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 _is_hidden = ik->is_hidden();
67 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields:
68 _has_injected_fields = -1;
69 _implementor = NULL; // we will fill these lazily
70
71 // Ensure that the metadata wrapped by the ciMetadata is kept alive by GC.
72 // This is primarily useful for metadata which is considered as weak roots
73 // by the GC but need to be strong roots if reachable from a current compilation.
74 // InstanceKlass are created for both weak and strong metadata. Ensuring this metadata
75 // alive covers the cases where there are weak roots without performance cost.
76 oop holder = ik->klass_holder();
77 if (ik->class_loader_data()->has_class_mirror_holder()) {
78 // Though ciInstanceKlass records class loader oop, it's not enough to keep
79 // non-strong hidden classes and VM unsafe anonymous classes alive (loader == NULL). Klass holder should
80 // be used instead. It is enough to record a ciObject, since cached elements are never removed
81 // during ciObjectFactory lifetime. ciObjectFactory itself is created for
82 // every compilation and lives for the whole duration of the compilation.
83 assert(holder != NULL, "holder of hidden or unsafe anonymous class is the mirror which is never null");
84 (void)CURRENT_ENV->get_object(holder);
85 }
86
87 Thread *thread = Thread::current();
88 if (ciObjectFactory::is_initialized()) {
89 _loader = JNIHandles::make_local(thread, ik->class_loader());
90 _protection_domain = JNIHandles::make_local(thread,
91 ik->protection_domain());
92 _is_shared = false;
93 } else {
94 Handle h_loader(thread, ik->class_loader());
95 Handle h_protection_domain(thread, ik->protection_domain());
96 _loader = JNIHandles::make_global(h_loader);
97 _protection_domain = JNIHandles::make_global(h_protection_domain);
98 _is_shared = true;
99 }
100
101 // Lazy fields get filled in only upon request.
102 _super = NULL;
103 _java_mirror = NULL;
104
105 if (is_shared()) {
106 if (k != SystemDictionary::Object_klass()) {
107 super();
108 }
109 //compute_nonstatic_fields(); // done outside of constructor
110 }
111
112 _field_cache = NULL;
113 }
114
115 // Version for unloaded classes:
116 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
117 jobject loader, jobject protection_domain)
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 _nonstatic_field_size = -1;
123 _has_nonstatic_fields = false;
124 _nonstatic_fields = NULL;
125 _has_injected_fields = -1;
126 _is_unsafe_anonymous = false;
127 _is_hidden = false;
128 _loader = loader;
129 _protection_domain = protection_domain;
130 _is_shared = false;
131 _super = NULL;
132 _java_mirror = NULL;
133 _field_cache = NULL;
134 }
135
136
137
138 // ------------------------------------------------------------------
139 // ciInstanceKlass::compute_shared_is_initialized
140 void ciInstanceKlass::compute_shared_init_state() {
141 GUARDED_VM_ENTRY(
142 InstanceKlass* ik = get_instanceKlass();
143 _init_state = ik->init_state();
144 )
145 }
146
147 // ------------------------------------------------------------------
148 // ciInstanceKlass::compute_shared_has_subklass
149 bool ciInstanceKlass::compute_shared_has_subklass() {
150 GUARDED_VM_ENTRY(
151 InstanceKlass* ik = get_instanceKlass();
152 _has_subklass = ik->subklass() != NULL ? subklass_true : subklass_false;
153 return _has_subklass == subklass_true;
154 )
155 }
156
157 // ------------------------------------------------------------------
158 // ciInstanceKlass::loader
159 oop ciInstanceKlass::loader() {
160 ASSERT_IN_VM;
161 return JNIHandles::resolve(_loader);
162 }
163
164 // ------------------------------------------------------------------
165 // ciInstanceKlass::loader_handle
166 jobject ciInstanceKlass::loader_handle() {
167 return _loader;
168 }
169
170 // ------------------------------------------------------------------
171 // ciInstanceKlass::protection_domain
172 oop ciInstanceKlass::protection_domain() {
173 ASSERT_IN_VM;
174 return JNIHandles::resolve(_protection_domain);
175 }
176
177 // ------------------------------------------------------------------
178 // ciInstanceKlass::protection_domain_handle
179 jobject ciInstanceKlass::protection_domain_handle() {
180 return _protection_domain;
181 }
182
183 // ------------------------------------------------------------------
184 // ciInstanceKlass::field_cache
185 //
186 // Get the field cache associated with this klass.
187 ciConstantPoolCache* ciInstanceKlass::field_cache() {
188 if (is_shared()) {
189 return NULL;
190 }
191 if (_field_cache == NULL) {
192 assert(!is_java_lang_Object(), "Object has no fields");
193 Arena* arena = CURRENT_ENV->arena();
194 _field_cache = new (arena) ciConstantPoolCache(arena, 5);
195 }
196 return _field_cache;
197 }
198
199 // ------------------------------------------------------------------
200 // ciInstanceKlass::get_canonical_holder
201 //
202 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
203 #ifdef ASSERT
204 if (!(offset >= 0 && offset < layout_helper())) {
205 tty->print("*** get_canonical_holder(%d) on ", offset);
206 this->print();
207 tty->print_cr(" ***");
208 };
209 assert(offset >= 0 && offset < layout_helper(), "offset must be tame");
210 #endif
211
212 if (offset < instanceOopDesc::base_offset_in_bytes()) {
213 // All header offsets belong properly to java/lang/Object.
214 return CURRENT_ENV->Object_klass();
215 }
216
217 ciInstanceKlass* self = this;
218 assert(self->is_loaded(), "must be loaded to access field info");
219 ciField* field = self->get_field_by_offset(offset, false);
220 if (field != NULL) {
221 return field->holder();
222 } else {
223 for (;;) {
224 assert(self->is_loaded(), "must be loaded to have size");
225 ciInstanceKlass* super = self->super();
226 if (super == NULL || super->nof_nonstatic_fields() == 0) {
227 return self;
228 } else {
229 self = super; // return super->get_canonical_holder(offset)
230 }
231 }
232 }
233 }
234
235 // ------------------------------------------------------------------
236 // ciInstanceKlass::is_java_lang_Object
237 //
238 // Is this klass java.lang.Object?
239 bool ciInstanceKlass::is_java_lang_Object() const {
240 return equals(CURRENT_ENV->Object_klass());
241 }
242
243 // ------------------------------------------------------------------
244 // ciInstanceKlass::uses_default_loader
245 bool ciInstanceKlass::uses_default_loader() const {
246 // Note: We do not need to resolve the handle or enter the VM
247 // in order to test null-ness.
248 return _loader == NULL;
249 }
250
251 // ------------------------------------------------------------------
252
253 /**
254 * Return basic type of boxed value for box klass or T_OBJECT if not.
255 */
256 BasicType ciInstanceKlass::box_klass_type() const {
257 if (uses_default_loader() && is_loaded()) {
258 return SystemDictionary::box_klass_type(get_Klass());
259 } else {
260 return T_OBJECT;
261 }
262 }
263
264 /**
265 * Is this boxing klass?
266 */
267 bool ciInstanceKlass::is_box_klass() const {
268 return is_java_primitive(box_klass_type());
269 }
270
271 /**
272 * Is this boxed value offset?
273 */
274 bool ciInstanceKlass::is_boxed_value_offset(int offset) const {
275 BasicType bt = box_klass_type();
276 return is_java_primitive(bt) &&
277 (offset == java_lang_boxing_object::value_offset_in_bytes(bt));
278 }
279
280 // ------------------------------------------------------------------
281 // ciInstanceKlass::is_in_package
282 //
283 // Is this klass in the given package?
284 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
285 // To avoid class loader mischief, this test always rejects application classes.
286 if (!uses_default_loader())
287 return false;
288 GUARDED_VM_ENTRY(
289 return is_in_package_impl(packagename, len);
290 )
291 }
292
293 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
294 ASSERT_IN_VM;
295
296 // If packagename contains trailing '/' exclude it from the
297 // prefix-test since we test for it explicitly.
298 if (packagename[len - 1] == '/')
299 len--;
300
301 if (!name()->starts_with(packagename, len))
302 return false;
303
304 // Test if the class name is something like "java/lang".
305 if ((len + 1) > name()->utf8_length())
306 return false;
307
308 // Test for trailing '/'
309 if (name()->char_at(len) != '/')
310 return false;
311
312 // Make sure it's not actually in a subpackage:
313 if (name()->index_of_at(len+1, "/", 1) >= 0)
314 return false;
315
316 return true;
317 }
318
319 // ------------------------------------------------------------------
320 // ciInstanceKlass::print_impl
321 //
322 // Implementation of the print method.
323 void ciInstanceKlass::print_impl(outputStream* st) {
324 ciKlass::print_impl(st);
325 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i(loader()));)
326 if (is_loaded()) {
327 st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=",
328 bool_to_str(is_initialized()),
329 bool_to_str(has_finalizer()),
330 bool_to_str(has_subklass()),
331 layout_helper());
332
333 _flags.print_klass_flags();
334
335 if (_super) {
336 st->print(" super=");
337 _super->print_name();
338 }
339 if (_java_mirror) {
340 st->print(" mirror=PRESENT");
341 }
342 } else {
343 st->print(" loaded=false");
344 }
345 }
346
347 // ------------------------------------------------------------------
348 // ciInstanceKlass::super
349 //
350 // Get the superklass of this klass.
351 ciInstanceKlass* ciInstanceKlass::super() {
352 assert(is_loaded(), "must be loaded");
353 if (_super == NULL && !is_java_lang_Object()) {
354 GUARDED_VM_ENTRY(
355 Klass* super_klass = get_instanceKlass()->super();
356 _super = CURRENT_ENV->get_instance_klass(super_klass);
357 )
358 }
359 return _super;
360 }
361
362 // ------------------------------------------------------------------
363 // ciInstanceKlass::java_mirror
364 //
365 // Get the instance of java.lang.Class corresponding to this klass.
366 // Cache it on this->_java_mirror.
367 ciInstance* ciInstanceKlass::java_mirror() {
368 if (is_shared()) {
369 return ciKlass::java_mirror();
370 }
371 if (_java_mirror == NULL) {
372 _java_mirror = ciKlass::java_mirror();
373 }
374 return _java_mirror;
375 }
376
377 // ------------------------------------------------------------------
378 // ciInstanceKlass::unique_concrete_subklass
379 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
380 if (!is_loaded()) return NULL; // No change if class is not loaded
381 if (!is_abstract()) return NULL; // Only applies to abstract classes.
382 if (!has_subklass()) return NULL; // Must have at least one subklass.
383 VM_ENTRY_MARK;
384 InstanceKlass* ik = get_instanceKlass();
385 Klass* up = ik->up_cast_abstract();
386 assert(up->is_instance_klass(), "must be InstanceKlass");
387 if (ik == up) {
388 return NULL;
389 }
390 return CURRENT_THREAD_ENV->get_instance_klass(up);
391 }
392
393 // ------------------------------------------------------------------
394 // ciInstanceKlass::has_finalizable_subclass
395 bool ciInstanceKlass::has_finalizable_subclass() {
396 if (!is_loaded()) return true;
397 VM_ENTRY_MARK;
398 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL;
399 }
400
401 // ------------------------------------------------------------------
402 // ciInstanceKlass::contains_field_offset
403 bool ciInstanceKlass::contains_field_offset(int offset) {
404 VM_ENTRY_MARK;
405 return get_instanceKlass()->contains_field_offset(offset);
406 }
407
408 // ------------------------------------------------------------------
409 // ciInstanceKlass::get_field_by_offset
410 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
411 if (!is_static) {
412 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) {
413 ciField* field = _nonstatic_fields->at(i);
414 int field_off = field->offset_in_bytes();
415 if (field_off == field_offset)
416 return field;
417 if (field_off > field_offset)
418 break;
419 // could do binary search or check bins, but probably not worth it
420 }
421 return NULL;
422 }
423 VM_ENTRY_MARK;
424 InstanceKlass* k = get_instanceKlass();
425 fieldDescriptor fd;
426 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
427 return NULL;
428 }
429 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
430 return field;
431 }
432
433 // ------------------------------------------------------------------
434 // ciInstanceKlass::get_field_by_name
435 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
436 VM_ENTRY_MARK;
437 InstanceKlass* k = get_instanceKlass();
438 fieldDescriptor fd;
439 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
440 if (def == NULL) {
441 return NULL;
442 }
443 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
444 return field;
445 }
446
447
448 static int sort_field_by_offset(ciField** a, ciField** b) {
449 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
450 // (no worries about 32-bit overflow...)
451 }
452
453 // ------------------------------------------------------------------
454 // ciInstanceKlass::compute_nonstatic_fields
455 int ciInstanceKlass::compute_nonstatic_fields() {
456 assert(is_loaded(), "must be loaded");
457
458 if (_nonstatic_fields != NULL)
459 return _nonstatic_fields->length();
460
461 if (!has_nonstatic_fields()) {
462 Arena* arena = CURRENT_ENV->arena();
463 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL);
464 return 0;
465 }
466 assert(!is_java_lang_Object(), "bootstrap OK");
467
468 // Size in bytes of my fields, including inherited fields.
469 int fsize = nonstatic_field_size() * heapOopSize;
470
471 ciInstanceKlass* super = this->super();
472 GrowableArray<ciField*>* super_fields = NULL;
473 if (super != NULL && super->has_nonstatic_fields()) {
474 int super_flen = super->nof_nonstatic_fields();
475 super_fields = super->_nonstatic_fields;
476 assert(super_flen == 0 || super_fields != NULL, "first get nof_fields");
477 }
478
479 GrowableArray<ciField*>* fields = NULL;
480 GUARDED_VM_ENTRY({
481 fields = compute_nonstatic_fields_impl(super_fields);
482 });
483
484 if (fields == NULL) {
485 // This can happen if this class (java.lang.Class) has invisible fields.
486 if (super_fields != NULL) {
487 _nonstatic_fields = super_fields;
488 return super_fields->length();
489 } else {
490 return 0;
491 }
492 }
493
494 int flen = fields->length();
495
496 // Now sort them by offset, ascending.
497 // (In principle, they could mix with superclass fields.)
498 fields->sort(sort_field_by_offset);
499 _nonstatic_fields = fields;
500 return flen;
501 }
502
503 GrowableArray<ciField*>*
504 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
505 super_fields) {
506 ASSERT_IN_VM;
507 Arena* arena = CURRENT_ENV->arena();
508 int flen = 0;
509 GrowableArray<ciField*>* fields = NULL;
510 InstanceKlass* k = get_instanceKlass();
511 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
512 if (fs.access_flags().is_static()) continue;
513 flen += 1;
514 }
515
516 // allocate the array:
517 if (flen == 0) {
518 return NULL; // return nothing if none are locally declared
519 }
520 if (super_fields != NULL) {
521 flen += super_fields->length();
522 }
523 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL);
524 if (super_fields != NULL) {
525 fields->appendAll(super_fields);
526 }
527
528 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
529 if (fs.access_flags().is_static()) continue;
530 fieldDescriptor& fd = fs.field_descriptor();
531 ciField* field = new (arena) ciField(&fd);
532 fields->append(field);
533 }
534 assert(fields->length() == flen, "sanity");
535 return fields;
536 }
537
538 bool ciInstanceKlass::compute_injected_fields_helper() {
539 ASSERT_IN_VM;
540 InstanceKlass* k = get_instanceKlass();
541
542 for (InternalFieldStream fs(k); !fs.done(); fs.next()) {
543 if (fs.access_flags().is_static()) continue;
544 return true;
545 }
546 return false;
547 }
548
549 void ciInstanceKlass::compute_injected_fields() {
550 assert(is_loaded(), "must be loaded");
551
552 int has_injected_fields = 0;
553 if (super() != NULL && super()->has_injected_fields()) {
554 has_injected_fields = 1;
555 } else {
556 GUARDED_VM_ENTRY({
557 has_injected_fields = compute_injected_fields_helper() ? 1 : 0;
558 });
559 }
560 // may be concurrently initialized for shared ciInstanceKlass objects
561 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization");
562 _has_injected_fields = has_injected_fields;
563 }
564
565 bool ciInstanceKlass::has_object_fields() const {
566 GUARDED_VM_ENTRY(
567 return get_instanceKlass()->nonstatic_oop_map_size() > 0;
568 );
569 }
570
571 // ------------------------------------------------------------------
572 // ciInstanceKlass::find_method
573 //
574 // Find a method in this klass.
575 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
576 VM_ENTRY_MARK;
577 InstanceKlass* k = get_instanceKlass();
578 Symbol* name_sym = name->get_symbol();
579 Symbol* sig_sym= signature->get_symbol();
580
581 Method* m = k->find_method(name_sym, sig_sym);
582 if (m == NULL) return NULL;
583
584 return CURRENT_THREAD_ENV->get_method(m);
585 }
586
587 // ------------------------------------------------------------------
588 // ciInstanceKlass::is_leaf_type
589 bool ciInstanceKlass::is_leaf_type() {
590 assert(is_loaded(), "must be loaded");
591 if (is_shared()) {
592 return is_final(); // approximately correct
593 } else {
594 return !has_subklass() && (nof_implementors() == 0);
595 }
596 }
597
598 // ------------------------------------------------------------------
599 // ciInstanceKlass::implementor
600 //
601 // Report an implementor of this interface.
602 // Note that there are various races here, since my copy
603 // of _nof_implementors might be out of date with respect
604 // to results returned by InstanceKlass::implementor.
605 // This is OK, since any dependencies we decide to assert
606 // will be checked later under the Compile_lock.
607 ciInstanceKlass* ciInstanceKlass::implementor() {
608 ciInstanceKlass* impl = _implementor;
609 if (impl == NULL) {
610 // Go into the VM to fetch the implementor.
611 {
612 VM_ENTRY_MARK;
613 MutexLocker ml(Compile_lock);
614 Klass* k = get_instanceKlass()->implementor();
615 if (k != NULL) {
616 if (k == get_instanceKlass()) {
617 // More than one implementors. Use 'this' in this case.
618 impl = this;
619 } else {
620 impl = CURRENT_THREAD_ENV->get_instance_klass(k);
621 }
622 }
623 }
624 // Memoize this result.
625 if (!is_shared()) {
626 _implementor = impl;
627 }
628 }
629 return impl;
630 }
631
632 ciInstanceKlass* ciInstanceKlass::unsafe_anonymous_host() {
633 assert(is_loaded(), "must be loaded");
634 if (is_unsafe_anonymous()) {
635 VM_ENTRY_MARK
636 Klass* unsafe_anonymous_host = get_instanceKlass()->unsafe_anonymous_host();
637 return CURRENT_ENV->get_instance_klass(unsafe_anonymous_host);
638 }
639 return NULL;
640 }
641
642 // Utility class for printing of the contents of the static fields for
643 // use by compilation replay. It only prints out the information that
644 // could be consumed by the compiler, so for primitive types it prints
645 // out the actual value. For Strings it's the actual string value.
646 // For array types it it's first level array size since that's the
647 // only value which statically unchangeable. For all other reference
648 // types it simply prints out the dynamic type.
649
650 class StaticFinalFieldPrinter : public FieldClosure {
651 outputStream* _out;
652 const char* _holder;
653 public:
654 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
655 _out(out),
656 _holder(holder) {
657 }
658 void do_field(fieldDescriptor* fd) {
659 if (fd->is_final() && !fd->has_initial_value()) {
660 ResourceMark rm;
661 oop mirror = fd->field_holder()->java_mirror();
662 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
663 switch (fd->field_type()) {
664 case T_BYTE: _out->print_cr("%d", mirror->byte_field(fd->offset())); break;
665 case T_BOOLEAN: _out->print_cr("%d", mirror->bool_field(fd->offset())); break;
666 case T_SHORT: _out->print_cr("%d", mirror->short_field(fd->offset())); break;
667 case T_CHAR: _out->print_cr("%d", mirror->char_field(fd->offset())); break;
668 case T_INT: _out->print_cr("%d", mirror->int_field(fd->offset())); break;
669 case T_LONG: _out->print_cr(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
670 case T_FLOAT: {
671 float f = mirror->float_field(fd->offset());
672 _out->print_cr("%d", *(int*)&f);
673 break;
674 }
675 case T_DOUBLE: {
676 double d = mirror->double_field(fd->offset());
677 _out->print_cr(INT64_FORMAT, *(int64_t*)&d);
678 break;
679 }
680 case T_ARRAY: // fall-through
681 case T_OBJECT: {
682 oop value = mirror->obj_field_acquire(fd->offset());
683 if (value == NULL) {
684 _out->print_cr("null");
685 } else if (value->is_instance()) {
686 assert(fd->field_type() == T_OBJECT, "");
687 if (value->is_a(SystemDictionary::String_klass())) {
688 const char* ascii_value = java_lang_String::as_quoted_ascii(value);
689 _out->print("\"%s\"", (ascii_value != NULL) ? ascii_value : "");
690 } else {
691 const char* klass_name = value->klass()->name()->as_quoted_ascii();
692 _out->print_cr("%s", klass_name);
693 }
694 } else if (value->is_array()) {
695 typeArrayOop ta = (typeArrayOop)value;
696 _out->print("%d", ta->length());
697 if (value->is_objArray()) {
698 objArrayOop oa = (objArrayOop)value;
699 const char* klass_name = value->klass()->name()->as_quoted_ascii();
700 _out->print(" %s", klass_name);
701 }
702 _out->cr();
703 } else {
704 ShouldNotReachHere();
705 }
706 break;
707 }
708 default:
709 ShouldNotReachHere();
710 }
711 }
712 }
713 };
714
715
716 void ciInstanceKlass::dump_replay_data(outputStream* out) {
717 ResourceMark rm;
718
719 InstanceKlass* ik = get_instanceKlass();
720 ConstantPool* cp = ik->constants();
721
722 // Try to record related loaded classes
723 Klass* sub = ik->subklass();
724 while (sub != NULL) {
725 if (sub->is_instance_klass()) {
726 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii());
727 }
728 sub = sub->next_sibling();
729 }
730
731 // Dump out the state of the constant pool tags. During replay the
732 // tags will be validated for things which shouldn't change and
733 // classes will be resolved if the tags indicate that they were
734 // resolved at compile time.
735 out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(),
736 is_linked(), is_initialized(), cp->length());
737 for (int index = 1; index < cp->length(); index++) {
738 out->print(" %d", cp->tags()->at(index));
739 }
740 out->cr();
741 if (is_initialized()) {
742 // Dump out the static final fields in case the compilation relies
743 // on their value for correct replay.
744 StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii());
745 ik->do_local_static_fields(&sffp);
746 }
747 }
748
749 #ifdef ASSERT
750 bool ciInstanceKlass::debug_final_field_at(int offset) {
751 GUARDED_VM_ENTRY(
752 InstanceKlass* ik = get_instanceKlass();
753 fieldDescriptor fd;
754 if (ik->find_field_from_offset(offset, false, &fd)) {
755 return fd.is_final();
756 }
757 );
758 return false;
759 }
760
761 bool ciInstanceKlass::debug_stable_field_at(int offset) {
762 GUARDED_VM_ENTRY(
763 InstanceKlass* ik = get_instanceKlass();
764 fieldDescriptor fd;
765 if (ik->find_field_from_offset(offset, false, &fd)) {
766 return fd.is_stable();
767 }
768 );
769 return false;
770 }
771 #endif