1 /*
2 * Copyright (c) 1999, 2025, 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 "ci/ciField.hpp"
26 #include "ci/ciInstance.hpp"
27 #include "ci/ciInstanceKlass.hpp"
28 #include "ci/ciUtilities.inline.hpp"
29 #include "classfile/javaClasses.hpp"
30 #include "classfile/vmClasses.hpp"
31 #include "memory/allocation.hpp"
32 #include "memory/allocation.inline.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "oops/fieldStreams.inline.hpp"
35 #include "oops/instanceKlass.inline.hpp"
36 #include "oops/klass.inline.hpp"
37 #include "oops/oop.inline.hpp"
38 #include "runtime/fieldDescriptor.inline.hpp"
39 #include "runtime/handles.inline.hpp"
40 #include "runtime/jniHandles.inline.hpp"
41
42 // ciInstanceKlass
43 //
44 // This class represents a Klass* in the HotSpot virtual machine
45 // whose Klass part in an InstanceKlass.
46
47
48 // ------------------------------------------------------------------
49 // ciInstanceKlass::ciInstanceKlass
50 //
51 // Loaded instance klass.
52 ciInstanceKlass::ciInstanceKlass(Klass* k) :
53 ciKlass(k)
54 {
55 assert(get_Klass()->is_instance_klass(), "wrong type");
56 assert(get_instanceKlass()->is_loaded(), "must be at least loaded");
57 InstanceKlass* ik = get_instanceKlass();
58
59 AccessFlags access_flags = ik->access_flags();
60 _flags = ciFlags(access_flags);
61 _has_finalizer = ik->has_finalizer();
62 _has_subklass = flags().is_final() ? subklass_false : subklass_unknown;
63 _init_state = ik->init_state();
64 _has_nonstatic_fields = ik->has_nonstatic_fields();
65 _has_nonstatic_concrete_methods = ik->has_nonstatic_concrete_methods();
66 _is_hidden = ik->is_hidden();
67 _is_record = ik->is_record();
68 _nonstatic_fields = nullptr; // initialized lazily by compute_nonstatic_fields:
69 _has_injected_fields = -1;
70 _implementor = nullptr; // we will fill these lazily
71 _transitive_interfaces = nullptr;
72
73 // Ensure that the metadata wrapped by the ciMetadata is kept alive by GC.
74 // This is primarily useful for metadata which is considered as weak roots
75 // by the GC but need to be strong roots if reachable from a current compilation.
76 // InstanceKlass are created for both weak and strong metadata. Ensuring this metadata
77 // alive covers the cases where there are weak roots without performance cost.
78 oop holder = ik->klass_holder();
79 if (ik->class_loader_data()->has_class_mirror_holder()) {
80 // Though ciInstanceKlass records class loader oop, it's not enough to keep
81 // non-strong hidden classes alive (loader == nullptr). Klass holder should
82 // be used instead. It is enough to record a ciObject, since cached elements are never removed
83 // during ciObjectFactory lifetime. ciObjectFactory itself is created for
84 // every compilation and lives for the whole duration of the compilation.
85 assert(holder != nullptr, "holder of hidden class is the mirror which is never null");
86 (void)CURRENT_ENV->get_object(holder);
87 }
88
89 JavaThread *thread = JavaThread::current();
90 if (ciObjectFactory::is_initialized()) {
91 _loader = JNIHandles::make_local(thread, ik->class_loader());
92 _is_shared = false;
93 } else {
94 Handle h_loader(thread, ik->class_loader());
95 _loader = JNIHandles::make_global(h_loader);
96 _is_shared = true;
97 }
98
99 _has_trusted_loader = compute_has_trusted_loader();
100
101 // Lazy fields get filled in only upon request.
102 _super = nullptr;
103 _java_mirror = nullptr;
104
105 if (is_shared()) {
106 if (k != vmClasses::Object_klass()) {
107 super();
108 }
109 //compute_nonstatic_fields(); // done outside of constructor
110 }
111
112 _field_cache = nullptr;
113 }
114
115 // Version for unloaded classes:
116 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
117 jobject loader)
118 : ciKlass(name, T_OBJECT)
119 {
120 assert(name->char_at(0) != JVM_SIGNATURE_ARRAY, "not an instance klass");
121 _init_state = (InstanceKlass::ClassState)0;
122 _has_nonstatic_fields = false;
123 _nonstatic_fields = nullptr;
124 _has_injected_fields = -1;
125 _is_hidden = false;
126 _is_record = false;
127 _loader = loader;
128 _is_shared = false;
129 _super = nullptr;
130 _java_mirror = nullptr;
131 _field_cache = nullptr;
132 _has_trusted_loader = compute_has_trusted_loader();
133 }
134
135
136
137 // ------------------------------------------------------------------
138 // ciInstanceKlass::compute_shared_is_initialized
139 void ciInstanceKlass::compute_shared_init_state() {
140 GUARDED_VM_ENTRY(
141 InstanceKlass* ik = get_instanceKlass();
142 _init_state = ik->init_state();
143 )
144 }
145
146 // ------------------------------------------------------------------
147 // ciInstanceKlass::compute_shared_has_subklass
148 bool ciInstanceKlass::compute_shared_has_subklass() {
149 GUARDED_VM_ENTRY(
150 InstanceKlass* ik = get_instanceKlass();
151 _has_subklass = ik->subklass() != nullptr ? subklass_true : subklass_false;
152 return _has_subklass == subklass_true;
153 )
154 }
155
156 // ------------------------------------------------------------------
157 // ciInstanceKlass::loader
158 oop ciInstanceKlass::loader() {
159 ASSERT_IN_VM;
160 return JNIHandles::resolve(_loader);
161 }
162
163 // ------------------------------------------------------------------
164 // ciInstanceKlass::loader_handle
165 jobject ciInstanceKlass::loader_handle() {
166 return _loader;
167 }
168
169 // ------------------------------------------------------------------
170 // ciInstanceKlass::field_cache
171 //
172 // Get the field cache associated with this klass.
173 ciConstantPoolCache* ciInstanceKlass::field_cache() {
174 if (is_shared()) {
175 return nullptr;
176 }
177 if (_field_cache == nullptr) {
178 assert(!is_java_lang_Object(), "Object has no fields");
179 Arena* arena = CURRENT_ENV->arena();
180 _field_cache = new (arena) ciConstantPoolCache(arena, 5);
181 }
182 return _field_cache;
183 }
184
185 // ------------------------------------------------------------------
186 // ciInstanceKlass::get_canonical_holder
187 //
188 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
189 #ifdef ASSERT
190 if (!(offset >= 0 && offset < layout_helper_size_in_bytes())) {
191 tty->print("*** get_canonical_holder(%d) on ", offset);
192 this->print();
193 tty->print_cr(" ***");
194 };
195 assert(offset >= 0 && offset < layout_helper_size_in_bytes(), "offset must be tame");
196 #endif
197
198 if (offset < instanceOopDesc::base_offset_in_bytes()) {
199 // All header offsets belong properly to java/lang/Object.
200 return CURRENT_ENV->Object_klass();
201 }
202
203 ciInstanceKlass* self = this;
204 assert(self->is_loaded(), "must be loaded to access field info");
205 ciField* field = self->get_field_by_offset(offset, false);
206 if (field != nullptr) {
207 return field->holder();
208 } else {
209 for (;;) {
210 assert(self->is_loaded(), "must be loaded to have size");
211 ciInstanceKlass* super = self->super();
212 if (super == nullptr ||
213 super->nof_nonstatic_fields() == 0 ||
214 super->layout_helper_size_in_bytes() <= offset) {
215 return self;
216 } else {
217 self = super; // return super->get_canonical_holder(offset)
218 }
219 }
220 }
221 }
222
223 // ------------------------------------------------------------------
224 // ciInstanceKlass::is_java_lang_Object
225 //
226 // Is this klass java.lang.Object?
227 bool ciInstanceKlass::is_java_lang_Object() const {
228 return equals(CURRENT_ENV->Object_klass());
229 }
230
231 // ------------------------------------------------------------------
232 // ciInstanceKlass::uses_default_loader
233 bool ciInstanceKlass::uses_default_loader() const {
234 // Note: We do not need to resolve the handle or enter the VM
235 // in order to test null-ness.
236 return _loader == nullptr;
237 }
238
239 // ------------------------------------------------------------------
240
241 /**
242 * Return basic type of boxed value for box klass or T_OBJECT if not.
243 */
244 BasicType ciInstanceKlass::box_klass_type() const {
245 if (uses_default_loader() && is_loaded()) {
246 return vmClasses::box_klass_type(get_Klass());
247 } else {
248 return T_OBJECT;
249 }
250 }
251
252 /**
253 * Is this boxing klass?
254 */
255 bool ciInstanceKlass::is_box_klass() const {
256 return is_java_primitive(box_klass_type());
257 }
258
259 /**
260 * Is this boxed value offset?
261 */
262 bool ciInstanceKlass::is_boxed_value_offset(int offset) const {
263 BasicType bt = box_klass_type();
264 return is_java_primitive(bt) &&
265 (offset == java_lang_boxing_object::value_offset(bt));
266 }
267
268 // ------------------------------------------------------------------
269 // ciInstanceKlass::is_in_package
270 //
271 // Is this klass in the given package?
272 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
273 // To avoid class loader mischief, this test always rejects application classes.
274 if (!uses_default_loader())
275 return false;
276 GUARDED_VM_ENTRY(
277 return is_in_package_impl(packagename, len);
278 )
279 }
280
281 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
282 ASSERT_IN_VM;
283
284 // If packagename contains trailing '/' exclude it from the
285 // prefix-test since we test for it explicitly.
286 if (packagename[len - 1] == '/')
287 len--;
288
289 if (!name()->starts_with(packagename, len))
290 return false;
291
292 // Test if the class name is something like "java/lang".
293 if ((len + 1) > name()->utf8_length())
294 return false;
295
296 // Test for trailing '/'
297 if (name()->char_at(len) != '/')
298 return false;
299
300 // Make sure it's not actually in a subpackage:
301 if (name()->index_of_at(len+1, "/", 1) >= 0)
302 return false;
303
304 return true;
305 }
306
307 // ------------------------------------------------------------------
308 // ciInstanceKlass::print_impl
309 //
310 // Implementation of the print method.
311 void ciInstanceKlass::print_impl(outputStream* st) {
312 ciKlass::print_impl(st);
313 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i(loader()));)
314 if (is_loaded()) {
315 st->print(" initialized=%s finalized=%s subklass=%s size=%d flags=",
316 bool_to_str(is_initialized()),
317 bool_to_str(has_finalizer()),
318 bool_to_str(has_subklass()),
319 layout_helper());
320
321 _flags.print_klass_flags();
322
323 if (_super) {
324 st->print(" super=");
325 _super->print_name();
326 }
327 if (_java_mirror) {
328 st->print(" mirror=PRESENT");
329 }
330 }
331 }
332
333 // ------------------------------------------------------------------
334 // ciInstanceKlass::super
335 //
336 // Get the superklass of this klass.
337 ciInstanceKlass* ciInstanceKlass::super() {
338 assert(is_loaded(), "must be loaded");
339 if (_super == nullptr && !is_java_lang_Object()) {
340 GUARDED_VM_ENTRY(
341 Klass* super_klass = get_instanceKlass()->super();
342 _super = CURRENT_ENV->get_instance_klass(super_klass);
343 )
344 }
345 return _super;
346 }
347
348 // ------------------------------------------------------------------
349 // ciInstanceKlass::java_mirror
350 //
351 // Get the instance of java.lang.Class corresponding to this klass.
352 // Cache it on this->_java_mirror.
353 ciInstance* ciInstanceKlass::java_mirror() {
354 if (is_shared()) {
355 return ciKlass::java_mirror();
356 }
357 if (_java_mirror == nullptr) {
358 _java_mirror = ciKlass::java_mirror();
359 }
360 return _java_mirror;
361 }
362
363 // ------------------------------------------------------------------
364 // ciInstanceKlass::unique_concrete_subklass
365 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
366 if (!is_loaded()) return nullptr; // No change if class is not loaded
367 if (!is_abstract()) return nullptr; // Only applies to abstract classes.
368 if (!has_subklass()) return nullptr; // Must have at least one subklass.
369 VM_ENTRY_MARK;
370 InstanceKlass* ik = get_instanceKlass();
371 Klass* up = ik->up_cast_abstract();
372 assert(up->is_instance_klass(), "must be InstanceKlass");
373 if (ik == up) {
374 return nullptr;
375 }
376 return CURRENT_THREAD_ENV->get_instance_klass(up);
377 }
378
379 // ------------------------------------------------------------------
380 // ciInstanceKlass::has_finalizable_subclass
381 bool ciInstanceKlass::has_finalizable_subclass() {
382 if (!is_loaded()) return true;
383 VM_ENTRY_MARK;
384 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != nullptr;
385 }
386
387 // ------------------------------------------------------------------
388 // ciInstanceKlass::contains_field_offset
389 bool ciInstanceKlass::contains_field_offset(int offset) {
390 VM_ENTRY_MARK;
391 return get_instanceKlass()->contains_field_offset(offset);
392 }
393
394 // ------------------------------------------------------------------
395 // ciInstanceKlass::get_field_by_offset
396 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
397 if (!is_static) {
398 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) {
399 ciField* field = _nonstatic_fields->at(i);
400 int field_off = field->offset_in_bytes();
401 if (field_off == field_offset)
402 return field;
403 }
404 return nullptr;
405 }
406 VM_ENTRY_MARK;
407 InstanceKlass* k = get_instanceKlass();
408 fieldDescriptor fd;
409 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
410 return nullptr;
411 }
412 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
413 return field;
414 }
415
416 // ------------------------------------------------------------------
417 // ciInstanceKlass::get_field_by_name
418 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
419 VM_ENTRY_MARK;
420 InstanceKlass* k = get_instanceKlass();
421 fieldDescriptor fd;
422 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
423 if (def == nullptr) {
424 return nullptr;
425 }
426 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
427 return field;
428 }
429
430
431 // ------------------------------------------------------------------
432 // ciInstanceKlass::compute_nonstatic_fields
433 int ciInstanceKlass::compute_nonstatic_fields() {
434 assert(is_loaded(), "must be loaded");
435
436 if (_nonstatic_fields != nullptr)
437 return _nonstatic_fields->length();
438
439 if (!has_nonstatic_fields()) {
440 Arena* arena = CURRENT_ENV->arena();
441 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, nullptr);
442 return 0;
443 }
444 assert(!is_java_lang_Object(), "bootstrap OK");
445
446 ciInstanceKlass* super = this->super();
447 GrowableArray<ciField*>* super_fields = nullptr;
448 if (super != nullptr && super->has_nonstatic_fields()) {
449 int super_flen = super->nof_nonstatic_fields();
450 super_fields = super->_nonstatic_fields;
451 assert(super_flen == 0 || super_fields != nullptr, "first get nof_fields");
452 }
453
454 GrowableArray<ciField*>* fields = nullptr;
455 GUARDED_VM_ENTRY({
456 fields = compute_nonstatic_fields_impl(super_fields);
457 });
458
459 if (fields == nullptr) {
460 // This can happen if this class (java.lang.Class) has invisible fields.
461 if (super_fields != nullptr) {
462 _nonstatic_fields = super_fields;
463 return super_fields->length();
464 } else {
465 return 0;
466 }
467 }
468
469 int flen = fields->length();
470
471 _nonstatic_fields = fields;
472 return flen;
473 }
474
475 GrowableArray<ciField*>*
476 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
477 super_fields) {
478 ASSERT_IN_VM;
479 Arena* arena = CURRENT_ENV->arena();
480 int flen = 0;
481 GrowableArray<ciField*>* fields = nullptr;
482 InstanceKlass* k = get_instanceKlass();
483 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
484 if (fs.access_flags().is_static()) continue;
485 flen += 1;
486 }
487
488 // allocate the array:
489 if (flen == 0) {
490 return nullptr; // return nothing if none are locally declared
491 }
492 if (super_fields != nullptr) {
493 flen += super_fields->length();
494 }
495 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, nullptr);
496 if (super_fields != nullptr) {
497 fields->appendAll(super_fields);
498 }
499
500 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
501 if (fs.access_flags().is_static()) continue;
502 fieldDescriptor& fd = fs.field_descriptor();
503 ciField* field = new (arena) ciField(&fd);
504 fields->append(field);
505 }
506 assert(fields->length() == flen, "sanity");
507 return fields;
508 }
509
510 bool ciInstanceKlass::compute_injected_fields_helper() {
511 ASSERT_IN_VM;
512 InstanceKlass* k = get_instanceKlass();
513
514 for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
515 if (fs.access_flags().is_static()) continue;
516 return true;
517 }
518 return false;
519 }
520
521 void ciInstanceKlass::compute_injected_fields() {
522 assert(is_loaded(), "must be loaded");
523
524 int has_injected_fields = 0;
525 if (super() != nullptr && super()->has_injected_fields()) {
526 has_injected_fields = 1;
527 } else {
528 GUARDED_VM_ENTRY({
529 has_injected_fields = compute_injected_fields_helper() ? 1 : 0;
530 });
531 }
532 // may be concurrently initialized for shared ciInstanceKlass objects
533 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization");
534 _has_injected_fields = has_injected_fields;
535 }
536
537 bool ciInstanceKlass::has_object_fields() const {
538 GUARDED_VM_ENTRY(
539 return get_instanceKlass()->nonstatic_oop_map_size() > 0;
540 );
541 }
542
543 bool ciInstanceKlass::compute_has_trusted_loader() {
544 ASSERT_IN_VM;
545 oop loader_oop = loader();
546 if (loader_oop == nullptr) {
547 return true; // bootstrap class loader
548 }
549 return java_lang_ClassLoader::is_trusted_loader(loader_oop);
550 }
551
552 // ------------------------------------------------------------------
553 // ciInstanceKlass::find_method
554 //
555 // Find a method in this klass.
556 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
557 VM_ENTRY_MARK;
558 InstanceKlass* k = get_instanceKlass();
559 Symbol* name_sym = name->get_symbol();
560 Symbol* sig_sym= signature->get_symbol();
561
562 Method* m = k->find_method(name_sym, sig_sym);
563 if (m == nullptr) return nullptr;
564
565 return CURRENT_THREAD_ENV->get_method(m);
566 }
567
568 // ------------------------------------------------------------------
569 // ciInstanceKlass::is_leaf_type
570 bool ciInstanceKlass::is_leaf_type() {
571 assert(is_loaded(), "must be loaded");
572 if (is_shared()) {
573 return is_final(); // approximately correct
574 } else {
575 return !has_subklass() && (nof_implementors() == 0);
576 }
577 }
578
579 // ------------------------------------------------------------------
580 // ciInstanceKlass::implementor
581 //
582 // Report an implementor of this interface.
583 // Note that there are various races here, since my copy
584 // of _nof_implementors might be out of date with respect
585 // to results returned by InstanceKlass::implementor.
586 // This is OK, since any dependencies we decide to assert
587 // will be checked later under the Compile_lock.
588 ciInstanceKlass* ciInstanceKlass::implementor() {
589 ciInstanceKlass* impl = _implementor;
590 if (impl == nullptr) {
591 if (is_shared()) {
592 impl = this; // assume a well-known interface never has a unique implementor
593 } else {
594 // Go into the VM to fetch the implementor.
595 VM_ENTRY_MARK;
596 InstanceKlass* ik = get_instanceKlass();
597 Klass* implk = ik->implementor();
598 if (implk != nullptr) {
599 if (implk == ik) {
600 // More than one implementors. Use 'this' in this case.
601 impl = this;
602 } else {
603 impl = CURRENT_THREAD_ENV->get_instance_klass(implk);
604 }
605 }
606 }
607 // Memoize this result.
608 _implementor = impl;
609 }
610 return impl;
611 }
612
613 // Utility class for printing of the contents of the static fields for
614 // use by compilation replay. It only prints out the information that
615 // could be consumed by the compiler, so for primitive types it prints
616 // out the actual value. For Strings it's the actual string value.
617 // For array types it it's first level array size since that's the
618 // only value which statically unchangeable. For all other reference
619 // types it simply prints out the dynamic type.
620
621 class StaticFinalFieldPrinter : public FieldClosure {
622 outputStream* _out;
623 const char* _holder;
624 public:
625 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
626 _out(out),
627 _holder(holder) {
628 }
629 void do_field(fieldDescriptor* fd) {
630 if (fd->is_final() && !fd->has_initial_value()) {
631 ResourceMark rm;
632 oop mirror = fd->field_holder()->java_mirror();
633 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
634 BasicType field_type = fd->field_type();
635 switch (field_type) {
636 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break;
637 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break;
638 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break;
639 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break;
640 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break;
641 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
642 case T_FLOAT: {
643 float f = mirror->float_field(fd->offset());
644 _out->print_cr("%d", *(int*)&f);
645 break;
646 }
647 case T_DOUBLE: {
648 double d = mirror->double_field(fd->offset());
649 _out->print_cr(INT64_FORMAT, *(int64_t*)&d);
650 break;
651 }
652 case T_ARRAY: // fall-through
653 case T_OBJECT: {
654 oop value = mirror->obj_field_acquire(fd->offset());
655 if (value == nullptr) {
656 if (field_type == T_ARRAY) {
657 _out->print("%d", -1);
658 }
659 _out->cr();
660 } else if (value->is_instance()) {
661 assert(field_type == T_OBJECT, "");
662 if (value->is_a(vmClasses::String_klass())) {
663 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
664 _out->print_cr("\"%s\"", (ascii_value != nullptr) ? ascii_value : "");
665 } else {
666 const char* klass_name = value->klass()->name()->as_quoted_ascii();
667 _out->print_cr("%s", klass_name);
668 }
669 } else if (value->is_array()) {
670 typeArrayOop ta = (typeArrayOop)value;
671 _out->print("%d", ta->length());
672 if (value->is_objArray()) {
673 objArrayOop oa = (objArrayOop)value;
674 const char* klass_name = value->klass()->name()->as_quoted_ascii();
675 _out->print(" %s", klass_name);
676 }
677 _out->cr();
678 } else {
679 ShouldNotReachHere();
680 }
681 break;
682 }
683 default:
684 ShouldNotReachHere();
685 }
686 }
687 }
688 };
689
690 const char *ciInstanceKlass::replay_name() const {
691 return CURRENT_ENV->replay_name(get_instanceKlass());
692 }
693
694 void ciInstanceKlass::dump_replay_instanceKlass(outputStream* out, InstanceKlass* ik) {
695 if (ik->is_hidden()) {
696 const char *name = CURRENT_ENV->dyno_name(ik);
697 if (name != nullptr) {
698 out->print_cr("instanceKlass %s # %s", name, ik->name()->as_quoted_ascii());
699 } else {
700 out->print_cr("# instanceKlass %s", ik->name()->as_quoted_ascii());
701 }
702 } else {
703 out->print_cr("instanceKlass %s", ik->name()->as_quoted_ascii());
704 }
705 }
706
707 GrowableArray<ciInstanceKlass*>* ciInstanceKlass::transitive_interfaces() const{
708 if (_transitive_interfaces == nullptr) {
709 const_cast<ciInstanceKlass*>(this)->compute_transitive_interfaces();
710 }
711 return _transitive_interfaces;
712 }
713
714 void ciInstanceKlass::compute_transitive_interfaces() {
715 GUARDED_VM_ENTRY(
716 InstanceKlass* ik = get_instanceKlass();
717 Array<InstanceKlass*>* interfaces = ik->transitive_interfaces();
718 int orig_length = interfaces->length();
719 Arena* arena = CURRENT_ENV->arena();
720 int transitive_interfaces_len = orig_length + (is_interface() ? 1 : 0);
721 GrowableArray<ciInstanceKlass*>* transitive_interfaces = new(arena)GrowableArray<ciInstanceKlass*>(arena, transitive_interfaces_len,
722 0, nullptr);
723 for (int i = 0; i < orig_length; i++) {
724 transitive_interfaces->append(CURRENT_ENV->get_instance_klass(interfaces->at(i)));
725 }
726 if (is_interface()) {
727 transitive_interfaces->append(this);
728 }
729 _transitive_interfaces = transitive_interfaces;
730 );
731 }
732
733 void ciInstanceKlass::dump_replay_data(outputStream* out) {
734 ResourceMark rm;
735
736 InstanceKlass* ik = get_instanceKlass();
737 ConstantPool* cp = ik->constants();
738
739 // Try to record related loaded classes
740 Klass* sub = ik->subklass();
741 while (sub != nullptr) {
742 if (sub->is_instance_klass()) {
743 InstanceKlass *isub = InstanceKlass::cast(sub);
744 dump_replay_instanceKlass(out, isub);
745 }
746 sub = sub->next_sibling();
747 }
748
749 // Dump out the state of the constant pool tags. During replay the
750 // tags will be validated for things which shouldn't change and
751 // classes will be resolved if the tags indicate that they were
752 // resolved at compile time.
753 const char *name = replay_name();
754 out->print("ciInstanceKlass %s %d %d %d", name,
755 is_linked(), is_initialized(), cp->length());
756 for (int index = 1; index < cp->length(); index++) {
757 out->print(" %d", cp->tags()->at(index));
758 }
759 out->cr();
760 if (is_initialized()) {
761 // Dump out the static final fields in case the compilation relies
762 // on their value for correct replay.
763 StaticFinalFieldPrinter sffp(out, name);
764 ik->do_local_static_fields(&sffp);
765 }
766 }
767
768 #ifdef ASSERT
769 bool ciInstanceKlass::debug_final_field_at(int offset) {
770 GUARDED_VM_ENTRY(
771 InstanceKlass* ik = get_instanceKlass();
772 fieldDescriptor fd;
773 if (ik->find_field_from_offset(offset, false, &fd)) {
774 return fd.is_final();
775 }
776 );
777 return false;
778 }
779
780 bool ciInstanceKlass::debug_stable_field_at(int offset) {
781 GUARDED_VM_ENTRY(
782 InstanceKlass* ik = get_instanceKlass();
783 fieldDescriptor fd;
784 if (ik->find_field_from_offset(offset, false, &fd)) {
785 return fd.is_stable();
786 }
787 );
788 return false;
789 }
790 #endif