1 /*
2 * Copyright (c) 1999, 2025, 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 "cds/aotConstantPoolResolver.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/aotCodeCache.hpp"
44 #include "code/codeCache.hpp"
45 #include "code/scopeDesc.hpp"
46 #include "compiler/compilationLog.hpp"
47 #include "compiler/compilationPolicy.hpp"
48 #include "compiler/compileBroker.hpp"
49 #include "compiler/compileLog.hpp"
50 #include "compiler/compilerEvent.hpp"
51 #include "compiler/compileTask.hpp"
52 #include "compiler/disassembler.hpp"
53 #include "gc/shared/barrierSetNMethod.hpp"
54 #include "gc/shared/collectedHeap.inline.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, Arena::Tag::tag_cienv) {
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 _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, Arena::Tag::tag_cienv) {
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 _dyno_klasses = nullptr;
303 _dyno_locs = nullptr;
304 }
305
306 ciEnv::~ciEnv() {
307 GUARDED_VM_ENTRY(
308 CompilerThread* current_thread = CompilerThread::current();
309 _factory->remove_symbols();
310 // Need safepoint to clear the env on the thread. RedefineClasses might
311 // be reading it.
312 current_thread->set_env(nullptr);
313 )
314 }
315
316 // ------------------------------------------------------------------
317 // Cache Jvmti state
318 bool ciEnv::cache_jvmti_state() {
319 VM_ENTRY_MARK;
320 // Get Jvmti capabilities under lock to get consistent values.
321 MutexLocker mu(JvmtiThreadState_lock);
322 _jvmti_redefinition_count = JvmtiExport::redefinition_count();
323 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
324 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
325 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
326 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
327 _jvmti_can_get_owned_monitor_info = JvmtiExport::can_get_owned_monitor_info();
328 _jvmti_can_walk_any_space = JvmtiExport::can_walk_any_space();
329 return _task != nullptr && _task->method()->is_old();
330 }
331
332 bool ciEnv::jvmti_state_changed() const {
333 // Some classes were redefined
334 if (_jvmti_redefinition_count != JvmtiExport::redefinition_count()) {
335 return true;
336 }
337
338 if (!_jvmti_can_access_local_variables &&
339 JvmtiExport::can_access_local_variables()) {
340 return true;
341 }
342 if (!_jvmti_can_hotswap_or_post_breakpoint &&
343 JvmtiExport::can_hotswap_or_post_breakpoint()) {
344 return true;
345 }
346 if (!_jvmti_can_post_on_exceptions &&
347 JvmtiExport::can_post_on_exceptions()) {
348 return true;
349 }
350 if (!_jvmti_can_pop_frame &&
351 JvmtiExport::can_pop_frame()) {
352 return true;
353 }
354 if (!_jvmti_can_get_owned_monitor_info &&
355 JvmtiExport::can_get_owned_monitor_info()) {
356 return true;
357 }
358 if (!_jvmti_can_walk_any_space &&
359 JvmtiExport::can_walk_any_space()) {
360 return true;
361 }
362
363 return false;
364 }
365
366 // ------------------------------------------------------------------
367 // Cache DTrace flags
368 void ciEnv::cache_dtrace_flags() {
369 // Need lock?
370 _dtrace_method_probes = DTraceMethodProbes;
371 _dtrace_alloc_probes = DTraceAllocProbes;
372 }
373
374 ciInstanceKlass* ciEnv::get_box_klass_for_primitive_type(BasicType type) {
375 switch (type) {
376 case T_BOOLEAN: return Boolean_klass();
377 case T_BYTE : return Byte_klass();
378 case T_CHAR : return Character_klass();
379 case T_SHORT : return Short_klass();
380 case T_INT : return Integer_klass();
381 case T_LONG : return Long_klass();
382 case T_FLOAT : return Float_klass();
383 case T_DOUBLE : return Double_klass();
384
385 default:
386 assert(false, "not a primitive: %s", type2name(type));
387 return nullptr;
388 }
389 }
390
391 ciInstance* ciEnv::the_null_string() {
392 if (_the_null_string == nullptr) {
393 VM_ENTRY_MARK;
394 _the_null_string = get_object(Universe::the_null_string())->as_instance();
395 }
396 return _the_null_string;
397 }
398
399 ciInstance* ciEnv::the_min_jint_string() {
400 if (_the_min_jint_string == nullptr) {
401 VM_ENTRY_MARK;
402 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
403 }
404 return _the_min_jint_string;
405 }
406
407 // ------------------------------------------------------------------
408 // ciEnv::get_method_from_handle
409 ciMethod* ciEnv::get_method_from_handle(Method* method) {
410 VM_ENTRY_MARK;
411 return get_metadata(method)->as_method();
412 }
413
414 // ------------------------------------------------------------------
415 // ciEnv::check_klass_accessiblity
416 //
417 // Note: the logic of this method should mirror the logic of
418 // ConstantPool::verify_constant_pool_resolve.
419 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
420 Klass* resolved_klass) {
421 if (accessing_klass == nullptr || !accessing_klass->is_loaded()) {
422 return true;
423 }
424 if (accessing_klass->is_obj_array_klass()) {
425 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
426 }
427 if (!accessing_klass->is_instance_klass()) {
428 return true;
429 }
430
431 if (resolved_klass->is_objArray_klass()) {
432 // Find the element klass, if this is an array.
433 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
434 }
435 if (resolved_klass->is_instance_klass()) {
436 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
437 InstanceKlass::cast(resolved_klass),
438 true) == Reflection::ACCESS_OK);
439 }
440 return true;
441 }
442
443 // ------------------------------------------------------------------
444 // ciEnv::get_klass_by_name_impl
445 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
446 const constantPoolHandle& cpool,
447 ciSymbol* name,
448 bool require_local) {
449 ASSERT_IN_VM;
450 Thread* current = Thread::current();
451
452 // Now we need to check the SystemDictionary
453 Symbol* sym = name->get_symbol();
454 if (Signature::has_envelope(sym)) {
455 // This is a name from a signature. Strip off the trimmings.
456 // Call recursive to keep scope of strippedsym.
457 TempNewSymbol strippedsym = Signature::strip_envelope(sym);
458 ciSymbol* strippedname = get_symbol(strippedsym);
459 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
460 }
461
462 // Check for prior unloaded klass. The SystemDictionary's answers
463 // can vary over time but the compiler needs consistency.
464 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
465 if (unloaded_klass != nullptr) {
466 if (require_local) return nullptr;
467 return unloaded_klass;
468 }
469
470 Handle loader;
471 if (accessing_klass != nullptr) {
472 loader = Handle(current, accessing_klass->loader());
473 }
474
475 Klass* found_klass = require_local ?
476 SystemDictionary::find_instance_or_array_klass(current, sym, loader) :
477 SystemDictionary::find_constrained_instance_or_array_klass(current, sym, loader);
478
479 // If we fail to find an array klass, look again for its element type.
480 // The element type may be available either locally or via constraints.
481 // In either case, if we can find the element type in the system dictionary,
482 // we must build an array type around it. The CI requires array klasses
483 // to be loaded if their element klasses are loaded, except when memory
484 // is exhausted.
485 if (Signature::is_array(sym) &&
486 (sym->char_at(1) == JVM_SIGNATURE_ARRAY || sym->char_at(1) == JVM_SIGNATURE_CLASS)) {
487 // We have an unloaded array.
488 // Build it on the fly if the element class exists.
489 SignatureStream ss(sym, false);
490 ss.skip_array_prefix(1);
491 // Get element ciKlass recursively.
492 ciKlass* elem_klass =
493 get_klass_by_name_impl(accessing_klass,
494 cpool,
495 get_symbol(ss.as_symbol()),
496 require_local);
497 if (elem_klass != nullptr && elem_klass->is_loaded()) {
498 // Now make an array for it
499 return ciObjArrayKlass::make_impl(elem_klass);
500 }
501 }
502
503 if (found_klass == nullptr && !cpool.is_null() && cpool->has_preresolution()) {
504 // Look inside the constant pool for pre-resolved class entries.
505 for (int i = cpool->length() - 1; i >= 1; i--) {
506 if (cpool->tag_at(i).is_klass()) {
507 Klass* kls = cpool->resolved_klass_at(i);
508 if (kls->name() == sym) {
509 found_klass = kls;
510 break;
511 }
512 }
513 }
514 }
515
516 if (found_klass != nullptr) {
517 // Found it. Build a CI handle.
518 return get_klass(found_klass);
519 }
520
521 if (require_local) return nullptr;
522
523 // Not yet loaded into the VM, or not governed by loader constraints.
524 // Make a CI representative for it.
525 return get_unloaded_klass(accessing_klass, name);
526 }
527
528 // ------------------------------------------------------------------
529 // ciEnv::get_klass_by_name
530 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
531 ciSymbol* klass_name,
532 bool require_local) {
533 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
534 constantPoolHandle(),
535 klass_name,
536 require_local);)
537 }
538
539 // ------------------------------------------------------------------
540 // ciEnv::get_klass_by_index_impl
541 //
542 // Implementation of get_klass_by_index.
543 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
544 int index,
545 bool& is_accessible,
546 ciInstanceKlass* accessor) {
547 Klass* klass = nullptr;
548 Symbol* klass_name = nullptr;
549
550 if (cpool->tag_at(index).is_symbol()) {
551 klass_name = cpool->symbol_at(index);
552 } else {
553 // Check if it's resolved if it's not a symbol constant pool entry.
554 klass = ConstantPool::klass_at_if_loaded(cpool, index);
555 // Try to look it up by name.
556 if (klass == nullptr) {
557 klass_name = cpool->klass_name_at(index);
558 }
559 }
560
561 if (klass == nullptr) {
562 // Not found in constant pool. Use the name to do the lookup.
563 ciKlass* k = get_klass_by_name_impl(accessor,
564 cpool,
565 get_symbol(klass_name),
566 false);
567 // Calculate accessibility the hard way.
568 if (!k->is_loaded()) {
569 is_accessible = false;
570 } else if (k->loader() != accessor->loader() &&
571 get_klass_by_name_impl(accessor, cpool, k->name(), true) == nullptr) {
572 // Loaded only remotely. Not linked yet.
573 is_accessible = false;
574 } else {
575 // Linked locally, and we must also check public/private, etc.
576 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
577 }
578 return k;
579 }
580
581 // Check for prior unloaded klass. The SystemDictionary's answers
582 // can vary over time but the compiler needs consistency.
583 ciSymbol* name = get_symbol(klass->name());
584 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
585 if (unloaded_klass != nullptr) {
586 is_accessible = false;
587 return unloaded_klass;
588 }
589
590 // It is known to be accessible, since it was found in the constant pool.
591 ciKlass* ciKlass = get_klass(klass);
592 is_accessible = true;
593 if (ReplayCompiles && ciKlass == _unloaded_ciinstance_klass) {
594 // Klass was unresolved at replay dump time and therefore not accessible.
595 is_accessible = false;
596 }
597 return ciKlass;
598 }
599
600 // ------------------------------------------------------------------
601 // ciEnv::get_klass_by_index
602 //
603 // Get a klass from the constant pool.
604 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
605 int index,
606 bool& is_accessible,
607 ciInstanceKlass* accessor) {
608 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
609 }
610
611 // ------------------------------------------------------------------
612 // ciEnv::unbox_primitive_value
613 //
614 // Unbox a primitive and return it as a ciConstant.
615 ciConstant ciEnv::unbox_primitive_value(ciObject* cibox, BasicType expected_bt) {
616 jvalue value;
617 BasicType bt = java_lang_boxing_object::get_value(cibox->get_oop(), &value);
618 if (bt != expected_bt && expected_bt != T_ILLEGAL) {
619 assert(false, "type mismatch: %s vs %s", type2name(expected_bt), cibox->klass()->name()->as_klass_external_name());
620 return ciConstant();
621 }
622 switch (bt) {
623 case T_BOOLEAN: return ciConstant(bt, value.z);
624 case T_BYTE: return ciConstant(bt, value.b);
625 case T_SHORT: return ciConstant(bt, value.s);
626 case T_CHAR: return ciConstant(bt, value.c);
627 case T_INT: return ciConstant(bt, value.i);
628 case T_LONG: return ciConstant(value.j);
629 case T_FLOAT: return ciConstant(value.f);
630 case T_DOUBLE: return ciConstant(value.d);
631
632 default:
633 assert(false, "not a primitive type: %s", type2name(bt));
634 return ciConstant();
635 }
636 }
637
638 // ------------------------------------------------------------------
639 // ciEnv::get_resolved_constant
640 //
641 ciConstant ciEnv::get_resolved_constant(const constantPoolHandle& cpool, int obj_index) {
642 assert(obj_index >= 0, "");
643 oop obj = cpool->resolved_reference_at(obj_index);
644 if (obj == nullptr) {
645 // Unresolved constant. It is resolved when the corresponding slot contains a non-null reference.
646 // Null constant is represented as a sentinel (non-null) value.
647 return ciConstant();
648 } else if (obj == Universe::the_null_sentinel()) {
649 return ciConstant(T_OBJECT, get_object(nullptr));
650 } else {
651 ciObject* ciobj = get_object(obj);
652 if (ciobj->is_array()) {
653 return ciConstant(T_ARRAY, ciobj);
654 } else {
655 int cp_index = cpool->object_to_cp_index(obj_index);
656 BasicType bt = cpool->basic_type_for_constant_at(cp_index);
657 if (is_java_primitive(bt)) {
658 assert(cpool->tag_at(cp_index).is_dynamic_constant(), "sanity");
659 return unbox_primitive_value(ciobj, bt);
660 } else {
661 assert(ciobj->is_instance(), "should be an instance");
662 return ciConstant(T_OBJECT, ciobj);
663 }
664 }
665 }
666 }
667
668 // ------------------------------------------------------------------
669 // ciEnv::get_constant_by_index_impl
670 //
671 // Implementation of get_constant_by_index().
672 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
673 int index, int obj_index,
674 ciInstanceKlass* accessor) {
675 if (obj_index >= 0) {
676 ciConstant con = get_resolved_constant(cpool, obj_index);
677 if (con.should_be_constant()) {
678 return con;
679 }
680 }
681 constantTag tag = cpool->tag_at(index);
682 if (tag.is_int()) {
683 return ciConstant(T_INT, (jint)cpool->int_at(index));
684 } else if (tag.is_long()) {
685 return ciConstant((jlong)cpool->long_at(index));
686 } else if (tag.is_float()) {
687 return ciConstant((jfloat)cpool->float_at(index));
688 } else if (tag.is_double()) {
689 return ciConstant((jdouble)cpool->double_at(index));
690 } else if (tag.is_string()) {
691 EXCEPTION_CONTEXT;
692 assert(obj_index >= 0, "should have an object index");
693 oop string = cpool->string_at(index, obj_index, THREAD);
694 if (HAS_PENDING_EXCEPTION) {
695 CLEAR_PENDING_EXCEPTION;
696 record_out_of_memory_failure();
697 return ciConstant();
698 }
699 ciInstance* constant = get_object(string)->as_instance();
700 return ciConstant(T_OBJECT, constant);
701 } else if (tag.is_unresolved_klass_in_error()) {
702 return ciConstant(T_OBJECT, get_unloaded_klass_mirror(nullptr));
703 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
704 bool will_link;
705 ciKlass* klass = get_klass_by_index_impl(cpool, index, will_link, accessor);
706 ciInstance* mirror = (will_link ? klass->java_mirror() : get_unloaded_klass_mirror(klass));
707 return ciConstant(T_OBJECT, mirror);
708 } else if (tag.is_method_type() || tag.is_method_type_in_error()) {
709 // must execute Java code to link this CP entry into cache[i].f1
710 assert(obj_index >= 0, "should have an object index");
711 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
712 ciObject* ciobj = get_unloaded_method_type_constant(signature);
713 return ciConstant(T_OBJECT, ciobj);
714 } else if (tag.is_method_handle() || tag.is_method_handle_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 bool ignore_will_link;
718 int ref_kind = cpool->method_handle_ref_kind_at(index);
719 int callee_index = cpool->method_handle_klass_index_at(index);
720 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
721 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
722 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
723 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
724 return ciConstant(T_OBJECT, ciobj);
725 } else if (tag.is_dynamic_constant() || tag.is_dynamic_constant_in_error()) {
726 assert(obj_index >= 0, "should have an object index");
727 return ciConstant(T_OBJECT, unloaded_ciinstance()); // unresolved dynamic constant
728 } else {
729 assert(false, "unknown tag: %d (%s)", tag.value(), tag.internal_name());
730 return ciConstant();
731 }
732 }
733
734 // ------------------------------------------------------------------
735 // ciEnv::get_constant_by_index
736 //
737 // Pull a constant out of the constant pool. How appropriate.
738 //
739 // Implementation note: this query is currently in no way cached.
740 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
741 int pool_index, int cache_index,
742 ciInstanceKlass* accessor) {
743 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
744 }
745
746 // ------------------------------------------------------------------
747 // ciEnv::get_field_by_index_impl
748 //
749 // Implementation of get_field_by_index.
750 //
751 // Implementation note: the results of field lookups are cached
752 // in the accessor klass.
753 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
754 int index, Bytecodes::Code bc) {
755 ciConstantPoolCache* cache = accessor->field_cache();
756 if (cache == nullptr) {
757 ciField* field = new (arena()) ciField(accessor, index, bc);
758 return field;
759 } else {
760 ciField* field = (ciField*)cache->get(index);
761 if (field == nullptr) {
762 field = new (arena()) ciField(accessor, index, bc);
763 cache->insert(index, field);
764 }
765 return field;
766 }
767 }
768
769 // ------------------------------------------------------------------
770 // ciEnv::get_field_by_index
771 //
772 // Get a field by index from a klass's constant pool.
773 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
774 int index, Bytecodes::Code bc) {
775 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index, bc);)
776 }
777
778 // ------------------------------------------------------------------
779 // ciEnv::lookup_method
780 //
781 // Perform an appropriate method lookup based on accessor, holder,
782 // name, signature, and bytecode.
783 Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
784 ciKlass* holder,
785 Symbol* name,
786 Symbol* sig,
787 Bytecodes::Code bc,
788 constantTag tag) {
789 InstanceKlass* accessor_klass = accessor->get_instanceKlass();
790 Klass* holder_klass = holder->get_Klass();
791
792 // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
793 assert(check_klass_accessibility(accessor, holder_klass), "holder not accessible");
794
795 LinkInfo link_info(holder_klass, name, sig, accessor_klass,
796 LinkInfo::AccessCheck::required,
797 LinkInfo::LoaderConstraintCheck::required,
798 tag);
799 switch (bc) {
800 case Bytecodes::_invokestatic:
801 return LinkResolver::resolve_static_call_or_null(link_info);
802 case Bytecodes::_invokespecial:
803 return LinkResolver::resolve_special_call_or_null(link_info);
804 case Bytecodes::_invokeinterface:
805 return LinkResolver::linktime_resolve_interface_method_or_null(link_info);
806 case Bytecodes::_invokevirtual:
807 return LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
808 default:
809 fatal("Unhandled bytecode: %s", Bytecodes::name(bc));
810 return nullptr; // silence compiler warnings
811 }
812 }
813
814
815 // ------------------------------------------------------------------
816 // ciEnv::get_method_by_index_impl
817 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
818 int index, Bytecodes::Code bc,
819 ciInstanceKlass* accessor) {
820 assert(cpool.not_null(), "need constant pool");
821 assert(accessor != nullptr, "need origin of access");
822 if (bc == Bytecodes::_invokedynamic) {
823 // FIXME: code generation could allow for null (unlinked) call site
824 // The call site could be made patchable as follows:
825 // Load the appendix argument from the constant pool.
826 // Test the appendix argument and jump to a known deopt routine if it is null.
827 // Jump through a patchable call site, which is initially a deopt routine.
828 // Patch the call site to the nmethod entry point of the static compiled lambda form.
829 // As with other two-component call sites, both values must be independently verified.
830 assert(index < cpool->cache()->resolved_indy_entries_length(), "impossible");
831 ResolvedIndyEntry* indy_info = cpool->resolved_indy_entry_at(index);
832 Method* adapter = indy_info->method();
833 #if INCLUDE_CDS
834 if (is_precompile() && !AOTConstantPoolResolver::is_resolution_deterministic(cpool(), indy_info->constant_pool_index())) {
835 // This is an indy callsite that was resolved as a side effect of VM bootstrap, but
836 // it cannot be cached in the resolved state, so AOT code should not reference it.
837 adapter = nullptr;
838 }
839 #endif
840 // Resolved if the adapter is non null.
841 if (adapter != nullptr) {
842 return get_method(adapter);
843 }
844
845 // Fake a method that is equivalent to a declared method.
846 ciInstanceKlass* holder = get_instance_klass(vmClasses::MethodHandle_klass());
847 ciSymbol* name = ciSymbols::invokeBasic_name();
848 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index, bc));
849 return get_unloaded_method(holder, name, signature, accessor);
850 } else {
851 const int holder_index = cpool->klass_ref_index_at(index, bc);
852 bool holder_is_accessible;
853 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
854
855 // Get the method's name and signature.
856 Symbol* name_sym = cpool->name_ref_at(index, bc);
857 Symbol* sig_sym = cpool->signature_ref_at(index, bc);
858
859 if (cpool->has_preresolution()
860 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
861 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
862 // Short-circuit lookups for JSR 292-related call sites.
863 // That is, do not rely only on name-based lookups, because they may fail
864 // if the names are not resolvable in the boot class loader (7056328).
865 switch (bc) {
866 case Bytecodes::_invokevirtual:
867 case Bytecodes::_invokeinterface:
868 case Bytecodes::_invokespecial:
869 case Bytecodes::_invokestatic:
870 {
871 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
872 if (m != nullptr) {
873 return get_method(m);
874 }
875 }
876 break;
877 default:
878 break;
879 }
880 }
881
882 if (holder_is_accessible) { // Our declared holder is loaded.
883 constantTag tag = cpool->tag_ref_at(index, bc);
884 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
885 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
886 if (m != nullptr) {
887 ciInstanceKlass* cik = get_instance_klass(m->method_holder());
888 if ((bc == Bytecodes::_invokestatic && cik->is_not_initialized()) || !cik->is_loaded()) {
889 m = nullptr;
890 }
891 }
892 if (m != nullptr && ReplayCompiles && !ciReplay::is_loaded(m)) {
893 m = nullptr;
894 }
895 if (m != nullptr) {
896 // We found the method.
897 return get_method(m);
898 }
899 }
900
901 // Either the declared holder was not loaded, or the method could
902 // not be found. Create a dummy ciMethod to represent the failed
903 // lookup.
904 ciSymbol* name = get_symbol(name_sym);
905 ciSymbol* signature = get_symbol(sig_sym);
906 return get_unloaded_method(holder, name, signature, accessor);
907 }
908 }
909
910
911 // ------------------------------------------------------------------
912 // ciEnv::get_instance_klass_for_declared_method_holder
913 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
914 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
915 // instead of a ciInstanceKlass. For that case simply pretend that the
916 // declared holder is Object.clone since that's where the call will bottom out.
917 // A more correct fix would trickle out through many interfaces in CI,
918 // requiring ciInstanceKlass* to become ciKlass* and many more places would
919 // require checks to make sure the expected type was found. Given that this
920 // only occurs for clone() the more extensive fix seems like overkill so
921 // instead we simply smear the array type into Object.
922 guarantee(method_holder != nullptr, "no method holder");
923 if (method_holder->is_instance_klass()) {
924 return method_holder->as_instance_klass();
925 } else if (method_holder->is_array_klass()) {
926 return current()->Object_klass();
927 } else {
928 ShouldNotReachHere();
929 }
930 return nullptr;
931 }
932
933
934 // ------------------------------------------------------------------
935 // ciEnv::get_method_by_index
936 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
937 int index, Bytecodes::Code bc,
938 ciInstanceKlass* accessor) {
939 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
940 }
941
942
943 // ------------------------------------------------------------------
944 // ciEnv::name_buffer
945 char *ciEnv::name_buffer(int req_len) {
946 if (_name_buffer_len < req_len) {
947 if (_name_buffer == nullptr) {
948 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
949 _name_buffer_len = req_len;
950 } else {
951 _name_buffer =
952 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
953 _name_buffer_len = req_len;
954 }
955 }
956 return _name_buffer;
957 }
958
959 // ------------------------------------------------------------------
960 // ciEnv::is_in_vm
961 bool ciEnv::is_in_vm() {
962 return JavaThread::current()->thread_state() == _thread_in_vm;
963 }
964
965 // ------------------------------------------------------------------
966 // ciEnv::validate_compile_task_dependencies
967 //
968 // Check for changes during compilation (e.g. class loads, evolution,
969 // breakpoints, call site invalidation).
970 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
971 assert(!failing(), "should not call this when failing");
972
973 Dependencies::DepType result = dependencies()->validate_dependencies(_task);
974 if (result != Dependencies::end_marker) {
975 if (result == Dependencies::call_site_target_value) {
976 _inc_decompile_count_on_failure = false;
977 record_failure("call site target change");
978 } else if (Dependencies::is_klass_type(result)) {
979 record_failure("concurrent class loading");
980 } else {
981 record_failure("invalid non-klass dependency");
982 }
983 }
984 }
985
986 // aot_code_entry != nullptr implies loading compiled code from AOT code cache
987 bool ciEnv::is_compilation_valid(JavaThread* thread, ciMethod* target, bool preload, bool install_code, CodeBuffer* code_buffer, AOTCodeEntry* aot_code_entry) {
988 methodHandle method(thread, target->get_Method());
989
990 // We require method counters to store some method state (max compilation levels) required by the compilation policy.
991 if (!preload && method->get_method_counters(thread) == nullptr) {
992 record_failure("can't create method counters");
993 if (code_buffer != nullptr) {
994 code_buffer->free_blob();
995 }
996 return false;
997 }
998
999 if (aot_code_entry != nullptr) {
1000 // Invalid compilation states:
1001 // - AOTCodeCache is closed, AOTCode entry is garbage.
1002 // - AOTCode entry indicates this shared code was marked invalid while it was loaded.
1003 if (!AOTCodeCache::is_on() || aot_code_entry->not_entrant()) {
1004 return false;
1005 }
1006 }
1007
1008 // Change in Jvmti state may invalidate compilation.
1009 if (!failing() && jvmti_state_changed()) {
1010 record_failure("Jvmti state change invalidated dependencies");
1011 }
1012
1013 // Change in DTrace flags may invalidate compilation.
1014 if (!failing() &&
1015 ( (!dtrace_method_probes() && DTraceMethodProbes) ||
1016 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
1017 record_failure("DTrace flags change invalidated dependencies");
1018 }
1019
1020 if (!preload && !failing() && target->needs_clinit_barrier() &&
1021 target->holder()->is_in_error_state()) {
1022 record_failure("method holder is in error state");
1023 }
1024
1025 if (!failing() && (aot_code_entry == nullptr)) {
1026 if (log() != nullptr) {
1027 // Log the dependencies which this compilation declares.
1028 dependencies()->log_all_dependencies();
1029 }
1030
1031 // Encode the dependencies now, so we can check them right away.
1032 dependencies()->encode_content_bytes();
1033 }
1034 // Check for {class loads, evolution, breakpoints, ...} during compilation
1035 if (!failing() && install_code) {
1036 // Check for {class loads, evolution, breakpoints, ...} during compilation
1037 validate_compile_task_dependencies(target);
1038 if (failing() && preload) {
1039 ResourceMark rm;
1040 char *method_name = method->name_and_sig_as_C_string();
1041 log_info(aot, codecache)("preload code for '%s' failed dependency check", method_name);
1042 }
1043 }
1044
1045 if (failing()) {
1046 // While not a true deoptimization, it is a preemptive decompile.
1047 MethodData* mdo = method()->method_data();
1048 if (mdo != nullptr && _inc_decompile_count_on_failure) {
1049 mdo->inc_decompile_count();
1050 }
1051
1052 if (code_buffer != nullptr) {
1053 code_buffer->free_blob();
1054 }
1055 return false;
1056 }
1057 return true;
1058 }
1059
1060 void ciEnv::make_code_usable(JavaThread* thread, ciMethod* target, bool preload, int entry_bci, AOTCodeEntry* aot_code_entry, nmethod* nm) {
1061 methodHandle method(thread, target->get_Method());
1062
1063 if (entry_bci == InvocationEntryBci) {
1064 if (TieredCompilation) {
1065 // If there is an old version we're done with it
1066 nmethod* old = method->code();
1067 if (TraceMethodReplacement && old != nullptr) {
1068 ResourceMark rm;
1069 char *method_name = method->name_and_sig_as_C_string();
1070 tty->print_cr("Replacing method %s", method_name);
1071 }
1072 if (old != nullptr) {
1073 old->make_not_used();
1074 }
1075 }
1076
1077 LogTarget(Info, nmethod, install) lt;
1078 if (lt.is_enabled()) {
1079 ResourceMark rm;
1080 char *method_name = method->name_and_sig_as_C_string();
1081 lt.print("Installing method (L%d) %s id=%d aot=%s%s%u",
1082 task()->comp_level(), method_name, compile_id(),
1083 task()->is_aot_load() ? "A" : "", preload ? "P" : "",
1084 (aot_code_entry != nullptr ? aot_code_entry->offset() : 0));
1085 }
1086 // Allow the code to be executed
1087 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
1088 if (nm->make_in_use()) {
1089 #ifdef ASSERT
1090 BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
1091 if (bs_nm != nullptr && bs_nm->supports_entry_barrier(nm)) {
1092 if (!bs_nm->is_armed(nm)) {
1093 log_info(init)("nmethod %d %d not armed", nm->compile_id(), nm->comp_level());
1094 }
1095 }
1096 #endif // ASSERT
1097 if (preload) {
1098 nm->set_preloaded(true);
1099 method->set_preload_code(nm);
1100 }
1101 if (!preload || target->holder()->is_linked()) {
1102 method->set_code(method, nm);
1103 }
1104 }
1105 } else {
1106 LogTarget(Info, nmethod, install) lt;
1107 if (lt.is_enabled()) {
1108 assert(aot_code_entry == nullptr && !task()->is_aot_load(), "OSR nmethods are not AOT compiled");
1109 ResourceMark rm;
1110 char *method_name = method->name_and_sig_as_C_string();
1111 lt.print("Installing osr method (L%d) %s @ %d id=%u",
1112 task()->comp_level(), method_name, entry_bci, compile_id());
1113 }
1114 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
1115 if (nm->make_in_use()) {
1116 method->method_holder()->add_osr_nmethod(nm);
1117 }
1118 }
1119 }
1120
1121 nmethod* ciEnv::register_aot_method(JavaThread* thread,
1122 ciMethod* target,
1123 AbstractCompiler* compiler,
1124 nmethod* archived_nm,
1125 address reloc_data,
1126 GrowableArray<Handle>& oop_list,
1127 GrowableArray<Metadata*>& metadata_list,
1128 ImmutableOopMapSet* oopmaps,
1129 address immutable_data,
1130 GrowableArray<Handle>& reloc_imm_oop_list,
1131 GrowableArray<Metadata*>& reloc_imm_metadata_list,
1132 AOTCodeReader* aot_code_reader)
1133 {
1134 AOTCodeEntry* aot_code_entry = task()->aot_code_entry();
1135 assert(aot_code_entry != nullptr, "must be");
1136 nmethod* nm = nullptr;
1137 {
1138 methodHandle method(thread, target->get_Method());
1139 bool preload = task()->preload(); // Code is preloaded before Java method execution
1140
1141 // Check if memory should be freed before allocation
1142 CodeCache::gc_on_allocation();
1143
1144 // To prevent compile queue updates.
1145 MutexLocker locker(thread, task()->compile_queue()->lock());
1146
1147 // Prevent InstanceKlass::add_to_hierarchy from running
1148 // and invalidating our dependencies until we install this method.
1149 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
1150 MutexLocker ml(Compile_lock);
1151 NoSafepointVerifier nsv;
1152
1153 if (!is_compilation_valid(thread, target, preload, true /*install_code*/, nullptr /*code_buffer*/, aot_code_entry)) {
1154 return nullptr;
1155 }
1156
1157 nm = nmethod::new_nmethod(archived_nm,
1158 method,
1159 compiler,
1160 compile_id(),
1161 reloc_data,
1162 oop_list,
1163 metadata_list,
1164 oopmaps,
1165 immutable_data,
1166 reloc_imm_oop_list,
1167 reloc_imm_metadata_list,
1168 aot_code_reader);
1169
1170 if (nm != nullptr) {
1171 aot_code_entry->set_loaded();
1172 make_code_usable(thread, target, preload, InvocationEntryBci, aot_code_entry, nm);
1173 }
1174 }
1175
1176 NoSafepointVerifier nsv;
1177 if (nm != nullptr) {
1178 // Compilation succeeded, post what we know about it
1179 nm->post_compiled_method(task());
1180 task()->set_num_inlined_bytecodes(num_inlined_bytecodes());
1181 } else {
1182 // The CodeCache is full.
1183 record_failure("code cache is full");
1184 }
1185 return nm;
1186 // safepoints are allowed again
1187 }
1188
1189 // ------------------------------------------------------------------
1190 // ciEnv::register_method
1191 void ciEnv::register_method(ciMethod* target,
1192 int entry_bci,
1193 CodeOffsets* offsets,
1194 int orig_pc_offset,
1195 CodeBuffer* code_buffer,
1196 int frame_words,
1197 OopMapSet* oop_map_set,
1198 ExceptionHandlerTable* handler_table,
1199 ImplicitExceptionTable* inc_table,
1200 AbstractCompiler* compiler,
1201 bool has_clinit_barriers,
1202 bool for_preload,
1203 bool has_unsafe_access,
1204 bool has_wide_vectors,
1205 bool has_monitors,
1206 bool has_scoped_access,
1207 int immediate_oops_patched,
1208 bool install_code,
1209 AOTCodeEntry* aot_code_entry) {
1210 VM_ENTRY_MARK;
1211 nmethod* nm = nullptr;
1212 {
1213 methodHandle method(THREAD, target->get_Method());
1214 bool preload = task()->preload(); // Code is preloaded before Java method execution
1215
1216 // Check if memory should be freed before allocation
1217 CodeCache::gc_on_allocation();
1218
1219 // To prevent compile queue updates.
1220 MutexLocker locker(THREAD, task()->compile_queue()->lock());
1221
1222 // Prevent InstanceKlass::add_to_hierarchy from running
1223 // and invalidating our dependencies until we install this method.
1224 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
1225 MutexLocker ml(Compile_lock);
1226 NoSafepointVerifier nsv;
1227
1228 if (!is_compilation_valid(THREAD, target, preload, install_code, code_buffer, aot_code_entry)) {
1229 return;
1230 }
1231
1232 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1233 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1234
1235 if (install_code) {
1236 nm = nmethod::new_nmethod(method,
1237 compile_id(),
1238 entry_bci,
1239 offsets,
1240 orig_pc_offset,
1241 debug_info(), dependencies(), code_buffer,
1242 frame_words, oop_map_set,
1243 handler_table, inc_table,
1244 compiler, CompLevel(task()->comp_level()),
1245 aot_code_entry);
1246 }
1247 // Free codeBlobs
1248 code_buffer->free_blob();
1249
1250 if (nm != nullptr) {
1251 nm->set_has_unsafe_access(has_unsafe_access);
1252 nm->set_has_wide_vectors(has_wide_vectors);
1253 nm->set_has_monitors(has_monitors);
1254 nm->set_has_scoped_access(has_scoped_access);
1255 nm->set_preloaded(preload);
1256 nm->set_has_clinit_barriers(has_clinit_barriers);
1257 assert(!method->is_synchronized() || nm->has_monitors(), "");
1258
1259 if (task()->is_precompile()) {
1260 aot_code_entry = AOTCodeCache::store_nmethod(nm, compiler, for_preload);
1261 if (aot_code_entry != nullptr) {
1262 aot_code_entry->set_inlined_bytecodes(num_inlined_bytecodes());
1263 }
1264 }
1265 make_code_usable(THREAD, target, preload, entry_bci, aot_code_entry, nm);
1266 }
1267 }
1268
1269 NoSafepointVerifier nsv;
1270 if (nm != nullptr) {
1271 // Compilation succeeded, post what we know about it
1272 nm->post_compiled_method(task());
1273 task()->set_num_inlined_bytecodes(num_inlined_bytecodes());
1274 } else if (install_code) {
1275 // The CodeCache is full.
1276 record_failure("code cache is full");
1277 } else {
1278 task()->set_num_inlined_bytecodes(num_inlined_bytecodes());
1279 }
1280
1281 // safepoints are allowed again
1282 }
1283
1284 // ------------------------------------------------------------------
1285 // ciEnv::find_system_klass
1286 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1287 VM_ENTRY_MARK;
1288 return get_klass_by_name_impl(nullptr, constantPoolHandle(), klass_name, false);
1289 }
1290
1291 // ------------------------------------------------------------------
1292 // ciEnv::comp_level
1293 int ciEnv::comp_level() {
1294 if (task() == nullptr) return CompilationPolicy::highest_compile_level();
1295 return task()->comp_level();
1296 }
1297
1298 // ------------------------------------------------------------------
1299 // ciEnv::compile_id
1300 int ciEnv::compile_id() {
1301 if (task() == nullptr) return 0;
1302 return task()->compile_id();
1303 }
1304
1305 // ------------------------------------------------------------------
1306 // ciEnv::notice_inlined_method()
1307 void ciEnv::notice_inlined_method(ciMethod* method) {
1308 _num_inlined_bytecodes += method->code_size_for_inlining();
1309 CompileTrainingData* ctd = task()->training_data();
1310 if (ctd != nullptr) {
1311 GUARDED_VM_ENTRY({
1312 methodHandle mh(Thread::current(), method->get_Method());
1313 ctd->notice_inlined_method(task(), mh);
1314 });
1315 }
1316 }
1317
1318 // ------------------------------------------------------------------
1319 // ciEnv::num_inlined_bytecodes()
1320 int ciEnv::num_inlined_bytecodes() const {
1321 return _num_inlined_bytecodes;
1322 }
1323
1324 // ------------------------------------------------------------------
1325 // ciEnv::record_failure()
1326 void ciEnv::record_failure(const char* reason) {
1327 // record the bailout for hserr envlog
1328 if (reason != nullptr) {
1329 if (CompilationLog::log() != nullptr) {
1330 CompilerThread* thread = CompilerThread::current();
1331 CompileTask* task = thread->task();
1332 CompilationLog::log()->log_failure(thread, task, reason, nullptr);
1333 }
1334 }
1335
1336 if (_failure_reason.get() == nullptr) {
1337 // Record the first failure reason.
1338 _failure_reason.set(reason);
1339 }
1340 }
1341
1342 void ciEnv::report_failure(const char* reason) {
1343 EventCompilationFailure event;
1344 if (event.should_commit()) {
1345 CompilerEvent::CompilationFailureEvent::post(event, compile_id(), reason);
1346 }
1347 }
1348
1349 // ------------------------------------------------------------------
1350 // ciEnv::record_method_not_compilable()
1351 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1352 int new_compilable =
1353 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1354
1355 // Only note transitions to a worse state
1356 if (new_compilable > _compilable) {
1357 if (log() != nullptr) {
1358 if (all_tiers) {
1359 log()->elem("method_not_compilable");
1360 } else {
1361 log()->elem("method_not_compilable_at_tier level='%d'",
1362 current()->task()->comp_level());
1363 }
1364 }
1365 _compilable = new_compilable;
1366
1367 // Reset failure reason; this one is more important.
1368 _failure_reason.clear();
1369 record_failure(reason);
1370 }
1371 }
1372
1373 // ------------------------------------------------------------------
1374 // ciEnv::record_out_of_memory_failure()
1375 void ciEnv::record_out_of_memory_failure() {
1376 // If memory is low, we stop compiling methods.
1377 record_method_not_compilable("out of memory");
1378 }
1379
1380 ciInstance* ciEnv::unloaded_ciinstance() {
1381 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1382 }
1383
1384 // ------------------------------------------------------------------
1385 // Replay support
1386
1387
1388 // Lookup location descriptor for the class, if any.
1389 // Returns false if not found.
1390 bool ciEnv::dyno_loc(const InstanceKlass* ik, const char *&loc) const {
1391 bool found = false;
1392 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1393 if (!found) {
1394 return false;
1395 }
1396 loc = _dyno_locs->at(pos);
1397 return found;
1398 }
1399
1400 // Associate the current location descriptor with the given class and record for later lookup.
1401 void ciEnv::set_dyno_loc(const InstanceKlass* ik) {
1402 const char *loc = os::strdup(_dyno_name);
1403 bool found = false;
1404 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1405 if (found) {
1406 _dyno_locs->at_put(pos, loc);
1407 } else {
1408 _dyno_klasses->insert_before(pos, ik);
1409 _dyno_locs->insert_before(pos, loc);
1410 }
1411 }
1412
1413 // Associate the current location descriptor with the given class and record for later lookup.
1414 // If it turns out that there are multiple locations for the given class, that conflict should
1415 // be handled here. Currently we choose the first location found.
1416 void ciEnv::record_best_dyno_loc(const InstanceKlass* ik) {
1417 if (!ik->is_hidden()) {
1418 return;
1419 }
1420 const char *loc0;
1421 if (!dyno_loc(ik, loc0)) {
1422 set_dyno_loc(ik);
1423 }
1424 }
1425
1426 // Look up the location descriptor for the given class and print it to the output stream.
1427 bool ciEnv::print_dyno_loc(outputStream* out, const InstanceKlass* ik) const {
1428 const char *loc;
1429 if (dyno_loc(ik, loc)) {
1430 out->print("%s", loc);
1431 return true;
1432 } else {
1433 return false;
1434 }
1435 }
1436
1437 // Look up the location descriptor for the given class and return it as a string.
1438 // Returns null if no location is found.
1439 const char *ciEnv::dyno_name(const InstanceKlass* ik) const {
1440 if (ik->is_hidden()) {
1441 stringStream ss;
1442 if (print_dyno_loc(&ss, ik)) {
1443 ss.print(" ;"); // add terminator
1444 const char* call_site = ss.as_string();
1445 return call_site;
1446 }
1447 }
1448 return nullptr;
1449 }
1450
1451 // Look up the location descriptor for the given class and return it as a string.
1452 // Returns the class name as a fallback if no location is found.
1453 const char *ciEnv::replay_name(ciKlass* k) const {
1454 if (k->is_instance_klass()) {
1455 return replay_name(k->as_instance_klass()->get_instanceKlass());
1456 }
1457 return k->name()->as_quoted_ascii();
1458 }
1459
1460 // Look up the location descriptor for the given class and return it as a string.
1461 // Returns the class name as a fallback if no location is found.
1462 const char *ciEnv::replay_name(const InstanceKlass* ik) const {
1463 const char* name = dyno_name(ik);
1464 if (name != nullptr) {
1465 return name;
1466 }
1467 return ik->name()->as_quoted_ascii();
1468 }
1469
1470 // Process a java.lang.invoke.MemberName object and record any dynamic locations.
1471 void ciEnv::record_member(Thread* thread, oop member) {
1472 assert(java_lang_invoke_MemberName::is_instance(member), "!");
1473 // Check MemberName.clazz field
1474 oop clazz = java_lang_invoke_MemberName::clazz(member);
1475 if (clazz->klass()->is_instance_klass()) {
1476 RecordLocation fp(this, "clazz");
1477 InstanceKlass* ik = InstanceKlass::cast(clazz->klass());
1478 record_best_dyno_loc(ik);
1479 }
1480 // Check MemberName.method.vmtarget field
1481 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(member);
1482 if (vmtarget != nullptr) {
1483 RecordLocation fp2(this, "<vmtarget>");
1484 InstanceKlass* ik = vmtarget->method_holder();
1485 record_best_dyno_loc(ik);
1486 }
1487 }
1488
1489 // Read an object field. Lookup is done by name only.
1490 static inline oop obj_field(oop obj, const char* name) {
1491 return ciReplay::obj_field(obj, name);
1492 }
1493
1494 // Process a java.lang.invoke.LambdaForm object and record any dynamic locations.
1495 void ciEnv::record_lambdaform(Thread* thread, oop form) {
1496 assert(java_lang_invoke_LambdaForm::is_instance(form), "!");
1497
1498 {
1499 // Check LambdaForm.vmentry field
1500 oop member = java_lang_invoke_LambdaForm::vmentry(form);
1501 RecordLocation fp0(this, "vmentry");
1502 record_member(thread, member);
1503 }
1504
1505 // Check LambdaForm.names array
1506 objArrayOop names = (objArrayOop)obj_field(form, "names");
1507 if (names != nullptr) {
1508 RecordLocation lp0(this, "names");
1509 int len = names->length();
1510 for (int i = 0; i < len; ++i) {
1511 oop name = names->obj_at(i);
1512 RecordLocation lp1(this, "%d", i);
1513 // Check LambdaForm.names[i].function field
1514 RecordLocation lp2(this, "function");
1515 oop function = obj_field(name, "function");
1516 if (function != nullptr) {
1517 // Check LambdaForm.names[i].function.member field
1518 oop member = obj_field(function, "member");
1519 if (member != nullptr) {
1520 RecordLocation lp3(this, "member");
1521 record_member(thread, member);
1522 }
1523 // Check LambdaForm.names[i].function.resolvedHandle field
1524 oop mh = obj_field(function, "resolvedHandle");
1525 if (mh != nullptr) {
1526 RecordLocation lp3(this, "resolvedHandle");
1527 record_mh(thread, mh);
1528 }
1529 // Check LambdaForm.names[i].function.invoker field
1530 oop invoker = obj_field(function, "invoker");
1531 if (invoker != nullptr) {
1532 RecordLocation lp3(this, "invoker");
1533 record_mh(thread, invoker);
1534 }
1535 }
1536 }
1537 }
1538 }
1539
1540 // Process a java.lang.invoke.MethodHandle object and record any dynamic locations.
1541 void ciEnv::record_mh(Thread* thread, oop mh) {
1542 {
1543 // Check MethodHandle.form field
1544 oop form = java_lang_invoke_MethodHandle::form(mh);
1545 RecordLocation fp(this, "form");
1546 record_lambdaform(thread, form);
1547 }
1548 // Check DirectMethodHandle.member field
1549 if (java_lang_invoke_DirectMethodHandle::is_instance(mh)) {
1550 oop member = java_lang_invoke_DirectMethodHandle::member(mh);
1551 RecordLocation fp(this, "member");
1552 record_member(thread, member);
1553 } else {
1554 // Check <MethodHandle subclass>.argL<n> fields
1555 // Probably BoundMethodHandle.Species_L*, but we only care if the field exists
1556 char arg_name[] = "argLXX";
1557 int max_arg = 99;
1558 for (int index = 0; index <= max_arg; ++index) {
1559 jio_snprintf(arg_name, sizeof (arg_name), "argL%d", index);
1560 oop arg = obj_field(mh, arg_name);
1561 if (arg != nullptr) {
1562 RecordLocation fp(this, "%s", arg_name);
1563 if (arg->klass()->is_instance_klass()) {
1564 InstanceKlass* ik2 = InstanceKlass::cast(arg->klass());
1565 record_best_dyno_loc(ik2);
1566 record_call_site_obj(thread, arg);
1567 }
1568 } else {
1569 break;
1570 }
1571 }
1572 }
1573 }
1574
1575 // Process an object found at an invokedynamic/invokehandle call site and record any dynamic locations.
1576 // Types currently supported are MethodHandle and CallSite.
1577 // The object is typically the "appendix" object, or Bootstrap Method (BSM) object.
1578 void ciEnv::record_call_site_obj(Thread* thread, oop obj)
1579 {
1580 if (obj != nullptr) {
1581 if (java_lang_invoke_MethodHandle::is_instance(obj)) {
1582 record_mh(thread, obj);
1583 } else if (java_lang_invoke_ConstantCallSite::is_instance(obj)) {
1584 oop target = java_lang_invoke_CallSite::target(obj);
1585 if (target->klass()->is_instance_klass()) {
1586 RecordLocation fp(this, "target");
1587 InstanceKlass* ik = InstanceKlass::cast(target->klass());
1588 record_best_dyno_loc(ik);
1589 }
1590 }
1591 }
1592 }
1593
1594 // Process an adapter Method* found at an invokedynamic/invokehandle call site and record any dynamic locations.
1595 void ciEnv::record_call_site_method(Thread* thread, Method* adapter) {
1596 InstanceKlass* holder = adapter->method_holder();
1597 if (!holder->is_hidden()) {
1598 return;
1599 }
1600 RecordLocation fp(this, "<adapter>");
1601 record_best_dyno_loc(holder);
1602 }
1603
1604 // Process an invokedynamic call site and record any dynamic locations.
1605 void ciEnv::process_invokedynamic(const constantPoolHandle &cp, int indy_index, JavaThread* thread) {
1606 ResolvedIndyEntry* indy_info = cp->resolved_indy_entry_at(indy_index);
1607 if (indy_info->method() != nullptr) {
1608 // process the adapter
1609 Method* adapter = indy_info->method();
1610 record_call_site_method(thread, adapter);
1611 // process the appendix
1612 oop appendix = cp->resolved_reference_from_indy(indy_index);
1613 {
1614 RecordLocation fp(this, "<appendix>");
1615 record_call_site_obj(thread, appendix);
1616 }
1617 // process the BSM
1618 int pool_index = indy_info->constant_pool_index();
1619 BootstrapInfo bootstrap_specifier(cp, pool_index, indy_index);
1620 oop bsm = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), thread);
1621 {
1622 RecordLocation fp(this, "<bsm>");
1623 record_call_site_obj(thread, bsm);
1624 }
1625 }
1626 }
1627
1628 // Process an invokehandle call site and record any dynamic locations.
1629 void ciEnv::process_invokehandle(const constantPoolHandle &cp, int index, JavaThread* thread) {
1630 const int holder_index = cp->klass_ref_index_at(index, Bytecodes::_invokehandle);
1631 if (!cp->tag_at(holder_index).is_klass()) {
1632 return; // not resolved
1633 }
1634 Klass* holder = ConstantPool::klass_at_if_loaded(cp, holder_index);
1635 Symbol* name = cp->name_ref_at(index, Bytecodes::_invokehandle);
1636 if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
1637 ResolvedMethodEntry* method_entry = cp->resolved_method_entry_at(index);
1638 if (method_entry->is_resolved(Bytecodes::_invokehandle)) {
1639 // process the adapter
1640 Method* adapter = method_entry->method();
1641 oop appendix = cp->cache()->appendix_if_resolved(method_entry);
1642 record_call_site_method(thread, adapter);
1643 // process the appendix
1644 {
1645 RecordLocation fp(this, "<appendix>");
1646 record_call_site_obj(thread, appendix);
1647 }
1648 }
1649 }
1650 }
1651
1652 // Search the class hierarchy for dynamic classes reachable through dynamic call sites or
1653 // constant pool entries and record for future lookup.
1654 void ciEnv::find_dynamic_call_sites() {
1655 _dyno_klasses = new (arena()) GrowableArray<const InstanceKlass*>(arena(), 100, 0, nullptr);
1656 _dyno_locs = new (arena()) GrowableArray<const char *>(arena(), 100, 0, nullptr);
1657
1658 // Iterate over the class hierarchy
1659 for (ClassHierarchyIterator iter(vmClasses::Object_klass()); !iter.done(); iter.next()) {
1660 Klass* sub = iter.klass();
1661 if (sub->is_instance_klass()) {
1662 InstanceKlass *isub = InstanceKlass::cast(sub);
1663 InstanceKlass* ik = isub;
1664 if (!ik->is_linked()) {
1665 continue;
1666 }
1667 if (ik->is_hidden()) {
1668 continue;
1669 }
1670 JavaThread* thread = JavaThread::current();
1671 const constantPoolHandle pool(thread, ik->constants());
1672
1673 // Look for invokedynamic/invokehandle call sites
1674 for (int i = 0; i < ik->methods()->length(); ++i) {
1675 Method* m = ik->methods()->at(i);
1676
1677 BytecodeStream bcs(methodHandle(thread, m));
1678 while (!bcs.is_last_bytecode()) {
1679 Bytecodes::Code opcode = bcs.next();
1680 opcode = bcs.raw_code();
1681 switch (opcode) {
1682 case Bytecodes::_invokedynamic:
1683 case Bytecodes::_invokehandle: {
1684 RecordLocation fp(this, "@bci %s %s %s %d",
1685 ik->name()->as_quoted_ascii(),
1686 m->name()->as_quoted_ascii(), m->signature()->as_quoted_ascii(),
1687 bcs.bci());
1688 if (opcode == Bytecodes::_invokedynamic) {
1689 int index = bcs.get_index_u4();
1690 process_invokedynamic(pool, index, thread);
1691 } else {
1692 assert(opcode == Bytecodes::_invokehandle, "new switch label added?");
1693 int cp_cache_index = bcs.get_index_u2();
1694 process_invokehandle(pool, cp_cache_index, thread);
1695 }
1696 break;
1697 }
1698 default:
1699 break;
1700 }
1701 }
1702 }
1703
1704 // Look for MethodHandle constant pool entries
1705 RecordLocation fp(this, "@cpi %s", ik->name()->as_quoted_ascii());
1706 int len = pool->length();
1707 for (int i = 0; i < len; ++i) {
1708 if (pool->tag_at(i).is_method_handle()) {
1709 bool found_it;
1710 oop mh = pool->find_cached_constant_at(i, found_it, thread);
1711 if (mh != nullptr) {
1712 RecordLocation fp(this, "%d", i);
1713 record_mh(thread, mh);
1714 }
1715 }
1716 }
1717 }
1718 }
1719 }
1720
1721 void ciEnv::dump_compile_data(outputStream* out) {
1722 CompileTask* task = this->task();
1723 if (task) {
1724 #ifdef COMPILER2
1725 if (ReplayReduce && compiler_data() != nullptr) {
1726 // Dump C2 "reduced" inlining data.
1727 ((Compile*)compiler_data())->dump_inline_data_reduced(out);
1728 }
1729 #endif
1730 Method* method = task->method();
1731 int entry_bci = task->osr_bci();
1732 int comp_level = task->comp_level();
1733 out->print("compile ");
1734 get_method(method)->dump_name_as_ascii(out);
1735 out->print(" %d %d", entry_bci, comp_level);
1736 if (compiler_data() != nullptr) {
1737 if (is_c2_compile(comp_level)) {
1738 #ifdef COMPILER2
1739 // Dump C2 inlining data.
1740 ((Compile*)compiler_data())->dump_inline_data(out);
1741 #endif
1742 } else if (is_c1_compile(comp_level)) {
1743 #ifdef COMPILER1
1744 // Dump C1 inlining data.
1745 ((Compilation*)compiler_data())->dump_inline_data(out);
1746 #endif
1747 }
1748 }
1749 out->cr();
1750 }
1751 }
1752
1753 // Called from VM error reporter, so be careful.
1754 // Don't safepoint or acquire any locks.
1755 //
1756 void ciEnv::dump_replay_data_helper(outputStream* out) {
1757 NoSafepointVerifier no_safepoint;
1758 ResourceMark rm;
1759
1760 assert(this->task() != nullptr, "task must not be null");
1761
1762 dump_replay_data_version(out);
1763 #if INCLUDE_JVMTI
1764 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1765 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1766 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1767 #endif // INCLUDE_JVMTI
1768
1769 find_dynamic_call_sites();
1770
1771 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1772 out->print_cr("# %d ciObject found", objects->length());
1773
1774 // The very first entry is the InstanceKlass of the root method of the current compilation.
1775 ciInstanceKlass::dump_replay_instanceKlass(out, task()->method()->method_holder());
1776
1777 for (int i = 0; i < objects->length(); i++) {
1778 objects->at(i)->dump_replay_data(out);
1779 }
1780
1781 dump_compile_data(out);
1782 out->flush();
1783 }
1784
1785 // Called from VM error reporter, so be careful.
1786 // Don't safepoint or acquire any locks.
1787 //
1788 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1789 GUARDED_VM_ENTRY(
1790 dump_replay_data_helper(out);
1791 )
1792 }
1793
1794 void ciEnv::dump_replay_data(outputStream* out) {
1795 GUARDED_VM_ENTRY(
1796 MutexLocker ml(Compile_lock);
1797 dump_replay_data_helper(out);
1798 )
1799 }
1800
1801 void ciEnv::dump_replay_data(int compile_id) {
1802 char buffer[64];
1803 int ret = jio_snprintf(buffer, sizeof(buffer), "replay_pid%d_compid%d.log", os::current_process_id(), compile_id);
1804 if (ret > 0) {
1805 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1806 if (fd != -1) {
1807 FILE* replay_data_file = os::fdopen(fd, "w");
1808 if (replay_data_file != nullptr) {
1809 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1810 dump_replay_data(&replay_data_stream);
1811 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1812 } else {
1813 tty->print_cr("# Can't open file to dump replay data.");
1814 close(fd);
1815 }
1816 }
1817 }
1818 }
1819
1820 void ciEnv::dump_inline_data(int compile_id) {
1821 char buffer[64];
1822 int ret = jio_snprintf(buffer, sizeof(buffer), "inline_pid%d_compid%d.log", os::current_process_id(), compile_id);
1823 if (ret > 0) {
1824 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1825 if (fd != -1) {
1826 FILE* inline_data_file = os::fdopen(fd, "w");
1827 if (inline_data_file != nullptr) {
1828 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1829 GUARDED_VM_ENTRY(
1830 MutexLocker ml(Compile_lock);
1831 dump_replay_data_version(&replay_data_stream);
1832 dump_compile_data(&replay_data_stream);
1833 )
1834 replay_data_stream.flush();
1835 tty->print("# Compiler inline data is saved as: ");
1836 tty->print_cr("%s", buffer);
1837 } else {
1838 tty->print_cr("# Can't open file to dump inline data.");
1839 close(fd);
1840 }
1841 }
1842 }
1843 }
1844
1845 void ciEnv::dump_replay_data_version(outputStream* out) {
1846 out->print_cr("version %d", REPLAY_VERSION);
1847 }
1848
1849 bool ciEnv::is_precompile() {
1850 return (task() != nullptr) && task()->is_precompile();
1851 }
1852
1853 bool ciEnv::is_fully_initialized(InstanceKlass* ik) {
1854 assert(is_precompile(), "");
1855 if (task()->method()->method_holder() == ik) {
1856 return true; // FIXME: may be too strong; being_initialized, at least
1857 }
1858 switch (task()->compile_reason()) {
1859 case CompileTask::Reason_Precompile: {
1860 // check init dependencies
1861 MethodTrainingData* mtd = nullptr;
1862 GUARDED_VM_ENTRY(mtd = MethodTrainingData::find(methodHandle(Thread::current(), task()->method())); )
1863 if (mtd != nullptr) {
1864 CompileTrainingData* ctd = mtd->last_toplevel_compile(task()->comp_level());
1865 if (ctd != nullptr) {
1866 for (int i = 0; i < ctd->init_dep_count(); i++) {
1867 KlassTrainingData* ktd = ctd->init_dep(i);
1868 if (ktd->has_holder() && (ktd->holder() == ik)) {
1869 log_trace(precompile)("%d: init_dependency: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name());
1870 return true; // init dependency present
1871 }
1872 }
1873 }
1874 }
1875 return false; // no init dependency
1876 }
1877 case CompileTask::Reason_PrecompileForPreload: {
1878 // FIXME: assumes that all shared classes are initialized
1879 if (ik->is_shared()) {
1880 return true; // class init barriers
1881 }
1882 if (CDSConfig::is_dumping_final_static_archive() && ArchiveBuilder::is_active() &&
1883 ArchiveBuilder::current()->has_been_archived((address)ik)) {
1884 return true; // class init barriers
1885 }
1886 return false;
1887 }
1888 default: fatal("%s", CompileTask::reason_name(task()->compile_reason()));
1889 }
1890 return false;
1891 }
1892
1893 InstanceKlass::ClassState ciEnv::compute_init_state_for_precompiled(InstanceKlass* ik) {
1894 ASSERT_IN_VM;
1895 assert(is_precompile(), "");
1896 ResourceMark rm;
1897 if (is_fully_initialized(ik)) {
1898 log_trace(precompile)("%d: fully_initialized: %s", task()->compile_id(), ik->external_name());
1899 return InstanceKlass::ClassState::fully_initialized;
1900 } else if (MetaspaceObj::is_shared(ik)) {
1901 guarantee(ik->is_loaded(), ""); // FIXME: assumes pre-loading by CDS; ik->is_linked() requires pre-linking
1902 log_trace(precompile)("%d: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name());
1903 return ik->init_state(); // not yet initialized
1904 } else if (CDSConfig::is_dumping_final_static_archive() && ArchiveBuilder::is_active()) {
1905 if (!ArchiveBuilder::current()->has_been_archived((address)ik)) {
1906 fatal("New workflow: should not compile code for unarchived class: %s", ik->external_name());
1907 }
1908 guarantee(ik->is_loaded(), "");
1909 log_trace(precompile)("%d: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name());
1910 return ik->init_state(); // not yet initialized
1911 } else {
1912 // Not present in the archive.
1913 fatal("unloaded: %s", ik->external_name());
1914 // guarantee(SystemDictionaryShared::lookup_init_state(ik) == ik->init_state(), "");
1915 log_trace(precompile)("%d: allocated: %s", task()->compile_id(), ik->external_name());
1916 return InstanceKlass::ClassState::allocated; // not yet linked
1917 }
1918 }