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/archiveBuilder.hpp"
26 #include "cds/cdsConfig.hpp"
27 #include "ci/ciConstant.hpp"
28 #include "ci/ciEnv.hpp"
29 #include "ci/ciField.hpp"
30 #include "ci/ciInstance.hpp"
31 #include "ci/ciInstanceKlass.hpp"
32 #include "ci/ciMethod.hpp"
33 #include "ci/ciNullObject.hpp"
34 #include "ci/ciReplay.hpp"
35 #include "ci/ciSymbols.hpp"
36 #include "ci/ciUtilities.inline.hpp"
37 #include "classfile/javaClasses.hpp"
38 #include "classfile/javaClasses.inline.hpp"
39 #include "classfile/systemDictionary.hpp"
40 #include "classfile/vmClasses.hpp"
41 #include "classfile/vmSymbols.hpp"
42 #include "code/codeCache.hpp"
43 #include "code/scopeDesc.hpp"
44 #include "code/SCCache.hpp"
45 #include "compiler/compilationLog.hpp"
46 #include "compiler/compilationPolicy.hpp"
47 #include "compiler/compileBroker.hpp"
48 #include "compiler/compilerEvent.hpp"
49 #include "compiler/compileLog.hpp"
50 #include "compiler/compileTask.hpp"
51 #include "compiler/disassembler.hpp"
52 #include "gc/shared/collectedHeap.inline.hpp"
53 #include "gc/shared/barrierSetNMethod.hpp"
54 #include "interpreter/bytecodeStream.hpp"
55 #include "interpreter/linkResolver.hpp"
56 #include "jfr/jfrEvents.hpp"
57 #include "jvm.h"
58 #include "logging/log.hpp"
59 #include "memory/allocation.inline.hpp"
60 #include "memory/oopFactory.hpp"
61 #include "memory/resourceArea.hpp"
62 #include "memory/universe.hpp"
63 #include "oops/constantPool.inline.hpp"
64 #include "oops/cpCache.inline.hpp"
65 #include "oops/method.inline.hpp"
66 #include "oops/methodData.hpp"
67 #include "oops/objArrayKlass.hpp"
68 #include "oops/objArrayOop.inline.hpp"
69 #include "oops/oop.inline.hpp"
70 #include "oops/resolvedIndyEntry.hpp"
71 #include "oops/symbolHandle.hpp"
72 #include "oops/trainingData.hpp"
73 #include "prims/jvmtiExport.hpp"
74 #include "prims/methodHandles.hpp"
75 #include "runtime/fieldDescriptor.inline.hpp"
76 #include "runtime/flags/flagSetting.hpp"
77 #include "runtime/handles.inline.hpp"
78 #include "runtime/init.hpp"
79 #include "runtime/javaThread.hpp"
80 #include "runtime/jniHandles.inline.hpp"
81 #include "runtime/reflection.hpp"
82 #include "runtime/safepointVerifiers.hpp"
83 #include "runtime/sharedRuntime.hpp"
84 #include "utilities/dtrace.hpp"
85 #include "utilities/macros.hpp"
86 #ifdef COMPILER1
87 #include "c1/c1_Runtime1.hpp"
88 #endif
89 #ifdef COMPILER2
90 #include "opto/runtime.hpp"
91 #endif
92
93 // ciEnv
94 //
95 // This class is the top level broker for requests from the compiler
96 // to the VM.
97
98 ciObject* ciEnv::_null_object_instance;
99
100 #define VM_CLASS_DEFN(name, ignore_s) ciInstanceKlass* ciEnv::_##name = nullptr;
101 VM_CLASSES_DO(VM_CLASS_DEFN)
102 #undef VM_CLASS_DEFN
103
104 ciSymbol* ciEnv::_unloaded_cisymbol = nullptr;
105 ciInstanceKlass* ciEnv::_unloaded_ciinstance_klass = nullptr;
106 ciObjArrayKlass* ciEnv::_unloaded_ciobjarrayklass = nullptr;
107
108 #ifndef PRODUCT
109 static bool firstEnv = true;
110 #endif /* PRODUCT */
111
112 // ------------------------------------------------------------------
113 // ciEnv::ciEnv
114 ciEnv::ciEnv(CompileTask* task)
115 : _ciEnv_arena(mtCompiler, Arena::Tag::tag_cienv) {
116 VM_ENTRY_MARK;
117
118 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
119 thread->set_env(this);
120 assert(ciEnv::current() == this, "sanity");
121
122 _oop_recorder = nullptr;
123 _debug_info = nullptr;
124 _dependencies = nullptr;
125 _inc_decompile_count_on_failure = true;
126 _compilable = MethodCompilable;
127 _break_at_compile = false;
128 _compiler_data = nullptr;
129 #ifndef PRODUCT
130 assert(!firstEnv, "not initialized properly");
131 #endif /* !PRODUCT */
132
133 _num_inlined_bytecodes = 0;
134 assert(task == nullptr || thread->task() == task, "sanity");
135 if (task != nullptr) {
136 task->mark_started(os::elapsed_counter());
137 }
138 _task = task;
139 _log = nullptr;
140
141 // Temporary buffer for creating symbols and such.
142 _name_buffer = nullptr;
143 _name_buffer_len = 0;
144
145 _arena = &_ciEnv_arena;
146 _factory = new (_arena) ciObjectFactory(_arena, 128);
147
148 // Preload commonly referenced system ciObjects.
149
150 // During VM initialization, these instances have not yet been created.
151 // Assertions ensure that these instances are not accessed before
152 // their initialization.
153
154 assert(Universe::is_fully_initialized(), "should be complete");
155
156 oop o = Universe::null_ptr_exception_instance();
157 assert(o != nullptr, "should have been initialized");
158 _NullPointerException_instance = get_object(o)->as_instance();
159 o = Universe::arithmetic_exception_instance();
160 assert(o != nullptr, "should have been initialized");
161 _ArithmeticException_instance = get_object(o)->as_instance();
162 o = Universe::array_index_out_of_bounds_exception_instance();
163 assert(o != nullptr, "should have been initialized");
164 _ArrayIndexOutOfBoundsException_instance = get_object(o)->as_instance();
165 o = Universe::array_store_exception_instance();
166 assert(o != nullptr, "should have been initialized");
167 _ArrayStoreException_instance = get_object(o)->as_instance();
168 o = Universe::class_cast_exception_instance();
169 assert(o != nullptr, "should have been initialized");
170 _ClassCastException_instance = get_object(o)->as_instance();
171
172 _the_null_string = nullptr;
173 _the_min_jint_string = nullptr;
174
175 _jvmti_redefinition_count = 0;
176 _jvmti_can_hotswap_or_post_breakpoint = false;
177 _jvmti_can_access_local_variables = false;
178 _jvmti_can_post_on_exceptions = false;
179 _jvmti_can_pop_frame = false;
180
181 _scc_clinit_barriers_entry = nullptr;
182
183 _dyno_klasses = nullptr;
184 _dyno_locs = nullptr;
185 _dyno_name[0] = '\0';
186 }
187
188 // Record components of a location descriptor string. Components are appended by the constructor and
189 // removed by the destructor, like a stack, so scope matters. These location descriptors are used to
190 // locate dynamic classes, and terminate at a Method* or oop field associated with dynamic/hidden class.
191 //
192 // Example use:
193 //
194 // {
195 // RecordLocation fp(this, "field1");
196 // // location: "field1"
197 // { RecordLocation fp(this, " field2"); // location: "field1 field2" }
198 // // location: "field1"
199 // { RecordLocation fp(this, " field3"); // location: "field1 field3" }
200 // // location: "field1"
201 // }
202 // // location: ""
203 //
204 // Examples of actual locations
205 // @bci compiler/ciReplay/CiReplayBase$TestMain test (I)V 1 <appendix> argL0 ;
206 // // resolve invokedynamic at bci 1 of TestMain.test, then read field "argL0" from appendix
207 // @bci compiler/ciReplay/CiReplayBase$TestMain main ([Ljava/lang/String;)V 0 <appendix> form vmentry <vmtarget> ;
208 // // resolve invokedynamic at bci 0 of TestMain.main, then read field "form.vmentry.method.vmtarget" from appendix
209 // @cpi compiler/ciReplay/CiReplayBase$TestMain 56 form vmentry <vmtarget> ;
210 // // resolve MethodHandle at cpi 56 of TestMain, then read field "vmentry.method.vmtarget" from resolved MethodHandle
211 class RecordLocation {
212 private:
213 char* end;
214
215 ATTRIBUTE_PRINTF(3, 4)
216 void push(ciEnv* ci, const char* fmt, ...) {
217 va_list args;
218 va_start(args, fmt);
219 push_va(ci, fmt, args);
220 va_end(args);
221 }
222
223 public:
224 ATTRIBUTE_PRINTF(3, 0)
225 void push_va(ciEnv* ci, const char* fmt, va_list args) {
226 char *e = ci->_dyno_name + strlen(ci->_dyno_name);
227 char *m = ci->_dyno_name + ARRAY_SIZE(ci->_dyno_name) - 1;
228 os::vsnprintf(e, m - e, fmt, args);
229 assert(strlen(ci->_dyno_name) < (ARRAY_SIZE(ci->_dyno_name) - 1), "overflow");
230 }
231
232 // append a new component
233 ATTRIBUTE_PRINTF(3, 4)
234 RecordLocation(ciEnv* ci, const char* fmt, ...) {
235 end = ci->_dyno_name + strlen(ci->_dyno_name);
236 va_list args;
237 va_start(args, fmt);
238 push(ci, " ");
239 push_va(ci, fmt, args);
240 va_end(args);
241 }
242
243 // reset to previous state
244 ~RecordLocation() {
245 *end = '\0';
246 }
247 };
248
249 ciEnv::ciEnv(Arena* arena) : _ciEnv_arena(mtCompiler, Arena::Tag::tag_cienv) {
250 ASSERT_IN_VM;
251
252 // Set up ciEnv::current immediately, for the sake of ciObjectFactory, etc.
253 CompilerThread* current_thread = CompilerThread::current();
254 assert(current_thread->env() == nullptr, "must be");
255 current_thread->set_env(this);
256 assert(ciEnv::current() == this, "sanity");
257
258 _oop_recorder = nullptr;
259 _debug_info = nullptr;
260 _dependencies = nullptr;
261 _inc_decompile_count_on_failure = true;
262 _compilable = MethodCompilable_never;
263 _break_at_compile = false;
264 _compiler_data = nullptr;
265 #ifndef PRODUCT
266 assert(firstEnv, "must be first");
267 firstEnv = false;
268 #endif /* !PRODUCT */
269
270 _num_inlined_bytecodes = 0;
271 _task = nullptr;
272 _log = nullptr;
273
274 // Temporary buffer for creating symbols and such.
275 _name_buffer = nullptr;
276 _name_buffer_len = 0;
277
278 _arena = arena;
279 _factory = new (_arena) ciObjectFactory(_arena, 128);
280
281 // Preload commonly referenced system ciObjects.
282
283 // During VM initialization, these instances have not yet been created.
284 // Assertions ensure that these instances are not accessed before
285 // their initialization.
286
287 assert(Universe::is_fully_initialized(), "must be");
288
289 _NullPointerException_instance = nullptr;
290 _ArithmeticException_instance = nullptr;
291 _ArrayIndexOutOfBoundsException_instance = nullptr;
292 _ArrayStoreException_instance = nullptr;
293 _ClassCastException_instance = nullptr;
294 _the_null_string = nullptr;
295 _the_min_jint_string = nullptr;
296
297 _jvmti_redefinition_count = 0;
298 _jvmti_can_hotswap_or_post_breakpoint = false;
299 _jvmti_can_access_local_variables = false;
300 _jvmti_can_post_on_exceptions = false;
301 _jvmti_can_pop_frame = false;
302
303 _scc_clinit_barriers_entry = nullptr;
304
305 _dyno_klasses = nullptr;
306 _dyno_locs = nullptr;
307 }
308
309 ciEnv::~ciEnv() {
310 GUARDED_VM_ENTRY(
311 CompilerThread* current_thread = CompilerThread::current();
312 _factory->remove_symbols();
313 // Need safepoint to clear the env on the thread. RedefineClasses might
314 // be reading it.
315 current_thread->set_env(nullptr);
316 )
317 }
318
319 // ------------------------------------------------------------------
320 // Cache Jvmti state
321 bool ciEnv::cache_jvmti_state() {
322 VM_ENTRY_MARK;
323 // Get Jvmti capabilities under lock to get consistent values.
324 MutexLocker mu(JvmtiThreadState_lock);
325 _jvmti_redefinition_count = JvmtiExport::redefinition_count();
326 _jvmti_can_hotswap_or_post_breakpoint = JvmtiExport::can_hotswap_or_post_breakpoint();
327 _jvmti_can_access_local_variables = JvmtiExport::can_access_local_variables();
328 _jvmti_can_post_on_exceptions = JvmtiExport::can_post_on_exceptions();
329 _jvmti_can_pop_frame = JvmtiExport::can_pop_frame();
330 _jvmti_can_get_owned_monitor_info = JvmtiExport::can_get_owned_monitor_info();
331 _jvmti_can_walk_any_space = JvmtiExport::can_walk_any_space();
332 return _task != nullptr && _task->method()->is_old();
333 }
334
335 bool ciEnv::jvmti_state_changed() const {
336 // Some classes were redefined
337 if (_jvmti_redefinition_count != JvmtiExport::redefinition_count()) {
338 return true;
339 }
340
341 if (!_jvmti_can_access_local_variables &&
342 JvmtiExport::can_access_local_variables()) {
343 return true;
344 }
345 if (!_jvmti_can_hotswap_or_post_breakpoint &&
346 JvmtiExport::can_hotswap_or_post_breakpoint()) {
347 return true;
348 }
349 if (!_jvmti_can_post_on_exceptions &&
350 JvmtiExport::can_post_on_exceptions()) {
351 return true;
352 }
353 if (!_jvmti_can_pop_frame &&
354 JvmtiExport::can_pop_frame()) {
355 return true;
356 }
357 if (!_jvmti_can_get_owned_monitor_info &&
358 JvmtiExport::can_get_owned_monitor_info()) {
359 return true;
360 }
361 if (!_jvmti_can_walk_any_space &&
362 JvmtiExport::can_walk_any_space()) {
363 return true;
364 }
365
366 return false;
367 }
368
369 // ------------------------------------------------------------------
370 // Cache DTrace flags
371 void ciEnv::cache_dtrace_flags() {
372 // Need lock?
373 _dtrace_method_probes = DTraceMethodProbes;
374 _dtrace_alloc_probes = DTraceAllocProbes;
375 }
376
377 ciInstanceKlass* ciEnv::get_box_klass_for_primitive_type(BasicType type) {
378 switch (type) {
379 case T_BOOLEAN: return Boolean_klass();
380 case T_BYTE : return Byte_klass();
381 case T_CHAR : return Character_klass();
382 case T_SHORT : return Short_klass();
383 case T_INT : return Integer_klass();
384 case T_LONG : return Long_klass();
385 case T_FLOAT : return Float_klass();
386 case T_DOUBLE : return Double_klass();
387
388 default:
389 assert(false, "not a primitive: %s", type2name(type));
390 return nullptr;
391 }
392 }
393
394 ciInstance* ciEnv::the_null_string() {
395 if (_the_null_string == nullptr) {
396 VM_ENTRY_MARK;
397 _the_null_string = get_object(Universe::the_null_string())->as_instance();
398 }
399 return _the_null_string;
400 }
401
402 ciInstance* ciEnv::the_min_jint_string() {
403 if (_the_min_jint_string == nullptr) {
404 VM_ENTRY_MARK;
405 _the_min_jint_string = get_object(Universe::the_min_jint_string())->as_instance();
406 }
407 return _the_min_jint_string;
408 }
409
410 // ------------------------------------------------------------------
411 // ciEnv::get_method_from_handle
412 ciMethod* ciEnv::get_method_from_handle(Method* method) {
413 VM_ENTRY_MARK;
414 return get_metadata(method)->as_method();
415 }
416
417 // ------------------------------------------------------------------
418 // ciEnv::check_klass_accessiblity
419 //
420 // Note: the logic of this method should mirror the logic of
421 // ConstantPool::verify_constant_pool_resolve.
422 bool ciEnv::check_klass_accessibility(ciKlass* accessing_klass,
423 Klass* resolved_klass) {
424 if (accessing_klass == nullptr || !accessing_klass->is_loaded()) {
425 return true;
426 }
427 if (accessing_klass->is_obj_array_klass()) {
428 accessing_klass = accessing_klass->as_obj_array_klass()->base_element_klass();
429 }
430 if (!accessing_klass->is_instance_klass()) {
431 return true;
432 }
433
434 if (resolved_klass->is_objArray_klass()) {
435 // Find the element klass, if this is an array.
436 resolved_klass = ObjArrayKlass::cast(resolved_klass)->bottom_klass();
437 }
438 if (resolved_klass->is_instance_klass()) {
439 return (Reflection::verify_class_access(accessing_klass->get_Klass(),
440 InstanceKlass::cast(resolved_klass),
441 true) == Reflection::ACCESS_OK);
442 }
443 return true;
444 }
445
446 // ------------------------------------------------------------------
447 // ciEnv::get_klass_by_name_impl
448 ciKlass* ciEnv::get_klass_by_name_impl(ciKlass* accessing_klass,
449 const constantPoolHandle& cpool,
450 ciSymbol* name,
451 bool require_local) {
452 ASSERT_IN_VM;
453 Thread* current = Thread::current();
454
455 // Now we need to check the SystemDictionary
456 Symbol* sym = name->get_symbol();
457 if (Signature::has_envelope(sym)) {
458 // This is a name from a signature. Strip off the trimmings.
459 // Call recursive to keep scope of strippedsym.
460 TempNewSymbol strippedsym = Signature::strip_envelope(sym);
461 ciSymbol* strippedname = get_symbol(strippedsym);
462 return get_klass_by_name_impl(accessing_klass, cpool, strippedname, require_local);
463 }
464
465 // Check for prior unloaded klass. The SystemDictionary's answers
466 // can vary over time but the compiler needs consistency.
467 ciKlass* unloaded_klass = check_get_unloaded_klass(accessing_klass, name);
468 if (unloaded_klass != nullptr) {
469 if (require_local) return nullptr;
470 return unloaded_klass;
471 }
472
473 Handle loader;
474 if (accessing_klass != nullptr) {
475 loader = Handle(current, accessing_klass->loader());
476 }
477
478 Klass* found_klass = require_local ?
479 SystemDictionary::find_instance_or_array_klass(current, sym, loader) :
480 SystemDictionary::find_constrained_instance_or_array_klass(current, sym, loader);
481
482 // If we fail to find an array klass, look again for its element type.
483 // The element type may be available either locally or via constraints.
484 // In either case, if we can find the element type in the system dictionary,
485 // we must build an array type around it. The CI requires array klasses
486 // to be loaded if their element klasses are loaded, except when memory
487 // is exhausted.
488 if (Signature::is_array(sym) &&
489 (sym->char_at(1) == JVM_SIGNATURE_ARRAY || sym->char_at(1) == JVM_SIGNATURE_CLASS)) {
490 // We have an unloaded array.
491 // Build it on the fly if the element class exists.
492 SignatureStream ss(sym, false);
493 ss.skip_array_prefix(1);
494 // Get element ciKlass recursively.
495 ciKlass* elem_klass =
496 get_klass_by_name_impl(accessing_klass,
497 cpool,
498 get_symbol(ss.as_symbol()),
499 require_local);
500 if (elem_klass != nullptr && elem_klass->is_loaded()) {
501 // Now make an array for it
502 return ciObjArrayKlass::make_impl(elem_klass);
503 }
504 }
505
506 if (found_klass == nullptr && !cpool.is_null() && cpool->has_preresolution()) {
507 // Look inside the constant pool for pre-resolved class entries.
508 for (int i = cpool->length() - 1; i >= 1; i--) {
509 if (cpool->tag_at(i).is_klass()) {
510 Klass* kls = cpool->resolved_klass_at(i);
511 if (kls->name() == sym) {
512 found_klass = kls;
513 break;
514 }
515 }
516 }
517 }
518
519 if (found_klass != nullptr) {
520 // Found it. Build a CI handle.
521 return get_klass(found_klass);
522 }
523
524 if (require_local) return nullptr;
525
526 // Not yet loaded into the VM, or not governed by loader constraints.
527 // Make a CI representative for it.
528 return get_unloaded_klass(accessing_klass, name);
529 }
530
531 // ------------------------------------------------------------------
532 // ciEnv::get_klass_by_name
533 ciKlass* ciEnv::get_klass_by_name(ciKlass* accessing_klass,
534 ciSymbol* klass_name,
535 bool require_local) {
536 GUARDED_VM_ENTRY(return get_klass_by_name_impl(accessing_klass,
537 constantPoolHandle(),
538 klass_name,
539 require_local);)
540 }
541
542 // ------------------------------------------------------------------
543 // ciEnv::get_klass_by_index_impl
544 //
545 // Implementation of get_klass_by_index.
546 ciKlass* ciEnv::get_klass_by_index_impl(const constantPoolHandle& cpool,
547 int index,
548 bool& is_accessible,
549 ciInstanceKlass* accessor) {
550 Klass* klass = nullptr;
551 Symbol* klass_name = nullptr;
552
553 if (cpool->tag_at(index).is_symbol()) {
554 klass_name = cpool->symbol_at(index);
555 } else {
556 // Check if it's resolved if it's not a symbol constant pool entry.
557 klass = ConstantPool::klass_at_if_loaded(cpool, index);
558 // Try to look it up by name.
559 if (klass == nullptr) {
560 klass_name = cpool->klass_name_at(index);
561 }
562 }
563
564 if (klass == nullptr) {
565 // Not found in constant pool. Use the name to do the lookup.
566 ciKlass* k = get_klass_by_name_impl(accessor,
567 cpool,
568 get_symbol(klass_name),
569 false);
570 // Calculate accessibility the hard way.
571 if (!k->is_loaded()) {
572 is_accessible = false;
573 } else if (k->loader() != accessor->loader() &&
574 get_klass_by_name_impl(accessor, cpool, k->name(), true) == nullptr) {
575 // Loaded only remotely. Not linked yet.
576 is_accessible = false;
577 } else {
578 // Linked locally, and we must also check public/private, etc.
579 is_accessible = check_klass_accessibility(accessor, k->get_Klass());
580 }
581 return k;
582 }
583
584 // Check for prior unloaded klass. The SystemDictionary's answers
585 // can vary over time but the compiler needs consistency.
586 ciSymbol* name = get_symbol(klass->name());
587 ciKlass* unloaded_klass = check_get_unloaded_klass(accessor, name);
588 if (unloaded_klass != nullptr) {
589 is_accessible = false;
590 return unloaded_klass;
591 }
592
593 // It is known to be accessible, since it was found in the constant pool.
594 ciKlass* ciKlass = get_klass(klass);
595 is_accessible = true;
596 if (ReplayCompiles && ciKlass == _unloaded_ciinstance_klass) {
597 // Klass was unresolved at replay dump time and therefore not accessible.
598 is_accessible = false;
599 }
600 return ciKlass;
601 }
602
603 // ------------------------------------------------------------------
604 // ciEnv::get_klass_by_index
605 //
606 // Get a klass from the constant pool.
607 ciKlass* ciEnv::get_klass_by_index(const constantPoolHandle& cpool,
608 int index,
609 bool& is_accessible,
610 ciInstanceKlass* accessor) {
611 GUARDED_VM_ENTRY(return get_klass_by_index_impl(cpool, index, is_accessible, accessor);)
612 }
613
614 // ------------------------------------------------------------------
615 // ciEnv::unbox_primitive_value
616 //
617 // Unbox a primitive and return it as a ciConstant.
618 ciConstant ciEnv::unbox_primitive_value(ciObject* cibox, BasicType expected_bt) {
619 jvalue value;
620 BasicType bt = java_lang_boxing_object::get_value(cibox->get_oop(), &value);
621 if (bt != expected_bt && expected_bt != T_ILLEGAL) {
622 assert(false, "type mismatch: %s vs %s", type2name(expected_bt), cibox->klass()->name()->as_klass_external_name());
623 return ciConstant();
624 }
625 switch (bt) {
626 case T_BOOLEAN: return ciConstant(bt, value.z);
627 case T_BYTE: return ciConstant(bt, value.b);
628 case T_SHORT: return ciConstant(bt, value.s);
629 case T_CHAR: return ciConstant(bt, value.c);
630 case T_INT: return ciConstant(bt, value.i);
631 case T_LONG: return ciConstant(value.j);
632 case T_FLOAT: return ciConstant(value.f);
633 case T_DOUBLE: return ciConstant(value.d);
634
635 default:
636 assert(false, "not a primitive type: %s", type2name(bt));
637 return ciConstant();
638 }
639 }
640
641 // ------------------------------------------------------------------
642 // ciEnv::get_resolved_constant
643 //
644 ciConstant ciEnv::get_resolved_constant(const constantPoolHandle& cpool, int obj_index) {
645 assert(obj_index >= 0, "");
646 oop obj = cpool->resolved_reference_at(obj_index);
647 if (obj == nullptr) {
648 // Unresolved constant. It is resolved when the corresponding slot contains a non-null reference.
649 // Null constant is represented as a sentinel (non-null) value.
650 return ciConstant();
651 } else if (obj == Universe::the_null_sentinel()) {
652 return ciConstant(T_OBJECT, get_object(nullptr));
653 } else {
654 ciObject* ciobj = get_object(obj);
655 if (ciobj->is_array()) {
656 return ciConstant(T_ARRAY, ciobj);
657 } else {
658 int cp_index = cpool->object_to_cp_index(obj_index);
659 BasicType bt = cpool->basic_type_for_constant_at(cp_index);
660 if (is_java_primitive(bt)) {
661 assert(cpool->tag_at(cp_index).is_dynamic_constant(), "sanity");
662 return unbox_primitive_value(ciobj, bt);
663 } else {
664 assert(ciobj->is_instance(), "should be an instance");
665 return ciConstant(T_OBJECT, ciobj);
666 }
667 }
668 }
669 }
670
671 // ------------------------------------------------------------------
672 // ciEnv::get_constant_by_index_impl
673 //
674 // Implementation of get_constant_by_index().
675 ciConstant ciEnv::get_constant_by_index_impl(const constantPoolHandle& cpool,
676 int index, int obj_index,
677 ciInstanceKlass* accessor) {
678 if (obj_index >= 0) {
679 ciConstant con = get_resolved_constant(cpool, obj_index);
680 if (con.should_be_constant()) {
681 return con;
682 }
683 }
684 constantTag tag = cpool->tag_at(index);
685 if (tag.is_int()) {
686 return ciConstant(T_INT, (jint)cpool->int_at(index));
687 } else if (tag.is_long()) {
688 return ciConstant((jlong)cpool->long_at(index));
689 } else if (tag.is_float()) {
690 return ciConstant((jfloat)cpool->float_at(index));
691 } else if (tag.is_double()) {
692 return ciConstant((jdouble)cpool->double_at(index));
693 } else if (tag.is_string()) {
694 EXCEPTION_CONTEXT;
695 assert(obj_index >= 0, "should have an object index");
696 oop string = cpool->string_at(index, obj_index, THREAD);
697 if (HAS_PENDING_EXCEPTION) {
698 CLEAR_PENDING_EXCEPTION;
699 record_out_of_memory_failure();
700 return ciConstant();
701 }
702 ciInstance* constant = get_object(string)->as_instance();
703 return ciConstant(T_OBJECT, constant);
704 } else if (tag.is_unresolved_klass_in_error()) {
705 return ciConstant(T_OBJECT, get_unloaded_klass_mirror(nullptr));
706 } else if (tag.is_klass() || tag.is_unresolved_klass()) {
707 bool will_link;
708 ciKlass* klass = get_klass_by_index_impl(cpool, index, will_link, accessor);
709 ciInstance* mirror = (will_link ? klass->java_mirror() : get_unloaded_klass_mirror(klass));
710 return ciConstant(T_OBJECT, mirror);
711 } else if (tag.is_method_type() || tag.is_method_type_in_error()) {
712 // must execute Java code to link this CP entry into cache[i].f1
713 assert(obj_index >= 0, "should have an object index");
714 ciSymbol* signature = get_symbol(cpool->method_type_signature_at(index));
715 ciObject* ciobj = get_unloaded_method_type_constant(signature);
716 return ciConstant(T_OBJECT, ciobj);
717 } else if (tag.is_method_handle() || tag.is_method_handle_in_error()) {
718 // must execute Java code to link this CP entry into cache[i].f1
719 assert(obj_index >= 0, "should have an object index");
720 bool ignore_will_link;
721 int ref_kind = cpool->method_handle_ref_kind_at(index);
722 int callee_index = cpool->method_handle_klass_index_at(index);
723 ciKlass* callee = get_klass_by_index_impl(cpool, callee_index, ignore_will_link, accessor);
724 ciSymbol* name = get_symbol(cpool->method_handle_name_ref_at(index));
725 ciSymbol* signature = get_symbol(cpool->method_handle_signature_ref_at(index));
726 ciObject* ciobj = get_unloaded_method_handle_constant(callee, name, signature, ref_kind);
727 return ciConstant(T_OBJECT, ciobj);
728 } else if (tag.is_dynamic_constant() || tag.is_dynamic_constant_in_error()) {
729 assert(obj_index >= 0, "should have an object index");
730 return ciConstant(T_OBJECT, unloaded_ciinstance()); // unresolved dynamic constant
731 } else {
732 assert(false, "unknown tag: %d (%s)", tag.value(), tag.internal_name());
733 return ciConstant();
734 }
735 }
736
737 // ------------------------------------------------------------------
738 // ciEnv::get_constant_by_index
739 //
740 // Pull a constant out of the constant pool. How appropriate.
741 //
742 // Implementation note: this query is currently in no way cached.
743 ciConstant ciEnv::get_constant_by_index(const constantPoolHandle& cpool,
744 int pool_index, int cache_index,
745 ciInstanceKlass* accessor) {
746 GUARDED_VM_ENTRY(return get_constant_by_index_impl(cpool, pool_index, cache_index, accessor);)
747 }
748
749 // ------------------------------------------------------------------
750 // ciEnv::get_field_by_index_impl
751 //
752 // Implementation of get_field_by_index.
753 //
754 // Implementation note: the results of field lookups are cached
755 // in the accessor klass.
756 ciField* ciEnv::get_field_by_index_impl(ciInstanceKlass* accessor,
757 int index, Bytecodes::Code bc) {
758 ciConstantPoolCache* cache = accessor->field_cache();
759 if (cache == nullptr) {
760 ciField* field = new (arena()) ciField(accessor, index, bc);
761 return field;
762 } else {
763 ciField* field = (ciField*)cache->get(index);
764 if (field == nullptr) {
765 field = new (arena()) ciField(accessor, index, bc);
766 cache->insert(index, field);
767 }
768 return field;
769 }
770 }
771
772 // ------------------------------------------------------------------
773 // ciEnv::get_field_by_index
774 //
775 // Get a field by index from a klass's constant pool.
776 ciField* ciEnv::get_field_by_index(ciInstanceKlass* accessor,
777 int index, Bytecodes::Code bc) {
778 GUARDED_VM_ENTRY(return get_field_by_index_impl(accessor, index, bc);)
779 }
780
781 // ------------------------------------------------------------------
782 // ciEnv::lookup_method
783 //
784 // Perform an appropriate method lookup based on accessor, holder,
785 // name, signature, and bytecode.
786 Method* ciEnv::lookup_method(ciInstanceKlass* accessor,
787 ciKlass* holder,
788 Symbol* name,
789 Symbol* sig,
790 Bytecodes::Code bc,
791 constantTag tag) {
792 InstanceKlass* accessor_klass = accessor->get_instanceKlass();
793 Klass* holder_klass = holder->get_Klass();
794
795 // Accessibility checks are performed in ciEnv::get_method_by_index_impl.
796 assert(check_klass_accessibility(accessor, holder_klass), "holder not accessible");
797
798 LinkInfo link_info(holder_klass, name, sig, accessor_klass,
799 LinkInfo::AccessCheck::required,
800 LinkInfo::LoaderConstraintCheck::required,
801 tag);
802 switch (bc) {
803 case Bytecodes::_invokestatic:
804 return LinkResolver::resolve_static_call_or_null(link_info);
805 case Bytecodes::_invokespecial:
806 return LinkResolver::resolve_special_call_or_null(link_info);
807 case Bytecodes::_invokeinterface:
808 return LinkResolver::linktime_resolve_interface_method_or_null(link_info);
809 case Bytecodes::_invokevirtual:
810 return LinkResolver::linktime_resolve_virtual_method_or_null(link_info);
811 default:
812 fatal("Unhandled bytecode: %s", Bytecodes::name(bc));
813 return nullptr; // silence compiler warnings
814 }
815 }
816
817
818 // ------------------------------------------------------------------
819 // ciEnv::get_method_by_index_impl
820 ciMethod* ciEnv::get_method_by_index_impl(const constantPoolHandle& cpool,
821 int index, Bytecodes::Code bc,
822 ciInstanceKlass* accessor) {
823 assert(cpool.not_null(), "need constant pool");
824 assert(accessor != nullptr, "need origin of access");
825 if (bc == Bytecodes::_invokedynamic) {
826 // FIXME: code generation could allow for null (unlinked) call site
827 // The call site could be made patchable as follows:
828 // Load the appendix argument from the constant pool.
829 // Test the appendix argument and jump to a known deopt routine if it is null.
830 // Jump through a patchable call site, which is initially a deopt routine.
831 // Patch the call site to the nmethod entry point of the static compiled lambda form.
832 // As with other two-component call sites, both values must be independently verified.
833 assert(index < cpool->cache()->resolved_indy_entries_length(), "impossible");
834 Method* adapter = cpool->resolved_indy_entry_at(index)->method();
835 // Resolved if the adapter is non null.
836 if (adapter != nullptr) {
837 return get_method(adapter);
838 }
839
840 // Fake a method that is equivalent to a declared method.
841 ciInstanceKlass* holder = get_instance_klass(vmClasses::MethodHandle_klass());
842 ciSymbol* name = ciSymbols::invokeBasic_name();
843 ciSymbol* signature = get_symbol(cpool->signature_ref_at(index, bc));
844 return get_unloaded_method(holder, name, signature, accessor);
845 } else {
846 const int holder_index = cpool->klass_ref_index_at(index, bc);
847 bool holder_is_accessible;
848 ciKlass* holder = get_klass_by_index_impl(cpool, holder_index, holder_is_accessible, accessor);
849
850 // Get the method's name and signature.
851 Symbol* name_sym = cpool->name_ref_at(index, bc);
852 Symbol* sig_sym = cpool->signature_ref_at(index, bc);
853
854 if (cpool->has_preresolution()
855 || ((holder == ciEnv::MethodHandle_klass() || holder == ciEnv::VarHandle_klass()) &&
856 MethodHandles::is_signature_polymorphic_name(holder->get_Klass(), name_sym))) {
857 // Short-circuit lookups for JSR 292-related call sites.
858 // That is, do not rely only on name-based lookups, because they may fail
859 // if the names are not resolvable in the boot class loader (7056328).
860 switch (bc) {
861 case Bytecodes::_invokevirtual:
862 case Bytecodes::_invokeinterface:
863 case Bytecodes::_invokespecial:
864 case Bytecodes::_invokestatic:
865 {
866 Method* m = ConstantPool::method_at_if_loaded(cpool, index);
867 if (m != nullptr) {
868 return get_method(m);
869 }
870 }
871 break;
872 default:
873 break;
874 }
875 }
876
877 if (holder_is_accessible) { // Our declared holder is loaded.
878 constantTag tag = cpool->tag_ref_at(index, bc);
879 assert(accessor->get_instanceKlass() == cpool->pool_holder(), "not the pool holder?");
880 Method* m = lookup_method(accessor, holder, name_sym, sig_sym, bc, tag);
881 if (m != nullptr) {
882 ciInstanceKlass* cik = get_instance_klass(m->method_holder());
883 if ((bc == Bytecodes::_invokestatic && cik->is_not_initialized()) || !cik->is_loaded()) {
884 m = nullptr;
885 }
886 }
887 if (m != nullptr && ReplayCompiles && !ciReplay::is_loaded(m)) {
888 m = nullptr;
889 }
890 if (m != nullptr) {
891 // We found the method.
892 return get_method(m);
893 }
894 }
895
896 // Either the declared holder was not loaded, or the method could
897 // not be found. Create a dummy ciMethod to represent the failed
898 // lookup.
899 ciSymbol* name = get_symbol(name_sym);
900 ciSymbol* signature = get_symbol(sig_sym);
901 return get_unloaded_method(holder, name, signature, accessor);
902 }
903 }
904
905
906 // ------------------------------------------------------------------
907 // ciEnv::get_instance_klass_for_declared_method_holder
908 ciInstanceKlass* ciEnv::get_instance_klass_for_declared_method_holder(ciKlass* method_holder) {
909 // For the case of <array>.clone(), the method holder can be a ciArrayKlass
910 // instead of a ciInstanceKlass. For that case simply pretend that the
911 // declared holder is Object.clone since that's where the call will bottom out.
912 // A more correct fix would trickle out through many interfaces in CI,
913 // requiring ciInstanceKlass* to become ciKlass* and many more places would
914 // require checks to make sure the expected type was found. Given that this
915 // only occurs for clone() the more extensive fix seems like overkill so
916 // instead we simply smear the array type into Object.
917 guarantee(method_holder != nullptr, "no method holder");
918 if (method_holder->is_instance_klass()) {
919 return method_holder->as_instance_klass();
920 } else if (method_holder->is_array_klass()) {
921 return current()->Object_klass();
922 } else {
923 ShouldNotReachHere();
924 }
925 return nullptr;
926 }
927
928
929 // ------------------------------------------------------------------
930 // ciEnv::get_method_by_index
931 ciMethod* ciEnv::get_method_by_index(const constantPoolHandle& cpool,
932 int index, Bytecodes::Code bc,
933 ciInstanceKlass* accessor) {
934 GUARDED_VM_ENTRY(return get_method_by_index_impl(cpool, index, bc, accessor);)
935 }
936
937
938 // ------------------------------------------------------------------
939 // ciEnv::name_buffer
940 char *ciEnv::name_buffer(int req_len) {
941 if (_name_buffer_len < req_len) {
942 if (_name_buffer == nullptr) {
943 _name_buffer = (char*)arena()->Amalloc(sizeof(char)*req_len);
944 _name_buffer_len = req_len;
945 } else {
946 _name_buffer =
947 (char*)arena()->Arealloc(_name_buffer, _name_buffer_len, req_len);
948 _name_buffer_len = req_len;
949 }
950 }
951 return _name_buffer;
952 }
953
954 // ------------------------------------------------------------------
955 // ciEnv::is_in_vm
956 bool ciEnv::is_in_vm() {
957 return JavaThread::current()->thread_state() == _thread_in_vm;
958 }
959
960 // ------------------------------------------------------------------
961 // ciEnv::validate_compile_task_dependencies
962 //
963 // Check for changes during compilation (e.g. class loads, evolution,
964 // breakpoints, call site invalidation).
965 void ciEnv::validate_compile_task_dependencies(ciMethod* target) {
966 assert(!failing(), "should not call this when failing");
967
968 Dependencies::DepType result = dependencies()->validate_dependencies(_task);
969 if (result != Dependencies::end_marker) {
970 if (result == Dependencies::call_site_target_value) {
971 _inc_decompile_count_on_failure = false;
972 record_failure("call site target change");
973 } else if (Dependencies::is_klass_type(result)) {
974 record_failure("concurrent class loading");
975 } else {
976 record_failure("invalid non-klass dependency");
977 }
978 }
979 }
980
981 // scc_entry != nullptr implies loading compiled code from AOT code cache
982 bool ciEnv::is_compilation_valid(JavaThread* thread, ciMethod* target, bool preload, bool install_code, CodeBuffer* code_buffer, SCCEntry* scc_entry) {
983 methodHandle method(thread, target->get_Method());
984
985 // We require method counters to store some method state (max compilation levels) required by the compilation policy.
986 if (!preload && method->get_method_counters(thread) == nullptr) {
987 record_failure("can't create method counters");
988 if (code_buffer != nullptr) {
989 code_buffer->free_blob();
990 }
991 return false;
992 }
993
994 if (scc_entry != nullptr) {
995 // Invalid compilation states:
996 // - SCCache is closed, SCC entry is garbage.
997 // - SCC entry indicates this shared code was marked invalid while it was loaded.
998 if (!SCCache::is_on() || scc_entry->not_entrant()) {
999 return false;
1000 }
1001 }
1002
1003 // Change in Jvmti state may invalidate compilation.
1004 if (!failing() && jvmti_state_changed()) {
1005 record_failure("Jvmti state change invalidated dependencies");
1006 }
1007
1008 // Change in DTrace flags may invalidate compilation.
1009 if (!failing() &&
1010 ( (!dtrace_method_probes() && DTraceMethodProbes) ||
1011 (!dtrace_alloc_probes() && DTraceAllocProbes) )) {
1012 record_failure("DTrace flags change invalidated dependencies");
1013 }
1014
1015 if (!preload && !failing() && target->needs_clinit_barrier() &&
1016 target->holder()->is_in_error_state()) {
1017 record_failure("method holder is in error state");
1018 }
1019
1020 if (!failing() && (scc_entry == nullptr)) {
1021 if (log() != nullptr) {
1022 // Log the dependencies which this compilation declares.
1023 dependencies()->log_all_dependencies();
1024 }
1025
1026 // Encode the dependencies now, so we can check them right away.
1027 dependencies()->encode_content_bytes();
1028 }
1029 // Check for {class loads, evolution, breakpoints, ...} during compilation
1030 if (!failing() && install_code) {
1031 // Check for {class loads, evolution, breakpoints, ...} during compilation
1032 validate_compile_task_dependencies(target);
1033 if (failing() && preload) {
1034 ResourceMark rm;
1035 char *method_name = method->name_and_sig_as_C_string();
1036 log_info(scc)("preload code for '%s' failed dependency check", method_name);
1037 }
1038 }
1039
1040 if (failing()) {
1041 // While not a true deoptimization, it is a preemptive decompile.
1042 MethodData* mdo = method()->method_data();
1043 if (mdo != nullptr && _inc_decompile_count_on_failure) {
1044 mdo->inc_decompile_count();
1045 }
1046
1047 if (code_buffer != nullptr) {
1048 code_buffer->free_blob();
1049 }
1050 return false;
1051 }
1052 return true;
1053 }
1054
1055 void ciEnv::make_code_usable(JavaThread* thread, ciMethod* target, bool preload, int entry_bci, SCCEntry* scc_entry, nmethod* nm) {
1056 methodHandle method(thread, target->get_Method());
1057
1058 if (entry_bci == InvocationEntryBci) {
1059 if (TieredCompilation) {
1060 // If there is an old version we're done with it
1061 nmethod* old = method->code();
1062 if (TraceMethodReplacement && old != nullptr) {
1063 ResourceMark rm;
1064 char *method_name = method->name_and_sig_as_C_string();
1065 tty->print_cr("Replacing method %s", method_name);
1066 }
1067 if (old != nullptr) {
1068 old->make_not_used();
1069 }
1070 }
1071
1072 LogTarget(Info, nmethod, install) lt;
1073 if (lt.is_enabled()) {
1074 ResourceMark rm;
1075 char *method_name = method->name_and_sig_as_C_string();
1076 lt.print("Installing method (L%d) %s id=%d scc=%s%s%u",
1077 task()->comp_level(), method_name, compile_id(),
1078 task()->is_scc() ? "A" : "", preload ? "P" : "",
1079 (scc_entry != nullptr ? scc_entry->offset() : 0));
1080 }
1081 // Allow the code to be executed
1082 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
1083 if (nm->make_in_use()) {
1084 #ifdef ASSERT
1085 BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod();
1086 if (bs_nm != nullptr && bs_nm->supports_entry_barrier(nm)) {
1087 if (!bs_nm->is_armed(nm)) {
1088 log_info(init)("nmethod %d %d not armed", nm->compile_id(), nm->comp_level());
1089 }
1090 }
1091 #endif // ASSERT
1092 if (preload) {
1093 nm->set_preloaded(true);
1094 method->set_preload_code(nm);
1095 }
1096 if (!preload || target->holder()->is_linked()) {
1097 method->set_code(method, nm);
1098 }
1099 }
1100 } else {
1101 LogTarget(Info, nmethod, install) lt;
1102 if (lt.is_enabled()) {
1103 ResourceMark rm;
1104 char *method_name = method->name_and_sig_as_C_string();
1105 lt.print("Installing osr method (L%d) %s @ %d id=%u scc=%s%u",
1106 task()->comp_level(), method_name, entry_bci, compile_id(),
1107 task()->is_scc() ? "A" : "",
1108 (scc_entry != nullptr ? scc_entry->offset() : 0));
1109 }
1110 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag);
1111 if (nm->make_in_use()) {
1112 method->method_holder()->add_osr_nmethod(nm);
1113 }
1114 }
1115 }
1116
1117 void ciEnv::register_aot_method(JavaThread* thread,
1118 ciMethod* target,
1119 AbstractCompiler* compiler,
1120 nmethod* archived_nm,
1121 address reloc_data,
1122 GrowableArray<Handle>& oop_list,
1123 GrowableArray<Metadata*>& metadata_list,
1124 ImmutableOopMapSet* oopmaps,
1125 address immutable_data,
1126 GrowableArray<Handle>& reloc_imm_oop_list,
1127 GrowableArray<Metadata*>& reloc_imm_metadata_list,
1128 #ifndef PRODUCT
1129 AsmRemarks& asm_remarks,
1130 DbgStrings& dbg_strings,
1131 #endif /* PRODUCT */
1132 SCCReader* scc_reader)
1133 {
1134 SCCEntry* scc_entry = task()->scc_entry();
1135 assert(scc_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, MethodCompileQueue_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*/, scc_entry)) {
1154 return;
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 NOT_PRODUCT_ARG(asm_remarks)
1169 NOT_PRODUCT_ARG(dbg_strings)
1170 scc_reader);
1171
1172 if (nm != nullptr) {
1173 make_code_usable(thread, target, preload, InvocationEntryBci, scc_entry, nm);
1174 }
1175 }
1176
1177 NoSafepointVerifier nsv;
1178 if (nm != nullptr) {
1179 // Compilation succeeded, post what we know about it
1180 nm->post_compiled_method(task());
1181 task()->set_num_inlined_bytecodes(num_inlined_bytecodes());
1182 } else {
1183 // The CodeCache is full.
1184 record_failure("code cache is full");
1185 }
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 SCCEntry* scc_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, scc_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 scc_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 (scc_entry == nullptr) {
1260 scc_entry = SCCache::store_nmethod(nm, compiler, for_preload);
1261 if (scc_entry != nullptr) {
1262 scc_entry->set_inlined_bytecodes(num_inlined_bytecodes());
1263 if (has_clinit_barriers) {
1264 set_scc_clinit_barriers_entry(scc_entry); // Record it
1265 return;
1266 } else if (!for_preload) {
1267 SCCEntry* previous_entry = scc_clinit_barriers_entry();
1268 scc_entry->set_next(previous_entry); // Link it for case of deoptimization
1269 }
1270 }
1271 }
1272 make_code_usable(THREAD, target, preload, entry_bci, scc_entry, nm);
1273 }
1274 }
1275
1276 NoSafepointVerifier nsv;
1277 if (nm != nullptr) {
1278 // Compilation succeeded, post what we know about it
1279 nm->post_compiled_method(task());
1280 task()->set_num_inlined_bytecodes(num_inlined_bytecodes());
1281 } else if (install_code) {
1282 // The CodeCache is full.
1283 record_failure("code cache is full");
1284 } else {
1285 task()->set_num_inlined_bytecodes(num_inlined_bytecodes());
1286 }
1287
1288 // safepoints are allowed again
1289 }
1290
1291 // ------------------------------------------------------------------
1292 // ciEnv::find_system_klass
1293 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) {
1294 VM_ENTRY_MARK;
1295 return get_klass_by_name_impl(nullptr, constantPoolHandle(), klass_name, false);
1296 }
1297
1298 // ------------------------------------------------------------------
1299 // ciEnv::comp_level
1300 int ciEnv::comp_level() {
1301 if (task() == nullptr) return CompilationPolicy::highest_compile_level();
1302 return task()->comp_level();
1303 }
1304
1305 // ------------------------------------------------------------------
1306 // ciEnv::compile_id
1307 int ciEnv::compile_id() {
1308 if (task() == nullptr) return 0;
1309 return task()->compile_id();
1310 }
1311
1312 // ------------------------------------------------------------------
1313 // ciEnv::notice_inlined_method()
1314 void ciEnv::notice_inlined_method(ciMethod* method) {
1315 _num_inlined_bytecodes += method->code_size_for_inlining();
1316 CompileTrainingData* td = task()->training_data();
1317 if (td != nullptr) {
1318 GUARDED_VM_ENTRY({
1319 methodHandle mh(Thread::current(), method->get_Method());
1320 td->notice_inlined_method(task(), mh);
1321 });
1322 }
1323 }
1324
1325 // ------------------------------------------------------------------
1326 // ciEnv::num_inlined_bytecodes()
1327 int ciEnv::num_inlined_bytecodes() const {
1328 return _num_inlined_bytecodes;
1329 }
1330
1331 // ------------------------------------------------------------------
1332 // ciEnv::record_failure()
1333 void ciEnv::record_failure(const char* reason) {
1334 if (_failure_reason.get() == nullptr) {
1335 // Record the first failure reason.
1336 _failure_reason.set(reason);
1337 }
1338 }
1339
1340 void ciEnv::report_failure(const char* reason) {
1341 EventCompilationFailure event;
1342 if (event.should_commit()) {
1343 CompilerEvent::CompilationFailureEvent::post(event, compile_id(), reason);
1344 }
1345 }
1346
1347 // ------------------------------------------------------------------
1348 // ciEnv::record_method_not_compilable()
1349 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) {
1350 int new_compilable =
1351 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ;
1352
1353 // Only note transitions to a worse state
1354 if (new_compilable > _compilable) {
1355 if (log() != nullptr) {
1356 if (all_tiers) {
1357 log()->elem("method_not_compilable");
1358 } else {
1359 log()->elem("method_not_compilable_at_tier level='%d'",
1360 current()->task()->comp_level());
1361 }
1362 }
1363 _compilable = new_compilable;
1364
1365 // Reset failure reason; this one is more important.
1366 _failure_reason.clear();
1367 record_failure(reason);
1368 }
1369 }
1370
1371 // ------------------------------------------------------------------
1372 // ciEnv::record_out_of_memory_failure()
1373 void ciEnv::record_out_of_memory_failure() {
1374 // If memory is low, we stop compiling methods.
1375 record_method_not_compilable("out of memory");
1376 }
1377
1378 ciInstance* ciEnv::unloaded_ciinstance() {
1379 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();)
1380 }
1381
1382 // ------------------------------------------------------------------
1383 // Replay support
1384
1385
1386 // Lookup location descriptor for the class, if any.
1387 // Returns false if not found.
1388 bool ciEnv::dyno_loc(const InstanceKlass* ik, const char *&loc) const {
1389 bool found = false;
1390 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1391 if (!found) {
1392 return false;
1393 }
1394 loc = _dyno_locs->at(pos);
1395 return found;
1396 }
1397
1398 // Associate the current location descriptor with the given class and record for later lookup.
1399 void ciEnv::set_dyno_loc(const InstanceKlass* ik) {
1400 const char *loc = os::strdup(_dyno_name);
1401 bool found = false;
1402 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found);
1403 if (found) {
1404 _dyno_locs->at_put(pos, loc);
1405 } else {
1406 _dyno_klasses->insert_before(pos, ik);
1407 _dyno_locs->insert_before(pos, loc);
1408 }
1409 }
1410
1411 // Associate the current location descriptor with the given class and record for later lookup.
1412 // If it turns out that there are multiple locations for the given class, that conflict should
1413 // be handled here. Currently we choose the first location found.
1414 void ciEnv::record_best_dyno_loc(const InstanceKlass* ik) {
1415 if (!ik->is_hidden()) {
1416 return;
1417 }
1418 const char *loc0;
1419 if (!dyno_loc(ik, loc0)) {
1420 set_dyno_loc(ik);
1421 }
1422 }
1423
1424 // Look up the location descriptor for the given class and print it to the output stream.
1425 bool ciEnv::print_dyno_loc(outputStream* out, const InstanceKlass* ik) const {
1426 const char *loc;
1427 if (dyno_loc(ik, loc)) {
1428 out->print("%s", loc);
1429 return true;
1430 } else {
1431 return false;
1432 }
1433 }
1434
1435 // Look up the location descriptor for the given class and return it as a string.
1436 // Returns null if no location is found.
1437 const char *ciEnv::dyno_name(const InstanceKlass* ik) const {
1438 if (ik->is_hidden()) {
1439 stringStream ss;
1440 if (print_dyno_loc(&ss, ik)) {
1441 ss.print(" ;"); // add terminator
1442 const char* call_site = ss.as_string();
1443 return call_site;
1444 }
1445 }
1446 return nullptr;
1447 }
1448
1449 // Look up the location descriptor for the given class and return it as a string.
1450 // Returns the class name as a fallback if no location is found.
1451 const char *ciEnv::replay_name(ciKlass* k) const {
1452 if (k->is_instance_klass()) {
1453 return replay_name(k->as_instance_klass()->get_instanceKlass());
1454 }
1455 return k->name()->as_quoted_ascii();
1456 }
1457
1458 // Look up the location descriptor for the given class and return it as a string.
1459 // Returns the class name as a fallback if no location is found.
1460 const char *ciEnv::replay_name(const InstanceKlass* ik) const {
1461 const char* name = dyno_name(ik);
1462 if (name != nullptr) {
1463 return name;
1464 }
1465 return ik->name()->as_quoted_ascii();
1466 }
1467
1468 // Process a java.lang.invoke.MemberName object and record any dynamic locations.
1469 void ciEnv::record_member(Thread* thread, oop member) {
1470 assert(java_lang_invoke_MemberName::is_instance(member), "!");
1471 // Check MemberName.clazz field
1472 oop clazz = java_lang_invoke_MemberName::clazz(member);
1473 if (clazz->klass()->is_instance_klass()) {
1474 RecordLocation fp(this, "clazz");
1475 InstanceKlass* ik = InstanceKlass::cast(clazz->klass());
1476 record_best_dyno_loc(ik);
1477 }
1478 // Check MemberName.method.vmtarget field
1479 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(member);
1480 if (vmtarget != nullptr) {
1481 RecordLocation fp2(this, "<vmtarget>");
1482 InstanceKlass* ik = vmtarget->method_holder();
1483 record_best_dyno_loc(ik);
1484 }
1485 }
1486
1487 // Read an object field. Lookup is done by name only.
1488 static inline oop obj_field(oop obj, const char* name) {
1489 return ciReplay::obj_field(obj, name);
1490 }
1491
1492 // Process a java.lang.invoke.LambdaForm object and record any dynamic locations.
1493 void ciEnv::record_lambdaform(Thread* thread, oop form) {
1494 assert(java_lang_invoke_LambdaForm::is_instance(form), "!");
1495
1496 {
1497 // Check LambdaForm.vmentry field
1498 oop member = java_lang_invoke_LambdaForm::vmentry(form);
1499 RecordLocation fp0(this, "vmentry");
1500 record_member(thread, member);
1501 }
1502
1503 // Check LambdaForm.names array
1504 objArrayOop names = (objArrayOop)obj_field(form, "names");
1505 if (names != nullptr) {
1506 RecordLocation lp0(this, "names");
1507 int len = names->length();
1508 for (int i = 0; i < len; ++i) {
1509 oop name = names->obj_at(i);
1510 RecordLocation lp1(this, "%d", i);
1511 // Check LambdaForm.names[i].function field
1512 RecordLocation lp2(this, "function");
1513 oop function = obj_field(name, "function");
1514 if (function != nullptr) {
1515 // Check LambdaForm.names[i].function.member field
1516 oop member = obj_field(function, "member");
1517 if (member != nullptr) {
1518 RecordLocation lp3(this, "member");
1519 record_member(thread, member);
1520 }
1521 // Check LambdaForm.names[i].function.resolvedHandle field
1522 oop mh = obj_field(function, "resolvedHandle");
1523 if (mh != nullptr) {
1524 RecordLocation lp3(this, "resolvedHandle");
1525 record_mh(thread, mh);
1526 }
1527 // Check LambdaForm.names[i].function.invoker field
1528 oop invoker = obj_field(function, "invoker");
1529 if (invoker != nullptr) {
1530 RecordLocation lp3(this, "invoker");
1531 record_mh(thread, invoker);
1532 }
1533 }
1534 }
1535 }
1536 }
1537
1538 // Process a java.lang.invoke.MethodHandle object and record any dynamic locations.
1539 void ciEnv::record_mh(Thread* thread, oop mh) {
1540 {
1541 // Check MethodHandle.form field
1542 oop form = java_lang_invoke_MethodHandle::form(mh);
1543 RecordLocation fp(this, "form");
1544 record_lambdaform(thread, form);
1545 }
1546 // Check DirectMethodHandle.member field
1547 if (java_lang_invoke_DirectMethodHandle::is_instance(mh)) {
1548 oop member = java_lang_invoke_DirectMethodHandle::member(mh);
1549 RecordLocation fp(this, "member");
1550 record_member(thread, member);
1551 } else {
1552 // Check <MethodHandle subclass>.argL<n> fields
1553 // Probably BoundMethodHandle.Species_L*, but we only care if the field exists
1554 char arg_name[] = "argLXX";
1555 int max_arg = 99;
1556 for (int index = 0; index <= max_arg; ++index) {
1557 jio_snprintf(arg_name, sizeof (arg_name), "argL%d", index);
1558 oop arg = obj_field(mh, arg_name);
1559 if (arg != nullptr) {
1560 RecordLocation fp(this, "%s", arg_name);
1561 if (arg->klass()->is_instance_klass()) {
1562 InstanceKlass* ik2 = InstanceKlass::cast(arg->klass());
1563 record_best_dyno_loc(ik2);
1564 record_call_site_obj(thread, arg);
1565 }
1566 } else {
1567 break;
1568 }
1569 }
1570 }
1571 }
1572
1573 // Process an object found at an invokedynamic/invokehandle call site and record any dynamic locations.
1574 // Types currently supported are MethodHandle and CallSite.
1575 // The object is typically the "appendix" object, or Bootstrap Method (BSM) object.
1576 void ciEnv::record_call_site_obj(Thread* thread, oop obj)
1577 {
1578 if (obj != nullptr) {
1579 if (java_lang_invoke_MethodHandle::is_instance(obj)) {
1580 record_mh(thread, obj);
1581 } else if (java_lang_invoke_ConstantCallSite::is_instance(obj)) {
1582 oop target = java_lang_invoke_CallSite::target(obj);
1583 if (target->klass()->is_instance_klass()) {
1584 RecordLocation fp(this, "target");
1585 InstanceKlass* ik = InstanceKlass::cast(target->klass());
1586 record_best_dyno_loc(ik);
1587 }
1588 }
1589 }
1590 }
1591
1592 // Process an adapter Method* found at an invokedynamic/invokehandle call site and record any dynamic locations.
1593 void ciEnv::record_call_site_method(Thread* thread, Method* adapter) {
1594 InstanceKlass* holder = adapter->method_holder();
1595 if (!holder->is_hidden()) {
1596 return;
1597 }
1598 RecordLocation fp(this, "<adapter>");
1599 record_best_dyno_loc(holder);
1600 }
1601
1602 // Process an invokedynamic call site and record any dynamic locations.
1603 void ciEnv::process_invokedynamic(const constantPoolHandle &cp, int indy_index, JavaThread* thread) {
1604 ResolvedIndyEntry* indy_info = cp->resolved_indy_entry_at(indy_index);
1605 if (indy_info->method() != nullptr) {
1606 // process the adapter
1607 Method* adapter = indy_info->method();
1608 record_call_site_method(thread, adapter);
1609 // process the appendix
1610 oop appendix = cp->resolved_reference_from_indy(indy_index);
1611 {
1612 RecordLocation fp(this, "<appendix>");
1613 record_call_site_obj(thread, appendix);
1614 }
1615 // process the BSM
1616 int pool_index = indy_info->constant_pool_index();
1617 BootstrapInfo bootstrap_specifier(cp, pool_index, indy_index);
1618 oop bsm = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), thread);
1619 {
1620 RecordLocation fp(this, "<bsm>");
1621 record_call_site_obj(thread, bsm);
1622 }
1623 }
1624 }
1625
1626 // Process an invokehandle call site and record any dynamic locations.
1627 void ciEnv::process_invokehandle(const constantPoolHandle &cp, int index, JavaThread* thread) {
1628 const int holder_index = cp->klass_ref_index_at(index, Bytecodes::_invokehandle);
1629 if (!cp->tag_at(holder_index).is_klass()) {
1630 return; // not resolved
1631 }
1632 Klass* holder = ConstantPool::klass_at_if_loaded(cp, holder_index);
1633 Symbol* name = cp->name_ref_at(index, Bytecodes::_invokehandle);
1634 if (MethodHandles::is_signature_polymorphic_name(holder, name)) {
1635 ResolvedMethodEntry* method_entry = cp->resolved_method_entry_at(index);
1636 if (method_entry->is_resolved(Bytecodes::_invokehandle)) {
1637 // process the adapter
1638 Method* adapter = method_entry->method();
1639 oop appendix = cp->cache()->appendix_if_resolved(method_entry);
1640 record_call_site_method(thread, adapter);
1641 // process the appendix
1642 {
1643 RecordLocation fp(this, "<appendix>");
1644 record_call_site_obj(thread, appendix);
1645 }
1646 }
1647 }
1648 }
1649
1650 // Search the class hierarchy for dynamic classes reachable through dynamic call sites or
1651 // constant pool entries and record for future lookup.
1652 void ciEnv::find_dynamic_call_sites() {
1653 _dyno_klasses = new (arena()) GrowableArray<const InstanceKlass*>(arena(), 100, 0, nullptr);
1654 _dyno_locs = new (arena()) GrowableArray<const char *>(arena(), 100, 0, nullptr);
1655
1656 // Iterate over the class hierarchy
1657 for (ClassHierarchyIterator iter(vmClasses::Object_klass()); !iter.done(); iter.next()) {
1658 Klass* sub = iter.klass();
1659 if (sub->is_instance_klass()) {
1660 InstanceKlass *isub = InstanceKlass::cast(sub);
1661 InstanceKlass* ik = isub;
1662 if (!ik->is_linked()) {
1663 continue;
1664 }
1665 if (ik->is_hidden()) {
1666 continue;
1667 }
1668 JavaThread* thread = JavaThread::current();
1669 const constantPoolHandle pool(thread, ik->constants());
1670
1671 // Look for invokedynamic/invokehandle call sites
1672 for (int i = 0; i < ik->methods()->length(); ++i) {
1673 Method* m = ik->methods()->at(i);
1674
1675 BytecodeStream bcs(methodHandle(thread, m));
1676 while (!bcs.is_last_bytecode()) {
1677 Bytecodes::Code opcode = bcs.next();
1678 opcode = bcs.raw_code();
1679 switch (opcode) {
1680 case Bytecodes::_invokedynamic:
1681 case Bytecodes::_invokehandle: {
1682 RecordLocation fp(this, "@bci %s %s %s %d",
1683 ik->name()->as_quoted_ascii(),
1684 m->name()->as_quoted_ascii(), m->signature()->as_quoted_ascii(),
1685 bcs.bci());
1686 if (opcode == Bytecodes::_invokedynamic) {
1687 int index = bcs.get_index_u4();
1688 process_invokedynamic(pool, index, thread);
1689 } else {
1690 assert(opcode == Bytecodes::_invokehandle, "new switch label added?");
1691 int cp_cache_index = bcs.get_index_u2();
1692 process_invokehandle(pool, cp_cache_index, thread);
1693 }
1694 break;
1695 }
1696 default:
1697 break;
1698 }
1699 }
1700 }
1701
1702 // Look for MethodHandle constant pool entries
1703 RecordLocation fp(this, "@cpi %s", ik->name()->as_quoted_ascii());
1704 int len = pool->length();
1705 for (int i = 0; i < len; ++i) {
1706 if (pool->tag_at(i).is_method_handle()) {
1707 bool found_it;
1708 oop mh = pool->find_cached_constant_at(i, found_it, thread);
1709 if (mh != nullptr) {
1710 RecordLocation fp(this, "%d", i);
1711 record_mh(thread, mh);
1712 }
1713 }
1714 }
1715 }
1716 }
1717 }
1718
1719 void ciEnv::dump_compile_data(outputStream* out) {
1720 CompileTask* task = this->task();
1721 if (task) {
1722 #ifdef COMPILER2
1723 if (ReplayReduce && compiler_data() != nullptr) {
1724 // Dump C2 "reduced" inlining data.
1725 ((Compile*)compiler_data())->dump_inline_data_reduced(out);
1726 }
1727 #endif
1728 Method* method = task->method();
1729 int entry_bci = task->osr_bci();
1730 int comp_level = task->comp_level();
1731 out->print("compile ");
1732 get_method(method)->dump_name_as_ascii(out);
1733 out->print(" %d %d", entry_bci, comp_level);
1734 if (compiler_data() != nullptr) {
1735 if (is_c2_compile(comp_level)) {
1736 #ifdef COMPILER2
1737 // Dump C2 inlining data.
1738 ((Compile*)compiler_data())->dump_inline_data(out);
1739 #endif
1740 } else if (is_c1_compile(comp_level)) {
1741 #ifdef COMPILER1
1742 // Dump C1 inlining data.
1743 ((Compilation*)compiler_data())->dump_inline_data(out);
1744 #endif
1745 }
1746 }
1747 out->cr();
1748 }
1749 }
1750
1751 // Called from VM error reporter, so be careful.
1752 // Don't safepoint or acquire any locks.
1753 //
1754 void ciEnv::dump_replay_data_helper(outputStream* out) {
1755 NoSafepointVerifier no_safepoint;
1756 ResourceMark rm;
1757
1758 assert(this->task() != nullptr, "task must not be null");
1759
1760 dump_replay_data_version(out);
1761 #if INCLUDE_JVMTI
1762 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables);
1763 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint);
1764 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions);
1765 #endif // INCLUDE_JVMTI
1766
1767 find_dynamic_call_sites();
1768
1769 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata();
1770 out->print_cr("# %d ciObject found", objects->length());
1771
1772 // The very first entry is the InstanceKlass of the root method of the current compilation.
1773 ciInstanceKlass::dump_replay_instanceKlass(out, task()->method()->method_holder());
1774
1775 for (int i = 0; i < objects->length(); i++) {
1776 objects->at(i)->dump_replay_data(out);
1777 }
1778
1779 dump_compile_data(out);
1780 out->flush();
1781 }
1782
1783 // Called from VM error reporter, so be careful.
1784 // Don't safepoint or acquire any locks.
1785 //
1786 void ciEnv::dump_replay_data_unsafe(outputStream* out) {
1787 GUARDED_VM_ENTRY(
1788 dump_replay_data_helper(out);
1789 )
1790 }
1791
1792 void ciEnv::dump_replay_data(outputStream* out) {
1793 GUARDED_VM_ENTRY(
1794 MutexLocker ml(Compile_lock);
1795 dump_replay_data_helper(out);
1796 )
1797 }
1798
1799 void ciEnv::dump_replay_data(int compile_id) {
1800 char buffer[64];
1801 int ret = jio_snprintf(buffer, sizeof(buffer), "replay_pid%d_compid%d.log", os::current_process_id(), compile_id);
1802 if (ret > 0) {
1803 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1804 if (fd != -1) {
1805 FILE* replay_data_file = os::fdopen(fd, "w");
1806 if (replay_data_file != nullptr) {
1807 fileStream replay_data_stream(replay_data_file, /*need_close=*/true);
1808 dump_replay_data(&replay_data_stream);
1809 tty->print_cr("# Compiler replay data is saved as: %s", buffer);
1810 } else {
1811 tty->print_cr("# Can't open file to dump replay data.");
1812 close(fd);
1813 }
1814 }
1815 }
1816 }
1817
1818 void ciEnv::dump_inline_data(int compile_id) {
1819 char buffer[64];
1820 int ret = jio_snprintf(buffer, sizeof(buffer), "inline_pid%d_compid%d.log", os::current_process_id(), compile_id);
1821 if (ret > 0) {
1822 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666);
1823 if (fd != -1) {
1824 FILE* inline_data_file = os::fdopen(fd, "w");
1825 if (inline_data_file != nullptr) {
1826 fileStream replay_data_stream(inline_data_file, /*need_close=*/true);
1827 GUARDED_VM_ENTRY(
1828 MutexLocker ml(Compile_lock);
1829 dump_replay_data_version(&replay_data_stream);
1830 dump_compile_data(&replay_data_stream);
1831 )
1832 replay_data_stream.flush();
1833 tty->print("# Compiler inline data is saved as: ");
1834 tty->print_cr("%s", buffer);
1835 } else {
1836 tty->print_cr("# Can't open file to dump inline data.");
1837 close(fd);
1838 }
1839 }
1840 }
1841 }
1842
1843 void ciEnv::dump_replay_data_version(outputStream* out) {
1844 out->print_cr("version %d", REPLAY_VERSION);
1845 }
1846
1847 bool ciEnv::is_precompiled() {
1848 return (task() != nullptr) && (task()->compile_reason() == CompileTask::Reason_Precompile ||
1849 task()->compile_reason() == CompileTask::Reason_PrecompileForPreload);
1850 }
1851
1852 bool ciEnv::is_fully_initialized(InstanceKlass* ik) {
1853 assert(is_precompiled(), "");
1854 if (task()->method()->method_holder() == ik) {
1855 return true; // FIXME: may be too strong; being_initialized, at least
1856 }
1857 switch (task()->compile_reason()) {
1858 case CompileTask::Reason_Precompile: {
1859 // check init dependencies
1860 MethodTrainingData* mtd = nullptr;
1861 GUARDED_VM_ENTRY(mtd = MethodTrainingData::find(methodHandle(Thread::current(), task()->method())); )
1862 if (mtd != nullptr) {
1863 CompileTrainingData* ctd = mtd->last_toplevel_compile(task()->comp_level());
1864 if (ctd != nullptr) {
1865 for (int i = 0; i < ctd->init_dep_count(); i++) {
1866 KlassTrainingData* ktd = ctd->init_dep(i);
1867 if (ktd->has_holder() && (ktd->holder() == ik)) {
1868 log_trace(precompile)("%d: init_dependency: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name());
1869 return true; // init dependency present
1870 }
1871 }
1872 }
1873 }
1874 return false; // no init dependency
1875 }
1876 case CompileTask::Reason_PrecompileForPreload: {
1877 // FIXME: assumes that all shared classes are initialized
1878 if (ik->is_shared()) {
1879 return true; // class init barriers
1880 }
1881 if (CDSConfig::is_dumping_final_static_archive() && ArchiveBuilder::is_active() &&
1882 ArchiveBuilder::current()->has_been_archived((address)ik)) {
1883 return true; // class init barriers
1884 }
1885 return false;
1886 }
1887 default: fatal("%s", CompileTask::reason_name(task()->compile_reason()));
1888 }
1889 return false;
1890 }
1891
1892 InstanceKlass::ClassState ciEnv::compute_init_state_for_precompiled(InstanceKlass* ik) {
1893 ASSERT_IN_VM;
1894 assert(is_precompiled(), "");
1895 ResourceMark rm;
1896 if (is_fully_initialized(ik)) {
1897 log_trace(precompile)("%d: fully_initialized: %s", task()->compile_id(), ik->external_name());
1898 return InstanceKlass::ClassState::fully_initialized;
1899 } else if (MetaspaceObj::is_shared(ik)) {
1900 guarantee(ik->is_loaded(), ""); // FIXME: assumes pre-loading by CDS; ik->is_linked() requires pre-linking
1901 log_trace(precompile)("%d: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name());
1902 return ik->init_state(); // not yet initialized
1903 } else if (CDSConfig::is_dumping_final_static_archive() && ArchiveBuilder::is_active()) {
1904 if (!ArchiveBuilder::current()->has_been_archived((address)ik)) {
1905 fatal("New workflow: should not compile code for unarchived class: %s", ik->external_name());
1906 }
1907 guarantee(ik->is_loaded(), "");
1908 log_trace(precompile)("%d: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name());
1909 return ik->init_state(); // not yet initialized
1910 } else {
1911 // Not present in the archive.
1912 fatal("unloaded: %s", ik->external_name());
1913 // guarantee(SystemDictionaryShared::lookup_init_state(ik) == ik->init_state(), "");
1914 log_trace(precompile)("%d: allocated: %s", task()->compile_id(), ik->external_name());
1915 return InstanceKlass::ClassState::allocated; // not yet linked
1916 }
1917 }