1 /*
2 * Copyright (c) 1997, 2011, 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 ak->set_lower_dimension(this_oop());
239 OrderAccess::storestore();
240 this_oop->set_higher_dimension(ak());
241 OrderAccess::storestore();
242 assert(ak->oop_is_objArray(), "incorrect initialization of objArrayKlass");
243 }
244 }
245 } else {
246 CHECK_UNHANDLED_OOPS_ONLY(Thread::current()->clear_unhandled_oops());
247 }
248
249 if (or_null) {
250 return ak->array_klass_or_null(n);
251 }
252 return ak->array_klass(n, CHECK_NULL);
253 }
254
255 klassOop objArrayKlass::array_klass_impl(bool or_null, TRAPS) {
256 return array_klass_impl(or_null, dimension() + 1, CHECK_NULL);
257 }
258
259 bool objArrayKlass::can_be_primary_super_slow() const {
260 if (!bottom_klass()->klass_part()->can_be_primary_super())
261 // array of interfaces
262 return false;
263 else
264 return Klass::can_be_primary_super_slow();
265 }
266
267 objArrayOop objArrayKlass::compute_secondary_supers(int num_extra_slots, TRAPS) {
268 // interfaces = { cloneable_klass, serializable_klass, elemSuper[], ... };
269 objArrayOop es = Klass::cast(element_klass())->secondary_supers();
270 objArrayHandle elem_supers (THREAD, es);
271 int num_elem_supers = elem_supers.is_null() ? 0 : elem_supers->length();
272 int num_secondaries = num_extra_slots + 2 + num_elem_supers;
273 if (num_secondaries == 2) {
274 // Must share this for correct bootstrapping!
275 return Universe::the_array_interfaces_array();
276 } else {
277 objArrayOop sec_oop = oopFactory::new_system_objArray(num_secondaries, CHECK_NULL);
278 objArrayHandle secondaries(THREAD, sec_oop);
279 secondaries->obj_at_put(num_extra_slots+0, SystemDictionary::Cloneable_klass());
280 secondaries->obj_at_put(num_extra_slots+1, SystemDictionary::Serializable_klass());
281 for (int i = 0; i < num_elem_supers; i++) {
282 klassOop elem_super = (klassOop) elem_supers->obj_at(i);
283 klassOop array_super = elem_super->klass_part()->array_klass_or_null();
284 assert(array_super != NULL, "must already have been created");
285 secondaries->obj_at_put(num_extra_slots+2+i, array_super);
286 }
287 return secondaries();
288 }
289 }
290
291 bool objArrayKlass::compute_is_subtype_of(klassOop k) {
292 if (!k->klass_part()->oop_is_objArray())
293 return arrayKlass::compute_is_subtype_of(k);
294
295 objArrayKlass* oak = objArrayKlass::cast(k);
296 return element_klass()->klass_part()->is_subtype_of(oak->element_klass());
297 }
298
299 void objArrayKlass::initialize(TRAPS) {
300 Klass::cast(bottom_klass())->initialize(THREAD); // dispatches to either instanceKlass or typeArrayKlass
301 }
302
303 #define ObjArrayKlass_SPECIALIZED_OOP_ITERATE(T, a, p, do_oop) \
304 { \
305 T* p = (T*)(a)->base(); \
306 T* const end = p + (a)->length(); \
307 while (p < end) { \
308 do_oop; \
309 p++; \
310 } \
311 }
312
313 #define ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(T, a, p, low, high, do_oop) \
314 { \
315 T* const l = (T*)(low); \
316 T* const h = (T*)(high); \
317 T* p = (T*)(a)->base(); \
318 T* end = p + (a)->length(); \
319 if (p < l) p = l; \
320 if (end > h) end = h; \
321 while (p < end) { \
322 do_oop; \
323 ++p; \
324 } \
325 }
326
327 #define ObjArrayKlass_OOP_ITERATE(a, p, do_oop) \
328 if (UseCompressedOops) { \
329 ObjArrayKlass_SPECIALIZED_OOP_ITERATE(narrowOop, \
330 a, p, do_oop) \
331 } else { \
332 ObjArrayKlass_SPECIALIZED_OOP_ITERATE(oop, \
333 a, p, do_oop) \
334 }
335
336 #define ObjArrayKlass_BOUNDED_OOP_ITERATE(a, p, low, high, do_oop) \
337 if (UseCompressedOops) { \
338 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \
339 a, p, low, high, do_oop) \
340 } else { \
341 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \
342 a, p, low, high, do_oop) \
343 }
344
345 void objArrayKlass::oop_follow_contents(oop obj) {
346 assert (obj->is_array(), "obj must be array");
347 objArrayOop(obj)->follow_header();
348 if (UseCompressedOops) {
349 objarray_follow_contents<narrowOop>(obj, 0);
350 } else {
351 objarray_follow_contents<oop>(obj, 0);
352 }
353 }
354
355 #ifndef SERIALGC
356 void objArrayKlass::oop_follow_contents(ParCompactionManager* cm,
357 oop obj) {
358 assert(obj->is_array(), "obj must be array");
359 objArrayOop(obj)->follow_header(cm);
360 if (UseCompressedOops) {
361 objarray_follow_contents<narrowOop>(cm, obj, 0);
362 } else {
363 objarray_follow_contents<oop>(cm, obj, 0);
364 }
365 }
366 #endif // SERIALGC
367
368 #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix) \
369 \
370 int objArrayKlass::oop_oop_iterate##nv_suffix(oop obj, \
371 OopClosureType* closure) { \
372 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \
373 assert (obj->is_array(), "obj must be array"); \
374 objArrayOop a = objArrayOop(obj); \
375 /* Get size before changing pointers. */ \
376 /* Don't call size() or oop_size() since that is a virtual call. */ \
377 int size = a->object_size(); \
378 if (closure->do_header()) { \
379 a->oop_iterate_header(closure); \
380 } \
381 ObjArrayKlass_OOP_ITERATE(a, p, (closure)->do_oop##nv_suffix(p)) \
382 return size; \
383 }
384
385 #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m(OopClosureType, nv_suffix) \
386 \
387 int objArrayKlass::oop_oop_iterate##nv_suffix##_m(oop obj, \
388 OopClosureType* closure, \
389 MemRegion mr) { \
390 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \
391 assert(obj->is_array(), "obj must be array"); \
392 objArrayOop a = objArrayOop(obj); \
393 /* Get size before changing pointers. */ \
394 /* Don't call size() or oop_size() since that is a virtual call */ \
395 int size = a->object_size(); \
396 if (closure->do_header()) { \
397 a->oop_iterate_header(closure, mr); \
398 } \
399 ObjArrayKlass_BOUNDED_OOP_ITERATE( \
400 a, p, mr.start(), mr.end(), (closure)->do_oop##nv_suffix(p)) \
401 return size; \
402 }
403
404 // Like oop_oop_iterate but only iterates over a specified range and only used
405 // for objArrayOops.
406 #define ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r(OopClosureType, nv_suffix) \
407 \
408 int objArrayKlass::oop_oop_iterate_range##nv_suffix(oop obj, \
409 OopClosureType* closure, \
410 int start, int end) { \
411 SpecializationStats::record_iterate_call##nv_suffix(SpecializationStats::oa); \
412 assert(obj->is_array(), "obj must be array"); \
413 objArrayOop a = objArrayOop(obj); \
414 /* Get size before changing pointers. */ \
415 /* Don't call size() or oop_size() since that is a virtual call */ \
416 int size = a->object_size(); \
417 if (UseCompressedOops) { \
418 HeapWord* low = start == 0 ? (HeapWord*)a : (HeapWord*)a->obj_at_addr<narrowOop>(start);\
419 /* this might be wierd if end needs to be aligned on HeapWord boundary */ \
420 HeapWord* high = (HeapWord*)((narrowOop*)a->base() + end); \
421 MemRegion mr(low, high); \
422 if (closure->do_header()) { \
423 a->oop_iterate_header(closure, mr); \
424 } \
425 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(narrowOop, \
426 a, p, low, high, (closure)->do_oop##nv_suffix(p)) \
427 } else { \
428 HeapWord* low = start == 0 ? (HeapWord*)a : (HeapWord*)a->obj_at_addr<oop>(start); \
429 HeapWord* high = (HeapWord*)((oop*)a->base() + end); \
430 MemRegion mr(low, high); \
431 if (closure->do_header()) { \
432 a->oop_iterate_header(closure, mr); \
433 } \
434 ObjArrayKlass_SPECIALIZED_BOUNDED_OOP_ITERATE(oop, \
435 a, p, low, high, (closure)->do_oop##nv_suffix(p)) \
436 } \
437 return size; \
438 }
439
440 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN)
441 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN)
442 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m)
443 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_m)
444 ALL_OOP_OOP_ITERATE_CLOSURES_1(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r)
445 ALL_OOP_OOP_ITERATE_CLOSURES_2(ObjArrayKlass_OOP_OOP_ITERATE_DEFN_r)
446
447 int objArrayKlass::oop_adjust_pointers(oop obj) {
448 assert(obj->is_objArray(), "obj must be obj array");
449 objArrayOop a = objArrayOop(obj);
450 // Get size before changing pointers.
451 // Don't call size() or oop_size() since that is a virtual call.
452 int size = a->object_size();
453 a->adjust_header();
454 ObjArrayKlass_OOP_ITERATE(a, p, MarkSweep::adjust_pointer(p))
455 return size;
456 }
457
458 #ifndef SERIALGC
459 void objArrayKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
460 assert(obj->is_objArray(), "obj must be obj array");
461 ObjArrayKlass_OOP_ITERATE( \
462 objArrayOop(obj), p, \
463 if (PSScavenge::should_scavenge(p)) { \
464 pm->claim_or_forward_depth(p); \
465 })
466 }
467
468 int objArrayKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
469 assert (obj->is_objArray(), "obj must be obj array");
470 objArrayOop a = objArrayOop(obj);
471 ObjArrayKlass_OOP_ITERATE(a, p, PSParallelCompact::adjust_pointer(p))
472 return a->object_size();
473 }
474
475 int objArrayKlass::oop_update_pointers(ParCompactionManager* cm, oop obj,
476 HeapWord* beg_addr, HeapWord* end_addr) {
477 assert (obj->is_objArray(), "obj must be obj array");
478 objArrayOop a = objArrayOop(obj);
479 ObjArrayKlass_BOUNDED_OOP_ITERATE( \
480 a, p, beg_addr, end_addr, \
481 PSParallelCompact::adjust_pointer(p))
482 return a->object_size();
483 }
484 #endif // SERIALGC
485
486 // JVM support
487
488 jint objArrayKlass::compute_modifier_flags(TRAPS) const {
489 // The modifier for an objectArray is the same as its element
490 if (element_klass() == NULL) {
491 assert(Universe::is_bootstrapping(), "partial objArray only at startup");
492 return JVM_ACC_ABSTRACT | JVM_ACC_FINAL | JVM_ACC_PUBLIC;
493 }
494 // Return the flags of the bottom element type.
495 jint element_flags = Klass::cast(bottom_klass())->compute_modifier_flags(CHECK_0);
496
497 return (element_flags & (JVM_ACC_PUBLIC | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED))
498 | (JVM_ACC_ABSTRACT | JVM_ACC_FINAL);
499 }
500
501
502 #ifndef PRODUCT
503 // Printing
504
505 void objArrayKlass::oop_print_on(oop obj, outputStream* st) {
506 arrayKlass::oop_print_on(obj, st);
507 assert(obj->is_objArray(), "must be objArray");
508 objArrayOop oa = objArrayOop(obj);
509 int print_len = MIN2((intx) oa->length(), MaxElementPrintSize);
510 for(int index = 0; index < print_len; index++) {
511 st->print(" - %3d : ", index);
512 oa->obj_at(index)->print_value_on(st);
513 st->cr();
514 }
515 int remaining = oa->length() - print_len;
516 if (remaining > 0) {
517 tty->print_cr(" - <%d more elements, increase MaxElementPrintSize to print>", remaining);
518 }
519 }
520
521 #endif //PRODUCT
522
523 static int max_objArray_print_length = 4;
524
525 void objArrayKlass::oop_print_value_on(oop obj, outputStream* st) {
526 assert(obj->is_objArray(), "must be objArray");
527 st->print("a ");
528 element_klass()->print_value_on(st);
529 int len = objArrayOop(obj)->length();
530 st->print("[%d] ", len);
531 obj->print_address_on(st);
532 if (NOT_PRODUCT(PrintOopAddress ||) PrintMiscellaneous && (WizardMode || Verbose)) {
533 st->print("{");
534 for (int i = 0; i < len; i++) {
535 if (i > max_objArray_print_length) {
536 st->print("..."); break;
537 }
538 st->print(" "INTPTR_FORMAT, (intptr_t)(void*)objArrayOop(obj)->obj_at(i));
539 }
540 st->print(" }");
541 }
542 }
543
544 const char* objArrayKlass::internal_name() const {
545 return external_name();
546 }
547
548 // Verification
549
550 void objArrayKlass::oop_verify_on(oop obj, outputStream* st) {
551 arrayKlass::oop_verify_on(obj, st);
552 guarantee(obj->is_objArray(), "must be objArray");
553 objArrayOop oa = objArrayOop(obj);
554 for(int index = 0; index < oa->length(); index++) {
555 guarantee(oa->obj_at(index)->is_oop_or_null(), "should be oop");
556 }
557 }
558
559 void objArrayKlass::oop_verify_old_oop(oop obj, oop* p, bool allow_dirty) {
560 /* $$$ move into remembered set verification?
561 RememberedSet::verify_old_oop(obj, p, allow_dirty, true);
562 */
563 }
564 void objArrayKlass::oop_verify_old_oop(oop obj, narrowOop* p, bool allow_dirty) {}