1 /* 2 * Copyright (c) 1997, 2010, 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 "classfile/systemDictionary.hpp" 27 #include "classfile/vmSymbols.hpp" 28 #include "gc_implementation/shared/markSweep.inline.hpp" 29 #include "gc_interface/collectedHeap.inline.hpp" 30 #include "memory/genOopClosures.inline.hpp" 31 #include "memory/resourceArea.hpp" 32 #include "memory/universe.inline.hpp" 33 #include "oops/instanceKlass.hpp" 34 #include "oops/objArrayKlass.hpp" 35 #include "oops/objArrayKlass.inline.hpp" 36 #include "oops/objArrayKlassKlass.hpp" 37 #include "oops/objArrayOop.hpp" 38 #include "oops/oop.inline.hpp" 39 #include "oops/oop.inline2.hpp" 40 #include "oops/symbolOop.hpp" 41 #include "runtime/handles.inline.hpp" 42 #include "runtime/mutexLocker.hpp" 43 #include "utilities/copy.hpp" 44 #ifndef SERIALGC 45 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp" 46 #include "gc_implementation/g1/g1OopClosures.inline.hpp" 47 #include "gc_implementation/g1/g1RemSet.inline.hpp" 48 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" 49 #include "gc_implementation/parNew/parOopClosures.inline.hpp" 50 #include "gc_implementation/parallelScavenge/psCompactionManager.hpp" 51 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" 52 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" 53 #include "oops/oop.pcgc.inline.hpp" 54 #endif 55 56 int objArrayKlass::oop_size(oop obj) const { 57 assert(obj->is_objArray(), "must be object array"); 58 return objArrayOop(obj)->object_size(); 59 } 60 61 objArrayOop objArrayKlass::allocate(int length, TRAPS) { 62 if (length >= 0) { 63 if (length <= arrayOopDesc::max_array_length(T_OBJECT)) { 64 int size = objArrayOopDesc::object_size(length); 65 KlassHandle h_k(THREAD, as_klassOop()); 66 objArrayOop a = (objArrayOop)CollectedHeap::array_allocate(h_k, size, length, CHECK_NULL); 67 assert(a->is_parsable(), "Can't publish unless parsable"); 68 return a; 69 } else { 70 report_java_out_of_memory("Requested array size exceeds VM limit"); 71 THROW_OOP_0(Universe::out_of_memory_error_array_size()); 72 } 73 } else { 74 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); 75 } 76 } 77 78 static int multi_alloc_counter = 0; 79 80 oop objArrayKlass::multi_allocate(int rank, jint* sizes, TRAPS) { 81 int length = *sizes; 82 // Call to lower_dimension uses this pointer, so most be called before a 83 // possible GC 84 KlassHandle h_lower_dimension(THREAD, lower_dimension()); 85 // If length < 0 allocate will throw an exception. 86 objArrayOop array = allocate(length, CHECK_NULL); 87 assert(array->is_parsable(), "Don't handlize unless parsable"); 88 objArrayHandle h_array (THREAD, array); 89 if (rank > 1) { 90 if (length != 0) { 91 for (int index = 0; index < length; index++) { 92 arrayKlass* ak = arrayKlass::cast(h_lower_dimension()); 93 oop sub_array = ak->multi_allocate(rank-1, &sizes[1], CHECK_NULL); 94 assert(sub_array->is_parsable(), "Don't publish until parsable"); 95 h_array->obj_at_put(index, sub_array); 96 } 97 } else { 98 // Since this array dimension has zero length, nothing will be 99 // allocated, however the lower dimension values must be checked 100 // for illegal values. 101 for (int i = 0; i < rank - 1; ++i) { 102 sizes += 1; 103 if (*sizes < 0) { 104 THROW_0(vmSymbols::java_lang_NegativeArraySizeException()); 105 } 106 } 107 } 108 } 109 return h_array(); 110 } 111 112 // Either oop or narrowOop depending on UseCompressedOops. 113 template <class T> void objArrayKlass::do_copy(arrayOop s, T* src, 114 arrayOop d, T* dst, int length, TRAPS) { 115 116 BarrierSet* bs = Universe::heap()->barrier_set(); 117 // For performance reasons, we assume we are that the write barrier we 118 // are using has optimized modes for arrays of references. At least one 119 // of the asserts below will fail if this is not the case. 120 assert(bs->has_write_ref_array_opt(), "Barrier set must have ref array opt"); 121 assert(bs->has_write_ref_array_pre_opt(), "For pre-barrier as well."); 122 123 if (s == d) { 124 // since source and destination are equal we do not need conversion checks. 125 assert(length > 0, "sanity check"); 126 bs->write_ref_array_pre(dst, length); 127 Copy::conjoint_oops_atomic(src, dst, length); 128 } else { 129 // We have to make sure all elements conform to the destination array 130 klassOop bound = objArrayKlass::cast(d->klass())->element_klass(); 131 klassOop stype = objArrayKlass::cast(s->klass())->element_klass(); 132 if (stype == bound || Klass::cast(stype)->is_subtype_of(bound)) { 133 // elements are guaranteed to be subtypes, so no check necessary 134 bs->write_ref_array_pre(dst, length); 135 Copy::conjoint_oops_atomic(src, dst, length); 136 } else { 137 // slow case: need individual subtype checks 138 // note: don't use obj_at_put below because it includes a redundant store check 139 T* from = src; 140 T* end = from + length; 141 for (T* p = dst; from < end; from++, p++) { 142 // XXX this is going to be slow. 143 T element = *from; 144 // even slower now 145 bool element_is_null = oopDesc::is_null(element); 146 oop new_val = element_is_null ? oop(NULL) 147 : oopDesc::decode_heap_oop_not_null(element); 148 if (element_is_null || 149 Klass::cast((new_val->klass()))->is_subtype_of(bound)) { 150 bs->write_ref_field_pre(p, new_val); 151 *p = *from; 152 } else { 153 // We must do a barrier to cover the partial copy. 154 const size_t pd = pointer_delta(p, dst, (size_t)heapOopSize); 155 // pointer delta is scaled to number of elements (length field in 156 // objArrayOop) which we assume is 32 bit. 157 assert(pd == (size_t)(int)pd, "length field overflow"); 158 bs->write_ref_array((HeapWord*)dst, pd); 159 THROW(vmSymbols::java_lang_ArrayStoreException()); 160 return; 161 } 162 } 163 } 164 } 165 bs->write_ref_array((HeapWord*)dst, length); 166 } 167 168 void objArrayKlass::copy_array(arrayOop s, int src_pos, arrayOop d, 169 int dst_pos, int length, TRAPS) { 170 assert(s->is_objArray(), "must be obj array"); 171 172 if (!d->is_objArray()) { 173 THROW(vmSymbols::java_lang_ArrayStoreException()); 174 } 175 176 // Check is all offsets and lengths are non negative 177 if (src_pos < 0 || dst_pos < 0 || length < 0) { 178 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); 179 } 180 // Check if the ranges are valid 181 if ( (((unsigned int) length + (unsigned int) src_pos) > (unsigned int) s->length()) 182 || (((unsigned int) length + (unsigned int) dst_pos) > (unsigned int) d->length()) ) { 183 THROW(vmSymbols::java_lang_ArrayIndexOutOfBoundsException()); 184 } 185 186 // Special case. Boundary cases must be checked first 187 // This allows the following call: copy_array(s, s.length(), d.length(), 0). 188 // This is correct, since the position is supposed to be an 'in between point', i.e., s.length(), 189 // points to the right of the last element. 190 if (length==0) { 191 return; 192 } 193 if (UseCompressedOops) { 194 narrowOop* const src = objArrayOop(s)->obj_at_addr<narrowOop>(src_pos); 195 narrowOop* const dst = objArrayOop(d)->obj_at_addr<narrowOop>(dst_pos); 196 do_copy<narrowOop>(s, src, d, dst, length, CHECK); 197 } else { 198 oop* const src = objArrayOop(s)->obj_at_addr<oop>(src_pos); 199 oop* const dst = objArrayOop(d)->obj_at_addr<oop>(dst_pos); 200 do_copy<oop> (s, src, d, dst, length, CHECK); 201 } 202 } 203 204 205 klassOop objArrayKlass::array_klass_impl(bool or_null, int n, TRAPS) { 206 objArrayKlassHandle h_this(THREAD, as_klassOop()); 207 return array_klass_impl(h_this, or_null, n, CHECK_NULL); 208 } 209 210 211 klassOop objArrayKlass::array_klass_impl(objArrayKlassHandle this_oop, bool or_null, int n, TRAPS) { 212 213 assert(this_oop->dimension() <= n, "check order of chain"); 214 int dimension = this_oop->dimension(); 215 if (dimension == n) 216 return this_oop(); 217 218 objArrayKlassHandle ak (THREAD, this_oop->higher_dimension()); 219 if (ak.is_null()) { 220 if (or_null) return NULL; 221 222 ResourceMark rm; 223 JavaThread *jt = (JavaThread *)THREAD; 224 { 225 MutexLocker mc(Compile_lock, THREAD); // for vtables 226 // Ensure atomic creation of higher dimensions 227 MutexLocker mu(MultiArray_lock, THREAD); 228 229 // Check if another thread beat us 230 ak = objArrayKlassHandle(THREAD, this_oop->higher_dimension()); 231 if( ak.is_null() ) { 232 233 // Create multi-dim klass object and link them together 234 klassOop new_klass = 235 objArrayKlassKlass::cast(Universe::objArrayKlassKlassObj())-> 236 allocate_objArray_klass(dimension + 1, this_oop, CHECK_NULL); 237 ak = objArrayKlassHandle(THREAD, new_klass); 238 this_oop->set_higher_dimension(ak()); 239 ak->set_lower_dimension(this_oop()); 240 assert(ak->oop_is_objArray(), "incorrect initialization of objArrayKlass"); 241 } 242 } 243 } else { 244 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops()); 245 } 246 247 if (or_null) { 248 return ak->array_klass_or_null(n); 249 } 250 return ak->array_klass(n, CHECK_NULL); 251 } 252 253 klassOop objArrayKlass::array_klass_impl(bool or_null, TRAPS) { 254 return array_klass_impl(or_null, dimension() + 1, CHECK_NULL); 255 } 256 257 bool objArrayKlass::can_be_primary_super_slow() const { 258 if (!bottom_klass()->klass_part()->can_be_primary_super()) 259 // array of interfaces 260 return false; 261 else 262 return Klass::can_be_primary_super_slow(); 263 } 264 265 objArrayOop objArrayKlass::compute_secondary_supers(int num_extra_slots, TRAPS) { 266 // interfaces = { cloneable_klass, serializable_klass, elemSuper[], ... }; 267 objArrayOop es = Klass::cast(element_klass())->secondary_supers(); 268 objArrayHandle elem_supers (THREAD, es); 269 int num_elem_supers = elem_supers.is_null() ? 0 : elem_supers->length(); 270 int num_secondaries = num_extra_slots + 2 + num_elem_supers; 271 if (num_secondaries == 2) { 272 // Must share this for correct bootstrapping! 273 return Universe::the_array_interfaces_array(); 274 } else { 275 objArrayOop sec_oop = oopFactory::new_system_objArray(num_secondaries, CHECK_NULL); 276 objArrayHandle secondaries(THREAD, sec_oop); 277 secondaries->obj_at_put(num_extra_slots+0, SystemDictionary::Cloneable_klass()); 278 secondaries->obj_at_put(num_extra_slots+1, SystemDictionary::Serializable_klass()); 279 for (int i = 0; i < num_elem_supers; i++) { 280 klassOop elem_super = (klassOop) elem_supers->obj_at(i); 281 klassOop array_super = elem_super->klass_part()->array_klass_or_null(); 282 assert(array_super != NULL, "must already have been created"); 283 secondaries->obj_at_put(num_extra_slots+2+i, array_super); 284 } 285 return secondaries(); 286 } 287 } 288 289 bool objArrayKlass::compute_is_subtype_of(klassOop k) { 290 if (!k->klass_part()->oop_is_objArray()) 291 return arrayKlass::compute_is_subtype_of(k); 292 293 objArrayKlass* oak = objArrayKlass::cast(k); 294 return element_klass()->klass_part()->is_subtype_of(oak->element_klass()); 295 } 296 297 void objArrayKlass::initialize(TRAPS) { 298 Klass::cast(bottom_klass())->initialize(THREAD); // dispatches to either instanceKlass or typeArrayKlass 299 } 300 301 #define ObjArrayKlass_SPECIALIZED_OOP_ITERATE(T, a, p, do_oop) \ 302 { \ 303 T* p = (T*)(a)->base(); \ 304 T* const end = p + (a)->length(); \ 305 while (p < end) { \ 306 do_oop; \ 307 p++; \ 308 } \ 309 } 310 311 #define ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(T, a, p, low, high, do_oop) \ 312 { \ 313 T* const l = (T*)(low); \ 314 T* const h = (T*)(high); \ 315 T* p = (T*)(a)->base(); \ 316 T* end = p + (a)->length(); \ 317 if (p < l) p = l; \ 318 if (end > h) end = h; \ 319 while (p < end) { \ 320 do_oop; \ 321 ++p; \ 322 } \ 323 } 324 325 #define ObjArrayKlass_OOP_ITERATE(a, p, do_oop) \ 326 if (UseCompressedOops) { \ 327 ObjArrayKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \ 328 a, p, do_oop) \ 329 } else { \ 330 ObjArrayKlass_SPECIALIZED_OOP_ITERATE(oop, \ 331 a, p, do_oop) \ 332 } 333 334 #define ObjArrayKlass_BOUNDED_OOP_ITERATE(a, p, low, high, do_oop) \ 335 if (UseCompressedOops) { \ 336 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ 337 a, p, low, high, do_oop) \ 338 } else { \ 339 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ 340 a, p, low, high, do_oop) \ 341 } 342 343 void objArrayKlass::oop_follow_contents(oop obj) { 344 assert (obj->is_array(), "obj must be array"); 345 objArrayOop(obj)->follow_header(); 346 if (UseCompressedOops) { 347 objarray_follow_contents<narrowOop>(obj, 0); 348 } else { 349 objarray_follow_contents<oop>(obj, 0); 350 } 351 } 352 353 #ifndef SERIALGC 354 void objArrayKlass::oop_follow_contents(ParCompactionManager* cm, 355 oop obj) { 356 assert(obj->is_array(), "obj must be array"); 357 objArrayOop(obj)->follow_header(cm); 358 if (UseCompressedOops) { 359 objarray_follow_contents<narrowOop>(cm, obj, 0); 360 } else { 361 objarray_follow_contents<oop>(cm, obj, 0); 362 } 363 } 364 #endif // SERIALGC 365 366 #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \ 367 \ 368 int objArrayKlass::oop_oop_iterate##nv_suffix(oop obj, \ 369 OopClosureType* closure) { \ 370 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \ 371 assert (obj->is_array(), "obj must be array"); \ 372 objArrayOop a = objArrayOop(obj); \ 373 /* Get size before changing pointers. */ \ 374 /* Don't call size() or oop_size() since that is a virtual call. */ \ 375 int size = a->object_size(); \ 376 if (closure->do_header()) { \ 377 a->oop_iterate_header(closure); \ 378 } \ 379 ObjArrayKlass_OOP_ITERATE(a, p, (closure)->do_oop##nv_suffix(p)) \ 380 return size; \ 381 } 382 383 #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \ 384 \ 385 int objArrayKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \ 386 OopClosureType* closure, \ 387 MemRegion mr) { \ 388 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \ 389 assert(obj->is_array(), "obj must be array"); \ 390 objArrayOop a = objArrayOop(obj); \ 391 /* Get size before changing pointers. */ \ 392 /* Don't call size() or oop_size() since that is a virtual call */ \ 393 int size = a->object_size(); \ 394 if (closure->do_header()) { \ 395 a->oop_iterate_header(closure, mr); \ 396 } \ 397 ObjArrayKlass_BOUNDED_OOP_ITERATE( \ 398 a, p, mr.start(), mr.end(), (closure)->do_oop##nv_suffix(p)) \ 399 return size; \ 400 } 401 402 // Like oop_oop_iterate but only iterates over a specified range and only used 403 // for objArrayOops. 404 #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r(OopClosureType, nv_suffix) \ 405 \ 406 int objArrayKlass::oop_oop_iterate_range##nv_suffix(oop obj, \ 407 OopClosureType* closure, \ 408 int start, int end) { \ 409 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \ 410 assert(obj->is_array(), "obj must be array"); \ 411 objArrayOop a = objArrayOop(obj); \ 412 /* Get size before changing pointers. */ \ 413 /* Don't call size() or oop_size() since that is a virtual call */ \ 414 int size = a->object_size(); \ 415 if (UseCompressedOops) { \ 416 HeapWord* low = start == 0 ? (HeapWord*)a : (HeapWord*)a->obj_at_addr<narrowOop>(start);\ 417 /* this might be wierd if end needs to be aligned on HeapWord boundary */ \ 418 HeapWord* high = (HeapWord*)((narrowOop*)a->base() + end); \ 419 MemRegion mr(low, high); \ 420 if (closure->do_header()) { \ 421 a->oop_iterate_header(closure, mr); \ 422 } \ 423 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \ 424 a, p, low, high, (closure)->do_oop##nv_suffix(p)) \ 425 } else { \ 426 HeapWord* low = start == 0 ? (HeapWord*)a : (HeapWord*)a->obj_at_addr<oop>(start); \ 427 HeapWord* high = (HeapWord*)((oop*)a->base() + end); \ 428 MemRegion mr(low, high); \ 429 if (closure->do_header()) { \ 430 a->oop_iterate_header(closure, mr); \ 431 } \ 432 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \ 433 a, p, low, high, (closure)->do_oop##nv_suffix(p)) \ 434 } \ 435 return size; \ 436 } 437 438 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN) 439 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN) 440 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m) 441 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m) 442 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r) 443 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r) 444 445 int objArrayKlass::oop_adjust_pointers(oop obj) { 446 assert(obj->is_objArray(), "obj must be obj array"); 447 objArrayOop a = objArrayOop(obj); 448 // Get size before changing pointers. 449 // Don't call size() or oop_size() since that is a virtual call. 450 int size = a->object_size(); 451 a->adjust_header(); 452 ObjArrayKlass_OOP_ITERATE(a, p, MarkSweep::adjust_pointer(p)) 453 return size; 454 } 455 456 #ifndef SERIALGC 457 void objArrayKlass::oop_push_contents(PSPromotionManager* pm, oop obj) { 458 assert(obj->is_objArray(), "obj must be obj array"); 459 ObjArrayKlass_OOP_ITERATE( \ 460 objArrayOop(obj), p, \ 461 if (PSScavenge::should_scavenge(p)) { \ 462 pm->claim_or_forward_depth(p); \ 463 }) 464 } 465 466 int objArrayKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) { 467 assert (obj->is_objArray(), "obj must be obj array"); 468 objArrayOop a = objArrayOop(obj); 469 ObjArrayKlass_OOP_ITERATE(a, p, PSParallelCompact::adjust_pointer(p)) 470 return a->object_size(); 471 } 472 473 int objArrayKlass::oop_update_pointers(ParCompactionManager* cm, oop obj, 474 HeapWord* beg_addr, HeapWord* end_addr) { 475 assert (obj->is_objArray(), "obj must be obj array"); 476 objArrayOop a = objArrayOop(obj); 477 ObjArrayKlass_BOUNDED_OOP_ITERATE( \ 478 a, p, beg_addr, end_addr, \ 479 PSParallelCompact::adjust_pointer(p)) 480 return a->object_size(); 481 } 482 #endif // SERIALGC 483 484 // JVM support 485 486 jint objArrayKlass::compute_modifier_flags(TRAPS) const { 487 // The modifier for an objectArray is the same as its element 488 if (element_klass() == NULL) { 489 assert(Universe::is_bootstrapping(), "partial objArray only at startup"); 490 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC; 491 } 492 // Return the flags of the bottom element type. 493 jint element_flags = Klass::cast(bottom_klass())->compute_modifier_flags(CHECK_0); 494 495 return (element_flags & (JVM_ACC_PUBLIC | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED)) 496 | (JVM_ACC_ABSTRACT | JVM_ACC_FINAL); 497 } 498 499 500 #ifndef PRODUCT 501 // Printing 502 503 void objArrayKlass::oop_print_on(oop obj, outputStream* st) { 504 arrayKlass::oop_print_on(obj, st); 505 assert(obj->is_objArray(), "must be objArray"); 506 objArrayOop oa = objArrayOop(obj); 507 int print_len = MIN2((intx) oa->length(), MaxElementPrintSize); 508 for(int index = 0; index < print_len; index++) { 509 st->print(" - %3d : ", index); 510 oa->obj_at(index)->print_value_on(st); 511 st->cr(); 512 } 513 int remaining = oa->length() - print_len; 514 if (remaining > 0) { 515 tty->print_cr(" - <%d more elements, increase MaxElementPrintSize to print>", remaining); 516 } 517 } 518 519 #endif //PRODUCT 520 521 static int max_objArray_print_length = 4; 522 523 void objArrayKlass::oop_print_value_on(oop obj, outputStream* st) { 524 assert(obj->is_objArray(), "must be objArray"); 525 st->print("a "); 526 element_klass()->print_value_on(st); 527 int len = objArrayOop(obj)->length(); 528 st->print("[%d] ", len); 529 obj->print_address_on(st); 530 if (NOT_PRODUCT(PrintOopAddress ||) PrintMiscellaneous && (WizardMode || Verbose)) { 531 st->print("{"); 532 for (int i = 0; i < len; i++) { 533 if (i > max_objArray_print_length) { 534 st->print("..."); break; 535 } 536 st->print(" "INTPTR_FORMAT, (intptr_t)(void*)objArrayOop(obj)->obj_at(i)); 537 } 538 st->print(" }"); 539 } 540 } 541 542 const char* objArrayKlass::internal_name() const { 543 return external_name(); 544 } 545 546 // Verification 547 548 void objArrayKlass::oop_verify_on(oop obj, outputStream* st) { 549 arrayKlass::oop_verify_on(obj, st); 550 guarantee(obj->is_objArray(), "must be objArray"); 551 objArrayOop oa = objArrayOop(obj); 552 for(int index = 0; index < oa->length(); index++) { 553 guarantee(oa->obj_at(index)->is_oop_or_null(), "should be oop"); 554 } 555 } 556 557 void objArrayKlass::oop_verify_old_oop(oop obj, oop* p, bool allow_dirty) { 558 /* $$$ move into remembered set verification? 559 RememberedSet::verify_old_oop(obj, p, allow_dirty, true); 560 */ 561 } 562 void objArrayKlass::oop_verify_old_oop(oop obj, narrowOop* p, bool allow_dirty) {}