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