; 635 } 636 637 if (current_class == member_class) { 638 return true; 639 } 640 641 if (access.is_protected()) { 642 if (!protected_restriction) { 643 // See if current_class (or outermost host class) is a subclass of member_class 644 // An interface may not access protected members of j.l.Object 645 if (!current_class->is_interface() && current_class->is_subclass_of(member_class)) { 646 if (access.is_static() || // static fields are ok, see 6622385 647 current_class == resolved_class || 648 member_class == resolved_class || 649 current_class->is_subclass_of(resolved_class) || 650 resolved_class->is_subclass_of(current_class)) { 651 return true; 652 } 653 } 654 } 655 } 656 657 // package access 658 if (!access.is_private() && is_same_class_package(current_class, member_class)) { 659 return true; 660 } 661 662 // private access between different classes needs a nestmate check. 663 if (access.is_private()) { 664 if (current_class->is_instance_klass() && member_class->is_instance_klass() ) { 665 InstanceKlass* cur_ik = const_cast<InstanceKlass*>(InstanceKlass::cast(current_class)); 666 InstanceKlass* field_ik = const_cast<InstanceKlass*>(InstanceKlass::cast(member_class)); 667 // Nestmate access checks may require resolution and validation of the nest-host. 668 // It is up to the caller to check for pending exceptions and handle appropriately. 669 bool access = cur_ik->has_nestmate_access_to(field_ik, CHECK_false); 670 if (access) { 671 guarantee(resolved_class->is_subclass_of(member_class), "must be!"); 672 return true; 673 } 674 } 675 } 676 677 // Allow all accesses from jdk/internal/reflect/MagicAccessorImpl subclasses to 678 // succeed trivially. 679 if (current_class->is_subclass_of(vmClasses::reflect_MagicAccessorImpl_klass())) { 680 return true; 681 } 682 683 // Check for special relaxations 684 return can_relax_access_check_for(current_class, member_class, classloader_only); 685 } 686 687 bool Reflection::is_same_class_package(const Klass* class1, const Klass* class2) { 688 return InstanceKlass::cast(class1)->is_same_class_package(class2); 689 } 690 691 // Checks that the 'outer' klass has declared 'inner' as being an inner klass. If not, 692 // throw an incompatible class change exception 693 // If inner_is_member, require the inner to be a member of the outer. 694 // If !inner_is_member, require the inner to be hidden (non-member). 695 // Caller is responsible for figuring out in advance which case must be true. 696 void Reflection::check_for_inner_class(const InstanceKlass* outer, const InstanceKlass* inner, 697 bool inner_is_member, TRAPS) { 698 InnerClassesIterator iter(outer); 699 constantPoolHandle cp (THREAD, outer->constants()); 700 for (; !iter.done(); iter.next()) { 701 int ioff = iter.inner_class_info_index(); 702 int ooff = iter.outer_class_info_index(); 703 704 if (inner_is_member && ioff != 0 && ooff != 0) { 705 if (cp->klass_name_at_matches(outer, ooff) && 706 cp->klass_name_at_matches(inner, ioff)) { 707 Klass* o = cp->klass_at(ooff, CHECK); 708 if (o == outer) { 709 Klass* i = cp->klass_at(ioff, CHECK); 710 if (i == inner) { 711 return; 712 } 713 } 714 } 715 } 716 717 if (!inner_is_member && ioff != 0 && ooff == 0 && 718 cp->klass_name_at_matches(inner, ioff)) { 719 Klass* i = cp->klass_at(ioff, CHECK); 720 if (i == inner) { 721 return; 722 } 723 } 724 } 725 726 // 'inner' not declared as an inner klass in outer 727 ResourceMark rm(THREAD); 728 Exceptions::fthrow( 729 THREAD_AND_LOCATION, 730 vmSymbols::java_lang_IncompatibleClassChangeError(), 731 "%s and %s disagree on InnerClasses attribute", 732 outer->external_name(), 733 inner->external_name() 734 ); 735 } 736 737 static objArrayHandle get_parameter_types(const methodHandle& method, 738 int parameter_count, 739 oop* return_type, 740 TRAPS) { 741 // Allocate array holding parameter types (java.lang.Class instances) 742 objArrayOop m = oopFactory::new_objArray(vmClasses::Class_klass(), parameter_count, CHECK_(objArrayHandle())); 743 objArrayHandle mirrors(THREAD, m); 744 int index = 0; 745 // Collect parameter types 746 ResourceMark rm(THREAD); 747 for (ResolvingSignatureStream ss(method()); !ss.is_done(); ss.next()) { 748 oop mirror = ss.as_java_mirror(SignatureStream::NCDFError, CHECK_(objArrayHandle())); 749 if (log_is_enabled(Debug, class, resolve)) { 750 trace_class_resolution(mirror); 751 } 752 if (!ss.at_return_type()) { 753 mirrors->obj_at_put(index++, mirror); 754 } else if (return_type != NULL) { 755 // Collect return type as well 756 assert(ss.at_return_type(), "return type should be present"); 757 *return_type = mirror; 758 } 759 } 760 assert(index == parameter_count, "invalid parameter count"); 761 return mirrors; 762 } 763 764 static objArrayHandle get_exception_types(const methodHandle& method, TRAPS) { 765 return method->resolved_checked_exceptions(THREAD); 766 } 767 768 static Handle new_type(Symbol* signature, Klass* k, TRAPS) { 769 ResolvingSignatureStream ss(signature, k, false); 770 oop nt = ss.as_java_mirror(SignatureStream::NCDFError, CHECK_NH); 771 return Handle(THREAD, nt); 772 } 773 774 oop Reflection::new_method(const methodHandle& method, bool for_constant_pool_access, TRAPS) { 775 // Allow sun.reflect.ConstantPool to refer to <clinit> methods as java.lang.reflect.Methods. 776 assert(!method()->name()->starts_with('<') || for_constant_pool_access, 777 "should call new_constructor instead"); 778 InstanceKlass* holder = method->method_holder(); 779 int slot = method->method_idnum(); 780 781 Symbol* signature = method->signature(); 782 int parameter_count = ArgumentCount(signature).size(); 783 oop return_type_oop = NULL; 784 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, &return_type_oop, CHECK_NULL); 785 if (parameter_types.is_null() || return_type_oop == NULL) return NULL; 786 787 Handle return_type(THREAD, return_type_oop); 788 789 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); 790 assert(!exception_types.is_null(), "cannot return null"); 791 792 Symbol* method_name = method->name(); 793 oop name_oop = StringTable::intern(method_name, CHECK_NULL); 794 Handle name = Handle(THREAD, name_oop); 795 if (name == NULL) return NULL; 796 797 const int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; 798 799 Handle mh = java_lang_reflect_Method::create(CHECK_NULL); 800 801 java_lang_reflect_Method::set_clazz(mh(), holder->java_mirror()); 802 java_lang_reflect_Method::set_slot(mh(), slot); 803 java_lang_reflect_Method::set_name(mh(), name()); 804 java_lang_reflect_Method::set_return_type(mh(), return_type()); 805 java_lang_reflect_Method::set_parameter_types(mh(), parameter_types()); 806 java_lang_reflect_Method::set_exception_types(mh(), exception_types()); 807 java_lang_reflect_Method::set_modifiers(mh(), modifiers); 808 java_lang_reflect_Method::set_override(mh(), false); 809 if (method->generic_signature() != NULL) { 810 Symbol* gs = method->generic_signature(); 811 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); 812 java_lang_reflect_Method::set_signature(mh(), sig()); 813 } 814 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL); 815 java_lang_reflect_Method::set_annotations(mh(), an_oop); 816 an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL); 817 java_lang_reflect_Method::set_parameter_annotations(mh(), an_oop); 818 an_oop = Annotations::make_java_array(method->annotation_default(), CHECK_NULL); 819 java_lang_reflect_Method::set_annotation_default(mh(), an_oop); 820 return mh(); 821 } 822 823 824 oop Reflection::new_constructor(const methodHandle& method, TRAPS) { 825 assert(method()->is_object_constructor() || 826 method()->is_static_init_factory(), 827 "should call new_method instead"); 828 829 InstanceKlass* holder = method->method_holder(); 830 int slot = method->method_idnum(); 831 832 Symbol* signature = method->signature(); 833 int parameter_count = ArgumentCount(signature).size(); 834 objArrayHandle parameter_types = get_parameter_types(method, parameter_count, NULL, CHECK_NULL); 835 if (parameter_types.is_null()) return NULL; 836 837 objArrayHandle exception_types = get_exception_types(method, CHECK_NULL); 838 assert(!exception_types.is_null(), "cannot return null"); 839 840 const int modifiers = method->access_flags().as_int() & JVM_RECOGNIZED_METHOD_MODIFIERS; 841 842 Handle ch = java_lang_reflect_Constructor::create(CHECK_NULL); 843 844 java_lang_reflect_Constructor::set_clazz(ch(), holder->java_mirror()); 845 java_lang_reflect_Constructor::set_slot(ch(), slot); 846 java_lang_reflect_Constructor::set_parameter_types(ch(), parameter_types()); 847 java_lang_reflect_Constructor::set_exception_types(ch(), exception_types()); 848 java_lang_reflect_Constructor::set_modifiers(ch(), modifiers); 849 java_lang_reflect_Constructor::set_override(ch(), false); 850 if (method->generic_signature() != NULL) { 851 Symbol* gs = method->generic_signature(); 852 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); 853 java_lang_reflect_Constructor::set_signature(ch(), sig()); 854 } 855 typeArrayOop an_oop = Annotations::make_java_array(method->annotations(), CHECK_NULL); 856 java_lang_reflect_Constructor::set_annotations(ch(), an_oop); 857 an_oop = Annotations::make_java_array(method->parameter_annotations(), CHECK_NULL); 858 java_lang_reflect_Constructor::set_parameter_annotations(ch(), an_oop); 859 return ch(); 860 } 861 862 863 oop Reflection::new_field(fieldDescriptor* fd, TRAPS) { 864 Symbol* field_name = fd->name(); 865 oop name_oop = StringTable::intern(field_name, CHECK_NULL); 866 Handle name = Handle(THREAD, name_oop); 867 Symbol* signature = fd->signature(); 868 InstanceKlass* holder = fd->field_holder(); 869 Handle type = new_type(signature, holder, CHECK_NULL); 870 Handle rh = java_lang_reflect_Field::create(CHECK_NULL); 871 872 java_lang_reflect_Field::set_clazz(rh(), fd->field_holder()->java_mirror()); 873 java_lang_reflect_Field::set_slot(rh(), fd->index()); 874 java_lang_reflect_Field::set_name(rh(), name()); 875 java_lang_reflect_Field::set_type(rh(), type()); 876 if (fd->is_trusted_final()) { 877 java_lang_reflect_Field::set_trusted_final(rh()); 878 } 879 // Note the ACC_ANNOTATION bit, which is a per-class access flag, is never set here. 880 int modifiers = fd->access_flags().as_int() & JVM_RECOGNIZED_FIELD_MODIFIERS; 881 java_lang_reflect_Field::set_modifiers(rh(), modifiers); 882 java_lang_reflect_Field::set_override(rh(), false); 883 if (fd->has_generic_signature()) { 884 Symbol* gs = fd->generic_signature(); 885 Handle sig = java_lang_String::create_from_symbol(gs, CHECK_NULL); 886 java_lang_reflect_Field::set_signature(rh(), sig()); 887 } 888 typeArrayOop an_oop = Annotations::make_java_array(fd->annotations(), CHECK_NULL); 889 java_lang_reflect_Field::set_annotations(rh(), an_oop); 890 return rh(); 891 } 892 893 oop Reflection::new_parameter(Handle method, int index, Symbol* sym, 894 int flags, TRAPS) { 895 896 Handle rh = java_lang_reflect_Parameter::create(CHECK_NULL); 897 898 if(NULL != sym) { 899 Handle name = java_lang_String::create_from_symbol(sym, CHECK_NULL); 900 java_lang_reflect_Parameter::set_name(rh(), name()); 901 } else { 902 java_lang_reflect_Parameter::set_name(rh(), NULL); 903 } 904 905 java_lang_reflect_Parameter::set_modifiers(rh(), flags); 906 java_lang_reflect_Parameter::set_executable(rh(), method()); 907 java_lang_reflect_Parameter::set_index(rh(), index); 908 return rh(); 909 } 910 911 912 static methodHandle resolve_interface_call(InstanceKlass* klass, 913 const methodHandle& method, 914 Klass* recv_klass, 915 Handle receiver, 916 TRAPS) { 917 918 assert(!method.is_null() , "method should not be null"); 919 920 CallInfo info; 921 Symbol* signature = method->signature(); 922 Symbol* name = method->name(); 923 LinkResolver::resolve_interface_call(info, receiver, recv_klass, 924 LinkInfo(klass, name, signature), 925 true, 926 CHECK_(methodHandle())); 927 return methodHandle(THREAD, info.selected_method()); 928 } 929 930 // Conversion 931 static BasicType basic_type_mirror_to_basic_type(oop basic_type_mirror) { 932 assert(java_lang_Class::is_primitive(basic_type_mirror), 933 "just checking"); 934 return java_lang_Class::primitive_type(basic_type_mirror); 935 } 936 937 // Narrowing of basic types. Used to create correct jvalues for 938 // boolean, byte, char and short return return values from interpreter 939 // which are returned as ints. Throws IllegalArgumentException. 940 static void narrow(jvalue* value, BasicType narrow_type, TRAPS) { 941 switch (narrow_type) { 942 case T_BOOLEAN: 943 value->z = (jboolean) (value->i & 1); 944 return; 945 case T_BYTE: 946 value->b = (jbyte)value->i; 947 return; 948 case T_CHAR: 949 value->c = (jchar)value->i; 950 return; 951 case T_SHORT: 952 value->s = (jshort)value->i; 953 return; 954 default: 955 break; // fail 956 } 957 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); 958 } 959 960 961 // Method call (shared by invoke_method and invoke_constructor) 962 static oop invoke(InstanceKlass* klass, 963 const methodHandle& reflected_method, 964 Handle receiver, 965 bool override, 966 objArrayHandle ptypes, 967 BasicType rtype, 968 objArrayHandle args, 969 bool is_method_invoke, 970 TRAPS) { 971 972 ResourceMark rm(THREAD); 973 974 methodHandle method; // actual method to invoke 975 Klass* target_klass; // target klass, receiver's klass for non-static 976 977 // Ensure klass is initialized 978 klass->initialize(CHECK_NULL); 979 980 bool is_static = reflected_method->is_static(); 981 if (is_static) { 982 // ignore receiver argument 983 method = reflected_method; 984 target_klass = klass; 985 } else { 986 // check for null receiver 987 if (receiver.is_null()) { 988 THROW_0(vmSymbols::java_lang_NullPointerException()); 989 } 990 // Check class of receiver against class declaring method 991 if (!receiver->is_a(klass)) { 992 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "object is not an instance of declaring class"); 993 } 994 // target klass is receiver's klass 995 target_klass = receiver->klass(); 996 // no need to resolve if method is private or <init> 997 if (reflected_method->is_private() || reflected_method->name() == vmSymbols::object_initializer_name()) { 998 method = reflected_method; 999 } else { 1000 // resolve based on the receiver 1001 if (reflected_method->method_holder()->is_interface()) { 1002 // resolve interface call 1003 // 1004 // Match resolution errors with those thrown due to reflection inlining 1005 // Linktime resolution & IllegalAccessCheck already done by Class.getMethod() 1006 method = resolve_interface_call(klass, reflected_method, target_klass, receiver, THREAD); 1007 if (HAS_PENDING_EXCEPTION) { 1008 // Method resolution threw an exception; wrap it in an InvocationTargetException 1009 oop resolution_exception = PENDING_EXCEPTION; 1010 CLEAR_PENDING_EXCEPTION; 1011 // JVMTI has already reported the pending exception 1012 // JVMTI internal flag reset is needed in order to report InvocationTargetException 1013 JvmtiExport::clear_detected_exception(THREAD); 1014 JavaCallArguments args(Handle(THREAD, resolution_exception)); 1015 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), 1016 vmSymbols::throwable_void_signature(), 1017 &args); 1018 } 1019 } else { 1020 // if the method can be overridden, we resolve using the vtable index. 1021 assert(!reflected_method->has_itable_index(), ""); 1022 int index = reflected_method->vtable_index(); 1023 method = reflected_method; 1024 if (index != Method::nonvirtual_vtable_index) { 1025 method = methodHandle(THREAD, target_klass->method_at_vtable(index)); 1026 } 1027 if (!method.is_null()) { 1028 // Check for abstract methods as well 1029 if (method->is_abstract()) { 1030 // new default: 6531596 1031 ResourceMark rm(THREAD); 1032 stringStream ss; 1033 ss.print("'"); 1034 Method::print_external_name(&ss, target_klass, method->name(), method->signature()); 1035 ss.print("'"); 1036 Handle h_origexception = Exceptions::new_exception(THREAD, 1037 vmSymbols::java_lang_AbstractMethodError(), ss.as_string()); 1038 JavaCallArguments args(h_origexception); 1039 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), 1040 vmSymbols::throwable_void_signature(), 1041 &args); 1042 } 1043 } 1044 } 1045 } 1046 } 1047 1048 // I believe this is a ShouldNotGetHere case which requires 1049 // an internal vtable bug. If you ever get this please let Karen know. 1050 if (method.is_null()) { 1051 ResourceMark rm(THREAD); 1052 stringStream ss; 1053 ss.print("'"); 1054 Method::print_external_name(&ss, klass, 1055 reflected_method->name(), 1056 reflected_method->signature()); 1057 ss.print("'"); 1058 THROW_MSG_0(vmSymbols::java_lang_NoSuchMethodError(), ss.as_string()); 1059 } 1060 1061 assert(ptypes->is_objArray(), "just checking"); 1062 int args_len = args.is_null() ? 0 : args->length(); 1063 // Check number of arguments 1064 if (ptypes->length() != args_len) { 1065 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1066 "wrong number of arguments"); 1067 } 1068 1069 // Create object to contain parameters for the JavaCall 1070 JavaCallArguments java_args(method->size_of_parameters()); 1071 1072 if (!is_static) { 1073 java_args.push_oop(receiver); 1074 } 1075 1076 for (int i = 0; i < args_len; i++) { 1077 oop type_mirror = ptypes->obj_at(i); 1078 oop arg = args->obj_at(i); 1079 if (java_lang_Class::is_primitive(type_mirror)) { 1080 jvalue value; 1081 BasicType ptype = basic_type_mirror_to_basic_type(type_mirror); 1082 BasicType atype = Reflection::unbox_for_primitive(arg, &value, CHECK_NULL); 1083 if (ptype != atype) { 1084 Reflection::widen(&value, atype, ptype, CHECK_NULL); 1085 } 1086 switch (ptype) { 1087 case T_BOOLEAN: java_args.push_int(value.z); break; 1088 case T_CHAR: java_args.push_int(value.c); break; 1089 case T_BYTE: java_args.push_int(value.b); break; 1090 case T_SHORT: java_args.push_int(value.s); break; 1091 case T_INT: java_args.push_int(value.i); break; 1092 case T_LONG: java_args.push_long(value.j); break; 1093 case T_FLOAT: java_args.push_float(value.f); break; 1094 case T_DOUBLE: java_args.push_double(value.d); break; 1095 default: 1096 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), "argument type mismatch"); 1097 } 1098 } else { 1099 if (arg != NULL) { 1100 Klass* k = java_lang_Class::as_Klass(type_mirror); 1101 if (!arg->is_a(k)) { 1102 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(), 1103 "argument type mismatch"); 1104 } 1105 } 1106 Handle arg_handle(THREAD, arg); // Create handle for argument 1107 java_args.push_oop(arg_handle); // Push handle 1108 } 1109 } 1110 1111 assert(java_args.size_of_parameters() == method->size_of_parameters(), 1112 "just checking"); 1113 1114 // All oops (including receiver) is passed in as Handles. An potential oop is returned as an 1115 // oop (i.e., NOT as an handle) 1116 JavaValue result(rtype); 1117 JavaCalls::call(&result, method, &java_args, THREAD); 1118 1119 if (HAS_PENDING_EXCEPTION) { 1120 // Method threw an exception; wrap it in an InvocationTargetException 1121 oop target_exception = PENDING_EXCEPTION; 1122 CLEAR_PENDING_EXCEPTION; 1123 // JVMTI has already reported the pending exception 1124 // JVMTI internal flag reset is needed in order to report InvocationTargetException 1125 JvmtiExport::clear_detected_exception(THREAD); 1126 1127 JavaCallArguments args(Handle(THREAD, target_exception)); 1128 THROW_ARG_0(vmSymbols::java_lang_reflect_InvocationTargetException(), 1129 vmSymbols::throwable_void_signature(), 1130 &args); 1131 } else { 1132 if (rtype == T_BOOLEAN || rtype == T_BYTE || rtype == T_CHAR || rtype == T_SHORT) { 1133 narrow((jvalue*)result.get_value_addr(), rtype, CHECK_NULL); 1134 } 1135 return Reflection::box((jvalue*)result.get_value_addr(), rtype, THREAD); 1136 } 1137 } 1138 1139 // This would be nicer if, say, java.lang.reflect.Method was a subclass 1140 // of java.lang.reflect.Constructor 1141 1142 oop Reflection::invoke_method(oop method_mirror, Handle receiver, objArrayHandle args, TRAPS) { 1143 oop mirror = java_lang_reflect_Method::clazz(method_mirror); 1144 int slot = java_lang_reflect_Method::slot(method_mirror); 1145 bool override = java_lang_reflect_Method::override(method_mirror) != 0; 1146 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Method::parameter_types(method_mirror))); 1147 1148 oop return_type_mirror = java_lang_reflect_Method::return_type(method_mirror); 1149 BasicType rtype; 1150 if (java_lang_Class::is_primitive(return_type_mirror)) { 1151 rtype = basic_type_mirror_to_basic_type(return_type_mirror); 1152 } else if (java_lang_Class::as_Klass(return_type_mirror)->is_inline_klass()) { 1153 rtype = java_lang_Class::is_primary_mirror(return_type_mirror) ? T_OBJECT : T_INLINE_TYPE; 1154 } else { 1155 rtype = T_OBJECT; 1156 } 1157 1158 InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(mirror)); 1159 Method* m = klass->method_with_idnum(slot); 1160 if (m == NULL) { 1161 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); 1162 } 1163 methodHandle method(THREAD, m); 1164 1165 return invoke(klass, method, receiver, override, ptypes, rtype, args, true, THREAD); 1166 } 1167 1168 1169 oop Reflection::invoke_constructor(oop constructor_mirror, objArrayHandle args, TRAPS) { 1170 oop mirror = java_lang_reflect_Constructor::clazz(constructor_mirror); 1171 int slot = java_lang_reflect_Constructor::slot(constructor_mirror); 1172 bool override = java_lang_reflect_Constructor::override(constructor_mirror) != 0; 1173 objArrayHandle ptypes(THREAD, objArrayOop(java_lang_reflect_Constructor::parameter_types(constructor_mirror))); 1174 1175 InstanceKlass* klass = InstanceKlass::cast(java_lang_Class::as_Klass(mirror)); 1176 Method* m = klass->method_with_idnum(slot); 1177 if (m == NULL) { 1178 THROW_MSG_0(vmSymbols::java_lang_InternalError(), "invoke"); 1179 } 1180 methodHandle method(THREAD, m); 1181 assert(method->name() == vmSymbols::object_initializer_name(), "invalid constructor"); 1182 1183 // Make sure klass gets initialize 1184 klass->initialize(CHECK_NULL); 1185 1186 // Create new instance (the receiver) 1187 klass->check_valid_for_instantiation(false, CHECK_NULL); 1188 1189 // Special case for factory methods 1190 if (!method->signature()->is_void_method_signature()) { 1191 assert(klass->is_inline_klass(), "inline classes must use factory methods"); 1192 Handle no_receiver; // null instead of receiver 1193 BasicType rtype; 1194 if (klass->is_hidden()) { 1195 rtype = T_OBJECT; 1196 } else { 1197 rtype = T_INLINE_TYPE; 1198 } 1199 return invoke(klass, method, no_receiver, override, ptypes, rtype, args, false, CHECK_NULL); 1200 } 1201 1202 // main branch of code creates a non-inline object: 1203 assert(!klass->is_inline_klass(), "classic constructors are only for non-inline classes"); 1204 Handle receiver = klass->allocate_instance_handle(CHECK_NULL); 1205 1206 // Ignore result from call and return receiver 1207 invoke(klass, method, receiver, override, ptypes, T_VOID, args, false, CHECK_NULL); 1208 return receiver(); 1209 } --- EOF ---