1 /*
2 * Copyright 1997-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 # include "incls/_precompiled.incl"
26 # include "incls/_instanceKlassKlass.cpp.incl"
27
28 klassOop instanceKlassKlass::create_klass(TRAPS) {
29 instanceKlassKlass o;
30 KlassHandle h_this_klass(THREAD, Universe::klassKlassObj());
31 KlassHandle k = base_create_klass(h_this_klass, header_size(), o.vtbl_value(), CHECK_NULL);
32 // Make sure size calculation is right
33 assert(k()->size() == align_object_size(header_size()), "wrong size for object");
34 java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror
35 return k();
36 }
37
38 int instanceKlassKlass::oop_size(oop obj) const {
39 assert(obj->is_klass(), "must be klass");
40 return instanceKlass::cast(klassOop(obj))->object_size();
41 }
42
43 bool instanceKlassKlass::oop_is_parsable(oop obj) const {
44 assert(obj->is_klass(), "must be klass");
45 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
46 return (!ik->null_vtbl()) && ik->object_is_parsable();
47 }
48
49 void instanceKlassKlass::iterate_c_heap_oops(instanceKlass* ik,
50 OopClosure* closure) {
51 if (ik->oop_map_cache() != NULL) {
52 ik->oop_map_cache()->oop_iterate(closure);
53 }
54
55 if (ik->jni_ids() != NULL) {
56 ik->jni_ids()->oops_do(closure);
57 }
58 }
59
60 void instanceKlassKlass::oop_follow_contents(oop obj) {
61 assert(obj->is_klass(),"must be a klass");
62 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
63
64 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
65 ik->follow_static_fields();
66 {
67 HandleMark hm;
68 ik->vtable()->oop_follow_contents();
69 ik->itable()->oop_follow_contents();
70 }
71
72 MarkSweep::mark_and_push(ik->adr_array_klasses());
73 MarkSweep::mark_and_push(ik->adr_methods());
74 MarkSweep::mark_and_push(ik->adr_method_ordering());
75 MarkSweep::mark_and_push(ik->adr_local_interfaces());
76 MarkSweep::mark_and_push(ik->adr_transitive_interfaces());
77 MarkSweep::mark_and_push(ik->adr_fields());
78 MarkSweep::mark_and_push(ik->adr_constants());
79 MarkSweep::mark_and_push(ik->adr_class_loader());
80 MarkSweep::mark_and_push(ik->adr_source_file_name());
81 MarkSweep::mark_and_push(ik->adr_source_debug_extension());
82 MarkSweep::mark_and_push(ik->adr_inner_classes());
83 MarkSweep::mark_and_push(ik->adr_protection_domain());
84 MarkSweep::mark_and_push(ik->adr_signers());
85 MarkSweep::mark_and_push(ik->adr_generic_signature());
86 MarkSweep::mark_and_push(ik->adr_class_annotations());
87 MarkSweep::mark_and_push(ik->adr_fields_annotations());
88 MarkSweep::mark_and_push(ik->adr_methods_annotations());
89 MarkSweep::mark_and_push(ik->adr_methods_parameter_annotations());
90 MarkSweep::mark_and_push(ik->adr_methods_default_annotations());
91
92 // We do not follow adr_implementors() here. It is followed later
93 // in instanceKlass::follow_weak_klass_links()
94
95 klassKlass::oop_follow_contents(obj);
96
97 iterate_c_heap_oops(ik, &MarkSweep::mark_and_push_closure);
98 }
99
100 #ifndef SERIALGC
101 void instanceKlassKlass::oop_follow_contents(ParCompactionManager* cm,
102 oop obj) {
103 assert(obj->is_klass(),"must be a klass");
104 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
105
106 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
107 ik->follow_static_fields(cm);
108 ik->vtable()->oop_follow_contents(cm);
109 ik->itable()->oop_follow_contents(cm);
110
111 PSParallelCompact::mark_and_push(cm, ik->adr_array_klasses());
112 PSParallelCompact::mark_and_push(cm, ik->adr_methods());
113 PSParallelCompact::mark_and_push(cm, ik->adr_method_ordering());
114 PSParallelCompact::mark_and_push(cm, ik->adr_local_interfaces());
115 PSParallelCompact::mark_and_push(cm, ik->adr_transitive_interfaces());
116 PSParallelCompact::mark_and_push(cm, ik->adr_fields());
117 PSParallelCompact::mark_and_push(cm, ik->adr_constants());
118 PSParallelCompact::mark_and_push(cm, ik->adr_class_loader());
119 PSParallelCompact::mark_and_push(cm, ik->adr_source_file_name());
120 PSParallelCompact::mark_and_push(cm, ik->adr_source_debug_extension());
121 PSParallelCompact::mark_and_push(cm, ik->adr_inner_classes());
122 PSParallelCompact::mark_and_push(cm, ik->adr_protection_domain());
123 PSParallelCompact::mark_and_push(cm, ik->adr_signers());
124 PSParallelCompact::mark_and_push(cm, ik->adr_generic_signature());
125 PSParallelCompact::mark_and_push(cm, ik->adr_class_annotations());
126 PSParallelCompact::mark_and_push(cm, ik->adr_fields_annotations());
127 PSParallelCompact::mark_and_push(cm, ik->adr_methods_annotations());
128 PSParallelCompact::mark_and_push(cm, ik->adr_methods_parameter_annotations());
129 PSParallelCompact::mark_and_push(cm, ik->adr_methods_default_annotations());
130
131 // We do not follow adr_implementor() here. It is followed later
132 // in instanceKlass::follow_weak_klass_links()
133
134 klassKlass::oop_follow_contents(cm, obj);
135
136 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
137 iterate_c_heap_oops(ik, &mark_and_push_closure);
138 }
139 #endif // SERIALGC
140
141 int instanceKlassKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
142 assert(obj->is_klass(),"must be a klass");
143 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
144 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
145 // Get size before changing pointers.
146 // Don't call size() or oop_size() since that is a virtual call.
147 int size = ik->object_size();
148
149 ik->iterate_static_fields(blk);
150 ik->vtable()->oop_oop_iterate(blk);
151 ik->itable()->oop_oop_iterate(blk);
152
153 blk->do_oop(ik->adr_array_klasses());
154 blk->do_oop(ik->adr_methods());
155 blk->do_oop(ik->adr_method_ordering());
156 blk->do_oop(ik->adr_local_interfaces());
157 blk->do_oop(ik->adr_transitive_interfaces());
158 blk->do_oop(ik->adr_fields());
159 blk->do_oop(ik->adr_constants());
160 blk->do_oop(ik->adr_class_loader());
161 blk->do_oop(ik->adr_protection_domain());
162 blk->do_oop(ik->adr_signers());
163 blk->do_oop(ik->adr_source_file_name());
164 blk->do_oop(ik->adr_source_debug_extension());
165 blk->do_oop(ik->adr_inner_classes());
166 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
167 blk->do_oop(&ik->adr_implementors()[i]);
168 }
169 blk->do_oop(ik->adr_generic_signature());
170 blk->do_oop(ik->adr_class_annotations());
171 blk->do_oop(ik->adr_fields_annotations());
172 blk->do_oop(ik->adr_methods_annotations());
173 blk->do_oop(ik->adr_methods_parameter_annotations());
174 blk->do_oop(ik->adr_methods_default_annotations());
175
176 klassKlass::oop_oop_iterate(obj, blk);
177
178 if(ik->oop_map_cache() != NULL) ik->oop_map_cache()->oop_iterate(blk);
179 return size;
180 }
181
182 int instanceKlassKlass::oop_oop_iterate_m(oop obj, OopClosure* blk,
183 MemRegion mr) {
184 assert(obj->is_klass(),"must be a klass");
185 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
186 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
187 // Get size before changing pointers.
188 // Don't call size() or oop_size() since that is a virtual call.
189 int size = ik->object_size();
190
191 ik->iterate_static_fields(blk, mr);
192 ik->vtable()->oop_oop_iterate_m(blk, mr);
193 ik->itable()->oop_oop_iterate_m(blk, mr);
194
195 oop* adr;
196 adr = ik->adr_array_klasses();
197 if (mr.contains(adr)) blk->do_oop(adr);
198 adr = ik->adr_methods();
199 if (mr.contains(adr)) blk->do_oop(adr);
200 adr = ik->adr_method_ordering();
201 if (mr.contains(adr)) blk->do_oop(adr);
202 adr = ik->adr_local_interfaces();
203 if (mr.contains(adr)) blk->do_oop(adr);
204 adr = ik->adr_transitive_interfaces();
205 if (mr.contains(adr)) blk->do_oop(adr);
206 adr = ik->adr_fields();
207 if (mr.contains(adr)) blk->do_oop(adr);
208 adr = ik->adr_constants();
209 if (mr.contains(adr)) blk->do_oop(adr);
210 adr = ik->adr_class_loader();
211 if (mr.contains(adr)) blk->do_oop(adr);
212 adr = ik->adr_protection_domain();
213 if (mr.contains(adr)) blk->do_oop(adr);
214 adr = ik->adr_signers();
215 if (mr.contains(adr)) blk->do_oop(adr);
216 adr = ik->adr_source_file_name();
217 if (mr.contains(adr)) blk->do_oop(adr);
218 adr = ik->adr_source_debug_extension();
219 if (mr.contains(adr)) blk->do_oop(adr);
220 adr = ik->adr_inner_classes();
221 if (mr.contains(adr)) blk->do_oop(adr);
222 adr = ik->adr_implementors();
223 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
224 if (mr.contains(&adr[i])) blk->do_oop(&adr[i]);
225 }
226 adr = ik->adr_generic_signature();
227 if (mr.contains(adr)) blk->do_oop(adr);
228 adr = ik->adr_class_annotations();
229 if (mr.contains(adr)) blk->do_oop(adr);
230 adr = ik->adr_fields_annotations();
231 if (mr.contains(adr)) blk->do_oop(adr);
232 adr = ik->adr_methods_annotations();
233 if (mr.contains(adr)) blk->do_oop(adr);
234 adr = ik->adr_methods_parameter_annotations();
235 if (mr.contains(adr)) blk->do_oop(adr);
236 adr = ik->adr_methods_default_annotations();
237 if (mr.contains(adr)) blk->do_oop(adr);
238
239 klassKlass::oop_oop_iterate_m(obj, blk, mr);
240
241 if(ik->oop_map_cache() != NULL) ik->oop_map_cache()->oop_iterate(blk, mr);
242 return size;
243 }
244
245 int instanceKlassKlass::oop_adjust_pointers(oop obj) {
246 assert(obj->is_klass(),"must be a klass");
247 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
248
249 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
250 ik->adjust_static_fields();
251 ik->vtable()->oop_adjust_pointers();
252 ik->itable()->oop_adjust_pointers();
253
254 MarkSweep::adjust_pointer(ik->adr_array_klasses());
255 MarkSweep::adjust_pointer(ik->adr_methods());
256 MarkSweep::adjust_pointer(ik->adr_method_ordering());
257 MarkSweep::adjust_pointer(ik->adr_local_interfaces());
258 MarkSweep::adjust_pointer(ik->adr_transitive_interfaces());
259 MarkSweep::adjust_pointer(ik->adr_fields());
260 MarkSweep::adjust_pointer(ik->adr_constants());
261 MarkSweep::adjust_pointer(ik->adr_class_loader());
262 MarkSweep::adjust_pointer(ik->adr_protection_domain());
263 MarkSweep::adjust_pointer(ik->adr_signers());
264 MarkSweep::adjust_pointer(ik->adr_source_file_name());
265 MarkSweep::adjust_pointer(ik->adr_source_debug_extension());
266 MarkSweep::adjust_pointer(ik->adr_inner_classes());
267 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
268 MarkSweep::adjust_pointer(&ik->adr_implementors()[i]);
269 }
270 MarkSweep::adjust_pointer(ik->adr_generic_signature());
271 MarkSweep::adjust_pointer(ik->adr_class_annotations());
272 MarkSweep::adjust_pointer(ik->adr_fields_annotations());
273 MarkSweep::adjust_pointer(ik->adr_methods_annotations());
274 MarkSweep::adjust_pointer(ik->adr_methods_parameter_annotations());
275 MarkSweep::adjust_pointer(ik->adr_methods_default_annotations());
276
277 iterate_c_heap_oops(ik, &MarkSweep::adjust_root_pointer_closure);
278
279 return klassKlass::oop_adjust_pointers(obj);
280 }
281
282 #ifndef SERIALGC
283 void instanceKlassKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) {
284 assert(!pm->depth_first(), "invariant");
285 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
286 ik->copy_static_fields(pm);
287
288 oop* loader_addr = ik->adr_class_loader();
289 if (PSScavenge::should_scavenge(loader_addr)) {
290 pm->claim_or_forward_breadth(loader_addr);
291 }
292
293 oop* pd_addr = ik->adr_protection_domain();
294 if (PSScavenge::should_scavenge(pd_addr)) {
295 pm->claim_or_forward_breadth(pd_addr);
296 }
297
298 oop* sg_addr = ik->adr_signers();
299 if (PSScavenge::should_scavenge(sg_addr)) {
300 pm->claim_or_forward_breadth(sg_addr);
301 }
302
303 klassKlass::oop_copy_contents(pm, obj);
304 }
305
306 void instanceKlassKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
307 assert(pm->depth_first(), "invariant");
308 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
309 ik->push_static_fields(pm);
310
311 oop* loader_addr = ik->adr_class_loader();
312 if (PSScavenge::should_scavenge(loader_addr)) {
313 pm->claim_or_forward_depth(loader_addr);
314 }
315
316 oop* pd_addr = ik->adr_protection_domain();
317 if (PSScavenge::should_scavenge(pd_addr)) {
318 pm->claim_or_forward_depth(pd_addr);
319 }
320
321 oop* sg_addr = ik->adr_signers();
322 if (PSScavenge::should_scavenge(sg_addr)) {
323 pm->claim_or_forward_depth(sg_addr);
324 }
325
326 klassKlass::oop_copy_contents(pm, obj);
327 }
328
329 int instanceKlassKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
330 assert(obj->is_klass(),"must be a klass");
331 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(),
332 "must be instance klass");
333
334 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
335 ik->update_static_fields();
336 ik->vtable()->oop_update_pointers(cm);
337 ik->itable()->oop_update_pointers(cm);
338
339 oop* const beg_oop = ik->oop_block_beg();
340 oop* const end_oop = ik->oop_block_end();
341 for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) {
342 PSParallelCompact::adjust_pointer(cur_oop);
343 }
344
345 OopClosure* closure = PSParallelCompact::adjust_root_pointer_closure();
346 iterate_c_heap_oops(ik, closure);
347
348 klassKlass::oop_update_pointers(cm, obj);
349 return ik->object_size();
350 }
351
352 int instanceKlassKlass::oop_update_pointers(ParCompactionManager* cm, oop obj,
353 HeapWord* beg_addr,
354 HeapWord* end_addr) {
355 assert(obj->is_klass(),"must be a klass");
356 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(),
357 "must be instance klass");
358
359 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
360 ik->update_static_fields(beg_addr, end_addr);
361 ik->vtable()->oop_update_pointers(cm, beg_addr, end_addr);
362 ik->itable()->oop_update_pointers(cm, beg_addr, end_addr);
363
364 oop* const beg_oop = MAX2((oop*)beg_addr, ik->oop_block_beg());
365 oop* const end_oop = MIN2((oop*)end_addr, ik->oop_block_end());
366 for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) {
367 PSParallelCompact::adjust_pointer(cur_oop);
368 }
369
370 // The oop_map_cache, jni_ids and jni_id_map are allocated from the C heap,
371 // and so don't lie within any 'Chunk' boundaries. Update them when the
372 // lowest addressed oop in the instanceKlass 'oop_block' is updated.
373 if (beg_oop == ik->oop_block_beg()) {
374 OopClosure* closure = PSParallelCompact::adjust_root_pointer_closure();
375 iterate_c_heap_oops(ik, closure);
376 }
377
378 klassKlass::oop_update_pointers(cm, obj, beg_addr, end_addr);
379 return ik->object_size();
380 }
381 #endif // SERIALGC
382
383 klassOop instanceKlassKlass::allocate_instance_klass(int vtable_len, int itable_len, int static_field_size,
384 int nonstatic_oop_map_size, ReferenceType rt, TRAPS) {
385
386 int size = instanceKlass::object_size(align_object_offset(vtable_len) + align_object_offset(itable_len) + static_field_size + nonstatic_oop_map_size);
387
388 // Allocation
389 KlassHandle h_this_klass(THREAD, as_klassOop());
390 KlassHandle k;
391 if (rt == REF_NONE) {
392 // regular klass
393 instanceKlass o;
394 k = base_create_klass(h_this_klass, size, o.vtbl_value(), CHECK_NULL);
395 } else {
396 // reference klass
397 instanceRefKlass o;
398 k = base_create_klass(h_this_klass, size, o.vtbl_value(), CHECK_NULL);
399 }
400 {
401 No_Safepoint_Verifier no_safepoint; // until k becomes parsable
402 instanceKlass* ik = (instanceKlass*) k()->klass_part();
403 assert(!k()->is_parsable(), "not expecting parsability yet.");
404
405 // The sizes of these these three variables are used for determining the
406 // size of the instanceKlassOop. It is critical that these are set to the right
407 // sizes before the first GC, i.e., when we allocate the mirror.
408 ik->set_vtable_length(vtable_len);
409 ik->set_itable_length(itable_len);
410 ik->set_static_field_size(static_field_size);
411 ik->set_nonstatic_oop_map_size(nonstatic_oop_map_size);
412 assert(k()->size() == size, "wrong size for object");
413
414 ik->set_array_klasses(NULL);
415 ik->set_methods(NULL);
416 ik->set_method_ordering(NULL);
417 ik->set_local_interfaces(NULL);
418 ik->set_transitive_interfaces(NULL);
419 ik->init_implementor();
420 ik->set_fields(NULL);
421 ik->set_constants(NULL);
422 ik->set_class_loader(NULL);
423 ik->set_protection_domain(NULL);
424 ik->set_signers(NULL);
425 ik->set_source_file_name(NULL);
426 ik->set_source_debug_extension(NULL);
427 ik->set_inner_classes(NULL);
428 ik->set_static_oop_field_size(0);
429 ik->set_nonstatic_field_size(0);
430 ik->set_is_marked_dependent(false);
431 ik->set_init_state(instanceKlass::allocated);
432 ik->set_init_thread(NULL);
433 ik->set_reference_type(rt);
434 ik->set_oop_map_cache(NULL);
435 ik->set_jni_ids(NULL);
436 ik->set_osr_nmethods_head(NULL);
437 ik->set_breakpoints(NULL);
438 ik->init_previous_versions();
439 ik->set_generic_signature(NULL);
440 ik->release_set_methods_jmethod_ids(NULL);
441 ik->release_set_methods_cached_itable_indices(NULL);
442 ik->set_class_annotations(NULL);
443 ik->set_fields_annotations(NULL);
444 ik->set_methods_annotations(NULL);
445 ik->set_methods_parameter_annotations(NULL);
446 ik->set_methods_default_annotations(NULL);
447 ik->set_enclosing_method_indices(0, 0);
448 ik->set_jvmti_cached_class_field_map(NULL);
449 ik->set_initial_method_idnum(0);
450 assert(k()->is_parsable(), "should be parsable here.");
451
452 // initialize the non-header words to zero
453 intptr_t* p = (intptr_t*)k();
454 for (int index = instanceKlass::header_size(); index < size; index++) {
455 p[index] = NULL_WORD;
456 }
457
458 // To get verify to work - must be set to partial loaded before first GC point.
459 k()->set_partially_loaded();
460 }
461
462 // GC can happen here
463 java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror
464 return k();
465 }
466
467
468
469 #ifndef PRODUCT
470
471 // Printing
472
473 static const char* state_names[] = {
474 "unparseable_by_gc", "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error"
475 };
476
477
478 void instanceKlassKlass::oop_print_on(oop obj, outputStream* st) {
479 assert(obj->is_klass(), "must be klass");
480 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
481 klassKlass::oop_print_on(obj, st);
482
483 st->print(" - instance size: %d", ik->size_helper()); st->cr();
484 st->print(" - klass size: %d", ik->object_size()); st->cr();
485 st->print(" - access: "); ik->access_flags().print_on(st); st->cr();
486 st->print(" - state: "); st->print_cr(state_names[ik->_init_state]);
487 st->print(" - name: "); ik->name()->print_value_on(st); st->cr();
488 st->print(" - super: "); ik->super()->print_value_on(st); st->cr();
489 st->print(" - sub: ");
490 Klass* sub = ik->subklass();
491 int n;
492 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) {
493 if (n < MaxSubklassPrintSize) {
494 sub->as_klassOop()->print_value_on(st);
495 st->print(" ");
496 }
497 }
498 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize);
499 st->cr();
500
501 if (ik->is_interface()) {
502 st->print_cr(" - nof implementors: %d", ik->nof_implementors());
503 int print_impl = 0;
504 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
505 if (ik->implementor(i) != NULL) {
506 if (++print_impl == 1)
507 st->print_cr(" - implementor: ");
508 st->print(" ");
509 ik->implementor(i)->print_value_on(st);
510 }
511 }
512 if (print_impl > 0) st->cr();
513 }
514
515 st->print(" - arrays: "); ik->array_klasses()->print_value_on(st); st->cr();
516 st->print(" - methods: "); ik->methods()->print_value_on(st); st->cr();
517 if (Verbose) {
518 objArrayOop methods = ik->methods();
519 for(int i = 0; i < methods->length(); i++) {
520 tty->print("%d : ", i); methods->obj_at(i)->print_value(); tty->cr();
521 }
522 }
523 st->print(" - method ordering: "); ik->method_ordering()->print_value_on(st); st->cr();
524 st->print(" - local interfaces: "); ik->local_interfaces()->print_value_on(st); st->cr();
525 st->print(" - trans. interfaces: "); ik->transitive_interfaces()->print_value_on(st); st->cr();
526 st->print(" - constants: "); ik->constants()->print_value_on(st); st->cr();
527 st->print(" - class loader: "); ik->class_loader()->print_value_on(st); st->cr();
528 st->print(" - protection domain: "); ik->protection_domain()->print_value_on(st); st->cr();
529 st->print(" - signers: "); ik->signers()->print_value_on(st); st->cr();
530 if (ik->source_file_name() != NULL) {
531 st->print(" - source file: ");
532 ik->source_file_name()->print_value_on(st);
533 st->cr();
534 }
535 if (ik->source_debug_extension() != NULL) {
536 st->print(" - source debug extension: ");
537 ik->source_debug_extension()->print_value_on(st);
538 st->cr();
539 }
540
541 st->print_cr(" - previous version: ");
542 {
543 ResourceMark rm;
544 // PreviousVersionInfo objects returned via PreviousVersionWalker
545 // contain a GrowableArray of handles. We have to clean up the
546 // GrowableArray _after_ the PreviousVersionWalker destructor
547 // has destroyed the handles.
548 {
549 PreviousVersionWalker pvw(ik);
550 for (PreviousVersionInfo * pv_info = pvw.next_previous_version();
551 pv_info != NULL; pv_info = pvw.next_previous_version()) {
552 pv_info->prev_constant_pool_handle()()->print_value_on(st);
553 }
554 st->cr();
555 } // pvw is cleaned up
556 } // rm is cleaned up
557
558 if (ik->generic_signature() != NULL) {
559 st->print(" - generic signature: ");
560 ik->generic_signature()->print_value_on(st);
561 }
562 st->print(" - inner classes: "); ik->inner_classes()->print_value_on(st); st->cr();
563 st->print(" - java mirror: "); ik->java_mirror()->print_value_on(st); st->cr();
564 st->print(" - vtable length %d (start addr: " INTPTR_FORMAT ")", ik->vtable_length(), ik->start_of_vtable()); st->cr();
565 st->print(" - itable length %d (start addr: " INTPTR_FORMAT ")", ik->itable_length(), ik->start_of_itable()); st->cr();
566 st->print_cr(" - static fields:");
567 FieldPrinter print_static_field(st);
568 ik->do_local_static_fields(&print_static_field);
569 st->print_cr(" - non-static fields:");
570 FieldPrinter print_nonstatic_field(st, obj);
571 ik->do_nonstatic_fields(&print_nonstatic_field);
572
573 st->print(" - static oop maps: ");
574 if (ik->static_oop_field_size() > 0) {
575 int first_offset = ik->offset_of_static_fields();
576 st->print("%d-%d", first_offset, first_offset + ik->static_oop_field_size() - 1);
577 }
578 st->cr();
579
580 st->print(" - non-static oop maps: ");
581 OopMapBlock* map = ik->start_of_nonstatic_oop_maps();
582 OopMapBlock* end_map = map + ik->nonstatic_oop_map_size();
583 while (map < end_map) {
584 st->print("%d-%d ", map->offset(), map->offset() + oopSize*(map->length() - 1));
585 map++;
586 }
587 st->cr();
588 }
589
590
591 void instanceKlassKlass::oop_print_value_on(oop obj, outputStream* st) {
592 assert(obj->is_klass(), "must be klass");
593 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
594 ik->name()->print_value_on(st);
595 }
596
597 #endif // PRODUCT
598
599 const char* instanceKlassKlass::internal_name() const {
600 return "{instance class}";
601 }
602
603 // Verification
604
605 class VerifyFieldClosure: public OopClosure {
606 protected:
607 template <class T> void do_oop_work(T* p) {
608 guarantee(Universe::heap()->is_in(p), "should be in heap");
609 oop obj = oopDesc::load_decode_heap_oop(p);
610 guarantee(obj->is_oop_or_null(), "should be in heap");
611 }
612 public:
613 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); }
614 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); }
615 };
616
617 void instanceKlassKlass::oop_verify_on(oop obj, outputStream* st) {
618 klassKlass::oop_verify_on(obj, st);
619 if (!obj->partially_loaded()) {
620 Thread *thread = Thread::current();
621 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
622
623 #ifndef PRODUCT
624 // Avoid redundant verifies
625 if (ik->_verify_count == Universe::verify_count()) return;
626 ik->_verify_count = Universe::verify_count();
627 #endif
628 // Verify that klass is present in SystemDictionary
629 if (ik->is_loaded()) {
630 symbolHandle h_name (thread, ik->name());
631 Handle h_loader (thread, ik->class_loader());
632 Handle h_obj(thread, obj);
633 SystemDictionary::verify_obj_klass_present(h_obj, h_name, h_loader);
634 }
635
636 // Verify static fields
637 VerifyFieldClosure blk;
638 ik->iterate_static_fields(&blk);
639
640 // Verify vtables
641 if (ik->is_linked()) {
642 ResourceMark rm(thread);
643 // $$$ This used to be done only for m/s collections. Doing it
644 // always seemed a valid generalization. (DLD -- 6/00)
645 ik->vtable()->verify(st);
646 }
647
648 // Verify oop map cache
649 if (ik->oop_map_cache() != NULL) {
650 ik->oop_map_cache()->verify();
651 }
652
653 // Verify first subklass
654 if (ik->subklass_oop() != NULL) {
655 guarantee(ik->subklass_oop()->is_perm(), "should be in permspace");
656 guarantee(ik->subklass_oop()->is_klass(), "should be klass");
657 }
658
659 // Verify siblings
660 klassOop super = ik->super();
661 Klass* sib = ik->next_sibling();
662 int sib_count = 0;
663 while (sib != NULL) {
664 if (sib == ik) {
665 fatal1("subclass cycle of length %d", sib_count);
666 }
667 if (sib_count >= 100000) {
668 fatal1("suspiciously long subclass list %d", sib_count);
669 }
670 guarantee(sib->as_klassOop()->is_klass(), "should be klass");
671 guarantee(sib->as_klassOop()->is_perm(), "should be in permspace");
672 guarantee(sib->super() == super, "siblings should have same superklass");
673 sib = sib->next_sibling();
674 }
675
676 // Verify implementor fields
677 bool saw_null_impl = false;
678 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
679 klassOop im = ik->implementor(i);
680 if (im == NULL) { saw_null_impl = true; continue; }
681 guarantee(!saw_null_impl, "non-nulls must preceded all nulls");
682 guarantee(ik->is_interface(), "only interfaces should have implementor set");
683 guarantee(i < ik->nof_implementors(), "should only have one implementor");
684 guarantee(im->is_perm(), "should be in permspace");
685 guarantee(im->is_klass(), "should be klass");
686 guarantee(!Klass::cast(klassOop(im))->is_interface(), "implementors cannot be interfaces");
687 }
688
689 // Verify local interfaces
690 objArrayOop local_interfaces = ik->local_interfaces();
691 guarantee(local_interfaces->is_perm(), "should be in permspace");
692 guarantee(local_interfaces->is_objArray(), "should be obj array");
693 int j;
694 for (j = 0; j < local_interfaces->length(); j++) {
695 oop e = local_interfaces->obj_at(j);
696 guarantee(e->is_klass() && Klass::cast(klassOop(e))->is_interface(), "invalid local interface");
697 }
698
699 // Verify transitive interfaces
700 objArrayOop transitive_interfaces = ik->transitive_interfaces();
701 guarantee(transitive_interfaces->is_perm(), "should be in permspace");
702 guarantee(transitive_interfaces->is_objArray(), "should be obj array");
703 for (j = 0; j < transitive_interfaces->length(); j++) {
704 oop e = transitive_interfaces->obj_at(j);
705 guarantee(e->is_klass() && Klass::cast(klassOop(e))->is_interface(), "invalid transitive interface");
706 }
707
708 // Verify methods
709 objArrayOop methods = ik->methods();
710 guarantee(methods->is_perm(), "should be in permspace");
711 guarantee(methods->is_objArray(), "should be obj array");
712 for (j = 0; j < methods->length(); j++) {
713 guarantee(methods->obj_at(j)->is_method(), "non-method in methods array");
714 }
715 for (j = 0; j < methods->length() - 1; j++) {
716 methodOop m1 = methodOop(methods->obj_at(j));
717 methodOop m2 = methodOop(methods->obj_at(j + 1));
718 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly");
719 }
720
721 // Verify method ordering
722 typeArrayOop method_ordering = ik->method_ordering();
723 guarantee(method_ordering->is_perm(), "should be in permspace");
724 guarantee(method_ordering->is_typeArray(), "should be type array");
725 int length = method_ordering->length();
726 if (JvmtiExport::can_maintain_original_method_order()) {
727 guarantee(length == methods->length(), "invalid method ordering length");
728 jlong sum = 0;
729 for (j = 0; j < length; j++) {
730 int original_index = method_ordering->int_at(j);
731 guarantee(original_index >= 0 && original_index < length, "invalid method ordering index");
732 sum += original_index;
733 }
734 // Verify sum of indices 0,1,...,length-1
735 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum");
736 } else {
737 guarantee(length == 0, "invalid method ordering length");
738 }
739
740 // Verify JNI static field identifiers
741 if (ik->jni_ids() != NULL) {
742 ik->jni_ids()->verify(ik->as_klassOop());
743 }
744
745 // Verify other fields
746 if (ik->array_klasses() != NULL) {
747 guarantee(ik->array_klasses()->is_perm(), "should be in permspace");
748 guarantee(ik->array_klasses()->is_klass(), "should be klass");
749 }
750 guarantee(ik->fields()->is_perm(), "should be in permspace");
751 guarantee(ik->fields()->is_typeArray(), "should be type array");
752 guarantee(ik->constants()->is_perm(), "should be in permspace");
753 guarantee(ik->constants()->is_constantPool(), "should be constant pool");
754 guarantee(ik->inner_classes()->is_perm(), "should be in permspace");
755 guarantee(ik->inner_classes()->is_typeArray(), "should be type array");
756 if (ik->source_file_name() != NULL) {
757 guarantee(ik->source_file_name()->is_perm(), "should be in permspace");
758 guarantee(ik->source_file_name()->is_symbol(), "should be symbol");
759 }
760 if (ik->source_debug_extension() != NULL) {
761 guarantee(ik->source_debug_extension()->is_perm(), "should be in permspace");
762 guarantee(ik->source_debug_extension()->is_symbol(), "should be symbol");
763 }
764 if (ik->protection_domain() != NULL) {
765 guarantee(ik->protection_domain()->is_oop(), "should be oop");
766 }
767 if (ik->signers() != NULL) {
768 guarantee(ik->signers()->is_objArray(), "should be obj array");
769 }
770 if (ik->generic_signature() != NULL) {
771 guarantee(ik->generic_signature()->is_perm(), "should be in permspace");
772 guarantee(ik->generic_signature()->is_symbol(), "should be symbol");
773 }
774 if (ik->class_annotations() != NULL) {
775 guarantee(ik->class_annotations()->is_typeArray(), "should be type array");
776 }
777 if (ik->fields_annotations() != NULL) {
778 guarantee(ik->fields_annotations()->is_objArray(), "should be obj array");
779 }
780 if (ik->methods_annotations() != NULL) {
781 guarantee(ik->methods_annotations()->is_objArray(), "should be obj array");
782 }
783 if (ik->methods_parameter_annotations() != NULL) {
784 guarantee(ik->methods_parameter_annotations()->is_objArray(), "should be obj array");
785 }
786 if (ik->methods_default_annotations() != NULL) {
787 guarantee(ik->methods_default_annotations()->is_objArray(), "should be obj array");
788 }
789 }
790 }
791
792
793 bool instanceKlassKlass::oop_partially_loaded(oop obj) const {
794 assert(obj->is_klass(), "object must be klass");
795 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
796 assert(ik->oop_is_instance(), "object must be instanceKlass");
797 return ik->transitive_interfaces() == (objArrayOop) obj; // Check whether transitive_interfaces points to self
798 }
799
800
801 // The transitive_interfaces is the last field set when loading an object.
802 void instanceKlassKlass::oop_set_partially_loaded(oop obj) {
803 assert(obj->is_klass(), "object must be klass");
804 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
805 // Set the layout helper to a place-holder value, until fuller initialization.
806 // (This allows asserts in oop_is_instance to succeed.)
807 ik->set_layout_helper(Klass::instance_layout_helper(0, true));
808 assert(ik->oop_is_instance(), "object must be instanceKlass");
809 assert(ik->transitive_interfaces() == NULL, "just checking");
810 ik->set_transitive_interfaces((objArrayOop) obj); // Temporarily set transitive_interfaces to point to self
811 }