1 /* 2 * Copyright (c) 1999, 2018, 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 #include "runtime/jniHandles.inline.hpp" 38 39 // ciInstanceKlass 40 // 41 // This class represents a Klass* in the HotSpot virtual machine 42 // whose Klass part in an InstanceKlass. 43 44 45 // ------------------------------------------------------------------ 46 // ciInstanceKlass::ciInstanceKlass 47 // 48 // Loaded instance klass. 49 ciInstanceKlass::ciInstanceKlass(Klass* k) : 50 ciKlass(k) 51 { 52 assert(get_Klass()->is_instance_klass(), "wrong type"); 53 assert(get_instanceKlass()->is_loaded(), "must be at least loaded"); 54 InstanceKlass* ik = get_instanceKlass(); 55 56 AccessFlags access_flags = ik->access_flags(); 57 _flags = ciFlags(access_flags); 58 _has_finalizer = access_flags.has_finalizer(); 59 _has_subklass = ik->subklass() != NULL; 60 _init_state = ik->init_state(); 61 _nonstatic_field_size = ik->nonstatic_field_size(); 62 _has_nonstatic_fields = ik->has_nonstatic_fields(); 63 _has_nonstatic_concrete_methods = ik->has_nonstatic_concrete_methods(); 64 _is_anonymous = ik->is_anonymous(); 65 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields: 66 _has_injected_fields = -1; 67 _implementor = NULL; // we will fill these lazily 68 69 // Ensure that the metadata wrapped by the ciMetadata is kept alive by GC. 70 // This is primarily useful for metadata which is considered as weak roots 71 // by the GC but need to be strong roots if reachable from a current compilation. 72 // InstanceKlass are created for both weak and strong metadata. Ensuring this metadata 73 // alive covers the cases where there are weak roots without performance cost. 74 oop holder = ik->klass_holder_phantom(); 75 if (ik->is_anonymous()) { 76 // Though ciInstanceKlass records class loader oop, it's not enough to keep 77 // VM anonymous classes alive (loader == NULL). Klass holder should be used instead. 78 // It is enough to record a ciObject, since cached elements are never removed 79 // during ciObjectFactory lifetime. ciObjectFactory itself is created for 80 // every compilation and lives for the whole duration of the compilation. 81 assert(holder != NULL, "holder of anonymous class is the mirror which is never null"); 82 (void)CURRENT_ENV->get_object(holder); 83 } 84 85 Thread *thread = Thread::current(); 86 if (ciObjectFactory::is_initialized()) { 87 _loader = JNIHandles::make_local(thread, ik->class_loader()); 88 _protection_domain = JNIHandles::make_local(thread, 89 ik->protection_domain()); 90 _is_shared = false; 91 } else { 92 Handle h_loader(thread, ik->class_loader()); 93 Handle h_protection_domain(thread, ik->protection_domain()); 94 _loader = JNIHandles::make_global(h_loader); 95 _protection_domain = JNIHandles::make_global(h_protection_domain); 96 _is_shared = true; 97 } 98 99 // Lazy fields get filled in only upon request. 100 _super = NULL; 101 _java_mirror = NULL; 102 103 if (is_shared()) { 104 if (k != SystemDictionary::Object_klass()) { 105 super(); 106 } 107 //compute_nonstatic_fields(); // done outside of constructor 108 } 109 110 _field_cache = NULL; 111 } 112 113 // Version for unloaded classes: 114 ciInstanceKlass::ciInstanceKlass(ciSymbol* name, 115 jobject loader, jobject protection_domain) 116 : ciKlass(name, T_OBJECT) 117 { 118 assert(name->byte_at(0) != '[', "not an instance klass"); 119 _init_state = (InstanceKlass::ClassState)0; 120 _nonstatic_field_size = -1; 121 _has_nonstatic_fields = false; 122 _nonstatic_fields = NULL; 123 _has_injected_fields = -1; 124 _is_anonymous = false; 125 _loader = loader; 126 _protection_domain = protection_domain; 127 _is_shared = false; 128 _super = NULL; 129 _java_mirror = NULL; 130 _field_cache = NULL; 131 } 132 133 134 135 // ------------------------------------------------------------------ 136 // ciInstanceKlass::compute_shared_is_initialized 137 void ciInstanceKlass::compute_shared_init_state() { 138 GUARDED_VM_ENTRY( 139 InstanceKlass* ik = get_instanceKlass(); 140 _init_state = ik->init_state(); 141 ) 142 } 143 144 // ------------------------------------------------------------------ 145 // ciInstanceKlass::compute_shared_has_subklass 146 bool ciInstanceKlass::compute_shared_has_subklass() { 147 GUARDED_VM_ENTRY( 148 InstanceKlass* ik = get_instanceKlass(); 149 _has_subklass = ik->subklass() != NULL; 150 return _has_subklass; 151 ) 152 } 153 154 // ------------------------------------------------------------------ 155 // ciInstanceKlass::loader 156 oop ciInstanceKlass::loader() { 157 ASSERT_IN_VM; 158 return JNIHandles::resolve(_loader); 159 } 160 161 // ------------------------------------------------------------------ 162 // ciInstanceKlass::loader_handle 163 jobject ciInstanceKlass::loader_handle() { 164 return _loader; 165 } 166 167 // ------------------------------------------------------------------ 168 // ciInstanceKlass::protection_domain 169 oop ciInstanceKlass::protection_domain() { 170 ASSERT_IN_VM; 171 return JNIHandles::resolve(_protection_domain); 172 } 173 174 // ------------------------------------------------------------------ 175 // ciInstanceKlass::protection_domain_handle 176 jobject ciInstanceKlass::protection_domain_handle() { 177 return _protection_domain; 178 } 179 180 // ------------------------------------------------------------------ 181 // ciInstanceKlass::field_cache 182 // 183 // Get the field cache associated with this klass. 184 ciConstantPoolCache* ciInstanceKlass::field_cache() { 185 if (is_shared()) { 186 return NULL; 187 } 188 if (_field_cache == NULL) { 189 assert(!is_java_lang_Object(), "Object has no fields"); 190 Arena* arena = CURRENT_ENV->arena(); 191 _field_cache = new (arena) ciConstantPoolCache(arena, 5); 192 } 193 return _field_cache; 194 } 195 196 // ------------------------------------------------------------------ 197 // ciInstanceKlass::get_canonical_holder 198 // 199 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) { 200 #ifdef ASSERT 201 if (!(offset >= 0 && offset < layout_helper())) { 202 tty->print("*** get_canonical_holder(%d) on ", offset); 203 this->print(); 204 tty->print_cr(" ***"); 205 }; 206 assert(offset >= 0 && offset < layout_helper(), "offset must be tame"); 207 #endif 208 209 if (offset < instanceOopDesc::base_offset_in_bytes()) { 210 // All header offsets belong properly to java/lang/Object. 211 return CURRENT_ENV->Object_klass(); 212 } 213 214 ciInstanceKlass* self = this; 215 for (;;) { 216 assert(self->is_loaded(), "must be loaded to have size"); 217 ciInstanceKlass* super = self->super(); 218 if (super == NULL || super->nof_nonstatic_fields() == 0 || 219 !super->contains_field_offset(offset)) { 220 return self; 221 } else { 222 self = super; // return super->get_canonical_holder(offset) 223 } 224 } 225 } 226 227 // ------------------------------------------------------------------ 228 // ciInstanceKlass::is_java_lang_Object 229 // 230 // Is this klass java.lang.Object? 231 bool ciInstanceKlass::is_java_lang_Object() const { 232 return equals(CURRENT_ENV->Object_klass()); 233 } 234 235 // ------------------------------------------------------------------ 236 // ciInstanceKlass::uses_default_loader 237 bool ciInstanceKlass::uses_default_loader() const { 238 // Note: We do not need to resolve the handle or enter the VM 239 // in order to test null-ness. 240 return _loader == NULL; 241 } 242 243 // ------------------------------------------------------------------ 244 245 /** 246 * Return basic type of boxed value for box klass or T_OBJECT if not. 247 */ 248 BasicType ciInstanceKlass::box_klass_type() const { 249 if (uses_default_loader() && is_loaded()) { 250 return SystemDictionary::box_klass_type(get_Klass()); 251 } else { 252 return T_OBJECT; 253 } 254 } 255 256 /** 257 * Is this boxing klass? 258 */ 259 bool ciInstanceKlass::is_box_klass() const { 260 return is_java_primitive(box_klass_type()); 261 } 262 263 /** 264 * Is this boxed value offset? 265 */ 266 bool ciInstanceKlass::is_boxed_value_offset(int offset) const { 267 BasicType bt = box_klass_type(); 268 return is_java_primitive(bt) && 269 (offset == java_lang_boxing_object::value_offset_in_bytes(bt)); 270 } 271 272 // ------------------------------------------------------------------ 273 // ciInstanceKlass::is_in_package 274 // 275 // Is this klass in the given package? 276 bool ciInstanceKlass::is_in_package(const char* packagename, int len) { 277 // To avoid class loader mischief, this test always rejects application classes. 278 if (!uses_default_loader()) 279 return false; 280 GUARDED_VM_ENTRY( 281 return is_in_package_impl(packagename, len); 282 ) 283 } 284 285 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) { 286 ASSERT_IN_VM; 287 288 // If packagename contains trailing '/' exclude it from the 289 // prefix-test since we test for it explicitly. 290 if (packagename[len - 1] == '/') 291 len--; 292 293 if (!name()->starts_with(packagename, len)) 294 return false; 295 296 // Test if the class name is something like "java/lang". 297 if ((len + 1) > name()->utf8_length()) 298 return false; 299 300 // Test for trailing '/' 301 if ((char) name()->byte_at(len) != '/') 302 return false; 303 304 // Make sure it's not actually in a subpackage: 305 if (name()->index_of_at(len+1, "/", 1) >= 0) 306 return false; 307 308 return true; 309 } 310 311 // ------------------------------------------------------------------ 312 // ciInstanceKlass::print_impl 313 // 314 // Implementation of the print method. 315 void ciInstanceKlass::print_impl(outputStream* st) { 316 ciKlass::print_impl(st); 317 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i((address)loader()));) 318 if (is_loaded()) { 319 st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=", 320 bool_to_str(is_initialized()), 321 bool_to_str(has_finalizer()), 322 bool_to_str(has_subklass()), 323 layout_helper()); 324 325 _flags.print_klass_flags(); 326 327 if (_super) { 328 st->print(" super="); 329 _super->print_name(); 330 } 331 if (_java_mirror) { 332 st->print(" mirror=PRESENT"); 333 } 334 } else { 335 st->print(" loaded=false"); 336 } 337 } 338 339 // ------------------------------------------------------------------ 340 // ciInstanceKlass::super 341 // 342 // Get the superklass of this klass. 343 ciInstanceKlass* ciInstanceKlass::super() { 344 assert(is_loaded(), "must be loaded"); 345 if (_super == NULL && !is_java_lang_Object()) { 346 GUARDED_VM_ENTRY( 347 Klass* super_klass = get_instanceKlass()->super(); 348 _super = CURRENT_ENV->get_instance_klass(super_klass); 349 ) 350 } 351 return _super; 352 } 353 354 // ------------------------------------------------------------------ 355 // ciInstanceKlass::java_mirror 356 // 357 // Get the instance of java.lang.Class corresponding to this klass. 358 // Cache it on this->_java_mirror. 359 ciInstance* ciInstanceKlass::java_mirror() { 360 if (is_shared()) { 361 return ciKlass::java_mirror(); 362 } 363 if (_java_mirror == NULL) { 364 _java_mirror = ciKlass::java_mirror(); 365 } 366 return _java_mirror; 367 } 368 369 // ------------------------------------------------------------------ 370 // ciInstanceKlass::unique_concrete_subklass 371 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() { 372 if (!is_loaded()) return NULL; // No change if class is not loaded 373 if (!is_abstract()) return NULL; // Only applies to abstract classes. 374 if (!has_subklass()) return NULL; // Must have at least one subklass. 375 VM_ENTRY_MARK; 376 InstanceKlass* ik = get_instanceKlass(); 377 Klass* up = ik->up_cast_abstract(); 378 assert(up->is_instance_klass(), "must be InstanceKlass"); 379 if (ik == up) { 380 return NULL; 381 } 382 return CURRENT_THREAD_ENV->get_instance_klass(up); 383 } 384 385 // ------------------------------------------------------------------ 386 // ciInstanceKlass::has_finalizable_subclass 387 bool ciInstanceKlass::has_finalizable_subclass() { 388 if (!is_loaded()) return true; 389 VM_ENTRY_MARK; 390 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL; 391 } 392 393 // ------------------------------------------------------------------ 394 // ciInstanceKlass::get_field_by_offset 395 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) { 396 if (!is_static) { 397 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) { 398 ciField* field = _nonstatic_fields->at(i); 399 int field_off = field->offset_in_bytes(); 400 if (field_off == field_offset) 401 return field; 402 if (field_off > field_offset) 403 break; 404 // could do binary search or check bins, but probably not worth it 405 } 406 return NULL; 407 } 408 VM_ENTRY_MARK; 409 InstanceKlass* k = get_instanceKlass(); 410 fieldDescriptor fd; 411 if (!k->find_field_from_offset(field_offset, is_static, &fd)) { 412 return NULL; 413 } 414 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); 415 return field; 416 } 417 418 // ------------------------------------------------------------------ 419 // ciInstanceKlass::get_field_by_name 420 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) { 421 VM_ENTRY_MARK; 422 InstanceKlass* k = get_instanceKlass(); 423 fieldDescriptor fd; 424 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd); 425 if (def == NULL) { 426 return NULL; 427 } 428 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); 429 return field; 430 } 431 432 433 static int sort_field_by_offset(ciField** a, ciField** b) { 434 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes(); 435 // (no worries about 32-bit overflow...) 436 } 437 438 // ------------------------------------------------------------------ 439 // ciInstanceKlass::compute_nonstatic_fields 440 int ciInstanceKlass::compute_nonstatic_fields() { 441 assert(is_loaded(), "must be loaded"); 442 443 if (_nonstatic_fields != NULL) 444 return _nonstatic_fields->length(); 445 446 if (!has_nonstatic_fields()) { 447 Arena* arena = CURRENT_ENV->arena(); 448 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL); 449 return 0; 450 } 451 assert(!is_java_lang_Object(), "bootstrap OK"); 452 453 // Size in bytes of my fields, including inherited fields. 454 int fsize = nonstatic_field_size() * heapOopSize; 455 456 ciInstanceKlass* super = this->super(); 457 GrowableArray<ciField*>* super_fields = NULL; 458 if (super != NULL && super->has_nonstatic_fields()) { 459 int super_fsize = super->nonstatic_field_size() * heapOopSize; 460 int super_flen = super->nof_nonstatic_fields(); 461 super_fields = super->_nonstatic_fields; 462 assert(super_flen == 0 || super_fields != NULL, "first get nof_fields"); 463 // See if I am no larger than my super; if so, I can use his fields. 464 if (fsize == super_fsize) { 465 _nonstatic_fields = super_fields; 466 return super_fields->length(); 467 } 468 } 469 470 GrowableArray<ciField*>* fields = NULL; 471 GUARDED_VM_ENTRY({ 472 fields = compute_nonstatic_fields_impl(super_fields); 473 }); 474 475 if (fields == NULL) { 476 // This can happen if this class (java.lang.Class) has invisible fields. 477 if (super_fields != NULL) { 478 _nonstatic_fields = super_fields; 479 return super_fields->length(); 480 } else { 481 return 0; 482 } 483 } 484 485 int flen = fields->length(); 486 487 // Now sort them by offset, ascending. 488 // (In principle, they could mix with superclass fields.) 489 fields->sort(sort_field_by_offset); 490 _nonstatic_fields = fields; 491 return flen; 492 } 493 494 GrowableArray<ciField*>* 495 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>* 496 super_fields) { 497 ASSERT_IN_VM; 498 Arena* arena = CURRENT_ENV->arena(); 499 int flen = 0; 500 GrowableArray<ciField*>* fields = NULL; 501 InstanceKlass* k = get_instanceKlass(); 502 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { 503 if (fs.access_flags().is_static()) continue; 504 flen += 1; 505 } 506 507 // allocate the array: 508 if (flen == 0) { 509 return NULL; // return nothing if none are locally declared 510 } 511 if (super_fields != NULL) { 512 flen += super_fields->length(); 513 } 514 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL); 515 if (super_fields != NULL) { 516 fields->appendAll(super_fields); 517 } 518 519 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { 520 if (fs.access_flags().is_static()) continue; 521 fieldDescriptor& fd = fs.field_descriptor(); 522 ciField* field = new (arena) ciField(&fd); 523 fields->append(field); 524 } 525 assert(fields->length() == flen, "sanity"); 526 return fields; 527 } 528 529 bool ciInstanceKlass::compute_injected_fields_helper() { 530 ASSERT_IN_VM; 531 InstanceKlass* k = get_instanceKlass(); 532 533 for (InternalFieldStream fs(k); !fs.done(); fs.next()) { 534 if (fs.access_flags().is_static()) continue; 535 return true; 536 } 537 return false; 538 } 539 540 void ciInstanceKlass::compute_injected_fields() { 541 assert(is_loaded(), "must be loaded"); 542 543 int has_injected_fields = 0; 544 if (super() != NULL && super()->has_injected_fields()) { 545 has_injected_fields = 1; 546 } else { 547 GUARDED_VM_ENTRY({ 548 has_injected_fields = compute_injected_fields_helper() ? 1 : 0; 549 }); 550 } 551 // may be concurrently initialized for shared ciInstanceKlass objects 552 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization"); 553 _has_injected_fields = has_injected_fields; 554 } 555 556 // ------------------------------------------------------------------ 557 // ciInstanceKlass::find_method 558 // 559 // Find a method in this klass. 560 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) { 561 VM_ENTRY_MARK; 562 InstanceKlass* k = get_instanceKlass(); 563 Symbol* name_sym = name->get_symbol(); 564 Symbol* sig_sym= signature->get_symbol(); 565 566 Method* m = k->find_method(name_sym, sig_sym); 567 if (m == NULL) return NULL; 568 569 return CURRENT_THREAD_ENV->get_method(m); 570 } 571 572 // ------------------------------------------------------------------ 573 // ciInstanceKlass::is_leaf_type 574 bool ciInstanceKlass::is_leaf_type() { 575 assert(is_loaded(), "must be loaded"); 576 if (is_shared()) { 577 return is_final(); // approximately correct 578 } else { 579 return !_has_subklass && (nof_implementors() == 0); 580 } 581 } 582 583 // ------------------------------------------------------------------ 584 // ciInstanceKlass::implementor 585 // 586 // Report an implementor of this interface. 587 // Note that there are various races here, since my copy 588 // of _nof_implementors might be out of date with respect 589 // to results returned by InstanceKlass::implementor. 590 // This is OK, since any dependencies we decide to assert 591 // will be checked later under the Compile_lock. 592 ciInstanceKlass* ciInstanceKlass::implementor() { 593 ciInstanceKlass* impl = _implementor; 594 if (impl == NULL) { 595 // Go into the VM to fetch the implementor. 596 { 597 VM_ENTRY_MARK; 598 Klass* k = get_instanceKlass()->implementor(); 599 if (k != NULL) { 600 if (k == get_instanceKlass()) { 601 // More than one implementors. Use 'this' in this case. 602 impl = this; 603 } else { 604 impl = CURRENT_THREAD_ENV->get_instance_klass(k); 605 } 606 } 607 } 608 // Memoize this result. 609 if (!is_shared()) { 610 _implementor = impl; 611 } 612 } 613 return impl; 614 } 615 616 ciInstanceKlass* ciInstanceKlass::host_klass() { 617 assert(is_loaded(), "must be loaded"); 618 if (is_anonymous()) { 619 VM_ENTRY_MARK 620 Klass* host_klass = get_instanceKlass()->host_klass(); 621 return CURRENT_ENV->get_instance_klass(host_klass); 622 } 623 return NULL; 624 } 625 626 // Utility class for printing of the contents of the static fields for 627 // use by compilation replay. It only prints out the information that 628 // could be consumed by the compiler, so for primitive types it prints 629 // out the actual value. For Strings it's the actual string value. 630 // For array types it it's first level array size since that's the 631 // only value which statically unchangeable. For all other reference 632 // types it simply prints out the dynamic type. 633 634 class StaticFinalFieldPrinter : public FieldClosure { 635 outputStream* _out; 636 const char* _holder; 637 public: 638 StaticFinalFieldPrinter(outputStream* out, const char* holder) : 639 _out(out), 640 _holder(holder) { 641 } 642 void do_field(fieldDescriptor* fd) { 643 if (fd->is_final() && !fd->has_initial_value()) { 644 ResourceMark rm; 645 oop mirror = fd->field_holder()->java_mirror(); 646 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii()); 647 switch (fd->field_type()) { 648 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break; 649 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break; 650 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break; 651 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break; 652 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break; 653 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break; 654 case T_FLOAT: { 655 float f = mirror->float_field(fd->offset()); 656 _out->print_cr("%d", *(int*)&f); 657 break; 658 } 659 case T_DOUBLE: { 660 double d = mirror->double_field(fd->offset()); 661 _out->print_cr(INT64_FORMAT, *(int64_t*)&d); 662 break; 663 } 664 case T_ARRAY: { 665 oop value = mirror->obj_field_acquire(fd->offset()); 666 if (value == NULL) { 667 _out->print_cr("null"); 668 } else { 669 typeArrayOop ta = (typeArrayOop)value; 670 _out->print("%d", ta->length()); 671 if (value->is_objArray()) { 672 objArrayOop oa = (objArrayOop)value; 673 const char* klass_name = value->klass()->name()->as_quoted_ascii(); 674 _out->print(" %s", klass_name); 675 } 676 _out->cr(); 677 } 678 break; 679 } 680 case T_OBJECT: { 681 oop value = mirror->obj_field_acquire(fd->offset()); 682 if (value == NULL) { 683 _out->print_cr("null"); 684 } else if (value->is_instance()) { 685 if (value->is_a(SystemDictionary::String_klass())) { 686 const char* ascii_value = java_lang_String::as_quoted_ascii(value); 687 _out->print("\"%s\"", (ascii_value != NULL) ? ascii_value : ""); 688 } else { 689 const char* klass_name = value->klass()->name()->as_quoted_ascii(); 690 _out->print_cr("%s", klass_name); 691 } 692 } else { 693 ShouldNotReachHere(); 694 } 695 break; 696 } 697 default: 698 ShouldNotReachHere(); 699 } 700 } 701 } 702 }; 703 704 705 void ciInstanceKlass::dump_replay_data(outputStream* out) { 706 ResourceMark rm; 707 708 InstanceKlass* ik = get_instanceKlass(); 709 ConstantPool* cp = ik->constants(); 710 711 // Try to record related loaded classes 712 Klass* sub = ik->subklass(); 713 while (sub != NULL) { 714 if (sub->is_instance_klass()) { 715 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii()); 716 } 717 sub = sub->next_sibling(); 718 } 719 720 // Dump out the state of the constant pool tags. During replay the 721 // tags will be validated for things which shouldn't change and 722 // classes will be resolved if the tags indicate that they were 723 // resolved at compile time. 724 out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(), 725 is_linked(), is_initialized(), cp->length()); 726 for (int index = 1; index < cp->length(); index++) { 727 out->print(" %d", cp->tags()->at(index)); 728 } 729 out->cr(); 730 if (is_initialized()) { 731 // Dump out the static final fields in case the compilation relies 732 // on their value for correct replay. 733 StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii()); 734 ik->do_local_static_fields(&sffp); 735 } 736 }