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 _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 // ciInstanceKlass::compute_shared_is_initialized
140 void ciInstanceKlass::compute_shared_init_state() {
141 GUARDED_VM_ENTRY(
142 InstanceKlass* ik = get_instanceKlass();
143 _init_state = ik->init_state();
144 )
145 }
146
147 // ------------------------------------------------------------------
148 // ciInstanceKlass::compute_shared_has_subklass
149 bool ciInstanceKlass::compute_shared_has_subklass() {
150 GUARDED_VM_ENTRY(
151 InstanceKlass* ik = get_instanceKlass();
152 _has_subklass = ik->subklass() != nullptr ? subklass_true : subklass_false;
153 return _has_subklass == subklass_true;
154 )
155 }
156
157 // ------------------------------------------------------------------
158 // ciInstanceKlass::loader
159 oop ciInstanceKlass::loader() {
160 ASSERT_IN_VM;
161 return JNIHandles::resolve(_loader);
162 }
163
164 // ------------------------------------------------------------------
165 // ciInstanceKlass::loader_handle
166 jobject ciInstanceKlass::loader_handle() {
167 return _loader;
168 }
169
170 // ------------------------------------------------------------------
171 // ciInstanceKlass::field_cache
172 //
173 // Get the field cache associated with this klass.
174 ciConstantPoolCache* ciInstanceKlass::field_cache() {
175 if (is_shared()) {
176 return nullptr;
177 }
178 if (_field_cache == nullptr) {
179 assert(!is_java_lang_Object(), "Object has no fields");
180 Arena* arena = CURRENT_ENV->arena();
181 _field_cache = new (arena) ciConstantPoolCache(arena, 5);
182 }
183 return _field_cache;
184 }
185
186 // ------------------------------------------------------------------
187 // ciInstanceKlass::get_canonical_holder
188 //
189 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
190 #ifdef ASSERT
191 if (!(offset >= 0 && offset < layout_helper_size_in_bytes())) {
192 tty->print("*** get_canonical_holder(%d) on ", offset);
193 this->print();
194 tty->print_cr(" ***");
195 };
196 assert(offset >= 0 && offset < layout_helper_size_in_bytes(), "offset must be tame");
197 #endif
198
199 if (offset < instanceOopDesc::base_offset_in_bytes()) {
200 // All header offsets belong properly to java/lang/Object.
201 return CURRENT_ENV->Object_klass();
202 }
203
204 ciInstanceKlass* self = this;
205 assert(self->is_loaded(), "must be loaded to access field info");
206 ciField* field = self->get_field_by_offset(offset, false);
207 if (field != nullptr) {
208 return field->holder();
209 } else {
210 for (;;) {
211 assert(self->is_loaded(), "must be loaded to have size");
212 ciInstanceKlass* super = self->super();
213 if (super == nullptr ||
214 super->nof_nonstatic_fields() == 0 ||
215 super->layout_helper_size_in_bytes() <= offset) {
216 return self;
217 } else {
218 self = super; // return super->get_canonical_holder(offset)
219 }
220 }
221 }
222 }
223
224 // ------------------------------------------------------------------
225 // ciInstanceKlass::is_java_lang_Object
226 //
227 // Is this klass java.lang.Object?
228 bool ciInstanceKlass::is_java_lang_Object() const {
229 return equals(CURRENT_ENV->Object_klass());
230 }
231
232 // ------------------------------------------------------------------
233 // ciInstanceKlass::uses_default_loader
234 bool ciInstanceKlass::uses_default_loader() const {
235 // Note: We do not need to resolve the handle or enter the VM
236 // in order to test null-ness.
237 return _loader == nullptr;
238 }
239
240 // ------------------------------------------------------------------
241
242 /**
243 * Return basic type of boxed value for box klass or T_OBJECT if not.
244 */
245 BasicType ciInstanceKlass::box_klass_type() const {
246 if (uses_default_loader() && is_loaded()) {
247 return vmClasses::box_klass_type(get_Klass());
248 } else {
249 return T_OBJECT;
250 }
251 }
252
253 /**
254 * Is this boxing klass?
255 */
256 bool ciInstanceKlass::is_box_klass() const {
257 return is_java_primitive(box_klass_type());
258 }
259
260 /**
261 * Is this boxed value offset?
262 */
263 bool ciInstanceKlass::is_boxed_value_offset(int offset) const {
264 BasicType bt = box_klass_type();
265 return is_java_primitive(bt) &&
266 (offset == java_lang_boxing_object::value_offset(bt));
267 }
268
269 // ------------------------------------------------------------------
270 // ciInstanceKlass::is_in_package
271 //
272 // Is this klass in the given package?
273 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
274 // To avoid class loader mischief, this test always rejects application classes.
275 if (!uses_default_loader())
276 return false;
277 GUARDED_VM_ENTRY(
278 return is_in_package_impl(packagename, len);
279 )
280 }
281
282 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
283 ASSERT_IN_VM;
284
285 // If packagename contains trailing '/' exclude it from the
286 // prefix-test since we test for it explicitly.
287 if (packagename[len - 1] == '/')
288 len--;
289
290 if (!name()->starts_with(packagename, len))
291 return false;
292
293 // Test if the class name is something like "java/lang".
294 if ((len + 1) > name()->utf8_length())
295 return false;
296
297 // Test for trailing '/'
298 if (name()->char_at(len) != '/')
299 return false;
300
301 // Make sure it's not actually in a subpackage:
302 if (name()->index_of_at(len+1, "/", 1) >= 0)
303 return false;
304
305 return true;
306 }
307
308 // ------------------------------------------------------------------
309 // ciInstanceKlass::print_impl
310 //
311 // Implementation of the print method.
312 void ciInstanceKlass::print_impl(outputStream* st) {
313 ciKlass::print_impl(st);
314 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i(loader()));)
315 if (is_loaded()) {
316 st->print(" initialized=%s finalized=%s subklass=%s size=%d flags=",
317 bool_to_str(is_initialized()),
318 bool_to_str(has_finalizer()),
319 bool_to_str(has_subklass()),
320 layout_helper());
321
322 _flags.print_klass_flags();
323
324 if (_super) {
325 st->print(" super=");
326 _super->print_name();
327 }
328 if (_java_mirror) {
329 st->print(" mirror=PRESENT");
330 }
331 }
332 }
333
334 // ------------------------------------------------------------------
335 // ciInstanceKlass::super
336 //
337 // Get the superklass of this klass.
338 ciInstanceKlass* ciInstanceKlass::super() {
339 assert(is_loaded(), "must be loaded");
340 if (_super == nullptr && !is_java_lang_Object()) {
341 GUARDED_VM_ENTRY(
342 Klass* super_klass = get_instanceKlass()->super();
343 _super = CURRENT_ENV->get_instance_klass(super_klass);
344 )
345 }
346 return _super;
347 }
348
349 // ------------------------------------------------------------------
350 // ciInstanceKlass::java_mirror
351 //
352 // Get the instance of java.lang.Class corresponding to this klass.
353 // Cache it on this->_java_mirror.
354 ciInstance* ciInstanceKlass::java_mirror() {
355 if (is_shared()) {
356 return ciKlass::java_mirror();
357 }
358 if (_java_mirror == nullptr) {
359 _java_mirror = ciKlass::java_mirror();
360 }
361 return _java_mirror;
362 }
363
364 // ------------------------------------------------------------------
365 // ciInstanceKlass::unique_concrete_subklass
366 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
367 if (!is_loaded()) return nullptr; // No change if class is not loaded
368 if (!is_abstract()) return nullptr; // Only applies to abstract classes.
369 if (!has_subklass()) return nullptr; // Must have at least one subklass.
370 VM_ENTRY_MARK;
371 InstanceKlass* ik = get_instanceKlass();
372 Klass* up = ik->up_cast_abstract();
373 assert(up->is_instance_klass(), "must be InstanceKlass");
374 if (ik == up) {
375 return nullptr;
376 }
377 return CURRENT_THREAD_ENV->get_instance_klass(up);
378 }
379
380 // ------------------------------------------------------------------
381 // ciInstanceKlass::has_finalizable_subclass
382 bool ciInstanceKlass::has_finalizable_subclass() {
383 if (!is_loaded()) return true;
384 VM_ENTRY_MARK;
385 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != nullptr;
386 }
387
388 // ------------------------------------------------------------------
389 // ciInstanceKlass::contains_field_offset
390 bool ciInstanceKlass::contains_field_offset(int offset) {
391 VM_ENTRY_MARK;
392 return get_instanceKlass()->contains_field_offset(offset);
393 }
394
395 ciField* ciInstanceKlass::get_non_static_field_by_offset(const int field_offset) {
396 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) {
397 ciField* field = _nonstatic_fields->at(i);
398 int field_off = field->offset_in_bytes();
399 if (field_off == field_offset)
400 return field;
401 }
402 return nullptr;
403 }
404
405 // ------------------------------------------------------------------
406 // ciInstanceKlass::get_field_by_offset
407 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
408 if (!is_static) {
409 return get_non_static_field_by_offset(field_offset);
410 }
411 VM_ENTRY_MARK;
412 InstanceKlass* k = get_instanceKlass();
413 fieldDescriptor fd;
414 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
415 return nullptr;
416 }
417 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
418 return field;
419 }
420
421 // ------------------------------------------------------------------
422 // ciInstanceKlass::get_field_by_name
423 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
424 VM_ENTRY_MARK;
425 InstanceKlass* k = get_instanceKlass();
426 fieldDescriptor fd;
427 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
428 if (def == nullptr) {
429 return nullptr;
430 }
431 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
432 return field;
433 }
434
435 // This is essentially a shortcut for:
436 // get_field_by_offset(field_offset, is_static)->layout_type()
437 // except this does not require allocating memory for a new ciField
438 BasicType ciInstanceKlass::get_field_type_by_offset(const int field_offset, const bool is_static) {
439 if (!is_static) {
440 ciField* field = get_non_static_field_by_offset(field_offset);
441 return field != nullptr ? field->layout_type() : T_ILLEGAL;
442 }
443
444 // Avoid allocating a new ciField by obtaining the field type directly
445 VM_ENTRY_MARK;
446 InstanceKlass* k = get_instanceKlass();
447 fieldDescriptor fd;
448 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
449 return T_ILLEGAL;
450 }
451
452 // Reproduce the behavior of ciField::layout_type
453 BasicType field_type = fd.field_type();
454 if (is_reference_type(field_type)) {
455 return T_OBJECT;
456 }
457 return type2field[make(field_type)->basic_type()];
458 }
459
460 // ------------------------------------------------------------------
461 // ciInstanceKlass::compute_nonstatic_fields
462 int ciInstanceKlass::compute_nonstatic_fields() {
463 assert(is_loaded(), "must be loaded");
464
465 if (_nonstatic_fields != nullptr)
466 return _nonstatic_fields->length();
467
468 if (!has_nonstatic_fields()) {
469 Arena* arena = CURRENT_ENV->arena();
470 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, nullptr);
471 return 0;
472 }
473 assert(!is_java_lang_Object(), "bootstrap OK");
474
475 ciInstanceKlass* super = this->super();
476 GrowableArray<ciField*>* super_fields = nullptr;
477 if (super != nullptr && super->has_nonstatic_fields()) {
478 int super_flen = super->nof_nonstatic_fields();
479 super_fields = super->_nonstatic_fields;
480 assert(super_flen == 0 || super_fields != nullptr, "first get nof_fields");
481 }
482
483 GrowableArray<ciField*>* fields = nullptr;
484 GUARDED_VM_ENTRY({
485 fields = compute_nonstatic_fields_impl(super_fields);
486 });
487
488 if (fields == nullptr) {
489 // This can happen if this class (java.lang.Class) has invisible fields.
490 if (super_fields != nullptr) {
491 _nonstatic_fields = super_fields;
492 return super_fields->length();
493 } else {
494 return 0;
495 }
496 }
497
498 int flen = fields->length();
499
500 _nonstatic_fields = fields;
501 return flen;
502 }
503
504 GrowableArray<ciField*>*
505 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
506 super_fields) {
507 ASSERT_IN_VM;
508 Arena* arena = CURRENT_ENV->arena();
509 int flen = 0;
510 GrowableArray<ciField*>* fields = nullptr;
511 InstanceKlass* k = get_instanceKlass();
512 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
513 if (fs.access_flags().is_static()) continue;
514 flen += 1;
515 }
516
517 // allocate the array:
518 if (flen == 0) {
519 return nullptr; // return nothing if none are locally declared
520 }
521 if (super_fields != nullptr) {
522 flen += super_fields->length();
523 }
524 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, nullptr);
525 if (super_fields != nullptr) {
526 fields->appendAll(super_fields);
527 }
528
529 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
530 if (fs.access_flags().is_static()) continue;
531 fieldDescriptor& fd = fs.field_descriptor();
532 ciField* field = new (arena) ciField(&fd);
533 fields->append(field);
534 }
535 assert(fields->length() == flen, "sanity");
536 return fields;
537 }
538
539 bool ciInstanceKlass::compute_injected_fields_helper() {
540 ASSERT_IN_VM;
541 InstanceKlass* k = get_instanceKlass();
542
543 for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
544 if (fs.access_flags().is_static()) continue;
545 return true;
546 }
547 return false;
548 }
549
550 void ciInstanceKlass::compute_injected_fields() {
551 assert(is_loaded(), "must be loaded");
552
553 int has_injected_fields = 0;
554 if (super() != nullptr && super()->has_injected_fields()) {
555 has_injected_fields = 1;
556 } else {
557 GUARDED_VM_ENTRY({
558 has_injected_fields = compute_injected_fields_helper() ? 1 : 0;
559 });
560 }
561 // may be concurrently initialized for shared ciInstanceKlass objects
562 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization");
563 _has_injected_fields = has_injected_fields;
564 }
565
566 bool ciInstanceKlass::has_object_fields() const {
567 GUARDED_VM_ENTRY(
568 return get_instanceKlass()->nonstatic_oop_map_size() > 0;
569 );
570 }
571
572 bool ciInstanceKlass::compute_has_trusted_loader() {
573 ASSERT_IN_VM;
574 oop loader_oop = loader();
575 if (loader_oop == nullptr) {
576 return true; // bootstrap class loader
577 }
578 return java_lang_ClassLoader::is_trusted_loader(loader_oop);
579 }
580
581 bool ciInstanceKlass::has_class_initializer() {
582 VM_ENTRY_MARK;
583 return get_instanceKlass()->class_initializer() != nullptr;
584 }
585
586 // ------------------------------------------------------------------
587 // ciInstanceKlass::find_method
588 //
589 // Find a method in this klass.
590 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
591 VM_ENTRY_MARK;
592 InstanceKlass* k = get_instanceKlass();
593 Symbol* name_sym = name->get_symbol();
594 Symbol* sig_sym= signature->get_symbol();
595
596 Method* m = k->find_method(name_sym, sig_sym);
597 if (m == nullptr) return nullptr;
598
599 return CURRENT_THREAD_ENV->get_method(m);
600 }
601
602 // ------------------------------------------------------------------
603 // ciInstanceKlass::is_leaf_type
604 bool ciInstanceKlass::is_leaf_type() {
605 assert(is_loaded(), "must be loaded");
606 if (is_shared()) {
607 return is_final(); // approximately correct
608 } else {
609 return !has_subklass() && (!is_interface() || nof_implementors() == 0);
610 }
611 }
612
613 // ------------------------------------------------------------------
614 // ciInstanceKlass::implementor
615 //
616 // Report an implementor of this interface.
617 // Note that there are various races here, since my copy
618 // of _nof_implementors might be out of date with respect
619 // to results returned by InstanceKlass::implementor.
620 // This is OK, since any dependencies we decide to assert
621 // will be checked later under the Compile_lock.
622 ciInstanceKlass* ciInstanceKlass::implementor() {
623 assert(is_interface(), "required");
624 ciInstanceKlass* impl = _implementor;
625 if (impl == nullptr) {
626 if (is_shared()) {
627 impl = this; // assume a well-known interface never has a unique implementor
628 } else {
629 // Go into the VM to fetch the implementor.
630 VM_ENTRY_MARK;
631 InstanceKlass* ik = get_instanceKlass();
632 Klass* implk = ik->implementor();
633 if (implk != nullptr) {
634 if (implk == ik) {
635 // More than one implementors. Use 'this' in this case.
636 impl = this;
637 } else {
638 impl = CURRENT_THREAD_ENV->get_instance_klass(implk);
639 }
640 }
641 }
642 // Memoize this result.
643 _implementor = impl;
644 }
645 return impl;
646 }
647
648 // Utility class for printing of the contents of the static fields for
649 // use by compilation replay. It only prints out the information that
650 // could be consumed by the compiler, so for primitive types it prints
651 // out the actual value. For Strings it's the actual string value.
652 // For array types it it's first level array size since that's the
653 // only value which statically unchangeable. For all other reference
654 // types it simply prints out the dynamic type.
655
656 class StaticFinalFieldPrinter : public FieldClosure {
657 outputStream* _out;
658 const char* _holder;
659 public:
660 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
661 _out(out),
662 _holder(holder) {
663 }
664 void do_field(fieldDescriptor* fd) {
665 if (fd->is_final() && !fd->has_initial_value()) {
666 ResourceMark rm;
667 oop mirror = fd->field_holder()->java_mirror();
668 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
669 BasicType field_type = fd->field_type();
670 switch (field_type) {
671 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break;
672 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break;
673 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break;
674 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break;
675 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break;
676 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
677 case T_FLOAT: {
678 float f = mirror->float_field(fd->offset());
679 _out->print_cr("%d", *(int*)&f);
680 break;
681 }
682 case T_DOUBLE: {
683 double d = mirror->double_field(fd->offset());
684 _out->print_cr(INT64_FORMAT, *(int64_t*)&d);
685 break;
686 }
687 case T_ARRAY: // fall-through
688 case T_OBJECT: {
689 oop value = mirror->obj_field_acquire(fd->offset());
690 if (value == nullptr) {
691 if (field_type == T_ARRAY) {
692 _out->print("%d", -1);
693 }
694 _out->cr();
695 } else if (value->is_instance()) {
696 assert(field_type == T_OBJECT, "");
697 if (value->is_a(vmClasses::String_klass())) {
698 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
699 _out->print_cr("\"%s\"", (ascii_value != nullptr) ? ascii_value : "");
700 } else {
701 const char* klass_name = value->klass()->name()->as_quoted_ascii();
702 _out->print_cr("%s", klass_name);
703 }
704 } else if (value->is_array()) {
705 typeArrayOop ta = (typeArrayOop)value;
706 _out->print("%d", ta->length());
707 if (value->is_objArray()) {
708 objArrayOop oa = (objArrayOop)value;
709 const char* klass_name = value->klass()->name()->as_quoted_ascii();
710 _out->print(" %s", klass_name);
711 }
712 _out->cr();
713 } else {
714 ShouldNotReachHere();
715 }
716 break;
717 }
718 default:
719 ShouldNotReachHere();
720 }
721 }
722 }
723 };
724
725 const char *ciInstanceKlass::replay_name() const {
726 return CURRENT_ENV->replay_name(get_instanceKlass());
727 }
728
729 void ciInstanceKlass::dump_replay_instanceKlass(outputStream* out, InstanceKlass* ik) {
730 if (ik->is_hidden()) {
731 const char *name = CURRENT_ENV->dyno_name(ik);
732 if (name != nullptr) {
733 out->print_cr("instanceKlass %s # %s", name, ik->name()->as_quoted_ascii());
734 } else {
735 out->print_cr("# instanceKlass %s", ik->name()->as_quoted_ascii());
736 }
737 } else {
738 out->print_cr("instanceKlass %s", ik->name()->as_quoted_ascii());
739 }
740 }
741
742 GrowableArray<ciInstanceKlass*>* ciInstanceKlass::transitive_interfaces() const{
743 if (_transitive_interfaces == nullptr) {
744 const_cast<ciInstanceKlass*>(this)->compute_transitive_interfaces();
745 }
746 return _transitive_interfaces;
747 }
748
749 void ciInstanceKlass::compute_transitive_interfaces() {
750 GUARDED_VM_ENTRY(
751 InstanceKlass* ik = get_instanceKlass();
752 Array<InstanceKlass*>* interfaces = ik->transitive_interfaces();
753 int orig_length = interfaces->length();
754 Arena* arena = CURRENT_ENV->arena();
755 int transitive_interfaces_len = orig_length + (is_interface() ? 1 : 0);
756 GrowableArray<ciInstanceKlass*>* transitive_interfaces = new(arena)GrowableArray<ciInstanceKlass*>(arena, transitive_interfaces_len,
757 0, nullptr);
758 for (int i = 0; i < orig_length; i++) {
759 transitive_interfaces->append(CURRENT_ENV->get_instance_klass(interfaces->at(i)));
760 }
761 if (is_interface()) {
762 transitive_interfaces->append(this);
763 }
764 _transitive_interfaces = transitive_interfaces;
765 );
766 }
767
768 void ciInstanceKlass::dump_replay_data(outputStream* out) {
769 ResourceMark rm;
770
771 InstanceKlass* ik = get_instanceKlass();
772 ConstantPool* cp = ik->constants();
773
774 // Try to record related loaded classes
775 Klass* sub = ik->subklass();
776 while (sub != nullptr) {
777 if (sub->is_instance_klass()) {
778 InstanceKlass *isub = InstanceKlass::cast(sub);
779 dump_replay_instanceKlass(out, isub);
780 }
781 sub = sub->next_sibling();
782 }
783
784 // Dump out the state of the constant pool tags. During replay the
785 // tags will be validated for things which shouldn't change and
786 // classes will be resolved if the tags indicate that they were
787 // resolved at compile time.
788 const char *name = replay_name();
789 out->print("ciInstanceKlass %s %d %d %d", name,
790 is_linked(), is_initialized(), cp->length());
791 for (int index = 1; index < cp->length(); index++) {
792 out->print(" %d", cp->tags()->at(index));
793 }
794 out->cr();
795 if (is_initialized()) {
796 // Dump out the static final fields in case the compilation relies
797 // on their value for correct replay.
798 StaticFinalFieldPrinter sffp(out, name);
799 ik->do_local_static_fields(&sffp);
800 }
801 }
802
803 #ifdef ASSERT
804 bool ciInstanceKlass::debug_final_field_at(int offset) {
805 GUARDED_VM_ENTRY(
806 InstanceKlass* ik = get_instanceKlass();
807 fieldDescriptor fd;
808 if (ik->find_field_from_offset(offset, false, &fd)) {
809 return fd.is_final();
810 }
811 );
812 return false;
813 }
814
815 bool ciInstanceKlass::debug_stable_field_at(int offset) {
816 GUARDED_VM_ENTRY(
817 InstanceKlass* ik = get_instanceKlass();
818 fieldDescriptor fd;
819 if (ik->find_field_from_offset(offset, false, &fd)) {
820 return fd.is_stable();
821 }
822 );
823 return false;
824 }
825 #endif