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
57 InstanceKlass* ik = get_instanceKlass();
58
59 #ifdef ASSERT
60 if (!ik->is_loaded()) {
61 ResourceMark rm;
62 ik->print_on(tty);
63 assert(false, "must be at least loaded: %s", ik->name()->as_C_string());
64 }
65 #endif // ASSERT
66
67 AccessFlags access_flags = ik->access_flags();
68 _flags = ciFlags(access_flags);
69 _has_finalizer = ik->has_finalizer();
70 _has_subklass = flags().is_final() ? subklass_false : subklass_unknown;
71 _init_state = compute_init_state(ik); // _init_state
72 _has_nonstatic_fields = ik->has_nonstatic_fields();
73 _has_nonstatic_concrete_methods = ik->has_nonstatic_concrete_methods();
74 _is_hidden = ik->is_hidden();
75 _is_record = ik->is_record();
76 _nonstatic_fields = nullptr; // initialized lazily by compute_nonstatic_fields:
77 _has_injected_fields = -1;
78 _implementor = nullptr; // we will fill these lazily
79 _transitive_interfaces = nullptr;
80
81 // Ensure that the metadata wrapped by the ciMetadata is kept alive by GC.
82 // This is primarily useful for metadata which is considered as weak roots
83 // by the GC but need to be strong roots if reachable from a current compilation.
84 // InstanceKlass are created for both weak and strong metadata. Ensuring this metadata
85 // alive covers the cases where there are weak roots without performance cost.
86 oop holder = ik->klass_holder();
87 if (ik->class_loader_data()->has_class_mirror_holder()) {
88 // Though ciInstanceKlass records class loader oop, it's not enough to keep
89 // non-strong hidden classes alive (loader == nullptr). Klass holder should
90 // be used instead. It is enough to record a ciObject, since cached elements are never removed
91 // during ciObjectFactory lifetime. ciObjectFactory itself is created for
92 // every compilation and lives for the whole duration of the compilation.
93 assert(holder != nullptr, "holder of hidden class is the mirror which is never null");
94 (void)CURRENT_ENV->get_object(holder);
95 }
96
97 JavaThread *thread = JavaThread::current();
98 if (ciObjectFactory::is_initialized()) {
99 _loader = JNIHandles::make_local(thread, ik->class_loader());
100 _is_shared = false;
101 } else {
102 Handle h_loader(thread, ik->class_loader());
103 _loader = JNIHandles::make_global(h_loader);
104 _is_shared = true;
105 }
106
107 _has_trusted_loader = compute_has_trusted_loader();
108
109 // Lazy fields get filled in only upon request.
110 _super = nullptr;
111 _java_mirror = nullptr;
112
113 if (is_shared()) {
114 if (k != vmClasses::Object_klass()) {
115 super();
116 }
117 //compute_nonstatic_fields(); // done outside of constructor
118 }
119
120 _field_cache = nullptr;
121 }
122
123 // Version for unloaded classes:
124 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
125 jobject loader)
126 : ciKlass(name, T_OBJECT)
127 {
128 assert(name->char_at(0) != JVM_SIGNATURE_ARRAY, "not an instance klass");
129 _init_state = (InstanceKlass::ClassState)0;
130 _has_nonstatic_fields = false;
131 _nonstatic_fields = nullptr;
132 _has_injected_fields = -1;
133 _is_hidden = false;
134 _is_record = false;
135 _loader = loader;
136 _is_shared = false;
137 _super = nullptr;
138 _java_mirror = nullptr;
139 _field_cache = nullptr;
140 _has_trusted_loader = compute_has_trusted_loader();
141 }
142
143
144
145 // ------------------------------------------------------------------
146 // ciInstanceKlass::compute_shared_is_initialized
147 void ciInstanceKlass::compute_shared_init_state() {
148 GUARDED_VM_ENTRY(
149 InstanceKlass* ik = get_instanceKlass();
150 _init_state = compute_init_state(ik);
151 )
152 }
153
154 InstanceKlass::ClassState ciInstanceKlass::compute_init_state(InstanceKlass* ik) {
155 ASSERT_IN_VM;
156 ciEnv* env = CURRENT_ENV;
157 if (env != nullptr && env->is_precompiled()) {
158 return env->compute_init_state_for_precompiled(ik);
159 } else {
160 return ik->init_state();
161 }
162 }
163
164 // ------------------------------------------------------------------
165 // ciInstanceKlass::compute_shared_has_subklass
166 bool ciInstanceKlass::compute_shared_has_subklass() {
167 GUARDED_VM_ENTRY(
168 InstanceKlass* ik = get_instanceKlass();
169 _has_subklass = ik->subklass() != nullptr ? subklass_true : subklass_false;
170 return _has_subklass == subklass_true;
171 )
172 }
173
174 // ------------------------------------------------------------------
175 // ciInstanceKlass::loader
176 oop ciInstanceKlass::loader() {
177 ASSERT_IN_VM;
178 return JNIHandles::resolve(_loader);
179 }
180
181 // ------------------------------------------------------------------
182 // ciInstanceKlass::loader_handle
183 jobject ciInstanceKlass::loader_handle() {
184 return _loader;
185 }
186
187 // ------------------------------------------------------------------
188 // ciInstanceKlass::field_cache
189 //
190 // Get the field cache associated with this klass.
191 ciConstantPoolCache* ciInstanceKlass::field_cache() {
192 if (is_shared()) {
193 return nullptr;
194 }
195 if (_field_cache == nullptr) {
196 assert(!is_java_lang_Object(), "Object has no fields");
197 Arena* arena = CURRENT_ENV->arena();
198 _field_cache = new (arena) ciConstantPoolCache(arena, 5);
199 }
200 return _field_cache;
201 }
202
203 // ------------------------------------------------------------------
204 // ciInstanceKlass::get_canonical_holder
205 //
206 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
207 #ifdef ASSERT
208 if (!(offset >= 0 && offset < layout_helper_size_in_bytes())) {
209 tty->print("*** get_canonical_holder(%d) on ", offset);
210 this->print();
211 tty->print_cr(" ***");
212 };
213 assert(offset >= 0 && offset < layout_helper_size_in_bytes(), "offset must be tame");
214 #endif
215
216 if (offset < instanceOopDesc::base_offset_in_bytes()) {
217 // All header offsets belong properly to java/lang/Object.
218 return CURRENT_ENV->Object_klass();
219 }
220
221 ciInstanceKlass* self = this;
222 assert(self->is_loaded(), "must be loaded to access field info");
223 ciField* field = self->get_field_by_offset(offset, false);
224 if (field != nullptr) {
225 return field->holder();
226 } else {
227 for (;;) {
228 assert(self->is_loaded(), "must be loaded to have size");
229 ciInstanceKlass* super = self->super();
230 if (super == nullptr ||
231 super->nof_nonstatic_fields() == 0 ||
232 super->layout_helper_size_in_bytes() <= offset) {
233 return self;
234 } else {
235 self = super; // return super->get_canonical_holder(offset)
236 }
237 }
238 }
239 }
240
241 // ------------------------------------------------------------------
242 // ciInstanceKlass::is_java_lang_Object
243 //
244 // Is this klass java.lang.Object?
245 bool ciInstanceKlass::is_java_lang_Object() const {
246 return equals(CURRENT_ENV->Object_klass());
247 }
248
249 // ------------------------------------------------------------------
250 // ciInstanceKlass::uses_default_loader
251 bool ciInstanceKlass::uses_default_loader() const {
252 // Note: We do not need to resolve the handle or enter the VM
253 // in order to test null-ness.
254 return _loader == nullptr;
255 }
256
257 // ------------------------------------------------------------------
258
259 /**
260 * Return basic type of boxed value for box klass or T_OBJECT if not.
261 */
262 BasicType ciInstanceKlass::box_klass_type() const {
263 if (uses_default_loader() && is_loaded()) {
264 return vmClasses::box_klass_type(get_Klass());
265 } else {
266 return T_OBJECT;
267 }
268 }
269
270 /**
271 * Is this boxing klass?
272 */
273 bool ciInstanceKlass::is_box_klass() const {
274 return is_java_primitive(box_klass_type());
275 }
276
277 /**
278 * Is this boxed value offset?
279 */
280 bool ciInstanceKlass::is_boxed_value_offset(int offset) const {
281 BasicType bt = box_klass_type();
282 return is_java_primitive(bt) &&
283 (offset == java_lang_boxing_object::value_offset(bt));
284 }
285
286 // ------------------------------------------------------------------
287 // ciInstanceKlass::is_in_package
288 //
289 // Is this klass in the given package?
290 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
291 // To avoid class loader mischief, this test always rejects application classes.
292 if (!uses_default_loader())
293 return false;
294 GUARDED_VM_ENTRY(
295 return is_in_package_impl(packagename, len);
296 )
297 }
298
299 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
300 ASSERT_IN_VM;
301
302 // If packagename contains trailing '/' exclude it from the
303 // prefix-test since we test for it explicitly.
304 if (packagename[len - 1] == '/')
305 len--;
306
307 if (!name()->starts_with(packagename, len))
308 return false;
309
310 // Test if the class name is something like "java/lang".
311 if ((len + 1) > name()->utf8_length())
312 return false;
313
314 // Test for trailing '/'
315 if (name()->char_at(len) != '/')
316 return false;
317
318 // Make sure it's not actually in a subpackage:
319 if (name()->index_of_at(len+1, "/", 1) >= 0)
320 return false;
321
322 return true;
323 }
324
325 // ------------------------------------------------------------------
326 // ciInstanceKlass::print_impl
327 //
328 // Implementation of the print method.
329 void ciInstanceKlass::print_impl(outputStream* st) {
330 ciKlass::print_impl(st);
331 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i(loader()));)
332 if (is_loaded()) {
333 st->print(" initialized=%s finalized=%s subklass=%s size=%d flags=",
334 bool_to_str(is_initialized()),
335 bool_to_str(has_finalizer()),
336 bool_to_str(has_subklass()),
337 layout_helper());
338
339 _flags.print_klass_flags(st);
340
341 if (_super) {
342 st->print(" super=");
343 _super->print_name_on(st);
344 }
345 if (_java_mirror) {
346 st->print(" mirror=PRESENT");
347 }
348 }
349 }
350
351 // ------------------------------------------------------------------
352 // ciInstanceKlass::super
353 //
354 // Get the superklass of this klass.
355 ciInstanceKlass* ciInstanceKlass::super() {
356 assert(is_loaded(), "must be loaded");
357 if (_super == nullptr && !is_java_lang_Object()) {
358 GUARDED_VM_ENTRY(
359 Klass* super_klass = get_instanceKlass()->super();
360 _super = CURRENT_ENV->get_instance_klass(super_klass);
361 )
362 }
363 return _super;
364 }
365
366 // ------------------------------------------------------------------
367 // ciInstanceKlass::java_mirror
368 //
369 // Get the instance of java.lang.Class corresponding to this klass.
370 // Cache it on this->_java_mirror.
371 ciInstance* ciInstanceKlass::java_mirror() {
372 if (is_shared()) {
373 return ciKlass::java_mirror();
374 }
375 if (_java_mirror == nullptr) {
376 _java_mirror = ciKlass::java_mirror();
377 }
378 return _java_mirror;
379 }
380
381 // ------------------------------------------------------------------
382 // ciInstanceKlass::unique_concrete_subklass
383 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
384 if (!is_loaded()) return nullptr; // No change if class is not loaded
385 if (!is_abstract()) return nullptr; // Only applies to abstract classes.
386 if (!has_subklass()) return nullptr; // Must have at least one subklass.
387 VM_ENTRY_MARK;
388 InstanceKlass* ik = get_instanceKlass();
389 Klass* up = ik->up_cast_abstract();
390 assert(up->is_instance_klass(), "must be InstanceKlass");
391 if (ik == up) {
392 return nullptr;
393 }
394 return CURRENT_THREAD_ENV->get_instance_klass(up);
395 }
396
397 // ------------------------------------------------------------------
398 // ciInstanceKlass::has_finalizable_subclass
399 bool ciInstanceKlass::has_finalizable_subclass() {
400 if (!is_loaded()) return true;
401 VM_ENTRY_MARK;
402 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != nullptr;
403 }
404
405 // ------------------------------------------------------------------
406 // ciInstanceKlass::contains_field_offset
407 bool ciInstanceKlass::contains_field_offset(int offset) {
408 VM_ENTRY_MARK;
409 return get_instanceKlass()->contains_field_offset(offset);
410 }
411
412 // ------------------------------------------------------------------
413 // ciInstanceKlass::get_field_by_offset
414 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
415 if (!is_static) {
416 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) {
417 ciField* field = _nonstatic_fields->at(i);
418 int field_off = field->offset_in_bytes();
419 if (field_off == field_offset)
420 return field;
421 }
422 return nullptr;
423 }
424 VM_ENTRY_MARK;
425 InstanceKlass* k = get_instanceKlass();
426 fieldDescriptor fd;
427 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
428 return nullptr;
429 }
430 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
431 return field;
432 }
433
434 // ------------------------------------------------------------------
435 // ciInstanceKlass::get_field_by_name
436 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
437 VM_ENTRY_MARK;
438 InstanceKlass* k = get_instanceKlass();
439 fieldDescriptor fd;
440 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
441 if (def == nullptr) {
442 return nullptr;
443 }
444 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
445 return field;
446 }
447
448
449 // ------------------------------------------------------------------
450 // ciInstanceKlass::compute_nonstatic_fields
451 int ciInstanceKlass::compute_nonstatic_fields() {
452 assert(is_loaded(), "must be loaded");
453
454 if (_nonstatic_fields != nullptr)
455 return _nonstatic_fields->length();
456
457 if (!has_nonstatic_fields()) {
458 Arena* arena = CURRENT_ENV->arena();
459 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, nullptr);
460 return 0;
461 }
462 assert(!is_java_lang_Object(), "bootstrap OK");
463
464 ciInstanceKlass* super = this->super();
465 GrowableArray<ciField*>* super_fields = nullptr;
466 if (super != nullptr && super->has_nonstatic_fields()) {
467 int super_flen = super->nof_nonstatic_fields();
468 super_fields = super->_nonstatic_fields;
469 assert(super_flen == 0 || super_fields != nullptr, "first get nof_fields");
470 }
471
472 GrowableArray<ciField*>* fields = nullptr;
473 GUARDED_VM_ENTRY({
474 fields = compute_nonstatic_fields_impl(super_fields);
475 });
476
477 if (fields == nullptr) {
478 // This can happen if this class (java.lang.Class) has invisible fields.
479 if (super_fields != nullptr) {
480 _nonstatic_fields = super_fields;
481 return super_fields->length();
482 } else {
483 return 0;
484 }
485 }
486
487 int flen = fields->length();
488
489 _nonstatic_fields = fields;
490 return flen;
491 }
492
493 GrowableArray<ciField*>*
494 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
495 super_fields) {
496 ASSERT_IN_VM;
497 Arena* arena = CURRENT_ENV->arena();
498 int flen = 0;
499 GrowableArray<ciField*>* fields = nullptr;
500 InstanceKlass* k = get_instanceKlass();
501 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
502 if (fs.access_flags().is_static()) continue;
503 flen += 1;
504 }
505
506 // allocate the array:
507 if (flen == 0) {
508 return nullptr; // return nothing if none are locally declared
509 }
510 if (super_fields != nullptr) {
511 flen += super_fields->length();
512 }
513 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, nullptr);
514 if (super_fields != nullptr) {
515 fields->appendAll(super_fields);
516 }
517
518 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
519 if (fs.access_flags().is_static()) continue;
520 fieldDescriptor& fd = fs.field_descriptor();
521 ciField* field = new (arena) ciField(&fd);
522 fields->append(field);
523 }
524 assert(fields->length() == flen, "sanity");
525 return fields;
526 }
527
528 bool ciInstanceKlass::compute_injected_fields_helper() {
529 ASSERT_IN_VM;
530 InstanceKlass* k = get_instanceKlass();
531
532 for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
533 if (fs.access_flags().is_static()) continue;
534 return true;
535 }
536 return false;
537 }
538
539 void ciInstanceKlass::compute_injected_fields() {
540 assert(is_loaded(), "must be loaded");
541
542 int has_injected_fields = 0;
543 if (super() != nullptr && super()->has_injected_fields()) {
544 has_injected_fields = 1;
545 } else {
546 GUARDED_VM_ENTRY({
547 has_injected_fields = compute_injected_fields_helper() ? 1 : 0;
548 });
549 }
550 // may be concurrently initialized for shared ciInstanceKlass objects
551 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization");
552 _has_injected_fields = has_injected_fields;
553 }
554
555 bool ciInstanceKlass::has_object_fields() const {
556 GUARDED_VM_ENTRY(
557 return get_instanceKlass()->nonstatic_oop_map_size() > 0;
558 );
559 }
560
561 bool ciInstanceKlass::compute_has_trusted_loader() {
562 ASSERT_IN_VM;
563 oop loader_oop = loader();
564 if (loader_oop == nullptr) {
565 return true; // bootstrap class loader
566 }
567 return java_lang_ClassLoader::is_trusted_loader(loader_oop);
568 }
569
570 // ------------------------------------------------------------------
571 // ciInstanceKlass::find_method
572 //
573 // Find a method in this klass.
574 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
575 VM_ENTRY_MARK;
576 InstanceKlass* k = get_instanceKlass();
577 Symbol* name_sym = name->get_symbol();
578 Symbol* sig_sym= signature->get_symbol();
579
580 Method* m = k->find_method(name_sym, sig_sym);
581 if (m == nullptr) return nullptr;
582
583 return CURRENT_THREAD_ENV->get_method(m);
584 }
585
586 // ------------------------------------------------------------------
587 // ciInstanceKlass::is_leaf_type
588 bool ciInstanceKlass::is_leaf_type() {
589 assert(is_loaded(), "must be loaded");
590 if (is_shared()) {
591 return is_final(); // approximately correct
592 } else {
593 return !has_subklass() && (nof_implementors() == 0);
594 }
595 }
596
597 // ------------------------------------------------------------------
598 // ciInstanceKlass::implementor
599 //
600 // Report an implementor of this interface.
601 // Note that there are various races here, since my copy
602 // of _nof_implementors might be out of date with respect
603 // to results returned by InstanceKlass::implementor.
604 // This is OK, since any dependencies we decide to assert
605 // will be checked later under the Compile_lock.
606 ciInstanceKlass* ciInstanceKlass::implementor() {
607 ciInstanceKlass* impl = _implementor;
608 if (impl == nullptr) {
609 if (is_shared()) {
610 impl = this; // assume a well-known interface never has a unique implementor
611 } else {
612 // Go into the VM to fetch the implementor.
613 VM_ENTRY_MARK;
614 InstanceKlass* ik = get_instanceKlass();
615 Klass* implk = ik->implementor();
616 if (implk != nullptr) {
617 if (implk == ik) {
618 // More than one implementors. Use 'this' in this case.
619 impl = this;
620 } else {
621 impl = CURRENT_THREAD_ENV->get_instance_klass(implk);
622 }
623 }
624 }
625 // Memoize this result.
626 _implementor = impl;
627 }
628 return impl;
629 }
630
631 // Utility class for printing of the contents of the static fields for
632 // use by compilation replay. It only prints out the information that
633 // could be consumed by the compiler, so for primitive types it prints
634 // out the actual value. For Strings it's the actual string value.
635 // For array types it it's first level array size since that's the
636 // only value which statically unchangeable. For all other reference
637 // types it simply prints out the dynamic type.
638
639 class StaticFinalFieldPrinter : public FieldClosure {
640 outputStream* _out;
641 const char* _holder;
642 public:
643 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
644 _out(out),
645 _holder(holder) {
646 }
647 void do_field(fieldDescriptor* fd) {
648 if (fd->is_final() && !fd->has_initial_value()) {
649 ResourceMark rm;
650 oop mirror = fd->field_holder()->java_mirror();
651 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
652 BasicType field_type = fd->field_type();
653 switch (field_type) {
654 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break;
655 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break;
656 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break;
657 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break;
658 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break;
659 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
660 case T_FLOAT: {
661 float f = mirror->float_field(fd->offset());
662 _out->print_cr("%d", *(int*)&f);
663 break;
664 }
665 case T_DOUBLE: {
666 double d = mirror->double_field(fd->offset());
667 _out->print_cr(INT64_FORMAT, *(int64_t*)&d);
668 break;
669 }
670 case T_ARRAY: // fall-through
671 case T_OBJECT: {
672 oop value = mirror->obj_field_acquire(fd->offset());
673 if (value == nullptr) {
674 if (field_type == T_ARRAY) {
675 _out->print("%d", -1);
676 }
677 _out->cr();
678 } else if (value->is_instance()) {
679 assert(field_type == T_OBJECT, "");
680 if (value->is_a(vmClasses::String_klass())) {
681 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
682 _out->print_cr("\"%s\"", (ascii_value != nullptr) ? ascii_value : "");
683 } else {
684 const char* klass_name = value->klass()->name()->as_quoted_ascii();
685 _out->print_cr("%s", klass_name);
686 }
687 } else if (value->is_array()) {
688 typeArrayOop ta = (typeArrayOop)value;
689 _out->print("%d", ta->length());
690 if (value->is_objArray()) {
691 objArrayOop oa = (objArrayOop)value;
692 const char* klass_name = value->klass()->name()->as_quoted_ascii();
693 _out->print(" %s", klass_name);
694 }
695 _out->cr();
696 } else {
697 ShouldNotReachHere();
698 }
699 break;
700 }
701 default:
702 ShouldNotReachHere();
703 }
704 }
705 }
706 };
707
708 const char *ciInstanceKlass::replay_name() const {
709 return CURRENT_ENV->replay_name(get_instanceKlass());
710 }
711
712 void ciInstanceKlass::dump_replay_instanceKlass(outputStream* out, InstanceKlass* ik) {
713 if (ik->is_hidden()) {
714 const char *name = CURRENT_ENV->dyno_name(ik);
715 if (name != nullptr) {
716 out->print_cr("instanceKlass %s # %s", name, ik->name()->as_quoted_ascii());
717 } else {
718 out->print_cr("# instanceKlass %s", ik->name()->as_quoted_ascii());
719 }
720 } else {
721 out->print_cr("instanceKlass %s", ik->name()->as_quoted_ascii());
722 }
723 }
724
725 GrowableArray<ciInstanceKlass*>* ciInstanceKlass::transitive_interfaces() const{
726 if (_transitive_interfaces == nullptr) {
727 const_cast<ciInstanceKlass*>(this)->compute_transitive_interfaces();
728 }
729 return _transitive_interfaces;
730 }
731
732 void ciInstanceKlass::compute_transitive_interfaces() {
733 GUARDED_VM_ENTRY(
734 InstanceKlass* ik = get_instanceKlass();
735 Array<InstanceKlass*>* interfaces = ik->transitive_interfaces();
736 int orig_length = interfaces->length();
737 Arena* arena = CURRENT_ENV->arena();
738 int transitive_interfaces_len = orig_length + (is_interface() ? 1 : 0);
739 GrowableArray<ciInstanceKlass*>* transitive_interfaces = new(arena)GrowableArray<ciInstanceKlass*>(arena, transitive_interfaces_len,
740 0, nullptr);
741 for (int i = 0; i < orig_length; i++) {
742 transitive_interfaces->append(CURRENT_ENV->get_instance_klass(interfaces->at(i)));
743 }
744 if (is_interface()) {
745 transitive_interfaces->append(this);
746 }
747 _transitive_interfaces = transitive_interfaces;
748 );
749 }
750
751 void ciInstanceKlass::dump_replay_data(outputStream* out) {
752 ResourceMark rm;
753
754 InstanceKlass* ik = get_instanceKlass();
755 ConstantPool* cp = ik->constants();
756
757 // Try to record related loaded classes
758 Klass* sub = ik->subklass();
759 while (sub != nullptr) {
760 if (sub->is_instance_klass()) {
761 InstanceKlass *isub = InstanceKlass::cast(sub);
762 dump_replay_instanceKlass(out, isub);
763 }
764 sub = sub->next_sibling();
765 }
766
767 // Dump out the state of the constant pool tags. During replay the
768 // tags will be validated for things which shouldn't change and
769 // classes will be resolved if the tags indicate that they were
770 // resolved at compile time.
771 const char *name = replay_name();
772 out->print("ciInstanceKlass %s %d %d %d", name,
773 is_linked(), is_initialized(), cp->length());
774 for (int index = 1; index < cp->length(); index++) {
775 out->print(" %d", cp->tags()->at(index));
776 }
777 out->cr();
778 if (is_initialized()) {
779 // Dump out the static final fields in case the compilation relies
780 // on their value for correct replay.
781 StaticFinalFieldPrinter sffp(out, name);
782 ik->do_local_static_fields(&sffp);
783 }
784 }
785
786 #ifdef ASSERT
787 bool ciInstanceKlass::debug_final_field_at(int offset) {
788 GUARDED_VM_ENTRY(
789 InstanceKlass* ik = get_instanceKlass();
790 fieldDescriptor fd;
791 if (ik->find_field_from_offset(offset, false, &fd)) {
792 return fd.is_final();
793 }
794 );
795 return false;
796 }
797
798 bool ciInstanceKlass::debug_stable_field_at(int offset) {
799 GUARDED_VM_ENTRY(
800 InstanceKlass* ik = get_instanceKlass();
801 fieldDescriptor fd;
802 if (ik->find_field_from_offset(offset, false, &fd)) {
803 return fd.is_stable();
804 }
805 );
806 return false;
807 }
808 #endif