1 /* 2 * Copyright (c) 1999, 2017, 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 #if INCLUDE_ALL_GCS 38 # include "gc/g1/g1SATBCardTableModRefBS.hpp" 39 #endif 40 41 // ciInstanceKlass 42 // 43 // This class represents a Klass* in the HotSpot virtual machine 44 // whose Klass part in an InstanceKlass. 45 46 // ------------------------------------------------------------------ 47 // ensure_metadata_alive 48 // 49 // Ensure that the metadata wrapped by the ciMetadata is kept alive by GC. 50 // This is primarily useful for metadata which is considered as weak roots 51 // by the GC but need to be strong roots if reachable from a current compilation. 52 // InstanceKlass are created for both weak and strong metadata. Ensuring this metadata 53 // alive covers the cases where there are weak roots without performance cost. 54 // 55 static void ensure_metadata_alive(oop metadata_holder) { 56 #if INCLUDE_ALL_GCS 57 if (!UseG1GC) { 58 return; 59 } 60 if (metadata_holder != NULL) { 61 G1SATBCardTableModRefBS::enqueue(metadata_holder); 62 } 63 #endif 64 } 65 66 67 // ------------------------------------------------------------------ 68 // ciInstanceKlass::ciInstanceKlass 69 // 70 // Loaded instance klass. 71 ciInstanceKlass::ciInstanceKlass(Klass* k) : 72 ciKlass(k) 73 { 74 assert(get_Klass()->is_instance_klass(), "wrong type"); 75 assert(get_instanceKlass()->is_loaded(), "must be at least loaded"); 76 InstanceKlass* ik = get_instanceKlass(); 77 78 AccessFlags access_flags = ik->access_flags(); 79 _flags = ciFlags(access_flags); 80 _has_finalizer = access_flags.has_finalizer(); 81 _has_subklass = ik->subklass() != NULL; 82 _init_state = ik->init_state(); 83 _nonstatic_field_size = ik->nonstatic_field_size(); 84 _has_nonstatic_fields = ik->has_nonstatic_fields(); 85 _has_nonstatic_concrete_methods = ik->has_nonstatic_concrete_methods(); 86 _is_anonymous = ik->is_anonymous(); 87 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields: 88 _has_injected_fields = -1; 89 _implementor = NULL; // we will fill these lazily 90 91 oop holder = ik->klass_holder(); 92 ensure_metadata_alive(holder); 93 if (ik->is_anonymous()) { 94 // Though ciInstanceKlass records class loader oop, it's not enough to keep 95 // VM anonymous classes alive (loader == NULL). Klass holder should be used instead. 96 // It is enough to record a ciObject, since cached elements are never removed 97 // during ciObjectFactory lifetime. ciObjectFactory itself is created for 98 // every compilation and lives for the whole duration of the compilation. 99 ciObject* h = CURRENT_ENV->get_object(holder); 100 } 101 102 Thread *thread = Thread::current(); 103 if (ciObjectFactory::is_initialized()) { 104 _loader = JNIHandles::make_local(thread, ik->class_loader()); 105 _protection_domain = JNIHandles::make_local(thread, 106 ik->protection_domain()); 107 _is_shared = false; 108 } else { 109 Handle h_loader(thread, ik->class_loader()); 110 Handle h_protection_domain(thread, ik->protection_domain()); 111 _loader = JNIHandles::make_global(h_loader); 112 _protection_domain = JNIHandles::make_global(h_protection_domain); 113 _is_shared = true; 114 } 115 116 // Lazy fields get filled in only upon request. 117 _super = NULL; 118 _java_mirror = NULL; 119 120 if (is_shared()) { 121 if (k != SystemDictionary::Object_klass()) { 122 super(); 123 } 124 //compute_nonstatic_fields(); // done outside of constructor 125 } 126 127 _field_cache = NULL; 128 } 129 130 // Version for unloaded classes: 131 ciInstanceKlass::ciInstanceKlass(ciSymbol* name, 132 jobject loader, jobject protection_domain) 133 : ciKlass(name, T_OBJECT) 134 { 135 assert(name->byte_at(0) != '[', "not an instance klass"); 136 _init_state = (InstanceKlass::ClassState)0; 137 _nonstatic_field_size = -1; 138 _has_nonstatic_fields = false; 139 _nonstatic_fields = NULL; 140 _has_injected_fields = -1; 141 _is_anonymous = false; 142 _loader = loader; 143 _protection_domain = protection_domain; 144 _is_shared = false; 145 _super = NULL; 146 _java_mirror = NULL; 147 _field_cache = NULL; 148 } 149 150 151 152 // ------------------------------------------------------------------ 153 // ciInstanceKlass::compute_shared_is_initialized 154 void ciInstanceKlass::compute_shared_init_state() { 155 GUARDED_VM_ENTRY( 156 InstanceKlass* ik = get_instanceKlass(); 157 _init_state = ik->init_state(); 158 ) 159 } 160 161 // ------------------------------------------------------------------ 162 // ciInstanceKlass::compute_shared_has_subklass 163 bool ciInstanceKlass::compute_shared_has_subklass() { 164 GUARDED_VM_ENTRY( 165 InstanceKlass* ik = get_instanceKlass(); 166 _has_subklass = ik->subklass() != NULL; 167 return _has_subklass; 168 ) 169 } 170 171 // ------------------------------------------------------------------ 172 // ciInstanceKlass::loader 173 oop ciInstanceKlass::loader() { 174 ASSERT_IN_VM; 175 return JNIHandles::resolve(_loader); 176 } 177 178 // ------------------------------------------------------------------ 179 // ciInstanceKlass::loader_handle 180 jobject ciInstanceKlass::loader_handle() { 181 return _loader; 182 } 183 184 // ------------------------------------------------------------------ 185 // ciInstanceKlass::protection_domain 186 oop ciInstanceKlass::protection_domain() { 187 ASSERT_IN_VM; 188 return JNIHandles::resolve(_protection_domain); 189 } 190 191 // ------------------------------------------------------------------ 192 // ciInstanceKlass::protection_domain_handle 193 jobject ciInstanceKlass::protection_domain_handle() { 194 return _protection_domain; 195 } 196 197 // ------------------------------------------------------------------ 198 // ciInstanceKlass::field_cache 199 // 200 // Get the field cache associated with this klass. 201 ciConstantPoolCache* ciInstanceKlass::field_cache() { 202 if (is_shared()) { 203 return NULL; 204 } 205 if (_field_cache == NULL) { 206 assert(!is_java_lang_Object(), "Object has no fields"); 207 Arena* arena = CURRENT_ENV->arena(); 208 _field_cache = new (arena) ciConstantPoolCache(arena, 5); 209 } 210 return _field_cache; 211 } 212 213 // ------------------------------------------------------------------ 214 // ciInstanceKlass::get_canonical_holder 215 // 216 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) { 217 #ifdef ASSERT 218 if (!(offset >= 0 && offset < layout_helper())) { 219 tty->print("*** get_canonical_holder(%d) on ", offset); 220 this->print(); 221 tty->print_cr(" ***"); 222 }; 223 assert(offset >= 0 && offset < layout_helper(), "offset must be tame"); 224 #endif 225 226 if (offset < instanceOopDesc::base_offset_in_bytes()) { 227 // All header offsets belong properly to java/lang/Object. 228 return CURRENT_ENV->Object_klass(); 229 } 230 231 ciInstanceKlass* self = this; 232 for (;;) { 233 assert(self->is_loaded(), "must be loaded to have size"); 234 ciInstanceKlass* super = self->super(); 235 if (super == NULL || super->nof_nonstatic_fields() == 0 || 236 !super->contains_field_offset(offset)) { 237 return self; 238 } else { 239 self = super; // return super->get_canonical_holder(offset) 240 } 241 } 242 } 243 244 // ------------------------------------------------------------------ 245 // ciInstanceKlass::is_java_lang_Object 246 // 247 // Is this klass java.lang.Object? 248 bool ciInstanceKlass::is_java_lang_Object() const { 249 return equals(CURRENT_ENV->Object_klass()); 250 } 251 252 // ------------------------------------------------------------------ 253 // ciInstanceKlass::uses_default_loader 254 bool ciInstanceKlass::uses_default_loader() const { 255 // Note: We do not need to resolve the handle or enter the VM 256 // in order to test null-ness. 257 return _loader == NULL; 258 } 259 260 // ------------------------------------------------------------------ 261 262 /** 263 * Return basic type of boxed value for box klass or T_OBJECT if not. 264 */ 265 BasicType ciInstanceKlass::box_klass_type() const { 266 if (uses_default_loader() && is_loaded()) { 267 return SystemDictionary::box_klass_type(get_Klass()); 268 } else { 269 return T_OBJECT; 270 } 271 } 272 273 /** 274 * Is this boxing klass? 275 */ 276 bool ciInstanceKlass::is_box_klass() const { 277 return is_java_primitive(box_klass_type()); 278 } 279 280 /** 281 * Is this boxed value offset? 282 */ 283 bool ciInstanceKlass::is_boxed_value_offset(int offset) const { 284 BasicType bt = box_klass_type(); 285 return is_java_primitive(bt) && 286 (offset == java_lang_boxing_object::value_offset_in_bytes(bt)); 287 } 288 289 // ------------------------------------------------------------------ 290 // ciInstanceKlass::is_in_package 291 // 292 // Is this klass in the given package? 293 bool ciInstanceKlass::is_in_package(const char* packagename, int len) { 294 // To avoid class loader mischief, this test always rejects application classes. 295 if (!uses_default_loader()) 296 return false; 297 GUARDED_VM_ENTRY( 298 return is_in_package_impl(packagename, len); 299 ) 300 } 301 302 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) { 303 ASSERT_IN_VM; 304 305 // If packagename contains trailing '/' exclude it from the 306 // prefix-test since we test for it explicitly. 307 if (packagename[len - 1] == '/') 308 len--; 309 310 if (!name()->starts_with(packagename, len)) 311 return false; 312 313 // Test if the class name is something like "java/lang". 314 if ((len + 1) > name()->utf8_length()) 315 return false; 316 317 // Test for trailing '/' 318 if ((char) name()->byte_at(len) != '/') 319 return false; 320 321 // Make sure it's not actually in a subpackage: 322 if (name()->index_of_at(len+1, "/", 1) >= 0) 323 return false; 324 325 return true; 326 } 327 328 // ------------------------------------------------------------------ 329 // ciInstanceKlass::print_impl 330 // 331 // Implementation of the print method. 332 void ciInstanceKlass::print_impl(outputStream* st) { 333 ciKlass::print_impl(st); 334 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i((address)loader()));) 335 if (is_loaded()) { 336 st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=", 337 bool_to_str(is_initialized()), 338 bool_to_str(has_finalizer()), 339 bool_to_str(has_subklass()), 340 layout_helper()); 341 342 _flags.print_klass_flags(); 343 344 if (_super) { 345 st->print(" super="); 346 _super->print_name(); 347 } 348 if (_java_mirror) { 349 st->print(" mirror=PRESENT"); 350 } 351 } else { 352 st->print(" loaded=false"); 353 } 354 } 355 356 // ------------------------------------------------------------------ 357 // ciInstanceKlass::super 358 // 359 // Get the superklass of this klass. 360 ciInstanceKlass* ciInstanceKlass::super() { 361 assert(is_loaded(), "must be loaded"); 362 if (_super == NULL && !is_java_lang_Object()) { 363 GUARDED_VM_ENTRY( 364 Klass* super_klass = get_instanceKlass()->super(); 365 _super = CURRENT_ENV->get_instance_klass(super_klass); 366 ) 367 } 368 return _super; 369 } 370 371 // ------------------------------------------------------------------ 372 // ciInstanceKlass::java_mirror 373 // 374 // Get the instance of java.lang.Class corresponding to this klass. 375 // Cache it on this->_java_mirror. 376 ciInstance* ciInstanceKlass::java_mirror() { 377 if (is_shared()) { 378 return ciKlass::java_mirror(); 379 } 380 if (_java_mirror == NULL) { 381 _java_mirror = ciKlass::java_mirror(); 382 } 383 return _java_mirror; 384 } 385 386 // ------------------------------------------------------------------ 387 // ciInstanceKlass::unique_concrete_subklass 388 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() { 389 if (!is_loaded()) return NULL; // No change if class is not loaded 390 if (!is_abstract()) return NULL; // Only applies to abstract classes. 391 if (!has_subklass()) return NULL; // Must have at least one subklass. 392 VM_ENTRY_MARK; 393 InstanceKlass* ik = get_instanceKlass(); 394 Klass* up = ik->up_cast_abstract(); 395 assert(up->is_instance_klass(), "must be InstanceKlass"); 396 if (ik == up) { 397 return NULL; 398 } 399 return CURRENT_THREAD_ENV->get_instance_klass(up); 400 } 401 402 // ------------------------------------------------------------------ 403 // ciInstanceKlass::has_finalizable_subclass 404 bool ciInstanceKlass::has_finalizable_subclass() { 405 if (!is_loaded()) return true; 406 VM_ENTRY_MARK; 407 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL; 408 } 409 410 // ------------------------------------------------------------------ 411 // ciInstanceKlass::get_field_by_offset 412 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) { 413 if (!is_static) { 414 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) { 415 ciField* field = _nonstatic_fields->at(i); 416 int field_off = field->offset_in_bytes(); 417 if (field_off == field_offset) 418 return field; 419 if (field_off > field_offset) 420 break; 421 // could do binary search or check bins, but probably not worth it 422 } 423 return NULL; 424 } 425 VM_ENTRY_MARK; 426 InstanceKlass* k = get_instanceKlass(); 427 fieldDescriptor fd; 428 if (!k->find_field_from_offset(field_offset, is_static, &fd)) { 429 return NULL; 430 } 431 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); 432 return field; 433 } 434 435 // ------------------------------------------------------------------ 436 // ciInstanceKlass::get_field_by_name 437 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) { 438 VM_ENTRY_MARK; 439 InstanceKlass* k = get_instanceKlass(); 440 fieldDescriptor fd; 441 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd); 442 if (def == NULL) { 443 return NULL; 444 } 445 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); 446 return field; 447 } 448 449 450 static int sort_field_by_offset(ciField** a, ciField** b) { 451 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes(); 452 // (no worries about 32-bit overflow...) 453 } 454 455 // ------------------------------------------------------------------ 456 // ciInstanceKlass::compute_nonstatic_fields 457 int ciInstanceKlass::compute_nonstatic_fields() { 458 assert(is_loaded(), "must be loaded"); 459 460 if (_nonstatic_fields != NULL) 461 return _nonstatic_fields->length(); 462 463 if (!has_nonstatic_fields()) { 464 Arena* arena = CURRENT_ENV->arena(); 465 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL); 466 return 0; 467 } 468 assert(!is_java_lang_Object(), "bootstrap OK"); 469 470 // Size in bytes of my fields, including inherited fields. 471 int fsize = nonstatic_field_size() * heapOopSize; 472 473 ciInstanceKlass* super = this->super(); 474 GrowableArray<ciField*>* super_fields = NULL; 475 if (super != NULL && super->has_nonstatic_fields()) { 476 int super_fsize = super->nonstatic_field_size() * heapOopSize; 477 int super_flen = super->nof_nonstatic_fields(); 478 super_fields = super->_nonstatic_fields; 479 assert(super_flen == 0 || super_fields != NULL, "first get nof_fields"); 480 // See if I am no larger than my super; if so, I can use his fields. 481 if (fsize == super_fsize) { 482 _nonstatic_fields = super_fields; 483 return super_fields->length(); 484 } 485 } 486 487 GrowableArray<ciField*>* fields = NULL; 488 GUARDED_VM_ENTRY({ 489 fields = compute_nonstatic_fields_impl(super_fields); 490 }); 491 492 if (fields == NULL) { 493 // This can happen if this class (java.lang.Class) has invisible fields. 494 if (super_fields != NULL) { 495 _nonstatic_fields = super_fields; 496 return super_fields->length(); 497 } else { 498 return 0; 499 } 500 } 501 502 int flen = fields->length(); 503 504 // Now sort them by offset, ascending. 505 // (In principle, they could mix with superclass fields.) 506 fields->sort(sort_field_by_offset); 507 _nonstatic_fields = fields; 508 return flen; 509 } 510 511 GrowableArray<ciField*>* 512 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>* 513 super_fields) { 514 ASSERT_IN_VM; 515 Arena* arena = CURRENT_ENV->arena(); 516 int flen = 0; 517 GrowableArray<ciField*>* fields = NULL; 518 InstanceKlass* k = get_instanceKlass(); 519 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { 520 if (fs.access_flags().is_static()) continue; 521 flen += 1; 522 } 523 524 // allocate the array: 525 if (flen == 0) { 526 return NULL; // return nothing if none are locally declared 527 } 528 if (super_fields != NULL) { 529 flen += super_fields->length(); 530 } 531 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL); 532 if (super_fields != NULL) { 533 fields->appendAll(super_fields); 534 } 535 536 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { 537 if (fs.access_flags().is_static()) continue; 538 fieldDescriptor& fd = fs.field_descriptor(); 539 ciField* field = new (arena) ciField(&fd); 540 fields->append(field); 541 } 542 assert(fields->length() == flen, "sanity"); 543 return fields; 544 } 545 546 bool ciInstanceKlass::compute_injected_fields_helper() { 547 ASSERT_IN_VM; 548 InstanceKlass* k = get_instanceKlass(); 549 550 for (InternalFieldStream fs(k); !fs.done(); fs.next()) { 551 if (fs.access_flags().is_static()) continue; 552 return true; 553 } 554 return false; 555 } 556 557 void ciInstanceKlass::compute_injected_fields() { 558 assert(is_loaded(), "must be loaded"); 559 560 int has_injected_fields = 0; 561 if (super() != NULL && super()->has_injected_fields()) { 562 has_injected_fields = 1; 563 } else { 564 GUARDED_VM_ENTRY({ 565 has_injected_fields = compute_injected_fields_helper() ? 1 : 0; 566 }); 567 } 568 // may be concurrently initialized for shared ciInstanceKlass objects 569 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization"); 570 _has_injected_fields = has_injected_fields; 571 } 572 573 // ------------------------------------------------------------------ 574 // ciInstanceKlass::find_method 575 // 576 // Find a method in this klass. 577 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) { 578 VM_ENTRY_MARK; 579 InstanceKlass* k = get_instanceKlass(); 580 Symbol* name_sym = name->get_symbol(); 581 Symbol* sig_sym= signature->get_symbol(); 582 583 Method* m = k->find_method(name_sym, sig_sym); 584 if (m == NULL) return NULL; 585 586 return CURRENT_THREAD_ENV->get_method(m); 587 } 588 589 // ------------------------------------------------------------------ 590 // ciInstanceKlass::is_leaf_type 591 bool ciInstanceKlass::is_leaf_type() { 592 assert(is_loaded(), "must be loaded"); 593 if (is_shared()) { 594 return is_final(); // approximately correct 595 } else { 596 return !_has_subklass && (nof_implementors() == 0); 597 } 598 } 599 600 // ------------------------------------------------------------------ 601 // ciInstanceKlass::implementor 602 // 603 // Report an implementor of this interface. 604 // Note that there are various races here, since my copy 605 // of _nof_implementors might be out of date with respect 606 // to results returned by InstanceKlass::implementor. 607 // This is OK, since any dependencies we decide to assert 608 // will be checked later under the Compile_lock. 609 ciInstanceKlass* ciInstanceKlass::implementor() { 610 ciInstanceKlass* impl = _implementor; 611 if (impl == NULL) { 612 // Go into the VM to fetch the implementor. 613 { 614 VM_ENTRY_MARK; 615 Klass* k = get_instanceKlass()->implementor(); 616 if (k != NULL) { 617 if (k == get_instanceKlass()) { 618 // More than one implementors. Use 'this' in this case. 619 impl = this; 620 } else { 621 impl = CURRENT_THREAD_ENV->get_instance_klass(k); 622 } 623 } 624 } 625 // Memoize this result. 626 if (!is_shared()) { 627 _implementor = impl; 628 } 629 } 630 return impl; 631 } 632 633 ciInstanceKlass* ciInstanceKlass::host_klass() { 634 assert(is_loaded(), "must be loaded"); 635 if (is_anonymous()) { 636 VM_ENTRY_MARK 637 Klass* host_klass = get_instanceKlass()->host_klass(); 638 return CURRENT_ENV->get_instance_klass(host_klass); 639 } 640 return NULL; 641 } 642 643 // Utility class for printing of the contents of the static fields for 644 // use by compilation replay. It only prints out the information that 645 // could be consumed by the compiler, so for primitive types it prints 646 // out the actual value. For Strings it's the actual string value. 647 // For array types it it's first level array size since that's the 648 // only value which statically unchangeable. For all other reference 649 // types it simply prints out the dynamic type. 650 651 class StaticFinalFieldPrinter : public FieldClosure { 652 outputStream* _out; 653 const char* _holder; 654 public: 655 StaticFinalFieldPrinter(outputStream* out, const char* holder) : 656 _out(out), 657 _holder(holder) { 658 } 659 void do_field(fieldDescriptor* fd) { 660 if (fd->is_final() && !fd->has_initial_value()) { 661 ResourceMark rm; 662 oop mirror = fd->field_holder()->java_mirror(); 663 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii()); 664 switch (fd->field_type()) { 665 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break; 666 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break; 667 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break; 668 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break; 669 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break; 670 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break; 671 case T_FLOAT: { 672 float f = mirror->float_field(fd->offset()); 673 _out->print_cr("%d", *(int*)&f); 674 break; 675 } 676 case T_DOUBLE: { 677 double d = mirror->double_field(fd->offset()); 678 _out->print_cr(INT64_FORMAT, *(int64_t*)&d); 679 break; 680 } 681 case T_ARRAY: { 682 oop value = mirror->obj_field_acquire(fd->offset()); 683 if (value == NULL) { 684 _out->print_cr("null"); 685 } else { 686 typeArrayOop ta = (typeArrayOop)value; 687 _out->print("%d", ta->length()); 688 if (value->is_objArray()) { 689 objArrayOop oa = (objArrayOop)value; 690 const char* klass_name = value->klass()->name()->as_quoted_ascii(); 691 _out->print(" %s", klass_name); 692 } 693 _out->cr(); 694 } 695 break; 696 } 697 case T_OBJECT: { 698 oop value = mirror->obj_field_acquire(fd->offset()); 699 if (value == NULL) { 700 _out->print_cr("null"); 701 } else if (value->is_instance()) { 702 if (value->is_a(SystemDictionary::String_klass())) { 703 const char* ascii_value = java_lang_String::as_quoted_ascii(value); 704 _out->print("\"%s\"", (ascii_value != NULL) ? ascii_value : ""); 705 } else { 706 const char* klass_name = value->klass()->name()->as_quoted_ascii(); 707 _out->print_cr("%s", klass_name); 708 } 709 } else { 710 ShouldNotReachHere(); 711 } 712 break; 713 } 714 default: 715 ShouldNotReachHere(); 716 } 717 } 718 } 719 }; 720 721 722 void ciInstanceKlass::dump_replay_data(outputStream* out) { 723 ResourceMark rm; 724 725 InstanceKlass* ik = get_instanceKlass(); 726 ConstantPool* cp = ik->constants(); 727 728 // Try to record related loaded classes 729 Klass* sub = ik->subklass(); 730 while (sub != NULL) { 731 if (sub->is_instance_klass()) { 732 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii()); 733 } 734 sub = sub->next_sibling(); 735 } 736 737 // Dump out the state of the constant pool tags. During replay the 738 // tags will be validated for things which shouldn't change and 739 // classes will be resolved if the tags indicate that they were 740 // resolved at compile time. 741 out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(), 742 is_linked(), is_initialized(), cp->length()); 743 for (int index = 1; index < cp->length(); index++) { 744 out->print(" %d", cp->tags()->at(index)); 745 } 746 out->cr(); 747 if (is_initialized()) { 748 // Dump out the static final fields in case the compilation relies 749 // on their value for correct replay. 750 StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii()); 751 ik->do_local_static_fields(&sffp); 752 } 753 }