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/aotCacheAccess.hpp"
26 #include "cds/aotConstantPoolResolver.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 (void) 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 // is_loading_aot_code = true implies loading compiled code from AOT code cache
987 bool ciEnv::is_compilation_valid(JavaThread* thread, ciMethod* target, bool install_code, bool is_loading_aot_code, bool preload) {
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 return false;
994 }
995
996 // Change in Jvmti state may invalidate compilation.
997 if (!failing() && jvmti_state_changed()) {
998 record_failure("Jvmti state change invalidated dependencies");
999 }
1000
1001 // Change in DTrace flags may invalidate compilation.
1002 if (!failing() &&
1003 ( (!dtrace_method_probes() && DTraceMethodProbes) ||
1004 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
1005 record_failure("DTrace flags change invalidated dependencies");
1006 }
1007
1008 if (!preload && !failing() && target->needs_clinit_barrier() &&
1009 target->holder()->is_in_error_state()) {
1010 record_failure("method holder is in error state");
1011 }
1012
1013 if (!failing() && !is_loading_aot_code) {
1014 if (log() != nullptr) {
1015 // Log the dependencies which this compilation declares.
1016 dependencies()->log_all_dependencies();
1017 }
1018
1019 // Encode the dependencies now, so we can check them right away.
1020 dependencies()->encode_content_bytes();
1021 }
1022 // Check for {class loads, evolution, breakpoints, ...} during compilation
1023 if (!failing() && install_code) {
1024 // Check for {class loads, evolution, breakpoints, ...} during compilation
1025 validate_compile_task_dependencies(target);
1026 if (failing() && preload) {
1027 ResourceMark rm;
1028 char *method_name = method->name_and_sig_as_C_string();
1029 log_info(aot, codecache)("preload code for '%s' failed dependency check", method_name);
1030 }
1031 }
1032
1033 if (failing()) {
1034 // While not a true deoptimization, it is a preemptive decompile.
1035 MethodData* mdo = method()->method_data();
1036 if (mdo != nullptr && _inc_decompile_count_on_failure) {
1037 mdo->inc_decompile_count();
1038 }
1039 return false;
1040 }
1041 return true;
1042 }
1043
1044 void ciEnv::make_code_usable(JavaThread* thread, ciMethod* target, bool preload, int entry_bci, AOTCodeEntry* aot_code_entry, nmethod* nm) {
1045 methodHandle method(thread, target->get_Method());
1046
1047 if (entry_bci == InvocationEntryBci) {
1048 if (TieredCompilation) {
1049 // If there is an old version we're done with it
1050 nmethod* old = method->code();
1051 if (TraceMethodReplacement && old != nullptr) {
1052 ResourceMark rm;
1053 char *method_name = method->name_and_sig_as_C_string();
1054 tty->print_cr("Replacing method %s", method_name);
1055 }
1056 if (old != nullptr) {
1057 old->make_not_used();
1058 }
1059 }
1060
1061 LogTarget(Info, nmethod, install) lt;
1062 if (lt.is_enabled()) {
1063 ResourceMark rm;
1064 char *method_name = method->name_and_sig_as_C_string();
1065 lt.print("Installing method (L%d) %s id=%d aot=%s%s%u",
1066 task()->comp_level(), method_name, compile_id(),
1067 task()->is_aot_load() ? "A" : "", preload ? "P" : "",
1068 (aot_code_entry != nullptr ? aot_code_entry->offset() : 0));
1069 }
1070 // Allow the code to be executed
1071 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
1072 if (nm->make_in_use()) {
1073 #ifdef ASSERT
1074 BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
1075 if (bs_nm != nullptr && bs_nm->supports_entry_barrier(nm)) {
1076 if (!bs_nm->is_armed(nm)) {
1077 log_info(init)("nmethod %d %d not armed", nm->compile_id(), nm->comp_level());
1078 }
1079 }
1080 #endif // ASSERT
1081 if (preload) {
1082 nm->set_preloaded(true);
1083 method->set_preload_code(nm);
1084 }
1085 if (!preload || target->holder()->is_linked()) {
1086 method->set_code(method, nm);
1087 }
1088 }
1089 } else {
1090 LogTarget(Info, nmethod, install) lt;
1091 if (lt.is_enabled()) {
1092 assert(aot_code_entry == nullptr && !task()->is_aot_load(), "OSR nmethods are not AOT compiled");
1093 ResourceMark rm;
1094 char *method_name = method->name_and_sig_as_C_string();
1095 lt.print("Installing osr method (L%d) %s @ %d id=%u",
1096 task()->comp_level(), method_name, entry_bci, compile_id());
1097 }
1098 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
1099 if (nm->make_in_use()) {
1100 method->method_holder()->add_osr_nmethod(nm);
1101 }
1102 }
1103 }
1104
1105 nmethod* ciEnv::register_aot_method(JavaThread* thread,
1106 ciMethod* target,
1107 AbstractCompiler* compiler,
1108 nmethod* archived_nm,
1109 address reloc_data,
1110 GrowableArray<Handle>& oop_list,
1111 GrowableArray<Metadata*>& metadata_list,
1112 ImmutableOopMapSet* oopmaps,
1113 address immutable_data,
1114 GrowableArray<Handle>& reloc_imm_oop_list,
1115 GrowableArray<Metadata*>& reloc_imm_metadata_list,
1116 AOTCodeReader* aot_code_reader)
1117 {
1118 AOTCodeEntry* aot_code_entry = task()->aot_code_entry();
1119 assert(aot_code_entry != nullptr, "must be");
1120 nmethod* nm = nullptr;
1121 {
1122 methodHandle method(thread, target->get_Method());
1123 bool preload = task()->preload(); // Code is preloaded before Java method execution
1124
1125 // Check if memory should be freed before allocation
1126 CodeCache::gc_on_allocation();
1127
1128 // To prevent compile queue updates.
1129 MutexLocker locker(thread, task()->compile_queue()->lock());
1130
1131 // Prevent InstanceKlass::add_to_hierarchy from running
1132 // and invalidating our dependencies until we install this method.
1133 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
1134 MutexLocker ml(Compile_lock);
1135 NoSafepointVerifier nsv;
1136
1137 // AOTCode entry indicates this shared code was marked invalid while it was loaded.
1138 if (aot_code_entry->not_entrant()) {
1139 return nullptr;
1140 }
1141
1142 if (!is_compilation_valid(thread, target, true /*install_code*/, true, preload)) {
1143 return nullptr;
1144 }
1145
1146 nm = nmethod::new_nmethod(archived_nm,
1147 method,
1148 compiler,
1149 compile_id(),
1150 reloc_data,
1151 oop_list,
1152 metadata_list,
1153 oopmaps,
1154 immutable_data,
1155 reloc_imm_oop_list,
1156 reloc_imm_metadata_list,
1157 aot_code_reader);
1158
1159 if (nm != nullptr) {
1160 aot_code_entry->set_loaded();
1161 make_code_usable(thread, target, preload, InvocationEntryBci, aot_code_entry, nm);
1162 }
1163 }
1164
1165 NoSafepointVerifier nsv;
1166 if (nm != nullptr) {
1167 // Compilation succeeded, post what we know about it
1168 nm->post_compiled_method(task());
1169 task()->set_num_inlined_bytecodes(num_inlined_bytecodes());
1170 } else {
1171 // The CodeCache is full.
1172 record_failure("code cache is full");
1173 }
1174 return nm;
1175 // safepoints are allowed again
1176 }
1177
1178 // ------------------------------------------------------------------
1179 // ciEnv::register_method
1180 void ciEnv::register_method(ciMethod* target,
1181 int entry_bci,
1182 CodeOffsets* offsets,
1183 int orig_pc_offset,
1184 CodeBuffer* code_buffer,
1185 int frame_words,
1186 OopMapSet* oop_map_set,
1187 ExceptionHandlerTable* handler_table,
1188 ImplicitExceptionTable* inc_table,
1189 AbstractCompiler* compiler,
1190 bool has_clinit_barriers,
1191 bool for_preload,
1192 bool has_unsafe_access,
1193 bool has_wide_vectors,
1194 bool has_monitors,
1195 bool has_scoped_access,
1196 int immediate_oops_patched,
1197 bool install_code) {
1198 VM_ENTRY_MARK;
1199 nmethod* nm = nullptr;
1200 {
1201 methodHandle method(THREAD, target->get_Method());
1202
1203 // Check if memory should be freed before allocation
1204 CodeCache::gc_on_allocation();
1205
1206 // To prevent compile queue updates.
1207 MutexLocker locker(THREAD, task()->compile_queue()->lock());
1208
1209 // Prevent InstanceKlass::add_to_hierarchy from running
1210 // and invalidating our dependencies until we install this method.
1211 // No safepoints are allowed. Otherwise, class redefinition can occur in between.
1212 MutexLocker ml(Compile_lock);
1213 NoSafepointVerifier nsv;
1214
1215 if (!is_compilation_valid(THREAD, target, install_code, /*aot_code_entry*/ false, /*preload*/ false)) {
1216 code_buffer->free_blob();
1217 return;
1218 }
1219
1220 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry");
1221 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry");
1222
1223 if (install_code) {
1224 nm = nmethod::new_nmethod(method,
1225 compile_id(),
1226 entry_bci,
1227 offsets,
1228 orig_pc_offset,
1229 debug_info(), dependencies(), code_buffer,
1230 frame_words, oop_map_set,
1231 handler_table, inc_table,
1232 compiler, CompLevel(task()->comp_level()));
1233 }
1234 // Free codeBlobs
1235 code_buffer->free_blob();
1236
1237 if (nm != nullptr) {
1238 nm->set_has_unsafe_access(has_unsafe_access);
1239 nm->set_has_wide_vectors(has_wide_vectors);
1240 nm->set_has_monitors(has_monitors);
1241 nm->set_has_scoped_access(has_scoped_access);
1242 nm->set_preloaded(false);
1243 nm->set_has_clinit_barriers(has_clinit_barriers);
1244 assert(!method->is_synchronized() || nm->has_monitors(), "");
1245
1246 if (task()->is_precompile()) {
1247 AOTCodeEntry* aot_code_entry = AOTCodeCache::store_nmethod(nm, compiler, for_preload);
1248 if (aot_code_entry != nullptr) {
1249 aot_code_entry->set_inlined_bytecodes(num_inlined_bytecodes());
1250 }
1251 }
1252 make_code_usable(THREAD, target, /* preload */ false, entry_bci, /* aot_code_entry */ nullptr, nm);
1253 }
1254 }
1255
1256 NoSafepointVerifier nsv;
1257 if (nm != nullptr) {
1258 // Compilation succeeded, post what we know about it
1259 nm->post_compiled_method(task());
1260 task()->set_num_inlined_bytecodes(num_inlined_bytecodes());
1261 } else if (install_code) {
1262 // The CodeCache is full.
1263 record_failure("code cache is full");
1264 } else {
1265 task()->set_num_inlined_bytecodes(num_inlined_bytecodes());
1266 }
1267
1268 // safepoints are allowed again
1269 }
1270
1271 // ------------------------------------------------------------------
1272 // ciEnv::find_system_klass
1273 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1274 VM_ENTRY_MARK;
1275 return get_klass_by_name_impl(nullptr, constantPoolHandle(), klass_name, false);
1276 }
1277
1278 // ------------------------------------------------------------------
1279 // ciEnv::comp_level
1280 int ciEnv::comp_level() {
1281 if (task() == nullptr) return CompilationPolicy::highest_compile_level();
1282 return task()->comp_level();
1283 }
1284
1285 // ------------------------------------------------------------------
1286 // ciEnv::compile_id
1287 int ciEnv::compile_id() {
1288 if (task() == nullptr) return 0;
1289 return task()->compile_id();
1290 }
1291
1292 // ------------------------------------------------------------------
1293 // ciEnv::notice_inlined_method()
1294 void ciEnv::notice_inlined_method(ciMethod* method) {
1295 _num_inlined_bytecodes += method->code_size_for_inlining();
1296 CompileTrainingData* ctd = task()->training_data();
1297 if (ctd != nullptr) {
1298 GUARDED_VM_ENTRY({
1299 methodHandle mh(Thread::current(), method->get_Method());
1300 ctd->notice_inlined_method(task(), mh);
1301 });
1302 }
1303 }
1304
1305 // ------------------------------------------------------------------
1306 // ciEnv::num_inlined_bytecodes()
1307 int ciEnv::num_inlined_bytecodes() const {
1308 return _num_inlined_bytecodes;
1309 }
1310
1311 // ------------------------------------------------------------------
1312 // ciEnv::record_failure()
1313 void ciEnv::record_failure(const char* reason) {
1314 // record the bailout for hserr envlog
1315 if (reason != nullptr) {
1316 if (CompilationLog::log() != nullptr) {
1317 CompilerThread* thread = CompilerThread::current();
1318 CompileTask* task = thread->task();
1319 CompilationLog::log()->log_failure(thread, task, reason, nullptr);
1320 }
1321 }
1322
1323 if (_failure_reason.get() == nullptr) {
1324 // Record the first failure reason.
1325 _failure_reason.set(reason);
1326 }
1327 }
1328
1329 void ciEnv::report_failure(const char* reason) {
1330 EventCompilationFailure event;
1331 if (event.should_commit()) {
1332 CompilerEvent::CompilationFailureEvent::post(event, compile_id(), reason);
1333 }
1334 }
1335
1336 // ------------------------------------------------------------------
1337 // ciEnv::record_method_not_compilable()
1338 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1339 int new_compilable =
1340 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1341
1342 // Only note transitions to a worse state
1343 if (new_compilable > _compilable) {
1344 if (log() != nullptr) {
1345 if (all_tiers) {
1346 log()->elem("method_not_compilable");
1347 } else {
1348 log()->elem("method_not_compilable_at_tier level='%d'",
1349 current()->task()->comp_level());
1350 }
1351 }
1352 _compilable = new_compilable;
1353
1354 // Reset failure reason; this one is more important.
1355 _failure_reason.clear();
1356 record_failure(reason);
1357 }
1358 }
1359
1360 // ------------------------------------------------------------------
1361 // ciEnv::record_out_of_memory_failure()
1362 void ciEnv::record_out_of_memory_failure() {
1363 // If memory is low, we stop compiling methods.
1364 record_method_not_compilable("out of memory");
1365 }
1366
1367 ciInstance* ciEnv::unloaded_ciinstance() {
1368 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1369 }
1370
1371 // ------------------------------------------------------------------
1372 // Replay support
1373
1374
1375 // Lookup location descriptor for the class, if any.
1376 // Returns false if not found.
1377 bool ciEnv::dyno_loc(const InstanceKlass* ik, const char *&loc) const {
1378 bool found = false;
1379 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1380 if (!found) {
1381 return false;
1382 }
1383 loc = _dyno_locs->at(pos);
1384 return found;
1385 }
1386
1387 // Associate the current location descriptor with the given class and record for later lookup.
1388 void ciEnv::set_dyno_loc(const InstanceKlass* ik) {
1389 const char *loc = os::strdup(_dyno_name);
1390 bool found = false;
1391 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1392 if (found) {
1393 _dyno_locs->at_put(pos, loc);
1394 } else {
1395 _dyno_klasses->insert_before(pos, ik);
1396 _dyno_locs->insert_before(pos, loc);
1397 }
1398 }
1399
1400 // Associate the current location descriptor with the given class and record for later lookup.
1401 // If it turns out that there are multiple locations for the given class, that conflict should
1402 // be handled here. Currently we choose the first location found.
1403 void ciEnv::record_best_dyno_loc(const InstanceKlass* ik) {
1404 if (!ik->is_hidden()) {
1405 return;
1406 }
1407 const char *loc0;
1408 if (!dyno_loc(ik, loc0)) {
1409 set_dyno_loc(ik);
1410 }
1411 }
1412
1413 // Look up the location descriptor for the given class and print it to the output stream.
1414 bool ciEnv::print_dyno_loc(outputStream* out, const InstanceKlass* ik) const {
1415 const char *loc;
1416 if (dyno_loc(ik, loc)) {
1417 out->print("%s", loc);
1418 return true;
1419 } else {
1420 return false;
1421 }
1422 }
1423
1424 // Look up the location descriptor for the given class and return it as a string.
1425 // Returns null if no location is found.
1426 const char *ciEnv::dyno_name(const InstanceKlass* ik) const {
1427 if (ik->is_hidden()) {
1428 stringStream ss;
1429 if (print_dyno_loc(&ss, ik)) {
1430 ss.print(" ;"); // add terminator
1431 const char* call_site = ss.as_string();
1432 return call_site;
1433 }
1434 }
1435 return nullptr;
1436 }
1437
1438 // Look up the location descriptor for the given class and return it as a string.
1439 // Returns the class name as a fallback if no location is found.
1440 const char *ciEnv::replay_name(ciKlass* k) const {
1441 if (k->is_instance_klass()) {
1442 return replay_name(k->as_instance_klass()->get_instanceKlass());
1443 }
1444 return k->name()->as_quoted_ascii();
1445 }
1446
1447 // Look up the location descriptor for the given class and return it as a string.
1448 // Returns the class name as a fallback if no location is found.
1449 const char *ciEnv::replay_name(const InstanceKlass* ik) const {
1450 const char* name = dyno_name(ik);
1451 if (name != nullptr) {
1452 return name;
1453 }
1454 return ik->name()->as_quoted_ascii();
1455 }
1456
1457 // Process a java.lang.invoke.MemberName object and record any dynamic locations.
1458 void ciEnv::record_member(Thread* thread, oop member) {
1459 assert(java_lang_invoke_MemberName::is_instance(member), "!");
1460 // Check MemberName.clazz field
1461 oop clazz = java_lang_invoke_MemberName::clazz(member);
1462 if (clazz->klass()->is_instance_klass()) {
1463 RecordLocation fp(this, "clazz");
1464 InstanceKlass* ik = InstanceKlass::cast(clazz->klass());
1465 record_best_dyno_loc(ik);
1466 }
1467 // Check MemberName.method.vmtarget field
1468 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(member);
1469 if (vmtarget != nullptr) {
1470 RecordLocation fp2(this, "<vmtarget>");
1471 InstanceKlass* ik = vmtarget->method_holder();
1472 record_best_dyno_loc(ik);
1473 }
1474 }
1475
1476 // Read an object field. Lookup is done by name only.
1477 static inline oop obj_field(oop obj, const char* name) {
1478 return ciReplay::obj_field(obj, name);
1479 }
1480
1481 // Process a java.lang.invoke.LambdaForm object and record any dynamic locations.
1482 void ciEnv::record_lambdaform(Thread* thread, oop form) {
1483 assert(java_lang_invoke_LambdaForm::is_instance(form), "!");
1484
1485 {
1486 // Check LambdaForm.vmentry field
1487 oop member = java_lang_invoke_LambdaForm::vmentry(form);
1488 RecordLocation fp0(this, "vmentry");
1489 record_member(thread, member);
1490 }
1491
1492 // Check LambdaForm.names array
1493 objArrayOop names = (objArrayOop)obj_field(form, "names");
1494 if (names != nullptr) {
1495 RecordLocation lp0(this, "names");
1496 int len = names->length();
1497 for (int i = 0; i < len; ++i) {
1498 oop name = names->obj_at(i);
1499 RecordLocation lp1(this, "%d", i);
1500 // Check LambdaForm.names[i].function field
1501 RecordLocation lp2(this, "function");
1502 oop function = obj_field(name, "function");
1503 if (function != nullptr) {
1504 // Check LambdaForm.names[i].function.member field
1505 oop member = obj_field(function, "member");
1506 if (member != nullptr) {
1507 RecordLocation lp3(this, "member");
1508 record_member(thread, member);
1509 }
1510 // Check LambdaForm.names[i].function.resolvedHandle field
1511 oop mh = obj_field(function, "resolvedHandle");
1512 if (mh != nullptr) {
1513 RecordLocation lp3(this, "resolvedHandle");
1514 record_mh(thread, mh);
1515 }
1516 // Check LambdaForm.names[i].function.invoker field
1517 oop invoker = obj_field(function, "invoker");
1518 if (invoker != nullptr) {
1519 RecordLocation lp3(this, "invoker");
1520 record_mh(thread, invoker);
1521 }
1522 }
1523 }
1524 }
1525 }
1526
1527 // Process a java.lang.invoke.MethodHandle object and record any dynamic locations.
1528 void ciEnv::record_mh(Thread* thread, oop mh) {
1529 {
1530 // Check MethodHandle.form field
1531 oop form = java_lang_invoke_MethodHandle::form(mh);
1532 RecordLocation fp(this, "form");
1533 record_lambdaform(thread, form);
1534 }
1535 // Check DirectMethodHandle.member field
1536 if (java_lang_invoke_DirectMethodHandle::is_instance(mh)) {
1537 oop member = java_lang_invoke_DirectMethodHandle::member(mh);
1538 RecordLocation fp(this, "member");
1539 record_member(thread, member);
1540 } else {
1541 // Check <MethodHandle subclass>.argL<n> fields
1542 // Probably BoundMethodHandle.Species_L*, but we only care if the field exists
1543 char arg_name[] = "argLXX";
1544 int max_arg = 99;
1545 for (int index = 0; index <= max_arg; ++index) {
1546 jio_snprintf(arg_name, sizeof (arg_name), "argL%d", index);
1547 oop arg = obj_field(mh, arg_name);
1548 if (arg != nullptr) {
1549 RecordLocation fp(this, "%s", arg_name);
1550 if (arg->klass()->is_instance_klass()) {
1551 InstanceKlass* ik2 = InstanceKlass::cast(arg->klass());
1552 record_best_dyno_loc(ik2);
1553 record_call_site_obj(thread, arg);
1554 }
1555 } else {
1556 break;
1557 }
1558 }
1559 }
1560 }
1561
1562 // Process an object found at an invokedynamic/invokehandle call site and record any dynamic locations.
1563 // Types currently supported are MethodHandle and CallSite.
1564 // The object is typically the "appendix" object, or Bootstrap Method (BSM) object.
1565 void ciEnv::record_call_site_obj(Thread* thread, oop obj)
1566 {
1567 if (obj != nullptr) {
1568 if (java_lang_invoke_MethodHandle::is_instance(obj)) {
1569 record_mh(thread, obj);
1570 } else if (java_lang_invoke_ConstantCallSite::is_instance(obj)) {
1571 oop target = java_lang_invoke_CallSite::target(obj);
1572 if (target->klass()->is_instance_klass()) {
1573 RecordLocation fp(this, "target");
1574 InstanceKlass* ik = InstanceKlass::cast(target->klass());
1575 record_best_dyno_loc(ik);
1576 }
1577 }
1578 }
1579 }
1580
1581 // Process an adapter Method* found at an invokedynamic/invokehandle call site and record any dynamic locations.
1582 void ciEnv::record_call_site_method(Thread* thread, Method* adapter) {
1583 InstanceKlass* holder = adapter->method_holder();
1584 if (!holder->is_hidden()) {
1585 return;
1586 }
1587 RecordLocation fp(this, "<adapter>");
1588 record_best_dyno_loc(holder);
1589 }
1590
1591 // Process an invokedynamic call site and record any dynamic locations.
1592 void ciEnv::process_invokedynamic(const constantPoolHandle &cp, int indy_index, JavaThread* thread) {
1593 ResolvedIndyEntry* indy_info = cp->resolved_indy_entry_at(indy_index);
1594 if (indy_info->method() != nullptr) {
1595 // process the adapter
1596 Method* adapter = indy_info->method();
1597 record_call_site_method(thread, adapter);
1598 // process the appendix
1599 oop appendix = cp->resolved_reference_from_indy(indy_index);
1600 {
1601 RecordLocation fp(this, "<appendix>");
1602 record_call_site_obj(thread, appendix);
1603 }
1604 // process the BSM
1605 int pool_index = indy_info->constant_pool_index();
1606 BootstrapInfo bootstrap_specifier(cp, pool_index, indy_index);
1607 oop bsm = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), thread);
1608 {
1609 RecordLocation fp(this, "<bsm>");
1610 record_call_site_obj(thread, bsm);
1611 }
1612 }
1613 }
1614
1615 // Process an invokehandle call site and record any dynamic locations.
1616 void ciEnv::process_invokehandle(const constantPoolHandle &cp, int index, JavaThread* thread) {
1617 const int holder_index = cp->klass_ref_index_at(index, Bytecodes::_invokehandle);
1618 if (!cp->tag_at(holder_index).is_klass()) {
1619 return; // not resolved
1620 }
1621 Klass* holder = ConstantPool::klass_at_if_loaded(cp, holder_index);
1622 Symbol* name = cp->name_ref_at(index, Bytecodes::_invokehandle);
1623 if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
1624 ResolvedMethodEntry* method_entry = cp->resolved_method_entry_at(index);
1625 if (method_entry->is_resolved(Bytecodes::_invokehandle)) {
1626 // process the adapter
1627 Method* adapter = method_entry->method();
1628 oop appendix = cp->cache()->appendix_if_resolved(method_entry);
1629 record_call_site_method(thread, adapter);
1630 // process the appendix
1631 {
1632 RecordLocation fp(this, "<appendix>");
1633 record_call_site_obj(thread, appendix);
1634 }
1635 }
1636 }
1637 }
1638
1639 // Search the class hierarchy for dynamic classes reachable through dynamic call sites or
1640 // constant pool entries and record for future lookup.
1641 void ciEnv::find_dynamic_call_sites() {
1642 _dyno_klasses = new (arena()) GrowableArray<const InstanceKlass*>(arena(), 100, 0, nullptr);
1643 _dyno_locs = new (arena()) GrowableArray<const char *>(arena(), 100, 0, nullptr);
1644
1645 // Iterate over the class hierarchy
1646 for (ClassHierarchyIterator iter(vmClasses::Object_klass()); !iter.done(); iter.next()) {
1647 Klass* sub = iter.klass();
1648 if (sub->is_instance_klass()) {
1649 InstanceKlass *isub = InstanceKlass::cast(sub);
1650 InstanceKlass* ik = isub;
1651 if (!ik->is_linked()) {
1652 continue;
1653 }
1654 if (ik->is_hidden()) {
1655 continue;
1656 }
1657 JavaThread* thread = JavaThread::current();
1658 const constantPoolHandle pool(thread, ik->constants());
1659
1660 // Look for invokedynamic/invokehandle call sites
1661 for (int i = 0; i < ik->methods()->length(); ++i) {
1662 Method* m = ik->methods()->at(i);
1663
1664 BytecodeStream bcs(methodHandle(thread, m));
1665 while (!bcs.is_last_bytecode()) {
1666 Bytecodes::Code opcode = bcs.next();
1667 opcode = bcs.raw_code();
1668 switch (opcode) {
1669 case Bytecodes::_invokedynamic:
1670 case Bytecodes::_invokehandle: {
1671 RecordLocation fp(this, "@bci %s %s %s %d",
1672 ik->name()->as_quoted_ascii(),
1673 m->name()->as_quoted_ascii(), m->signature()->as_quoted_ascii(),
1674 bcs.bci());
1675 if (opcode == Bytecodes::_invokedynamic) {
1676 int index = bcs.get_index_u4();
1677 process_invokedynamic(pool, index, thread);
1678 } else {
1679 assert(opcode == Bytecodes::_invokehandle, "new switch label added?");
1680 int cp_cache_index = bcs.get_index_u2();
1681 process_invokehandle(pool, cp_cache_index, thread);
1682 }
1683 break;
1684 }
1685 default:
1686 break;
1687 }
1688 }
1689 }
1690
1691 // Look for MethodHandle constant pool entries
1692 RecordLocation fp(this, "@cpi %s", ik->name()->as_quoted_ascii());
1693 int len = pool->length();
1694 for (int i = 0; i < len; ++i) {
1695 if (pool->tag_at(i).is_method_handle()) {
1696 bool found_it;
1697 oop mh = pool->find_cached_constant_at(i, found_it, thread);
1698 if (mh != nullptr) {
1699 RecordLocation fp(this, "%d", i);
1700 record_mh(thread, mh);
1701 }
1702 }
1703 }
1704 }
1705 }
1706 }
1707
1708 void ciEnv::dump_compile_data(outputStream* out) {
1709 CompileTask* task = this->task();
1710 if (task) {
1711 #ifdef COMPILER2
1712 if (ReplayReduce && compiler_data() != nullptr) {
1713 // Dump C2 "reduced" inlining data.
1714 ((Compile*)compiler_data())->dump_inline_data_reduced(out);
1715 }
1716 #endif
1717 Method* method = task->method();
1718 int entry_bci = task->osr_bci();
1719 int comp_level = task->comp_level();
1720 out->print("compile ");
1721 get_method(method)->dump_name_as_ascii(out);
1722 out->print(" %d %d", entry_bci, comp_level);
1723 if (compiler_data() != nullptr) {
1724 if (is_c2_compile(comp_level)) {
1725 #ifdef COMPILER2
1726 // Dump C2 inlining data.
1727 ((Compile*)compiler_data())->dump_inline_data(out);
1728 #endif
1729 } else if (is_c1_compile(comp_level)) {
1730 #ifdef COMPILER1
1731 // Dump C1 inlining data.
1732 ((Compilation*)compiler_data())->dump_inline_data(out);
1733 #endif
1734 }
1735 }
1736 out->cr();
1737 }
1738 }
1739
1740 // Called from VM error reporter, so be careful.
1741 // Don't safepoint or acquire any locks.
1742 //
1743 void ciEnv::dump_replay_data_helper(outputStream* out) {
1744 NoSafepointVerifier no_safepoint;
1745 ResourceMark rm;
1746
1747 assert(this->task() != nullptr, "task must not be null");
1748
1749 dump_replay_data_version(out);
1750 #if INCLUDE_JVMTI
1751 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1752 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1753 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1754 #endif // INCLUDE_JVMTI
1755
1756 find_dynamic_call_sites();
1757
1758 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1759 out->print_cr("# %d ciObject found", objects->length());
1760
1761 // The very first entry is the InstanceKlass of the root method of the current compilation.
1762 ciInstanceKlass::dump_replay_instanceKlass(out, task()->method()->method_holder());
1763
1764 for (int i = 0; i < objects->length(); i++) {
1765 objects->at(i)->dump_replay_data(out);
1766 }
1767
1768 dump_compile_data(out);
1769 out->flush();
1770 }
1771
1772 // Called from VM error reporter, so be careful.
1773 // Don't safepoint or acquire any locks.
1774 //
1775 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1776 GUARDED_VM_ENTRY(
1777 dump_replay_data_helper(out);
1778 )
1779 }
1780
1781 void ciEnv::dump_replay_data(outputStream* out) {
1782 GUARDED_VM_ENTRY(
1783 MutexLocker ml(Compile_lock);
1784 dump_replay_data_helper(out);
1785 )
1786 }
1787
1788 void ciEnv::dump_replay_data(int compile_id) {
1789 char buffer[64];
1790 int ret = jio_snprintf(buffer, sizeof(buffer), "replay_pid%d_compid%d.log", os::current_process_id(), compile_id);
1791 if (ret > 0) {
1792 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1793 if (fd != -1) {
1794 FILE* replay_data_file = os::fdopen(fd, "w");
1795 if (replay_data_file != nullptr) {
1796 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1797 dump_replay_data(&replay_data_stream);
1798 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1799 } else {
1800 tty->print_cr("# Can't open file to dump replay data.");
1801 close(fd);
1802 }
1803 }
1804 }
1805 }
1806
1807 void ciEnv::dump_inline_data(int compile_id) {
1808 char buffer[64];
1809 int ret = jio_snprintf(buffer, sizeof(buffer), "inline_pid%d_compid%d.log", os::current_process_id(), compile_id);
1810 if (ret > 0) {
1811 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1812 if (fd != -1) {
1813 FILE* inline_data_file = os::fdopen(fd, "w");
1814 if (inline_data_file != nullptr) {
1815 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1816 GUARDED_VM_ENTRY(
1817 MutexLocker ml(Compile_lock);
1818 dump_replay_data_version(&replay_data_stream);
1819 dump_compile_data(&replay_data_stream);
1820 )
1821 replay_data_stream.flush();
1822 tty->print("# Compiler inline data is saved as: ");
1823 tty->print_cr("%s", buffer);
1824 } else {
1825 tty->print_cr("# Can't open file to dump inline data.");
1826 close(fd);
1827 }
1828 }
1829 }
1830 }
1831
1832 void ciEnv::dump_replay_data_version(outputStream* out) {
1833 out->print_cr("version %d", REPLAY_VERSION);
1834 }
1835
1836 bool ciEnv::is_precompile() {
1837 return (task() != nullptr) && task()->is_precompile();
1838 }
1839
1840 InstanceKlass::ClassState ciEnv::compute_init_state_for_precompiled(InstanceKlass* ik) {
1841 ASSERT_IN_VM;
1842 assert(is_precompile(), "should be called only in assembly phase");
1843 assert(!ik->is_in_error_state(), "there should not be any probelm with this klass");
1844 ResourceMark rm;
1845
1846 if (!AOTCacheAccess::can_generate_aot_code_for(ik)) {
1847 log_debug(precompile)("%d: klass (%s) %s is not archived", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name());
1848 // Skip this class
1849 return InstanceKlass::ClassState::initialization_error;
1850 }
1851 if (task()->method()->method_holder() == ik) {
1852 if (task()->method()->is_static_initializer()) { // Happens with -Xcomp
1853 return InstanceKlass::ClassState::being_initialized;
1854 } else {
1855 return InstanceKlass::ClassState::fully_initialized;
1856 }
1857 }
1858
1859 switch (task()->compile_reason()) {
1860 case CompileTask::Reason_Precompile: {
1861 // check init dependencies
1862 MethodTrainingData* mtd = nullptr;
1863 GUARDED_VM_ENTRY(mtd = MethodTrainingData::find(methodHandle(Thread::current(), task()->method())); )
1864 if (mtd != nullptr) {
1865 CompileTrainingData* ctd = mtd->last_toplevel_compile(task()->comp_level());
1866 if (ctd != nullptr) {
1867 for (int i = 0; i < ctd->init_dep_count(); i++) {
1868 KlassTrainingData* ktd = ctd->init_dep(i);
1869 if (ktd->has_holder() && (ktd->holder() == ik)) {
1870 log_trace(precompile)("%d: init_dependency: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name());
1871 return InstanceKlass::ClassState::fully_initialized;; // init dependency present
1872 }
1873 }
1874 }
1875 }
1876 // Class may be not present during TD creation for this method.
1877 // It could happen when profiled data for inlined method
1878 // was updated after this method was compiled during training.
1879 break;
1880 }
1881 case CompileTask::Reason_PrecompileForPreload: {
1882 // Preload AOT code does not depend on Training Data,
1883 // it has class init barriers to initialize class by
1884 // going into interpreter or directly calling runtime.
1885 return InstanceKlass::ClassState::fully_initialized;
1886 }
1887 default: fatal("%s", CompileTask::reason_name(task()->compile_reason()));
1888 }
1889 // Skip this class
1890 return InstanceKlass::ClassState::initialization_error;
1891 }