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 assert(get_instanceKlass()->is_loaded(), "must be at least loaded");
57 InstanceKlass* ik = get_instanceKlass();
97 }
98
99 _has_trusted_loader = compute_has_trusted_loader();
100
101 // Lazy fields get filled in only upon request.
102 _super = nullptr;
103 _java_mirror = nullptr;
104
105 if (is_shared()) {
106 if (k != vmClasses::Object_klass()) {
107 super();
108 }
109 //compute_nonstatic_fields(); // done outside of constructor
110 }
111
112 _field_cache = nullptr;
113 }
114
115 // Version for unloaded classes:
116 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
117 jobject loader)
118 : ciKlass(name, T_OBJECT)
119 {
120 assert(name->char_at(0) != JVM_SIGNATURE_ARRAY, "not an instance klass");
121 _init_state = (InstanceKlass::ClassState)0;
122 _has_nonstatic_fields = false;
123 _nonstatic_fields = nullptr;
124 _has_injected_fields = -1;
125 _is_hidden = false;
126 _is_record = false;
127 _loader = loader;
128 _is_shared = false;
129 _super = nullptr;
130 _java_mirror = nullptr;
131 _field_cache = nullptr;
132 _has_trusted_loader = compute_has_trusted_loader();
133 }
134
135
136
137 // ------------------------------------------------------------------
138 // ciInstanceKlass::compute_shared_is_initialized
139 void ciInstanceKlass::compute_shared_init_state() {
140 GUARDED_VM_ENTRY(
141 InstanceKlass* ik = get_instanceKlass();
142 _init_state = ik->init_state();
143 )
301 if (name()->index_of_at(len+1, "/", 1) >= 0)
302 return false;
303
304 return true;
305 }
306
307 // ------------------------------------------------------------------
308 // ciInstanceKlass::print_impl
309 //
310 // Implementation of the print method.
311 void ciInstanceKlass::print_impl(outputStream* st) {
312 ciKlass::print_impl(st);
313 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i(loader()));)
314 if (is_loaded()) {
315 st->print(" initialized=%s finalized=%s subklass=%s size=%d flags=",
316 bool_to_str(is_initialized()),
317 bool_to_str(has_finalizer()),
318 bool_to_str(has_subklass()),
319 layout_helper());
320
321 _flags.print_klass_flags();
322
323 if (_super) {
324 st->print(" super=");
325 _super->print_name();
326 }
327 if (_java_mirror) {
328 st->print(" mirror=PRESENT");
329 }
330 }
331 }
332
333 // ------------------------------------------------------------------
334 // ciInstanceKlass::super
335 //
336 // Get the superklass of this klass.
337 ciInstanceKlass* ciInstanceKlass::super() {
338 assert(is_loaded(), "must be loaded");
339 if (_super == nullptr && !is_java_lang_Object()) {
340 GUARDED_VM_ENTRY(
341 Klass* super_klass = get_instanceKlass()->super();
342 _super = CURRENT_ENV->get_instance_klass(super_klass);
343 )
344 }
345 return _super;
399 ciField* field = _nonstatic_fields->at(i);
400 int field_off = field->offset_in_bytes();
401 if (field_off == field_offset)
402 return field;
403 if (field_off > field_offset)
404 break;
405 // could do binary search or check bins, but probably not worth it
406 }
407 return nullptr;
408 }
409 VM_ENTRY_MARK;
410 InstanceKlass* k = get_instanceKlass();
411 fieldDescriptor fd;
412 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
413 return nullptr;
414 }
415 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
416 return field;
417 }
418
419 // ------------------------------------------------------------------
420 // ciInstanceKlass::get_field_by_name
421 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
422 VM_ENTRY_MARK;
423 InstanceKlass* k = get_instanceKlass();
424 fieldDescriptor fd;
425 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
426 if (def == nullptr) {
427 return nullptr;
428 }
429 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
430 return field;
431 }
432
433
434 static int sort_field_by_offset(ciField** a, ciField** b) {
435 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
436 // (no worries about 32-bit overflow...)
437 }
438
457 int super_flen = super->nof_nonstatic_fields();
458 super_fields = super->_nonstatic_fields;
459 assert(super_flen == 0 || super_fields != nullptr, "first get nof_fields");
460 }
461
462 GrowableArray<ciField*>* fields = nullptr;
463 GUARDED_VM_ENTRY({
464 fields = compute_nonstatic_fields_impl(super_fields);
465 });
466
467 if (fields == nullptr) {
468 // This can happen if this class (java.lang.Class) has invisible fields.
469 if (super_fields != nullptr) {
470 _nonstatic_fields = super_fields;
471 return super_fields->length();
472 } else {
473 return 0;
474 }
475 }
476
477 int flen = fields->length();
478
479 // Now sort them by offset, ascending.
480 // (In principle, they could mix with superclass fields.)
481 fields->sort(sort_field_by_offset);
482 _nonstatic_fields = fields;
483 return flen;
484 }
485
486 GrowableArray<ciField*>*
487 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
488 super_fields) {
489 ASSERT_IN_VM;
490 Arena* arena = CURRENT_ENV->arena();
491 int flen = 0;
492 GrowableArray<ciField*>* fields = nullptr;
493 InstanceKlass* k = get_instanceKlass();
494 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
495 if (fs.access_flags().is_static()) continue;
496 flen += 1;
497 }
498
499 // allocate the array:
500 if (flen == 0) {
501 return nullptr; // return nothing if none are locally declared
502 }
503 if (super_fields != nullptr) {
504 flen += super_fields->length();
505 }
506 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, nullptr);
507 if (super_fields != nullptr) {
508 fields->appendAll(super_fields);
509 }
510
511 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
512 if (fs.access_flags().is_static()) continue;
513 fieldDescriptor& fd = fs.field_descriptor();
514 ciField* field = new (arena) ciField(&fd);
515 fields->append(field);
516 }
517 assert(fields->length() == flen, "sanity");
518 return fields;
519 }
520
521 bool ciInstanceKlass::compute_injected_fields_helper() {
522 ASSERT_IN_VM;
523 InstanceKlass* k = get_instanceKlass();
524
525 for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
526 if (fs.access_flags().is_static()) continue;
527 return true;
528 }
529 return false;
530 }
531
532 void ciInstanceKlass::compute_injected_fields() {
533 assert(is_loaded(), "must be loaded");
534
535 int has_injected_fields = 0;
536 if (super() != nullptr && super()->has_injected_fields()) {
537 has_injected_fields = 1;
604 } else {
605 // Go into the VM to fetch the implementor.
606 VM_ENTRY_MARK;
607 InstanceKlass* ik = get_instanceKlass();
608 Klass* implk = ik->implementor();
609 if (implk != nullptr) {
610 if (implk == ik) {
611 // More than one implementors. Use 'this' in this case.
612 impl = this;
613 } else {
614 impl = CURRENT_THREAD_ENV->get_instance_klass(implk);
615 }
616 }
617 }
618 // Memoize this result.
619 _implementor = impl;
620 }
621 return impl;
622 }
623
624 // Utility class for printing of the contents of the static fields for
625 // use by compilation replay. It only prints out the information that
626 // could be consumed by the compiler, so for primitive types it prints
627 // out the actual value. For Strings it's the actual string value.
628 // For array types it it's first level array size since that's the
629 // only value which statically unchangeable. For all other reference
630 // types it simply prints out the dynamic type.
631
632 class StaticFinalFieldPrinter : public FieldClosure {
633 outputStream* _out;
634 const char* _holder;
635 public:
636 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
637 _out(out),
638 _holder(holder) {
639 }
640 void do_field(fieldDescriptor* fd) {
641 if (fd->is_final() && !fd->has_initial_value()) {
642 ResourceMark rm;
643 oop mirror = fd->field_holder()->java_mirror();
644 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
645 BasicType field_type = fd->field_type();
646 switch (field_type) {
647 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break;
648 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break;
649 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break;
650 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break;
651 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break;
652 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
653 case T_FLOAT: {
654 float f = mirror->float_field(fd->offset());
655 _out->print_cr("%d", *(int*)&f);
656 break;
657 }
658 case T_DOUBLE: {
659 double d = mirror->double_field(fd->offset());
660 _out->print_cr(INT64_FORMAT, *(int64_t*)&d);
661 break;
662 }
663 case T_ARRAY: // fall-through
664 case T_OBJECT: {
665 oop value = mirror->obj_field_acquire(fd->offset());
666 if (value == nullptr) {
667 if (field_type == T_ARRAY) {
668 _out->print("%d", -1);
669 }
670 _out->cr();
671 } else if (value->is_instance()) {
672 assert(field_type == T_OBJECT, "");
673 if (value->is_a(vmClasses::String_klass())) {
674 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
675 _out->print_cr("\"%s\"", (ascii_value != nullptr) ? ascii_value : "");
676 } else {
677 const char* klass_name = value->klass()->name()->as_quoted_ascii();
678 _out->print_cr("%s", klass_name);
679 }
680 } else if (value->is_array()) {
681 typeArrayOop ta = (typeArrayOop)value;
682 _out->print("%d", ta->length());
683 if (value->is_objArray()) {
684 objArrayOop oa = (objArrayOop)value;
685 const char* klass_name = value->klass()->name()->as_quoted_ascii();
686 _out->print(" %s", klass_name);
687 }
688 _out->cr();
689 } else {
690 ShouldNotReachHere();
691 }
692 break;
693 }
694 default:
695 ShouldNotReachHere();
696 }
697 }
698 }
699 };
700
701 const char *ciInstanceKlass::replay_name() const {
702 return CURRENT_ENV->replay_name(get_instanceKlass());
703 }
704
705 void ciInstanceKlass::dump_replay_instanceKlass(outputStream* out, InstanceKlass* ik) {
706 if (ik->is_hidden()) {
707 const char *name = CURRENT_ENV->dyno_name(ik);
708 if (name != nullptr) {
709 out->print_cr("instanceKlass %s # %s", name, ik->name()->as_quoted_ascii());
710 } else {
711 out->print_cr("# instanceKlass %s", ik->name()->as_quoted_ascii());
712 }
713 } else {
714 out->print_cr("instanceKlass %s", ik->name()->as_quoted_ascii());
715 }
716 }
717
718 GrowableArray<ciInstanceKlass*>* ciInstanceKlass::transitive_interfaces() const{
719 if (_transitive_interfaces == nullptr) {
|
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/ciInlineKlass.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/systemDictionary.hpp"
32 #include "classfile/vmClasses.hpp"
33 #include "memory/allocation.hpp"
34 #include "memory/allocation.inline.hpp"
35 #include "memory/resourceArea.hpp"
36 #include "oops/instanceKlass.inline.hpp"
37 #include "oops/klass.inline.hpp"
38 #include "oops/oop.inline.hpp"
39 #include "oops/fieldStreams.inline.hpp"
40 #include "oops/inlineKlass.inline.hpp"
41 #include "runtime/fieldDescriptor.inline.hpp"
42 #include "runtime/handles.inline.hpp"
43 #include "runtime/jniHandles.inline.hpp"
44
45 // ciInstanceKlass
46 //
47 // This class represents a Klass* in the HotSpot virtual machine
48 // whose Klass part in an InstanceKlass.
49
50
51 // ------------------------------------------------------------------
52 // ciInstanceKlass::ciInstanceKlass
53 //
54 // Loaded instance klass.
55 ciInstanceKlass::ciInstanceKlass(Klass* k) :
56 ciKlass(k)
57 {
58 assert(get_Klass()->is_instance_klass(), "wrong type");
59 assert(get_instanceKlass()->is_loaded(), "must be at least loaded");
60 InstanceKlass* ik = get_instanceKlass();
100 }
101
102 _has_trusted_loader = compute_has_trusted_loader();
103
104 // Lazy fields get filled in only upon request.
105 _super = nullptr;
106 _java_mirror = nullptr;
107
108 if (is_shared()) {
109 if (k != vmClasses::Object_klass()) {
110 super();
111 }
112 //compute_nonstatic_fields(); // done outside of constructor
113 }
114
115 _field_cache = nullptr;
116 }
117
118 // Version for unloaded classes:
119 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
120 jobject loader,
121 BasicType bt)
122 : ciKlass(name, bt)
123 {
124 assert(name->char_at(0) != JVM_SIGNATURE_ARRAY, "not an instance klass");
125 _init_state = (InstanceKlass::ClassState)0;
126 _has_nonstatic_fields = false;
127 _nonstatic_fields = nullptr; // initialized lazily by compute_nonstatic_fields
128 _has_injected_fields = -1;
129 _is_hidden = false;
130 _is_record = false;
131 _loader = loader;
132 _is_shared = false;
133 _super = nullptr;
134 _java_mirror = nullptr;
135 _field_cache = nullptr;
136 _has_trusted_loader = compute_has_trusted_loader();
137 }
138
139
140
141 // ------------------------------------------------------------------
142 // ciInstanceKlass::compute_shared_is_initialized
143 void ciInstanceKlass::compute_shared_init_state() {
144 GUARDED_VM_ENTRY(
145 InstanceKlass* ik = get_instanceKlass();
146 _init_state = ik->init_state();
147 )
305 if (name()->index_of_at(len+1, "/", 1) >= 0)
306 return false;
307
308 return true;
309 }
310
311 // ------------------------------------------------------------------
312 // ciInstanceKlass::print_impl
313 //
314 // Implementation of the print method.
315 void ciInstanceKlass::print_impl(outputStream* st) {
316 ciKlass::print_impl(st);
317 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i(loader()));)
318 if (is_loaded()) {
319 st->print(" initialized=%s finalized=%s subklass=%s size=%d flags=",
320 bool_to_str(is_initialized()),
321 bool_to_str(has_finalizer()),
322 bool_to_str(has_subklass()),
323 layout_helper());
324
325 _flags.print_klass_flags(st);
326
327 if (_super) {
328 st->print(" super=");
329 _super->print_name_on(st);
330 }
331 if (_java_mirror) {
332 st->print(" mirror=PRESENT");
333 }
334 }
335 }
336
337 // ------------------------------------------------------------------
338 // ciInstanceKlass::super
339 //
340 // Get the superklass of this klass.
341 ciInstanceKlass* ciInstanceKlass::super() {
342 assert(is_loaded(), "must be loaded");
343 if (_super == nullptr && !is_java_lang_Object()) {
344 GUARDED_VM_ENTRY(
345 Klass* super_klass = get_instanceKlass()->super();
346 _super = CURRENT_ENV->get_instance_klass(super_klass);
347 )
348 }
349 return _super;
403 ciField* field = _nonstatic_fields->at(i);
404 int field_off = field->offset_in_bytes();
405 if (field_off == field_offset)
406 return field;
407 if (field_off > field_offset)
408 break;
409 // could do binary search or check bins, but probably not worth it
410 }
411 return nullptr;
412 }
413 VM_ENTRY_MARK;
414 InstanceKlass* k = get_instanceKlass();
415 fieldDescriptor fd;
416 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
417 return nullptr;
418 }
419 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
420 return field;
421 }
422
423 ciField* ciInstanceKlass::get_non_flat_field_by_offset(int field_offset) {
424 if (super() != nullptr && super()->has_nonstatic_fields()) {
425 ciField* f = super()->get_non_flat_field_by_offset(field_offset);
426 if (f != nullptr) {
427 return f;
428 }
429 }
430
431 VM_ENTRY_MARK;
432 InstanceKlass* k = get_instanceKlass();
433 Arena* arena = CURRENT_ENV->arena();
434 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
435 if (fs.access_flags().is_static()) continue;
436 fieldDescriptor& fd = fs.field_descriptor();
437 if (fd.offset() == field_offset) {
438 ciField* f = new (arena) ciField(&fd);
439 return f;
440 }
441 }
442
443 return nullptr;
444 }
445
446 // ------------------------------------------------------------------
447 // ciInstanceKlass::get_field_by_name
448 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
449 VM_ENTRY_MARK;
450 InstanceKlass* k = get_instanceKlass();
451 fieldDescriptor fd;
452 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
453 if (def == nullptr) {
454 return nullptr;
455 }
456 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
457 return field;
458 }
459
460
461 static int sort_field_by_offset(ciField** a, ciField** b) {
462 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
463 // (no worries about 32-bit overflow...)
464 }
465
484 int super_flen = super->nof_nonstatic_fields();
485 super_fields = super->_nonstatic_fields;
486 assert(super_flen == 0 || super_fields != nullptr, "first get nof_fields");
487 }
488
489 GrowableArray<ciField*>* fields = nullptr;
490 GUARDED_VM_ENTRY({
491 fields = compute_nonstatic_fields_impl(super_fields);
492 });
493
494 if (fields == nullptr) {
495 // This can happen if this class (java.lang.Class) has invisible fields.
496 if (super_fields != nullptr) {
497 _nonstatic_fields = super_fields;
498 return super_fields->length();
499 } else {
500 return 0;
501 }
502 }
503
504 _nonstatic_fields = fields;
505 return fields->length();
506 }
507
508 GrowableArray<ciField*>* ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields, bool is_flat) {
509 ASSERT_IN_VM;
510 Arena* arena = CURRENT_ENV->arena();
511 int flen = 0;
512 GrowableArray<ciField*>* fields = nullptr;
513 InstanceKlass* k = get_instanceKlass();
514 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
515 if (fs.access_flags().is_static()) continue;
516 flen += 1;
517 }
518
519 // allocate the array:
520 if (flen == 0 && !is_inlinetype()) {
521 return nullptr; // return nothing if none are locally declared
522 }
523 if (super_fields != nullptr) {
524 flen += super_fields->length();
525 }
526 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, nullptr);
527 if (super_fields != nullptr) {
528 fields->appendAll(super_fields);
529 }
530
531 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
532 if (fs.access_flags().is_static()) continue;
533 fieldDescriptor& fd = fs.field_descriptor();
534 if (fd.is_flat() && is_flat) {
535 // Inline type fields are embedded
536 int field_offset = fd.offset();
537 // Get InlineKlass and adjust number of fields
538 Klass* k = get_instanceKlass()->get_inline_type_field_klass(fd.index());
539 ciInlineKlass* vk = CURRENT_ENV->get_klass(k)->as_inline_klass();
540 flen += vk->nof_nonstatic_fields() - 1;
541 // Iterate over fields of the flat inline type and copy them to 'this'
542 for (int i = 0; i < vk->nof_nonstatic_fields(); ++i) {
543 ciField* flat_field = vk->nonstatic_field_at(i);
544 // Adjust offset to account for missing oop header
545 int offset = field_offset + (flat_field->offset_in_bytes() - vk->payload_offset());
546 // A flat field can be treated as final if the non-flat
547 // field is declared final or the holder klass is an inline type itself.
548 bool is_final = fd.is_final() || is_inlinetype();
549 ciField* field = new (arena) ciField(flat_field, this, offset, is_final);
550 fields->append(field);
551 }
552 } else {
553 ciField* field = new (arena) ciField(&fd);
554 fields->append(field);
555 }
556 }
557 assert(fields->length() == flen, "sanity");
558 // Now sort them by offset, ascending.
559 // (In principle, they could mix with superclass fields.)
560 fields->sort(sort_field_by_offset);
561 return fields;
562 }
563
564 bool ciInstanceKlass::compute_injected_fields_helper() {
565 ASSERT_IN_VM;
566 InstanceKlass* k = get_instanceKlass();
567
568 for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
569 if (fs.access_flags().is_static()) continue;
570 return true;
571 }
572 return false;
573 }
574
575 void ciInstanceKlass::compute_injected_fields() {
576 assert(is_loaded(), "must be loaded");
577
578 int has_injected_fields = 0;
579 if (super() != nullptr && super()->has_injected_fields()) {
580 has_injected_fields = 1;
647 } else {
648 // Go into the VM to fetch the implementor.
649 VM_ENTRY_MARK;
650 InstanceKlass* ik = get_instanceKlass();
651 Klass* implk = ik->implementor();
652 if (implk != nullptr) {
653 if (implk == ik) {
654 // More than one implementors. Use 'this' in this case.
655 impl = this;
656 } else {
657 impl = CURRENT_THREAD_ENV->get_instance_klass(implk);
658 }
659 }
660 }
661 // Memoize this result.
662 _implementor = impl;
663 }
664 return impl;
665 }
666
667 bool ciInstanceKlass::can_be_inline_klass(bool is_exact) {
668 if (!EnableValhalla) {
669 return false;
670 }
671 if (!is_loaded() || is_inlinetype()) {
672 // Not loaded or known to be an inline klass
673 return true;
674 }
675 if (!is_exact) {
676 // Not exact, check if this is a valid super for an inline klass
677 VM_ENTRY_MARK;
678 return !get_instanceKlass()->access_flags().is_identity_class() || is_java_lang_Object() ;
679 }
680 return false;
681 }
682
683 // Utility class for printing of the contents of the static fields for
684 // use by compilation replay. It only prints out the information that
685 // could be consumed by the compiler, so for primitive types it prints
686 // out the actual value. For Strings it's the actual string value.
687 // For array types it it's first level array size since that's the
688 // only value which statically unchangeable. For all other reference
689 // types it simply prints out the dynamic type.
690
691 class StaticFieldPrinter : public FieldClosure {
692 protected:
693 outputStream* _out;
694 public:
695 StaticFieldPrinter(outputStream* out) :
696 _out(out) {
697 }
698 void do_field_helper(fieldDescriptor* fd, oop obj, bool is_flat);
699 };
700
701 class StaticFinalFieldPrinter : public StaticFieldPrinter {
702 const char* _holder;
703 public:
704 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
705 StaticFieldPrinter(out), _holder(holder) {
706 }
707 void do_field(fieldDescriptor* fd) {
708 if (fd->is_final() && !fd->has_initial_value()) {
709 ResourceMark rm;
710 InstanceKlass* holder = fd->field_holder();
711 oop mirror = holder->java_mirror();
712 _out->print("staticfield %s %s ", _holder, fd->name()->as_quoted_ascii());
713 BasicType bt = fd->field_type();
714 if (bt != T_OBJECT && bt != T_ARRAY) {
715 _out->print("%s ", fd->signature()->as_quoted_ascii());
716 }
717 do_field_helper(fd, mirror, false);
718 _out->cr();
719 }
720 }
721 };
722
723 class InlineTypeFieldPrinter : public StaticFieldPrinter {
724 oop _obj;
725 public:
726 InlineTypeFieldPrinter(outputStream* out, oop obj) :
727 StaticFieldPrinter(out), _obj(obj) {
728 }
729 void do_field(fieldDescriptor* fd) {
730 do_field_helper(fd, _obj, true);
731 _out->print(" ");
732 }
733 };
734
735 void StaticFieldPrinter::do_field_helper(fieldDescriptor* fd, oop mirror, bool is_flat) {
736 BasicType field_type = fd->field_type();
737 switch (field_type) {
738 case T_BYTE: _out->print("%d", mirror->byte_field(fd->offset())); break;
739 case T_BOOLEAN: _out->print("%d", mirror->bool_field(fd->offset())); break;
740 case T_SHORT: _out->print("%d", mirror->short_field(fd->offset())); break;
741 case T_CHAR: _out->print("%d", mirror->char_field(fd->offset())); break;
742 case T_INT: _out->print("%d", mirror->int_field(fd->offset())); break;
743 case T_LONG: _out->print(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
744 case T_FLOAT: {
745 float f = mirror->float_field(fd->offset());
746 _out->print("%d", *(int*)&f);
747 break;
748 }
749 case T_DOUBLE: {
750 double d = mirror->double_field(fd->offset());
751 _out->print(INT64_FORMAT, *(int64_t*)&d);
752 break;
753 }
754 case T_ARRAY: // fall-through
755 case T_OBJECT:
756 if (!fd->is_null_free_inline_type()) {
757 _out->print("%s ", fd->signature()->as_quoted_ascii());
758 oop value = mirror->obj_field_acquire(fd->offset());
759 if (value == nullptr) {
760 if (field_type == T_ARRAY) {
761 _out->print("%d", -1);
762 }
763 _out->cr();
764 } else if (value->is_instance()) {
765 assert(field_type == T_OBJECT, "");
766 if (value->is_a(vmClasses::String_klass())) {
767 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
768 _out->print("\"%s\"", (ascii_value != nullptr) ? ascii_value : "");
769 } else {
770 const char* klass_name = value->klass()->name()->as_quoted_ascii();
771 _out->print("%s", klass_name);
772 }
773 } else if (value->is_array()) {
774 typeArrayOop ta = (typeArrayOop)value;
775 _out->print("%d", ta->length());
776 if (value->is_objArray() || value->is_flatArray()) {
777 objArrayOop oa = (objArrayOop)value;
778 const char* klass_name = value->klass()->name()->as_quoted_ascii();
779 _out->print(" %s", klass_name);
780 }
781 } else {
782 ShouldNotReachHere();
783 }
784 break;
785 } else {
786 // handling of null free inline type
787 ResetNoHandleMark rnhm;
788 Thread* THREAD = Thread::current();
789 SignatureStream ss(fd->signature(), false);
790 Symbol* name = ss.as_symbol();
791 assert(!HAS_PENDING_EXCEPTION, "can resolve klass?");
792 InstanceKlass* holder = fd->field_holder();
793 InstanceKlass* k = SystemDictionary::find_instance_klass(THREAD, name,
794 Handle(THREAD, holder->class_loader()));
795 assert(k != nullptr && !HAS_PENDING_EXCEPTION, "can resolve klass?");
796 InlineKlass* vk = InlineKlass::cast(k);
797 oop obj;
798 if (is_flat) {
799 int field_offset = fd->offset() - vk->payload_offset();
800 obj = cast_to_oop(cast_from_oop<address>(mirror) + field_offset);
801 } else {
802 obj = mirror->obj_field_acquire(fd->offset());
803 }
804 InlineTypeFieldPrinter print_field(_out, obj);
805 vk->do_nonstatic_fields(&print_field);
806 break;
807 }
808 default:
809 ShouldNotReachHere();
810 }
811 }
812
813 const char *ciInstanceKlass::replay_name() const {
814 return CURRENT_ENV->replay_name(get_instanceKlass());
815 }
816
817 void ciInstanceKlass::dump_replay_instanceKlass(outputStream* out, InstanceKlass* ik) {
818 if (ik->is_hidden()) {
819 const char *name = CURRENT_ENV->dyno_name(ik);
820 if (name != nullptr) {
821 out->print_cr("instanceKlass %s # %s", name, ik->name()->as_quoted_ascii());
822 } else {
823 out->print_cr("# instanceKlass %s", ik->name()->as_quoted_ascii());
824 }
825 } else {
826 out->print_cr("instanceKlass %s", ik->name()->as_quoted_ascii());
827 }
828 }
829
830 GrowableArray<ciInstanceKlass*>* ciInstanceKlass::transitive_interfaces() const{
831 if (_transitive_interfaces == nullptr) {
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