Wed, 30 Mar 2011 07:47:19 -0700
7031614: jmap -permstat fails with java.lang.InternalError in sun.jvm.hotspot.oops.OopField.getValue
Reviewed-by: kvn, dcubed
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 */
25 #include "precompiled.hpp"
26 #include "classfile/javaClasses.hpp"
27 #include "classfile/systemDictionary.hpp"
28 #include "gc_implementation/shared/markSweep.inline.hpp"
29 #include "gc_interface/collectedHeap.inline.hpp"
30 #include "interpreter/oopMapCache.hpp"
31 #include "memory/gcLocker.hpp"
32 #include "oops/constantPoolOop.hpp"
33 #include "oops/instanceKlass.hpp"
34 #include "oops/instanceMirrorKlass.hpp"
35 #include "oops/instanceKlassKlass.hpp"
36 #include "oops/instanceRefKlass.hpp"
37 #include "oops/objArrayKlassKlass.hpp"
38 #include "oops/objArrayOop.hpp"
39 #include "oops/oop.inline.hpp"
40 #include "oops/oop.inline2.hpp"
41 #include "oops/symbol.hpp"
42 #include "oops/typeArrayOop.hpp"
43 #include "prims/jvmtiExport.hpp"
44 #include "runtime/fieldDescriptor.hpp"
45 #ifndef SERIALGC
46 #include "gc_implementation/parNew/parOopClosures.inline.hpp"
47 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp"
48 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp"
49 #include "memory/cardTableRS.hpp"
50 #include "oops/oop.pcgc.inline.hpp"
51 #endif
53 klassOop instanceKlassKlass::create_klass(TRAPS) {
54 instanceKlassKlass o;
55 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj());
56 KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL);
57 // Make sure size calculation is right
58 assert(k()->size() == align_object_size(header_size()), "wrong size for object");
59 java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror
60 return k();
61 }
63 int instanceKlassKlass::oop_size(oop obj) const {
64 assert(obj->is_klass(), "must be klass");
65 return instanceKlass::cast(klassOop(obj))->object_size();
66 }
68 bool instanceKlassKlass::oop_is_parsable(oop obj) const {
69 assert(obj->is_klass(), "must be klass");
70 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
71 return (!ik->null_vtbl()) && ik->object_is_parsable();
72 }
74 void instanceKlassKlass::iterate_c_heap_oops(instanceKlass* ik,
75 OopClosure* closure) {
76 if (ik->oop_map_cache() != NULL) {
77 ik->oop_map_cache()->oop_iterate(closure);
78 }
80 if (ik->jni_ids() != NULL) {
81 ik->jni_ids()->oops_do(closure);
82 }
83 }
85 void instanceKlassKlass::oop_follow_contents(oop obj) {
86 assert(obj->is_klass(),"must be a klass");
87 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
89 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
90 {
91 HandleMark hm;
92 ik->vtable()->oop_follow_contents();
93 ik->itable()->oop_follow_contents();
94 }
96 MarkSweep::mark_and_push(ik->adr_array_klasses());
97 MarkSweep::mark_and_push(ik->adr_methods());
98 MarkSweep::mark_and_push(ik->adr_method_ordering());
99 MarkSweep::mark_and_push(ik->adr_local_interfaces());
100 MarkSweep::mark_and_push(ik->adr_transitive_interfaces());
101 MarkSweep::mark_and_push(ik->adr_fields());
102 MarkSweep::mark_and_push(ik->adr_constants());
103 MarkSweep::mark_and_push(ik->adr_class_loader());
104 MarkSweep::mark_and_push(ik->adr_inner_classes());
105 MarkSweep::mark_and_push(ik->adr_protection_domain());
106 MarkSweep::mark_and_push(ik->adr_host_klass());
107 MarkSweep::mark_and_push(ik->adr_signers());
108 MarkSweep::mark_and_push(ik->adr_bootstrap_method());
109 MarkSweep::mark_and_push(ik->adr_class_annotations());
110 MarkSweep::mark_and_push(ik->adr_fields_annotations());
111 MarkSweep::mark_and_push(ik->adr_methods_annotations());
112 MarkSweep::mark_and_push(ik->adr_methods_parameter_annotations());
113 MarkSweep::mark_and_push(ik->adr_methods_default_annotations());
115 // We do not follow adr_implementors() here. It is followed later
116 // in instanceKlass::follow_weak_klass_links()
118 klassKlass::oop_follow_contents(obj);
120 iterate_c_heap_oops(ik, &MarkSweep::mark_and_push_closure);
121 }
123 #ifndef SERIALGC
124 void instanceKlassKlass::oop_follow_contents(ParCompactionManager* cm,
125 oop obj) {
126 assert(obj->is_klass(),"must be a klass");
127 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
129 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
130 ik->vtable()->oop_follow_contents(cm);
131 ik->itable()->oop_follow_contents(cm);
133 PSParallelCompact::mark_and_push(cm, ik->adr_array_klasses());
134 PSParallelCompact::mark_and_push(cm, ik->adr_methods());
135 PSParallelCompact::mark_and_push(cm, ik->adr_method_ordering());
136 PSParallelCompact::mark_and_push(cm, ik->adr_local_interfaces());
137 PSParallelCompact::mark_and_push(cm, ik->adr_transitive_interfaces());
138 PSParallelCompact::mark_and_push(cm, ik->adr_fields());
139 PSParallelCompact::mark_and_push(cm, ik->adr_constants());
140 PSParallelCompact::mark_and_push(cm, ik->adr_class_loader());
141 PSParallelCompact::mark_and_push(cm, ik->adr_inner_classes());
142 PSParallelCompact::mark_and_push(cm, ik->adr_protection_domain());
143 PSParallelCompact::mark_and_push(cm, ik->adr_host_klass());
144 PSParallelCompact::mark_and_push(cm, ik->adr_signers());
145 PSParallelCompact::mark_and_push(cm, ik->adr_bootstrap_method());
146 PSParallelCompact::mark_and_push(cm, ik->adr_class_annotations());
147 PSParallelCompact::mark_and_push(cm, ik->adr_fields_annotations());
148 PSParallelCompact::mark_and_push(cm, ik->adr_methods_annotations());
149 PSParallelCompact::mark_and_push(cm, ik->adr_methods_parameter_annotations());
150 PSParallelCompact::mark_and_push(cm, ik->adr_methods_default_annotations());
152 // We do not follow adr_implementor() here. It is followed later
153 // in instanceKlass::follow_weak_klass_links()
155 klassKlass::oop_follow_contents(cm, obj);
157 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
158 iterate_c_heap_oops(ik, &mark_and_push_closure);
159 }
160 #endif // SERIALGC
162 int instanceKlassKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
163 assert(obj->is_klass(),"must be a klass");
164 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
165 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
166 // Get size before changing pointers.
167 // Don't call size() or oop_size() since that is a virtual call.
168 int size = ik->object_size();
170 ik->vtable()->oop_oop_iterate(blk);
171 ik->itable()->oop_oop_iterate(blk);
173 blk->do_oop(ik->adr_array_klasses());
174 blk->do_oop(ik->adr_methods());
175 blk->do_oop(ik->adr_method_ordering());
176 blk->do_oop(ik->adr_local_interfaces());
177 blk->do_oop(ik->adr_transitive_interfaces());
178 blk->do_oop(ik->adr_fields());
179 blk->do_oop(ik->adr_constants());
180 blk->do_oop(ik->adr_class_loader());
181 blk->do_oop(ik->adr_protection_domain());
182 blk->do_oop(ik->adr_host_klass());
183 blk->do_oop(ik->adr_signers());
184 blk->do_oop(ik->adr_inner_classes());
185 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
186 blk->do_oop(&ik->adr_implementors()[i]);
187 }
188 blk->do_oop(ik->adr_bootstrap_method());
189 blk->do_oop(ik->adr_class_annotations());
190 blk->do_oop(ik->adr_fields_annotations());
191 blk->do_oop(ik->adr_methods_annotations());
192 blk->do_oop(ik->adr_methods_parameter_annotations());
193 blk->do_oop(ik->adr_methods_default_annotations());
195 klassKlass::oop_oop_iterate(obj, blk);
197 if(ik->oop_map_cache() != NULL) ik->oop_map_cache()->oop_iterate(blk);
198 return size;
199 }
201 int instanceKlassKlass::oop_oop_iterate_m(oop obj, OopClosure* blk,
202 MemRegion mr) {
203 assert(obj->is_klass(),"must be a klass");
204 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
205 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
206 // Get size before changing pointers.
207 // Don't call size() or oop_size() since that is a virtual call.
208 int size = ik->object_size();
210 ik->vtable()->oop_oop_iterate_m(blk, mr);
211 ik->itable()->oop_oop_iterate_m(blk, mr);
213 oop* adr;
214 adr = ik->adr_array_klasses();
215 if (mr.contains(adr)) blk->do_oop(adr);
216 adr = ik->adr_methods();
217 if (mr.contains(adr)) blk->do_oop(adr);
218 adr = ik->adr_method_ordering();
219 if (mr.contains(adr)) blk->do_oop(adr);
220 adr = ik->adr_local_interfaces();
221 if (mr.contains(adr)) blk->do_oop(adr);
222 adr = ik->adr_transitive_interfaces();
223 if (mr.contains(adr)) blk->do_oop(adr);
224 adr = ik->adr_fields();
225 if (mr.contains(adr)) blk->do_oop(adr);
226 adr = ik->adr_constants();
227 if (mr.contains(adr)) blk->do_oop(adr);
228 adr = ik->adr_class_loader();
229 if (mr.contains(adr)) blk->do_oop(adr);
230 adr = ik->adr_protection_domain();
231 if (mr.contains(adr)) blk->do_oop(adr);
232 adr = ik->adr_host_klass();
233 if (mr.contains(adr)) blk->do_oop(adr);
234 adr = ik->adr_signers();
235 if (mr.contains(adr)) blk->do_oop(adr);
236 adr = ik->adr_inner_classes();
237 if (mr.contains(adr)) blk->do_oop(adr);
238 adr = ik->adr_implementors();
239 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
240 if (mr.contains(&adr[i])) blk->do_oop(&adr[i]);
241 }
242 adr = ik->adr_bootstrap_method();
243 if (mr.contains(adr)) blk->do_oop(adr);
244 adr = ik->adr_class_annotations();
245 if (mr.contains(adr)) blk->do_oop(adr);
246 adr = ik->adr_fields_annotations();
247 if (mr.contains(adr)) blk->do_oop(adr);
248 adr = ik->adr_methods_annotations();
249 if (mr.contains(adr)) blk->do_oop(adr);
250 adr = ik->adr_methods_parameter_annotations();
251 if (mr.contains(adr)) blk->do_oop(adr);
252 adr = ik->adr_methods_default_annotations();
253 if (mr.contains(adr)) blk->do_oop(adr);
255 klassKlass::oop_oop_iterate_m(obj, blk, mr);
257 if(ik->oop_map_cache() != NULL) ik->oop_map_cache()->oop_iterate(blk, mr);
258 return size;
259 }
261 int instanceKlassKlass::oop_adjust_pointers(oop obj) {
262 assert(obj->is_klass(),"must be a klass");
263 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
265 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
266 ik->vtable()->oop_adjust_pointers();
267 ik->itable()->oop_adjust_pointers();
269 MarkSweep::adjust_pointer(ik->adr_array_klasses());
270 MarkSweep::adjust_pointer(ik->adr_methods());
271 MarkSweep::adjust_pointer(ik->adr_method_ordering());
272 MarkSweep::adjust_pointer(ik->adr_local_interfaces());
273 MarkSweep::adjust_pointer(ik->adr_transitive_interfaces());
274 MarkSweep::adjust_pointer(ik->adr_fields());
275 MarkSweep::adjust_pointer(ik->adr_constants());
276 MarkSweep::adjust_pointer(ik->adr_class_loader());
277 MarkSweep::adjust_pointer(ik->adr_protection_domain());
278 MarkSweep::adjust_pointer(ik->adr_host_klass());
279 MarkSweep::adjust_pointer(ik->adr_signers());
280 MarkSweep::adjust_pointer(ik->adr_inner_classes());
281 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
282 MarkSweep::adjust_pointer(&ik->adr_implementors()[i]);
283 }
284 MarkSweep::adjust_pointer(ik->adr_bootstrap_method());
285 MarkSweep::adjust_pointer(ik->adr_class_annotations());
286 MarkSweep::adjust_pointer(ik->adr_fields_annotations());
287 MarkSweep::adjust_pointer(ik->adr_methods_annotations());
288 MarkSweep::adjust_pointer(ik->adr_methods_parameter_annotations());
289 MarkSweep::adjust_pointer(ik->adr_methods_default_annotations());
291 iterate_c_heap_oops(ik, &MarkSweep::adjust_root_pointer_closure);
293 return klassKlass::oop_adjust_pointers(obj);
294 }
296 #ifndef SERIALGC
297 void instanceKlassKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
298 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
300 oop* loader_addr = ik->adr_class_loader();
301 if (PSScavenge::should_scavenge(loader_addr)) {
302 pm->claim_or_forward_depth(loader_addr);
303 }
305 oop* pd_addr = ik->adr_protection_domain();
306 if (PSScavenge::should_scavenge(pd_addr)) {
307 pm->claim_or_forward_depth(pd_addr);
308 }
310 oop* hk_addr = ik->adr_host_klass();
311 if (PSScavenge::should_scavenge(hk_addr)) {
312 pm->claim_or_forward_depth(hk_addr);
313 }
315 oop* sg_addr = ik->adr_signers();
316 if (PSScavenge::should_scavenge(sg_addr)) {
317 pm->claim_or_forward_depth(sg_addr);
318 }
320 oop* bsm_addr = ik->adr_bootstrap_method();
321 if (PSScavenge::should_scavenge(bsm_addr)) {
322 pm->claim_or_forward_depth(bsm_addr);
323 }
325 klassKlass::oop_push_contents(pm, obj);
326 }
328 int instanceKlassKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
329 assert(obj->is_klass(),"must be a klass");
330 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(),
331 "must be instance klass");
333 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
334 ik->vtable()->oop_update_pointers(cm);
335 ik->itable()->oop_update_pointers(cm);
337 oop* const beg_oop = ik->oop_block_beg();
338 oop* const end_oop = ik->oop_block_end();
339 for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) {
340 PSParallelCompact::adjust_pointer(cur_oop);
341 }
343 OopClosure* closure = PSParallelCompact::adjust_root_pointer_closure();
344 iterate_c_heap_oops(ik, closure);
346 klassKlass::oop_update_pointers(cm, obj);
347 return ik->object_size();
348 }
350 #endif // SERIALGC
352 klassOop
353 instanceKlassKlass::allocate_instance_klass(Symbol* name, int vtable_len, int itable_len,
354 int static_field_size,
355 unsigned nonstatic_oop_map_count,
356 ReferenceType rt, TRAPS) {
358 const int nonstatic_oop_map_size =
359 instanceKlass::nonstatic_oop_map_size(nonstatic_oop_map_count);
360 int size = instanceKlass::object_size(align_object_offset(vtable_len) + align_object_offset(itable_len) + nonstatic_oop_map_size);
362 // Allocation
363 KlassHandle h_this_klass(THREAD, as_klassOop());
364 KlassHandle k;
365 if (rt == REF_NONE) {
366 if (name != vmSymbols::java_lang_Class()) {
367 // regular klass
368 instanceKlass o;
369 k = base_create_klass(h_this_klass, size, o.vtbl_value(), CHECK_NULL);
370 } else {
371 // Class
372 instanceMirrorKlass o;
373 k = base_create_klass(h_this_klass, size, o.vtbl_value(), CHECK_NULL);
374 }
375 } else {
376 // reference klass
377 instanceRefKlass o;
378 k = base_create_klass(h_this_klass, size, o.vtbl_value(), CHECK_NULL);
379 }
380 {
381 No_Safepoint_Verifier no_safepoint; // until k becomes parsable
382 instanceKlass* ik = (instanceKlass*) k()->klass_part();
383 assert(!k()->is_parsable(), "not expecting parsability yet.");
385 // The sizes of these these three variables are used for determining the
386 // size of the instanceKlassOop. It is critical that these are set to the right
387 // sizes before the first GC, i.e., when we allocate the mirror.
388 ik->set_vtable_length(vtable_len);
389 ik->set_itable_length(itable_len);
390 ik->set_static_field_size(static_field_size);
391 ik->set_nonstatic_oop_map_size(nonstatic_oop_map_size);
392 assert(k()->size() == size, "wrong size for object");
394 ik->set_array_klasses(NULL);
395 ik->set_methods(NULL);
396 ik->set_method_ordering(NULL);
397 ik->set_local_interfaces(NULL);
398 ik->set_transitive_interfaces(NULL);
399 ik->init_implementor();
400 ik->set_fields(NULL);
401 ik->set_constants(NULL);
402 ik->set_class_loader(NULL);
403 ik->set_protection_domain(NULL);
404 ik->set_host_klass(NULL);
405 ik->set_signers(NULL);
406 ik->set_source_file_name(NULL);
407 ik->set_source_debug_extension(NULL);
408 ik->set_source_debug_extension(NULL);
409 ik->set_array_name(NULL);
410 ik->set_inner_classes(NULL);
411 ik->set_static_oop_field_count(0);
412 ik->set_nonstatic_field_size(0);
413 ik->set_is_marked_dependent(false);
414 ik->set_init_state(instanceKlass::allocated);
415 ik->set_init_thread(NULL);
416 ik->set_reference_type(rt);
417 ik->set_oop_map_cache(NULL);
418 ik->set_jni_ids(NULL);
419 ik->set_osr_nmethods_head(NULL);
420 ik->set_breakpoints(NULL);
421 ik->init_previous_versions();
422 ik->set_generic_signature(NULL);
423 ik->set_bootstrap_method(NULL);
424 ik->release_set_methods_jmethod_ids(NULL);
425 ik->release_set_methods_cached_itable_indices(NULL);
426 ik->set_class_annotations(NULL);
427 ik->set_fields_annotations(NULL);
428 ik->set_methods_annotations(NULL);
429 ik->set_methods_parameter_annotations(NULL);
430 ik->set_methods_default_annotations(NULL);
431 ik->set_enclosing_method_indices(0, 0);
432 ik->set_jvmti_cached_class_field_map(NULL);
433 ik->set_initial_method_idnum(0);
434 assert(k()->is_parsable(), "should be parsable here.");
436 // initialize the non-header words to zero
437 intptr_t* p = (intptr_t*)k();
438 for (int index = instanceKlass::header_size(); index < size; index++) {
439 p[index] = NULL_WORD;
440 }
442 // To get verify to work - must be set to partial loaded before first GC point.
443 k()->set_partially_loaded();
444 }
445 return k();
446 }
450 #ifndef PRODUCT
452 // Printing
454 #define BULLET " - "
456 static const char* state_names[] = {
457 "unparseable_by_gc", "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error"
458 };
461 void instanceKlassKlass::oop_print_on(oop obj, outputStream* st) {
462 assert(obj->is_klass(), "must be klass");
463 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
464 klassKlass::oop_print_on(obj, st);
466 st->print(BULLET"instance size: %d", ik->size_helper()); st->cr();
467 st->print(BULLET"klass size: %d", ik->object_size()); st->cr();
468 st->print(BULLET"access: "); ik->access_flags().print_on(st); st->cr();
469 st->print(BULLET"state: "); st->print_cr(state_names[ik->_init_state]);
470 st->print(BULLET"name: "); ik->name()->print_value_on(st); st->cr();
471 st->print(BULLET"super: "); ik->super()->print_value_on(st); st->cr();
472 st->print(BULLET"sub: ");
473 Klass* sub = ik->subklass();
474 int n;
475 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) {
476 if (n < MaxSubklassPrintSize) {
477 sub->as_klassOop()->print_value_on(st);
478 st->print(" ");
479 }
480 }
481 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize);
482 st->cr();
484 if (ik->is_interface()) {
485 st->print_cr(BULLET"nof implementors: %d", ik->nof_implementors());
486 int print_impl = 0;
487 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
488 if (ik->implementor(i) != NULL) {
489 if (++print_impl == 1)
490 st->print_cr(BULLET"implementor: ");
491 st->print(" ");
492 ik->implementor(i)->print_value_on(st);
493 }
494 }
495 if (print_impl > 0) st->cr();
496 }
498 st->print(BULLET"arrays: "); ik->array_klasses()->print_value_on(st); st->cr();
499 st->print(BULLET"methods: "); ik->methods()->print_value_on(st); st->cr();
500 if (Verbose) {
501 objArrayOop methods = ik->methods();
502 for(int i = 0; i < methods->length(); i++) {
503 tty->print("%d : ", i); methods->obj_at(i)->print_value(); tty->cr();
504 }
505 }
506 st->print(BULLET"method ordering: "); ik->method_ordering()->print_value_on(st); st->cr();
507 st->print(BULLET"local interfaces: "); ik->local_interfaces()->print_value_on(st); st->cr();
508 st->print(BULLET"trans. interfaces: "); ik->transitive_interfaces()->print_value_on(st); st->cr();
509 st->print(BULLET"constants: "); ik->constants()->print_value_on(st); st->cr();
510 st->print(BULLET"class loader: "); ik->class_loader()->print_value_on(st); st->cr();
511 st->print(BULLET"protection domain: "); ik->protection_domain()->print_value_on(st); st->cr();
512 st->print(BULLET"host class: "); ik->host_klass()->print_value_on(st); st->cr();
513 st->print(BULLET"signers: "); ik->signers()->print_value_on(st); st->cr();
514 if (ik->source_file_name() != NULL) {
515 st->print(BULLET"source file: ");
516 ik->source_file_name()->print_value_on(st);
517 st->cr();
518 }
519 if (ik->source_debug_extension() != NULL) {
520 st->print(BULLET"source debug extension: ");
521 ik->source_debug_extension()->print_value_on(st);
522 st->cr();
523 }
525 {
526 ResourceMark rm;
527 // PreviousVersionInfo objects returned via PreviousVersionWalker
528 // contain a GrowableArray of handles. We have to clean up the
529 // GrowableArray _after_ the PreviousVersionWalker destructor
530 // has destroyed the handles.
531 {
532 bool have_pv = false;
533 PreviousVersionWalker pvw(ik);
534 for (PreviousVersionInfo * pv_info = pvw.next_previous_version();
535 pv_info != NULL; pv_info = pvw.next_previous_version()) {
536 if (!have_pv)
537 st->print(BULLET"previous version: ");
538 have_pv = true;
539 pv_info->prev_constant_pool_handle()()->print_value_on(st);
540 }
541 if (have_pv) st->cr();
542 } // pvw is cleaned up
543 } // rm is cleaned up
545 if (ik->bootstrap_method() != NULL) {
546 st->print(BULLET"bootstrap method: ");
547 ik->bootstrap_method()->print_value_on(st);
548 st->cr();
549 }
550 if (ik->generic_signature() != NULL) {
551 st->print(BULLET"generic signature: ");
552 ik->generic_signature()->print_value_on(st);
553 st->cr();
554 }
555 st->print(BULLET"inner classes: "); ik->inner_classes()->print_value_on(st); st->cr();
556 st->print(BULLET"java mirror: "); ik->java_mirror()->print_value_on(st); st->cr();
557 st->print(BULLET"vtable length %d (start addr: " INTPTR_FORMAT ")", ik->vtable_length(), ik->start_of_vtable()); st->cr();
558 st->print(BULLET"itable length %d (start addr: " INTPTR_FORMAT ")", ik->itable_length(), ik->start_of_itable()); st->cr();
559 st->print_cr(BULLET"---- static fields (%d words):", ik->static_field_size());
560 FieldPrinter print_static_field(st);
561 ik->do_local_static_fields(&print_static_field);
562 st->print_cr(BULLET"---- non-static fields (%d words):", ik->nonstatic_field_size());
563 FieldPrinter print_nonstatic_field(st);
564 ik->do_nonstatic_fields(&print_nonstatic_field);
566 st->print(BULLET"non-static oop maps: ");
567 OopMapBlock* map = ik->start_of_nonstatic_oop_maps();
568 OopMapBlock* end_map = map + ik->nonstatic_oop_map_count();
569 while (map < end_map) {
570 st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->count() - 1));
571 map++;
572 }
573 st->cr();
574 }
576 #endif //PRODUCT
578 void instanceKlassKlass::oop_print_value_on(oop obj, outputStream* st) {
579 assert(obj->is_klass(), "must be klass");
580 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
581 ik->name()->print_value_on(st);
582 }
584 const char* instanceKlassKlass::internal_name() const {
585 return "{instance class}";
586 }
588 // Verification
590 class VerifyFieldClosure: public OopClosure {
591 protected:
592 template <class T> void do_oop_work(T* p) {
593 guarantee(Universe::heap()->is_in(p), "should be in heap");
594 oop obj = oopDesc::load_decode_heap_oop(p);
595 guarantee(obj->is_oop_or_null(), "should be in heap");
596 }
597 public:
598 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); }
599 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); }
600 };
602 void instanceKlassKlass::oop_verify_on(oop obj, outputStream* st) {
603 klassKlass::oop_verify_on(obj, st);
604 if (!obj->partially_loaded()) {
605 Thread *thread = Thread::current();
606 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
608 #ifndef PRODUCT
609 // Avoid redundant verifies
610 if (ik->_verify_count == Universe::verify_count()) return;
611 ik->_verify_count = Universe::verify_count();
612 #endif
613 // Verify that klass is present in SystemDictionary
614 if (ik->is_loaded() && !ik->is_anonymous()) {
615 Symbol* h_name = ik->name();
616 Handle h_loader (thread, ik->class_loader());
617 Handle h_obj(thread, obj);
618 SystemDictionary::verify_obj_klass_present(h_obj, h_name, h_loader);
619 }
621 // Verify static fields
622 VerifyFieldClosure blk;
624 // Verify vtables
625 if (ik->is_linked()) {
626 ResourceMark rm(thread);
627 // $$$ This used to be done only for m/s collections. Doing it
628 // always seemed a valid generalization. (DLD -- 6/00)
629 ik->vtable()->verify(st);
630 }
632 // Verify oop map cache
633 if (ik->oop_map_cache() != NULL) {
634 ik->oop_map_cache()->verify();
635 }
637 // Verify first subklass
638 if (ik->subklass_oop() != NULL) {
639 guarantee(ik->subklass_oop()->is_perm(), "should be in permspace");
640 guarantee(ik->subklass_oop()->is_klass(), "should be klass");
641 }
643 // Verify siblings
644 klassOop super = ik->super();
645 Klass* sib = ik->next_sibling();
646 int sib_count = 0;
647 while (sib != NULL) {
648 if (sib == ik) {
649 fatal(err_msg("subclass cycle of length %d", sib_count));
650 }
651 if (sib_count >= 100000) {
652 fatal(err_msg("suspiciously long subclass list %d", sib_count));
653 }
654 guarantee(sib->as_klassOop()->is_klass(), "should be klass");
655 guarantee(sib->as_klassOop()->is_perm(), "should be in permspace");
656 guarantee(sib->super() == super, "siblings should have same superklass");
657 sib = sib->next_sibling();
658 }
660 // Verify implementor fields
661 bool saw_null_impl = false;
662 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
663 klassOop im = ik->implementor(i);
664 if (im == NULL) { saw_null_impl = true; continue; }
665 guarantee(!saw_null_impl, "non-nulls must preceded all nulls");
666 guarantee(ik->is_interface(), "only interfaces should have implementor set");
667 guarantee(i < ik->nof_implementors(), "should only have one implementor");
668 guarantee(im->is_perm(), "should be in permspace");
669 guarantee(im->is_klass(), "should be klass");
670 guarantee(!Klass::cast(klassOop(im))->is_interface(), "implementors cannot be interfaces");
671 }
673 // Verify local interfaces
674 objArrayOop local_interfaces = ik->local_interfaces();
675 guarantee(local_interfaces->is_perm(), "should be in permspace");
676 guarantee(local_interfaces->is_objArray(), "should be obj array");
677 int j;
678 for (j = 0; j < local_interfaces->length(); j++) {
679 oop e = local_interfaces->obj_at(j);
680 guarantee(e->is_klass() && Klass::cast(klassOop(e))->is_interface(), "invalid local interface");
681 }
683 // Verify transitive interfaces
684 objArrayOop transitive_interfaces = ik->transitive_interfaces();
685 guarantee(transitive_interfaces->is_perm(), "should be in permspace");
686 guarantee(transitive_interfaces->is_objArray(), "should be obj array");
687 for (j = 0; j < transitive_interfaces->length(); j++) {
688 oop e = transitive_interfaces->obj_at(j);
689 guarantee(e->is_klass() && Klass::cast(klassOop(e))->is_interface(), "invalid transitive interface");
690 }
692 // Verify methods
693 objArrayOop methods = ik->methods();
694 guarantee(methods->is_perm(), "should be in permspace");
695 guarantee(methods->is_objArray(), "should be obj array");
696 for (j = 0; j < methods->length(); j++) {
697 guarantee(methods->obj_at(j)->is_method(), "non-method in methods array");
698 }
699 for (j = 0; j < methods->length() - 1; j++) {
700 methodOop m1 = methodOop(methods->obj_at(j));
701 methodOop m2 = methodOop(methods->obj_at(j + 1));
702 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly");
703 }
705 // Verify method ordering
706 typeArrayOop method_ordering = ik->method_ordering();
707 guarantee(method_ordering->is_perm(), "should be in permspace");
708 guarantee(method_ordering->is_typeArray(), "should be type array");
709 int length = method_ordering->length();
710 if (JvmtiExport::can_maintain_original_method_order()) {
711 guarantee(length == methods->length(), "invalid method ordering length");
712 jlong sum = 0;
713 for (j = 0; j < length; j++) {
714 int original_index = method_ordering->int_at(j);
715 guarantee(original_index >= 0 && original_index < length, "invalid method ordering index");
716 sum += original_index;
717 }
718 // Verify sum of indices 0,1,...,length-1
719 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum");
720 } else {
721 guarantee(length == 0, "invalid method ordering length");
722 }
724 // Verify JNI static field identifiers
725 if (ik->jni_ids() != NULL) {
726 ik->jni_ids()->verify(ik->as_klassOop());
727 }
729 // Verify other fields
730 if (ik->array_klasses() != NULL) {
731 guarantee(ik->array_klasses()->is_perm(), "should be in permspace");
732 guarantee(ik->array_klasses()->is_klass(), "should be klass");
733 }
734 guarantee(ik->fields()->is_perm(), "should be in permspace");
735 guarantee(ik->fields()->is_typeArray(), "should be type array");
736 guarantee(ik->constants()->is_perm(), "should be in permspace");
737 guarantee(ik->constants()->is_constantPool(), "should be constant pool");
738 guarantee(ik->inner_classes()->is_perm(), "should be in permspace");
739 guarantee(ik->inner_classes()->is_typeArray(), "should be type array");
740 if (ik->protection_domain() != NULL) {
741 guarantee(ik->protection_domain()->is_oop(), "should be oop");
742 }
743 if (ik->host_klass() != NULL) {
744 guarantee(ik->host_klass()->is_oop(), "should be oop");
745 }
746 if (ik->signers() != NULL) {
747 guarantee(ik->signers()->is_objArray(), "should be obj array");
748 }
749 if (ik->class_annotations() != NULL) {
750 guarantee(ik->class_annotations()->is_typeArray(), "should be type array");
751 }
752 if (ik->fields_annotations() != NULL) {
753 guarantee(ik->fields_annotations()->is_objArray(), "should be obj array");
754 }
755 if (ik->methods_annotations() != NULL) {
756 guarantee(ik->methods_annotations()->is_objArray(), "should be obj array");
757 }
758 if (ik->methods_parameter_annotations() != NULL) {
759 guarantee(ik->methods_parameter_annotations()->is_objArray(), "should be obj array");
760 }
761 if (ik->methods_default_annotations() != NULL) {
762 guarantee(ik->methods_default_annotations()->is_objArray(), "should be obj array");
763 }
764 }
765 }
768 bool instanceKlassKlass::oop_partially_loaded(oop obj) const {
769 assert(obj->is_klass(), "object must be klass");
770 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
771 assert(ik->oop_is_instance(), "object must be instanceKlass");
772 return ik->transitive_interfaces() == (objArrayOop) obj; // Check whether transitive_interfaces points to self
773 }
776 // The transitive_interfaces is the last field set when loading an object.
777 void instanceKlassKlass::oop_set_partially_loaded(oop obj) {
778 assert(obj->is_klass(), "object must be klass");
779 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
780 // Set the layout helper to a place-holder value, until fuller initialization.
781 // (This allows asserts in oop_is_instance to succeed.)
782 ik->set_layout_helper(Klass::instance_layout_helper(0, true));
783 assert(ik->oop_is_instance(), "object must be instanceKlass");
784 assert(ik->transitive_interfaces() == NULL, "just checking");
785 ik->set_transitive_interfaces((objArrayOop) obj); // Temporarily set transitive_interfaces to point to self
786 }