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src/share/vm/oops/objArrayKlass.cpp@8012aa3ccede
src/share/vm/oops/objArrayKlass.cpp
Thu, 13 Jan 2011 22:15:41 -0800
- author
- never
- date
- Thu, 13 Jan 2011 22:15:41 -0800
- changeset 2462
- 8012aa3ccede
- parent 2314
- f95d63e2154a
- child 2439
- d4fca0a6abde
- permissions
- -rw-r--r--
4926272: methodOopDesc::method_from_bcp is unsafe
Reviewed-by: coleenp, jrose, kvn, dcubed
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 */
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
56 int objArrayKlass::oop_size(oop obj) const {
57 assert(obj->is_objArray(), "must be object array");
58 return objArrayOop(obj)->object_size();
59 }
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 }
78 static int multi_alloc_counter = 0;
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 }
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) {
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.");
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 }
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");
172 if (!d->is_objArray()) {
173 THROW(vmSymbols::java_lang_ArrayStoreException());
174 }
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 }
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 }
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 }
211 klassOop objArrayKlass::array_klass_impl(objArrayKlassHandle this_oop, bool or_null, int n, TRAPS) {
213 assert(this_oop->dimension() <= n, "check order of chain");
214 int dimension = this_oop->dimension();
215 if (dimension == n)
216 return this_oop();
218 objArrayKlassHandle ak (THREAD, this_oop->higher_dimension());
219 if (ak.is_null()) {
220 if (or_null) return NULL;
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);
229 // Check if another thread beat us
230 ak = objArrayKlassHandle(THREAD, this_oop->higher_dimension());
231 if( ak.is_null() ) {
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 }
247 if (or_null) {
248 return ak->array_klass_or_null(n);
249 }
250 return ak->array_klass(n, CHECK_NULL);
251 }
253 klassOop objArrayKlass::array_klass_impl(bool or_null, TRAPS) {
254 return array_klass_impl(or_null, dimension() + 1, CHECK_NULL);
255 }
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 }
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 }
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);
293 objArrayKlass* oak = objArrayKlass::cast(k);
294 return element_klass()->klass_part()->is_subtype_of(oak->element_klass());
295 }
297 void objArrayKlass::initialize(TRAPS) {
298 Klass::cast(bottom_klass())->initialize(THREAD); // dispatches to either instanceKlass or typeArrayKlass
299 }
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 }
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 }
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 }
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 }
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 }
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
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 }
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 }
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 }
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)
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 }
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 }
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 }
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
484 // JVM support
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);
495 return (element_flags & (JVM_ACC_PUBLIC | JVM_ACC_PRIVATE | JVM_ACC_PROTECTED))
496 | (JVM_ACC_ABSTRACT | JVM_ACC_FINAL);
497 }
500 #ifndef PRODUCT
501 // Printing
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 }
519 #endif //PRODUCT
521 static int max_objArray_print_length = 4;
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 }
542 const char* objArrayKlass::internal_name() const {
543 return external_name();
544 }
546 // Verification
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 }
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) {}
