1 /*
2 * Copyright (c) 1999, 2023, 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 "precompiled.hpp"
26 #include "ci/ciField.hpp"
27 #include "ci/ciInstance.hpp"
28 #include "ci/ciInstanceKlass.hpp"
29 #include "ci/ciUtilities.inline.hpp"
30 #include "classfile/javaClasses.hpp"
31 #include "classfile/vmClasses.hpp"
32 #include "memory/allocation.hpp"
33 #include "memory/allocation.inline.hpp"
34 #include "memory/resourceArea.hpp"
35 #include "oops/instanceKlass.inline.hpp"
36 #include "oops/klass.inline.hpp"
37 #include "oops/oop.inline.hpp"
38 #include "oops/fieldStreams.inline.hpp"
39 #include "runtime/fieldDescriptor.inline.hpp"
40 #include "runtime/handles.inline.hpp"
41 #include "runtime/jniHandles.inline.hpp"
42
43 // ciInstanceKlass
44 //
45 // This class represents a Klass* in the HotSpot virtual machine
46 // whose Klass part in an InstanceKlass.
47
48
49 // ------------------------------------------------------------------
50 // ciInstanceKlass::ciInstanceKlass
51 //
52 // Loaded instance klass.
53 ciInstanceKlass::ciInstanceKlass(Klass* k) :
54 ciKlass(k)
55 {
56 assert(get_Klass()->is_instance_klass(), "wrong type");
57 assert(get_instanceKlass()->is_loaded(), "must be at least loaded");
58 InstanceKlass* ik = get_instanceKlass();
59
60 AccessFlags access_flags = ik->access_flags();
61 _flags = ciFlags(access_flags);
62 _has_finalizer = access_flags.has_finalizer();
63 _has_subklass = flags().is_final() ? subklass_false : subklass_unknown;
64 _init_state = ik->init_state();
65 _has_nonstatic_fields = ik->has_nonstatic_fields();
66 _has_nonstatic_concrete_methods = ik->has_nonstatic_concrete_methods();
67 _is_hidden = ik->is_hidden();
68 _is_record = ik->is_record();
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 _protection_domain = JNIHandles::make_local(thread,
94 ik->protection_domain());
95 _is_shared = false;
96 } else {
97 Handle h_loader(thread, ik->class_loader());
98 Handle h_protection_domain(thread, ik->protection_domain());
99 _loader = JNIHandles::make_global(h_loader);
100 _protection_domain = JNIHandles::make_global(h_protection_domain);
101 _is_shared = true;
102 }
103
104 _has_trusted_loader = compute_has_trusted_loader();
105
106 // Lazy fields get filled in only upon request.
107 _super = nullptr;
108 _java_mirror = nullptr;
109
110 if (is_shared()) {
111 if (k != vmClasses::Object_klass()) {
112 super();
113 }
114 //compute_nonstatic_fields(); // done outside of constructor
115 }
116
117 _field_cache = nullptr;
118 }
119
120 // Version for unloaded classes:
121 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
122 jobject loader, jobject protection_domain)
123 : ciKlass(name, T_OBJECT)
124 {
125 assert(name->char_at(0) != JVM_SIGNATURE_ARRAY, "not an instance klass");
126 _init_state = (InstanceKlass::ClassState)0;
127 _has_nonstatic_fields = false;
128 _nonstatic_fields = nullptr;
129 _has_injected_fields = -1;
130 _is_hidden = false;
131 _is_record = false;
132 _loader = loader;
133 _protection_domain = protection_domain;
134 _is_shared = false;
135 _super = nullptr;
136 _java_mirror = nullptr;
137 _field_cache = nullptr;
138 _has_trusted_loader = compute_has_trusted_loader();
139 }
140
141
142
143 // ------------------------------------------------------------------
144 // ciInstanceKlass::compute_shared_is_initialized
145 void ciInstanceKlass::compute_shared_init_state() {
146 GUARDED_VM_ENTRY(
147 InstanceKlass* ik = get_instanceKlass();
148 _init_state = ik->init_state();
149 )
150 }
151
152 // ------------------------------------------------------------------
153 // ciInstanceKlass::compute_shared_has_subklass
154 bool ciInstanceKlass::compute_shared_has_subklass() {
155 GUARDED_VM_ENTRY(
156 InstanceKlass* ik = get_instanceKlass();
157 _has_subklass = ik->subklass() != nullptr ? subklass_true : subklass_false;
158 return _has_subklass == subklass_true;
159 )
160 }
161
162 // ------------------------------------------------------------------
163 // ciInstanceKlass::loader
164 oop ciInstanceKlass::loader() {
165 ASSERT_IN_VM;
166 return JNIHandles::resolve(_loader);
167 }
168
169 // ------------------------------------------------------------------
170 // ciInstanceKlass::loader_handle
171 jobject ciInstanceKlass::loader_handle() {
172 return _loader;
173 }
174
175 // ------------------------------------------------------------------
176 // ciInstanceKlass::protection_domain
177 oop ciInstanceKlass::protection_domain() {
178 ASSERT_IN_VM;
179 return JNIHandles::resolve(_protection_domain);
180 }
181
182 // ------------------------------------------------------------------
183 // ciInstanceKlass::protection_domain_handle
184 jobject ciInstanceKlass::protection_domain_handle() {
185 return _protection_domain;
186 }
187
188 // ------------------------------------------------------------------
189 // ciInstanceKlass::field_cache
190 //
191 // Get the field cache associated with this klass.
192 ciConstantPoolCache* ciInstanceKlass::field_cache() {
193 if (is_shared()) {
194 return nullptr;
195 }
196 if (_field_cache == nullptr) {
197 assert(!is_java_lang_Object(), "Object has no fields");
198 Arena* arena = CURRENT_ENV->arena();
199 _field_cache = new (arena) ciConstantPoolCache(arena, 5);
200 }
201 return _field_cache;
202 }
203
204 // ------------------------------------------------------------------
205 // ciInstanceKlass::get_canonical_holder
206 //
207 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
208 #ifdef ASSERT
209 if (!(offset >= 0 && offset < layout_helper_size_in_bytes())) {
210 tty->print("*** get_canonical_holder(%d) on ", offset);
211 this->print();
212 tty->print_cr(" ***");
213 };
214 assert(offset >= 0 && offset < layout_helper_size_in_bytes(), "offset must be tame");
215 #endif
216
217 if (offset < instanceOopDesc::base_offset_in_bytes()) {
218 // All header offsets belong properly to java/lang/Object.
219 return CURRENT_ENV->Object_klass();
220 }
221
222 ciInstanceKlass* self = this;
223 assert(self->is_loaded(), "must be loaded to access field info");
224 ciField* field = self->get_field_by_offset(offset, false);
225 if (field != nullptr) {
226 return field->holder();
227 } else {
228 for (;;) {
229 assert(self->is_loaded(), "must be loaded to have size");
230 ciInstanceKlass* super = self->super();
231 if (super == nullptr ||
232 super->nof_nonstatic_fields() == 0 ||
233 super->layout_helper_size_in_bytes() <= offset) {
234 return self;
235 } else {
236 self = super; // return super->get_canonical_holder(offset)
237 }
238 }
239 }
240 }
241
242 // ------------------------------------------------------------------
243 // ciInstanceKlass::is_java_lang_Object
244 //
245 // Is this klass java.lang.Object?
246 bool ciInstanceKlass::is_java_lang_Object() const {
247 return equals(CURRENT_ENV->Object_klass());
248 }
249
250 // ------------------------------------------------------------------
251 // ciInstanceKlass::uses_default_loader
252 bool ciInstanceKlass::uses_default_loader() const {
253 // Note: We do not need to resolve the handle or enter the VM
254 // in order to test null-ness.
255 return _loader == nullptr;
256 }
257
258 // ------------------------------------------------------------------
259
260 /**
261 * Return basic type of boxed value for box klass or T_OBJECT if not.
262 */
263 BasicType ciInstanceKlass::box_klass_type() const {
264 if (uses_default_loader() && is_loaded()) {
265 return vmClasses::box_klass_type(get_Klass());
266 } else {
267 return T_OBJECT;
268 }
269 }
270
271 /**
272 * Is this boxing klass?
273 */
274 bool ciInstanceKlass::is_box_klass() const {
275 return is_java_primitive(box_klass_type());
276 }
277
278 /**
279 * Is this boxed value offset?
280 */
281 bool ciInstanceKlass::is_boxed_value_offset(int offset) const {
282 BasicType bt = box_klass_type();
283 return is_java_primitive(bt) &&
284 (offset == java_lang_boxing_object::value_offset(bt));
285 }
286
287 // ------------------------------------------------------------------
288 // ciInstanceKlass::is_in_package
289 //
290 // Is this klass in the given package?
291 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
292 // To avoid class loader mischief, this test always rejects application classes.
293 if (!uses_default_loader())
294 return false;
295 GUARDED_VM_ENTRY(
296 return is_in_package_impl(packagename, len);
297 )
298 }
299
300 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
301 ASSERT_IN_VM;
302
303 // If packagename contains trailing '/' exclude it from the
304 // prefix-test since we test for it explicitly.
305 if (packagename[len - 1] == '/')
306 len--;
307
308 if (!name()->starts_with(packagename, len))
309 return false;
310
311 // Test if the class name is something like "java/lang".
312 if ((len + 1) > name()->utf8_length())
313 return false;
314
315 // Test for trailing '/'
316 if (name()->char_at(len) != '/')
317 return false;
318
319 // Make sure it's not actually in a subpackage:
320 if (name()->index_of_at(len+1, "/", 1) >= 0)
321 return false;
322
323 return true;
324 }
325
326 // ------------------------------------------------------------------
327 // ciInstanceKlass::print_impl
328 //
329 // Implementation of the print method.
330 void ciInstanceKlass::print_impl(outputStream* st) {
331 ciKlass::print_impl(st);
332 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i(loader()));)
333 if (is_loaded()) {
334 st->print(" initialized=%s finalized=%s subklass=%s size=%d flags=",
335 bool_to_str(is_initialized()),
336 bool_to_str(has_finalizer()),
337 bool_to_str(has_subklass()),
338 layout_helper());
339
340 _flags.print_klass_flags();
341
342 if (_super) {
343 st->print(" super=");
344 _super->print_name();
345 }
346 if (_java_mirror) {
347 st->print(" mirror=PRESENT");
348 }
349 }
350 }
351
352 // ------------------------------------------------------------------
353 // ciInstanceKlass::super
354 //
355 // Get the superklass of this klass.
356 ciInstanceKlass* ciInstanceKlass::super() {
357 assert(is_loaded(), "must be loaded");
358 if (_super == nullptr && !is_java_lang_Object()) {
359 GUARDED_VM_ENTRY(
360 Klass* super_klass = get_instanceKlass()->super();
361 _super = CURRENT_ENV->get_instance_klass(super_klass);
362 )
363 }
364 return _super;
365 }
366
367 // ------------------------------------------------------------------
368 // ciInstanceKlass::java_mirror
369 //
370 // Get the instance of java.lang.Class corresponding to this klass.
371 // Cache it on this->_java_mirror.
372 ciInstance* ciInstanceKlass::java_mirror() {
373 if (is_shared()) {
374 return ciKlass::java_mirror();
375 }
376 if (_java_mirror == nullptr) {
377 _java_mirror = ciKlass::java_mirror();
378 }
379 return _java_mirror;
380 }
381
382 // ------------------------------------------------------------------
383 // ciInstanceKlass::unique_concrete_subklass
384 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
385 if (!is_loaded()) return nullptr; // No change if class is not loaded
386 if (!is_abstract()) return nullptr; // Only applies to abstract classes.
387 if (!has_subklass()) return nullptr; // Must have at least one subklass.
388 VM_ENTRY_MARK;
389 InstanceKlass* ik = get_instanceKlass();
390 Klass* up = ik->up_cast_abstract();
391 assert(up->is_instance_klass(), "must be InstanceKlass");
392 if (ik == up) {
393 return nullptr;
394 }
395 return CURRENT_THREAD_ENV->get_instance_klass(up);
396 }
397
398 // ------------------------------------------------------------------
399 // ciInstanceKlass::has_finalizable_subclass
400 bool ciInstanceKlass::has_finalizable_subclass() {
401 if (!is_loaded()) return true;
402 VM_ENTRY_MARK;
403 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != nullptr;
404 }
405
406 // ------------------------------------------------------------------
407 // ciInstanceKlass::contains_field_offset
408 bool ciInstanceKlass::contains_field_offset(int offset) {
409 VM_ENTRY_MARK;
410 return get_instanceKlass()->contains_field_offset(offset);
411 }
412
413 // ------------------------------------------------------------------
414 // ciInstanceKlass::get_field_by_offset
415 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
416 if (!is_static) {
417 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) {
418 ciField* field = _nonstatic_fields->at(i);
419 int field_off = field->offset_in_bytes();
420 if (field_off == field_offset)
421 return field;
422 if (field_off > field_offset)
423 break;
424 // could do binary search or check bins, but probably not worth it
425 }
426 return nullptr;
427 }
428 VM_ENTRY_MARK;
429 InstanceKlass* k = get_instanceKlass();
430 fieldDescriptor fd;
431 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
432 return nullptr;
433 }
434 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
435 return field;
436 }
437
438 // ------------------------------------------------------------------
439 // ciInstanceKlass::get_field_by_name
440 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
441 VM_ENTRY_MARK;
442 InstanceKlass* k = get_instanceKlass();
443 fieldDescriptor fd;
444 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
445 if (def == nullptr) {
446 return nullptr;
447 }
448 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
449 return field;
450 }
451
452
453 static int sort_field_by_offset(ciField** a, ciField** b) {
454 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
455 // (no worries about 32-bit overflow...)
456 }
457
458 // ------------------------------------------------------------------
459 // ciInstanceKlass::compute_nonstatic_fields
460 int ciInstanceKlass::compute_nonstatic_fields() {
461 assert(is_loaded(), "must be loaded");
462
463 if (_nonstatic_fields != nullptr)
464 return _nonstatic_fields->length();
465
466 if (!has_nonstatic_fields()) {
467 Arena* arena = CURRENT_ENV->arena();
468 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, nullptr);
469 return 0;
470 }
471 assert(!is_java_lang_Object(), "bootstrap OK");
472
473 ciInstanceKlass* super = this->super();
474 GrowableArray<ciField*>* super_fields = nullptr;
475 if (super != nullptr && super->has_nonstatic_fields()) {
476 int super_flen = super->nof_nonstatic_fields();
477 super_fields = super->_nonstatic_fields;
478 assert(super_flen == 0 || super_fields != nullptr, "first get nof_fields");
479 }
480
481 GrowableArray<ciField*>* fields = nullptr;
482 GUARDED_VM_ENTRY({
483 fields = compute_nonstatic_fields_impl(super_fields);
484 });
485
486 if (fields == nullptr) {
487 // This can happen if this class (java.lang.Class) has invisible fields.
488 if (super_fields != nullptr) {
489 _nonstatic_fields = super_fields;
490 return super_fields->length();
491 } else {
492 return 0;
493 }
494 }
495
496 int flen = fields->length();
497
498 // Now sort them by offset, ascending.
499 // (In principle, they could mix with superclass fields.)
500 fields->sort(sort_field_by_offset);
501 _nonstatic_fields = fields;
502 return flen;
503 }
504
505 GrowableArray<ciField*>*
506 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
507 super_fields) {
508 ASSERT_IN_VM;
509 Arena* arena = CURRENT_ENV->arena();
510 int flen = 0;
511 GrowableArray<ciField*>* fields = nullptr;
512 InstanceKlass* k = get_instanceKlass();
513 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
514 if (fs.access_flags().is_static()) continue;
515 flen += 1;
516 }
517
518 // allocate the array:
519 if (flen == 0) {
520 return nullptr; // return nothing if none are locally declared
521 }
522 if (super_fields != nullptr) {
523 flen += super_fields->length();
524 }
525 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, nullptr);
526 if (super_fields != nullptr) {
527 fields->appendAll(super_fields);
528 }
529
530 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
531 if (fs.access_flags().is_static()) continue;
532 fieldDescriptor& fd = fs.field_descriptor();
533 ciField* field = new (arena) ciField(&fd);
534 fields->append(field);
535 }
536 assert(fields->length() == flen, "sanity");
537 return fields;
538 }
539
540 bool ciInstanceKlass::compute_injected_fields_helper() {
541 ASSERT_IN_VM;
542 InstanceKlass* k = get_instanceKlass();
543
544 for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
545 if (fs.access_flags().is_static()) continue;
546 return true;
547 }
548 return false;
549 }
550
551 void ciInstanceKlass::compute_injected_fields() {
552 assert(is_loaded(), "must be loaded");
553
554 int has_injected_fields = 0;
555 if (super() != nullptr && super()->has_injected_fields()) {
556 has_injected_fields = 1;
557 } else {
558 GUARDED_VM_ENTRY({
559 has_injected_fields = compute_injected_fields_helper() ? 1 : 0;
560 });
561 }
562 // may be concurrently initialized for shared ciInstanceKlass objects
563 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization");
564 _has_injected_fields = has_injected_fields;
565 }
566
567 bool ciInstanceKlass::has_object_fields() const {
568 GUARDED_VM_ENTRY(
569 return get_instanceKlass()->nonstatic_oop_map_size() > 0;
570 );
571 }
572
573 bool ciInstanceKlass::compute_has_trusted_loader() {
574 ASSERT_IN_VM;
575 oop loader_oop = loader();
576 if (loader_oop == nullptr) {
577 return true; // bootstrap class loader
578 }
579 return java_lang_ClassLoader::is_trusted_loader(loader_oop);
580 }
581
582 // ------------------------------------------------------------------
583 // ciInstanceKlass::find_method
584 //
585 // Find a method in this klass.
586 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
587 VM_ENTRY_MARK;
588 InstanceKlass* k = get_instanceKlass();
589 Symbol* name_sym = name->get_symbol();
590 Symbol* sig_sym= signature->get_symbol();
591
592 Method* m = k->find_method(name_sym, sig_sym);
593 if (m == nullptr) return nullptr;
594
595 return CURRENT_THREAD_ENV->get_method(m);
596 }
597
598 // ------------------------------------------------------------------
599 // ciInstanceKlass::is_leaf_type
600 bool ciInstanceKlass::is_leaf_type() {
601 assert(is_loaded(), "must be loaded");
602 if (is_shared()) {
603 return is_final(); // approximately correct
604 } else {
605 return !has_subklass() && (nof_implementors() == 0);
606 }
607 }
608
609 // ------------------------------------------------------------------
610 // ciInstanceKlass::implementor
611 //
612 // Report an implementor of this interface.
613 // Note that there are various races here, since my copy
614 // of _nof_implementors might be out of date with respect
615 // to results returned by InstanceKlass::implementor.
616 // This is OK, since any dependencies we decide to assert
617 // will be checked later under the Compile_lock.
618 ciInstanceKlass* ciInstanceKlass::implementor() {
619 ciInstanceKlass* impl = _implementor;
620 if (impl == nullptr) {
621 if (is_shared()) {
622 impl = this; // assume a well-known interface never has a unique implementor
623 } else {
624 // Go into the VM to fetch the implementor.
625 VM_ENTRY_MARK;
626 InstanceKlass* ik = get_instanceKlass();
627 Klass* implk = ik->implementor();
628 if (implk != nullptr) {
629 if (implk == ik) {
630 // More than one implementors. Use 'this' in this case.
631 impl = this;
632 } else {
633 impl = CURRENT_THREAD_ENV->get_instance_klass(implk);
634 }
635 }
636 }
637 // Memoize this result.
638 _implementor = impl;
639 }
640 return impl;
641 }
642
643 // Utility class for printing of the contents of the static fields for
644 // use by compilation replay. It only prints out the information that
645 // could be consumed by the compiler, so for primitive types it prints
646 // out the actual value. For Strings it's the actual string value.
647 // For array types it it's first level array size since that's the
648 // only value which statically unchangeable. For all other reference
649 // types it simply prints out the dynamic type.
650
651 class StaticFinalFieldPrinter : public FieldClosure {
652 outputStream* _out;
653 const char* _holder;
654 public:
655 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
656 _out(out),
657 _holder(holder) {
658 }
659 void do_field(fieldDescriptor* fd) {
660 if (fd->is_final() && !fd->has_initial_value()) {
661 ResourceMark rm;
662 oop mirror = fd->field_holder()->java_mirror();
663 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
664 switch (fd->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 _out->print_cr("null");
686 } else if (value->is_instance()) {
687 assert(fd->field_type() == T_OBJECT, "");
688 if (value->is_a(vmClasses::String_klass())) {
689 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
690 _out->print_cr("\"%s\"", (ascii_value != nullptr) ? ascii_value : "");
691 } else {
692 const char* klass_name = value->klass()->name()->as_quoted_ascii();
693 _out->print_cr("%s", klass_name);
694 }
695 } else if (value->is_array()) {
696 typeArrayOop ta = (typeArrayOop)value;
697 _out->print("%d", ta->length());
698 if (value->is_objArray()) {
699 objArrayOop oa = (objArrayOop)value;
700 const char* klass_name = value->klass()->name()->as_quoted_ascii();
701 _out->print(" %s", klass_name);
702 }
703 _out->cr();
704 } else {
705 ShouldNotReachHere();
706 }
707 break;
708 }
709 default:
710 ShouldNotReachHere();
711 }
712 }
713 }
714 };
715
716 const char *ciInstanceKlass::replay_name() const {
717 return CURRENT_ENV->replay_name(get_instanceKlass());
718 }
719
720 void ciInstanceKlass::dump_replay_instanceKlass(outputStream* out, InstanceKlass* ik) {
721 if (ik->is_hidden()) {
722 const char *name = CURRENT_ENV->dyno_name(ik);
723 if (name != nullptr) {
724 out->print_cr("instanceKlass %s # %s", name, ik->name()->as_quoted_ascii());
725 } else {
726 out->print_cr("# instanceKlass %s", ik->name()->as_quoted_ascii());
727 }
728 } else {
729 out->print_cr("instanceKlass %s", ik->name()->as_quoted_ascii());
730 }
731 }
732
733 GrowableArray<ciInstanceKlass*>* ciInstanceKlass::transitive_interfaces() const{
734 if (_transitive_interfaces == nullptr) {
735 const_cast<ciInstanceKlass*>(this)->compute_transitive_interfaces();
736 }
737 return _transitive_interfaces;
738 }
739
740 void ciInstanceKlass::compute_transitive_interfaces() {
741 GUARDED_VM_ENTRY(
742 InstanceKlass* ik = get_instanceKlass();
743 Array<InstanceKlass*>* interfaces = ik->transitive_interfaces();
744 int orig_length = interfaces->length();
745 Arena* arena = CURRENT_ENV->arena();
746 int transitive_interfaces_len = orig_length + (is_interface() ? 1 : 0);
747 GrowableArray<ciInstanceKlass*>* transitive_interfaces = new(arena)GrowableArray<ciInstanceKlass*>(arena, transitive_interfaces_len,
748 0, nullptr);
749 for (int i = 0; i < orig_length; i++) {
750 transitive_interfaces->append(CURRENT_ENV->get_instance_klass(interfaces->at(i)));
751 }
752 if (is_interface()) {
753 transitive_interfaces->append(this);
754 }
755 _transitive_interfaces = transitive_interfaces;
756 );
757 }
758
759 void ciInstanceKlass::dump_replay_data(outputStream* out) {
760 ResourceMark rm;
761
762 InstanceKlass* ik = get_instanceKlass();
763 ConstantPool* cp = ik->constants();
764
765 // Try to record related loaded classes
766 Klass* sub = ik->subklass();
767 while (sub != nullptr) {
768 if (sub->is_instance_klass()) {
769 InstanceKlass *isub = InstanceKlass::cast(sub);
770 dump_replay_instanceKlass(out, isub);
771 }
772 sub = sub->next_sibling();
773 }
774
775 // Dump out the state of the constant pool tags. During replay the
776 // tags will be validated for things which shouldn't change and
777 // classes will be resolved if the tags indicate that they were
778 // resolved at compile time.
779 const char *name = replay_name();
780 out->print("ciInstanceKlass %s %d %d %d", name,
781 is_linked(), is_initialized(), cp->length());
782 for (int index = 1; index < cp->length(); index++) {
783 out->print(" %d", cp->tags()->at(index));
784 }
785 out->cr();
786 if (is_initialized()) {
787 // Dump out the static final fields in case the compilation relies
788 // on their value for correct replay.
789 StaticFinalFieldPrinter sffp(out, name);
790 ik->do_local_static_fields(&sffp);
791 }
792 }
793
794 #ifdef ASSERT
795 bool ciInstanceKlass::debug_final_field_at(int offset) {
796 GUARDED_VM_ENTRY(
797 InstanceKlass* ik = get_instanceKlass();
798 fieldDescriptor fd;
799 if (ik->find_field_from_offset(offset, false, &fd)) {
800 return fd.is_final();
801 }
802 );
803 return false;
804 }
805
806 bool ciInstanceKlass::debug_stable_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_stable();
812 }
813 );
814 return false;
815 }
816 #endif