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/instanceKlass.inline.hpp"
35 #include "oops/klass.inline.hpp"
36 #include "oops/oop.inline.hpp"
37 #include "oops/fieldStreams.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 if (field_off > field_offset)
422 break;
423 // could do binary search or check bins, but probably not worth it
424 }
425 return nullptr;
426 }
427 VM_ENTRY_MARK;
428 InstanceKlass* k = get_instanceKlass();
429 fieldDescriptor fd;
430 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
431 return nullptr;
432 }
433 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
434 return field;
435 }
436
437 // ------------------------------------------------------------------
438 // ciInstanceKlass::get_field_by_name
439 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
440 VM_ENTRY_MARK;
441 InstanceKlass* k = get_instanceKlass();
442 fieldDescriptor fd;
443 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
444 if (def == nullptr) {
445 return nullptr;
446 }
447 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
448 return field;
449 }
450
451
452 static int sort_field_by_offset(ciField** a, ciField** b) {
453 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
454 // (no worries about 32-bit overflow...)
455 }
456
457 // ------------------------------------------------------------------
458 // ciInstanceKlass::compute_nonstatic_fields
459 int ciInstanceKlass::compute_nonstatic_fields() {
460 assert(is_loaded(), "must be loaded");
461
462 if (_nonstatic_fields != nullptr)
463 return _nonstatic_fields->length();
464
465 if (!has_nonstatic_fields()) {
466 Arena* arena = CURRENT_ENV->arena();
467 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, nullptr);
468 return 0;
469 }
470 assert(!is_java_lang_Object(), "bootstrap OK");
471
472 ciInstanceKlass* super = this->super();
473 GrowableArray<ciField*>* super_fields = nullptr;
474 if (super != nullptr && super->has_nonstatic_fields()) {
475 int super_flen = super->nof_nonstatic_fields();
476 super_fields = super->_nonstatic_fields;
477 assert(super_flen == 0 || super_fields != nullptr, "first get nof_fields");
478 }
479
480 GrowableArray<ciField*>* fields = nullptr;
481 GUARDED_VM_ENTRY({
482 fields = compute_nonstatic_fields_impl(super_fields);
483 });
484
485 if (fields == nullptr) {
486 // This can happen if this class (java.lang.Class) has invisible fields.
487 if (super_fields != nullptr) {
488 _nonstatic_fields = super_fields;
489 return super_fields->length();
490 } else {
491 return 0;
492 }
493 }
494
495 int flen = fields->length();
496
497 // Now sort them by offset, ascending.
498 // (In principle, they could mix with superclass fields.)
499 fields->sort(sort_field_by_offset);
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 // ------------------------------------------------------------------
582 // ciInstanceKlass::find_method
583 //
584 // Find a method in this klass.
585 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
586 VM_ENTRY_MARK;
587 InstanceKlass* k = get_instanceKlass();
588 Symbol* name_sym = name->get_symbol();
589 Symbol* sig_sym= signature->get_symbol();
590
591 Method* m = k->find_method(name_sym, sig_sym);
592 if (m == nullptr) return nullptr;
593
594 return CURRENT_THREAD_ENV->get_method(m);
595 }
596
597 // ------------------------------------------------------------------
598 // ciInstanceKlass::is_leaf_type
599 bool ciInstanceKlass::is_leaf_type() {
600 assert(is_loaded(), "must be loaded");
601 if (is_shared()) {
602 return is_final(); // approximately correct
603 } else {
604 return !has_subklass() && (nof_implementors() == 0);
605 }
606 }
607
608 // ------------------------------------------------------------------
609 // ciInstanceKlass::implementor
610 //
611 // Report an implementor of this interface.
612 // Note that there are various races here, since my copy
613 // of _nof_implementors might be out of date with respect
614 // to results returned by InstanceKlass::implementor.
615 // This is OK, since any dependencies we decide to assert
616 // will be checked later under the Compile_lock.
617 ciInstanceKlass* ciInstanceKlass::implementor() {
618 ciInstanceKlass* impl = _implementor;
619 if (impl == nullptr) {
620 if (is_shared()) {
621 impl = this; // assume a well-known interface never has a unique implementor
622 } else {
623 // Go into the VM to fetch the implementor.
624 VM_ENTRY_MARK;
625 InstanceKlass* ik = get_instanceKlass();
626 Klass* implk = ik->implementor();
627 if (implk != nullptr) {
628 if (implk == ik) {
629 // More than one implementors. Use 'this' in this case.
630 impl = this;
631 } else {
632 impl = CURRENT_THREAD_ENV->get_instance_klass(implk);
633 }
634 }
635 }
636 // Memoize this result.
637 _implementor = impl;
638 }
639 return impl;
640 }
641
642 // Utility class for printing of the contents of the static fields for
643 // use by compilation replay. It only prints out the information that
644 // could be consumed by the compiler, so for primitive types it prints
645 // out the actual value. For Strings it's the actual string value.
646 // For array types it it's first level array size since that's the
647 // only value which statically unchangeable. For all other reference
648 // types it simply prints out the dynamic type.
649
650 class StaticFinalFieldPrinter : public FieldClosure {
651 outputStream* _out;
652 const char* _holder;
653 public:
654 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
655 _out(out),
656 _holder(holder) {
657 }
658 void do_field(fieldDescriptor* fd) {
659 if (fd->is_final() && !fd->has_initial_value()) {
660 ResourceMark rm;
661 oop mirror = fd->field_holder()->java_mirror();
662 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
663 BasicType field_type = fd->field_type();
664 switch (field_type) {
665 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break;
666 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break;
667 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break;
668 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break;
669 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break;
670 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
671 case T_FLOAT: {
672 float f = mirror->float_field(fd->offset());
673 _out->print_cr("%d", *(int*)&f);
674 break;
675 }
676 case T_DOUBLE: {
677 double d = mirror->double_field(fd->offset());
678 _out->print_cr(INT64_FORMAT, *(int64_t*)&d);
679 break;
680 }
681 case T_ARRAY: // fall-through
682 case T_OBJECT: {
683 oop value = mirror->obj_field_acquire(fd->offset());
684 if (value == nullptr) {
685 if (field_type == T_ARRAY) {
686 _out->print("%d", -1);
687 }
688 _out->cr();
689 } else if (value->is_instance()) {
690 assert(field_type == T_OBJECT, "");
691 if (value->is_a(vmClasses::String_klass())) {
692 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
693 _out->print_cr("\"%s\"", (ascii_value != nullptr) ? ascii_value : "");
694 } else {
695 const char* klass_name = value->klass()->name()->as_quoted_ascii();
696 _out->print_cr("%s", klass_name);
697 }
698 } else if (value->is_array()) {
699 typeArrayOop ta = (typeArrayOop)value;
700 _out->print("%d", ta->length());
701 if (value->is_objArray()) {
702 objArrayOop oa = (objArrayOop)value;
703 const char* klass_name = value->klass()->name()->as_quoted_ascii();
704 _out->print(" %s", klass_name);
705 }
706 _out->cr();
707 } else {
708 ShouldNotReachHere();
709 }
710 break;
711 }
712 default:
713 ShouldNotReachHere();
714 }
715 }
716 }
717 };
718
719 const char *ciInstanceKlass::replay_name() const {
720 return CURRENT_ENV->replay_name(get_instanceKlass());
721 }
722
723 void ciInstanceKlass::dump_replay_instanceKlass(outputStream* out, InstanceKlass* ik) {
724 if (ik->is_hidden()) {
725 const char *name = CURRENT_ENV->dyno_name(ik);
726 if (name != nullptr) {
727 out->print_cr("instanceKlass %s # %s", name, ik->name()->as_quoted_ascii());
728 } else {
729 out->print_cr("# instanceKlass %s", ik->name()->as_quoted_ascii());
730 }
731 } else {
732 out->print_cr("instanceKlass %s", ik->name()->as_quoted_ascii());
733 }
734 }
735
736 GrowableArray<ciInstanceKlass*>* ciInstanceKlass::transitive_interfaces() const{
737 if (_transitive_interfaces == nullptr) {
738 const_cast<ciInstanceKlass*>(this)->compute_transitive_interfaces();
739 }
740 return _transitive_interfaces;
741 }
742
743 void ciInstanceKlass::compute_transitive_interfaces() {
744 GUARDED_VM_ENTRY(
745 InstanceKlass* ik = get_instanceKlass();
746 Array<InstanceKlass*>* interfaces = ik->transitive_interfaces();
747 int orig_length = interfaces->length();
748 Arena* arena = CURRENT_ENV->arena();
749 int transitive_interfaces_len = orig_length + (is_interface() ? 1 : 0);
750 GrowableArray<ciInstanceKlass*>* transitive_interfaces = new(arena)GrowableArray<ciInstanceKlass*>(arena, transitive_interfaces_len,
751 0, nullptr);
752 for (int i = 0; i < orig_length; i++) {
753 transitive_interfaces->append(CURRENT_ENV->get_instance_klass(interfaces->at(i)));
754 }
755 if (is_interface()) {
756 transitive_interfaces->append(this);
757 }
758 _transitive_interfaces = transitive_interfaces;
759 );
760 }
761
762 void ciInstanceKlass::dump_replay_data(outputStream* out) {
763 ResourceMark rm;
764
765 InstanceKlass* ik = get_instanceKlass();
766 ConstantPool* cp = ik->constants();
767
768 // Try to record related loaded classes
769 Klass* sub = ik->subklass();
770 while (sub != nullptr) {
771 if (sub->is_instance_klass()) {
772 InstanceKlass *isub = InstanceKlass::cast(sub);
773 dump_replay_instanceKlass(out, isub);
774 }
775 sub = sub->next_sibling();
776 }
777
778 // Dump out the state of the constant pool tags. During replay the
779 // tags will be validated for things which shouldn't change and
780 // classes will be resolved if the tags indicate that they were
781 // resolved at compile time.
782 const char *name = replay_name();
783 out->print("ciInstanceKlass %s %d %d %d", name,
784 is_linked(), is_initialized(), cp->length());
785 for (int index = 1; index < cp->length(); index++) {
786 out->print(" %d", cp->tags()->at(index));
787 }
788 out->cr();
789 if (is_initialized()) {
790 // Dump out the static final fields in case the compilation relies
791 // on their value for correct replay.
792 StaticFinalFieldPrinter sffp(out, name);
793 ik->do_local_static_fields(&sffp);
794 }
795 }
796
797 #ifdef ASSERT
798 bool ciInstanceKlass::debug_final_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_final();
804 }
805 );
806 return false;
807 }
808
809 bool ciInstanceKlass::debug_stable_field_at(int offset) {
810 GUARDED_VM_ENTRY(
811 InstanceKlass* ik = get_instanceKlass();
812 fieldDescriptor fd;
813 if (ik->find_field_from_offset(offset, false, &fd)) {
814 return fd.is_stable();
815 }
816 );
817 return false;
818 }
819 #endif