1 /*
2 * Copyright (c) 1999, 2020, 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/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.inline.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()) {
88 _loader = JNIHandles::make_local(thread, ik->class_loader());
89 _protection_domain = JNIHandles::make_local(thread,
90 ik->protection_domain());
91 _is_shared = false;
92 } else {
93 Handle h_loader(thread, ik->class_loader());
94 Handle h_protection_domain(thread, ik->protection_domain());
95 _loader = JNIHandles::make_global(h_loader);
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) != JVM_SIGNATURE_ARRAY, "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
145 // ------------------------------------------------------------------
146 // ciInstanceKlass::compute_shared_has_subklass
147 bool ciInstanceKlass::compute_shared_has_subklass() {
148 GUARDED_VM_ENTRY(
149 InstanceKlass* ik = get_instanceKlass();
150 _has_subklass = ik->subklass() != NULL ? subklass_true : subklass_false;
151 return _has_subklass == subklass_true;
152 )
153 }
154
155 // ------------------------------------------------------------------
156 // ciInstanceKlass::loader
157 oop ciInstanceKlass::loader() {
158 ASSERT_IN_VM;
159 return JNIHandles::resolve(_loader);
160 }
161
162 // ------------------------------------------------------------------
163 // ciInstanceKlass::loader_handle
164 jobject ciInstanceKlass::loader_handle() {
165 return _loader;
166 }
167
168 // ------------------------------------------------------------------
169 // ciInstanceKlass::protection_domain
170 oop ciInstanceKlass::protection_domain() {
171 ASSERT_IN_VM;
172 return JNIHandles::resolve(_protection_domain);
173 }
174
175 // ------------------------------------------------------------------
176 // ciInstanceKlass::protection_domain_handle
177 jobject ciInstanceKlass::protection_domain_handle() {
178 return _protection_domain;
179 }
180
181 // ------------------------------------------------------------------
182 // ciInstanceKlass::field_cache
183 //
184 // Get the field cache associated with this klass.
185 ciConstantPoolCache* ciInstanceKlass::field_cache() {
186 if (is_shared()) {
187 return NULL;
188 }
189 if (_field_cache == NULL) {
190 assert(!is_java_lang_Object(), "Object has no fields");
191 Arena* arena = CURRENT_ENV->arena();
192 _field_cache = new (arena) ciConstantPoolCache(arena, 5);
193 }
194 return _field_cache;
195 }
196
197 // ------------------------------------------------------------------
198 // ciInstanceKlass::get_canonical_holder
199 //
200 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
201 #ifdef ASSERT
202 if (!(offset >= 0 && offset < layout_helper())) {
203 tty->print("*** get_canonical_holder(%d) on ", offset);
204 this->print();
205 tty->print_cr(" ***");
206 };
207 assert(offset >= 0 && offset < layout_helper(), "offset must be tame");
208 #endif
209
210 if (offset < instanceOopDesc::base_offset_in_bytes()) {
211 // All header offsets belong properly to java/lang/Object.
212 return CURRENT_ENV->Object_klass();
213 }
214
215 ciInstanceKlass* self = this;
216 assert(self->is_loaded(), "must be loaded to access field info");
217 ciField* field = self->get_field_by_offset(offset, false);
218 if (field != NULL) {
219 return field->holder();
220 } else {
221 for (;;) {
222 assert(self->is_loaded(), "must be loaded to have size");
223 ciInstanceKlass* super = self->super();
224 if (super == NULL || super->nof_nonstatic_fields() == 0) {
225 return self;
226 } else {
227 self = super; // return super->get_canonical_holder(offset)
228 }
229 }
230 }
231 }
232
233 // ------------------------------------------------------------------
234 // ciInstanceKlass::is_java_lang_Object
235 //
236 // Is this klass java.lang.Object?
237 bool ciInstanceKlass::is_java_lang_Object() const {
238 return equals(CURRENT_ENV->Object_klass());
239 }
240
241 // ------------------------------------------------------------------
242 // ciInstanceKlass::uses_default_loader
243 bool ciInstanceKlass::uses_default_loader() const {
244 // Note: We do not need to resolve the handle or enter the VM
245 // in order to test null-ness.
246 return _loader == NULL;
247 }
248
249 // ------------------------------------------------------------------
250
251 /**
252 * Return basic type of boxed value for box klass or T_OBJECT if not.
253 */
254 BasicType ciInstanceKlass::box_klass_type() const {
255 if (uses_default_loader() && is_loaded()) {
256 return SystemDictionary::box_klass_type(get_Klass());
257 } else {
258 return T_OBJECT;
259 }
260 }
261
262 /**
263 * Is this boxing klass?
264 */
265 bool ciInstanceKlass::is_box_klass() const {
266 return is_java_primitive(box_klass_type());
267 }
268
269 /**
270 * Is this boxed value offset?
271 */
272 bool ciInstanceKlass::is_boxed_value_offset(int offset) const {
273 BasicType bt = box_klass_type();
274 return is_java_primitive(bt) &&
275 (offset == java_lang_boxing_object::value_offset_in_bytes(bt));
276 }
277
278 // ------------------------------------------------------------------
279 // ciInstanceKlass::is_in_package
280 //
281 // Is this klass in the given package?
282 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
283 // To avoid class loader mischief, this test always rejects application classes.
284 if (!uses_default_loader())
285 return false;
286 GUARDED_VM_ENTRY(
287 return is_in_package_impl(packagename, len);
288 )
289 }
290
291 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
292 ASSERT_IN_VM;
293
294 // If packagename contains trailing '/' exclude it from the
295 // prefix-test since we test for it explicitly.
296 if (packagename[len - 1] == '/')
297 len--;
298
299 if (!name()->starts_with(packagename, len))
300 return false;
301
302 // Test if the class name is something like "java/lang".
303 if ((len + 1) > name()->utf8_length())
304 return false;
305
306 // Test for trailing '/'
307 if (name()->char_at(len) != '/')
308 return false;
309
310 // Make sure it's not actually in a subpackage:
311 if (name()->index_of_at(len+1, "/", 1) >= 0)
312 return false;
313
314 return true;
315 }
316
317 // ------------------------------------------------------------------
318 // ciInstanceKlass::print_impl
319 //
320 // Implementation of the print method.
321 void ciInstanceKlass::print_impl(outputStream* st) {
322 ciKlass::print_impl(st);
323 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i(loader()));)
324 if (is_loaded()) {
325 st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=",
326 bool_to_str(is_initialized()),
327 bool_to_str(has_finalizer()),
328 bool_to_str(has_subklass()),
329 layout_helper());
330
331 _flags.print_klass_flags();
332
333 if (_super) {
334 st->print(" super=");
335 _super->print_name();
336 }
337 if (_java_mirror) {
338 st->print(" mirror=PRESENT");
339 }
340 } else {
341 st->print(" loaded=false");
342 }
343 }
344
345 // ------------------------------------------------------------------
346 // ciInstanceKlass::super
347 //
348 // Get the superklass of this klass.
349 ciInstanceKlass* ciInstanceKlass::super() {
350 assert(is_loaded(), "must be loaded");
351 if (_super == NULL && !is_java_lang_Object()) {
352 GUARDED_VM_ENTRY(
353 Klass* super_klass = get_instanceKlass()->super();
354 _super = CURRENT_ENV->get_instance_klass(super_klass);
355 )
356 }
357 return _super;
358 }
359
360 // ------------------------------------------------------------------
361 // ciInstanceKlass::java_mirror
362 //
363 // Get the instance of java.lang.Class corresponding to this klass.
364 // Cache it on this->_java_mirror.
365 ciInstance* ciInstanceKlass::java_mirror() {
366 if (is_shared()) {
367 return ciKlass::java_mirror();
368 }
369 if (_java_mirror == NULL) {
370 _java_mirror = ciKlass::java_mirror();
371 }
372 return _java_mirror;
373 }
374
375 // ------------------------------------------------------------------
376 // ciInstanceKlass::unique_concrete_subklass
377 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
378 if (!is_loaded()) return NULL; // No change if class is not loaded
379 if (!is_abstract()) return NULL; // Only applies to abstract classes.
380 if (!has_subklass()) return NULL; // Must have at least one subklass.
381 VM_ENTRY_MARK;
382 InstanceKlass* ik = get_instanceKlass();
383 Klass* up = ik->up_cast_abstract();
384 assert(up->is_instance_klass(), "must be InstanceKlass");
385 if (ik == up) {
386 return NULL;
387 }
388 return CURRENT_THREAD_ENV->get_instance_klass(up);
389 }
390
391 // ------------------------------------------------------------------
392 // ciInstanceKlass::has_finalizable_subclass
393 bool ciInstanceKlass::has_finalizable_subclass() {
394 if (!is_loaded()) return true;
395 VM_ENTRY_MARK;
396 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL;
397 }
398
399 // ------------------------------------------------------------------
400 // ciInstanceKlass::contains_field_offset
401 bool ciInstanceKlass::contains_field_offset(int offset) {
402 VM_ENTRY_MARK;
403 return get_instanceKlass()->contains_field_offset(offset);
404 }
405
406 // ------------------------------------------------------------------
407 // ciInstanceKlass::get_field_by_offset
408 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
409 if (!is_static) {
410 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) {
411 ciField* field = _nonstatic_fields->at(i);
412 int field_off = field->offset_in_bytes();
413 if (field_off == field_offset)
414 return field;
415 if (field_off > field_offset)
416 break;
417 // could do binary search or check bins, but probably not worth it
418 }
419 return NULL;
420 }
421 VM_ENTRY_MARK;
422 InstanceKlass* k = get_instanceKlass();
423 fieldDescriptor fd;
424 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
425 return NULL;
426 }
427 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
428 return field;
429 }
430
431 // ------------------------------------------------------------------
432 // ciInstanceKlass::get_field_by_name
433 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
434 VM_ENTRY_MARK;
435 InstanceKlass* k = get_instanceKlass();
436 fieldDescriptor fd;
437 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
438 if (def == NULL) {
439 return NULL;
440 }
441 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
442 return field;
443 }
444
445
446 static int sort_field_by_offset(ciField** a, ciField** b) {
447 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
448 // (no worries about 32-bit overflow...)
449 }
450
451 // ------------------------------------------------------------------
452 // ciInstanceKlass::compute_nonstatic_fields
453 int ciInstanceKlass::compute_nonstatic_fields() {
454 assert(is_loaded(), "must be loaded");
455
456 if (_nonstatic_fields != NULL)
457 return _nonstatic_fields->length();
458
459 if (!has_nonstatic_fields()) {
460 Arena* arena = CURRENT_ENV->arena();
461 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL);
462 return 0;
463 }
464 assert(!is_java_lang_Object(), "bootstrap OK");
465
466 // Size in bytes of my fields, including inherited fields.
467 int fsize = nonstatic_field_size() * heapOopSize;
468
469 ciInstanceKlass* super = this->super();
470 GrowableArray<ciField*>* super_fields = NULL;
471 if (super != NULL && super->has_nonstatic_fields()) {
472 int super_flen = super->nof_nonstatic_fields();
473 super_fields = super->_nonstatic_fields;
474 assert(super_flen == 0 || super_fields != NULL, "first get nof_fields");
475 }
476
477 GrowableArray<ciField*>* fields = NULL;
478 GUARDED_VM_ENTRY({
479 fields = compute_nonstatic_fields_impl(super_fields);
480 });
481
482 if (fields == NULL) {
483 // This can happen if this class (java.lang.Class) has invisible fields.
484 if (super_fields != NULL) {
485 _nonstatic_fields = super_fields;
486 return super_fields->length();
487 } else {
488 return 0;
489 }
490 }
491
492 int flen = fields->length();
493
494 // Now sort them by offset, ascending.
495 // (In principle, they could mix with superclass fields.)
496 fields->sort(sort_field_by_offset);
497 _nonstatic_fields = fields;
498 return flen;
499 }
500
501 GrowableArray<ciField*>*
502 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
503 super_fields) {
504 ASSERT_IN_VM;
505 Arena* arena = CURRENT_ENV->arena();
506 int flen = 0;
507 GrowableArray<ciField*>* fields = NULL;
508 InstanceKlass* k = get_instanceKlass();
509 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
510 if (fs.access_flags().is_static()) continue;
511 flen += 1;
512 }
513
514 // allocate the array:
515 if (flen == 0) {
516 return NULL; // return nothing if none are locally declared
517 }
518 if (super_fields != NULL) {
519 flen += super_fields->length();
520 }
521 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL);
522 if (super_fields != NULL) {
523 fields->appendAll(super_fields);
524 }
525
526 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
527 if (fs.access_flags().is_static()) continue;
528 fieldDescriptor& fd = fs.field_descriptor();
529 ciField* field = new (arena) ciField(&fd);
530 fields->append(field);
531 }
532 assert(fields->length() == flen, "sanity");
533 return fields;
534 }
535
536 bool ciInstanceKlass::compute_injected_fields_helper() {
537 ASSERT_IN_VM;
538 InstanceKlass* k = get_instanceKlass();
539
540 for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
541 if (fs.access_flags().is_static()) continue;
542 return true;
543 }
544 return false;
545 }
546
547 void ciInstanceKlass::compute_injected_fields() {
548 assert(is_loaded(), "must be loaded");
549
550 int has_injected_fields = 0;
551 if (super() != NULL && super()->has_injected_fields()) {
552 has_injected_fields = 1;
553 } else {
554 GUARDED_VM_ENTRY({
555 has_injected_fields = compute_injected_fields_helper() ? 1 : 0;
556 });
557 }
558 // may be concurrently initialized for shared ciInstanceKlass objects
559 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization");
560 _has_injected_fields = has_injected_fields;
561 }
562
563 bool ciInstanceKlass::has_object_fields() const {
564 GUARDED_VM_ENTRY(
565 return get_instanceKlass()->nonstatic_oop_map_size() > 0;
566 );
567 }
568
569 // ------------------------------------------------------------------
570 // ciInstanceKlass::find_method
571 //
572 // Find a method in this klass.
573 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
574 VM_ENTRY_MARK;
575 InstanceKlass* k = get_instanceKlass();
576 Symbol* name_sym = name->get_symbol();
577 Symbol* sig_sym= signature->get_symbol();
578
579 Method* m = k->find_method(name_sym, sig_sym);
580 if (m == NULL) return NULL;
581
582 return CURRENT_THREAD_ENV->get_method(m);
583 }
584
585 // ------------------------------------------------------------------
586 // ciInstanceKlass::is_leaf_type
587 bool ciInstanceKlass::is_leaf_type() {
588 assert(is_loaded(), "must be loaded");
589 if (is_shared()) {
590 return is_final(); // approximately correct
591 } else {
592 return !has_subklass() && (nof_implementors() == 0);
593 }
594 }
595
596 // ------------------------------------------------------------------
597 // ciInstanceKlass::implementor
598 //
599 // Report an implementor of this interface.
600 // Note that there are various races here, since my copy
601 // of _nof_implementors might be out of date with respect
602 // to results returned by InstanceKlass::implementor.
603 // This is OK, since any dependencies we decide to assert
604 // will be checked later under the Compile_lock.
605 ciInstanceKlass* ciInstanceKlass::implementor() {
606 ciInstanceKlass* impl = _implementor;
607 if (impl == NULL) {
608 // Go into the VM to fetch the implementor.
609 {
610 VM_ENTRY_MARK;
611 MutexLocker ml(Compile_lock);
612 Klass* k = get_instanceKlass()->implementor();
613 if (k != NULL) {
614 if (k == get_instanceKlass()) {
615 // More than one implementors. Use 'this' in this case.
616 impl = this;
617 } else {
618 impl = CURRENT_THREAD_ENV->get_instance_klass(k);
619 }
620 }
621 }
622 // Memoize this result.
623 if (!is_shared()) {
624 _implementor = impl;
625 }
626 }
627 return impl;
628 }
629
630 ciInstanceKlass* ciInstanceKlass::unsafe_anonymous_host() {
631 assert(is_loaded(), "must be loaded");
632 if (is_unsafe_anonymous()) {
633 VM_ENTRY_MARK
634 Klass* unsafe_anonymous_host = get_instanceKlass()->unsafe_anonymous_host();
635 return CURRENT_ENV->get_instance_klass(unsafe_anonymous_host);
636 }
637 return NULL;
638 }
639
640 // Utility class for printing of the contents of the static fields for
641 // use by compilation replay. It only prints out the information that
642 // could be consumed by the compiler, so for primitive types it prints
643 // out the actual value. For Strings it's the actual string value.
644 // For array types it it's first level array size since that's the
645 // only value which statically unchangeable. For all other reference
646 // types it simply prints out the dynamic type.
647
648 class StaticFinalFieldPrinter : public FieldClosure {
649 outputStream* _out;
650 const char* _holder;
651 public:
652 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
653 _out(out),
654 _holder(holder) {
655 }
656 void do_field(fieldDescriptor* fd) {
657 if (fd->is_final() && !fd->has_initial_value()) {
658 ResourceMark rm;
659 oop mirror = fd->field_holder()->java_mirror();
660 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
661 switch (fd->field_type()) {
662 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break;
663 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break;
664 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break;
665 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break;
666 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break;
667 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
668 case T_FLOAT: {
669 float f = mirror->float_field(fd->offset());
670 _out->print_cr("%d", *(int*)&f);
671 break;
672 }
673 case T_DOUBLE: {
674 double d = mirror->double_field(fd->offset());
675 _out->print_cr(INT64_FORMAT, *(int64_t*)&d);
676 break;
677 }
678 case T_ARRAY: // fall-through
679 case T_OBJECT: {
680 oop value = mirror->obj_field_acquire(fd->offset());
681 if (value == NULL) {
682 _out->print_cr("null");
683 } else if (value->is_instance()) {
684 assert(fd->field_type() == T_OBJECT, "");
685 if (value->is_a(SystemDictionary::String_klass())) {
686 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
687 _out->print("\"%s\"", (ascii_value != NULL) ? ascii_value : "");
688 } else {
689 const char* klass_name = value->klass()->name()->as_quoted_ascii();
690 _out->print_cr("%s", klass_name);
691 }
692 } else if (value->is_array()) {
693 typeArrayOop ta = (typeArrayOop)value;
694 _out->print("%d", ta->length());
695 if (value->is_objArray()) {
696 objArrayOop oa = (objArrayOop)value;
697 const char* klass_name = value->klass()->name()->as_quoted_ascii();
698 _out->print(" %s", klass_name);
699 }
700 _out->cr();
701 } else {
702 ShouldNotReachHere();
703 }
704 break;
705 }
706 default:
707 ShouldNotReachHere();
708 }
709 }
710 }
711 };
712
713
714 void ciInstanceKlass::dump_replay_data(outputStream* out) {
715 ResourceMark rm;
716
717 InstanceKlass* ik = get_instanceKlass();
718 ConstantPool* cp = ik->constants();
719
720 // Try to record related loaded classes
721 Klass* sub = ik->subklass();
722 while (sub != NULL) {
723 if (sub->is_instance_klass()) {
724 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii());
725 }
726 sub = sub->next_sibling();
727 }
728
729 // Dump out the state of the constant pool tags. During replay the
730 // tags will be validated for things which shouldn't change and
731 // classes will be resolved if the tags indicate that they were
732 // resolved at compile time.
733 out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(),
734 is_linked(), is_initialized(), cp->length());
735 for (int index = 1; index < cp->length(); index++) {
736 out->print(" %d", cp->tags()->at(index));
737 }
738 out->cr();
739 if (is_initialized()) {
740 // Dump out the static final fields in case the compilation relies
741 // on their value for correct replay.
742 StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii());
743 ik->do_local_static_fields(&sffp);
744 }
745 }
746
747 #ifdef ASSERT
748 bool ciInstanceKlass::debug_final_field_at(int offset) {
749 GUARDED_VM_ENTRY(
750 InstanceKlass* ik = get_instanceKlass();
751 fieldDescriptor fd;
752 if (ik->find_field_from_offset(offset, false, &fd)) {
753 return fd.is_final();
754 }
755 );
756 return false;
757 }
758
759 bool ciInstanceKlass::debug_stable_field_at(int offset) {
760 GUARDED_VM_ENTRY(
761 InstanceKlass* ik = get_instanceKlass();
762 fieldDescriptor fd;
763 if (ik->find_field_from_offset(offset, false, &fd)) {
764 return fd.is_stable();
765 }
766 );
767 return false;
768 }
769 #endif