1 /* 2 * Copyright (c) 1999, 2013, 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 "ci/ciField.hpp" 27 #include "ci/ciInstance.hpp" 28 #include "ci/ciInstanceKlass.hpp" 29 #include "ci/ciUtilities.hpp" 30 #include "classfile/systemDictionary.hpp" 31 #include "memory/allocation.hpp" 32 #include "memory/allocation.inline.hpp" 33 #include "oops/oop.inline.hpp" 34 #include "oops/fieldStreams.hpp" 35 #include "runtime/fieldDescriptor.hpp" 36 37 // ciInstanceKlass 38 // 39 // This class represents a Klass* in the HotSpot virtual machine 40 // whose Klass part in an InstanceKlass. 41 42 // ------------------------------------------------------------------ 43 // ciInstanceKlass::ciInstanceKlass 44 // 45 // Loaded instance klass. 46 ciInstanceKlass::ciInstanceKlass(KlassHandle h_k) : 47 ciKlass(h_k), _non_static_fields(NULL) 48 { 49 assert(get_Klass()->oop_is_instance(), "wrong type"); 50 assert(get_instanceKlass()->is_loaded(), "must be at least loaded"); 51 InstanceKlass* ik = get_instanceKlass(); 52 53 AccessFlags access_flags = ik->access_flags(); 54 _flags = ciFlags(access_flags); 55 _has_finalizer = access_flags.has_finalizer(); 56 _has_subklass = ik->subklass() != NULL; 57 _init_state = ik->init_state(); 58 _nonstatic_field_size = ik->nonstatic_field_size(); 59 _has_nonstatic_fields = ik->has_nonstatic_fields(); 60 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields: 61 62 _implementor = NULL; // we will fill these lazily 63 64 Thread *thread = Thread::current(); 65 if (ciObjectFactory::is_initialized()) { 66 _loader = JNIHandles::make_local(thread, ik->class_loader()); 67 _protection_domain = JNIHandles::make_local(thread, 68 ik->protection_domain()); 69 _is_shared = false; 70 } else { 71 Handle h_loader(thread, ik->class_loader()); 72 Handle h_protection_domain(thread, ik->protection_domain()); 73 _loader = JNIHandles::make_global(h_loader); 74 _protection_domain = JNIHandles::make_global(h_protection_domain); 75 _is_shared = true; 76 } 77 78 // Lazy fields get filled in only upon request. 79 _super = NULL; 80 _java_mirror = NULL; 81 82 if (is_shared()) { 83 if (h_k() != SystemDictionary::Object_klass()) { 84 super(); 85 } 86 //compute_nonstatic_fields(); // done outside of constructor 87 } 88 89 _field_cache = NULL; 90 } 91 92 // Version for unloaded classes: 93 ciInstanceKlass::ciInstanceKlass(ciSymbol* name, 94 jobject loader, jobject protection_domain) 95 : ciKlass(name, T_OBJECT) 96 { 97 assert(name->byte_at(0) != '[', "not an instance klass"); 98 _init_state = (InstanceKlass::ClassState)0; 99 _nonstatic_field_size = -1; 100 _has_nonstatic_fields = false; 101 _nonstatic_fields = NULL; 102 _loader = loader; 103 _protection_domain = protection_domain; 104 _is_shared = false; 105 _super = NULL; 106 _java_mirror = NULL; 107 _field_cache = NULL; 108 } 109 110 111 112 // ------------------------------------------------------------------ 113 // ciInstanceKlass::compute_shared_is_initialized 114 void ciInstanceKlass::compute_shared_init_state() { 115 GUARDED_VM_ENTRY( 116 InstanceKlass* ik = get_instanceKlass(); 117 _init_state = ik->init_state(); 118 ) 119 } 120 121 // ------------------------------------------------------------------ 122 // ciInstanceKlass::compute_shared_has_subklass 123 bool ciInstanceKlass::compute_shared_has_subklass() { 124 GUARDED_VM_ENTRY( 125 InstanceKlass* ik = get_instanceKlass(); 126 _has_subklass = ik->subklass() != NULL; 127 return _has_subklass; 128 ) 129 } 130 131 // ------------------------------------------------------------------ 132 // ciInstanceKlass::loader 133 oop ciInstanceKlass::loader() { 134 ASSERT_IN_VM; 135 return JNIHandles::resolve(_loader); 136 } 137 138 // ------------------------------------------------------------------ 139 // ciInstanceKlass::loader_handle 140 jobject ciInstanceKlass::loader_handle() { 141 return _loader; 142 } 143 144 // ------------------------------------------------------------------ 145 // ciInstanceKlass::protection_domain 146 oop ciInstanceKlass::protection_domain() { 147 ASSERT_IN_VM; 148 return JNIHandles::resolve(_protection_domain); 149 } 150 151 // ------------------------------------------------------------------ 152 // ciInstanceKlass::protection_domain_handle 153 jobject ciInstanceKlass::protection_domain_handle() { 154 return _protection_domain; 155 } 156 157 // ------------------------------------------------------------------ 158 // ciInstanceKlass::field_cache 159 // 160 // Get the field cache associated with this klass. 161 ciConstantPoolCache* ciInstanceKlass::field_cache() { 162 if (is_shared()) { 163 return NULL; 164 } 165 if (_field_cache == NULL) { 166 assert(!is_java_lang_Object(), "Object has no fields"); 167 Arena* arena = CURRENT_ENV->arena(); 168 _field_cache = new (arena) ciConstantPoolCache(arena, 5); 169 } 170 return _field_cache; 171 } 172 173 // ------------------------------------------------------------------ 174 // ciInstanceKlass::get_canonical_holder 175 // 176 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) { 177 #ifdef ASSERT 178 if (!(offset >= 0 && offset < layout_helper())) { 179 tty->print("*** get_canonical_holder(%d) on ", offset); 180 this->print(); 181 tty->print_cr(" ***"); 182 }; 183 assert(offset >= 0 && offset < layout_helper(), "offset must be tame"); 184 #endif 185 186 if (offset < instanceOopDesc::base_offset_in_bytes()) { 187 // All header offsets belong properly to java/lang/Object. 188 return CURRENT_ENV->Object_klass(); 189 } 190 191 ciInstanceKlass* self = this; 192 for (;;) { 193 assert(self->is_loaded(), "must be loaded to have size"); 194 ciInstanceKlass* super = self->super(); 195 if (super == NULL || super->nof_nonstatic_fields() == 0 || 196 !super->contains_field_offset(offset)) { 197 return self; 198 } else { 199 self = super; // return super->get_canonical_holder(offset) 200 } 201 } 202 } 203 204 // ------------------------------------------------------------------ 205 // ciInstanceKlass::is_java_lang_Object 206 // 207 // Is this klass java.lang.Object? 208 bool ciInstanceKlass::is_java_lang_Object() const { 209 return equals(CURRENT_ENV->Object_klass()); 210 } 211 212 // ------------------------------------------------------------------ 213 // ciInstanceKlass::uses_default_loader 214 bool ciInstanceKlass::uses_default_loader() const { 215 // Note: We do not need to resolve the handle or enter the VM 216 // in order to test null-ness. 217 return _loader == NULL; 218 } 219 220 // ------------------------------------------------------------------ 221 222 /** 223 * Return basic type of boxed value for box klass or T_OBJECT if not. 224 */ 225 BasicType ciInstanceKlass::box_klass_type() const { 226 if (uses_default_loader() && is_loaded()) { 227 return SystemDictionary::box_klass_type(get_Klass()); 228 } else { 229 return T_OBJECT; 230 } 231 } 232 233 /** 234 * Is this boxing klass? 235 */ 236 bool ciInstanceKlass::is_box_klass() const { 237 return is_java_primitive(box_klass_type()); 238 } 239 240 /** 241 * Is this boxed value offset? 242 */ 243 bool ciInstanceKlass::is_boxed_value_offset(int offset) const { 244 BasicType bt = box_klass_type(); 245 return is_java_primitive(bt) && 246 (offset == java_lang_boxing_object::value_offset_in_bytes(bt)); 247 } 248 249 // ------------------------------------------------------------------ 250 // ciInstanceKlass::is_in_package 251 // 252 // Is this klass in the given package? 253 bool ciInstanceKlass::is_in_package(const char* packagename, int len) { 254 // To avoid class loader mischief, this test always rejects application classes. 255 if (!uses_default_loader()) 256 return false; 257 GUARDED_VM_ENTRY( 258 return is_in_package_impl(packagename, len); 259 ) 260 } 261 262 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) { 263 ASSERT_IN_VM; 264 265 // If packagename contains trailing '/' exclude it from the 266 // prefix-test since we test for it explicitly. 267 if (packagename[len - 1] == '/') 268 len--; 269 270 if (!name()->starts_with(packagename, len)) 271 return false; 272 273 // Test if the class name is something like "java/lang". 274 if ((len + 1) > name()->utf8_length()) 275 return false; 276 277 // Test for trailing '/' 278 if ((char) name()->byte_at(len) != '/') 279 return false; 280 281 // Make sure it's not actually in a subpackage: 282 if (name()->index_of_at(len+1, "/", 1) >= 0) 283 return false; 284 285 return true; 286 } 287 288 // ------------------------------------------------------------------ 289 // ciInstanceKlass::print_impl 290 // 291 // Implementation of the print method. 292 void ciInstanceKlass::print_impl(outputStream* st) { 293 ciKlass::print_impl(st); 294 GUARDED_VM_ENTRY(st->print(" loader=0x%x", (address)loader());) 295 if (is_loaded()) { 296 st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=", 297 bool_to_str(is_initialized()), 298 bool_to_str(has_finalizer()), 299 bool_to_str(has_subklass()), 300 layout_helper()); 301 302 _flags.print_klass_flags(); 303 304 if (_super) { 305 st->print(" super="); 306 _super->print_name(); 307 } 308 if (_java_mirror) { 309 st->print(" mirror=PRESENT"); 310 } 311 } else { 312 st->print(" loaded=false"); 313 } 314 } 315 316 // ------------------------------------------------------------------ 317 // ciInstanceKlass::super 318 // 319 // Get the superklass of this klass. 320 ciInstanceKlass* ciInstanceKlass::super() { 321 assert(is_loaded(), "must be loaded"); 322 if (_super == NULL && !is_java_lang_Object()) { 323 GUARDED_VM_ENTRY( 324 Klass* super_klass = get_instanceKlass()->super(); 325 _super = CURRENT_ENV->get_instance_klass(super_klass); 326 ) 327 } 328 return _super; 329 } 330 331 // ------------------------------------------------------------------ 332 // ciInstanceKlass::java_mirror 333 // 334 // Get the instance of java.lang.Class corresponding to this klass. 335 // Cache it on this->_java_mirror. 336 ciInstance* ciInstanceKlass::java_mirror() { 337 if (is_shared()) { 338 return ciKlass::java_mirror(); 339 } 340 if (_java_mirror == NULL) { 341 _java_mirror = ciKlass::java_mirror(); 342 } 343 return _java_mirror; 344 } 345 346 // ------------------------------------------------------------------ 347 // ciInstanceKlass::unique_concrete_subklass 348 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() { 349 if (!is_loaded()) return NULL; // No change if class is not loaded 350 if (!is_abstract()) return NULL; // Only applies to abstract classes. 351 if (!has_subklass()) return NULL; // Must have at least one subklass. 352 VM_ENTRY_MARK; 353 InstanceKlass* ik = get_instanceKlass(); 354 Klass* up = ik->up_cast_abstract(); 355 assert(up->oop_is_instance(), "must be InstanceKlass"); 356 if (ik == up) { 357 return NULL; 358 } 359 return CURRENT_THREAD_ENV->get_instance_klass(up); 360 } 361 362 // ------------------------------------------------------------------ 363 // ciInstanceKlass::has_finalizable_subclass 364 bool ciInstanceKlass::has_finalizable_subclass() { 365 if (!is_loaded()) return true; 366 VM_ENTRY_MARK; 367 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL; 368 } 369 370 // ------------------------------------------------------------------ 371 // ciInstanceKlass::get_field_by_offset 372 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) { 373 if (!is_static) { 374 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) { 375 ciField* field = _nonstatic_fields->at(i); 376 int field_off = field->offset_in_bytes(); 377 if (field_off == field_offset) 378 return field; 379 if (field_off > field_offset) 380 break; 381 // could do binary search or check bins, but probably not worth it 382 } 383 return NULL; 384 } 385 VM_ENTRY_MARK; 386 InstanceKlass* k = get_instanceKlass(); 387 fieldDescriptor fd; 388 if (!k->find_field_from_offset(field_offset, is_static, &fd)) { 389 return NULL; 390 } 391 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); 392 return field; 393 } 394 395 // ------------------------------------------------------------------ 396 // ciInstanceKlass::get_field_by_name 397 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) { 398 VM_ENTRY_MARK; 399 InstanceKlass* k = get_instanceKlass(); 400 fieldDescriptor fd; 401 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd); 402 if (def == NULL) { 403 return NULL; 404 } 405 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); 406 return field; 407 } 408 409 // ------------------------------------------------------------------ 410 // ciInstanceKlass::non_static_fields. 411 412 class NonStaticFieldFiller: public FieldClosure { 413 GrowableArray<ciField*>* _arr; 414 ciEnv* _curEnv; 415 public: 416 NonStaticFieldFiller(ciEnv* curEnv, GrowableArray<ciField*>* arr) : 417 _curEnv(curEnv), _arr(arr) 418 {} 419 void do_field(fieldDescriptor* fd) { 420 ciField* field = new (_curEnv->arena()) ciField(fd); 421 _arr->append(field); 422 } 423 }; 424 425 GrowableArray<ciField*>* ciInstanceKlass::non_static_fields() { 426 if (_non_static_fields == NULL) { 427 VM_ENTRY_MARK; 428 ciEnv* curEnv = ciEnv::current(); 429 InstanceKlass* ik = get_instanceKlass(); 430 int max_n_fields = ik->java_fields_count(); 431 432 Arena* arena = curEnv->arena(); 433 _non_static_fields = 434 new (arena) GrowableArray<ciField*>(arena, max_n_fields, 0, NULL); 435 NonStaticFieldFiller filler(curEnv, _non_static_fields); 436 ik->do_nonstatic_fields(&filler); 437 } 438 return _non_static_fields; 439 } 440 441 static int sort_field_by_offset(ciField** a, ciField** b) { 442 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes(); 443 // (no worries about 32-bit overflow...) 444 } 445 446 // ------------------------------------------------------------------ 447 // ciInstanceKlass::compute_nonstatic_fields 448 int ciInstanceKlass::compute_nonstatic_fields() { 449 assert(is_loaded(), "must be loaded"); 450 451 if (_nonstatic_fields != NULL) 452 return _nonstatic_fields->length(); 453 454 if (!has_nonstatic_fields()) { 455 Arena* arena = CURRENT_ENV->arena(); 456 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL); 457 return 0; 458 } 459 assert(!is_java_lang_Object(), "bootstrap OK"); 460 461 // Size in bytes of my fields, including inherited fields. 462 int fsize = nonstatic_field_size() * heapOopSize; 463 464 ciInstanceKlass* super = this->super(); 465 GrowableArray<ciField*>* super_fields = NULL; 466 if (super != NULL && super->has_nonstatic_fields()) { 467 int super_fsize = super->nonstatic_field_size() * heapOopSize; 468 int super_flen = super->nof_nonstatic_fields(); 469 super_fields = super->_nonstatic_fields; 470 assert(super_flen == 0 || super_fields != NULL, "first get nof_fields"); 471 // See if I am no larger than my super; if so, I can use his fields. 472 if (fsize == super_fsize) { 473 _nonstatic_fields = super_fields; 474 return super_fields->length(); 475 } 476 } 477 478 GrowableArray<ciField*>* fields = NULL; 479 GUARDED_VM_ENTRY({ 480 fields = compute_nonstatic_fields_impl(super_fields); 481 }); 482 483 if (fields == NULL) { 484 // This can happen if this class (java.lang.Class) has invisible fields. 485 _nonstatic_fields = super_fields; 486 return super_fields->length(); 487 } 488 489 int flen = fields->length(); 490 491 // Now sort them by offset, ascending. 492 // (In principle, they could mix with superclass fields.) 493 fields->sort(sort_field_by_offset); 494 _nonstatic_fields = fields; 495 return flen; 496 } 497 498 GrowableArray<ciField*>* 499 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>* 500 super_fields) { 501 ASSERT_IN_VM; 502 Arena* arena = CURRENT_ENV->arena(); 503 int flen = 0; 504 GrowableArray<ciField*>* fields = NULL; 505 InstanceKlass* k = get_instanceKlass(); 506 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { 507 if (fs.access_flags().is_static()) continue; 508 flen += 1; 509 } 510 511 // allocate the array: 512 if (flen == 0) { 513 return NULL; // return nothing if none are locally declared 514 } 515 if (super_fields != NULL) { 516 flen += super_fields->length(); 517 } 518 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL); 519 if (super_fields != NULL) { 520 fields->appendAll(super_fields); 521 } 522 523 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { 524 if (fs.access_flags().is_static()) continue; 525 fieldDescriptor& fd = fs.field_descriptor(); 526 ciField* field = new (arena) ciField(&fd); 527 fields->append(field); 528 } 529 assert(fields->length() == flen, "sanity"); 530 return fields; 531 } 532 533 // ------------------------------------------------------------------ 534 // ciInstanceKlass::find_method 535 // 536 // Find a method in this klass. 537 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) { 538 VM_ENTRY_MARK; 539 InstanceKlass* k = get_instanceKlass(); 540 Symbol* name_sym = name->get_symbol(); 541 Symbol* sig_sym= signature->get_symbol(); 542 543 Method* m = k->find_method(name_sym, sig_sym); 544 if (m == NULL) return NULL; 545 546 return CURRENT_THREAD_ENV->get_method(m); 547 } 548 549 // ------------------------------------------------------------------ 550 // ciInstanceKlass::is_leaf_type 551 bool ciInstanceKlass::is_leaf_type() { 552 assert(is_loaded(), "must be loaded"); 553 if (is_shared()) { 554 return is_final(); // approximately correct 555 } else { 556 return !_has_subklass && (nof_implementors() == 0); 557 } 558 } 559 560 // ------------------------------------------------------------------ 561 // ciInstanceKlass::implementor 562 // 563 // Report an implementor of this interface. 564 // Note that there are various races here, since my copy 565 // of _nof_implementors might be out of date with respect 566 // to results returned by InstanceKlass::implementor. 567 // This is OK, since any dependencies we decide to assert 568 // will be checked later under the Compile_lock. 569 ciInstanceKlass* ciInstanceKlass::implementor() { 570 ciInstanceKlass* impl = _implementor; 571 if (impl == NULL) { 572 // Go into the VM to fetch the implementor. 573 { 574 VM_ENTRY_MARK; 575 Klass* k = get_instanceKlass()->implementor(); 576 if (k != NULL) { 577 if (k == get_instanceKlass()) { 578 // More than one implementors. Use 'this' in this case. 579 impl = this; 580 } else { 581 impl = CURRENT_THREAD_ENV->get_instance_klass(k); 582 } 583 } 584 } 585 // Memoize this result. 586 if (!is_shared()) { 587 _implementor = impl; 588 } 589 } 590 return impl; 591 } 592 593 // Utility class for printing of the contents of the static fields for 594 // use by compilation replay. It only prints out the information that 595 // could be consumed by the compiler, so for primitive types it prints 596 // out the actual value. For Strings it's the actual string value. 597 // For array types it it's first level array size since that's the 598 // only value which statically unchangeable. For all other reference 599 // types it simply prints out the dynamic type. 600 601 class StaticFinalFieldPrinter : public FieldClosure { 602 outputStream* _out; 603 const char* _holder; 604 public: 605 StaticFinalFieldPrinter(outputStream* out, const char* holder) : 606 _out(out), 607 _holder(holder) { 608 } 609 void do_field(fieldDescriptor* fd) { 610 if (fd->is_final() && !fd->has_initial_value()) { 611 ResourceMark rm; 612 oop mirror = fd->field_holder()->java_mirror(); 613 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii()); 614 switch (fd->field_type()) { 615 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break; 616 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break; 617 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break; 618 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break; 619 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break; 620 case T_LONG: _out->print_cr(INT64_FORMAT, mirror->long_field(fd->offset())); break; 621 case T_FLOAT: { 622 float f = mirror->float_field(fd->offset()); 623 _out->print_cr("%d", *(int*)&f); 624 break; 625 } 626 case T_DOUBLE: { 627 double d = mirror->double_field(fd->offset()); 628 _out->print_cr(INT64_FORMAT, *(jlong*)&d); 629 break; 630 } 631 case T_ARRAY: { 632 oop value = mirror->obj_field_acquire(fd->offset()); 633 if (value == NULL) { 634 _out->print_cr("null"); 635 } else { 636 typeArrayOop ta = (typeArrayOop)value; 637 _out->print("%d", ta->length()); 638 if (value->is_objArray()) { 639 objArrayOop oa = (objArrayOop)value; 640 const char* klass_name = value->klass()->name()->as_quoted_ascii(); 641 _out->print(" %s", klass_name); 642 } 643 _out->cr(); 644 } 645 break; 646 } 647 case T_OBJECT: { 648 oop value = mirror->obj_field_acquire(fd->offset()); 649 if (value == NULL) { 650 _out->print_cr("null"); 651 } else if (value->is_instance()) { 652 if (value->is_a(SystemDictionary::String_klass())) { 653 _out->print("\""); 654 _out->print_raw(java_lang_String::as_quoted_ascii(value)); 655 _out->print_cr("\""); 656 } else { 657 const char* klass_name = value->klass()->name()->as_quoted_ascii(); 658 _out->print_cr(klass_name); 659 } 660 } else { 661 ShouldNotReachHere(); 662 } 663 break; 664 } 665 default: 666 ShouldNotReachHere(); 667 } 668 } 669 } 670 }; 671 672 673 void ciInstanceKlass::dump_replay_data(outputStream* out) { 674 ASSERT_IN_VM; 675 ResourceMark rm; 676 677 InstanceKlass* ik = get_instanceKlass(); 678 ConstantPool* cp = ik->constants(); 679 680 // Try to record related loaded classes 681 Klass* sub = ik->subklass(); 682 while (sub != NULL) { 683 if (sub->oop_is_instance()) { 684 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii()); 685 } 686 sub = sub->next_sibling(); 687 } 688 689 // Dump out the state of the constant pool tags. During replay the 690 // tags will be validated for things which shouldn't change and 691 // classes will be resolved if the tags indicate that they were 692 // resolved at compile time. 693 out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(), 694 is_linked(), is_initialized(), cp->length()); 695 for (int index = 1; index < cp->length(); index++) { 696 out->print(" %d", cp->tags()->at(index)); 697 } 698 out->cr(); 699 if (is_initialized()) { 700 // Dump out the static final fields in case the compilation relies 701 // on their value for correct replay. 702 StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii()); 703 ik->do_local_static_fields(&sffp); 704 } 705 }