Fri, 20 Mar 2009 23:19:36 -0700
6814659: separable cleanups and subroutines for 6655638
Summary: preparatory but separable changes for method handles
Reviewed-by: kvn, never
1 /*
2 * Copyright 1997-2009 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 */
25 # include "incls/_precompiled.incl"
26 # include "incls/_instanceKlassKlass.cpp.incl"
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 }
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 }
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 }
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 }
55 if (ik->jni_ids() != NULL) {
56 ik->jni_ids()->oops_do(closure);
57 }
58 }
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");
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 }
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_host_klass());
85 MarkSweep::mark_and_push(ik->adr_signers());
86 MarkSweep::mark_and_push(ik->adr_generic_signature());
87 MarkSweep::mark_and_push(ik->adr_class_annotations());
88 MarkSweep::mark_and_push(ik->adr_fields_annotations());
89 MarkSweep::mark_and_push(ik->adr_methods_annotations());
90 MarkSweep::mark_and_push(ik->adr_methods_parameter_annotations());
91 MarkSweep::mark_and_push(ik->adr_methods_default_annotations());
93 // We do not follow adr_implementors() here. It is followed later
94 // in instanceKlass::follow_weak_klass_links()
96 klassKlass::oop_follow_contents(obj);
98 iterate_c_heap_oops(ik, &MarkSweep::mark_and_push_closure);
99 }
101 #ifndef SERIALGC
102 void instanceKlassKlass::oop_follow_contents(ParCompactionManager* cm,
103 oop obj) {
104 assert(obj->is_klass(),"must be a klass");
105 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
107 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
108 ik->follow_static_fields(cm);
109 ik->vtable()->oop_follow_contents(cm);
110 ik->itable()->oop_follow_contents(cm);
112 PSParallelCompact::mark_and_push(cm, ik->adr_array_klasses());
113 PSParallelCompact::mark_and_push(cm, ik->adr_methods());
114 PSParallelCompact::mark_and_push(cm, ik->adr_method_ordering());
115 PSParallelCompact::mark_and_push(cm, ik->adr_local_interfaces());
116 PSParallelCompact::mark_and_push(cm, ik->adr_transitive_interfaces());
117 PSParallelCompact::mark_and_push(cm, ik->adr_fields());
118 PSParallelCompact::mark_and_push(cm, ik->adr_constants());
119 PSParallelCompact::mark_and_push(cm, ik->adr_class_loader());
120 PSParallelCompact::mark_and_push(cm, ik->adr_source_file_name());
121 PSParallelCompact::mark_and_push(cm, ik->adr_source_debug_extension());
122 PSParallelCompact::mark_and_push(cm, ik->adr_inner_classes());
123 PSParallelCompact::mark_and_push(cm, ik->adr_protection_domain());
124 PSParallelCompact::mark_and_push(cm, ik->adr_host_klass());
125 PSParallelCompact::mark_and_push(cm, ik->adr_signers());
126 PSParallelCompact::mark_and_push(cm, ik->adr_generic_signature());
127 PSParallelCompact::mark_and_push(cm, ik->adr_class_annotations());
128 PSParallelCompact::mark_and_push(cm, ik->adr_fields_annotations());
129 PSParallelCompact::mark_and_push(cm, ik->adr_methods_annotations());
130 PSParallelCompact::mark_and_push(cm, ik->adr_methods_parameter_annotations());
131 PSParallelCompact::mark_and_push(cm, ik->adr_methods_default_annotations());
133 // We do not follow adr_implementor() here. It is followed later
134 // in instanceKlass::follow_weak_klass_links()
136 klassKlass::oop_follow_contents(cm, obj);
138 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
139 iterate_c_heap_oops(ik, &mark_and_push_closure);
140 }
141 #endif // SERIALGC
143 int instanceKlassKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
144 assert(obj->is_klass(),"must be a klass");
145 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
146 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
147 // Get size before changing pointers.
148 // Don't call size() or oop_size() since that is a virtual call.
149 int size = ik->object_size();
151 ik->iterate_static_fields(blk);
152 ik->vtable()->oop_oop_iterate(blk);
153 ik->itable()->oop_oop_iterate(blk);
155 blk->do_oop(ik->adr_array_klasses());
156 blk->do_oop(ik->adr_methods());
157 blk->do_oop(ik->adr_method_ordering());
158 blk->do_oop(ik->adr_local_interfaces());
159 blk->do_oop(ik->adr_transitive_interfaces());
160 blk->do_oop(ik->adr_fields());
161 blk->do_oop(ik->adr_constants());
162 blk->do_oop(ik->adr_class_loader());
163 blk->do_oop(ik->adr_protection_domain());
164 blk->do_oop(ik->adr_host_klass());
165 blk->do_oop(ik->adr_signers());
166 blk->do_oop(ik->adr_source_file_name());
167 blk->do_oop(ik->adr_source_debug_extension());
168 blk->do_oop(ik->adr_inner_classes());
169 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
170 blk->do_oop(&ik->adr_implementors()[i]);
171 }
172 blk->do_oop(ik->adr_generic_signature());
173 blk->do_oop(ik->adr_class_annotations());
174 blk->do_oop(ik->adr_fields_annotations());
175 blk->do_oop(ik->adr_methods_annotations());
176 blk->do_oop(ik->adr_methods_parameter_annotations());
177 blk->do_oop(ik->adr_methods_default_annotations());
179 klassKlass::oop_oop_iterate(obj, blk);
181 if(ik->oop_map_cache() != NULL) ik->oop_map_cache()->oop_iterate(blk);
182 return size;
183 }
185 int instanceKlassKlass::oop_oop_iterate_m(oop obj, OopClosure* blk,
186 MemRegion mr) {
187 assert(obj->is_klass(),"must be a klass");
188 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
189 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
190 // Get size before changing pointers.
191 // Don't call size() or oop_size() since that is a virtual call.
192 int size = ik->object_size();
194 ik->iterate_static_fields(blk, mr);
195 ik->vtable()->oop_oop_iterate_m(blk, mr);
196 ik->itable()->oop_oop_iterate_m(blk, mr);
198 oop* adr;
199 adr = ik->adr_array_klasses();
200 if (mr.contains(adr)) blk->do_oop(adr);
201 adr = ik->adr_methods();
202 if (mr.contains(adr)) blk->do_oop(adr);
203 adr = ik->adr_method_ordering();
204 if (mr.contains(adr)) blk->do_oop(adr);
205 adr = ik->adr_local_interfaces();
206 if (mr.contains(adr)) blk->do_oop(adr);
207 adr = ik->adr_transitive_interfaces();
208 if (mr.contains(adr)) blk->do_oop(adr);
209 adr = ik->adr_fields();
210 if (mr.contains(adr)) blk->do_oop(adr);
211 adr = ik->adr_constants();
212 if (mr.contains(adr)) blk->do_oop(adr);
213 adr = ik->adr_class_loader();
214 if (mr.contains(adr)) blk->do_oop(adr);
215 adr = ik->adr_protection_domain();
216 if (mr.contains(adr)) blk->do_oop(adr);
217 adr = ik->adr_host_klass();
218 if (mr.contains(adr)) blk->do_oop(adr);
219 adr = ik->adr_signers();
220 if (mr.contains(adr)) blk->do_oop(adr);
221 adr = ik->adr_source_file_name();
222 if (mr.contains(adr)) blk->do_oop(adr);
223 adr = ik->adr_source_debug_extension();
224 if (mr.contains(adr)) blk->do_oop(adr);
225 adr = ik->adr_inner_classes();
226 if (mr.contains(adr)) blk->do_oop(adr);
227 adr = ik->adr_implementors();
228 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
229 if (mr.contains(&adr[i])) blk->do_oop(&adr[i]);
230 }
231 adr = ik->adr_generic_signature();
232 if (mr.contains(adr)) blk->do_oop(adr);
233 adr = ik->adr_class_annotations();
234 if (mr.contains(adr)) blk->do_oop(adr);
235 adr = ik->adr_fields_annotations();
236 if (mr.contains(adr)) blk->do_oop(adr);
237 adr = ik->adr_methods_annotations();
238 if (mr.contains(adr)) blk->do_oop(adr);
239 adr = ik->adr_methods_parameter_annotations();
240 if (mr.contains(adr)) blk->do_oop(adr);
241 adr = ik->adr_methods_default_annotations();
242 if (mr.contains(adr)) blk->do_oop(adr);
244 klassKlass::oop_oop_iterate_m(obj, blk, mr);
246 if(ik->oop_map_cache() != NULL) ik->oop_map_cache()->oop_iterate(blk, mr);
247 return size;
248 }
250 int instanceKlassKlass::oop_adjust_pointers(oop obj) {
251 assert(obj->is_klass(),"must be a klass");
252 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(), "must be instance klass");
254 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
255 ik->adjust_static_fields();
256 ik->vtable()->oop_adjust_pointers();
257 ik->itable()->oop_adjust_pointers();
259 MarkSweep::adjust_pointer(ik->adr_array_klasses());
260 MarkSweep::adjust_pointer(ik->adr_methods());
261 MarkSweep::adjust_pointer(ik->adr_method_ordering());
262 MarkSweep::adjust_pointer(ik->adr_local_interfaces());
263 MarkSweep::adjust_pointer(ik->adr_transitive_interfaces());
264 MarkSweep::adjust_pointer(ik->adr_fields());
265 MarkSweep::adjust_pointer(ik->adr_constants());
266 MarkSweep::adjust_pointer(ik->adr_class_loader());
267 MarkSweep::adjust_pointer(ik->adr_protection_domain());
268 MarkSweep::adjust_pointer(ik->adr_host_klass());
269 MarkSweep::adjust_pointer(ik->adr_signers());
270 MarkSweep::adjust_pointer(ik->adr_source_file_name());
271 MarkSweep::adjust_pointer(ik->adr_source_debug_extension());
272 MarkSweep::adjust_pointer(ik->adr_inner_classes());
273 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
274 MarkSweep::adjust_pointer(&ik->adr_implementors()[i]);
275 }
276 MarkSweep::adjust_pointer(ik->adr_generic_signature());
277 MarkSweep::adjust_pointer(ik->adr_class_annotations());
278 MarkSweep::adjust_pointer(ik->adr_fields_annotations());
279 MarkSweep::adjust_pointer(ik->adr_methods_annotations());
280 MarkSweep::adjust_pointer(ik->adr_methods_parameter_annotations());
281 MarkSweep::adjust_pointer(ik->adr_methods_default_annotations());
283 iterate_c_heap_oops(ik, &MarkSweep::adjust_root_pointer_closure);
285 return klassKlass::oop_adjust_pointers(obj);
286 }
288 #ifndef SERIALGC
289 void instanceKlassKlass::oop_copy_contents(PSPromotionManager* pm, oop obj) {
290 assert(!pm->depth_first(), "invariant");
291 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
292 ik->copy_static_fields(pm);
294 oop* loader_addr = ik->adr_class_loader();
295 if (PSScavenge::should_scavenge(loader_addr)) {
296 pm->claim_or_forward_breadth(loader_addr);
297 }
299 oop* pd_addr = ik->adr_protection_domain();
300 if (PSScavenge::should_scavenge(pd_addr)) {
301 pm->claim_or_forward_breadth(pd_addr);
302 }
304 oop* hk_addr = ik->adr_host_klass();
305 if (PSScavenge::should_scavenge(hk_addr)) {
306 pm->claim_or_forward_breadth(hk_addr);
307 }
309 oop* sg_addr = ik->adr_signers();
310 if (PSScavenge::should_scavenge(sg_addr)) {
311 pm->claim_or_forward_breadth(sg_addr);
312 }
314 klassKlass::oop_copy_contents(pm, obj);
315 }
317 void instanceKlassKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
318 assert(pm->depth_first(), "invariant");
319 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
320 ik->push_static_fields(pm);
322 oop* loader_addr = ik->adr_class_loader();
323 if (PSScavenge::should_scavenge(loader_addr)) {
324 pm->claim_or_forward_depth(loader_addr);
325 }
327 oop* pd_addr = ik->adr_protection_domain();
328 if (PSScavenge::should_scavenge(pd_addr)) {
329 pm->claim_or_forward_depth(pd_addr);
330 }
332 oop* hk_addr = ik->adr_host_klass();
333 if (PSScavenge::should_scavenge(hk_addr)) {
334 pm->claim_or_forward_depth(hk_addr);
335 }
337 oop* sg_addr = ik->adr_signers();
338 if (PSScavenge::should_scavenge(sg_addr)) {
339 pm->claim_or_forward_depth(sg_addr);
340 }
342 klassKlass::oop_copy_contents(pm, obj);
343 }
345 int instanceKlassKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
346 assert(obj->is_klass(),"must be a klass");
347 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(),
348 "must be instance klass");
350 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
351 ik->update_static_fields();
352 ik->vtable()->oop_update_pointers(cm);
353 ik->itable()->oop_update_pointers(cm);
355 oop* const beg_oop = ik->oop_block_beg();
356 oop* const end_oop = ik->oop_block_end();
357 for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) {
358 PSParallelCompact::adjust_pointer(cur_oop);
359 }
361 OopClosure* closure = PSParallelCompact::adjust_root_pointer_closure();
362 iterate_c_heap_oops(ik, closure);
364 klassKlass::oop_update_pointers(cm, obj);
365 return ik->object_size();
366 }
368 int instanceKlassKlass::oop_update_pointers(ParCompactionManager* cm, oop obj,
369 HeapWord* beg_addr,
370 HeapWord* end_addr) {
371 assert(obj->is_klass(),"must be a klass");
372 assert(klassOop(obj)->klass_part()->oop_is_instance_slow(),
373 "must be instance klass");
375 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
376 ik->update_static_fields(beg_addr, end_addr);
377 ik->vtable()->oop_update_pointers(cm, beg_addr, end_addr);
378 ik->itable()->oop_update_pointers(cm, beg_addr, end_addr);
380 oop* const beg_oop = MAX2((oop*)beg_addr, ik->oop_block_beg());
381 oop* const end_oop = MIN2((oop*)end_addr, ik->oop_block_end());
382 for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) {
383 PSParallelCompact::adjust_pointer(cur_oop);
384 }
386 // The oop_map_cache, jni_ids and jni_id_map are allocated from the C heap,
387 // and so don't lie within any 'Chunk' boundaries. Update them when the
388 // lowest addressed oop in the instanceKlass 'oop_block' is updated.
389 if (beg_oop == ik->oop_block_beg()) {
390 OopClosure* closure = PSParallelCompact::adjust_root_pointer_closure();
391 iterate_c_heap_oops(ik, closure);
392 }
394 klassKlass::oop_update_pointers(cm, obj, beg_addr, end_addr);
395 return ik->object_size();
396 }
397 #endif // SERIALGC
399 klassOop instanceKlassKlass::allocate_instance_klass(int vtable_len, int itable_len, int static_field_size,
400 int nonstatic_oop_map_size, ReferenceType rt, TRAPS) {
402 int size = instanceKlass::object_size(align_object_offset(vtable_len) + align_object_offset(itable_len) + static_field_size + nonstatic_oop_map_size);
404 // Allocation
405 KlassHandle h_this_klass(THREAD, as_klassOop());
406 KlassHandle k;
407 if (rt == REF_NONE) {
408 // regular klass
409 instanceKlass o;
410 k = base_create_klass(h_this_klass, size, o.vtbl_value(), CHECK_NULL);
411 } else {
412 // reference klass
413 instanceRefKlass o;
414 k = base_create_klass(h_this_klass, size, o.vtbl_value(), CHECK_NULL);
415 }
416 {
417 No_Safepoint_Verifier no_safepoint; // until k becomes parsable
418 instanceKlass* ik = (instanceKlass*) k()->klass_part();
419 assert(!k()->is_parsable(), "not expecting parsability yet.");
421 // The sizes of these these three variables are used for determining the
422 // size of the instanceKlassOop. It is critical that these are set to the right
423 // sizes before the first GC, i.e., when we allocate the mirror.
424 ik->set_vtable_length(vtable_len);
425 ik->set_itable_length(itable_len);
426 ik->set_static_field_size(static_field_size);
427 ik->set_nonstatic_oop_map_size(nonstatic_oop_map_size);
428 assert(k()->size() == size, "wrong size for object");
430 ik->set_array_klasses(NULL);
431 ik->set_methods(NULL);
432 ik->set_method_ordering(NULL);
433 ik->set_local_interfaces(NULL);
434 ik->set_transitive_interfaces(NULL);
435 ik->init_implementor();
436 ik->set_fields(NULL);
437 ik->set_constants(NULL);
438 ik->set_class_loader(NULL);
439 ik->set_protection_domain(NULL);
440 ik->set_host_klass(NULL);
441 ik->set_signers(NULL);
442 ik->set_source_file_name(NULL);
443 ik->set_source_debug_extension(NULL);
444 ik->set_inner_classes(NULL);
445 ik->set_static_oop_field_size(0);
446 ik->set_nonstatic_field_size(0);
447 ik->set_is_marked_dependent(false);
448 ik->set_init_state(instanceKlass::allocated);
449 ik->set_init_thread(NULL);
450 ik->set_reference_type(rt);
451 ik->set_oop_map_cache(NULL);
452 ik->set_jni_ids(NULL);
453 ik->set_osr_nmethods_head(NULL);
454 ik->set_breakpoints(NULL);
455 ik->init_previous_versions();
456 ik->set_generic_signature(NULL);
457 ik->release_set_methods_jmethod_ids(NULL);
458 ik->release_set_methods_cached_itable_indices(NULL);
459 ik->set_class_annotations(NULL);
460 ik->set_fields_annotations(NULL);
461 ik->set_methods_annotations(NULL);
462 ik->set_methods_parameter_annotations(NULL);
463 ik->set_methods_default_annotations(NULL);
464 ik->set_enclosing_method_indices(0, 0);
465 ik->set_jvmti_cached_class_field_map(NULL);
466 ik->set_initial_method_idnum(0);
467 assert(k()->is_parsable(), "should be parsable here.");
469 // initialize the non-header words to zero
470 intptr_t* p = (intptr_t*)k();
471 for (int index = instanceKlass::header_size(); index < size; index++) {
472 p[index] = NULL_WORD;
473 }
475 // To get verify to work - must be set to partial loaded before first GC point.
476 k()->set_partially_loaded();
477 }
479 // GC can happen here
480 java_lang_Class::create_mirror(k, CHECK_NULL); // Allocate mirror
481 return k();
482 }
486 #ifndef PRODUCT
488 // Printing
490 #define BULLET " - "
492 static const char* state_names[] = {
493 "unparseable_by_gc", "allocated", "loaded", "linked", "being_initialized", "fully_initialized", "initialization_error"
494 };
497 void instanceKlassKlass::oop_print_on(oop obj, outputStream* st) {
498 assert(obj->is_klass(), "must be klass");
499 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
500 klassKlass::oop_print_on(obj, st);
502 st->print(BULLET"instance size: %d", ik->size_helper()); st->cr();
503 st->print(BULLET"klass size: %d", ik->object_size()); st->cr();
504 st->print(BULLET"access: "); ik->access_flags().print_on(st); st->cr();
505 st->print(BULLET"state: "); st->print_cr(state_names[ik->_init_state]);
506 st->print(BULLET"name: "); ik->name()->print_value_on(st); st->cr();
507 st->print(BULLET"super: "); ik->super()->print_value_on(st); st->cr();
508 st->print(BULLET"sub: ");
509 Klass* sub = ik->subklass();
510 int n;
511 for (n = 0; sub != NULL; n++, sub = sub->next_sibling()) {
512 if (n < MaxSubklassPrintSize) {
513 sub->as_klassOop()->print_value_on(st);
514 st->print(" ");
515 }
516 }
517 if (n >= MaxSubklassPrintSize) st->print("(%d more klasses...)", n - MaxSubklassPrintSize);
518 st->cr();
520 if (ik->is_interface()) {
521 st->print_cr(BULLET"nof implementors: %d", ik->nof_implementors());
522 int print_impl = 0;
523 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
524 if (ik->implementor(i) != NULL) {
525 if (++print_impl == 1)
526 st->print_cr(BULLET"implementor: ");
527 st->print(" ");
528 ik->implementor(i)->print_value_on(st);
529 }
530 }
531 if (print_impl > 0) st->cr();
532 }
534 st->print(BULLET"arrays: "); ik->array_klasses()->print_value_on(st); st->cr();
535 st->print(BULLET"methods: "); ik->methods()->print_value_on(st); st->cr();
536 if (Verbose) {
537 objArrayOop methods = ik->methods();
538 for(int i = 0; i < methods->length(); i++) {
539 tty->print("%d : ", i); methods->obj_at(i)->print_value(); tty->cr();
540 }
541 }
542 st->print(BULLET"method ordering: "); ik->method_ordering()->print_value_on(st); st->cr();
543 st->print(BULLET"local interfaces: "); ik->local_interfaces()->print_value_on(st); st->cr();
544 st->print(BULLET"trans. interfaces: "); ik->transitive_interfaces()->print_value_on(st); st->cr();
545 st->print(BULLET"constants: "); ik->constants()->print_value_on(st); st->cr();
546 st->print(BULLET"class loader: "); ik->class_loader()->print_value_on(st); st->cr();
547 st->print(BULLET"protection domain: "); ik->protection_domain()->print_value_on(st); st->cr();
548 st->print(BULLET"host class: "); ik->host_klass()->print_value_on(st); st->cr();
549 st->print(BULLET"signers: "); ik->signers()->print_value_on(st); st->cr();
550 if (ik->source_file_name() != NULL) {
551 st->print(BULLET"source file: ");
552 ik->source_file_name()->print_value_on(st);
553 st->cr();
554 }
555 if (ik->source_debug_extension() != NULL) {
556 st->print(BULLET"source debug extension: ");
557 ik->source_debug_extension()->print_value_on(st);
558 st->cr();
559 }
561 {
562 ResourceMark rm;
563 // PreviousVersionInfo objects returned via PreviousVersionWalker
564 // contain a GrowableArray of handles. We have to clean up the
565 // GrowableArray _after_ the PreviousVersionWalker destructor
566 // has destroyed the handles.
567 {
568 bool have_pv = false;
569 PreviousVersionWalker pvw(ik);
570 for (PreviousVersionInfo * pv_info = pvw.next_previous_version();
571 pv_info != NULL; pv_info = pvw.next_previous_version()) {
572 if (!have_pv)
573 st->print(BULLET"previous version: ");
574 have_pv = true;
575 pv_info->prev_constant_pool_handle()()->print_value_on(st);
576 }
577 if (have_pv) st->cr();
578 } // pvw is cleaned up
579 } // rm is cleaned up
581 if (ik->generic_signature() != NULL) {
582 st->print(BULLET"generic signature: ");
583 ik->generic_signature()->print_value_on(st);
584 st->cr();
585 }
586 st->print(BULLET"inner classes: "); ik->inner_classes()->print_value_on(st); st->cr();
587 st->print(BULLET"java mirror: "); ik->java_mirror()->print_value_on(st); st->cr();
588 st->print(BULLET"vtable length %d (start addr: " INTPTR_FORMAT ")", ik->vtable_length(), ik->start_of_vtable()); st->cr();
589 st->print(BULLET"itable length %d (start addr: " INTPTR_FORMAT ")", ik->itable_length(), ik->start_of_itable()); st->cr();
590 st->print_cr(BULLET"---- static fields (%d words):", ik->static_field_size());
591 FieldPrinter print_static_field(st);
592 ik->do_local_static_fields(&print_static_field);
593 st->print_cr(BULLET"---- non-static fields (%d words):", ik->nonstatic_field_size());
594 FieldPrinter print_nonstatic_field(st);
595 ik->do_nonstatic_fields(&print_nonstatic_field);
597 st->print(BULLET"static oop maps: ");
598 if (ik->static_oop_field_size() > 0) {
599 int first_offset = ik->offset_of_static_fields();
600 st->print("%d-%d", first_offset, first_offset + ik->static_oop_field_size() - 1);
601 }
602 st->cr();
604 st->print(BULLET"non-static oop maps: ");
605 OopMapBlock* map = ik->start_of_nonstatic_oop_maps();
606 OopMapBlock* end_map = map + ik->nonstatic_oop_map_size();
607 while (map < end_map) {
608 st->print("%d-%d ", map->offset(), map->offset() + heapOopSize*(map->length() - 1));
609 map++;
610 }
611 st->cr();
612 }
615 void instanceKlassKlass::oop_print_value_on(oop obj, outputStream* st) {
616 assert(obj->is_klass(), "must be klass");
617 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
618 ik->name()->print_value_on(st);
619 }
621 #endif // PRODUCT
623 const char* instanceKlassKlass::internal_name() const {
624 return "{instance class}";
625 }
627 // Verification
629 class VerifyFieldClosure: public OopClosure {
630 protected:
631 template <class T> void do_oop_work(T* p) {
632 guarantee(Universe::heap()->is_in(p), "should be in heap");
633 oop obj = oopDesc::load_decode_heap_oop(p);
634 guarantee(obj->is_oop_or_null(), "should be in heap");
635 }
636 public:
637 virtual void do_oop(oop* p) { VerifyFieldClosure::do_oop_work(p); }
638 virtual void do_oop(narrowOop* p) { VerifyFieldClosure::do_oop_work(p); }
639 };
641 void instanceKlassKlass::oop_verify_on(oop obj, outputStream* st) {
642 klassKlass::oop_verify_on(obj, st);
643 if (!obj->partially_loaded()) {
644 Thread *thread = Thread::current();
645 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
647 #ifndef PRODUCT
648 // Avoid redundant verifies
649 if (ik->_verify_count == Universe::verify_count()) return;
650 ik->_verify_count = Universe::verify_count();
651 #endif
652 // Verify that klass is present in SystemDictionary
653 if (ik->is_loaded() && !ik->is_anonymous()) {
654 symbolHandle h_name (thread, ik->name());
655 Handle h_loader (thread, ik->class_loader());
656 Handle h_obj(thread, obj);
657 SystemDictionary::verify_obj_klass_present(h_obj, h_name, h_loader);
658 }
660 // Verify static fields
661 VerifyFieldClosure blk;
662 ik->iterate_static_fields(&blk);
664 // Verify vtables
665 if (ik->is_linked()) {
666 ResourceMark rm(thread);
667 // $$$ This used to be done only for m/s collections. Doing it
668 // always seemed a valid generalization. (DLD -- 6/00)
669 ik->vtable()->verify(st);
670 }
672 // Verify oop map cache
673 if (ik->oop_map_cache() != NULL) {
674 ik->oop_map_cache()->verify();
675 }
677 // Verify first subklass
678 if (ik->subklass_oop() != NULL) {
679 guarantee(ik->subklass_oop()->is_perm(), "should be in permspace");
680 guarantee(ik->subklass_oop()->is_klass(), "should be klass");
681 }
683 // Verify siblings
684 klassOop super = ik->super();
685 Klass* sib = ik->next_sibling();
686 int sib_count = 0;
687 while (sib != NULL) {
688 if (sib == ik) {
689 fatal1("subclass cycle of length %d", sib_count);
690 }
691 if (sib_count >= 100000) {
692 fatal1("suspiciously long subclass list %d", sib_count);
693 }
694 guarantee(sib->as_klassOop()->is_klass(), "should be klass");
695 guarantee(sib->as_klassOop()->is_perm(), "should be in permspace");
696 guarantee(sib->super() == super, "siblings should have same superklass");
697 sib = sib->next_sibling();
698 }
700 // Verify implementor fields
701 bool saw_null_impl = false;
702 for (int i = 0; i < instanceKlass::implementors_limit; i++) {
703 klassOop im = ik->implementor(i);
704 if (im == NULL) { saw_null_impl = true; continue; }
705 guarantee(!saw_null_impl, "non-nulls must preceded all nulls");
706 guarantee(ik->is_interface(), "only interfaces should have implementor set");
707 guarantee(i < ik->nof_implementors(), "should only have one implementor");
708 guarantee(im->is_perm(), "should be in permspace");
709 guarantee(im->is_klass(), "should be klass");
710 guarantee(!Klass::cast(klassOop(im))->is_interface(), "implementors cannot be interfaces");
711 }
713 // Verify local interfaces
714 objArrayOop local_interfaces = ik->local_interfaces();
715 guarantee(local_interfaces->is_perm(), "should be in permspace");
716 guarantee(local_interfaces->is_objArray(), "should be obj array");
717 int j;
718 for (j = 0; j < local_interfaces->length(); j++) {
719 oop e = local_interfaces->obj_at(j);
720 guarantee(e->is_klass() && Klass::cast(klassOop(e))->is_interface(), "invalid local interface");
721 }
723 // Verify transitive interfaces
724 objArrayOop transitive_interfaces = ik->transitive_interfaces();
725 guarantee(transitive_interfaces->is_perm(), "should be in permspace");
726 guarantee(transitive_interfaces->is_objArray(), "should be obj array");
727 for (j = 0; j < transitive_interfaces->length(); j++) {
728 oop e = transitive_interfaces->obj_at(j);
729 guarantee(e->is_klass() && Klass::cast(klassOop(e))->is_interface(), "invalid transitive interface");
730 }
732 // Verify methods
733 objArrayOop methods = ik->methods();
734 guarantee(methods->is_perm(), "should be in permspace");
735 guarantee(methods->is_objArray(), "should be obj array");
736 for (j = 0; j < methods->length(); j++) {
737 guarantee(methods->obj_at(j)->is_method(), "non-method in methods array");
738 }
739 for (j = 0; j < methods->length() - 1; j++) {
740 methodOop m1 = methodOop(methods->obj_at(j));
741 methodOop m2 = methodOop(methods->obj_at(j + 1));
742 guarantee(m1->name()->fast_compare(m2->name()) <= 0, "methods not sorted correctly");
743 }
745 // Verify method ordering
746 typeArrayOop method_ordering = ik->method_ordering();
747 guarantee(method_ordering->is_perm(), "should be in permspace");
748 guarantee(method_ordering->is_typeArray(), "should be type array");
749 int length = method_ordering->length();
750 if (JvmtiExport::can_maintain_original_method_order()) {
751 guarantee(length == methods->length(), "invalid method ordering length");
752 jlong sum = 0;
753 for (j = 0; j < length; j++) {
754 int original_index = method_ordering->int_at(j);
755 guarantee(original_index >= 0 && original_index < length, "invalid method ordering index");
756 sum += original_index;
757 }
758 // Verify sum of indices 0,1,...,length-1
759 guarantee(sum == ((jlong)length*(length-1))/2, "invalid method ordering sum");
760 } else {
761 guarantee(length == 0, "invalid method ordering length");
762 }
764 // Verify JNI static field identifiers
765 if (ik->jni_ids() != NULL) {
766 ik->jni_ids()->verify(ik->as_klassOop());
767 }
769 // Verify other fields
770 if (ik->array_klasses() != NULL) {
771 guarantee(ik->array_klasses()->is_perm(), "should be in permspace");
772 guarantee(ik->array_klasses()->is_klass(), "should be klass");
773 }
774 guarantee(ik->fields()->is_perm(), "should be in permspace");
775 guarantee(ik->fields()->is_typeArray(), "should be type array");
776 guarantee(ik->constants()->is_perm(), "should be in permspace");
777 guarantee(ik->constants()->is_constantPool(), "should be constant pool");
778 guarantee(ik->inner_classes()->is_perm(), "should be in permspace");
779 guarantee(ik->inner_classes()->is_typeArray(), "should be type array");
780 if (ik->source_file_name() != NULL) {
781 guarantee(ik->source_file_name()->is_perm(), "should be in permspace");
782 guarantee(ik->source_file_name()->is_symbol(), "should be symbol");
783 }
784 if (ik->source_debug_extension() != NULL) {
785 guarantee(ik->source_debug_extension()->is_perm(), "should be in permspace");
786 guarantee(ik->source_debug_extension()->is_symbol(), "should be symbol");
787 }
788 if (ik->protection_domain() != NULL) {
789 guarantee(ik->protection_domain()->is_oop(), "should be oop");
790 }
791 if (ik->host_klass() != NULL) {
792 guarantee(ik->host_klass()->is_oop(), "should be oop");
793 }
794 if (ik->signers() != NULL) {
795 guarantee(ik->signers()->is_objArray(), "should be obj array");
796 }
797 if (ik->generic_signature() != NULL) {
798 guarantee(ik->generic_signature()->is_perm(), "should be in permspace");
799 guarantee(ik->generic_signature()->is_symbol(), "should be symbol");
800 }
801 if (ik->class_annotations() != NULL) {
802 guarantee(ik->class_annotations()->is_typeArray(), "should be type array");
803 }
804 if (ik->fields_annotations() != NULL) {
805 guarantee(ik->fields_annotations()->is_objArray(), "should be obj array");
806 }
807 if (ik->methods_annotations() != NULL) {
808 guarantee(ik->methods_annotations()->is_objArray(), "should be obj array");
809 }
810 if (ik->methods_parameter_annotations() != NULL) {
811 guarantee(ik->methods_parameter_annotations()->is_objArray(), "should be obj array");
812 }
813 if (ik->methods_default_annotations() != NULL) {
814 guarantee(ik->methods_default_annotations()->is_objArray(), "should be obj array");
815 }
816 }
817 }
820 bool instanceKlassKlass::oop_partially_loaded(oop obj) const {
821 assert(obj->is_klass(), "object must be klass");
822 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
823 assert(ik->oop_is_instance(), "object must be instanceKlass");
824 return ik->transitive_interfaces() == (objArrayOop) obj; // Check whether transitive_interfaces points to self
825 }
828 // The transitive_interfaces is the last field set when loading an object.
829 void instanceKlassKlass::oop_set_partially_loaded(oop obj) {
830 assert(obj->is_klass(), "object must be klass");
831 instanceKlass* ik = instanceKlass::cast(klassOop(obj));
832 // Set the layout helper to a place-holder value, until fuller initialization.
833 // (This allows asserts in oop_is_instance to succeed.)
834 ik->set_layout_helper(Klass::instance_layout_helper(0, true));
835 assert(ik->oop_is_instance(), "object must be instanceKlass");
836 assert(ik->transitive_interfaces() == NULL, "just checking");
837 ik->set_transitive_interfaces((objArrayOop) obj); // Temporarily set transitive_interfaces to point to self
838 }