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.inline.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.inline.hpp" 37 #include "runtime/handles.inline.hpp" 38 #include "runtime/jniHandles.inline.hpp" 39 40 // ciInstanceKlass 41 // 42 // This class represents a Klass* in the HotSpot virtual machine 43 // whose Klass part in an InstanceKlass. 44 45 46 // ------------------------------------------------------------------ 47 // ciInstanceKlass::ciInstanceKlass 48 // 49 // Loaded instance klass. 50 ciInstanceKlass::ciInstanceKlass(Klass* k) : 51 ciKlass(k) 52 { 53 assert(get_Klass()->is_instance_klass(), "wrong type"); 54 assert(get_instanceKlass()->is_loaded(), "must be at least loaded"); 55 InstanceKlass* ik = get_instanceKlass(); 56 57 AccessFlags access_flags = ik->access_flags(); 58 _flags = ciFlags(access_flags); 59 _has_finalizer = access_flags.has_finalizer(); 60 _has_subklass = ik->subklass() != NULL; 61 _init_state = ik->init_state(); 62 _nonstatic_field_size = ik->nonstatic_field_size(); 63 _has_nonstatic_fields = ik->has_nonstatic_fields(); 64 _has_nonstatic_concrete_methods = ik->has_nonstatic_concrete_methods(); 65 _is_unsafe_anonymous = ik->is_unsafe_anonymous(); 66 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields: 67 _has_injected_fields = -1; 68 _implementor = NULL; // we will fill these lazily 69 70 // Ensure that the metadata wrapped by the ciMetadata is kept alive by GC. 71 // This is primarily useful for metadata which is considered as weak roots 72 // by the GC but need to be strong roots if reachable from a current compilation. 73 // InstanceKlass are created for both weak and strong metadata. Ensuring this metadata 74 // alive covers the cases where there are weak roots without performance cost. 75 oop holder = ik->holder_phantom(); 76 if (ik->is_unsafe_anonymous()) { 77 // Though ciInstanceKlass records class loader oop, it's not enough to keep 78 // VM unsafe anonymous classes alive (loader == NULL). Klass holder should 79 // be used instead. It is enough to record a ciObject, since cached elements are never removed 80 // during ciObjectFactory lifetime. ciObjectFactory itself is created for 81 // every compilation and lives for the whole duration of the compilation. 82 assert(holder != NULL, "holder of unsafe anonymous class is the mirror which is never null"); 83 (void)CURRENT_ENV->get_object(holder); 84 } 85 86 Thread *thread = Thread::current(); 87 if (ciObjectFactory::is_initialized()) { 88 _loader = JNIHandles::make_local(thread, ik->class_loader()); 89 _protection_domain = JNIHandles::make_local(thread, 90 ik->protection_domain()); 91 _is_shared = false; 92 } else { 93 Handle h_loader(thread, ik->class_loader()); 94 Handle h_protection_domain(thread, ik->protection_domain()); 95 _loader = JNIHandles::make_global(h_loader); 96 _protection_domain = JNIHandles::make_global(h_protection_domain); 97 _is_shared = true; 98 } 99 100 // Lazy fields get filled in only upon request. 101 _super = NULL; 102 _java_mirror = NULL; 103 104 if (is_shared()) { 105 if (k != SystemDictionary::Object_klass()) { 106 super(); 107 } 108 //compute_nonstatic_fields(); // done outside of constructor 109 } 110 111 _field_cache = NULL; 112 } 113 114 // Version for unloaded classes: 115 ciInstanceKlass::ciInstanceKlass(ciSymbol* name, 116 jobject loader, jobject protection_domain) 117 : ciKlass(name, T_OBJECT) 118 { 119 assert(name->char_at(0) != '[', "not an instance klass"); 120 _init_state = (InstanceKlass::ClassState)0; 121 _nonstatic_field_size = -1; 122 _has_nonstatic_fields = false; 123 _nonstatic_fields = NULL; 124 _has_injected_fields = -1; 125 _is_unsafe_anonymous = false; 126 _loader = loader; 127 _protection_domain = protection_domain; 128 _is_shared = false; 129 _super = NULL; 130 _java_mirror = NULL; 131 _field_cache = NULL; 132 } 133 134 135 136 // ------------------------------------------------------------------ 137 // ciInstanceKlass::compute_shared_is_initialized 138 void ciInstanceKlass::compute_shared_init_state() { 139 GUARDED_VM_ENTRY( 140 InstanceKlass* ik = get_instanceKlass(); 141 _init_state = ik->init_state(); 142 ) 143 } 144 145 // ------------------------------------------------------------------ 146 // ciInstanceKlass::compute_shared_has_subklass 147 bool ciInstanceKlass::compute_shared_has_subklass() { 148 GUARDED_VM_ENTRY( 149 InstanceKlass* ik = get_instanceKlass(); 150 _has_subklass = ik->subklass() != NULL; 151 return _has_subklass; 152 ) 153 } 154 155 // ------------------------------------------------------------------ 156 // ciInstanceKlass::loader 157 oop ciInstanceKlass::loader() { 158 ASSERT_IN_VM; 159 return JNIHandles::resolve(_loader); 160 } 161 162 // ------------------------------------------------------------------ 163 // ciInstanceKlass::loader_handle 164 jobject ciInstanceKlass::loader_handle() { 165 return _loader; 166 } 167 168 // ------------------------------------------------------------------ 169 // ciInstanceKlass::protection_domain 170 oop ciInstanceKlass::protection_domain() { 171 ASSERT_IN_VM; 172 return JNIHandles::resolve(_protection_domain); 173 } 174 175 // ------------------------------------------------------------------ 176 // ciInstanceKlass::protection_domain_handle 177 jobject ciInstanceKlass::protection_domain_handle() { 178 return _protection_domain; 179 } 180 181 // ------------------------------------------------------------------ 182 // ciInstanceKlass::field_cache 183 // 184 // Get the field cache associated with this klass. 185 ciConstantPoolCache* ciInstanceKlass::field_cache() { 186 if (is_shared()) { 187 return NULL; 188 } 189 if (_field_cache == NULL) { 190 assert(!is_java_lang_Object(), "Object has no fields"); 191 Arena* arena = CURRENT_ENV->arena(); 192 _field_cache = new (arena) ciConstantPoolCache(arena, 5); 193 } 194 return _field_cache; 195 } 196 197 // ------------------------------------------------------------------ 198 // ciInstanceKlass::get_canonical_holder 199 // 200 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) { 201 #ifdef ASSERT 202 if (!(offset >= 0 && offset < layout_helper())) { 203 tty->print("*** get_canonical_holder(%d) on ", offset); 204 this->print(); 205 tty->print_cr(" ***"); 206 }; 207 assert(offset >= 0 && offset < layout_helper(), "offset must be tame"); 208 #endif 209 210 if (offset < instanceOopDesc::base_offset_in_bytes()) { 211 // All header offsets belong properly to java/lang/Object. 212 return CURRENT_ENV->Object_klass(); 213 } 214 215 ciInstanceKlass* self = this; 216 for (;;) { 217 assert(self->is_loaded(), "must be loaded to have size"); 218 ciInstanceKlass* super = self->super(); 219 if (super == NULL || super->nof_nonstatic_fields() == 0 || 220 !super->contains_field_offset(offset)) { 221 return self; 222 } else { 223 self = super; // return super->get_canonical_holder(offset) 224 } 225 } 226 } 227 228 // ------------------------------------------------------------------ 229 // ciInstanceKlass::is_java_lang_Object 230 // 231 // Is this klass java.lang.Object? 232 bool ciInstanceKlass::is_java_lang_Object() const { 233 return equals(CURRENT_ENV->Object_klass()); 234 } 235 236 // ------------------------------------------------------------------ 237 // ciInstanceKlass::uses_default_loader 238 bool ciInstanceKlass::uses_default_loader() const { 239 // Note: We do not need to resolve the handle or enter the VM 240 // in order to test null-ness. 241 return _loader == NULL; 242 } 243 244 // ------------------------------------------------------------------ 245 246 /** 247 * Return basic type of boxed value for box klass or T_OBJECT if not. 248 */ 249 BasicType ciInstanceKlass::box_klass_type() const { 250 if (uses_default_loader() && is_loaded()) { 251 return SystemDictionary::box_klass_type(get_Klass()); 252 } else { 253 return T_OBJECT; 254 } 255 } 256 257 /** 258 * Is this boxing klass? 259 */ 260 bool ciInstanceKlass::is_box_klass() const { 261 return is_java_primitive(box_klass_type()); 262 } 263 264 /** 265 * Is this boxed value offset? 266 */ 267 bool ciInstanceKlass::is_boxed_value_offset(int offset) const { 268 BasicType bt = box_klass_type(); 269 return is_java_primitive(bt) && 270 (offset == java_lang_boxing_object::value_offset_in_bytes(bt)); 271 } 272 273 // ------------------------------------------------------------------ 274 // ciInstanceKlass::is_in_package 275 // 276 // Is this klass in the given package? 277 bool ciInstanceKlass::is_in_package(const char* packagename, int len) { 278 // To avoid class loader mischief, this test always rejects application classes. 279 if (!uses_default_loader()) 280 return false; 281 GUARDED_VM_ENTRY( 282 return is_in_package_impl(packagename, len); 283 ) 284 } 285 286 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) { 287 ASSERT_IN_VM; 288 289 // If packagename contains trailing '/' exclude it from the 290 // prefix-test since we test for it explicitly. 291 if (packagename[len - 1] == '/') 292 len--; 293 294 if (!name()->starts_with(packagename, len)) 295 return false; 296 297 // Test if the class name is something like "java/lang". 298 if ((len + 1) > name()->utf8_length()) 299 return false; 300 301 // Test for trailing '/' 302 if (name()->char_at(len) != '/') 303 return false; 304 305 // Make sure it's not actually in a subpackage: 306 if (name()->index_of_at(len+1, "/", 1) >= 0) 307 return false; 308 309 return true; 310 } 311 312 // ------------------------------------------------------------------ 313 // ciInstanceKlass::print_impl 314 // 315 // Implementation of the print method. 316 void ciInstanceKlass::print_impl(outputStream* st) { 317 ciKlass::print_impl(st); 318 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i((address)loader()));) 319 if (is_loaded()) { 320 st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=", 321 bool_to_str(is_initialized()), 322 bool_to_str(has_finalizer()), 323 bool_to_str(has_subklass()), 324 layout_helper()); 325 326 _flags.print_klass_flags(); 327 328 if (_super) { 329 st->print(" super="); 330 _super->print_name(); 331 } 332 if (_java_mirror) { 333 st->print(" mirror=PRESENT"); 334 } 335 } else { 336 st->print(" loaded=false"); 337 } 338 } 339 340 // ------------------------------------------------------------------ 341 // ciInstanceKlass::super 342 // 343 // Get the superklass of this klass. 344 ciInstanceKlass* ciInstanceKlass::super() { 345 assert(is_loaded(), "must be loaded"); 346 if (_super == NULL && !is_java_lang_Object()) { 347 GUARDED_VM_ENTRY( 348 Klass* super_klass = get_instanceKlass()->super(); 349 _super = CURRENT_ENV->get_instance_klass(super_klass); 350 ) 351 } 352 return _super; 353 } 354 355 // ------------------------------------------------------------------ 356 // ciInstanceKlass::java_mirror 357 // 358 // Get the instance of java.lang.Class corresponding to this klass. 359 // Cache it on this->_java_mirror. 360 ciInstance* ciInstanceKlass::java_mirror() { 361 if (is_shared()) { 362 return ciKlass::java_mirror(); 363 } 364 if (_java_mirror == NULL) { 365 _java_mirror = ciKlass::java_mirror(); 366 } 367 return _java_mirror; 368 } 369 370 // ------------------------------------------------------------------ 371 // ciInstanceKlass::unique_concrete_subklass 372 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() { 373 if (!is_loaded()) return NULL; // No change if class is not loaded 374 if (!is_abstract()) return NULL; // Only applies to abstract classes. 375 if (!has_subklass()) return NULL; // Must have at least one subklass. 376 VM_ENTRY_MARK; 377 InstanceKlass* ik = get_instanceKlass(); 378 Klass* up = ik->up_cast_abstract(); 379 assert(up->is_instance_klass(), "must be InstanceKlass"); 380 if (ik == up) { 381 return NULL; 382 } 383 return CURRENT_THREAD_ENV->get_instance_klass(up); 384 } 385 386 // ------------------------------------------------------------------ 387 // ciInstanceKlass::has_finalizable_subclass 388 bool ciInstanceKlass::has_finalizable_subclass() { 389 if (!is_loaded()) return true; 390 VM_ENTRY_MARK; 391 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL; 392 } 393 394 // ------------------------------------------------------------------ 395 // ciInstanceKlass::get_field_by_offset 396 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) { 397 if (!is_static) { 398 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) { 399 ciField* field = _nonstatic_fields->at(i); 400 int field_off = field->offset_in_bytes(); 401 if (field_off == field_offset) 402 return field; 403 if (field_off > field_offset) 404 break; 405 // could do binary search or check bins, but probably not worth it 406 } 407 return NULL; 408 } 409 VM_ENTRY_MARK; 410 InstanceKlass* k = get_instanceKlass(); 411 fieldDescriptor fd; 412 if (!k->find_field_from_offset(field_offset, is_static, &fd)) { 413 return NULL; 414 } 415 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); 416 return field; 417 } 418 419 // ------------------------------------------------------------------ 420 // ciInstanceKlass::get_field_by_name 421 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) { 422 VM_ENTRY_MARK; 423 InstanceKlass* k = get_instanceKlass(); 424 fieldDescriptor fd; 425 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd); 426 if (def == NULL) { 427 return NULL; 428 } 429 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd); 430 return field; 431 } 432 433 434 static int sort_field_by_offset(ciField** a, ciField** b) { 435 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes(); 436 // (no worries about 32-bit overflow...) 437 } 438 439 // ------------------------------------------------------------------ 440 // ciInstanceKlass::compute_nonstatic_fields 441 int ciInstanceKlass::compute_nonstatic_fields() { 442 assert(is_loaded(), "must be loaded"); 443 444 if (_nonstatic_fields != NULL) 445 return _nonstatic_fields->length(); 446 447 if (!has_nonstatic_fields()) { 448 Arena* arena = CURRENT_ENV->arena(); 449 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL); 450 return 0; 451 } 452 assert(!is_java_lang_Object(), "bootstrap OK"); 453 454 // Size in bytes of my fields, including inherited fields. 455 int fsize = nonstatic_field_size() * heapOopSize; 456 457 ciInstanceKlass* super = this->super(); 458 GrowableArray<ciField*>* super_fields = NULL; 459 if (super != NULL && super->has_nonstatic_fields()) { 460 int super_fsize = super->nonstatic_field_size() * heapOopSize; 461 int super_flen = super->nof_nonstatic_fields(); 462 super_fields = super->_nonstatic_fields; 463 assert(super_flen == 0 || super_fields != NULL, "first get nof_fields"); 464 // See if I am no larger than my super; if so, I can use his fields. 465 if (fsize == super_fsize) { 466 _nonstatic_fields = super_fields; 467 return super_fields->length(); 468 } 469 } 470 471 GrowableArray<ciField*>* fields = NULL; 472 GUARDED_VM_ENTRY({ 473 fields = compute_nonstatic_fields_impl(super_fields); 474 }); 475 476 if (fields == NULL) { 477 // This can happen if this class (java.lang.Class) has invisible fields. 478 if (super_fields != NULL) { 479 _nonstatic_fields = super_fields; 480 return super_fields->length(); 481 } else { 482 return 0; 483 } 484 } 485 486 int flen = fields->length(); 487 488 // Now sort them by offset, ascending. 489 // (In principle, they could mix with superclass fields.) 490 fields->sort(sort_field_by_offset); 491 _nonstatic_fields = fields; 492 return flen; 493 } 494 495 GrowableArray<ciField*>* 496 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>* 497 super_fields) { 498 ASSERT_IN_VM; 499 Arena* arena = CURRENT_ENV->arena(); 500 int flen = 0; 501 GrowableArray<ciField*>* fields = NULL; 502 InstanceKlass* k = get_instanceKlass(); 503 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { 504 if (fs.access_flags().is_static()) continue; 505 flen += 1; 506 } 507 508 // allocate the array: 509 if (flen == 0) { 510 return NULL; // return nothing if none are locally declared 511 } 512 if (super_fields != NULL) { 513 flen += super_fields->length(); 514 } 515 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL); 516 if (super_fields != NULL) { 517 fields->appendAll(super_fields); 518 } 519 520 for (JavaFieldStream fs(k); !fs.done(); fs.next()) { 521 if (fs.access_flags().is_static()) continue; 522 fieldDescriptor& fd = fs.field_descriptor(); 523 ciField* field = new (arena) ciField(&fd); 524 fields->append(field); 525 } 526 assert(fields->length() == flen, "sanity"); 527 return fields; 528 } 529 530 bool ciInstanceKlass::compute_injected_fields_helper() { 531 ASSERT_IN_VM; 532 InstanceKlass* k = get_instanceKlass(); 533 534 for (InternalFieldStream fs(k); !fs.done(); fs.next()) { 535 if (fs.access_flags().is_static()) continue; 536 return true; 537 } 538 return false; 539 } 540 541 void ciInstanceKlass::compute_injected_fields() { 542 assert(is_loaded(), "must be loaded"); 543 544 int has_injected_fields = 0; 545 if (super() != NULL && super()->has_injected_fields()) { 546 has_injected_fields = 1; 547 } else { 548 GUARDED_VM_ENTRY({ 549 has_injected_fields = compute_injected_fields_helper() ? 1 : 0; 550 }); 551 } 552 // may be concurrently initialized for shared ciInstanceKlass objects 553 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization"); 554 _has_injected_fields = has_injected_fields; 555 } 556 557 bool ciInstanceKlass::has_object_fields() const { 558 GUARDED_VM_ENTRY( 559 return get_instanceKlass()->nonstatic_oop_map_size() > 0; 560 ); 561 } 562 563 // ------------------------------------------------------------------ 564 // ciInstanceKlass::find_method 565 // 566 // Find a method in this klass. 567 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) { 568 VM_ENTRY_MARK; 569 InstanceKlass* k = get_instanceKlass(); 570 Symbol* name_sym = name->get_symbol(); 571 Symbol* sig_sym= signature->get_symbol(); 572 573 Method* m = k->find_method(name_sym, sig_sym); 574 if (m == NULL) return NULL; 575 576 return CURRENT_THREAD_ENV->get_method(m); 577 } 578 579 // ------------------------------------------------------------------ 580 // ciInstanceKlass::is_leaf_type 581 bool ciInstanceKlass::is_leaf_type() { 582 assert(is_loaded(), "must be loaded"); 583 if (is_shared()) { 584 return is_final(); // approximately correct 585 } else { 586 return !_has_subklass && (nof_implementors() == 0); 587 } 588 } 589 590 // ------------------------------------------------------------------ 591 // ciInstanceKlass::implementor 592 // 593 // Report an implementor of this interface. 594 // Note that there are various races here, since my copy 595 // of _nof_implementors might be out of date with respect 596 // to results returned by InstanceKlass::implementor. 597 // This is OK, since any dependencies we decide to assert 598 // will be checked later under the Compile_lock. 599 ciInstanceKlass* ciInstanceKlass::implementor() { 600 ciInstanceKlass* impl = _implementor; 601 if (impl == NULL) { 602 // Go into the VM to fetch the implementor. 603 { 604 VM_ENTRY_MARK; 605 MutexLocker ml(Compile_lock); 606 Klass* k = get_instanceKlass()->implementor(); 607 if (k != NULL) { 608 if (k == get_instanceKlass()) { 609 // More than one implementors. Use 'this' in this case. 610 impl = this; 611 } else { 612 impl = CURRENT_THREAD_ENV->get_instance_klass(k); 613 } 614 } 615 } 616 // Memoize this result. 617 if (!is_shared()) { 618 _implementor = impl; 619 } 620 } 621 return impl; 622 } 623 624 ciInstanceKlass* ciInstanceKlass::unsafe_anonymous_host() { 625 assert(is_loaded(), "must be loaded"); 626 if (is_unsafe_anonymous()) { 627 VM_ENTRY_MARK 628 Klass* unsafe_anonymous_host = get_instanceKlass()->unsafe_anonymous_host(); 629 return CURRENT_ENV->get_instance_klass(unsafe_anonymous_host); 630 } 631 return NULL; 632 } 633 634 // Utility class for printing of the contents of the static fields for 635 // use by compilation replay. It only prints out the information that 636 // could be consumed by the compiler, so for primitive types it prints 637 // out the actual value. For Strings it's the actual string value. 638 // For array types it it's first level array size since that's the 639 // only value which statically unchangeable. For all other reference 640 // types it simply prints out the dynamic type. 641 642 class StaticFinalFieldPrinter : public FieldClosure { 643 outputStream* _out; 644 const char* _holder; 645 public: 646 StaticFinalFieldPrinter(outputStream* out, const char* holder) : 647 _out(out), 648 _holder(holder) { 649 } 650 void do_field(fieldDescriptor* fd) { 651 if (fd->is_final() && !fd->has_initial_value()) { 652 ResourceMark rm; 653 oop mirror = fd->field_holder()->java_mirror(); 654 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii()); 655 switch (fd->field_type()) { 656 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break; 657 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break; 658 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break; 659 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break; 660 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break; 661 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break; 662 case T_FLOAT: { 663 float f = mirror->float_field(fd->offset()); 664 _out->print_cr("%d", *(int*)&f); 665 break; 666 } 667 case T_DOUBLE: { 668 double d = mirror->double_field(fd->offset()); 669 _out->print_cr(INT64_FORMAT, *(int64_t*)&d); 670 break; 671 } 672 case T_ARRAY: { 673 oop value = mirror->obj_field_acquire(fd->offset()); 674 if (value == NULL) { 675 _out->print_cr("null"); 676 } else { 677 typeArrayOop ta = (typeArrayOop)value; 678 _out->print("%d", ta->length()); 679 if (value->is_objArray()) { 680 objArrayOop oa = (objArrayOop)value; 681 const char* klass_name = value->klass()->name()->as_quoted_ascii(); 682 _out->print(" %s", klass_name); 683 } 684 _out->cr(); 685 } 686 break; 687 } 688 case T_OBJECT: { 689 oop value = mirror->obj_field_acquire(fd->offset()); 690 if (value == NULL) { 691 _out->print_cr("null"); 692 } else if (value->is_instance()) { 693 if (value->is_a(SystemDictionary::String_klass())) { 694 const char* ascii_value = java_lang_String::as_quoted_ascii(value); 695 _out->print("\"%s\"", (ascii_value != NULL) ? ascii_value : ""); 696 } else { 697 const char* klass_name = value->klass()->name()->as_quoted_ascii(); 698 _out->print_cr("%s", klass_name); 699 } 700 } else { 701 ShouldNotReachHere(); 702 } 703 break; 704 } 705 default: 706 ShouldNotReachHere(); 707 } 708 } 709 } 710 }; 711 712 713 void ciInstanceKlass::dump_replay_data(outputStream* out) { 714 ResourceMark rm; 715 716 InstanceKlass* ik = get_instanceKlass(); 717 ConstantPool* cp = ik->constants(); 718 719 // Try to record related loaded classes 720 Klass* sub = ik->subklass(); 721 while (sub != NULL) { 722 if (sub->is_instance_klass()) { 723 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii()); 724 } 725 sub = sub->next_sibling(); 726 } 727 728 // Dump out the state of the constant pool tags. During replay the 729 // tags will be validated for things which shouldn't change and 730 // classes will be resolved if the tags indicate that they were 731 // resolved at compile time. 732 out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(), 733 is_linked(), is_initialized(), cp->length()); 734 for (int index = 1; index < cp->length(); index++) { 735 out->print(" %d", cp->tags()->at(index)); 736 } 737 out->cr(); 738 if (is_initialized()) { 739 // Dump out the static final fields in case the compilation relies 740 // on their value for correct replay. 741 StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii()); 742 ik->do_local_static_fields(&sffp); 743 } 744 }