1 /*
2 * Copyright (c) 1999, 2026, 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 _trust_final_fields = ik->trust_final_fields();
69 _nonstatic_fields = nullptr; // initialized lazily by compute_nonstatic_fields:
70 _has_injected_fields = -1;
71 _implementor = nullptr; // we will fill these lazily
72 _transitive_interfaces = nullptr;
73
74 // Ensure that the metadata wrapped by the ciMetadata is kept alive by GC.
75 // This is primarily useful for metadata which is considered as weak roots
76 // by the GC but need to be strong roots if reachable from a current compilation.
77 // InstanceKlass are created for both weak and strong metadata. Ensuring this metadata
78 // alive covers the cases where there are weak roots without performance cost.
79 oop holder = ik->klass_holder();
80 if (ik->class_loader_data()->has_class_mirror_holder()) {
81 // Though ciInstanceKlass records class loader oop, it's not enough to keep
82 // non-strong hidden classes alive (loader == nullptr). Klass holder should
83 // be used instead. It is enough to record a ciObject, since cached elements are never removed
84 // during ciObjectFactory lifetime. ciObjectFactory itself is created for
85 // every compilation and lives for the whole duration of the compilation.
86 assert(holder != nullptr, "holder of hidden class is the mirror which is never null");
87 (void)CURRENT_ENV->get_object(holder);
88 }
89
90 JavaThread *thread = JavaThread::current();
91 if (ciObjectFactory::is_initialized()) {
92 _loader = JNIHandles::make_local(thread, ik->class_loader());
93 _is_shared = false;
94 } else {
95 Handle h_loader(thread, ik->class_loader());
96 _loader = JNIHandles::make_global(h_loader);
97 _is_shared = true;
98 }
99
100 _has_trusted_loader = compute_has_trusted_loader();
101
102 // Lazy fields get filled in only upon request.
103 _super = nullptr;
104 _java_mirror = nullptr;
105
106 if (is_shared()) {
107 if (k != vmClasses::Object_klass()) {
108 super();
109 }
110 //compute_nonstatic_fields(); // done outside of constructor
111 }
112
113 _field_cache = nullptr;
114 }
115
116 // Version for unloaded classes:
117 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
118 jobject loader)
119 : ciKlass(name, T_OBJECT)
120 {
121 assert(name->char_at(0) != JVM_SIGNATURE_ARRAY, "not an instance klass");
122 _init_state = (InstanceKlass::ClassState)0;
123 _has_nonstatic_fields = false;
124 _nonstatic_fields = nullptr;
125 _has_injected_fields = -1;
126 _is_hidden = false;
127 _is_record = false;
128 _loader = loader;
129 _is_shared = false;
130 _super = nullptr;
131 _java_mirror = nullptr;
132 _field_cache = nullptr;
133 _has_trusted_loader = compute_has_trusted_loader();
134 }
135
136
137
138 // ------------------------------------------------------------------
139 InstanceKlass::ClassState ciInstanceKlass::compute_init_state() {
140 if (_is_shared && is_loaded()) {
141 // Return cached init state of shared klass
142 ciEnv* env = CURRENT_ENV;
143 assert(env->task() != nullptr, "only calls from compilation are expected here");
144 return env->get_cached_init_state(ident());
145 }
146 return _init_state;
147 }
148
149 // ------------------------------------------------------------------
150 // ciInstanceKlass::compute_shared_has_subklass
151 bool ciInstanceKlass::compute_shared_has_subklass() {
152 GUARDED_VM_ENTRY(
153 InstanceKlass* ik = get_instanceKlass();
154 _has_subklass = ik->subklass() != nullptr ? subklass_true : subklass_false;
155 return _has_subklass == subklass_true;
156 )
157 }
158
159 // ------------------------------------------------------------------
160 // ciInstanceKlass::loader
161 oop ciInstanceKlass::loader() {
162 ASSERT_IN_VM;
163 return JNIHandles::resolve(_loader);
164 }
165
166 // ------------------------------------------------------------------
167 // ciInstanceKlass::loader_handle
168 jobject ciInstanceKlass::loader_handle() {
169 return _loader;
170 }
171
172 // ------------------------------------------------------------------
173 // ciInstanceKlass::field_cache
174 //
175 // Get the field cache associated with this klass.
176 ciConstantPoolCache* ciInstanceKlass::field_cache() {
177 if (is_shared()) {
178 return nullptr;
179 }
180 if (_field_cache == nullptr) {
181 assert(!is_java_lang_Object(), "Object has no fields");
182 Arena* arena = CURRENT_ENV->arena();
183 _field_cache = new (arena) ciConstantPoolCache(arena, 5);
184 }
185 return _field_cache;
186 }
187
188 // ------------------------------------------------------------------
189 // ciInstanceKlass::get_canonical_holder
190 //
191 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
192 #ifdef ASSERT
193 if (!(offset >= 0 && offset < layout_helper_size_in_bytes())) {
194 tty->print("*** get_canonical_holder(%d) on ", offset);
195 this->print();
196 tty->print_cr(" ***");
197 };
198 assert(offset >= 0 && offset < layout_helper_size_in_bytes(), "offset must be tame");
199 #endif
200
201 if (offset < instanceOopDesc::base_offset_in_bytes()) {
202 // All header offsets belong properly to java/lang/Object.
203 return CURRENT_ENV->Object_klass();
204 }
205
206 ciInstanceKlass* self = this;
207 assert(self->is_loaded(), "must be loaded to access field info");
208 ciField* field = self->get_field_by_offset(offset, false);
209 if (field != nullptr) {
210 return field->holder();
211 } else {
212 for (;;) {
213 assert(self->is_loaded(), "must be loaded to have size");
214 ciInstanceKlass* super = self->super();
215 if (super == nullptr ||
216 super->nof_nonstatic_fields() == 0 ||
217 super->layout_helper_size_in_bytes() <= offset) {
218 return self;
219 } else {
220 self = super; // return super->get_canonical_holder(offset)
221 }
222 }
223 }
224 }
225
226 // ------------------------------------------------------------------
227 // ciInstanceKlass::is_java_lang_Object
228 //
229 // Is this klass java.lang.Object?
230 bool ciInstanceKlass::is_java_lang_Object() const {
231 return equals(CURRENT_ENV->Object_klass());
232 }
233
234 // ------------------------------------------------------------------
235 // ciInstanceKlass::uses_default_loader
236 bool ciInstanceKlass::uses_default_loader() const {
237 // Note: We do not need to resolve the handle or enter the VM
238 // in order to test null-ness.
239 return _loader == nullptr;
240 }
241
242 // ------------------------------------------------------------------
243
244 /**
245 * Return basic type of boxed value for box klass or T_OBJECT if not.
246 */
247 BasicType ciInstanceKlass::box_klass_type() const {
248 if (uses_default_loader() && is_loaded()) {
249 return vmClasses::box_klass_type(get_Klass());
250 } else {
251 return T_OBJECT;
252 }
253 }
254
255 /**
256 * Is this boxing klass?
257 */
258 bool ciInstanceKlass::is_box_klass() const {
259 return is_java_primitive(box_klass_type());
260 }
261
262 /**
263 * Is this boxed value offset?
264 */
265 bool ciInstanceKlass::is_boxed_value_offset(int offset) const {
266 BasicType bt = box_klass_type();
267 return is_java_primitive(bt) &&
268 (offset == java_lang_boxing_object::value_offset(bt));
269 }
270
271 // ------------------------------------------------------------------
272 // ciInstanceKlass::is_in_package
273 //
274 // Is this klass in the given package?
275 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
276 // To avoid class loader mischief, this test always rejects application classes.
277 if (!uses_default_loader())
278 return false;
279 GUARDED_VM_ENTRY(
280 return is_in_package_impl(packagename, len);
281 )
282 }
283
284 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
285 ASSERT_IN_VM;
286
287 // If packagename contains trailing '/' exclude it from the
288 // prefix-test since we test for it explicitly.
289 if (packagename[len - 1] == '/')
290 len--;
291
292 if (!name()->starts_with(packagename, len))
293 return false;
294
295 // Test if the class name is something like "java/lang".
296 if ((len + 1) > name()->utf8_length())
297 return false;
298
299 // Test for trailing '/'
300 if (name()->char_at(len) != '/')
301 return false;
302
303 // Make sure it's not actually in a subpackage:
304 if (name()->index_of_at(len+1, "/", 1) >= 0)
305 return false;
306
307 return true;
308 }
309
310 // ------------------------------------------------------------------
311 // ciInstanceKlass::print_impl
312 //
313 // Implementation of the print method.
314 void ciInstanceKlass::print_impl(outputStream* st) {
315 ciKlass::print_impl(st);
316 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i(loader()));)
317 if (is_loaded()) {
318 st->print(" initialized=%s finalized=%s subklass=%s size=%d flags=",
319 bool_to_str(is_initialized()),
320 bool_to_str(has_finalizer()),
321 bool_to_str(has_subklass()),
322 layout_helper());
323
324 _flags.print_klass_flags(st);
325
326 if (_super) {
327 st->print(" super=");
328 _super->print_name_on(st);
329 }
330 if (_java_mirror) {
331 st->print(" mirror=PRESENT");
332 }
333 }
334 }
335
336 // ------------------------------------------------------------------
337 // ciInstanceKlass::super
338 //
339 // Get the superklass of this klass.
340 ciInstanceKlass* ciInstanceKlass::super() {
341 assert(is_loaded(), "must be loaded");
342 if (_super == nullptr && !is_java_lang_Object()) {
343 GUARDED_VM_ENTRY(
344 Klass* super_klass = get_instanceKlass()->super();
345 _super = CURRENT_ENV->get_instance_klass(super_klass);
346 )
347 }
348 return _super;
349 }
350
351 // ------------------------------------------------------------------
352 // ciInstanceKlass::java_mirror
353 //
354 // Get the instance of java.lang.Class corresponding to this klass.
355 // Cache it on this->_java_mirror.
356 ciInstance* ciInstanceKlass::java_mirror() {
357 if (is_shared()) {
358 return ciKlass::java_mirror();
359 }
360 if (_java_mirror == nullptr) {
361 _java_mirror = ciKlass::java_mirror();
362 }
363 return _java_mirror;
364 }
365
366 // ------------------------------------------------------------------
367 // ciInstanceKlass::unique_concrete_subklass
368 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
369 if (!is_loaded()) return nullptr; // No change if class is not loaded
370 if (!is_abstract()) return nullptr; // Only applies to abstract classes.
371 if (!has_subklass()) return nullptr; // Must have at least one subklass.
372 VM_ENTRY_MARK;
373 InstanceKlass* ik = get_instanceKlass();
374 Klass* up = ik->up_cast_abstract();
375 assert(up->is_instance_klass(), "must be InstanceKlass");
376 if (ik == up) {
377 return nullptr;
378 }
379 return CURRENT_THREAD_ENV->get_instance_klass(up);
380 }
381
382 // ------------------------------------------------------------------
383 // ciInstanceKlass::has_finalizable_subclass
384 bool ciInstanceKlass::has_finalizable_subclass() {
385 if (!is_loaded()) return true;
386 VM_ENTRY_MARK;
387 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != nullptr;
388 }
389
390 // ------------------------------------------------------------------
391 // ciInstanceKlass::contains_field_offset
392 bool ciInstanceKlass::contains_field_offset(int offset) {
393 VM_ENTRY_MARK;
394 return get_instanceKlass()->contains_field_offset(offset);
395 }
396
397 ciField* ciInstanceKlass::get_nonstatic_field_by_offset(const int field_offset) {
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
407 // ------------------------------------------------------------------
408 // ciInstanceKlass::get_field_by_offset
409 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
410 if (!is_static) {
411 return get_nonstatic_field_by_offset(field_offset);
412 }
413 VM_ENTRY_MARK;
414 InstanceKlass* k = get_instanceKlass();
415 fieldDescriptor fd;
416 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
417 return nullptr;
418 }
419 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
420 return field;
421 }
422
423 // ------------------------------------------------------------------
424 // ciInstanceKlass::get_field_by_name
425 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
426 VM_ENTRY_MARK;
427 InstanceKlass* k = get_instanceKlass();
428 fieldDescriptor fd;
429 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
430 if (def == nullptr) {
431 return nullptr;
432 }
433 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
434 return field;
435 }
436
437 // This is essentially a shortcut for:
438 // get_field_by_offset(field_offset, is_static)->layout_type()
439 // except this does not require allocating memory for a new ciField
440 BasicType ciInstanceKlass::get_field_type_by_offset(const int field_offset, const bool is_static) {
441 if (!is_static) {
442 ciField* field = get_nonstatic_field_by_offset(field_offset);
443 return field != nullptr ? field->layout_type() : T_ILLEGAL;
444 }
445
446 // Avoid allocating a new ciField by obtaining the field type directly
447 VM_ENTRY_MARK;
448 InstanceKlass* k = get_instanceKlass();
449 fieldDescriptor fd;
450 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
451 return T_ILLEGAL;
452 }
453
454 // Reproduce the behavior of ciField::layout_type
455 BasicType field_type = fd.field_type();
456 if (is_reference_type(field_type)) {
457 return T_OBJECT;
458 }
459 return type2field[make(field_type)->basic_type()];
460 }
461
462 // ------------------------------------------------------------------
463 // ciInstanceKlass::compute_nonstatic_fields
464 int ciInstanceKlass::compute_nonstatic_fields() {
465 assert(is_loaded(), "must be loaded");
466
467 if (_nonstatic_fields != nullptr)
468 return _nonstatic_fields->length();
469
470 if (!has_nonstatic_fields()) {
471 Arena* arena = CURRENT_ENV->arena();
472 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, nullptr);
473 return 0;
474 }
475 assert(!is_java_lang_Object(), "bootstrap OK");
476
477 ciInstanceKlass* super = this->super();
478 GrowableArray<ciField*>* super_fields = nullptr;
479 if (super != nullptr && super->has_nonstatic_fields()) {
480 int super_flen = super->nof_nonstatic_fields();
481 super_fields = super->_nonstatic_fields;
482 assert(super_flen == 0 || super_fields != nullptr, "first get nof_fields");
483 }
484
485 GrowableArray<ciField*>* fields = nullptr;
486 GUARDED_VM_ENTRY({
487 fields = compute_nonstatic_fields_impl(super_fields);
488 });
489
490 if (fields == nullptr) {
491 // This can happen if this class (java.lang.Class) has invisible fields.
492 if (super_fields != nullptr) {
493 _nonstatic_fields = super_fields;
494 return super_fields->length();
495 } else {
496 return 0;
497 }
498 }
499
500 int flen = fields->length();
501
502 _nonstatic_fields = fields;
503 return flen;
504 }
505
506 GrowableArray<ciField*>*
507 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
508 super_fields) {
509 ASSERT_IN_VM;
510 Arena* arena = CURRENT_ENV->arena();
511 int flen = 0;
512 GrowableArray<ciField*>* fields = nullptr;
513 InstanceKlass* k = get_instanceKlass();
514 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
515 if (fs.access_flags().is_static()) continue;
516 flen += 1;
517 }
518
519 // allocate the array:
520 if (flen == 0) {
521 return nullptr; // return nothing if none are locally declared
522 }
523 if (super_fields != nullptr) {
524 flen += super_fields->length();
525 }
526 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, nullptr);
527 if (super_fields != nullptr) {
528 fields->appendAll(super_fields);
529 }
530
531 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
532 if (fs.access_flags().is_static()) continue;
533 fieldDescriptor& fd = fs.field_descriptor();
534 ciField* field = new (arena) ciField(&fd);
535 fields->append(field);
536 }
537 assert(fields->length() == flen, "sanity");
538 return fields;
539 }
540
541 bool ciInstanceKlass::compute_injected_fields_helper() {
542 ASSERT_IN_VM;
543 InstanceKlass* k = get_instanceKlass();
544
545 for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
546 if (fs.access_flags().is_static()) continue;
547 return true;
548 }
549 return false;
550 }
551
552 void ciInstanceKlass::compute_injected_fields() {
553 assert(is_loaded(), "must be loaded");
554
555 int has_injected_fields = 0;
556 if (super() != nullptr && super()->has_injected_fields()) {
557 has_injected_fields = 1;
558 } else {
559 GUARDED_VM_ENTRY({
560 has_injected_fields = compute_injected_fields_helper() ? 1 : 0;
561 });
562 }
563 // may be concurrently initialized for shared ciInstanceKlass objects
564 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization");
565 _has_injected_fields = has_injected_fields;
566 }
567
568 bool ciInstanceKlass::has_object_fields() const {
569 GUARDED_VM_ENTRY(
570 return get_instanceKlass()->nonstatic_oop_map_size() > 0;
571 );
572 }
573
574 bool ciInstanceKlass::compute_has_trusted_loader() {
575 ASSERT_IN_VM;
576 oop loader_oop = loader();
577 if (loader_oop == nullptr) {
578 return true; // bootstrap class loader
579 }
580 return java_lang_ClassLoader::is_trusted_loader(loader_oop);
581 }
582
583 bool ciInstanceKlass::has_class_initializer() {
584 VM_ENTRY_MARK;
585 return get_instanceKlass()->class_initializer() != nullptr;
586 }
587
588 // ------------------------------------------------------------------
589 // ciInstanceKlass::find_method
590 //
591 // Find a method in this klass.
592 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
593 VM_ENTRY_MARK;
594 InstanceKlass* k = get_instanceKlass();
595 Symbol* name_sym = name->get_symbol();
596 Symbol* sig_sym= signature->get_symbol();
597
598 Method* m = k->find_method(name_sym, sig_sym);
599 if (m == nullptr) return nullptr;
600
601 return CURRENT_THREAD_ENV->get_method(m);
602 }
603
604 // ------------------------------------------------------------------
605 // ciInstanceKlass::is_leaf_type
606 bool ciInstanceKlass::is_leaf_type() {
607 assert(is_loaded(), "must be loaded");
608 if (is_shared()) {
609 return is_final(); // approximately correct
610 } else {
611 return !has_subklass() && (!is_interface() || nof_implementors() == 0);
612 }
613 }
614
615 // ------------------------------------------------------------------
616 // ciInstanceKlass::implementor
617 //
618 // Report an implementor of this interface.
619 // Note that there are various races here, since my copy
620 // of _nof_implementors might be out of date with respect
621 // to results returned by InstanceKlass::implementor.
622 // This is OK, since any dependencies we decide to assert
623 // will be checked later under the Compile_lock.
624 ciInstanceKlass* ciInstanceKlass::implementor() {
625 assert(is_interface(), "required");
626 ciInstanceKlass* impl = _implementor;
627 if (impl == nullptr) {
628 if (is_shared()) {
629 impl = this; // assume a well-known interface never has a unique implementor
630 } else {
631 // Go into the VM to fetch the implementor.
632 VM_ENTRY_MARK;
633 InstanceKlass* ik = get_instanceKlass();
634 Klass* implk = ik->implementor();
635 if (implk != nullptr) {
636 if (implk == ik) {
637 // More than one implementors. Use 'this' in this case.
638 impl = this;
639 } else {
640 impl = CURRENT_THREAD_ENV->get_instance_klass(implk);
641 }
642 }
643 }
644 // Memoize this result.
645 _implementor = impl;
646 }
647 return impl;
648 }
649
650 // Utility class for printing of the contents of the static fields for
651 // use by compilation replay. It only prints out the information that
652 // could be consumed by the compiler, so for primitive types it prints
653 // out the actual value. For Strings it's the actual string value.
654 // For array types it it's first level array size since that's the
655 // only value which statically unchangeable. For all other reference
656 // types it simply prints out the dynamic type.
657
658 class StaticFinalFieldPrinter : public FieldClosure {
659 outputStream* _out;
660 const char* _holder;
661 public:
662 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
663 _out(out),
664 _holder(holder) {
665 }
666 void do_field(fieldDescriptor* fd) {
667 if (fd->is_final() && !fd->has_initial_value()) {
668 ResourceMark rm;
669 oop mirror = fd->field_holder()->java_mirror();
670 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
671 BasicType field_type = fd->field_type();
672 switch (field_type) {
673 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break;
674 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break;
675 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break;
676 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break;
677 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break;
678 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
679 case T_FLOAT: {
680 float f = mirror->float_field(fd->offset());
681 _out->print_cr("%d", *(int*)&f);
682 break;
683 }
684 case T_DOUBLE: {
685 double d = mirror->double_field(fd->offset());
686 _out->print_cr(INT64_FORMAT, *(int64_t*)&d);
687 break;
688 }
689 case T_ARRAY: // fall-through
690 case T_OBJECT: {
691 oop value = mirror->obj_field_acquire(fd->offset());
692 if (value == nullptr) {
693 if (field_type == T_ARRAY) {
694 _out->print("%d", -1);
695 }
696 _out->cr();
697 } else if (value->is_instance()) {
698 assert(field_type == T_OBJECT, "");
699 if (value->is_a(vmClasses::String_klass())) {
700 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
701 _out->print_cr("\"%s\"", (ascii_value != nullptr) ? ascii_value : "");
702 } else {
703 const char* klass_name = value->klass()->name()->as_quoted_ascii();
704 _out->print_cr("%s", klass_name);
705 }
706 } else if (value->is_array()) {
707 typeArrayOop ta = (typeArrayOop)value;
708 _out->print("%d", ta->length());
709 if (value->is_objArray()) {
710 objArrayOop oa = (objArrayOop)value;
711 const char* klass_name = value->klass()->name()->as_quoted_ascii();
712 _out->print(" %s", klass_name);
713 }
714 _out->cr();
715 } else {
716 ShouldNotReachHere();
717 }
718 break;
719 }
720 default:
721 ShouldNotReachHere();
722 }
723 }
724 }
725 };
726
727 const char *ciInstanceKlass::replay_name() const {
728 return CURRENT_ENV->replay_name(get_instanceKlass());
729 }
730
731 void ciInstanceKlass::dump_replay_instanceKlass(outputStream* out, InstanceKlass* ik) {
732 if (ik->is_hidden()) {
733 const char *name = CURRENT_ENV->dyno_name(ik);
734 if (name != nullptr) {
735 out->print_cr("instanceKlass %s # %s", name, ik->name()->as_quoted_ascii());
736 } else {
737 out->print_cr("# instanceKlass %s", ik->name()->as_quoted_ascii());
738 }
739 } else {
740 out->print_cr("instanceKlass %s", ik->name()->as_quoted_ascii());
741 }
742 }
743
744 GrowableArray<ciInstanceKlass*>* ciInstanceKlass::transitive_interfaces() const{
745 if (_transitive_interfaces == nullptr) {
746 const_cast<ciInstanceKlass*>(this)->compute_transitive_interfaces();
747 }
748 return _transitive_interfaces;
749 }
750
751 void ciInstanceKlass::compute_transitive_interfaces() {
752 GUARDED_VM_ENTRY(
753 InstanceKlass* ik = get_instanceKlass();
754 Array<InstanceKlass*>* interfaces = ik->transitive_interfaces();
755 int orig_length = interfaces->length();
756 Arena* arena = CURRENT_ENV->arena();
757 int transitive_interfaces_len = orig_length + (is_interface() ? 1 : 0);
758 GrowableArray<ciInstanceKlass*>* transitive_interfaces = new(arena)GrowableArray<ciInstanceKlass*>(arena, transitive_interfaces_len,
759 0, nullptr);
760 for (int i = 0; i < orig_length; i++) {
761 transitive_interfaces->append(CURRENT_ENV->get_instance_klass(interfaces->at(i)));
762 }
763 if (is_interface()) {
764 transitive_interfaces->append(this);
765 }
766 _transitive_interfaces = transitive_interfaces;
767 );
768 }
769
770 void ciInstanceKlass::dump_replay_data(outputStream* out) {
771 ResourceMark rm;
772
773 InstanceKlass* ik = get_instanceKlass();
774 ConstantPool* cp = ik->constants();
775
776 // Try to record related loaded classes
777 Klass* sub = ik->subklass();
778 while (sub != nullptr) {
779 if (sub->is_instance_klass()) {
780 InstanceKlass *isub = InstanceKlass::cast(sub);
781 dump_replay_instanceKlass(out, isub);
782 }
783 sub = sub->next_sibling();
784 }
785
786 // Dump out the state of the constant pool tags. During replay the
787 // tags will be validated for things which shouldn't change and
788 // classes will be resolved if the tags indicate that they were
789 // resolved at compile time.
790 const char *name = replay_name();
791 out->print("ciInstanceKlass %s %d %d %d", name,
792 is_linked(), is_initialized(), cp->length());
793 for (int index = 1; index < cp->length(); index++) {
794 out->print(" %d", cp->tags()->at(index));
795 }
796 out->cr();
797 if (is_initialized()) {
798 // Dump out the static final fields in case the compilation relies
799 // on their value for correct replay.
800 StaticFinalFieldPrinter sffp(out, name);
801 ik->do_local_static_fields(&sffp);
802 }
803 }
804
805 #ifdef ASSERT
806 bool ciInstanceKlass::debug_final_field_at(int offset) {
807 GUARDED_VM_ENTRY(
808 InstanceKlass* ik = get_instanceKlass();
809 fieldDescriptor fd;
810 if (ik->find_field_from_offset(offset, false, &fd)) {
811 return fd.is_final();
812 }
813 );
814 return false;
815 }
816
817 bool ciInstanceKlass::debug_stable_field_at(int offset) {
818 GUARDED_VM_ENTRY(
819 InstanceKlass* ik = get_instanceKlass();
820 fieldDescriptor fd;
821 if (ik->find_field_from_offset(offset, false, &fd)) {
822 return fd.is_stable();
823 }
824 );
825 return false;
826 }
827 #endif