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/systemDictionary.hpp"
31 #include "memory/allocation.hpp"
32 #include "memory/allocation.inline.hpp"
33 #include "memory/resourceArea.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "oops/fieldStreams.hpp"
36 #include "runtime/fieldDescriptor.inline.hpp"
37 #include "runtime/handles.inline.hpp"
38 #include "runtime/jniHandles.inline.hpp"
39
40 // ciInstanceKlass
41 //
42 // This class represents a Klass* in the HotSpot virtual machine
43 // whose Klass part in an InstanceKlass.
44
45
46 // ------------------------------------------------------------------
47 // ciInstanceKlass::ciInstanceKlass
48 //
49 // Loaded instance klass.
50 ciInstanceKlass::ciInstanceKlass(Klass* k) :
51 ciKlass(k)
52 {
53 assert(get_Klass()->is_instance_klass(), "wrong type");
54 assert(get_instanceKlass()->is_loaded(), "must be at least loaded");
55 InstanceKlass* ik = get_instanceKlass();
56
57 AccessFlags access_flags = ik->access_flags();
58 _flags = ciFlags(access_flags);
59 _has_finalizer = access_flags.has_finalizer();
60 _has_subklass = flags().is_final() ? subklass_false : subklass_unknown;
61 _init_state = ik->init_state();
62 _nonstatic_field_size = ik->nonstatic_field_size();
63 _has_nonstatic_fields = ik->has_nonstatic_fields();
64 _has_nonstatic_concrete_methods = ik->has_nonstatic_concrete_methods();
65 _is_unsafe_anonymous = ik->is_unsafe_anonymous();
66 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields:
67 _has_injected_fields = -1;
68 _implementor = NULL; // we will fill these lazily
69
70 // Ensure that the metadata wrapped by the ciMetadata is kept alive by GC.
71 // This is primarily useful for metadata which is considered as weak roots
72 // by the GC but need to be strong roots if reachable from a current compilation.
73 // InstanceKlass are created for both weak and strong metadata. Ensuring this metadata
74 // alive covers the cases where there are weak roots without performance cost.
75 oop holder = ik->klass_holder();
76 if (ik->is_unsafe_anonymous()) {
77 // Though ciInstanceKlass records class loader oop, it's not enough to keep
78 // VM unsafe anonymous classes alive (loader == NULL). Klass holder should
79 // be used instead. It is enough to record a ciObject, since cached elements are never removed
80 // during ciObjectFactory lifetime. ciObjectFactory itself is created for
81 // every compilation and lives for the whole duration of the compilation.
82 assert(holder != NULL, "holder of unsafe anonymous class is the mirror which is never null");
83 (void)CURRENT_ENV->get_object(holder);
84 }
85
86 Thread *thread = Thread::current();
87 if (ciObjectFactory::is_initialized()) {
96 _protection_domain = JNIHandles::make_global(h_protection_domain);
97 _is_shared = true;
98 }
99
100 // Lazy fields get filled in only upon request.
101 _super = NULL;
102 _java_mirror = NULL;
103
104 if (is_shared()) {
105 if (k != SystemDictionary::Object_klass()) {
106 super();
107 }
108 //compute_nonstatic_fields(); // done outside of constructor
109 }
110
111 _field_cache = NULL;
112 }
113
114 // Version for unloaded classes:
115 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
116 jobject loader, jobject protection_domain)
117 : ciKlass(name, T_OBJECT)
118 {
119 assert(name->char_at(0) != '[', "not an instance klass");
120 _init_state = (InstanceKlass::ClassState)0;
121 _nonstatic_field_size = -1;
122 _has_nonstatic_fields = false;
123 _nonstatic_fields = NULL;
124 _has_injected_fields = -1;
125 _is_unsafe_anonymous = false;
126 _loader = loader;
127 _protection_domain = protection_domain;
128 _is_shared = false;
129 _super = NULL;
130 _java_mirror = NULL;
131 _field_cache = NULL;
132 }
133
134
135
136 // ------------------------------------------------------------------
137 // ciInstanceKlass::compute_shared_is_initialized
138 void ciInstanceKlass::compute_shared_init_state() {
139 GUARDED_VM_ENTRY(
140 InstanceKlass* ik = get_instanceKlass();
141 _init_state = ik->init_state();
142 )
143 }
144
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 NULL;
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 NULL;
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 == NULL) {
427 return NULL;
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
466 _nonstatic_fields = super_fields;
467 return super_fields->length();
468 }
469 }
470
471 GrowableArray<ciField*>* fields = NULL;
472 GUARDED_VM_ENTRY({
473 fields = compute_nonstatic_fields_impl(super_fields);
474 });
475
476 if (fields == NULL) {
477 // This can happen if this class (java.lang.Class) has invisible fields.
478 if (super_fields != NULL) {
479 _nonstatic_fields = super_fields;
480 return super_fields->length();
481 } else {
482 return 0;
483 }
484 }
485
486 int flen = fields->length();
487
488 // Now sort them by offset, ascending.
489 // (In principle, they could mix with superclass fields.)
490 fields->sort(sort_field_by_offset);
491 _nonstatic_fields = fields;
492 return flen;
493 }
494
495 GrowableArray<ciField*>*
496 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
497 super_fields) {
498 ASSERT_IN_VM;
499 Arena* arena = CURRENT_ENV->arena();
500 int flen = 0;
501 GrowableArray<ciField*>* fields = NULL;
502 InstanceKlass* k = get_instanceKlass();
503 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
504 if (fs.access_flags().is_static()) continue;
505 flen += 1;
506 }
507
508 // allocate the array:
509 if (flen == 0) {
510 return NULL; // return nothing if none are locally declared
511 }
512 if (super_fields != NULL) {
513 flen += super_fields->length();
514 }
515 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL);
516 if (super_fields != NULL) {
517 fields->appendAll(super_fields);
518 }
519
520 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
521 if (fs.access_flags().is_static()) continue;
522 fieldDescriptor& fd = fs.field_descriptor();
523 ciField* field = new (arena) ciField(&fd);
524 fields->append(field);
525 }
526 assert(fields->length() == flen, "sanity");
527 return fields;
528 }
529
530 bool ciInstanceKlass::compute_injected_fields_helper() {
531 ASSERT_IN_VM;
532 InstanceKlass* k = get_instanceKlass();
533
534 for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
535 if (fs.access_flags().is_static()) continue;
536 return true;
537 }
538 return false;
539 }
540
541 void ciInstanceKlass::compute_injected_fields() {
542 assert(is_loaded(), "must be loaded");
543
544 int has_injected_fields = 0;
545 if (super() != NULL && super()->has_injected_fields()) {
546 has_injected_fields = 1;
614 }
615 }
616 // Memoize this result.
617 if (!is_shared()) {
618 _implementor = impl;
619 }
620 }
621 return impl;
622 }
623
624 ciInstanceKlass* ciInstanceKlass::unsafe_anonymous_host() {
625 assert(is_loaded(), "must be loaded");
626 if (is_unsafe_anonymous()) {
627 VM_ENTRY_MARK
628 Klass* unsafe_anonymous_host = get_instanceKlass()->unsafe_anonymous_host();
629 return CURRENT_ENV->get_instance_klass(unsafe_anonymous_host);
630 }
631 return NULL;
632 }
633
634 // Utility class for printing of the contents of the static fields for
635 // use by compilation replay. It only prints out the information that
636 // could be consumed by the compiler, so for primitive types it prints
637 // out the actual value. For Strings it's the actual string value.
638 // For array types it it's first level array size since that's the
639 // only value which statically unchangeable. For all other reference
640 // types it simply prints out the dynamic type.
641
642 class StaticFinalFieldPrinter : public FieldClosure {
643 outputStream* _out;
644 const char* _holder;
645 public:
646 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
647 _out(out),
648 _holder(holder) {
649 }
650 void do_field(fieldDescriptor* fd) {
651 if (fd->is_final() && !fd->has_initial_value()) {
652 ResourceMark rm;
653 oop mirror = fd->field_holder()->java_mirror();
654 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
655 switch (fd->field_type()) {
656 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break;
657 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break;
658 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break;
659 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break;
660 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break;
661 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
662 case T_FLOAT: {
663 float f = mirror->float_field(fd->offset());
664 _out->print_cr("%d", *(int*)&f);
665 break;
666 }
667 case T_DOUBLE: {
668 double d = mirror->double_field(fd->offset());
669 _out->print_cr(INT64_FORMAT, *(int64_t*)&d);
670 break;
671 }
672 case T_ARRAY: // fall-through
673 case T_OBJECT: {
674 oop value = mirror->obj_field_acquire(fd->offset());
675 if (value == NULL) {
676 _out->print_cr("null");
677 } else if (value->is_instance()) {
678 assert(fd->field_type() == T_OBJECT, "");
679 if (value->is_a(SystemDictionary::String_klass())) {
680 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
681 _out->print("\"%s\"", (ascii_value != NULL) ? ascii_value : "");
682 } else {
683 const char* klass_name = value->klass()->name()->as_quoted_ascii();
684 _out->print_cr("%s", klass_name);
685 }
686 } else if (value->is_array()) {
687 typeArrayOop ta = (typeArrayOop)value;
688 _out->print("%d", ta->length());
689 if (value->is_objArray()) {
690 objArrayOop oa = (objArrayOop)value;
691 const char* klass_name = value->klass()->name()->as_quoted_ascii();
692 _out->print(" %s", klass_name);
693 }
694 _out->cr();
695 } else {
696 ShouldNotReachHere();
697 }
698 break;
699 }
700 default:
701 ShouldNotReachHere();
702 }
703 }
704 }
705 };
706
707
708 void ciInstanceKlass::dump_replay_data(outputStream* out) {
709 ResourceMark rm;
710
711 InstanceKlass* ik = get_instanceKlass();
712 ConstantPool* cp = ik->constants();
713
714 // Try to record related loaded classes
715 Klass* sub = ik->subklass();
716 while (sub != NULL) {
717 if (sub->is_instance_klass()) {
718 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii());
719 }
720 sub = sub->next_sibling();
721 }
722
723 // Dump out the state of the constant pool tags. During replay the
724 // tags will be validated for things which shouldn't change and
725 // classes will be resolved if the tags indicate that they were
|
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 "ci/ciValueKlass.hpp"
31 #include "classfile/systemDictionary.hpp"
32 #include "memory/allocation.hpp"
33 #include "memory/allocation.inline.hpp"
34 #include "memory/resourceArea.hpp"
35 #include "oops/oop.inline.hpp"
36 #include "oops/fieldStreams.hpp"
37 #include "oops/valueKlass.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 = access_flags.has_finalizer();
62 _has_subklass = flags().is_final() ? subklass_false : subklass_unknown;
63 _init_state = ik->init_state();
64 _nonstatic_field_size = ik->nonstatic_field_size();
65 _has_nonstatic_fields = ik->has_nonstatic_fields();
66 _has_nonstatic_concrete_methods = ik->has_nonstatic_concrete_methods();
67 _is_unsafe_anonymous = ik->is_unsafe_anonymous();
68 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields
69 _has_injected_fields = -1;
70 _vcc_klass = NULL;
71 _implementor = NULL; // we will fill these lazily
72
73 // Ensure that the metadata wrapped by the ciMetadata is kept alive by GC.
74 // This is primarily useful for metadata which is considered as weak roots
75 // by the GC but need to be strong roots if reachable from a current compilation.
76 // InstanceKlass are created for both weak and strong metadata. Ensuring this metadata
77 // alive covers the cases where there are weak roots without performance cost.
78 oop holder = ik->klass_holder();
79 if (ik->is_unsafe_anonymous()) {
80 // Though ciInstanceKlass records class loader oop, it's not enough to keep
81 // VM unsafe anonymous classes alive (loader == NULL). Klass holder should
82 // be used instead. It is enough to record a ciObject, since cached elements are never removed
83 // during ciObjectFactory lifetime. ciObjectFactory itself is created for
84 // every compilation and lives for the whole duration of the compilation.
85 assert(holder != NULL, "holder of unsafe anonymous class is the mirror which is never null");
86 (void)CURRENT_ENV->get_object(holder);
87 }
88
89 Thread *thread = Thread::current();
90 if (ciObjectFactory::is_initialized()) {
99 _protection_domain = JNIHandles::make_global(h_protection_domain);
100 _is_shared = true;
101 }
102
103 // Lazy fields get filled in only upon request.
104 _super = NULL;
105 _java_mirror = NULL;
106
107 if (is_shared()) {
108 if (k != SystemDictionary::Object_klass()) {
109 super();
110 }
111 //compute_nonstatic_fields(); // done outside of constructor
112 }
113
114 _field_cache = NULL;
115 }
116
117 // Version for unloaded classes:
118 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
119 jobject loader, jobject protection_domain,
120 BasicType bt)
121 : ciKlass(name, bt)
122 {
123 assert(name->char_at(0) != '[', "not an instance klass");
124 _init_state = (InstanceKlass::ClassState)0;
125 _nonstatic_field_size = -1;
126 _has_nonstatic_fields = false;
127 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields
128 _has_injected_fields = -1;
129 _vcc_klass = NULL;
130 _is_unsafe_anonymous = false;
131 _loader = loader;
132 _protection_domain = protection_domain;
133 _is_shared = false;
134 _super = NULL;
135 _java_mirror = NULL;
136 _field_cache = NULL;
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 )
148 }
149
404 ciField* field = _nonstatic_fields->at(i);
405 int field_off = field->offset_in_bytes();
406 if (field_off == field_offset)
407 return field;
408 if (field_off > field_offset)
409 break;
410 // could do binary search or check bins, but probably not worth it
411 }
412 return NULL;
413 }
414 VM_ENTRY_MARK;
415 InstanceKlass* k = get_instanceKlass();
416 fieldDescriptor fd;
417 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
418 return NULL;
419 }
420 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
421 return field;
422 }
423
424 ciField* ciInstanceKlass::get_non_flattened_field_by_offset(int field_offset) {
425 if (super() != NULL && super()->has_nonstatic_fields()) {
426 ciField* f = super()->get_non_flattened_field_by_offset(field_offset);
427 if (f != NULL) {
428 return f;
429 }
430 }
431
432 VM_ENTRY_MARK;
433 InstanceKlass* k = get_instanceKlass();
434 Arena* arena = CURRENT_ENV->arena();
435 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
436 if (fs.access_flags().is_static()) continue;
437 fieldDescriptor& fd = fs.field_descriptor();
438 if (fd.offset() == field_offset) {
439 ciField* f = new (arena) ciField(&fd);
440 return f;
441 }
442 }
443
444 return NULL;
445 }
446
447 // ------------------------------------------------------------------
448 // ciInstanceKlass::get_field_by_name
449 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
450 VM_ENTRY_MARK;
451 InstanceKlass* k = get_instanceKlass();
452 fieldDescriptor fd;
453 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
454 if (def == NULL) {
455 return NULL;
456 }
457 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
458 return field;
459 }
460
461
462 static int sort_field_by_offset(ciField** a, ciField** b) {
463 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
464 // (no worries about 32-bit overflow...)
465 }
466
494 _nonstatic_fields = super_fields;
495 return super_fields->length();
496 }
497 }
498
499 GrowableArray<ciField*>* fields = NULL;
500 GUARDED_VM_ENTRY({
501 fields = compute_nonstatic_fields_impl(super_fields);
502 });
503
504 if (fields == NULL) {
505 // This can happen if this class (java.lang.Class) has invisible fields.
506 if (super_fields != NULL) {
507 _nonstatic_fields = super_fields;
508 return super_fields->length();
509 } else {
510 return 0;
511 }
512 }
513
514 _nonstatic_fields = fields;
515 return fields->length();
516 }
517
518 GrowableArray<ciField*>* ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>* super_fields, bool flatten) {
519 ASSERT_IN_VM;
520 Arena* arena = CURRENT_ENV->arena();
521 int flen = 0;
522 GrowableArray<ciField*>* fields = NULL;
523 InstanceKlass* k = get_instanceKlass();
524 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
525 if (fs.access_flags().is_static()) continue;
526 flen += 1;
527 }
528
529 // allocate the array:
530 if (flen == 0) {
531 return NULL; // return nothing if none are locally declared
532 }
533 if (super_fields != NULL) {
534 flen += super_fields->length();
535 }
536
537 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL);
538 if (super_fields != NULL) {
539 fields->appendAll(super_fields);
540 }
541
542 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
543 if (fs.access_flags().is_static()) continue;
544 fieldDescriptor& fd = fs.field_descriptor();
545 if (fd.is_flattened() && flatten) {
546 // Value type fields are embedded
547 int field_offset = fd.offset();
548 // Get ValueKlass and adjust number of fields
549 Klass* k = get_instanceKlass()->get_value_field_klass(fd.index());
550 ciValueKlass* vk = CURRENT_ENV->get_klass(k)->as_value_klass();
551 flen += vk->nof_nonstatic_fields() - 1;
552 // Iterate over fields of the flattened value type and copy them to 'this'
553 for (int i = 0; i < vk->nof_nonstatic_fields(); ++i) {
554 ciField* flattened_field = vk->nonstatic_field_at(i);
555 // Adjust offset to account for missing oop header
556 int offset = field_offset + (flattened_field->offset() - vk->first_field_offset());
557 // A flattened field can be treated as final if the non-flattened
558 // field is declared final or the holder klass is a value type itself.
559 bool is_final = fd.is_final() || is_valuetype();
560 ciField* field = new (arena) ciField(flattened_field, this, offset, is_final);
561 fields->append(field);
562 }
563 } else {
564 ciField* field = new (arena) ciField(&fd);
565 fields->append(field);
566 }
567 }
568 assert(fields->length() == flen, "sanity");
569 // Now sort them by offset, ascending.
570 // (In principle, they could mix with superclass fields.)
571 fields->sort(sort_field_by_offset);
572 return fields;
573 }
574
575 bool ciInstanceKlass::compute_injected_fields_helper() {
576 ASSERT_IN_VM;
577 InstanceKlass* k = get_instanceKlass();
578
579 for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
580 if (fs.access_flags().is_static()) continue;
581 return true;
582 }
583 return false;
584 }
585
586 void ciInstanceKlass::compute_injected_fields() {
587 assert(is_loaded(), "must be loaded");
588
589 int has_injected_fields = 0;
590 if (super() != NULL && super()->has_injected_fields()) {
591 has_injected_fields = 1;
659 }
660 }
661 // Memoize this result.
662 if (!is_shared()) {
663 _implementor = impl;
664 }
665 }
666 return impl;
667 }
668
669 ciInstanceKlass* ciInstanceKlass::unsafe_anonymous_host() {
670 assert(is_loaded(), "must be loaded");
671 if (is_unsafe_anonymous()) {
672 VM_ENTRY_MARK
673 Klass* unsafe_anonymous_host = get_instanceKlass()->unsafe_anonymous_host();
674 return CURRENT_ENV->get_instance_klass(unsafe_anonymous_host);
675 }
676 return NULL;
677 }
678
679 ciInstanceKlass* ciInstanceKlass::vcc_klass() {
680 return NULL;
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 flattened);
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 ValueTypeFieldPrinter : public StaticFieldPrinter {
724 oop _obj;
725 public:
726 ValueTypeFieldPrinter(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 flattened) {
736 BasicType bt = fd->field_type();
737 switch (bt) {
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 oop value = mirror->obj_field_acquire(fd->offset());
757 if (value == NULL) {
758 _out->print_cr("null");
759 } else if (value->is_instance()) {
760 assert(fd->field_type() == T_OBJECT, "");
761 if (value->is_a(SystemDictionary::String_klass())) {
762 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
763 _out->print("\"%s\"", (ascii_value != NULL) ? ascii_value : "");
764 } else {
765 const char* klass_name = value->klass()->name()->as_quoted_ascii();
766 _out->print_cr("%s", klass_name);
767 }
768 } else if (value->is_array()) {
769 typeArrayOop ta = (typeArrayOop)value;
770 _out->print("%d", ta->length());
771 if (value->is_objArray() || value->is_valueArray()) {
772 objArrayOop oa = (objArrayOop)value;
773 const char* klass_name = value->klass()->name()->as_quoted_ascii();
774 _out->print(" %s", klass_name);
775 }
776 _out->cr();
777 } else {
778 ShouldNotReachHere();
779 }
780 break;
781 }
782 case T_VALUETYPE: {
783 ResetNoHandleMark rnhm;
784 Thread* THREAD = Thread::current();
785 SignatureStream ss(fd->signature(), false);
786 Symbol* name = ss.as_symbol(THREAD);
787 assert(!HAS_PENDING_EXCEPTION, "can resolve klass?");
788 InstanceKlass* holder = fd->field_holder();
789 Klass* k = SystemDictionary::find(name, Handle(THREAD, holder->class_loader()),
790 Handle(THREAD, holder->protection_domain()), THREAD);
791 assert(k != NULL && !HAS_PENDING_EXCEPTION, "can resolve klass?");
792 ValueKlass* vk = ValueKlass::cast(k);
793 oop obj;
794 if (flattened) {
795 int field_offset = fd->offset() - vk->first_field_offset();
796 obj = (oop)((address)mirror + field_offset);
797 } else {
798 obj = mirror->obj_field_acquire(fd->offset());
799 }
800 ValueTypeFieldPrinter print_field(_out, obj);
801 vk->do_nonstatic_fields(&print_field);
802 break;
803 }
804 default:
805 ShouldNotReachHere();
806 }
807 }
808
809
810 void ciInstanceKlass::dump_replay_data(outputStream* out) {
811 ResourceMark rm;
812
813 InstanceKlass* ik = get_instanceKlass();
814 ConstantPool* cp = ik->constants();
815
816 // Try to record related loaded classes
817 Klass* sub = ik->subklass();
818 while (sub != NULL) {
819 if (sub->is_instance_klass()) {
820 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii());
821 }
822 sub = sub->next_sibling();
823 }
824
825 // Dump out the state of the constant pool tags. During replay the
826 // tags will be validated for things which shouldn't change and
827 // classes will be resolved if the tags indicate that they were
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