1 /*
2 * Copyright (c) 1999, 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/archiveBuilder.hpp"
27 #include "cds/cdsConfig.hpp"
28 #include "ci/ciConstant.hpp"
29 #include "ci/ciEnv.hpp"
30 #include "ci/ciField.hpp"
31 #include "ci/ciInstance.hpp"
32 #include "ci/ciInstanceKlass.hpp"
33 #include "ci/ciMethod.hpp"
34 #include "ci/ciNullObject.hpp"
35 #include "ci/ciReplay.hpp"
36 #include "ci/ciSymbols.hpp"
37 #include "ci/ciUtilities.inline.hpp"
38 #include "classfile/javaClasses.hpp"
39 #include "classfile/javaClasses.inline.hpp"
40 #include "classfile/systemDictionary.hpp"
41 #include "classfile/vmClasses.hpp"
42 #include "classfile/vmSymbols.hpp"
43 #include "code/codeCache.hpp"
44 #include "code/scopeDesc.hpp"
45 #include "code/SCCache.hpp"
46 #include "compiler/compilationLog.hpp"
47 #include "compiler/compilationPolicy.hpp"
48 #include "compiler/compileBroker.hpp"
49 #include "compiler/compilerEvent.hpp"
50 #include "compiler/compileLog.hpp"
51 #include "compiler/compileTask.hpp"
52 #include "compiler/disassembler.hpp"
53 #include "gc/shared/collectedHeap.inline.hpp"
54 #include "gc/shared/barrierSetNMethod.hpp"
55 #include "interpreter/bytecodeStream.hpp"
56 #include "interpreter/linkResolver.hpp"
57 #include "jfr/jfrEvents.hpp"
58 #include "jvm.h"
59 #include "logging/log.hpp"
60 #include "memory/allocation.inline.hpp"
61 #include "memory/oopFactory.hpp"
62 #include "memory/resourceArea.hpp"
63 #include "memory/universe.hpp"
64 #include "oops/constantPool.inline.hpp"
65 #include "oops/cpCache.inline.hpp"
66 #include "oops/method.inline.hpp"
67 #include "oops/methodData.hpp"
68 #include "oops/objArrayKlass.hpp"
69 #include "oops/objArrayOop.inline.hpp"
70 #include "oops/oop.inline.hpp"
71 #include "oops/resolvedIndyEntry.hpp"
72 #include "oops/symbolHandle.hpp"
73 #include "oops/trainingData.hpp"
74 #include "prims/jvmtiExport.hpp"
75 #include "prims/methodHandles.hpp"
76 #include "runtime/fieldDescriptor.inline.hpp"
77 #include "runtime/flags/flagSetting.hpp"
78 #include "runtime/handles.inline.hpp"
79 #include "runtime/init.hpp"
80 #include "runtime/javaThread.hpp"
81 #include "runtime/jniHandles.inline.hpp"
82 #include "runtime/reflection.hpp"
83 #include "runtime/safepointVerifiers.hpp"
84 #include "runtime/sharedRuntime.hpp"
85 #include "utilities/dtrace.hpp"
86 #include "utilities/macros.hpp"
87 #ifdef COMPILER1
88 #include "c1/c1_Runtime1.hpp"
89 #endif
90 #ifdef COMPILER2
91 #include "opto/runtime.hpp"
92 #endif
93
94 // ciEnv
95 //
96 // This class is the top level broker for requests from the compiler
97 // to the VM.
98
99 ciObject* ciEnv::_null_object_instance;
100
101 #define VM_CLASS_DEFN(name, ignore_s) ciInstanceKlass* ciEnv::_##name = nullptr;
102 VM_CLASSES_DO(VM_CLASS_DEFN)
103 #undef VM_CLASS_DEFN
104
105 ciSymbol* ciEnv::_unloaded_cisymbol = nullptr;
106 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = nullptr;
107 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = nullptr;
108
109 jobject ciEnv::_ArrayIndexOutOfBoundsException_handle = nullptr;
110 jobject ciEnv::_ArrayStoreException_handle = nullptr;
111 jobject ciEnv::_ClassCastException_handle = nullptr;
112
113 #ifndef PRODUCT
114 static bool firstEnv = true;
115 #endif /* PRODUCT */
116
117 // ------------------------------------------------------------------
118 // ciEnv::ciEnv
119 ciEnv::ciEnv(CompileTask* task)
120 : _ciEnv_arena(mtCompiler) {
121 VM_ENTRY_MARK;
122
123 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
124 thread->set_env(this);
125 assert(ciEnv::current() == this, "sanity");
126
127 _oop_recorder = nullptr;
128 _debug_info = nullptr;
129 _dependencies = nullptr;
130 _inc_decompile_count_on_failure = true;
131 _compilable = MethodCompilable;
132 _break_at_compile = false;
133 _compiler_data = nullptr;
134 #ifndef PRODUCT
135 assert(!firstEnv, "not initialized properly");
136 #endif /* !PRODUCT */
137
138 _num_inlined_bytecodes = 0;
139 assert(task == nullptr || thread->task() == task, "sanity");
140 if (task != nullptr) {
141 task->mark_started(os::elapsed_counter());
142 }
143 _task = task;
144 _log = nullptr;
145
146 // Temporary buffer for creating symbols and such.
147 _name_buffer = nullptr;
148 _name_buffer_len = 0;
149
150 _arena = &_ciEnv_arena;
151 _factory = new (_arena) ciObjectFactory(_arena, 128);
152
153 // Preload commonly referenced system ciObjects.
154
155 // During VM initialization, these instances have not yet been created.
156 // Assertions ensure that these instances are not accessed before
157 // their initialization.
158
159 assert(Universe::is_fully_initialized(), "should be complete");
160
161 oop o = Universe::null_ptr_exception_instance();
162 assert(o != nullptr, "should have been initialized");
163 _NullPointerException_instance = get_object(o)->as_instance();
164 o = Universe::arithmetic_exception_instance();
165 assert(o != nullptr, "should have been initialized");
166 _ArithmeticException_instance = get_object(o)->as_instance();
167
168 _ArrayIndexOutOfBoundsException_instance = nullptr;
169 _ArrayStoreException_instance = nullptr;
170 _ClassCastException_instance = nullptr;
171 _the_null_string = nullptr;
172 _the_min_jint_string = nullptr;
173
174 _jvmti_redefinition_count = 0;
175 _jvmti_can_hotswap_or_post_breakpoint = false;
176 _jvmti_can_access_local_variables = false;
177 _jvmti_can_post_on_exceptions = false;
178 _jvmti_can_pop_frame = false;
179
180 _scc_clinit_barriers_entry = nullptr;
181
182 _dyno_klasses = nullptr;
183 _dyno_locs = nullptr;
184 _dyno_name[0] = '\0';
185 }
186
187 // Record components of a location descriptor string. Components are appended by the constructor and
188 // removed by the destructor, like a stack, so scope matters. These location descriptors are used to
189 // locate dynamic classes, and terminate at a Method* or oop field associated with dynamic/hidden class.
190 //
191 // Example use:
192 //
193 // {
194 // RecordLocation fp(this, "field1");
195 // // location: "field1"
196 // { RecordLocation fp(this, " field2"); // location: "field1 field2" }
197 // // location: "field1"
198 // { RecordLocation fp(this, " field3"); // location: "field1 field3" }
199 // // location: "field1"
200 // }
201 // // location: ""
202 //
203 // Examples of actual locations
204 // @bci compiler/ciReplay/CiReplayBase$TestMain test (I)V 1 <appendix> argL0 ;
205 // // resolve invokedynamic at bci 1 of TestMain.test, then read field "argL0" from appendix
206 // @bci compiler/ciReplay/CiReplayBase$TestMain main ([Ljava/lang/String;)V 0 <appendix> form vmentry <vmtarget> ;
207 // // resolve invokedynamic at bci 0 of TestMain.main, then read field "form.vmentry.method.vmtarget" from appendix
208 // @cpi compiler/ciReplay/CiReplayBase$TestMain 56 form vmentry <vmtarget> ;
209 // // resolve MethodHandle at cpi 56 of TestMain, then read field "vmentry.method.vmtarget" from resolved MethodHandle
210 class RecordLocation {
211 private:
212 char* end;
213
214 ATTRIBUTE_PRINTF(3, 4)
215 void push(ciEnv* ci, const char* fmt, ...) {
216 va_list args;
217 va_start(args, fmt);
218 push_va(ci, fmt, args);
219 va_end(args);
220 }
221
222 public:
223 ATTRIBUTE_PRINTF(3, 0)
224 void push_va(ciEnv* ci, const char* fmt, va_list args) {
225 char *e = ci->_dyno_name + strlen(ci->_dyno_name);
226 char *m = ci->_dyno_name + ARRAY_SIZE(ci->_dyno_name) - 1;
227 os::vsnprintf(e, m - e, fmt, args);
228 assert(strlen(ci->_dyno_name) < (ARRAY_SIZE(ci->_dyno_name) - 1), "overflow");
229 }
230
231 // append a new component
232 ATTRIBUTE_PRINTF(3, 4)
233 RecordLocation(ciEnv* ci, const char* fmt, ...) {
234 end = ci->_dyno_name + strlen(ci->_dyno_name);
235 va_list args;
236 va_start(args, fmt);
237 push(ci, " ");
238 push_va(ci, fmt, args);
239 va_end(args);
240 }
241
242 // reset to previous state
243 ~RecordLocation() {
244 *end = '\0';
245 }
246 };
247
248 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler) {
249 ASSERT_IN_VM;
250
251 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
252 CompilerThread* current_thread = CompilerThread::current();
253 assert(current_thread->env() == nullptr, "must be");
254 current_thread->set_env(this);
255 assert(ciEnv::current() == this, "sanity");
256
257 _oop_recorder = nullptr;
258 _debug_info = nullptr;
259 _dependencies = nullptr;
260 _inc_decompile_count_on_failure = true;
261 _compilable = MethodCompilable_never;
262 _break_at_compile = false;
263 _compiler_data = nullptr;
264 #ifndef PRODUCT
265 assert(firstEnv, "must be first");
266 firstEnv = false;
267 #endif /* !PRODUCT */
268
269 _num_inlined_bytecodes = 0;
270 _task = nullptr;
271 _log = nullptr;
272
273 // Temporary buffer for creating symbols and such.
274 _name_buffer = nullptr;
275 _name_buffer_len = 0;
276
277 _arena = arena;
278 _factory = new (_arena) ciObjectFactory(_arena, 128);
279
280 // Preload commonly referenced system ciObjects.
281
282 // During VM initialization, these instances have not yet been created.
283 // Assertions ensure that these instances are not accessed before
284 // their initialization.
285
286 assert(Universe::is_fully_initialized(), "must be");
287
288 _NullPointerException_instance = nullptr;
289 _ArithmeticException_instance = nullptr;
290 _ArrayIndexOutOfBoundsException_instance = nullptr;
291 _ArrayStoreException_instance = nullptr;
292 _ClassCastException_instance = nullptr;
293 _the_null_string = nullptr;
294 _the_min_jint_string = nullptr;
295
296 _jvmti_redefinition_count = 0;
297 _jvmti_can_hotswap_or_post_breakpoint = false;
298 _jvmti_can_access_local_variables = false;
299 _jvmti_can_post_on_exceptions = false;
300 _jvmti_can_pop_frame = false;
301
302 _scc_clinit_barriers_entry = nullptr;
303
304 _dyno_klasses = nullptr;
305 _dyno_locs = nullptr;
306 }
307
308 ciEnv::~ciEnv() {
309 GUARDED_VM_ENTRY(
310 CompilerThread* current_thread = CompilerThread::current();
311 _factory->remove_symbols();
312 // Need safepoint to clear the env on the thread. RedefineClasses might
313 // be reading it.
314 current_thread->set_env(nullptr);
315 )
316 }
317
318 // ------------------------------------------------------------------
319 // Cache Jvmti state
320 bool ciEnv::cache_jvmti_state() {
321 VM_ENTRY_MARK;
322 // Get Jvmti capabilities under lock to get consistent values.
323 MutexLocker mu(JvmtiThreadState_lock);
324 _jvmti_redefinition_count = JvmtiExport::redefinition_count();
325 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
326 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
327 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
328 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
329 _jvmti_can_get_owned_monitor_info = JvmtiExport::can_get_owned_monitor_info();
330 _jvmti_can_walk_any_space = JvmtiExport::can_walk_any_space();
331 return _task != nullptr && _task->method()->is_old();
332 }
333
334 bool ciEnv::jvmti_state_changed() const {
335 // Some classes were redefined
336 if (_jvmti_redefinition_count != JvmtiExport::redefinition_count()) {
337 return true;
338 }
339
340 if (!_jvmti_can_access_local_variables &&
341 JvmtiExport::can_access_local_variables()) {
342 return true;
343 }
344 if (!_jvmti_can_hotswap_or_post_breakpoint &&
345 JvmtiExport::can_hotswap_or_post_breakpoint()) {
346 return true;
347 }
348 if (!_jvmti_can_post_on_exceptions &&
349 JvmtiExport::can_post_on_exceptions()) {
350 return true;
351 }
352 if (!_jvmti_can_pop_frame &&
353 JvmtiExport::can_pop_frame()) {
354 return true;
355 }
356 if (!_jvmti_can_get_owned_monitor_info &&
357 JvmtiExport::can_get_owned_monitor_info()) {
358 return true;
359 }
360 if (!_jvmti_can_walk_any_space &&
361 JvmtiExport::can_walk_any_space()) {
362 return true;
363 }
364
365 return false;
366 }
367
368 // ------------------------------------------------------------------
369 // Cache DTrace flags
370 void ciEnv::cache_dtrace_flags() {
371 // Need lock?
372 _dtrace_method_probes = DTraceMethodProbes;
373 _dtrace_alloc_probes = DTraceAllocProbes;
374 }
375
376 ciInstanceKlass* ciEnv::get_box_klass_for_primitive_type(BasicType type) {
377 switch (type) {
378 case T_BOOLEAN: return Boolean_klass();
379 case T_BYTE : return Byte_klass();
380 case T_CHAR : return Character_klass();
381 case T_SHORT : return Short_klass();
382 case T_INT : return Integer_klass();
383 case T_LONG : return Long_klass();
384 case T_FLOAT : return Float_klass();
385 case T_DOUBLE : return Double_klass();
386
387 default:
388 assert(false, "not a primitive: %s", type2name(type));
389 return nullptr;
390 }
391 }
392
393 ciInstance* ciEnv::ArrayIndexOutOfBoundsException_instance() {
394 if (_ArrayIndexOutOfBoundsException_instance == nullptr) {
395 VM_ENTRY_MARK;
396 _ArrayIndexOutOfBoundsException_instance = get_object(Universe::array_index_oob_exception_instance())->as_instance();
397 }
398 return _ArrayIndexOutOfBoundsException_instance;
399 }
400 ciInstance* ciEnv::ArrayStoreException_instance() {
401 if (_ArrayStoreException_instance == nullptr) {
402 VM_ENTRY_MARK;
403 _ArrayStoreException_instance = get_object(Universe::array_store_exception_instance())->as_instance();
404 }
405 return _ArrayStoreException_instance;
406 }
407 ciInstance* ciEnv::ClassCastException_instance() {
408 if (_ClassCastException_instance == nullptr) {
409 VM_ENTRY_MARK;
410 _ClassCastException_instance = get_object(Universe::class_cast_exception_instance())->as_instance();
411 }
412 return _ClassCastException_instance;
413 }
414
415 ciInstance* ciEnv::the_null_string() {
416 if (_the_null_string == nullptr) {
417 VM_ENTRY_MARK;
418 _the_null_string = get_object(Universe::the_null_string())->as_instance();
419 }
420 return _the_null_string;
421 }
422
423 ciInstance* ciEnv::the_min_jint_string() {
424 if (_the_min_jint_string == nullptr) {
425 VM_ENTRY_MARK;
426 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
427 }
428 return _the_min_jint_string;
429 }
430
431 // ------------------------------------------------------------------
432 // ciEnv::get_method_from_handle
433 ciMethod* ciEnv::get_method_from_handle(Method* method) {
434 VM_ENTRY_MARK;
435 return get_metadata(method)->as_method();
436 }
437
438 // ------------------------------------------------------------------
439 // ciEnv::check_klass_accessiblity
440 //
441 // Note: the logic of this method should mirror the logic of
442 // ConstantPool::verify_constant_pool_resolve.
443 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
444 Klass* resolved_klass) {
445 if (accessing_klass == nullptr || !accessing_klass->is_loaded()) {
446 return true;
447 }
448 if (accessing_klass->is_obj_array_klass()) {
449 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
450 }
451 if (!accessing_klass->is_instance_klass()) {
452 return true;
453 }
454
455 if (resolved_klass->is_objArray_klass()) {
456 // Find the element klass, if this is an array.
457 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
458 }
459 if (resolved_klass->is_instance_klass()) {
460 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
461 InstanceKlass::cast(resolved_klass),
462 true) == Reflection::ACCESS_OK);
463 }
464 return true;
465 }
466
467 // ------------------------------------------------------------------
468 // ciEnv::get_klass_by_name_impl
469 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
470 const constantPoolHandle& cpool,
471 ciSymbol* name,
472 bool require_local) {
473 ASSERT_IN_VM;
474 Thread* current = Thread::current();
475
476 // Now we need to check the SystemDictionary
477 Symbol* sym = name->get_symbol();
478 if (Signature::has_envelope(sym)) {
479 // This is a name from a signature. Strip off the trimmings.
480 // Call recursive to keep scope of strippedsym.
481 TempNewSymbol strippedsym = Signature::strip_envelope(sym);
482 ciSymbol* strippedname = get_symbol(strippedsym);
483 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
484 }
485
486 // Check for prior unloaded klass. The SystemDictionary's answers
487 // can vary over time but the compiler needs consistency.
488 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
489 if (unloaded_klass != nullptr) {
490 if (require_local) return nullptr;
491 return unloaded_klass;
492 }
493
494 Handle loader;
495 Handle domain;
496 if (accessing_klass != nullptr) {
497 loader = Handle(current, accessing_klass->loader());
498 domain = Handle(current, accessing_klass->protection_domain());
499 }
500
501 Klass* found_klass = require_local ?
502 SystemDictionary::find_instance_or_array_klass(current, sym, loader, domain) :
503 SystemDictionary::find_constrained_instance_or_array_klass(current, sym, loader);
504
505 // If we fail to find an array klass, look again for its element type.
506 // The element type may be available either locally or via constraints.
507 // In either case, if we can find the element type in the system dictionary,
508 // we must build an array type around it. The CI requires array klasses
509 // to be loaded if their element klasses are loaded, except when memory
510 // is exhausted.
511 if (Signature::is_array(sym) &&
512 (sym->char_at(1) == JVM_SIGNATURE_ARRAY || sym->char_at(1) == JVM_SIGNATURE_CLASS)) {
513 // We have an unloaded array.
514 // Build it on the fly if the element class exists.
515 SignatureStream ss(sym, false);
516 ss.skip_array_prefix(1);
517 // Get element ciKlass recursively.
518 ciKlass* elem_klass =
519 get_klass_by_name_impl(accessing_klass,
520 cpool,
521 get_symbol(ss.as_symbol()),
522 require_local);
523 if (elem_klass != nullptr && elem_klass->is_loaded()) {
524 // Now make an array for it
525 return ciObjArrayKlass::make_impl(elem_klass);
526 }
527 }
528
529 if (found_klass == nullptr && !cpool.is_null() && cpool->has_preresolution()) {
530 // Look inside the constant pool for pre-resolved class entries.
531 for (int i = cpool->length() - 1; i >= 1; i--) {
532 if (cpool->tag_at(i).is_klass()) {
533 Klass* kls = cpool->resolved_klass_at(i);
534 if (kls->name() == sym) {
535 found_klass = kls;
536 break;
537 }
538 }
539 }
540 }
541
542 if (found_klass != nullptr) {
543 // Found it. Build a CI handle.
544 return get_klass(found_klass);
545 }
546
547 if (require_local) return nullptr;
548
549 // Not yet loaded into the VM, or not governed by loader constraints.
550 // Make a CI representative for it.
551 return get_unloaded_klass(accessing_klass, name);
552 }
553
554 // ------------------------------------------------------------------
555 // ciEnv::get_klass_by_name
556 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
557 ciSymbol* klass_name,
558 bool require_local) {
559 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
560 constantPoolHandle(),
561 klass_name,
562 require_local);)
563 }
564
565 // ------------------------------------------------------------------
566 // ciEnv::get_klass_by_index_impl
567 //
568 // Implementation of get_klass_by_index.
569 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
570 int index,
571 bool& is_accessible,
572 ciInstanceKlass* accessor) {
573 Klass* klass = nullptr;
574 Symbol* klass_name = nullptr;
575
576 if (cpool->tag_at(index).is_symbol()) {
577 klass_name = cpool->symbol_at(index);
578 } else {
579 // Check if it's resolved if it's not a symbol constant pool entry.
580 klass = ConstantPool::klass_at_if_loaded(cpool, index);
581 // Try to look it up by name.
582 if (klass == nullptr) {
583 klass_name = cpool->klass_name_at(index);
584 }
585 }
586
587 if (klass == nullptr) {
588 // Not found in constant pool. Use the name to do the lookup.
589 ciKlass* k = get_klass_by_name_impl(accessor,
590 cpool,
591 get_symbol(klass_name),
592 false);
593 // Calculate accessibility the hard way.
594 if (!k->is_loaded()) {
595 is_accessible = false;
596 } else if (k->loader() != accessor->loader() &&
597 get_klass_by_name_impl(accessor, cpool, k->name(), true) == nullptr) {
598 // Loaded only remotely. Not linked yet.
599 is_accessible = false;
600 } else {
601 // Linked locally, and we must also check public/private, etc.
602 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
603 }
604 return k;
605 }
606
607 // Check for prior unloaded klass. The SystemDictionary's answers
608 // can vary over time but the compiler needs consistency.
609 ciSymbol* name = get_symbol(klass->name());
610 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
611 if (unloaded_klass != nullptr) {
612 is_accessible = false;
613 return unloaded_klass;
614 }
615
616 // It is known to be accessible, since it was found in the constant pool.
617 ciKlass* ciKlass = get_klass(klass);
618 is_accessible = true;
619 if (ReplayCompiles && ciKlass == _unloaded_ciinstance_klass) {
620 // Klass was unresolved at replay dump time and therefore not accessible.
621 is_accessible = false;
622 }
623 return ciKlass;
624 }
625
626 // ------------------------------------------------------------------
627 // ciEnv::get_klass_by_index
628 //
629 // Get a klass from the constant pool.
630 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
631 int index,
632 bool& is_accessible,
633 ciInstanceKlass* accessor) {
634 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
635 }
636
637 // ------------------------------------------------------------------
638 // ciEnv::unbox_primitive_value
639 //
640 // Unbox a primitive and return it as a ciConstant.
641 ciConstant ciEnv::unbox_primitive_value(ciObject* cibox, BasicType expected_bt) {
642 jvalue value;
643 BasicType bt = java_lang_boxing_object::get_value(cibox->get_oop(), &value);
644 if (bt != expected_bt && expected_bt != T_ILLEGAL) {
645 assert(false, "type mismatch: %s vs %s", type2name(expected_bt), cibox->klass()->name()->as_klass_external_name());
646 return ciConstant();
647 }
648 switch (bt) {
649 case T_BOOLEAN: return ciConstant(bt, value.z);
650 case T_BYTE: return ciConstant(bt, value.b);
651 case T_SHORT: return ciConstant(bt, value.s);
652 case T_CHAR: return ciConstant(bt, value.c);
653 case T_INT: return ciConstant(bt, value.i);
654 case T_LONG: return ciConstant(value.j);
655 case T_FLOAT: return ciConstant(value.f);
656 case T_DOUBLE: return ciConstant(value.d);
657
658 default:
659 assert(false, "not a primitive type: %s", type2name(bt));
660 return ciConstant();
661 }
662 }
663
664 // ------------------------------------------------------------------
665 // ciEnv::get_resolved_constant
666 //
667 ciConstant ciEnv::get_resolved_constant(const constantPoolHandle& cpool, int obj_index) {
668 assert(obj_index >= 0, "");
669 oop obj = cpool->resolved_reference_at(obj_index);
670 if (obj == nullptr) {
671 // Unresolved constant. It is resolved when the corresponding slot contains a non-null reference.
672 // Null constant is represented as a sentinel (non-null) value.
673 return ciConstant();
674 } else if (obj == Universe::the_null_sentinel()) {
675 return ciConstant(T_OBJECT, get_object(nullptr));
676 } else {
677 ciObject* ciobj = get_object(obj);
678 if (ciobj->is_array()) {
679 return ciConstant(T_ARRAY, ciobj);
680 } else {
681 int cp_index = cpool->object_to_cp_index(obj_index);
682 BasicType bt = cpool->basic_type_for_constant_at(cp_index);
683 if (is_java_primitive(bt)) {
684 assert(cpool->tag_at(cp_index).is_dynamic_constant(), "sanity");
685 return unbox_primitive_value(ciobj, bt);
686 } else {
687 assert(ciobj->is_instance(), "should be an instance");
688 return ciConstant(T_OBJECT, ciobj);
689 }
690 }
691 }
692 }
693
694 // ------------------------------------------------------------------
695 // ciEnv::get_constant_by_index_impl
696 //
697 // Implementation of get_constant_by_index().
698 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
699 int index, int obj_index,
700 ciInstanceKlass* accessor) {
701 if (obj_index >= 0) {
702 ciConstant con = get_resolved_constant(cpool, obj_index);
703 if (con.is_valid()) {
704 return con;
705 }
706 }
707 constantTag tag = cpool->tag_at(index);
708 if (tag.is_int()) {
709 return ciConstant(T_INT, (jint)cpool->int_at(index));
710 } else if (tag.is_long()) {
711 return ciConstant((jlong)cpool->long_at(index));
712 } else if (tag.is_float()) {
713 return ciConstant((jfloat)cpool->float_at(index));
714 } else if (tag.is_double()) {
715 return ciConstant((jdouble)cpool->double_at(index));
716 } else if (tag.is_string()) {
717 EXCEPTION_CONTEXT;
718 assert(obj_index >= 0, "should have an object index");
719 oop string = cpool->string_at(index, obj_index, THREAD);
720 if (HAS_PENDING_EXCEPTION) {
721 CLEAR_PENDING_EXCEPTION;
722 record_out_of_memory_failure();
723 return ciConstant();
724 }
725 ciInstance* constant = get_object(string)->as_instance();
726 return ciConstant(T_OBJECT, constant);
727 } else if (tag.is_unresolved_klass_in_error()) {
728 return ciConstant(T_OBJECT, get_unloaded_klass_mirror(nullptr));
729 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
730 bool will_link;
731 ciKlass* klass = get_klass_by_index_impl(cpool, index, will_link, accessor);
732 ciInstance* mirror = (will_link ? klass->java_mirror() : get_unloaded_klass_mirror(klass));
733 return ciConstant(T_OBJECT, mirror);
734 } else if (tag.is_method_type() || tag.is_method_type_in_error()) {
735 // must execute Java code to link this CP entry into cache[i].f1
736 assert(obj_index >= 0, "should have an object index");
737 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
738 ciObject* ciobj = get_unloaded_method_type_constant(signature);
739 return ciConstant(T_OBJECT, ciobj);
740 } else if (tag.is_method_handle() || tag.is_method_handle_in_error()) {
741 // must execute Java code to link this CP entry into cache[i].f1
742 assert(obj_index >= 0, "should have an object index");
743 bool ignore_will_link;
744 int ref_kind = cpool->method_handle_ref_kind_at(index);
745 int callee_index = cpool->method_handle_klass_index_at(index);
746 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
747 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
748 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
749 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
750 return ciConstant(T_OBJECT, ciobj);
751 } else if (tag.is_dynamic_constant() || tag.is_dynamic_constant_in_error()) {
752 assert(obj_index >= 0, "should have an object index");
753 return ciConstant(T_OBJECT, unloaded_ciinstance()); // unresolved dynamic constant
754 } else {
755 assert(false, "unknown tag: %d (%s)", tag.value(), tag.internal_name());
756 return ciConstant();
757 }
758 }
759
760 // ------------------------------------------------------------------
761 // ciEnv::get_constant_by_index
762 //
763 // Pull a constant out of the constant pool. How appropriate.
764 //
765 // Implementation note: this query is currently in no way cached.
766 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
767 int pool_index, int cache_index,
768 ciInstanceKlass* accessor) {
769 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
770 }
771
772 // ------------------------------------------------------------------
773 // ciEnv::get_field_by_index_impl
774 //
775 // Implementation of get_field_by_index.
776 //
777 // Implementation note: the results of field lookups are cached
778 // in the accessor klass.
779 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
780 int index, Bytecodes::Code bc) {
781 ciConstantPoolCache* cache = accessor->field_cache();
782 if (cache == nullptr) {
783 ciField* field = new (arena()) ciField(accessor, index, bc);
784 return field;
785 } else {
786 ciField* field = (ciField*)cache->get(index);
787 if (field == nullptr) {
788 field = new (arena()) ciField(accessor, index, bc);
789 cache->insert(index, field);
790 }
791 return field;
792 }
793 }
794
795 // ------------------------------------------------------------------
796 // ciEnv::get_field_by_index
797 //
798 // Get a field by index from a klass's constant pool.
799 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
800 int index, Bytecodes::Code bc) {
801 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index, bc);)
802 }
803
804 // ------------------------------------------------------------------
805 // ciEnv::lookup_method
806 //
807 // Perform an appropriate method lookup based on accessor, holder,
808 // name, signature, and bytecode.
809 Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
810 ciKlass* holder,
811 Symbol* name,
812 Symbol* sig,
813 Bytecodes::Code bc,
814 constantTag tag) {
815 InstanceKlass* accessor_klass = accessor->get_instanceKlass();
816 Klass* holder_klass = holder->get_Klass();
817
818 // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
819 assert(check_klass_accessibility(accessor, holder_klass), "holder not accessible");
820
821 LinkInfo link_info(holder_klass, name, sig, accessor_klass,
822 LinkInfo::AccessCheck::required,
823 LinkInfo::LoaderConstraintCheck::required,
824 tag);
825 switch (bc) {
826 case Bytecodes::_invokestatic:
827 return LinkResolver::resolve_static_call_or_null(link_info);
828 case Bytecodes::_invokespecial:
829 return LinkResolver::resolve_special_call_or_null(link_info);
830 case Bytecodes::_invokeinterface:
831 return LinkResolver::linktime_resolve_interface_method_or_null(link_info);
832 case Bytecodes::_invokevirtual:
833 return LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
834 default:
835 fatal("Unhandled bytecode: %s", Bytecodes::name(bc));
836 return nullptr; // silence compiler warnings
837 }
838 }
839
840
841 // ------------------------------------------------------------------
842 // ciEnv::get_method_by_index_impl
843 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
844 int index, Bytecodes::Code bc,
845 ciInstanceKlass* accessor) {
846 assert(cpool.not_null(), "need constant pool");
847 assert(accessor != nullptr, "need origin of access");
848 if (bc == Bytecodes::_invokedynamic) {
849 // FIXME: code generation could allow for null (unlinked) call site
850 // The call site could be made patchable as follows:
851 // Load the appendix argument from the constant pool.
852 // Test the appendix argument and jump to a known deopt routine if it is null.
853 // Jump through a patchable call site, which is initially a deopt routine.
854 // Patch the call site to the nmethod entry point of the static compiled lambda form.
855 // As with other two-component call sites, both values must be independently verified.
856 assert(index < cpool->cache()->resolved_indy_entries_length(), "impossible");
857 Method* adapter = cpool->resolved_indy_entry_at(index)->method();
858 // Resolved if the adapter is non null.
859 if (adapter != nullptr) {
860 return get_method(adapter);
861 }
862
863 // Fake a method that is equivalent to a declared method.
864 ciInstanceKlass* holder = get_instance_klass(vmClasses::MethodHandle_klass());
865 ciSymbol* name = ciSymbols::invokeBasic_name();
866 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index, bc));
867 return get_unloaded_method(holder, name, signature, accessor);
868 } else {
869 const int holder_index = cpool->klass_ref_index_at(index, bc);
870 bool holder_is_accessible;
871 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
872
873 // Get the method's name and signature.
874 Symbol* name_sym = cpool->name_ref_at(index, bc);
875 Symbol* sig_sym = cpool->signature_ref_at(index, bc);
876
877 if (cpool->has_preresolution()
878 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
879 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
880 // Short-circuit lookups for JSR 292-related call sites.
881 // That is, do not rely only on name-based lookups, because they may fail
882 // if the names are not resolvable in the boot class loader (7056328).
883 switch (bc) {
884 case Bytecodes::_invokevirtual:
885 case Bytecodes::_invokeinterface:
886 case Bytecodes::_invokespecial:
887 case Bytecodes::_invokestatic:
888 {
889 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
890 if (m != nullptr) {
891 return get_method(m);
892 }
893 }
894 break;
895 default:
896 break;
897 }
898 }
899
900 if (holder_is_accessible) { // Our declared holder is loaded.
901 constantTag tag = cpool->tag_ref_at(index, bc);
902 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
903 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
904 if (m != nullptr) {
905 ciInstanceKlass* cik = get_instance_klass(m->method_holder());
906 if ((bc == Bytecodes::_invokestatic && cik->is_not_initialized()) || !cik->is_loaded()) {
907 m = nullptr;
908 }
909 }
910 if (m != nullptr && ReplayCompiles && !ciReplay::is_loaded(m)) {
911 m = nullptr;
912 }
913 if (m != nullptr) {
914 // We found the method.
915 return get_method(m);
916 }
917 }
918
919 // Either the declared holder was not loaded, or the method could
920 // not be found. Create a dummy ciMethod to represent the failed
921 // lookup.
922 ciSymbol* name = get_symbol(name_sym);
923 ciSymbol* signature = get_symbol(sig_sym);
924 return get_unloaded_method(holder, name, signature, accessor);
925 }
926 }
927
928
929 // ------------------------------------------------------------------
930 // ciEnv::get_instance_klass_for_declared_method_holder
931 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
932 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
933 // instead of a ciInstanceKlass. For that case simply pretend that the
934 // declared holder is Object.clone since that's where the call will bottom out.
935 // A more correct fix would trickle out through many interfaces in CI,
936 // requiring ciInstanceKlass* to become ciKlass* and many more places would
937 // require checks to make sure the expected type was found. Given that this
938 // only occurs for clone() the more extensive fix seems like overkill so
939 // instead we simply smear the array type into Object.
940 guarantee(method_holder != nullptr, "no method holder");
941 if (method_holder->is_instance_klass()) {
942 return method_holder->as_instance_klass();
943 } else if (method_holder->is_array_klass()) {
944 return current()->Object_klass();
945 } else {
946 ShouldNotReachHere();
947 }
948 return nullptr;
949 }
950
951
952 // ------------------------------------------------------------------
953 // ciEnv::get_method_by_index
954 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
955 int index, Bytecodes::Code bc,
956 ciInstanceKlass* accessor) {
957 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
958 }
959
960
961 // ------------------------------------------------------------------
962 // ciEnv::name_buffer
963 char *ciEnv::name_buffer(int req_len) {
964 if (_name_buffer_len < req_len) {
965 if (_name_buffer == nullptr) {
966 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
967 _name_buffer_len = req_len;
968 } else {
969 _name_buffer =
970 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
971 _name_buffer_len = req_len;
972 }
973 }
974 return _name_buffer;
975 }
976
977 // ------------------------------------------------------------------
978 // ciEnv::is_in_vm
979 bool ciEnv::is_in_vm() {
980 return JavaThread::current()->thread_state() == _thread_in_vm;
981 }
982
983 // ------------------------------------------------------------------
984 // ciEnv::validate_compile_task_dependencies
985 //
986 // Check for changes during compilation (e.g. class loads, evolution,
987 // breakpoints, call site invalidation).
988 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
989 assert(!failing(), "should not call this when failing");
990
991 Dependencies::DepType result = dependencies()->validate_dependencies(_task);
992 if (result != Dependencies::end_marker) {
993 if (result == Dependencies::call_site_target_value) {
994 _inc_decompile_count_on_failure = false;
995 record_failure("call site target change");
996 } else if (Dependencies::is_klass_type(result)) {
997 record_failure("concurrent class loading");
998 } else {
999 record_failure("invalid non-klass dependency");
1000 }
1001 }
1002 }
1003
1004 // ------------------------------------------------------------------
1005 // ciEnv::register_method
1006 void ciEnv::register_method(ciMethod* target,
1007 int entry_bci,
1008 CodeOffsets* offsets,
1009 int orig_pc_offset,
1010 CodeBuffer* code_buffer,
1011 int frame_words,
1012 OopMapSet* oop_map_set,
1013 ExceptionHandlerTable* handler_table,
1014 ImplicitExceptionTable* inc_table,
1015 AbstractCompiler* compiler,
1016 bool has_clinit_barriers,
1017 bool for_preload,
1018 bool has_unsafe_access,
1019 bool has_wide_vectors,
1020 bool has_monitors,
1021 int immediate_oops_patched,
1022 bool install_code,
1023 RTMState rtm_state,
1024 SCCEntry* scc_entry) {
1025 VM_ENTRY_MARK;
1026 nmethod* nm = nullptr;
1027 {
1028 methodHandle method(THREAD, target->get_Method());
1029 bool preload = task()->preload(); // Code is preloaded before Java method execution
1030
1031 // We require method counters to store some method state (max compilation levels) required by the compilation policy.
1032 if (!preload && method->get_method_counters(THREAD) == nullptr) {
1033 record_failure("can't create method counters");
1034 // All buffers in the CodeBuffer are allocated in the CodeCache.
1035 // If the code buffer is created on each compile attempt
1036 // as in C2, then it must be freed.
1037 // But keep shared code.
1038 code_buffer->free_blob();
1039 return;
1040 }
1041
1042 // Check if memory should be freed before allocation
1043 CodeCache::gc_on_allocation();
1044
1045 // To prevent compile queue updates.
1046 MutexLocker locker(THREAD, MethodCompileQueue_lock);
1047
1048 // Prevent InstanceKlass::add_to_hierarchy from running
1049 // and invalidating our dependencies until we install this method.
1050 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
1051 MutexLocker ml(Compile_lock);
1052 NoSafepointVerifier nsv;
1053
1054 if (scc_entry != nullptr && scc_entry->not_entrant()) {
1055 // This shared code was marked invalid while it was loaded
1056 code_buffer->free_blob();
1057 return;
1058 }
1059
1060 // Change in Jvmti state may invalidate compilation.
1061 if (!failing() && jvmti_state_changed()) {
1062 record_failure("Jvmti state change invalidated dependencies");
1063 }
1064
1065 // Change in DTrace flags may invalidate compilation.
1066 if (!failing() &&
1067 ( (!dtrace_method_probes() && DTraceMethodProbes) ||
1068 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
1069 record_failure("DTrace flags change invalidated dependencies");
1070 }
1071
1072 if (!preload && !failing() && target->needs_clinit_barrier() &&
1073 target->holder()->is_in_error_state()) {
1074 record_failure("method holder is in error state");
1075 }
1076
1077 if (!failing() && (scc_entry == nullptr)) {
1078 if (log() != nullptr) {
1079 // Log the dependencies which this compilation declares.
1080 dependencies()->log_all_dependencies();
1081 }
1082
1083 // Encode the dependencies now, so we can check them right away.
1084 dependencies()->encode_content_bytes();
1085 }
1086 // Check for {class loads, evolution, breakpoints, ...} during compilation
1087 if (!failing() && install_code) {
1088 // Check for {class loads, evolution, breakpoints, ...} during compilation
1089 validate_compile_task_dependencies(target);
1090 if (failing() && preload) {
1091 ResourceMark rm;
1092 char *method_name = method->name_and_sig_as_C_string();
1093 log_warning(scc)("preload code for '%s' failed dependency check", method_name);
1094 }
1095 }
1096 #if INCLUDE_RTM_OPT
1097 if (!failing() && (rtm_state != NoRTM) &&
1098 (method()->method_data() != nullptr) &&
1099 (method()->method_data()->rtm_state() != rtm_state)) {
1100 // Preemptive decompile if rtm state was changed.
1101 record_failure("RTM state change invalidated rtm code");
1102 }
1103 #endif
1104
1105 if (failing()) {
1106 // While not a true deoptimization, it is a preemptive decompile.
1107 MethodData* mdo = method()->method_data();
1108 if (mdo != nullptr && _inc_decompile_count_on_failure) {
1109 mdo->inc_decompile_count();
1110 }
1111
1112 // All buffers in the CodeBuffer are allocated in the CodeCache.
1113 // If the code buffer is created on each compile attempt
1114 // as in C2, then it must be freed.
1115 code_buffer->free_blob();
1116 return;
1117 }
1118
1119 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1120 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1121
1122 if (rtm_state == NoRTM && scc_entry == nullptr) {
1123 scc_entry = SCCache::store_nmethod(method,
1124 compile_id(),
1125 entry_bci,
1126 offsets,
1127 orig_pc_offset,
1128 debug_info(), dependencies(), code_buffer,
1129 frame_words, oop_map_set,
1130 handler_table, inc_table,
1131 compiler,
1132 CompLevel(task()->comp_level()),
1133 has_clinit_barriers,
1134 for_preload,
1135 has_unsafe_access,
1136 has_wide_vectors,
1137 has_monitors);
1138 if (scc_entry != nullptr) {
1139 scc_entry->set_inlined_bytecodes(num_inlined_bytecodes());
1140 if (has_clinit_barriers) {
1141 set_scc_clinit_barriers_entry(scc_entry); // Record it
1142 // Build second version of code without class initialization barriers
1143 code_buffer->free_blob();
1144 return;
1145 } else if (!for_preload) {
1146 SCCEntry* previous_entry = scc_clinit_barriers_entry();
1147 scc_entry->set_next(previous_entry); // Link it for case of deoptimization
1148 }
1149 }
1150 }
1151 if (install_code) {
1152 nm = nmethod::new_nmethod(method,
1153 compile_id(),
1154 entry_bci,
1155 offsets,
1156 orig_pc_offset,
1157 debug_info(), dependencies(), code_buffer,
1158 frame_words, oop_map_set,
1159 handler_table, inc_table,
1160 compiler, CompLevel(task()->comp_level()),
1161 scc_entry);
1162 }
1163 // Free codeBlobs
1164 code_buffer->free_blob();
1165
1166 if (nm != nullptr) {
1167 nm->set_has_unsafe_access(has_unsafe_access);
1168 nm->set_has_wide_vectors(has_wide_vectors);
1169 nm->set_has_monitors(has_monitors);
1170 nm->set_preloaded(preload);
1171 nm->set_has_clinit_barriers(has_clinit_barriers);
1172 assert(!method->is_synchronized() || nm->has_monitors(), "");
1173 #if INCLUDE_RTM_OPT
1174 nm->set_rtm_state(rtm_state);
1175 #endif
1176
1177 if (entry_bci == InvocationEntryBci) {
1178 if (TieredCompilation) {
1179 // If there is an old version we're done with it
1180 nmethod* old = method->code();
1181 if (TraceMethodReplacement && old != nullptr) {
1182 ResourceMark rm;
1183 char *method_name = method->name_and_sig_as_C_string();
1184 tty->print_cr("Replacing method %s", method_name);
1185 }
1186 if (old != nullptr) {
1187 old->make_not_used();
1188 }
1189 }
1190
1191 LogTarget(Info, nmethod, install) lt;
1192 if (lt.is_enabled()) {
1193 ResourceMark rm;
1194 char *method_name = method->name_and_sig_as_C_string();
1195 lt.print("Installing method (L%d) %s id=%d scc=%s%s%u",
1196 task()->comp_level(), method_name, compile_id(),
1197 task()->is_scc() ? "A" : "", preload ? "P" : "",
1198 (scc_entry != nullptr ? scc_entry->offset() : 0));
1199 }
1200 // Allow the code to be executed
1201 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
1202 if (nm->make_in_use()) {
1203 #ifdef ASSERT
1204 BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
1205 if (bs_nm != nullptr && bs_nm->supports_entry_barrier(nm)) {
1206 if (!bs_nm->is_armed(nm)) {
1207 log_info(init)("nmethod %d %d not armed", nm->compile_id(), nm->comp_level());
1208 }
1209 }
1210 #endif // ASSERT
1211 if (preload) {
1212 method->set_preload_code(nm);
1213 }
1214 if (!preload || target->holder()->is_linked()) {
1215 method->set_code(method, nm);
1216 }
1217 }
1218 } else {
1219 LogTarget(Info, nmethod, install) lt;
1220 if (lt.is_enabled()) {
1221 ResourceMark rm;
1222 char *method_name = method->name_and_sig_as_C_string();
1223 lt.print("Installing osr method (L%d) %s @ %d id=%u scc=%s%u",
1224 task()->comp_level(), method_name, entry_bci, compile_id(),
1225 task()->is_scc() ? "A" : "",
1226 (scc_entry != nullptr ? scc_entry->offset() : 0));
1227 }
1228 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
1229 if (nm->make_in_use()) {
1230 method->method_holder()->add_osr_nmethod(nm);
1231 }
1232 }
1233 }
1234 }
1235
1236 NoSafepointVerifier nsv;
1237 if (nm != nullptr) {
1238 // Compilation succeeded, post what we know about it
1239 nm->post_compiled_method(task());
1240 task()->set_num_inlined_bytecodes(num_inlined_bytecodes());
1241 } else if (install_code) {
1242 // The CodeCache is full.
1243 record_failure("code cache is full");
1244 } else {
1245 task()->set_num_inlined_bytecodes(num_inlined_bytecodes());
1246 }
1247
1248 // safepoints are allowed again
1249 }
1250
1251 // ------------------------------------------------------------------
1252 // ciEnv::find_system_klass
1253 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1254 VM_ENTRY_MARK;
1255 return get_klass_by_name_impl(nullptr, constantPoolHandle(), klass_name, false);
1256 }
1257
1258 // ------------------------------------------------------------------
1259 // ciEnv::comp_level
1260 int ciEnv::comp_level() {
1261 if (task() == nullptr) return CompilationPolicy::highest_compile_level();
1262 return task()->comp_level();
1263 }
1264
1265 // ------------------------------------------------------------------
1266 // ciEnv::compile_id
1267 int ciEnv::compile_id() {
1268 if (task() == nullptr) return 0;
1269 return task()->compile_id();
1270 }
1271
1272 // ------------------------------------------------------------------
1273 // ciEnv::notice_inlined_method()
1274 void ciEnv::notice_inlined_method(ciMethod* method) {
1275 _num_inlined_bytecodes += method->code_size_for_inlining();
1276 CompileTrainingData* tdata = task()->training_data();
1277 if (tdata != nullptr) {
1278 GUARDED_VM_ENTRY({
1279 methodHandle mh(Thread::current(), method->get_Method());
1280 tdata->notice_inlined_method(task(), mh);
1281 });
1282 }
1283 }
1284
1285 // ------------------------------------------------------------------
1286 // ciEnv::num_inlined_bytecodes()
1287 int ciEnv::num_inlined_bytecodes() const {
1288 return _num_inlined_bytecodes;
1289 }
1290
1291 // ------------------------------------------------------------------
1292 // ciEnv::record_failure()
1293 void ciEnv::record_failure(const char* reason) {
1294 if (_failure_reason.get() == nullptr) {
1295 // Record the first failure reason.
1296 _failure_reason.set(reason);
1297 }
1298 }
1299
1300 void ciEnv::report_failure(const char* reason) {
1301 EventCompilationFailure event;
1302 if (event.should_commit()) {
1303 CompilerEvent::CompilationFailureEvent::post(event, compile_id(), reason);
1304 }
1305 }
1306
1307 // ------------------------------------------------------------------
1308 // ciEnv::record_method_not_compilable()
1309 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1310 int new_compilable =
1311 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1312
1313 // Only note transitions to a worse state
1314 if (new_compilable > _compilable) {
1315 if (log() != nullptr) {
1316 if (all_tiers) {
1317 log()->elem("method_not_compilable");
1318 } else {
1319 log()->elem("method_not_compilable_at_tier level='%d'",
1320 current()->task()->comp_level());
1321 }
1322 }
1323 _compilable = new_compilable;
1324
1325 // Reset failure reason; this one is more important.
1326 _failure_reason.clear();
1327 record_failure(reason);
1328 }
1329 }
1330
1331 // ------------------------------------------------------------------
1332 // ciEnv::record_out_of_memory_failure()
1333 void ciEnv::record_out_of_memory_failure() {
1334 // If memory is low, we stop compiling methods.
1335 record_method_not_compilable("out of memory");
1336 }
1337
1338 ciInstance* ciEnv::unloaded_ciinstance() {
1339 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1340 }
1341
1342 // ------------------------------------------------------------------
1343 // Replay support
1344
1345
1346 // Lookup location descriptor for the class, if any.
1347 // Returns false if not found.
1348 bool ciEnv::dyno_loc(const InstanceKlass* ik, const char *&loc) const {
1349 bool found = false;
1350 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1351 if (!found) {
1352 return false;
1353 }
1354 loc = _dyno_locs->at(pos);
1355 return found;
1356 }
1357
1358 // Associate the current location descriptor with the given class and record for later lookup.
1359 void ciEnv::set_dyno_loc(const InstanceKlass* ik) {
1360 const char *loc = os::strdup(_dyno_name);
1361 bool found = false;
1362 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1363 if (found) {
1364 _dyno_locs->at_put(pos, loc);
1365 } else {
1366 _dyno_klasses->insert_before(pos, ik);
1367 _dyno_locs->insert_before(pos, loc);
1368 }
1369 }
1370
1371 // Associate the current location descriptor with the given class and record for later lookup.
1372 // If it turns out that there are multiple locations for the given class, that conflict should
1373 // be handled here. Currently we choose the first location found.
1374 void ciEnv::record_best_dyno_loc(const InstanceKlass* ik) {
1375 if (!ik->is_hidden()) {
1376 return;
1377 }
1378 const char *loc0;
1379 if (!dyno_loc(ik, loc0)) {
1380 set_dyno_loc(ik);
1381 }
1382 }
1383
1384 // Look up the location descriptor for the given class and print it to the output stream.
1385 bool ciEnv::print_dyno_loc(outputStream* out, const InstanceKlass* ik) const {
1386 const char *loc;
1387 if (dyno_loc(ik, loc)) {
1388 out->print("%s", loc);
1389 return true;
1390 } else {
1391 return false;
1392 }
1393 }
1394
1395 // Look up the location descriptor for the given class and return it as a string.
1396 // Returns null if no location is found.
1397 const char *ciEnv::dyno_name(const InstanceKlass* ik) const {
1398 if (ik->is_hidden()) {
1399 stringStream ss;
1400 if (print_dyno_loc(&ss, ik)) {
1401 ss.print(" ;"); // add terminator
1402 const char* call_site = ss.as_string();
1403 return call_site;
1404 }
1405 }
1406 return nullptr;
1407 }
1408
1409 // Look up the location descriptor for the given class and return it as a string.
1410 // Returns the class name as a fallback if no location is found.
1411 const char *ciEnv::replay_name(ciKlass* k) const {
1412 if (k->is_instance_klass()) {
1413 return replay_name(k->as_instance_klass()->get_instanceKlass());
1414 }
1415 return k->name()->as_quoted_ascii();
1416 }
1417
1418 // Look up the location descriptor for the given class and return it as a string.
1419 // Returns the class name as a fallback if no location is found.
1420 const char *ciEnv::replay_name(const InstanceKlass* ik) const {
1421 const char* name = dyno_name(ik);
1422 if (name != nullptr) {
1423 return name;
1424 }
1425 return ik->name()->as_quoted_ascii();
1426 }
1427
1428 // Process a java.lang.invoke.MemberName object and record any dynamic locations.
1429 void ciEnv::record_member(Thread* thread, oop member) {
1430 assert(java_lang_invoke_MemberName::is_instance(member), "!");
1431 // Check MemberName.clazz field
1432 oop clazz = java_lang_invoke_MemberName::clazz(member);
1433 if (clazz->klass()->is_instance_klass()) {
1434 RecordLocation fp(this, "clazz");
1435 InstanceKlass* ik = InstanceKlass::cast(clazz->klass());
1436 record_best_dyno_loc(ik);
1437 }
1438 // Check MemberName.method.vmtarget field
1439 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(member);
1440 if (vmtarget != nullptr) {
1441 RecordLocation fp2(this, "<vmtarget>");
1442 InstanceKlass* ik = vmtarget->method_holder();
1443 record_best_dyno_loc(ik);
1444 }
1445 }
1446
1447 // Read an object field. Lookup is done by name only.
1448 static inline oop obj_field(oop obj, const char* name) {
1449 return ciReplay::obj_field(obj, name);
1450 }
1451
1452 // Process a java.lang.invoke.LambdaForm object and record any dynamic locations.
1453 void ciEnv::record_lambdaform(Thread* thread, oop form) {
1454 assert(java_lang_invoke_LambdaForm::is_instance(form), "!");
1455
1456 {
1457 // Check LambdaForm.vmentry field
1458 oop member = java_lang_invoke_LambdaForm::vmentry(form);
1459 RecordLocation fp0(this, "vmentry");
1460 record_member(thread, member);
1461 }
1462
1463 // Check LambdaForm.names array
1464 objArrayOop names = (objArrayOop)obj_field(form, "names");
1465 if (names != nullptr) {
1466 RecordLocation lp0(this, "names");
1467 int len = names->length();
1468 for (int i = 0; i < len; ++i) {
1469 oop name = names->obj_at(i);
1470 RecordLocation lp1(this, "%d", i);
1471 // Check LambdaForm.names[i].function field
1472 RecordLocation lp2(this, "function");
1473 oop function = obj_field(name, "function");
1474 if (function != nullptr) {
1475 // Check LambdaForm.names[i].function.member field
1476 oop member = obj_field(function, "member");
1477 if (member != nullptr) {
1478 RecordLocation lp3(this, "member");
1479 record_member(thread, member);
1480 }
1481 // Check LambdaForm.names[i].function.resolvedHandle field
1482 oop mh = obj_field(function, "resolvedHandle");
1483 if (mh != nullptr) {
1484 RecordLocation lp3(this, "resolvedHandle");
1485 record_mh(thread, mh);
1486 }
1487 // Check LambdaForm.names[i].function.invoker field
1488 oop invoker = obj_field(function, "invoker");
1489 if (invoker != nullptr) {
1490 RecordLocation lp3(this, "invoker");
1491 record_mh(thread, invoker);
1492 }
1493 }
1494 }
1495 }
1496 }
1497
1498 // Process a java.lang.invoke.MethodHandle object and record any dynamic locations.
1499 void ciEnv::record_mh(Thread* thread, oop mh) {
1500 {
1501 // Check MethodHandle.form field
1502 oop form = java_lang_invoke_MethodHandle::form(mh);
1503 RecordLocation fp(this, "form");
1504 record_lambdaform(thread, form);
1505 }
1506 // Check DirectMethodHandle.member field
1507 if (java_lang_invoke_DirectMethodHandle::is_instance(mh)) {
1508 oop member = java_lang_invoke_DirectMethodHandle::member(mh);
1509 RecordLocation fp(this, "member");
1510 record_member(thread, member);
1511 } else {
1512 // Check <MethodHandle subclass>.argL<n> fields
1513 // Probably BoundMethodHandle.Species_L*, but we only care if the field exists
1514 char arg_name[] = "argLXX";
1515 int max_arg = 99;
1516 for (int index = 0; index <= max_arg; ++index) {
1517 jio_snprintf(arg_name, sizeof (arg_name), "argL%d", index);
1518 oop arg = obj_field(mh, arg_name);
1519 if (arg != nullptr) {
1520 RecordLocation fp(this, "%s", arg_name);
1521 if (arg->klass()->is_instance_klass()) {
1522 InstanceKlass* ik2 = InstanceKlass::cast(arg->klass());
1523 record_best_dyno_loc(ik2);
1524 record_call_site_obj(thread, arg);
1525 }
1526 } else {
1527 break;
1528 }
1529 }
1530 }
1531 }
1532
1533 // Process an object found at an invokedynamic/invokehandle call site and record any dynamic locations.
1534 // Types currently supported are MethodHandle and CallSite.
1535 // The object is typically the "appendix" object, or Bootstrap Method (BSM) object.
1536 void ciEnv::record_call_site_obj(Thread* thread, oop obj)
1537 {
1538 if (obj != nullptr) {
1539 if (java_lang_invoke_MethodHandle::is_instance(obj)) {
1540 record_mh(thread, obj);
1541 } else if (java_lang_invoke_ConstantCallSite::is_instance(obj)) {
1542 oop target = java_lang_invoke_CallSite::target(obj);
1543 if (target->klass()->is_instance_klass()) {
1544 RecordLocation fp(this, "target");
1545 InstanceKlass* ik = InstanceKlass::cast(target->klass());
1546 record_best_dyno_loc(ik);
1547 }
1548 }
1549 }
1550 }
1551
1552 // Process an adapter Method* found at an invokedynamic/invokehandle call site and record any dynamic locations.
1553 void ciEnv::record_call_site_method(Thread* thread, Method* adapter) {
1554 InstanceKlass* holder = adapter->method_holder();
1555 if (!holder->is_hidden()) {
1556 return;
1557 }
1558 RecordLocation fp(this, "<adapter>");
1559 record_best_dyno_loc(holder);
1560 }
1561
1562 // Process an invokedynamic call site and record any dynamic locations.
1563 void ciEnv::process_invokedynamic(const constantPoolHandle &cp, int indy_index, JavaThread* thread) {
1564 ResolvedIndyEntry* indy_info = cp->resolved_indy_entry_at(indy_index);
1565 if (indy_info->method() != nullptr) {
1566 // process the adapter
1567 Method* adapter = indy_info->method();
1568 record_call_site_method(thread, adapter);
1569 // process the appendix
1570 oop appendix = cp->resolved_reference_from_indy(indy_index);
1571 {
1572 RecordLocation fp(this, "<appendix>");
1573 record_call_site_obj(thread, appendix);
1574 }
1575 // process the BSM
1576 int pool_index = indy_info->constant_pool_index();
1577 BootstrapInfo bootstrap_specifier(cp, pool_index, indy_index);
1578 oop bsm = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), thread);
1579 {
1580 RecordLocation fp(this, "<bsm>");
1581 record_call_site_obj(thread, bsm);
1582 }
1583 }
1584 }
1585
1586 // Process an invokehandle call site and record any dynamic locations.
1587 void ciEnv::process_invokehandle(const constantPoolHandle &cp, int index, JavaThread* thread) {
1588 const int holder_index = cp->klass_ref_index_at(index, Bytecodes::_invokehandle);
1589 if (!cp->tag_at(holder_index).is_klass()) {
1590 return; // not resolved
1591 }
1592 Klass* holder = ConstantPool::klass_at_if_loaded(cp, holder_index);
1593 Symbol* name = cp->name_ref_at(index, Bytecodes::_invokehandle);
1594 if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
1595 ResolvedMethodEntry* method_entry = cp->resolved_method_entry_at(index);
1596 if (method_entry->is_resolved(Bytecodes::_invokehandle)) {
1597 // process the adapter
1598 Method* adapter = method_entry->method();
1599 oop appendix = cp->cache()->appendix_if_resolved(method_entry);
1600 record_call_site_method(thread, adapter);
1601 // process the appendix
1602 {
1603 RecordLocation fp(this, "<appendix>");
1604 record_call_site_obj(thread, appendix);
1605 }
1606 }
1607 }
1608 }
1609
1610 // Search the class hierarchy for dynamic classes reachable through dynamic call sites or
1611 // constant pool entries and record for future lookup.
1612 void ciEnv::find_dynamic_call_sites() {
1613 _dyno_klasses = new (arena()) GrowableArray<const InstanceKlass*>(arena(), 100, 0, nullptr);
1614 _dyno_locs = new (arena()) GrowableArray<const char *>(arena(), 100, 0, nullptr);
1615
1616 // Iterate over the class hierarchy
1617 for (ClassHierarchyIterator iter(vmClasses::Object_klass()); !iter.done(); iter.next()) {
1618 Klass* sub = iter.klass();
1619 if (sub->is_instance_klass()) {
1620 InstanceKlass *isub = InstanceKlass::cast(sub);
1621 InstanceKlass* ik = isub;
1622 if (!ik->is_linked()) {
1623 continue;
1624 }
1625 if (ik->is_hidden()) {
1626 continue;
1627 }
1628 JavaThread* thread = JavaThread::current();
1629 const constantPoolHandle pool(thread, ik->constants());
1630
1631 // Look for invokedynamic/invokehandle call sites
1632 for (int i = 0; i < ik->methods()->length(); ++i) {
1633 Method* m = ik->methods()->at(i);
1634
1635 BytecodeStream bcs(methodHandle(thread, m));
1636 while (!bcs.is_last_bytecode()) {
1637 Bytecodes::Code opcode = bcs.next();
1638 opcode = bcs.raw_code();
1639 switch (opcode) {
1640 case Bytecodes::_invokedynamic:
1641 case Bytecodes::_invokehandle: {
1642 RecordLocation fp(this, "@bci %s %s %s %d",
1643 ik->name()->as_quoted_ascii(),
1644 m->name()->as_quoted_ascii(), m->signature()->as_quoted_ascii(),
1645 bcs.bci());
1646 if (opcode == Bytecodes::_invokedynamic) {
1647 int index = bcs.get_index_u4();
1648 process_invokedynamic(pool, index, thread);
1649 } else {
1650 assert(opcode == Bytecodes::_invokehandle, "new switch label added?");
1651 int cp_cache_index = bcs.get_index_u2();
1652 process_invokehandle(pool, cp_cache_index, thread);
1653 }
1654 break;
1655 }
1656 default:
1657 break;
1658 }
1659 }
1660 }
1661
1662 // Look for MethodHandle constant pool entries
1663 RecordLocation fp(this, "@cpi %s", ik->name()->as_quoted_ascii());
1664 int len = pool->length();
1665 for (int i = 0; i < len; ++i) {
1666 if (pool->tag_at(i).is_method_handle()) {
1667 bool found_it;
1668 oop mh = pool->find_cached_constant_at(i, found_it, thread);
1669 if (mh != nullptr) {
1670 RecordLocation fp(this, "%d", i);
1671 record_mh(thread, mh);
1672 }
1673 }
1674 }
1675 }
1676 }
1677 }
1678
1679 void ciEnv::dump_compile_data(outputStream* out) {
1680 CompileTask* task = this->task();
1681 if (task) {
1682 #ifdef COMPILER2
1683 if (ReplayReduce && compiler_data() != nullptr) {
1684 // Dump C2 "reduced" inlining data.
1685 ((Compile*)compiler_data())->dump_inline_data_reduced(out);
1686 }
1687 #endif
1688 Method* method = task->method();
1689 int entry_bci = task->osr_bci();
1690 int comp_level = task->comp_level();
1691 out->print("compile ");
1692 get_method(method)->dump_name_as_ascii(out);
1693 out->print(" %d %d", entry_bci, comp_level);
1694 if (compiler_data() != nullptr) {
1695 if (is_c2_compile(comp_level)) {
1696 #ifdef COMPILER2
1697 // Dump C2 inlining data.
1698 ((Compile*)compiler_data())->dump_inline_data(out);
1699 #endif
1700 } else if (is_c1_compile(comp_level)) {
1701 #ifdef COMPILER1
1702 // Dump C1 inlining data.
1703 ((Compilation*)compiler_data())->dump_inline_data(out);
1704 #endif
1705 }
1706 }
1707 out->cr();
1708 }
1709 }
1710
1711 // Called from VM error reporter, so be careful.
1712 // Don't safepoint or acquire any locks.
1713 //
1714 void ciEnv::dump_replay_data_helper(outputStream* out) {
1715 NoSafepointVerifier no_safepoint;
1716 ResourceMark rm;
1717
1718 dump_replay_data_version(out);
1719 #if INCLUDE_JVMTI
1720 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1721 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1722 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1723 #endif // INCLUDE_JVMTI
1724
1725 find_dynamic_call_sites();
1726
1727 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1728 out->print_cr("# %d ciObject found", objects->length());
1729
1730 // The very first entry is the InstanceKlass of the root method of the current compilation in order to get the right
1731 // protection domain to load subsequent classes during replay compilation.
1732 ciInstanceKlass::dump_replay_instanceKlass(out, task()->method()->method_holder());
1733
1734 for (int i = 0; i < objects->length(); i++) {
1735 objects->at(i)->dump_replay_data(out);
1736 }
1737 dump_compile_data(out);
1738 out->flush();
1739 }
1740
1741 // Called from VM error reporter, so be careful.
1742 // Don't safepoint or acquire any locks.
1743 //
1744 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1745 GUARDED_VM_ENTRY(
1746 dump_replay_data_helper(out);
1747 )
1748 }
1749
1750 void ciEnv::dump_replay_data(outputStream* out) {
1751 GUARDED_VM_ENTRY(
1752 MutexLocker ml(Compile_lock);
1753 dump_replay_data_helper(out);
1754 )
1755 }
1756
1757 void ciEnv::dump_replay_data(int compile_id) {
1758 char buffer[64];
1759 int ret = jio_snprintf(buffer, sizeof(buffer), "replay_pid%d_compid%d.log", os::current_process_id(), compile_id);
1760 if (ret > 0) {
1761 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1762 if (fd != -1) {
1763 FILE* replay_data_file = os::fdopen(fd, "w");
1764 if (replay_data_file != nullptr) {
1765 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1766 dump_replay_data(&replay_data_stream);
1767 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1768 } else {
1769 tty->print_cr("# Can't open file to dump replay data.");
1770 close(fd);
1771 }
1772 }
1773 }
1774 }
1775
1776 void ciEnv::dump_inline_data(int compile_id) {
1777 char buffer[64];
1778 int ret = jio_snprintf(buffer, sizeof(buffer), "inline_pid%d_compid%d.log", os::current_process_id(), compile_id);
1779 if (ret > 0) {
1780 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1781 if (fd != -1) {
1782 FILE* inline_data_file = os::fdopen(fd, "w");
1783 if (inline_data_file != nullptr) {
1784 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1785 GUARDED_VM_ENTRY(
1786 MutexLocker ml(Compile_lock);
1787 dump_replay_data_version(&replay_data_stream);
1788 dump_compile_data(&replay_data_stream);
1789 )
1790 replay_data_stream.flush();
1791 tty->print("# Compiler inline data is saved as: ");
1792 tty->print_cr("%s", buffer);
1793 } else {
1794 tty->print_cr("# Can't open file to dump inline data.");
1795 close(fd);
1796 }
1797 }
1798 }
1799 }
1800
1801 void ciEnv::dump_replay_data_version(outputStream* out) {
1802 out->print_cr("version %d", REPLAY_VERSION);
1803 }
1804
1805 bool ciEnv::is_precompiled() {
1806 return (task() != nullptr) && (task()->compile_reason() == CompileTask::Reason_Precompile ||
1807 task()->compile_reason() == CompileTask::Reason_PrecompileForPreload);
1808 }
1809
1810 bool ciEnv::is_fully_initialized(InstanceKlass* ik) {
1811 assert(is_precompiled(), "");
1812 if (task()->method()->method_holder() == ik) {
1813 return true; // FIXME: may be too strong; being_initialized, at least
1814 }
1815 switch (task()->compile_reason()) {
1816 case CompileTask::Reason_Precompile: {
1817 // check init dependencies
1818 MethodTrainingData* mtd = TrainingData::lookup_for(task()->method());
1819 if (mtd != nullptr) {
1820 CompileTrainingData* ctd = mtd->last_toplevel_compile(task()->comp_level());
1821 if (ctd != nullptr) {
1822 for (int i = 0; i < ctd->init_dep_count(); i++) {
1823 KlassTrainingData* ktd = ctd->init_dep(i);
1824 if (ktd->has_holder() && (ktd->holder() == ik)) {
1825 log_trace(precompile)("%d: init_dependency: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name());
1826 return true; // init dependency present
1827 }
1828 }
1829 }
1830 }
1831 return false; // no init dependency
1832 }
1833 case CompileTask::Reason_PrecompileForPreload: {
1834 // FIXME: assumes that all shared classes are initialized
1835 if (ik->is_shared()) {
1836 return true; // class init barriers
1837 }
1838 if (CDSConfig::is_dumping_final_static_archive() && ArchiveBuilder::is_active() &&
1839 ArchiveBuilder::current()->has_been_archived((address)ik)) {
1840 return true; // class init barriers
1841 }
1842 return false;
1843 }
1844 default: fatal("%s", CompileTask::reason_name(task()->compile_reason()));
1845 }
1846 return false;
1847 }
1848
1849 InstanceKlass::ClassState ciEnv::compute_init_state_for_precompiled(InstanceKlass* ik) {
1850 ASSERT_IN_VM;
1851 assert(is_precompiled(), "");
1852 ResourceMark rm;
1853 if (is_fully_initialized(ik)) {
1854 log_trace(precompile)("%d: fully_initialized: %s", task()->compile_id(), ik->external_name());
1855 return InstanceKlass::ClassState::fully_initialized;
1856 } else if (MetaspaceObj::is_shared(ik)) {
1857 guarantee(ik->is_loaded(), ""); // FIXME: assumes pre-loading by CDS; ik->is_linked() requires pre-linking
1858 log_trace(precompile)("%d: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name());
1859 return ik->init_state(); // not yet initialized
1860 } else if (CDSConfig::is_dumping_final_static_archive() && ArchiveBuilder::is_active()) {
1861 if (!ArchiveBuilder::current()->has_been_archived((address)ik)) {
1862 fatal("New workflow: should not compile code for unarchived class: %s", ik->external_name());
1863 }
1864 guarantee(ik->is_loaded(), "");
1865 log_trace(precompile)("%d: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name());
1866 return ik->init_state(); // not yet initialized
1867 } else {
1868 // Not present in the archive.
1869 fatal("unloaded: %s", ik->external_name());
1870 // guarantee(SystemDictionaryShared::lookup_init_state(ik) == ik->init_state(), "");
1871 log_trace(precompile)("%d: allocated: %s", task()->compile_id(), ik->external_name());
1872 return InstanceKlass::ClassState::allocated; // not yet linked
1873 }
1874 }