1 /*
2 * Copyright (c) 1999, 2015, 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.hpp"
30 #include "ci/ciValueKlass.hpp"
31 #include "classfile/systemDictionary.hpp"
32 #include "memory/allocation.hpp"
33 #include "memory/allocation.inline.hpp"
34 #include "oops/oop.inline.hpp"
35 #include "oops/fieldStreams.hpp"
36 #include "oops/valueKlass.hpp"
37 #include "runtime/fieldDescriptor.hpp"
38
39 // ciInstanceKlass
40 //
41 // This class represents a Klass* in the HotSpot virtual machine
42 // whose Klass part in an InstanceKlass.
43
44 // ------------------------------------------------------------------
45 // ciInstanceKlass::ciInstanceKlass
46 //
47 // Loaded instance klass.
48 ciInstanceKlass::ciInstanceKlass(KlassHandle h_k) :
49 ciKlass(h_k)
50 {
51 assert(get_Klass()->is_instance_klass(), "wrong type");
52 assert(get_instanceKlass()->is_loaded(), "must be at least loaded");
53 InstanceKlass* ik = get_instanceKlass();
54
55 AccessFlags access_flags = ik->access_flags();
56 _flags = ciFlags(access_flags);
57 _has_finalizer = access_flags.has_finalizer();
58 _has_subklass = ik->subklass() != NULL;
59 _init_state = ik->init_state();
60 _nonstatic_field_size = ik->nonstatic_field_size();
61 _has_nonstatic_fields = ik->has_nonstatic_fields();
62 _has_default_methods = ik->has_default_methods();
63 _is_anonymous = ik->is_anonymous();
64 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields
65 _nof_declared_nonstatic_fields = -1; // initialized lazily by compute_nonstatic_fields
66 _has_injected_fields = -1;
67 _implementor = NULL; // we will fill these lazily
68
69 Thread *thread = Thread::current();
70 if (ciObjectFactory::is_initialized()) {
71 _loader = JNIHandles::make_local(thread, ik->class_loader());
72 _protection_domain = JNIHandles::make_local(thread,
73 ik->protection_domain());
74 _is_shared = false;
75 } else {
76 Handle h_loader(thread, ik->class_loader());
77 Handle h_protection_domain(thread, ik->protection_domain());
78 _loader = JNIHandles::make_global(h_loader);
79 _protection_domain = JNIHandles::make_global(h_protection_domain);
80 _is_shared = true;
81 }
82
83 // Lazy fields get filled in only upon request.
84 _super = NULL;
85 _java_mirror = NULL;
86
87 if (is_shared()) {
88 if (h_k() != SystemDictionary::Object_klass()) {
89 super();
90 }
91 //compute_nonstatic_fields(); // done outside of constructor
92 }
93
94 _field_cache = NULL;
95 }
96
97 // Version for unloaded classes:
98 ciInstanceKlass::ciInstanceKlass(ciSymbol* name,
99 jobject loader, jobject protection_domain)
100 : ciKlass(name, T_OBJECT)
101 {
102 assert(name->byte_at(0) != '[', "not an instance klass");
103 _init_state = (InstanceKlass::ClassState)0;
104 _nonstatic_field_size = -1;
105 _has_nonstatic_fields = false;
106 _nonstatic_fields = NULL; // initialized lazily by compute_nonstatic_fields
107 _nof_declared_nonstatic_fields = -1; // initialized lazily by compute_nonstatic_fields
108 _has_injected_fields = -1;
109 _is_anonymous = false;
110 _loader = loader;
111 _protection_domain = protection_domain;
112 _is_shared = false;
113 _super = NULL;
114 _java_mirror = NULL;
115 _field_cache = NULL;
116 }
117
118
119
120 // ------------------------------------------------------------------
121 // ciInstanceKlass::compute_shared_is_initialized
122 void ciInstanceKlass::compute_shared_init_state() {
123 GUARDED_VM_ENTRY(
124 InstanceKlass* ik = get_instanceKlass();
125 _init_state = ik->init_state();
126 )
127 }
128
129 // ------------------------------------------------------------------
130 // ciInstanceKlass::compute_shared_has_subklass
131 bool ciInstanceKlass::compute_shared_has_subklass() {
132 GUARDED_VM_ENTRY(
133 InstanceKlass* ik = get_instanceKlass();
134 _has_subklass = ik->subklass() != NULL;
135 return _has_subklass;
136 )
137 }
138
139 // ------------------------------------------------------------------
140 // ciInstanceKlass::loader
141 oop ciInstanceKlass::loader() {
142 ASSERT_IN_VM;
143 return JNIHandles::resolve(_loader);
144 }
145
146 // ------------------------------------------------------------------
147 // ciInstanceKlass::loader_handle
148 jobject ciInstanceKlass::loader_handle() {
149 return _loader;
150 }
151
152 // ------------------------------------------------------------------
153 // ciInstanceKlass::protection_domain
154 oop ciInstanceKlass::protection_domain() {
155 ASSERT_IN_VM;
156 return JNIHandles::resolve(_protection_domain);
157 }
158
159 // ------------------------------------------------------------------
160 // ciInstanceKlass::protection_domain_handle
161 jobject ciInstanceKlass::protection_domain_handle() {
162 return _protection_domain;
163 }
164
165 // ------------------------------------------------------------------
166 // ciInstanceKlass::field_cache
167 //
168 // Get the field cache associated with this klass.
169 ciConstantPoolCache* ciInstanceKlass::field_cache() {
170 if (is_shared()) {
171 return NULL;
172 }
173 if (_field_cache == NULL) {
174 assert(!is_java_lang_Object(), "Object has no fields");
175 Arena* arena = CURRENT_ENV->arena();
176 _field_cache = new (arena) ciConstantPoolCache(arena, 5);
177 }
178 return _field_cache;
179 }
180
181 // ------------------------------------------------------------------
182 // ciInstanceKlass::get_canonical_holder
183 //
184 ciInstanceKlass* ciInstanceKlass::get_canonical_holder(int offset) {
185 #ifdef ASSERT
186 if (!(offset >= 0 && offset < layout_helper())) {
187 tty->print("*** get_canonical_holder(%d) on ", offset);
188 this->print();
189 tty->print_cr(" ***");
190 };
191 assert(offset >= 0 && offset < layout_helper(), "offset must be tame");
192 #endif
193
194 if (offset < instanceOopDesc::base_offset_in_bytes()) {
195 // All header offsets belong properly to java/lang/Object.
196 return CURRENT_ENV->Object_klass();
197 }
198
199 ciInstanceKlass* self = this;
200 for (;;) {
201 assert(self->is_loaded(), "must be loaded to have size");
202 ciInstanceKlass* super = self->super();
203 if (super == NULL || super->nof_nonstatic_fields() == 0 ||
204 !super->contains_field_offset(offset)) {
205 return self;
206 } else {
207 self = super; // return super->get_canonical_holder(offset)
208 }
209 }
210 }
211
212 // ------------------------------------------------------------------
213 // ciInstanceKlass::is_java_lang_Object
214 //
215 // Is this klass java.lang.Object?
216 bool ciInstanceKlass::is_java_lang_Object() const {
217 return equals(CURRENT_ENV->Object_klass());
218 }
219
220 // ------------------------------------------------------------------
221 // ciInstanceKlass::uses_default_loader
222 bool ciInstanceKlass::uses_default_loader() const {
223 // Note: We do not need to resolve the handle or enter the VM
224 // in order to test null-ness.
225 return _loader == NULL;
226 }
227
228 // ------------------------------------------------------------------
229
230 /**
231 * Return basic type of boxed value for box klass or T_OBJECT if not.
232 */
233 BasicType ciInstanceKlass::box_klass_type() const {
234 if (uses_default_loader() && is_loaded()) {
235 return SystemDictionary::box_klass_type(get_Klass());
236 } else {
237 return T_OBJECT;
238 }
239 }
240
241 /**
242 * Is this boxing klass?
243 */
244 bool ciInstanceKlass::is_box_klass() const {
245 return is_java_primitive(box_klass_type());
246 }
247
248 /**
249 * Is this boxed value offset?
250 */
251 bool ciInstanceKlass::is_boxed_value_offset(int offset) const {
252 BasicType bt = box_klass_type();
253 return is_java_primitive(bt) &&
254 (offset == java_lang_boxing_object::value_offset_in_bytes(bt));
255 }
256
257 // ------------------------------------------------------------------
258 // ciInstanceKlass::is_in_package
259 //
260 // Is this klass in the given package?
261 bool ciInstanceKlass::is_in_package(const char* packagename, int len) {
262 // To avoid class loader mischief, this test always rejects application classes.
263 if (!uses_default_loader())
264 return false;
265 GUARDED_VM_ENTRY(
266 return is_in_package_impl(packagename, len);
267 )
268 }
269
270 bool ciInstanceKlass::is_in_package_impl(const char* packagename, int len) {
271 ASSERT_IN_VM;
272
273 // If packagename contains trailing '/' exclude it from the
274 // prefix-test since we test for it explicitly.
275 if (packagename[len - 1] == '/')
276 len--;
277
278 if (!name()->starts_with(packagename, len))
279 return false;
280
281 // Test if the class name is something like "java/lang".
282 if ((len + 1) > name()->utf8_length())
283 return false;
284
285 // Test for trailing '/'
286 if ((char) name()->byte_at(len) != '/')
287 return false;
288
289 // Make sure it's not actually in a subpackage:
290 if (name()->index_of_at(len+1, "/", 1) >= 0)
291 return false;
292
293 return true;
294 }
295
296 // ------------------------------------------------------------------
297 // ciInstanceKlass::print_impl
298 //
299 // Implementation of the print method.
300 void ciInstanceKlass::print_impl(outputStream* st) {
301 ciKlass::print_impl(st);
302 GUARDED_VM_ENTRY(st->print(" loader=" INTPTR_FORMAT, p2i((address)loader()));)
303 if (is_loaded()) {
304 st->print(" loaded=true initialized=%s finalized=%s subklass=%s size=%d flags=",
305 bool_to_str(is_initialized()),
306 bool_to_str(has_finalizer()),
307 bool_to_str(has_subklass()),
308 layout_helper());
309
310 _flags.print_klass_flags();
311
312 if (_super) {
313 st->print(" super=");
314 _super->print_name();
315 }
316 if (_java_mirror) {
317 st->print(" mirror=PRESENT");
318 }
319 } else {
320 st->print(" loaded=false");
321 }
322 }
323
324 // ------------------------------------------------------------------
325 // ciInstanceKlass::super
326 //
327 // Get the superklass of this klass.
328 ciInstanceKlass* ciInstanceKlass::super() {
329 assert(is_loaded(), "must be loaded");
330 if (_super == NULL && !is_java_lang_Object()) {
331 GUARDED_VM_ENTRY(
332 Klass* super_klass = get_instanceKlass()->super();
333 _super = CURRENT_ENV->get_instance_klass(super_klass);
334 )
335 }
336 return _super;
337 }
338
339 // ------------------------------------------------------------------
340 // ciInstanceKlass::java_mirror
341 //
342 // Get the instance of java.lang.Class corresponding to this klass.
343 // Cache it on this->_java_mirror.
344 ciInstance* ciInstanceKlass::java_mirror() {
345 if (is_shared()) {
346 return ciKlass::java_mirror();
347 }
348 if (_java_mirror == NULL) {
349 _java_mirror = ciKlass::java_mirror();
350 }
351 return _java_mirror;
352 }
353
354 // ------------------------------------------------------------------
355 // ciInstanceKlass::unique_concrete_subklass
356 ciInstanceKlass* ciInstanceKlass::unique_concrete_subklass() {
357 if (!is_loaded()) return NULL; // No change if class is not loaded
358 if (!is_abstract()) return NULL; // Only applies to abstract classes.
359 if (!has_subklass()) return NULL; // Must have at least one subklass.
360 VM_ENTRY_MARK;
361 InstanceKlass* ik = get_instanceKlass();
362 Klass* up = ik->up_cast_abstract();
363 assert(up->is_instance_klass(), "must be InstanceKlass");
364 if (ik == up) {
365 return NULL;
366 }
367 return CURRENT_THREAD_ENV->get_instance_klass(up);
368 }
369
370 // ------------------------------------------------------------------
371 // ciInstanceKlass::has_finalizable_subclass
372 bool ciInstanceKlass::has_finalizable_subclass() {
373 if (!is_loaded()) return true;
374 VM_ENTRY_MARK;
375 return Dependencies::find_finalizable_subclass(get_instanceKlass()) != NULL;
376 }
377
378 // ------------------------------------------------------------------
379 // ciInstanceKlass::get_field_by_offset
380 ciField* ciInstanceKlass::get_field_by_offset(int field_offset, bool is_static) {
381 if (!is_static) {
382 for (int i = 0, len = nof_nonstatic_fields(); i < len; i++) {
383 ciField* field = _nonstatic_fields->at(i);
384 int field_off = field->offset_in_bytes();
385 if (field_off == field_offset)
386 return field;
387 if (field_off > field_offset)
388 break;
389 // could do binary search or check bins, but probably not worth it
390 }
391 return NULL;
392 }
393 VM_ENTRY_MARK;
394 InstanceKlass* k = get_instanceKlass();
395 fieldDescriptor fd;
396 if (!k->find_field_from_offset(field_offset, is_static, &fd)) {
397 return NULL;
398 }
399 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
400 return field;
401 }
402
403 // ------------------------------------------------------------------
404 // ciInstanceKlass::get_field_type_by_offset
405 ciType* ciInstanceKlass::get_field_type_by_offset(int field_offset) {
406 ASSERT_IN_VM;
407 fieldDescriptor fd;
408 InstanceKlass* klass = get_instanceKlass();
409 // Important: We cannot get the field type via get_field_by_offset() because if the field
410 // is another value type, the offset would refer to the first field of that value type due
411 // to flattening. Instead, do a SystemDictionary lookup for the type of the declared field.
412 bool found = klass->find_field_from_offset(field_offset, false, &fd);
413 assert(found, "field not found");
414 BasicType field_type = fd.field_type();
415 if (is_java_primitive(field_type)) {
416 // Primitive type
417 return ciType::make(field_type);
418 } else {
419 // Do a SystemDictionary lookup for the type
420 ciEnv* env = CURRENT_ENV;
421 ciSymbol* signature = env->get_symbol(fd.signature());
422 return env->get_klass_by_name_impl(this, constantPoolHandle(), signature, false);
423 }
424 }
425
426 // ------------------------------------------------------------------
427 // ciInstanceKlass::get_field_by_name
428 ciField* ciInstanceKlass::get_field_by_name(ciSymbol* name, ciSymbol* signature, bool is_static) {
429 VM_ENTRY_MARK;
430 InstanceKlass* k = get_instanceKlass();
431 fieldDescriptor fd;
432 Klass* def = k->find_field(name->get_symbol(), signature->get_symbol(), is_static, &fd);
433 if (def == NULL) {
434 return NULL;
435 }
436 ciField* field = new (CURRENT_THREAD_ENV->arena()) ciField(&fd);
437 return field;
438 }
439
440
441 static int sort_field_by_offset(ciField** a, ciField** b) {
442 return (*a)->offset_in_bytes() - (*b)->offset_in_bytes();
443 // (no worries about 32-bit overflow...)
444 }
445
446 // ------------------------------------------------------------------
447 // ciInstanceKlass::compute_nonstatic_fields
448 int ciInstanceKlass::compute_nonstatic_fields() {
449 assert(is_loaded(), "must be loaded");
450
451 if (_nonstatic_fields != NULL)
452 return _nonstatic_fields->length();
453
454 if (!has_nonstatic_fields()) {
455 Arena* arena = CURRENT_ENV->arena();
456 _nonstatic_fields = new (arena) GrowableArray<ciField*>(arena, 0, 0, NULL);
457 _nof_declared_nonstatic_fields = 0;
458 return 0;
459 }
460 assert(!is_java_lang_Object(), "bootstrap OK");
461
462 // Size in bytes of my fields, including inherited fields.
463 int fsize = nonstatic_field_size() * heapOopSize;
464
465 ciInstanceKlass* super = this->super();
466 GrowableArray<ciField*>* super_fields = NULL;
467 if (super != NULL && super->has_nonstatic_fields()) {
468 int super_fsize = super->nonstatic_field_size() * heapOopSize;
469 int super_flen = super->nof_nonstatic_fields();
470 super_fields = super->_nonstatic_fields;
471 assert(super_flen == 0 || super_fields != NULL, "first get nof_fields");
472 // See if I am no larger than my super; if so, I can use his fields.
473 if (fsize == super_fsize) {
474 _nonstatic_fields = super_fields;
475 _nof_declared_nonstatic_fields = super->nof_declared_nonstatic_fields();
476 return super_fields->length();
477 }
478 }
479
480 GrowableArray<ciField*>* fields = NULL;
481 GUARDED_VM_ENTRY({
482 fields = compute_nonstatic_fields_impl(super_fields);
483 });
484
485 if (fields == NULL) {
486 // This can happen if this class (java.lang.Class) has invisible fields.
487 if (super_fields != NULL) {
488 _nonstatic_fields = super_fields;
489 _nof_declared_nonstatic_fields = super->nof_declared_nonstatic_fields();
490 return super_fields->length();
491 } else {
492 _nof_declared_nonstatic_fields = 0;
493 return 0;
494 }
495 }
496
497 int flen = fields->length();
498
499 // Now sort them by offset, ascending.
500 // (In principle, they could mix with superclass fields.)
501 fields->sort(sort_field_by_offset);
502 _nonstatic_fields = fields;
503 return flen;
504 }
505
506 GrowableArray<ciField*>*
507 ciInstanceKlass::compute_nonstatic_fields_impl(GrowableArray<ciField*>*
508 super_fields) {
509 ASSERT_IN_VM;
510 Arena* arena = CURRENT_ENV->arena();
511 int flen = 0;
512 GrowableArray<ciField*>* fields = NULL;
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) {
521 _nof_declared_nonstatic_fields = flen;
522 return NULL; // return nothing if none are locally declared
523 }
524
525 if (super_fields != NULL) {
526 flen += super_fields->length();
527 }
528 _nof_declared_nonstatic_fields = flen;
529
530 fields = new (arena) GrowableArray<ciField*>(arena, flen, 0, NULL);
531 if (super_fields != NULL) {
532 fields->appendAll(super_fields);
533 }
534
535 for (JavaFieldStream fs(k); !fs.done(); fs.next()) {
536 if (fs.access_flags().is_static()) continue;
537 fieldDescriptor& fd = fs.field_descriptor();
538 if (fd.field_type() == T_VALUETYPE) {
539 // Value type fields are embedded
540 int field_offset = fd.offset();
541 // Get ValueKlass and adjust number of fields
542 ciValueKlass* vk = get_field_type_by_offset(field_offset)->as_value_klass();
543 flen += vk->flattened_field_count() - 1;
544 // Iterate over fields of the flattened value type and copy them to 'this'
545 for (int i = 0; i < vk->nof_nonstatic_fields(); ++i) {
546 ciField* flattened_field = vk->nonstatic_field_at(i);
547 // Adjust offset to account for missing oop header
548 int offset = field_offset + (flattened_field->offset() - vk->first_field_offset());
549 // A flattened field can be treated as final if the non-flattened
550 // field is declared final or the holder klass is a value type itself.
551 bool is_final = fd.is_final() || is_valuetype();
552 ciField* field = new (arena) ciField(flattened_field, this, offset, is_final);
553 fields->append(field);
554 }
555 } else {
556 ciField* field = new (arena) ciField(&fd);
557 fields->append(field);
558 }
559 }
560 assert(fields->length() == flen, "sanity");
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() != NULL && super()->has_injected_fields()) {
580 has_injected_fields = 1;
581 } else {
582 GUARDED_VM_ENTRY({
583 has_injected_fields = compute_injected_fields_helper() ? 1 : 0;
584 });
585 }
586 // may be concurrently initialized for shared ciInstanceKlass objects
587 assert(_has_injected_fields == -1 || _has_injected_fields == has_injected_fields, "broken concurrent initialization");
588 _has_injected_fields = has_injected_fields;
589 }
590
591 // ------------------------------------------------------------------
592 // ciInstanceKlass::find_method
593 //
594 // Find a method in this klass.
595 ciMethod* ciInstanceKlass::find_method(ciSymbol* name, ciSymbol* signature) {
596 VM_ENTRY_MARK;
597 InstanceKlass* k = get_instanceKlass();
598 Symbol* name_sym = name->get_symbol();
599 Symbol* sig_sym= signature->get_symbol();
600
601 Method* m = k->find_method(name_sym, sig_sym);
602 if (m == NULL) return NULL;
603
604 return CURRENT_THREAD_ENV->get_method(m);
605 }
606
607 // ------------------------------------------------------------------
608 // ciInstanceKlass::is_leaf_type
609 bool ciInstanceKlass::is_leaf_type() {
610 assert(is_loaded(), "must be loaded");
611 if (is_shared()) {
612 return is_final(); // approximately correct
613 } else {
614 return !_has_subklass && (nof_implementors() == 0);
615 }
616 }
617
618 // ------------------------------------------------------------------
619 // ciInstanceKlass::implementor
620 //
621 // Report an implementor of this interface.
622 // Note that there are various races here, since my copy
623 // of _nof_implementors might be out of date with respect
624 // to results returned by InstanceKlass::implementor.
625 // This is OK, since any dependencies we decide to assert
626 // will be checked later under the Compile_lock.
627 ciInstanceKlass* ciInstanceKlass::implementor() {
628 ciInstanceKlass* impl = _implementor;
629 if (impl == NULL) {
630 // Go into the VM to fetch the implementor.
631 {
632 VM_ENTRY_MARK;
633 Klass* k = get_instanceKlass()->implementor();
634 if (k != NULL) {
635 if (k == get_instanceKlass()) {
636 // More than one implementors. Use 'this' in this case.
637 impl = this;
638 } else {
639 impl = CURRENT_THREAD_ENV->get_instance_klass(k);
640 }
641 }
642 }
643 // Memoize this result.
644 if (!is_shared()) {
645 _implementor = impl;
646 }
647 }
648 return impl;
649 }
650
651 // Utility class for printing of the contents of the static fields for
652 // use by compilation replay. It only prints out the information that
653 // could be consumed by the compiler, so for primitive types it prints
654 // out the actual value. For Strings it's the actual string value.
655 // For array types it it's first level array size since that's the
656 // only value which statically unchangeable. For all other reference
657 // types it simply prints out the dynamic type.
658
659 class StaticFieldPrinter : public FieldClosure {
660 protected:
661 outputStream* _out;
662 public:
663 StaticFieldPrinter(outputStream* out) :
664 _out(out) {
665 }
666 void do_field_helper(fieldDescriptor* fd, oop obj, bool flattened);
667 };
668
669 class StaticFinalFieldPrinter : public StaticFieldPrinter {
670 const char* _holder;
671 public:
672 StaticFinalFieldPrinter(outputStream* out, const char* holder) :
673 StaticFieldPrinter(out), _holder(holder) {
674 }
675 void do_field(fieldDescriptor* fd) {
676 if (fd->is_final() && !fd->has_initial_value()) {
677 ResourceMark rm;
678 InstanceKlass* holder = fd->field_holder();
679 oop mirror = holder->java_mirror();
680 _out->print("staticfield %s %s %s ", _holder, fd->name()->as_quoted_ascii(), fd->signature()->as_quoted_ascii());
681 do_field_helper(fd, mirror, false);
682 _out->cr();
683 }
684 }
685 };
686
687 class ValueTypeFieldPrinter : public StaticFieldPrinter {
688 oop _obj;
689 public:
690 ValueTypeFieldPrinter(outputStream* out, oop obj) :
691 StaticFieldPrinter(out), _obj(obj) {
692 }
693 void do_field(fieldDescriptor* fd) {
694 do_field_helper(fd, _obj, true);
695 _out->print(" ");
696 }
697 };
698
699 void StaticFieldPrinter::do_field_helper(fieldDescriptor* fd, oop mirror, bool flattened) {
700 switch (fd->field_type()) {
701 case T_BYTE: _out->print("%d", mirror->byte_field(fd->offset())); break;
702 case T_BOOLEAN: _out->print("%d", mirror->bool_field(fd->offset())); break;
703 case T_SHORT: _out->print("%d", mirror->short_field(fd->offset())); break;
704 case T_CHAR: _out->print("%d", mirror->char_field(fd->offset())); break;
705 case T_INT: _out->print("%d", mirror->int_field(fd->offset())); break;
706 case T_LONG: _out->print(INT64_FORMAT, (int64_t)(mirror->long_field(fd->offset()))); break;
707 case T_FLOAT: {
708 float f = mirror->float_field(fd->offset());
709 _out->print("%d", *(int*)&f);
710 break;
711 }
712 case T_DOUBLE: {
713 double d = mirror->double_field(fd->offset());
714 _out->print(INT64_FORMAT, *(int64_t*)&d);
715 break;
716 }
717 case T_ARRAY: {
718 oop value = mirror->obj_field_acquire(fd->offset());
719 if (value == NULL) {
720 _out->print("null");
721 } else {
722 typeArrayOop ta = (typeArrayOop)value;
723 _out->print("%d", ta->length());
724 if (value->is_objArray()) {
725 objArrayOop oa = (objArrayOop)value;
726 const char* klass_name = value->klass()->name()->as_quoted_ascii();
727 _out->print(" %s", klass_name);
728 }
729 }
730 break;
731 }
732 case T_OBJECT: {
733 oop value = mirror->obj_field_acquire(fd->offset());
734 if (value == NULL) {
735 _out->print("null");
736 } else if (value->is_instance()) {
737 if (value->is_a(SystemDictionary::String_klass())) {
738 _out->print("\"");
739 _out->print_raw(java_lang_String::as_quoted_ascii(value));
740 _out->print("\"");
741 } else {
742 const char* klass_name = value->klass()->name()->as_quoted_ascii();
743 _out->print("%s", klass_name);
744 }
745 } else {
746 ShouldNotReachHere();
747 }
748 break;
749 }
750 case T_VALUETYPE: {
751 ResetNoHandleMark rnhm;
752 Thread* THREAD = Thread::current();
753 SignatureStream ss(fd->signature(), false);
754 Symbol* name = ss.as_symbol(THREAD);
755 assert(!HAS_PENDING_EXCEPTION, "can resolve klass?");
756 InstanceKlass* holder = fd->field_holder();
757 Klass* k = SystemDictionary::find(name, Handle(holder->class_loader()), Handle(holder->protection_domain()), THREAD);
758 assert(k != NULL && !HAS_PENDING_EXCEPTION, "can resolve klass?");
759 ValueKlass* vk = ValueKlass::cast(k);
760 oop obj;
761 if (flattened) {
762 int field_offset = fd->offset() - vk->first_field_offset();
763 obj = (oop)((address)mirror + field_offset);
764 } else {
765 obj = mirror->obj_field_acquire(fd->offset());
766 }
767 ValueTypeFieldPrinter print_field(_out, obj);
768 vk->do_nonstatic_fields(&print_field);
769 break;
770 }
771 default:
772 ShouldNotReachHere();
773 }
774 }
775
776 void ciInstanceKlass::dump_replay_data(outputStream* out) {
777 ResourceMark rm;
778
779 InstanceKlass* ik = get_instanceKlass();
780 ConstantPool* cp = ik->constants();
781
782 // Try to record related loaded classes
783 Klass* sub = ik->subklass();
784 while (sub != NULL) {
785 if (sub->is_instance_klass()) {
786 out->print_cr("instanceKlass %s", sub->name()->as_quoted_ascii());
787 }
788 sub = sub->next_sibling();
789 }
790
791 // Dump out the state of the constant pool tags. During replay the
792 // tags will be validated for things which shouldn't change and
793 // classes will be resolved if the tags indicate that they were
794 // resolved at compile time.
795 out->print("ciInstanceKlass %s %d %d %d", ik->name()->as_quoted_ascii(),
796 is_linked(), is_initialized(), cp->length());
797 for (int index = 1; index < cp->length(); index++) {
798 out->print(" %d", cp->tags()->at(index));
799 }
800 out->cr();
801 if (is_initialized()) {
802 // Dump out the static final fields in case the compilation relies
803 // on their value for correct replay.
804 StaticFinalFieldPrinter sffp(out, ik->name()->as_quoted_ascii());
805 ik->do_local_static_fields(&sffp);
806 }
807 }