1 /*
2 * Copyright (c) 1999, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "ci/ciField.hpp"
27 #include "ci/ciInstance.hpp"
28 #include "ci/ciInstanceKlass.hpp"
29 #include "ci/ciUtilities.hpp"
30 #include "classfile/systemDictionary.hpp"
31 #include "gc_implementation/shenandoah/shenandoahBrooksPointer.hpp"
32 #include "memory/allocation.hpp"
33 #include "memory/allocation.inline.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "oops/fieldStreams.hpp"
36 #include "runtime/fieldDescriptor.hpp"
37
38 // ciInstanceKlass
39 //
40 // This class represents a Klass* in the HotSpot virtual machine
41 // whose Klass part in an InstanceKlass.
42
43 // ------------------------------------------------------------------
44 // ciInstanceKlass::ciInstanceKlass
45 //
46 // Loaded instance klass.
47 ciInstanceKlass::ciInstanceKlass(KlassHandle h_k) :
48 ciKlass(h_k), _non_static_fields(NULL)
49 {
50 assert(get_Klass()->oop_is_instance(), "wrong type");
51 assert(get_instanceKlass()->is_loaded(), "must be at least loaded");
52 InstanceKlass* ik = get_instanceKlass();
53
54 AccessFlags access_flags = ik->access_flags();
55 _flags = ciFlags(access_flags);
56 _has_finalizer = access_flags.has_finalizer();
57 _has_subklass = ik->subklass() != NULL;
58 _init_state = ik->init_state();
59 _nonstatic_field_size = ik->nonstatic_field_size();
60 _has_nonstatic_fields = ik->has_nonstatic_fields();
61 _has_default_methods = ik->has_default_methods();
62 _is_anonymous = ik->is_anonymous();
63 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields:
64
65 _implementor = NULL; // we will fill these lazily
66
67 Thread *thread = Thread::current();
68 if (ciObjectFactory::is_initialized()) {
69 _loader = JNIHandles::make_local(thread, ik->class_loader());
70 _protection_domain = JNIHandles::make_local(thread,
71 ik->protection_domain());
72 _is_shared = false;
73 } else {
74 Handle h_loader(thread, ik->class_loader());
75 Handle h_protection_domain(thread, ik->protection_domain());
76 _loader = JNIHandles::make_global(h_loader);
77 _protection_domain = JNIHandles::make_global(h_protection_domain);
78 _is_shared = true;
79 }
80
81 // Lazy fields get filled in only upon request.
82 _super = NULL;
83 _java_mirror = NULL;
84
85 if (is_shared()) {
86 if (h_k() != SystemDictionary::Object_klass()) {
87 super();
88 }
89 //compute_nonstatic_fields(); // done outside of constructor
90 }
91
92 _field_cache = NULL;
93 }
94
95 // Version for unloaded classes:
96 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
97 jobject loader, jobject protection_domain)
98 : ciKlass(name, T_OBJECT)
99 {
100 assert(name->byte_at(0) != '[', "not an instance klass");
101 _init_state = (InstanceKlass::ClassState)0;
102 _nonstatic_field_size = -1;
103 _has_nonstatic_fields = false;
104 _nonstatic_fields = NULL;
105 _is_anonymous = false;
106 _loader = loader;
107 _protection_domain = protection_domain;
108 _is_shared = false;
109 _super = NULL;
110 _java_mirror = NULL;
111 _field_cache = NULL;
112 }
113
114
115
116 // ------------------------------------------------------------------
117 // ciInstanceKlass::compute_shared_is_initialized
118 void ciInstanceKlass::compute_shared_init_state() {
119 GUARDED_VM_ENTRY(
120 InstanceKlass* ik = get_instanceKlass();
121 _init_state = ik->init_state();
122 )
123 }
124
125 // ------------------------------------------------------------------
126 // ciInstanceKlass::compute_shared_has_subklass
127 bool ciInstanceKlass::compute_shared_has_subklass() {
128 GUARDED_VM_ENTRY(
129 InstanceKlass* ik = get_instanceKlass();
130 _has_subklass = ik->subklass() != NULL;
131 return _has_subklass;
132 )
133 }
134
135 // ------------------------------------------------------------------
136 // ciInstanceKlass::loader
137 oop ciInstanceKlass::loader() {
138 ASSERT_IN_VM;
139 return JNIHandles::resolve(_loader);
140 }
141
142 // ------------------------------------------------------------------
143 // ciInstanceKlass::loader_handle
144 jobject ciInstanceKlass::loader_handle() {
145 return _loader;
146 }
147
148 // ------------------------------------------------------------------
149 // ciInstanceKlass::protection_domain
150 oop ciInstanceKlass::protection_domain() {
151 ASSERT_IN_VM;
152 return JNIHandles::resolve(_protection_domain);
153 }
154
155 // ------------------------------------------------------------------
156 // ciInstanceKlass::protection_domain_handle
157 jobject ciInstanceKlass::protection_domain_handle() {
158 return _protection_domain;
159 }
160
161 // ------------------------------------------------------------------
162 // ciInstanceKlass::field_cache
163 //
164 // Get the field cache associated with this klass.
165 ciConstantPoolCache* ciInstanceKlass::field_cache() {
166 if (is_shared()) {
167 return NULL;
168 }
169 if (_field_cache == NULL) {
170 assert(!is_java_lang_Object(), "Object has no fields");
171 Arena* arena = CURRENT_ENV->arena();
172 _field_cache = new (arena) ciConstantPoolCache(arena, 5);
173 }
174 return _field_cache;
175 }
176
177 // ------------------------------------------------------------------
178 // ciInstanceKlass::get_canonical_holder
179 //
180 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
181 #ifdef ASSERT
182 if (!((offset >= 0 && offset < layout_helper()) || (UseShenandoahGC && offset == ShenandoahBrooksPointer::byte_offset()))) {
183 tty->print("*** get_canonical_holder(%d) on ", offset);
184 this->print();
185 tty->print_cr(" ***");
186 fatal("offset must be tame");
187 }
188 #endif
189
190 if (offset < instanceOopDesc::base_offset_in_bytes()) {
191 // All header offsets belong properly to java/lang/Object.
192 return CURRENT_ENV->Object_klass();
193 }
194
195 ciInstanceKlass* self = this;
196 for (;;) {
197 assert(self->is_loaded(), "must be loaded to have size");
198 ciInstanceKlass* super = self->super();
199 if (super == NULL || super->nof_nonstatic_fields() == 0 ||
200 !super->contains_field_offset(offset)) {
201 return self;
202 } else {
203 self = super; // return super->get_canonical_holder(offset)
204 }
205 }
206 }
207
208 // ------------------------------------------------------------------
209 // ciInstanceKlass::is_java_lang_Object
210 //
211 // Is this klass java.lang.Object?
212 bool ciInstanceKlass::is_java_lang_Object() const {
213 return equals(CURRENT_ENV->Object_klass());
214 }
215
216 // ------------------------------------------------------------------
217 // ciInstanceKlass::uses_default_loader
218 bool ciInstanceKlass::uses_default_loader() const {
219 // Note: We do not need to resolve the handle or enter the VM
220 // in order to test null-ness.
221 return _loader == NULL;
222 }
223
224 // ------------------------------------------------------------------
225
226 /**
227 * Return basic type of boxed value for box klass or T_OBJECT if not.
228 */
229 BasicType ciInstanceKlass::box_klass_type() const {
230 if (uses_default_loader() && is_loaded()) {
231 return SystemDictionary::box_klass_type(get_Klass());
232 } else {
233 return T_OBJECT;
234 }
235 }
236
237 /**
238 * Is this boxing klass?
239 */
240 bool ciInstanceKlass::is_box_klass() const {
241 return is_java_primitive(box_klass_type());
242 }
243
244 /**
245 * Is this boxed value offset?
246 */
247 bool ciInstanceKlass::is_boxed_value_offset(int offset) const {
248 BasicType bt = box_klass_type();
249 return is_java_primitive(bt) &&
250 (offset == java_lang_boxing_object::value_offset_in_bytes(bt));
251 }
252
253 // ------------------------------------------------------------------
254 // ciInstanceKlass::is_in_package
255 //
256 // Is this klass in the given package?
257 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
258 // To avoid class loader mischief, this test always rejects application classes.
259 if (!uses_default_loader())
260 return false;
261 GUARDED_VM_ENTRY(
262 return is_in_package_impl(packagename, len);
263 )
264 }
265
266 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
267 ASSERT_IN_VM;
268
269 // If packagename contains trailing '/' exclude it from the
270 // prefix-test since we test for it explicitly.
271 if (packagename[len - 1] == '/')
272 len--;
273
274 if (!name()->starts_with(packagename, len))
275 return false;
276
277 // Test if the class name is something like "java/lang".
278 if ((len + 1) > name()->utf8_length())
279 return false;
280
281 // Test for trailing '/'
282 if ((char) name()->byte_at(len) != '/')
283 return false;
284
285 // Make sure it's not actually in a subpackage:
286 if (name()->index_of_at(len+1, "/", 1) >= 0)
287 return false;
288
289 return true;
290 }
291
292 // ------------------------------------------------------------------
293 // ciInstanceKlass::print_impl
294 //
295 // Implementation of the print method.
296 void ciInstanceKlass::print_impl(outputStream* st) {
297 ciKlass::print_impl(st);
298 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i((address)loader()));)
299 if (is_loaded()) {
300 st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=",
301 bool_to_str(is_initialized()),
302 bool_to_str(has_finalizer()),
303 bool_to_str(has_subklass()),
304 layout_helper());
305
306 _flags.print_klass_flags();
307
308 if (_super) {
309 st->print(" super=");
310 _super->print_name();
311 }
312 if (_java_mirror) {
313 st->print(" mirror=PRESENT");
314 }
315 } else {
316 st->print(" loaded=false");
317 }
318 }
319
320 // ------------------------------------------------------------------
321 // ciInstanceKlass::super
322 //
323 // Get the superklass of this klass.
324 ciInstanceKlass* ciInstanceKlass::super() {
325 assert(is_loaded(), "must be loaded");
326 if (_super == NULL && !is_java_lang_Object()) {
327 GUARDED_VM_ENTRY(
328 Klass* super_klass = get_instanceKlass()->super();
329 _super = CURRENT_ENV->get_instance_klass(super_klass);
330 )
331 }
332 return _super;
333 }
334
335 // ------------------------------------------------------------------
336 // ciInstanceKlass::java_mirror
337 //
338 // Get the instance of java.lang.Class corresponding to this klass.
339 // Cache it on this->_java_mirror.
340 ciInstance* ciInstanceKlass::java_mirror() {
341 if (is_shared()) {
342 return ciKlass::java_mirror();
343 }
344 if (_java_mirror == NULL) {
345 _java_mirror = ciKlass::java_mirror();
346 }
347 return _java_mirror;
348 }
349
350 // ------------------------------------------------------------------
351 // ciInstanceKlass::unique_concrete_subklass
352 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
353 if (!is_loaded()) return NULL; // No change if class is not loaded
354 if (!is_abstract()) return NULL; // Only applies to abstract classes.
355 if (!has_subklass()) return NULL; // Must have at least one subklass.
356 VM_ENTRY_MARK;
357 InstanceKlass* ik = get_instanceKlass();
358 Klass* up = ik->up_cast_abstract();
359 assert(up->oop_is_instance(), "must be InstanceKlass");
360 if (ik == up) {
361 return NULL;
362 }
363 return CURRENT_THREAD_ENV->get_instance_klass(up);
364 }
365
366 // ------------------------------------------------------------------
367 // ciInstanceKlass::has_finalizable_subclass
368 bool ciInstanceKlass::has_finalizable_subclass() {
369 if (!is_loaded()) return true;
370 VM_ENTRY_MARK;
371 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL;
372 }
373
374 // ------------------------------------------------------------------
375 // ciInstanceKlass::get_field_by_offset
376 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
377 if (!is_static) {
378 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) {
379 ciField* field = _nonstatic_fields->at(i);
380 int field_off = field->offset_in_bytes();
381 if (field_off == field_offset)
382 return field;
383 if (field_off > field_offset)
384 break;
385 // could do binary search or check bins, but probably not worth it
386 }
387 return NULL;
388 }
389 VM_ENTRY_MARK;
390 InstanceKlass* k = get_instanceKlass();
391 fieldDescriptor fd;
392 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
393 return NULL;
394 }
395 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
396 return field;
397 }
398
399 // ------------------------------------------------------------------
400 // ciInstanceKlass::get_field_by_name
401 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
402 VM_ENTRY_MARK;
403 InstanceKlass* k = get_instanceKlass();
404 fieldDescriptor fd;
405 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
406 if (def == NULL) {
407 return NULL;
408 }
409 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
410 return field;
411 }
412
413 // ------------------------------------------------------------------
414 // ciInstanceKlass::non_static_fields.
415
416 class NonStaticFieldFiller: public FieldClosure {
417 GrowableArray<ciField*>* _arr;
418 ciEnv* _curEnv;
419 public:
420 NonStaticFieldFiller(ciEnv* curEnv, GrowableArray<ciField*>* arr) :
421 _curEnv(curEnv), _arr(arr)
422 {}
423 void do_field(fieldDescriptor* fd) {
424 ciField* field = new (_curEnv->arena()) ciField(fd);
425 _arr->append(field);
426 }
427 };
428
429 GrowableArray<ciField*>* ciInstanceKlass::non_static_fields() {
430 if (_non_static_fields == NULL) {
431 VM_ENTRY_MARK;
432 ciEnv* curEnv = ciEnv::current();
433 InstanceKlass* ik = get_instanceKlass();
434 int max_n_fields = ik->java_fields_count();
435
436 Arena* arena = curEnv->arena();
437 _non_static_fields =
438 new (arena) GrowableArray<ciField*>(arena, max_n_fields, 0, NULL);
439 NonStaticFieldFiller filler(curEnv, _non_static_fields);
440 ik->do_nonstatic_fields(&filler);
441 }
442 return _non_static_fields;
443 }
444
445 static int sort_field_by_offset(ciField** a, ciField** b) {
446 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
447 // (no worries about 32-bit overflow...)
448 }
449
450 // ------------------------------------------------------------------
451 // ciInstanceKlass::compute_nonstatic_fields
452 int ciInstanceKlass::compute_nonstatic_fields() {
453 assert(is_loaded(), "must be loaded");
454
455 if (_nonstatic_fields != NULL)
456 return _nonstatic_fields->length();
457
458 if (!has_nonstatic_fields()) {
459 Arena* arena = CURRENT_ENV->arena();
460 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL);
461 return 0;
462 }
463 assert(!is_java_lang_Object(), "bootstrap OK");
464
465 // Size in bytes of my fields, including inherited fields.
466 int fsize = nonstatic_field_size() * heapOopSize;
467
468 ciInstanceKlass* super = this->super();
469 GrowableArray<ciField*>* super_fields = NULL;
470 if (super != NULL && super->has_nonstatic_fields()) {
471 int super_fsize = super->nonstatic_field_size() * heapOopSize;
472 int super_flen = super->nof_nonstatic_fields();
473 super_fields = super->_nonstatic_fields;
474 assert(super_flen == 0 || super_fields != NULL, "first get nof_fields");
475 // See if I am no larger than my super; if so, I can use his fields.
476 if (fsize == super_fsize) {
477 _nonstatic_fields = super_fields;
478 return super_fields->length();
479 }
480 }
481
482 GrowableArray<ciField*>* fields = NULL;
483 GUARDED_VM_ENTRY({
484 fields = compute_nonstatic_fields_impl(super_fields);
485 });
486
487 if (fields == NULL) {
488 // This can happen if this class (java.lang.Class) has invisible fields.
489 _nonstatic_fields = super_fields;
490 return super_fields->length();
491 }
492
493 int flen = fields->length();
494
495 // Now sort them by offset, ascending.
496 // (In principle, they could mix with superclass fields.)
497 fields->sort(sort_field_by_offset);
498 _nonstatic_fields = fields;
499 return flen;
500 }
501
502 GrowableArray<ciField*>*
503 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
504 super_fields) {
505 ASSERT_IN_VM;
506 Arena* arena = CURRENT_ENV->arena();
507 int flen = 0;
508 GrowableArray<ciField*>* fields = NULL;
509 InstanceKlass* k = get_instanceKlass();
510 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
511 if (fs.access_flags().is_static()) continue;
512 flen += 1;
513 }
514
515 // allocate the array:
516 if (flen == 0) {
517 return NULL; // return nothing if none are locally declared
518 }
519 if (super_fields != NULL) {
520 flen += super_fields->length();
521 }
522 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL);
523 if (super_fields != NULL) {
524 fields->appendAll(super_fields);
525 }
526
527 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
528 if (fs.access_flags().is_static()) continue;
529 fieldDescriptor& fd = fs.field_descriptor();
530 ciField* field = new (arena) ciField(&fd);
531 fields->append(field);
532 }
533 assert(fields->length() == flen, "sanity");
534 return fields;
535 }
536
537 // ------------------------------------------------------------------
538 // ciInstanceKlass::find_method
539 //
540 // Find a method in this klass.
541 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
542 VM_ENTRY_MARK;
543 InstanceKlass* k = get_instanceKlass();
544 Symbol* name_sym = name->get_symbol();
545 Symbol* sig_sym= signature->get_symbol();
546
547 Method* m = k->find_method(name_sym, sig_sym);
548 if (m == NULL) return NULL;
549
550 return CURRENT_THREAD_ENV->get_method(m);
551 }
552
553 // ------------------------------------------------------------------
554 // ciInstanceKlass::is_leaf_type
555 bool ciInstanceKlass::is_leaf_type() {
556 assert(is_loaded(), "must be loaded");
557 if (is_shared()) {
558 return is_final(); // approximately correct
559 } else {
560 return !_has_subklass && (nof_implementors() == 0);
561 }
562 }
563
564 // ------------------------------------------------------------------
565 // ciInstanceKlass::implementor
566 //
567 // Report an implementor of this interface.
568 // Note that there are various races here, since my copy
569 // of _nof_implementors might be out of date with respect
570 // to results returned by InstanceKlass::implementor.
571 // This is OK, since any dependencies we decide to assert
572 // will be checked later under the Compile_lock.
573 ciInstanceKlass* ciInstanceKlass::implementor() {
574 ciInstanceKlass* impl = _implementor;
575 if (impl == NULL) {
576 // Go into the VM to fetch the implementor.
577 {
578 VM_ENTRY_MARK;
579 Klass* k = get_instanceKlass()->implementor();
580 if (k != NULL) {
581 if (k == get_instanceKlass()) {
582 // More than one implementors. Use 'this' in this case.
583 impl = this;
584 } else {
585 impl = CURRENT_THREAD_ENV->get_instance_klass(k);
586 }
587 }
588 }
589 // Memoize this result.
590 if (!is_shared()) {
591 _implementor = impl;
592 }
593 }
594 return impl;
595 }
596
597 ciInstanceKlass* ciInstanceKlass::host_klass() {
598 assert(is_loaded(), "must be loaded");
599 if (is_anonymous()) {
600 VM_ENTRY_MARK
601 Klass* host_klass = get_instanceKlass()->host_klass();
602 return CURRENT_ENV->get_instance_klass(host_klass);
603 }
604 return NULL;
605 }
606
607 // Utility class for printing of the contents of the static fields for
608 // use by compilation replay. It only prints out the information that
609 // could be consumed by the compiler, so for primitive types it prints
610 // out the actual value. For Strings it's the actual string value.
611 // For array types it it's first level array size since that's the
612 // only value which statically unchangeable. For all other reference
613 // types it simply prints out the dynamic type.
614
615 class StaticFinalFieldPrinter : public FieldClosure {
616 outputStream* _out;
617 const char* _holder;
618 public:
619 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
620 _out(out),
621 _holder(holder) {
622 }
623 void do_field(fieldDescriptor* fd) {
624 if (fd->is_final() && !fd->has_initial_value()) {
625 ResourceMark rm;
626 oop mirror = fd->field_holder()->java_mirror();
627 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
628 switch (fd->field_type()) {
629 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break;
630 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break;
631 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break;
632 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break;
633 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break;
634 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
635 case T_FLOAT: {
636 float f = mirror->float_field(fd->offset());
637 _out->print_cr("%d", *(int*)&f);
638 break;
639 }
640 case T_DOUBLE: {
641 double d = mirror->double_field(fd->offset());
642 _out->print_cr(INT64_FORMAT, *(int64_t*)&d);
643 break;
644 }
645 case T_ARRAY: {
646 oop value = mirror->obj_field_acquire(fd->offset());
647 if (value == NULL) {
648 _out->print_cr("null");
649 } else {
650 typeArrayOop ta = (typeArrayOop)value;
651 _out->print("%d", ta->length());
652 if (value->is_objArray()) {
653 objArrayOop oa = (objArrayOop)value;
654 const char* klass_name = value->klass()->name()->as_quoted_ascii();
655 _out->print(" %s", klass_name);
656 }
657 _out->cr();
658 }
659 break;
660 }
661 case T_OBJECT: {
662 oop value = mirror->obj_field_acquire(fd->offset());
663 if (value == NULL) {
664 _out->print_cr("null");
665 } else if (value->is_instance()) {
666 if (value->is_a(SystemDictionary::String_klass())) {
667 _out->print("\"");
668 _out->print_raw(java_lang_String::as_quoted_ascii(value));
669 _out->print_cr("\"");
670 } else {
671 const char* klass_name = value->klass()->name()->as_quoted_ascii();
672 _out->print_cr("%s", klass_name);
673 }
674 } else {
675 ShouldNotReachHere();
676 }
677 break;
678 }
679 default:
680 ShouldNotReachHere();
681 }
682 }
683 }
684 };
685
686
687 void ciInstanceKlass::dump_replay_data(outputStream* out) {
688 ResourceMark rm;
689
690 InstanceKlass* ik = get_instanceKlass();
691 ConstantPool* cp = ik->constants();
692
693 // Try to record related loaded classes
694 Klass* sub = ik->subklass();
695 while (sub != NULL) {
696 if (sub->oop_is_instance()) {
697 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii());
698 }
699 sub = sub->next_sibling();
700 }
701
702 // Dump out the state of the constant pool tags. During replay the
703 // tags will be validated for things which shouldn't change and
704 // classes will be resolved if the tags indicate that they were
705 // resolved at compile time.
706 out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(),
707 is_linked(), is_initialized(), cp->length());
708 for (int index = 1; index < cp->length(); index++) {
709 out->print(" %d", cp->tags()->at(index));
710 }
711 out->cr();
712 if (is_initialized()) {
713 // Dump out the static final fields in case the compilation relies
714 // on their value for correct replay.
715 StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii());
716 ik->do_local_static_fields(&sffp);
717 }
718 }
719
720 #ifdef ASSERT
721 bool ciInstanceKlass::debug_final_field_at(int offset) {
722 GUARDED_VM_ENTRY(
723 InstanceKlass* ik = get_instanceKlass();
724 fieldDescriptor fd;
725 if (ik->find_field_from_offset(offset, false, &fd)) {
726 return fd.is_final();
727 }
728 );
729 return false;
730 }
731
732 bool ciInstanceKlass::debug_stable_field_at(int offset) {
733 GUARDED_VM_ENTRY(
734 InstanceKlass* ik = get_instanceKlass();
735 fieldDescriptor fd;
736 if (ik->find_field_from_offset(offset, false, &fd)) {
737 return fd.is_stable();
738 }
739 );
740 return false;
741 }
742 #endif