1 /* 2 * Copyright (c) 1999, 2016, 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 "memory/resourceArea.hpp" 34 #include "oops/oop.inline.hpp" 35 #include "oops/fieldStreams.hpp" 36 #include "runtime/fieldDescriptor.hpp" 37 38 // ciInstanceKlass 39 // 40 // This class represents a Klass* in the HotSpot virtual machine 41 // whose Klass part in an InstanceKlass. 42 43 // ------------------------------------------------------------------ 44 // ciInstanceKlass::ciInstanceKlass 45 // 46 // Loaded instance klass. 47 ciInstanceKlass::ciInstanceKlass(KlassHandle h_k) : 48 ciKlass(h_k) 49 { 50 assert(get_Klass()->is_instance_klass(), "wrong type"); 51 assert(get_instanceKlass()->is_loaded(), "must be at least loaded"); 52 InstanceKlass* ik = get_instanceKlass(); 53 54 AccessFlags access_flags = ik->access_flags(); 55 _flags = ciFlags(access_flags); 56 _has_finalizer = access_flags.has_finalizer(); 57 _has_subklass = ik->subklass() != NULL; 58 _init_state = ik->init_state(); 59 _nonstatic_field_size = ik->nonstatic_field_size(); 60 _has_nonstatic_fields = ik->has_nonstatic_fields(); 61 _has_default_methods = ik->has_default_methods(); 62 _is_anonymous = ik->is_anonymous(); 63 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields: 64 _has_injected_fields = -1; 65 _implementor = NULL; // we will fill these lazily 66 67 Thread *thread = Thread::current(); 68 if (ciObjectFactory::is_initialized()) { 69 _loader = JNIHandles::make_local(thread, ik->class_loader()); 70 _protection_domain = JNIHandles::make_local(thread, 71 ik->protection_domain()); 72 _is_shared = false; 73 } else { 74 Handle h_loader(thread, ik->class_loader()); 75 Handle h_protection_domain(thread, ik->protection_domain()); 76 _loader = JNIHandles::make_global(h_loader); 77 _protection_domain = JNIHandles::make_global(h_protection_domain); 78 _is_shared = true; 79 } 80 81 // Lazy fields get filled in only upon request. 82 _super = NULL; 83 _java_mirror = NULL; 84 85 if (is_shared()) { 86 if (h_k() != SystemDictionary::Object_klass()) { 87 super(); 88 } 89 //compute_nonstatic_fields(); // done outside of constructor 90 } 91 92 _field_cache = NULL; 93 } 94 95 // Version for unloaded classes: 96 ciInstanceKlass::ciInstanceKlass(ciSymbol* name, 97 jobject loader, jobject protection_domain) 98 : ciKlass(name, T_OBJECT) 99 { 100 assert(name->byte_at(0) != '[', "not an instance klass"); 101 _init_state = (InstanceKlass::ClassState)0; 102 _nonstatic_field_size = -1; 103 _has_nonstatic_fields = false; 104 _nonstatic_fields = NULL; 105 _has_injected_fields = -1; 106 _is_anonymous = false; 107 _loader = loader; 108 _protection_domain = protection_domain; 109 _is_shared = false; 110 _super = NULL; 111 _java_mirror = NULL; 112 _field_cache = NULL; 113 } 114 115 116 117 // ------------------------------------------------------------------ 118 // ciInstanceKlass::compute_shared_is_initialized 119 void ciInstanceKlass::compute_shared_init_state() { 120 GUARDED_VM_ENTRY( 121 InstanceKlass* ik = get_instanceKlass(); 122 _init_state = ik->init_state(); 123 ) 124 } 125 126 // ------------------------------------------------------------------ 127 // ciInstanceKlass::compute_shared_has_subklass 128 bool ciInstanceKlass::compute_shared_has_subklass() { 129 GUARDED_VM_ENTRY( 130 InstanceKlass* ik = get_instanceKlass(); 131 _has_subklass = ik->subklass() != NULL; 132 return _has_subklass; 133 ) 134 } 135 136 // ------------------------------------------------------------------ 137 // ciInstanceKlass::loader 138 oop ciInstanceKlass::loader() { 139 ASSERT_IN_VM; 140 return JNIHandles::resolve(_loader); 141 } 142 143 // ------------------------------------------------------------------ 144 // ciInstanceKlass::loader_handle 145 jobject ciInstanceKlass::loader_handle() { 146 return _loader; 147 } 148 149 // ------------------------------------------------------------------ 150 // ciInstanceKlass::protection_domain 151 oop ciInstanceKlass::protection_domain() { 152 ASSERT_IN_VM; 153 return JNIHandles::resolve(_protection_domain); 154 } 155 156 // ------------------------------------------------------------------ 157 // ciInstanceKlass::protection_domain_handle 158 jobject ciInstanceKlass::protection_domain_handle() { 159 return _protection_domain; 160 } 161 162 // ------------------------------------------------------------------ 163 // ciInstanceKlass::field_cache 164 // 165 // Get the field cache associated with this klass. 166 ciConstantPoolCache* ciInstanceKlass::field_cache() { 167 if (is_shared()) { 168 return NULL; 169 } 170 if (_field_cache == NULL) { 171 assert(!is_java_lang_Object(), "Object has no fields"); 172 Arena* arena = CURRENT_ENV->arena(); 173 _field_cache = new (arena) ciConstantPoolCache(arena, 5); 174 } 175 return _field_cache; 176 } 177 178 // ------------------------------------------------------------------ 179 // ciInstanceKlass::get_canonical_holder 180 // 181 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) { 182 #ifdef ASSERT 183 if (!(offset >= 0 && offset < layout_helper())) { 184 tty->print("*** get_canonical_holder(%d) on ", offset); 185 this->print(); 186 tty->print_cr(" ***"); 187 }; 188 assert(offset >= 0 && offset < layout_helper(), "offset must be tame"); 189 #endif 190 191 if (offset < instanceOopDesc::base_offset_in_bytes()) { 192 // All header offsets belong properly to java/lang/Object. 193 return CURRENT_ENV->Object_klass(); 194 } 195 196 ciInstanceKlass* self = this; 197 for (;;) { 198 assert(self->is_loaded(), "must be loaded to have size"); 199 ciInstanceKlass* super = self->super(); 200 if (super == NULL || super->nof_nonstatic_fields() == 0 || 201 !super->contains_field_offset(offset)) { 202 return self; 203 } else { 204 self = super; // return super->get_canonical_holder(offset) 205 } 206 } 207 } 208 209 // ------------------------------------------------------------------ 210 // ciInstanceKlass::is_java_lang_Object 211 // 212 // Is this klass java.lang.Object? 213 bool ciInstanceKlass::is_java_lang_Object() const { 214 return equals(CURRENT_ENV->Object_klass()); 215 } 216 217 // ------------------------------------------------------------------ 218 // ciInstanceKlass::uses_default_loader 219 bool ciInstanceKlass::uses_default_loader() const { 220 // Note: We do not need to resolve the handle or enter the VM 221 // in order to test null-ness. 222 return _loader == NULL; 223 } 224 225 // ------------------------------------------------------------------ 226 227 /** 228 * Return basic type of boxed value for box klass or T_OBJECT if not. 229 */ 230 BasicType ciInstanceKlass::box_klass_type() const { 231 if (uses_default_loader() && is_loaded()) { 232 return SystemDictionary::box_klass_type(get_Klass()); 233 } else { 234 return T_OBJECT; 235 } 236 } 237 238 /** 239 * Is this boxing klass? 240 */ 241 bool ciInstanceKlass::is_box_klass() const { 242 return is_java_primitive(box_klass_type()); 243 } 244 245 /** 246 * Is this boxed value offset? 247 */ 248 bool ciInstanceKlass::is_boxed_value_offset(int offset) const { 249 BasicType bt = box_klass_type(); 250 return is_java_primitive(bt) && 251 (offset == java_lang_boxing_object::value_offset_in_bytes(bt)); 252 } 253 254 // ------------------------------------------------------------------ 255 // ciInstanceKlass::is_in_package 256 // 257 // Is this klass in the given package? 258 bool ciInstanceKlass::is_in_package(const char* packagename, int len) { 259 // To avoid class loader mischief, this test always rejects application classes. 260 if (!uses_default_loader()) 261 return false; 262 GUARDED_VM_ENTRY( 263 return is_in_package_impl(packagename, len); 264 ) 265 } 266 267 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) { 268 ASSERT_IN_VM; 269 270 // If packagename contains trailing '/' exclude it from the 271 // prefix-test since we test for it explicitly. 272 if (packagename[len - 1] == '/') 273 len--; 274 275 if (!name()->starts_with(packagename, len)) 276 return false; 277 278 // Test if the class name is something like "java/lang". 279 if ((len + 1) > name()->utf8_length()) 280 return false; 281 282 // Test for trailing '/' 283 if ((char) name()->byte_at(len) != '/') 284 return false; 285 286 // Make sure it's not actually in a subpackage: 287 if (name()->index_of_at(len+1, "/", 1) >= 0) 288 return false; 289 290 return true; 291 } 292 293 // ------------------------------------------------------------------ 294 // ciInstanceKlass::print_impl 295 // 296 // Implementation of the print method. 297 void ciInstanceKlass::print_impl(outputStream* st) { 298 ciKlass::print_impl(st); 299 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i((address)loader()));) 300 if (is_loaded()) { 301 st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=", 302 bool_to_str(is_initialized()), 303 bool_to_str(has_finalizer()), 304 bool_to_str(has_subklass()), 305 layout_helper()); 306 307 _flags.print_klass_flags(); 308 309 if (_super) { 310 st->print(" super="); 311 _super->print_name(); 312 } 313 if (_java_mirror) { 314 st->print(" mirror=PRESENT"); 315 } 316 } else { 317 st->print(" loaded=false"); 318 } 319 } 320 321 // ------------------------------------------------------------------ 322 // ciInstanceKlass::super 323 // 324 // Get the superklass of this klass. 325 ciInstanceKlass* ciInstanceKlass::super() { 326 assert(is_loaded(), "must be loaded"); 327 if (_super == NULL && !is_java_lang_Object()) { 328 GUARDED_VM_ENTRY( 329 Klass* super_klass = get_instanceKlass()->super(); 330 _super = CURRENT_ENV->get_instance_klass(super_klass); 331 ) 332 } 333 return _super; 334 } 335 336 // ------------------------------------------------------------------ 337 // ciInstanceKlass::java_mirror 338 // 339 // Get the instance of java.lang.Class corresponding to this klass. 340 // Cache it on this->_java_mirror. 341 ciInstance* ciInstanceKlass::java_mirror() { 342 if (is_shared()) { 343 return ciKlass::java_mirror(); 344 } 345 if (_java_mirror == NULL) { 346 _java_mirror = ciKlass::java_mirror(); 347 } 348 return _java_mirror; 349 } 350 351 // ------------------------------------------------------------------ 352 // ciInstanceKlass::unique_concrete_subklass 353 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() { 354 if (!is_loaded()) return NULL; // No change if class is not loaded 355 if (!is_abstract()) return NULL; // Only applies to abstract classes. 356 if (!has_subklass()) return NULL; // Must have at least one subklass. 357 VM_ENTRY_MARK; 358 InstanceKlass* ik = get_instanceKlass(); 359 Klass* up = ik->up_cast_abstract(); 360 assert(up->is_instance_klass(), "must be InstanceKlass"); 361 if (ik == up) { 362 return NULL; 363 } 364 return CURRENT_THREAD_ENV->get_instance_klass(up); 365 } 366 367 // ------------------------------------------------------------------ 368 // ciInstanceKlass::has_finalizable_subclass 369 bool ciInstanceKlass::has_finalizable_subclass() { 370 if (!is_loaded()) return true; 371 VM_ENTRY_MARK; 372 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL; 373 } 374 375 // ------------------------------------------------------------------ 376 // ciInstanceKlass::get_field_by_offset 377 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) { 378 if (!is_static) { 379 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) { 380 ciField* field = _nonstatic_fields->at(i); 381 int field_off = field->offset_in_bytes(); 382 if (field_off == field_offset) 383 return field; 384 if (field_off > field_offset) 385 break; 386 // could do binary search or check bins, but probably not worth it 387 } 388 return NULL; 389 } 390 VM_ENTRY_MARK; 391 InstanceKlass* k = get_instanceKlass(); 392 fieldDescriptor fd; 393 if (!k->find_field_from_offset(field_offset, is_static, &fd)) { 394 return NULL; 395 } 396 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); 397 return field; 398 } 399 400 // ------------------------------------------------------------------ 401 // ciInstanceKlass::get_field_by_name 402 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) { 403 VM_ENTRY_MARK; 404 InstanceKlass* k = get_instanceKlass(); 405 fieldDescriptor fd; 406 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd); 407 if (def == NULL) { 408 return NULL; 409 } 410 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); 411 return field; 412 } 413 414 415 static int sort_field_by_offset(ciField** a, ciField** b) { 416 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes(); 417 // (no worries about 32-bit overflow...) 418 } 419 420 // ------------------------------------------------------------------ 421 // ciInstanceKlass::compute_nonstatic_fields 422 int ciInstanceKlass::compute_nonstatic_fields() { 423 assert(is_loaded(), "must be loaded"); 424 425 if (_nonstatic_fields != NULL) 426 return _nonstatic_fields->length(); 427 428 if (!has_nonstatic_fields()) { 429 Arena* arena = CURRENT_ENV->arena(); 430 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL); 431 return 0; 432 } 433 assert(!is_java_lang_Object(), "bootstrap OK"); 434 435 // Size in bytes of my fields, including inherited fields. 436 int fsize = nonstatic_field_size() * heapOopSize; 437 438 ciInstanceKlass* super = this->super(); 439 GrowableArray<ciField*>* super_fields = NULL; 440 if (super != NULL && super->has_nonstatic_fields()) { 441 int super_fsize = super->nonstatic_field_size() * heapOopSize; 442 int super_flen = super->nof_nonstatic_fields(); 443 super_fields = super->_nonstatic_fields; 444 assert(super_flen == 0 || super_fields != NULL, "first get nof_fields"); 445 // See if I am no larger than my super; if so, I can use his fields. 446 if (fsize == super_fsize) { 447 _nonstatic_fields = super_fields; 448 return super_fields->length(); 449 } 450 } 451 452 GrowableArray<ciField*>* fields = NULL; 453 GUARDED_VM_ENTRY({ 454 fields = compute_nonstatic_fields_impl(super_fields); 455 }); 456 457 if (fields == NULL) { 458 // This can happen if this class (java.lang.Class) has invisible fields. 459 if (super_fields != NULL) { 460 _nonstatic_fields = super_fields; 461 return super_fields->length(); 462 } else { 463 return 0; 464 } 465 } 466 467 int flen = fields->length(); 468 469 // Now sort them by offset, ascending. 470 // (In principle, they could mix with superclass fields.) 471 fields->sort(sort_field_by_offset); 472 _nonstatic_fields = fields; 473 return flen; 474 } 475 476 GrowableArray<ciField*>* 477 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>* 478 super_fields) { 479 ASSERT_IN_VM; 480 Arena* arena = CURRENT_ENV->arena(); 481 int flen = 0; 482 GrowableArray<ciField*>* fields = NULL; 483 InstanceKlass* k = get_instanceKlass(); 484 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { 485 if (fs.access_flags().is_static()) continue; 486 flen += 1; 487 } 488 489 // allocate the array: 490 if (flen == 0) { 491 return NULL; // return nothing if none are locally declared 492 } 493 if (super_fields != NULL) { 494 flen += super_fields->length(); 495 } 496 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL); 497 if (super_fields != NULL) { 498 fields->appendAll(super_fields); 499 } 500 501 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { 502 if (fs.access_flags().is_static()) continue; 503 fieldDescriptor& fd = fs.field_descriptor(); 504 ciField* field = new (arena) ciField(&fd); 505 fields->append(field); 506 } 507 assert(fields->length() == flen, "sanity"); 508 return fields; 509 } 510 511 bool ciInstanceKlass::compute_injected_fields_helper() { 512 ASSERT_IN_VM; 513 InstanceKlass* k = get_instanceKlass(); 514 515 for (InternalFieldStream fs(k); !fs.done(); fs.next()) { 516 if (fs.access_flags().is_static()) continue; 517 return true; 518 } 519 return false; 520 } 521 522 void ciInstanceKlass::compute_injected_fields() { 523 assert(is_loaded(), "must be loaded"); 524 525 int has_injected_fields = 0; 526 if (super() != NULL && super()->has_injected_fields()) { 527 has_injected_fields = 1; 528 } else { 529 GUARDED_VM_ENTRY({ 530 has_injected_fields = compute_injected_fields_helper() ? 1 : 0; 531 }); 532 } 533 // may be concurrently initialized for shared ciInstanceKlass objects 534 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization"); 535 _has_injected_fields = has_injected_fields; 536 } 537 538 // ------------------------------------------------------------------ 539 // ciInstanceKlass::find_method 540 // 541 // Find a method in this klass. 542 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) { 543 VM_ENTRY_MARK; 544 InstanceKlass* k = get_instanceKlass(); 545 Symbol* name_sym = name->get_symbol(); 546 Symbol* sig_sym= signature->get_symbol(); 547 548 Method* m = k->find_method(name_sym, sig_sym); 549 if (m == NULL) return NULL; 550 551 return CURRENT_THREAD_ENV->get_method(m); 552 } 553 554 // ------------------------------------------------------------------ 555 // ciInstanceKlass::is_leaf_type 556 bool ciInstanceKlass::is_leaf_type() { 557 assert(is_loaded(), "must be loaded"); 558 if (is_shared()) { 559 return is_final(); // approximately correct 560 } else { 561 return !_has_subklass && (nof_implementors() == 0); 562 } 563 } 564 565 // ------------------------------------------------------------------ 566 // ciInstanceKlass::implementor 567 // 568 // Report an implementor of this interface. 569 // Note that there are various races here, since my copy 570 // of _nof_implementors might be out of date with respect 571 // to results returned by InstanceKlass::implementor. 572 // This is OK, since any dependencies we decide to assert 573 // will be checked later under the Compile_lock. 574 ciInstanceKlass* ciInstanceKlass::implementor() { 575 ciInstanceKlass* impl = _implementor; 576 if (impl == NULL) { 577 // Go into the VM to fetch the implementor. 578 { 579 VM_ENTRY_MARK; 580 Klass* k = get_instanceKlass()->implementor(); 581 if (k != NULL) { 582 if (k == get_instanceKlass()) { 583 // More than one implementors. Use 'this' in this case. 584 impl = this; 585 } else { 586 impl = CURRENT_THREAD_ENV->get_instance_klass(k); 587 } 588 } 589 } 590 // Memoize this result. 591 if (!is_shared()) { 592 _implementor = impl; 593 } 594 } 595 return impl; 596 } 597 598 // Utility class for printing of the contents of the static fields for 599 // use by compilation replay. It only prints out the information that 600 // could be consumed by the compiler, so for primitive types it prints 601 // out the actual value. For Strings it's the actual string value. 602 // For array types it it's first level array size since that's the 603 // only value which statically unchangeable. For all other reference 604 // types it simply prints out the dynamic type. 605 606 class StaticFinalFieldPrinter : public FieldClosure { 607 outputStream* _out; 608 const char* _holder; 609 public: 610 StaticFinalFieldPrinter(outputStream* out, const char* holder) : 611 _out(out), 612 _holder(holder) { 613 } 614 void do_field(fieldDescriptor* fd) { 615 if (fd->is_final() && !fd->has_initial_value()) { 616 ResourceMark rm; 617 oop mirror = fd->field_holder()->java_mirror(); 618 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii()); 619 switch (fd->field_type()) { 620 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break; 621 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break; 622 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break; 623 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break; 624 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break; 625 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break; 626 case T_FLOAT: { 627 float f = mirror->float_field(fd->offset()); 628 _out->print_cr("%d", *(int*)&f); 629 break; 630 } 631 case T_DOUBLE: { 632 double d = mirror->double_field(fd->offset()); 633 _out->print_cr(INT64_FORMAT, *(int64_t*)&d); 634 break; 635 } 636 case T_ARRAY: { 637 oop value = mirror->obj_field_acquire(fd->offset()); 638 if (value == NULL) { 639 _out->print_cr("null"); 640 } else { 641 typeArrayOop ta = (typeArrayOop)value; 642 _out->print("%d", ta->length()); 643 if (value->is_objArray()) { 644 objArrayOop oa = (objArrayOop)value; 645 const char* klass_name = value->klass()->name()->as_quoted_ascii(); 646 _out->print(" %s", klass_name); 647 } 648 _out->cr(); 649 } 650 break; 651 } 652 case T_OBJECT: { 653 oop value = mirror->obj_field_acquire(fd->offset()); 654 if (value == NULL) { 655 _out->print_cr("null"); 656 } else if (value->is_instance()) { 657 if (value->is_a(SystemDictionary::String_klass())) { 658 _out->print("\""); 659 _out->print_raw(java_lang_String::as_quoted_ascii(value)); 660 _out->print_cr("\""); 661 } else { 662 const char* klass_name = value->klass()->name()->as_quoted_ascii(); 663 _out->print_cr("%s", klass_name); 664 } 665 } else { 666 ShouldNotReachHere(); 667 } 668 break; 669 } 670 default: 671 ShouldNotReachHere(); 672 } 673 } 674 } 675 }; 676 677 678 void ciInstanceKlass::dump_replay_data(outputStream* out) { 679 ResourceMark rm; 680 681 InstanceKlass* ik = get_instanceKlass(); 682 ConstantPool* cp = ik->constants(); 683 684 // Try to record related loaded classes 685 Klass* sub = ik->subklass(); 686 while (sub != NULL) { 687 if (sub->is_instance_klass()) { 688 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii()); 689 } 690 sub = sub->next_sibling(); 691 } 692 693 // Dump out the state of the constant pool tags. During replay the 694 // tags will be validated for things which shouldn't change and 695 // classes will be resolved if the tags indicate that they were 696 // resolved at compile time. 697 out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(), 698 is_linked(), is_initialized(), cp->length()); 699 for (int index = 1; index < cp->length(); index++) { 700 out->print(" %d", cp->tags()->at(index)); 701 } 702 out->cr(); 703 if (is_initialized()) { 704 // Dump out the static final fields in case the compilation relies 705 // on their value for correct replay. 706 StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii()); 707 ik->do_local_static_fields(&sffp); 708 } 709 }