1 /*
2 * Copyright (c) 2017, 2024, 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 "cds/archiveUtils.hpp"
27 #include "cds/cdsConfig.hpp"
28 #include "classfile/vmSymbols.hpp"
29 #include "code/codeCache.hpp"
30 #include "gc/shared/barrierSet.hpp"
31 #include "gc/shared/collectedHeap.inline.hpp"
32 #include "gc/shared/gcLocker.inline.hpp"
33 #include "interpreter/interpreter.hpp"
34 #include "logging/log.hpp"
35 #include "memory/metaspaceClosure.hpp"
36 #include "memory/metadataFactory.hpp"
37 #include "oops/access.hpp"
38 #include "oops/compressedOops.inline.hpp"
39 #include "oops/fieldStreams.inline.hpp"
40 #include "oops/flatArrayKlass.hpp"
41 #include "oops/inlineKlass.inline.hpp"
42 #include "oops/instanceKlass.inline.hpp"
43 #include "oops/method.hpp"
44 #include "oops/oop.inline.hpp"
45 #include "oops/objArrayKlass.hpp"
46 #include "runtime/fieldDescriptor.inline.hpp"
47 #include "runtime/handles.inline.hpp"
48 #include "runtime/safepointVerifiers.hpp"
49 #include "runtime/sharedRuntime.hpp"
50 #include "runtime/signature.hpp"
51 #include "runtime/thread.inline.hpp"
52 #include "utilities/copy.hpp"
53
54 // Constructor
55 InlineKlass::InlineKlass(const ClassFileParser& parser)
56 : InstanceKlass(parser, InlineKlass::Kind) {
57 set_prototype_header(markWord::inline_type_prototype());
58 assert(is_inline_klass(), "sanity");
59 assert(prototype_header().is_inline_type(), "sanity");
60 }
61
62 InlineKlass::InlineKlass() {
63 assert(CDSConfig::is_dumping_archive() || UseSharedSpaces, "only for CDS");
64 }
65
66 void InlineKlass::init_fixed_block() {
67 _adr_inlineklass_fixed_block = inlineklass_static_block();
68 // Addresses used for inline type calling convention
69 *((Array<SigEntry>**)adr_extended_sig()) = nullptr;
70 *((Array<VMRegPair>**)adr_return_regs()) = nullptr;
71 *((address*)adr_pack_handler()) = nullptr;
72 *((address*)adr_pack_handler_jobject()) = nullptr;
73 *((address*)adr_unpack_handler()) = nullptr;
74 assert(pack_handler() == nullptr, "pack handler not null");
75 *((address*)adr_value_array_klasses()) = nullptr;
76 set_default_value_offset(0);
77 set_null_reset_value_offset(0);
78 set_first_field_offset(-1);
79 set_payload_size_in_bytes(-1);
80 set_payload_alignment(-1);
81 set_non_atomic_size_in_bytes(-1);
82 set_non_atomic_alignment(-1);
83 set_atomic_size_in_bytes(-1);
84 set_nullable_size_in_bytes(-1);
85 set_null_marker_offset(-1);
86 }
87
88 void InlineKlass::set_default_value(oop val) {
89 assert(val != nullptr, "Sanity check");
90 assert(oopDesc::is_oop(val), "Sanity check");
91 assert(val->is_inline_type(), "Sanity check");
92 assert(val->klass() == this, "sanity check");
93 java_mirror()->obj_field_put(default_value_offset(), val);
94 }
95
96 void InlineKlass::set_null_reset_value(oop val) {
97 assert(val != nullptr, "Sanity check");
98 assert(oopDesc::is_oop(val), "Sanity check");
99 assert(val->is_inline_type(), "Sanity check");
100 assert(val->klass() == this, "sanity check");
101 java_mirror()->obj_field_put(null_reset_value_offset(), val);
102 }
103
104 instanceOop InlineKlass::allocate_instance(TRAPS) {
105 int size = size_helper(); // Query before forming handle.
106
107 instanceOop oop = (instanceOop)Universe::heap()->obj_allocate(this, size, CHECK_NULL);
108 assert(oop->mark().is_inline_type(), "Expected inline type");
109 return oop;
110 }
111
112 instanceOop InlineKlass::allocate_instance_buffer(TRAPS) {
113 int size = size_helper(); // Query before forming handle.
114
115 instanceOop oop = (instanceOop)Universe::heap()->obj_buffer_allocate(this, size, CHECK_NULL);
116 assert(oop->mark().is_inline_type(), "Expected inline type");
117 return oop;
118 }
119
120 int InlineKlass::nonstatic_oop_count() {
121 int oops = 0;
122 int map_count = nonstatic_oop_map_count();
123 OopMapBlock* block = start_of_nonstatic_oop_maps();
124 OopMapBlock* end = block + map_count;
125 while (block != end) {
126 oops += block->count();
127 block++;
128 }
129 return oops;
130 }
131
132 int InlineKlass::layout_size_in_bytes(LayoutKind kind) const {
133 switch(kind) {
134 case LayoutKind::NON_ATOMIC_FLAT:
135 assert(has_non_atomic_layout(), "Layout not available");
136 return non_atomic_size_in_bytes();
137 break;
138 case LayoutKind::ATOMIC_FLAT:
139 assert(has_atomic_layout(), "Layout not available");
140 return atomic_size_in_bytes();
141 break;
142 case LayoutKind::NULLABLE_ATOMIC_FLAT:
143 assert(has_nullable_layout(), "Layout not available");
144 return nullable_size_in_bytes();
145 break;
146 case PAYLOAD:
147 return payload_size_in_bytes();
148 break;
149 default:
150 ShouldNotReachHere();
151 }
152 }
153
154 int InlineKlass::layout_alignment(LayoutKind kind) const {
155 switch(kind) {
156 case LayoutKind::NON_ATOMIC_FLAT:
157 assert(has_non_atomic_layout(), "Layout not available");
158 return non_atomic_alignment();
159 break;
160 case LayoutKind::ATOMIC_FLAT:
161 assert(has_atomic_layout(), "Layout not available");
162 return atomic_size_in_bytes();
163 break;
164 case LayoutKind::NULLABLE_ATOMIC_FLAT:
165 assert(has_nullable_layout(), "Layout not available");
166 return nullable_size_in_bytes();
167 break;
168 case LayoutKind::PAYLOAD:
169 return payload_alignment();
170 break;
171 default:
172 ShouldNotReachHere();
173 }
174 }
175
176 oop InlineKlass::read_flat_field(oop obj, int offset, LayoutKind lk, TRAPS) {
177
178 if (lk == LayoutKind::NULLABLE_ATOMIC_FLAT) {
179 InstanceKlass* recv = InstanceKlass::cast(obj->klass());
180 int nm_offset = offset + (null_marker_offset() - first_field_offset());
181 jbyte nm = obj->byte_field(nm_offset);
182 if (nm == 0) {
183 return nullptr;
184 }
185 }
186 oop res = nullptr;
187 assert(is_initialized() || is_being_initialized()|| is_in_error_state(),
188 "Must be initialized, initializing or in a corner case of an escaped instance of a class that failed its initialization");
189 if (is_empty_inline_type()) {
190 res = (instanceOop)default_value();
191 } else {
192 Handle obj_h(THREAD, obj);
193 res = allocate_instance_buffer(CHECK_NULL);
194 inline_copy_payload_to_new_oop(((char*)(oopDesc*)obj_h()) + offset, res, lk);
195 }
196 assert(res != nullptr, "Must be set in one of two paths above");
197 return res;
198 }
199
200 void InlineKlass::write_flat_field(oop obj, int offset, oop value, bool is_null_free, LayoutKind lk, TRAPS) {
201 if (is_null_free && value == nullptr) {
202 THROW(vmSymbols::java_lang_NullPointerException());
203 }
204 assert(!is_null_free || (lk == LayoutKind::ATOMIC_FLAT || lk == LayoutKind::NON_ATOMIC_FLAT || lk == LayoutKind::REFERENCE || lk == LayoutKind::PAYLOAD), "Consistency check");
205 inline_copy_oop_to_payload(value, ((char*)(oopDesc*)obj) + offset, lk);
206 }
207
208 // Arrays of...
209
210 bool InlineKlass::flat_array() {
211 if (!UseFlatArray) {
212 return false;
213 }
214 // Too big
215 int elem_bytes = payload_size_in_bytes();
216 if ((FlatArrayElementMaxSize >= 0) && (elem_bytes > FlatArrayElementMaxSize)) {
217 return false;
218 }
219 // Too many embedded oops
220 if ((FlatArrayElementMaxOops >= 0) && (nonstatic_oop_count() > FlatArrayElementMaxOops)) {
221 return false;
222 }
223 // Declared atomic but not naturally atomic.
224 if (must_be_atomic() && !is_naturally_atomic()) {
225 return false;
226 }
227 // VM enforcing InlineArrayAtomicAccess only...
228 if (InlineArrayAtomicAccess && (!is_naturally_atomic())) {
229 return false;
230 }
231 return true;
232 }
233
234 Klass* InlineKlass::value_array_klass(int n, TRAPS) {
235 if (Atomic::load_acquire(adr_value_array_klasses()) == nullptr) {
236 // Atomic creation of array_klasses
237 RecursiveLocker rl(MultiArray_lock, THREAD);
238
239 // Check if update has already taken place
240 if (value_array_klasses() == nullptr) {
241 ArrayKlass* k;
242 if (flat_array()) {
243 k = FlatArrayKlass::allocate_klass(this, CHECK_NULL);
244 } else {
245 k = ObjArrayKlass::allocate_objArray_klass(class_loader_data(), 1, this, true, CHECK_NULL);
246
247 }
248 // use 'release' to pair with lock-free load
249 Atomic::release_store(adr_value_array_klasses(), k);
250 }
251 }
252 ArrayKlass* ak = value_array_klasses();
253 return ak->array_klass(n, THREAD);
254 }
255
256 Klass* InlineKlass::value_array_klass_or_null(int n) {
257 // Need load-acquire for lock-free read
258 ArrayKlass* ak = Atomic::load_acquire(adr_value_array_klasses());
259 if (ak == nullptr) {
260 return nullptr;
261 } else {
262 return ak->array_klass_or_null(n);
263 }
264 }
265
266 Klass* InlineKlass::value_array_klass(TRAPS) {
267 return value_array_klass(1, THREAD);
268 }
269
270 Klass* InlineKlass::value_array_klass_or_null() {
271 return value_array_klass_or_null(1);
272 }
273
274 // Inline type arguments are not passed by reference, instead each
275 // field of the inline type is passed as an argument. This helper
276 // function collects the flat field (recursively)
277 // in a list. Included with the field's type is
278 // the offset of each field in the inline type: i2c and c2i adapters
279 // need that to load or store fields. Finally, the list of fields is
280 // sorted in order of increasing offsets: the adapters and the
281 // compiled code need to agree upon the order of fields.
282 //
283 // The list of basic types that is returned starts with a T_METADATA
284 // and ends with an extra T_VOID. T_METADATA/T_VOID pairs are used as
285 // delimiters. Every entry between the two is a field of the inline
286 // type. If there's an embedded inline type in the list, it also starts
287 // with a T_METADATA and ends with a T_VOID. This is so we can
288 // generate a unique fingerprint for the method's adapters and we can
289 // generate the list of basic types from the interpreter point of view
290 // (inline types passed as reference: iterate on the list until a
291 // T_METADATA, drop everything until and including the closing
292 // T_VOID) or the compiler point of view (each field of the inline
293 // types is an argument: drop all T_METADATA/T_VOID from the list).
294 //
295 // Value classes could also have fields in abstract super value classes.
296 // Use a HierarchicalFieldStream to get them as well.
297 int InlineKlass::collect_fields(GrowableArray<SigEntry>* sig, int base_off) {
298 int count = 0;
299 SigEntry::add_entry(sig, T_METADATA, name(), base_off);
300 for (HierarchicalFieldStream<JavaFieldStream> fs(this); !fs.done(); fs.next()) {
301 if (fs.access_flags().is_static()) continue;
302 int offset = base_off + fs.offset() - (base_off > 0 ? first_field_offset() : 0);
303 // TODO 8284443 Use different heuristic to decide what should be scalarized in the calling convention
304 if (fs.is_flat()) {
305 // Resolve klass of flat field and recursively collect fields
306 Klass* vk = get_inline_type_field_klass(fs.index());
307 count += InlineKlass::cast(vk)->collect_fields(sig, offset);
308 } else {
309 BasicType bt = Signature::basic_type(fs.signature());
310 SigEntry::add_entry(sig, bt, fs.signature(), offset);
311 count += type2size[bt];
312 }
313 }
314 int offset = base_off + size_helper()*HeapWordSize - (base_off > 0 ? first_field_offset() : 0);
315 SigEntry::add_entry(sig, T_VOID, name(), offset);
316 if (base_off == 0) {
317 sig->sort(SigEntry::compare);
318 }
319 assert(sig->at(0)._bt == T_METADATA && sig->at(sig->length()-1)._bt == T_VOID, "broken structure");
320 return count;
321 }
322
323 void InlineKlass::initialize_calling_convention(TRAPS) {
324 // Because the pack and unpack handler addresses need to be loadable from generated code,
325 // they are stored at a fixed offset in the klass metadata. Since inline type klasses do
326 // not have a vtable, the vtable offset is used to store these addresses.
327 if (InlineTypeReturnedAsFields || InlineTypePassFieldsAsArgs) {
328 ResourceMark rm;
329 GrowableArray<SigEntry> sig_vk;
330 int nb_fields = collect_fields(&sig_vk);
331 Array<SigEntry>* extended_sig = MetadataFactory::new_array<SigEntry>(class_loader_data(), sig_vk.length(), CHECK);
332 *((Array<SigEntry>**)adr_extended_sig()) = extended_sig;
333 for (int i = 0; i < sig_vk.length(); i++) {
334 extended_sig->at_put(i, sig_vk.at(i));
335 }
336 if (can_be_returned_as_fields(/* init= */ true)) {
337 nb_fields++;
338 BasicType* sig_bt = NEW_RESOURCE_ARRAY(BasicType, nb_fields);
339 sig_bt[0] = T_METADATA;
340 SigEntry::fill_sig_bt(&sig_vk, sig_bt+1);
341 VMRegPair* regs = NEW_RESOURCE_ARRAY(VMRegPair, nb_fields);
342 int total = SharedRuntime::java_return_convention(sig_bt, regs, nb_fields);
343
344 if (total > 0) {
345 Array<VMRegPair>* return_regs = MetadataFactory::new_array<VMRegPair>(class_loader_data(), nb_fields, CHECK);
346 *((Array<VMRegPair>**)adr_return_regs()) = return_regs;
347 for (int i = 0; i < nb_fields; i++) {
348 return_regs->at_put(i, regs[i]);
349 }
350
351 BufferedInlineTypeBlob* buffered_blob = SharedRuntime::generate_buffered_inline_type_adapter(this);
352 *((address*)adr_pack_handler()) = buffered_blob->pack_fields();
353 *((address*)adr_pack_handler_jobject()) = buffered_blob->pack_fields_jobject();
354 *((address*)adr_unpack_handler()) = buffered_blob->unpack_fields();
355 assert(CodeCache::find_blob(pack_handler()) == buffered_blob, "lost track of blob");
356 assert(can_be_returned_as_fields(), "sanity");
357 }
358 }
359 if (!can_be_returned_as_fields() && !can_be_passed_as_fields()) {
360 MetadataFactory::free_array<SigEntry>(class_loader_data(), extended_sig);
361 assert(return_regs() == nullptr, "sanity");
362 }
363 }
364 }
365
366 void InlineKlass::deallocate_contents(ClassLoaderData* loader_data) {
367 if (extended_sig() != nullptr) {
368 MetadataFactory::free_array<SigEntry>(loader_data, extended_sig());
369 *((Array<SigEntry>**)adr_extended_sig()) = nullptr;
370 }
371 if (return_regs() != nullptr) {
372 MetadataFactory::free_array<VMRegPair>(loader_data, return_regs());
373 *((Array<VMRegPair>**)adr_return_regs()) = nullptr;
374 }
375 cleanup_blobs();
376 InstanceKlass::deallocate_contents(loader_data);
377 }
378
379 void InlineKlass::cleanup(InlineKlass* ik) {
380 ik->cleanup_blobs();
381 }
382
383 void InlineKlass::cleanup_blobs() {
384 if (pack_handler() != nullptr) {
385 CodeBlob* buffered_blob = CodeCache::find_blob(pack_handler());
386 assert(buffered_blob->is_buffered_inline_type_blob(), "bad blob type");
387 BufferBlob::free((BufferBlob*)buffered_blob);
388 *((address*)adr_pack_handler()) = nullptr;
389 *((address*)adr_pack_handler_jobject()) = nullptr;
390 *((address*)adr_unpack_handler()) = nullptr;
391 }
392 }
393
394 // Can this inline type be passed as multiple values?
395 bool InlineKlass::can_be_passed_as_fields() const {
396 return InlineTypePassFieldsAsArgs;
397 }
398
399 // Can this inline type be returned as multiple values?
400 bool InlineKlass::can_be_returned_as_fields(bool init) const {
401 return InlineTypeReturnedAsFields && (init || return_regs() != nullptr);
402 }
403
404 // Create handles for all oop fields returned in registers that are going to be live across a safepoint
405 void InlineKlass::save_oop_fields(const RegisterMap& reg_map, GrowableArray<Handle>& handles) const {
406 Thread* thread = Thread::current();
407 const Array<SigEntry>* sig_vk = extended_sig();
408 const Array<VMRegPair>* regs = return_regs();
409 int j = 1;
410
411 for (int i = 0; i < sig_vk->length(); i++) {
412 BasicType bt = sig_vk->at(i)._bt;
413 if (bt == T_OBJECT || bt == T_ARRAY) {
414 VMRegPair pair = regs->at(j);
415 address loc = reg_map.location(pair.first(), nullptr);
416 oop v = *(oop*)loc;
417 assert(v == nullptr || oopDesc::is_oop(v), "not an oop?");
418 assert(Universe::heap()->is_in_or_null(v), "must be heap pointer");
419 handles.push(Handle(thread, v));
420 }
421 if (bt == T_METADATA) {
422 continue;
423 }
424 if (bt == T_VOID &&
425 sig_vk->at(i-1)._bt != T_LONG &&
426 sig_vk->at(i-1)._bt != T_DOUBLE) {
427 continue;
428 }
429 j++;
430 }
431 assert(j == regs->length(), "missed a field?");
432 }
433
434 // Update oop fields in registers from handles after a safepoint
435 void InlineKlass::restore_oop_results(RegisterMap& reg_map, GrowableArray<Handle>& handles) const {
436 assert(InlineTypeReturnedAsFields, "Inline types should never be returned as fields");
437 const Array<SigEntry>* sig_vk = extended_sig();
438 const Array<VMRegPair>* regs = return_regs();
439 assert(regs != nullptr, "inconsistent");
440
441 int j = 1;
442 for (int i = 0, k = 0; i < sig_vk->length(); i++) {
443 BasicType bt = sig_vk->at(i)._bt;
444 if (bt == T_OBJECT || bt == T_ARRAY) {
445 VMRegPair pair = regs->at(j);
446 address loc = reg_map.location(pair.first(), nullptr);
447 *(oop*)loc = handles.at(k++)();
448 }
449 if (bt == T_METADATA) {
450 continue;
451 }
452 if (bt == T_VOID &&
453 sig_vk->at(i-1)._bt != T_LONG &&
454 sig_vk->at(i-1)._bt != T_DOUBLE) {
455 continue;
456 }
457 j++;
458 }
459 assert(j == regs->length(), "missed a field?");
460 }
461
462 // Fields are in registers. Create an instance of the inline type and
463 // initialize it with the values of the fields.
464 oop InlineKlass::realloc_result(const RegisterMap& reg_map, const GrowableArray<Handle>& handles, TRAPS) {
465 oop new_vt = allocate_instance(CHECK_NULL);
466 const Array<SigEntry>* sig_vk = extended_sig();
467 const Array<VMRegPair>* regs = return_regs();
468
469 int j = 1;
470 int k = 0;
471 for (int i = 0; i < sig_vk->length(); i++) {
472 BasicType bt = sig_vk->at(i)._bt;
473 if (bt == T_METADATA) {
474 continue;
475 }
476 if (bt == T_VOID) {
477 if (sig_vk->at(i-1)._bt == T_LONG ||
478 sig_vk->at(i-1)._bt == T_DOUBLE) {
479 j++;
480 }
481 continue;
482 }
483 int off = sig_vk->at(i)._offset;
484 assert(off > 0, "offset in object should be positive");
485 VMRegPair pair = regs->at(j);
486 address loc = reg_map.location(pair.first(), nullptr);
487 switch(bt) {
488 case T_BOOLEAN: {
489 new_vt->bool_field_put(off, *(jboolean*)loc);
490 break;
491 }
492 case T_CHAR: {
493 new_vt->char_field_put(off, *(jchar*)loc);
494 break;
495 }
496 case T_BYTE: {
497 new_vt->byte_field_put(off, *(jbyte*)loc);
498 break;
499 }
500 case T_SHORT: {
501 new_vt->short_field_put(off, *(jshort*)loc);
502 break;
503 }
504 case T_INT: {
505 new_vt->int_field_put(off, *(jint*)loc);
506 break;
507 }
508 case T_LONG: {
509 #ifdef _LP64
510 new_vt->double_field_put(off, *(jdouble*)loc);
511 #else
512 Unimplemented();
513 #endif
514 break;
515 }
516 case T_OBJECT:
517 case T_ARRAY: {
518 Handle handle = handles.at(k++);
519 new_vt->obj_field_put(off, handle());
520 break;
521 }
522 case T_FLOAT: {
523 new_vt->float_field_put(off, *(jfloat*)loc);
524 break;
525 }
526 case T_DOUBLE: {
527 new_vt->double_field_put(off, *(jdouble*)loc);
528 break;
529 }
530 default:
531 ShouldNotReachHere();
532 }
533 *(intptr_t*)loc = 0xDEAD;
534 j++;
535 }
536 assert(j == regs->length(), "missed a field?");
537 assert(k == handles.length(), "missed an oop?");
538 return new_vt;
539 }
540
541 // Check the return register for an InlineKlass oop
542 InlineKlass* InlineKlass::returned_inline_klass(const RegisterMap& map) {
543 BasicType bt = T_METADATA;
544 VMRegPair pair;
545 int nb = SharedRuntime::java_return_convention(&bt, &pair, 1);
546 assert(nb == 1, "broken");
547
548 address loc = map.location(pair.first(), nullptr);
549 intptr_t ptr = *(intptr_t*)loc;
550 if (is_set_nth_bit(ptr, 0)) {
551 // Return value is tagged, must be an InlineKlass pointer
552 clear_nth_bit(ptr, 0);
553 assert(Metaspace::contains((void*)ptr), "should be klass");
554 InlineKlass* vk = (InlineKlass*)ptr;
555 assert(vk->can_be_returned_as_fields(), "must be able to return as fields");
556 return vk;
557 }
558 // Return value is not tagged, must be a valid oop
559 assert(oopDesc::is_oop_or_null(cast_to_oop(ptr), true),
560 "Bad oop return: " PTR_FORMAT, ptr);
561 return nullptr;
562 }
563
564 // CDS support
565
566 void InlineKlass::metaspace_pointers_do(MetaspaceClosure* it) {
567 InstanceKlass::metaspace_pointers_do(it);
568
569 InlineKlass* this_ptr = this;
570 it->push((Klass**)adr_value_array_klasses());
571 }
572
573 void InlineKlass::remove_unshareable_info() {
574 InstanceKlass::remove_unshareable_info();
575
576 // update it to point to the "buffered" copy of this class.
577 _adr_inlineklass_fixed_block = inlineklass_static_block();
578 ArchivePtrMarker::mark_pointer((address*)&_adr_inlineklass_fixed_block);
579
580 *((Array<SigEntry>**)adr_extended_sig()) = nullptr;
581 *((Array<VMRegPair>**)adr_return_regs()) = nullptr;
582 *((address*)adr_pack_handler()) = nullptr;
583 *((address*)adr_pack_handler_jobject()) = nullptr;
584 *((address*)adr_unpack_handler()) = nullptr;
585 assert(pack_handler() == nullptr, "pack handler not null");
586 if (value_array_klasses() != nullptr) {
587 value_array_klasses()->remove_unshareable_info();
588 }
589 }
590
591 void InlineKlass::remove_java_mirror() {
592 InstanceKlass::remove_java_mirror();
593 if (value_array_klasses() != nullptr) {
594 value_array_klasses()->remove_java_mirror();
595 }
596 }
597
598 void InlineKlass::restore_unshareable_info(ClassLoaderData* loader_data, Handle protection_domain, PackageEntry* pkg_entry, TRAPS) {
599 InstanceKlass::restore_unshareable_info(loader_data, protection_domain, pkg_entry, CHECK);
600 if (value_array_klasses() != nullptr) {
601 value_array_klasses()->restore_unshareable_info(ClassLoaderData::the_null_class_loader_data(), Handle(), CHECK);
602 }
603 }
604
605 // oop verify
606
607 void InlineKlass::verify_on(outputStream* st) {
608 InstanceKlass::verify_on(st);
609 guarantee(prototype_header().is_inline_type(), "Prototype header is not inline type");
610 }
611
612 void InlineKlass::oop_verify_on(oop obj, outputStream* st) {
613 InstanceKlass::oop_verify_on(obj, st);
614 guarantee(obj->mark().is_inline_type(), "Header is not inline type");
615 }