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) { 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) { 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 // ------------------------------------------------------------------ 982 // ciEnv::register_method 983 void ciEnv::register_method(ciMethod* target, 984 int entry_bci, 985 CodeOffsets* offsets, 986 int orig_pc_offset, 987 CodeBuffer* code_buffer, 988 int frame_words, 989 OopMapSet* oop_map_set, 990 ExceptionHandlerTable* handler_table, 991 ImplicitExceptionTable* inc_table, 992 AbstractCompiler* compiler, 993 bool has_clinit_barriers, 994 bool for_preload, 995 bool has_unsafe_access, 996 bool has_wide_vectors, 997 bool has_monitors, 998 bool has_scoped_access, 999 int immediate_oops_patched, 1000 bool install_code, 1001 SCCEntry* scc_entry) { 1002 VM_ENTRY_MARK; 1003 nmethod* nm = nullptr; 1004 { 1005 methodHandle method(THREAD, target->get_Method()); 1006 bool preload = task()->preload(); // Code is preloaded before Java method execution 1007 1008 // We require method counters to store some method state (max compilation levels) required by the compilation policy. 1009 if (!preload && method->get_method_counters(THREAD) == nullptr) { 1010 record_failure("can't create method counters"); 1011 // All buffers in the CodeBuffer are allocated in the CodeCache. 1012 // If the code buffer is created on each compile attempt 1013 // as in C2, then it must be freed. 1014 // But keep shared code. 1015 code_buffer->free_blob(); 1016 return; 1017 } 1018 1019 // Check if memory should be freed before allocation 1020 CodeCache::gc_on_allocation(); 1021 1022 // To prevent compile queue updates. 1023 MutexLocker locker(THREAD, task()->compile_queue()->lock()); 1024 1025 // Prevent InstanceKlass::add_to_hierarchy from running 1026 // and invalidating our dependencies until we install this method. 1027 // No safepoints are allowed. Otherwise, class redefinition can occur in between. 1028 MutexLocker ml(Compile_lock); 1029 NoSafepointVerifier nsv; 1030 1031 if (scc_entry != nullptr) { 1032 // Invalid compilation states: 1033 // - SCCache is closed, SCC entry is garbage. 1034 // - SCC entry indicates this shared code was marked invalid while it was loaded. 1035 if (!SCCache::is_on() || scc_entry->not_entrant()) { 1036 code_buffer->free_blob(); 1037 return; 1038 } 1039 } 1040 1041 // Change in Jvmti state may invalidate compilation. 1042 if (!failing() && jvmti_state_changed()) { 1043 record_failure("Jvmti state change invalidated dependencies"); 1044 } 1045 1046 // Change in DTrace flags may invalidate compilation. 1047 if (!failing() && 1048 ( (!dtrace_method_probes() && DTraceMethodProbes) || 1049 (!dtrace_alloc_probes() && DTraceAllocProbes) )) { 1050 record_failure("DTrace flags change invalidated dependencies"); 1051 } 1052 1053 if (!preload && !failing() && target->needs_clinit_barrier() && 1054 target->holder()->is_in_error_state()) { 1055 record_failure("method holder is in error state"); 1056 } 1057 1058 if (!failing() && (scc_entry == nullptr)) { 1059 if (log() != nullptr) { 1060 // Log the dependencies which this compilation declares. 1061 dependencies()->log_all_dependencies(); 1062 } 1063 1064 // Encode the dependencies now, so we can check them right away. 1065 dependencies()->encode_content_bytes(); 1066 } 1067 // Check for {class loads, evolution, breakpoints, ...} during compilation 1068 if (!failing() && install_code) { 1069 // Check for {class loads, evolution, breakpoints, ...} during compilation 1070 validate_compile_task_dependencies(target); 1071 if (failing() && preload) { 1072 ResourceMark rm; 1073 char *method_name = method->name_and_sig_as_C_string(); 1074 log_info(scc)("preload code for '%s' failed dependency check", method_name); 1075 } 1076 } 1077 1078 if (failing()) { 1079 // While not a true deoptimization, it is a preemptive decompile. 1080 MethodData* mdo = method()->method_data(); 1081 if (mdo != nullptr && _inc_decompile_count_on_failure) { 1082 mdo->inc_decompile_count(); 1083 } 1084 1085 // All buffers in the CodeBuffer are allocated in the CodeCache. 1086 // If the code buffer is created on each compile attempt 1087 // as in C2, then it must be freed. 1088 code_buffer->free_blob(); 1089 return; 1090 } 1091 1092 assert(offsets->value(CodeOffsets::Deopt) != -1, "must have deopt entry"); 1093 assert(offsets->value(CodeOffsets::Exceptions) != -1, "must have exception entry"); 1094 1095 if (scc_entry == nullptr) { 1096 scc_entry = SCCache::store_nmethod(method, 1097 compile_id(), 1098 entry_bci, 1099 offsets, 1100 orig_pc_offset, 1101 debug_info(), dependencies(), code_buffer, 1102 frame_words, oop_map_set, 1103 handler_table, inc_table, 1104 compiler, 1105 CompLevel(task()->comp_level()), 1106 has_clinit_barriers, 1107 for_preload, 1108 has_unsafe_access, 1109 has_wide_vectors, 1110 has_monitors, 1111 has_scoped_access); 1112 if (scc_entry != nullptr) { 1113 scc_entry->set_inlined_bytecodes(num_inlined_bytecodes()); 1114 if (has_clinit_barriers) { 1115 set_scc_clinit_barriers_entry(scc_entry); // Record it 1116 // Build second version of code without class initialization barriers 1117 code_buffer->free_blob(); 1118 return; 1119 } else if (!for_preload) { 1120 SCCEntry* previous_entry = scc_clinit_barriers_entry(); 1121 scc_entry->set_next(previous_entry); // Link it for case of deoptimization 1122 } 1123 } 1124 } 1125 if (install_code) { 1126 nm = nmethod::new_nmethod(method, 1127 compile_id(), 1128 entry_bci, 1129 offsets, 1130 orig_pc_offset, 1131 debug_info(), dependencies(), code_buffer, 1132 frame_words, oop_map_set, 1133 handler_table, inc_table, 1134 compiler, CompLevel(task()->comp_level()), 1135 scc_entry); 1136 } 1137 // Free codeBlobs 1138 code_buffer->free_blob(); 1139 1140 if (nm != nullptr) { 1141 nm->set_has_unsafe_access(has_unsafe_access); 1142 nm->set_has_wide_vectors(has_wide_vectors); 1143 nm->set_has_monitors(has_monitors); 1144 nm->set_has_scoped_access(has_scoped_access); 1145 nm->set_preloaded(preload); 1146 nm->set_has_clinit_barriers(has_clinit_barriers); 1147 assert(!method->is_synchronized() || nm->has_monitors(), ""); 1148 1149 if (entry_bci == InvocationEntryBci) { 1150 if (TieredCompilation) { 1151 // If there is an old version we're done with it 1152 nmethod* old = method->code(); 1153 if (TraceMethodReplacement && old != nullptr) { 1154 ResourceMark rm; 1155 char *method_name = method->name_and_sig_as_C_string(); 1156 tty->print_cr("Replacing method %s", method_name); 1157 } 1158 if (old != nullptr) { 1159 old->make_not_used(); 1160 } 1161 } 1162 1163 LogTarget(Info, nmethod, install) lt; 1164 if (lt.is_enabled()) { 1165 ResourceMark rm; 1166 char *method_name = method->name_and_sig_as_C_string(); 1167 lt.print("Installing method (L%d) %s id=%d scc=%s%s%u", 1168 task()->comp_level(), method_name, compile_id(), 1169 task()->is_scc() ? "A" : "", preload ? "P" : "", 1170 (scc_entry != nullptr ? scc_entry->offset() : 0)); 1171 } 1172 // Allow the code to be executed 1173 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag); 1174 if (nm->make_in_use()) { 1175 #ifdef ASSERT 1176 BarrierSetNMethod* bs_nm = BarrierSet::barrier_set()->barrier_set_nmethod(); 1177 if (bs_nm != nullptr && bs_nm->supports_entry_barrier(nm)) { 1178 if (!bs_nm->is_armed(nm)) { 1179 log_info(init)("nmethod %d %d not armed", nm->compile_id(), nm->comp_level()); 1180 } 1181 } 1182 #endif // ASSERT 1183 if (preload) { 1184 method->set_preload_code(nm); 1185 } 1186 if (!preload || target->holder()->is_linked()) { 1187 method->set_code(method, nm); 1188 } 1189 } 1190 } else { 1191 LogTarget(Info, nmethod, install) lt; 1192 if (lt.is_enabled()) { 1193 ResourceMark rm; 1194 char *method_name = method->name_and_sig_as_C_string(); 1195 lt.print("Installing osr method (L%d) %s @ %d id=%u scc=%s%u", 1196 task()->comp_level(), method_name, entry_bci, compile_id(), 1197 task()->is_scc() ? "A" : "", 1198 (scc_entry != nullptr ? scc_entry->offset() : 0)); 1199 } 1200 MutexLocker ml(NMethodState_lock, Mutex::_no_safepoint_check_flag); 1201 if (nm->make_in_use()) { 1202 method->method_holder()->add_osr_nmethod(nm); 1203 } 1204 } 1205 } 1206 } 1207 1208 NoSafepointVerifier nsv; 1209 if (nm != nullptr) { 1210 // Compilation succeeded, post what we know about it 1211 nm->post_compiled_method(task()); 1212 task()->set_num_inlined_bytecodes(num_inlined_bytecodes()); 1213 } else if (install_code) { 1214 // The CodeCache is full. 1215 record_failure("code cache is full"); 1216 } else { 1217 task()->set_num_inlined_bytecodes(num_inlined_bytecodes()); 1218 } 1219 1220 // safepoints are allowed again 1221 } 1222 1223 // ------------------------------------------------------------------ 1224 // ciEnv::find_system_klass 1225 ciKlass* ciEnv::find_system_klass(ciSymbol* klass_name) { 1226 VM_ENTRY_MARK; 1227 return get_klass_by_name_impl(nullptr, constantPoolHandle(), klass_name, false); 1228 } 1229 1230 // ------------------------------------------------------------------ 1231 // ciEnv::comp_level 1232 int ciEnv::comp_level() { 1233 if (task() == nullptr) return CompilationPolicy::highest_compile_level(); 1234 return task()->comp_level(); 1235 } 1236 1237 // ------------------------------------------------------------------ 1238 // ciEnv::compile_id 1239 int ciEnv::compile_id() { 1240 if (task() == nullptr) return 0; 1241 return task()->compile_id(); 1242 } 1243 1244 // ------------------------------------------------------------------ 1245 // ciEnv::notice_inlined_method() 1246 void ciEnv::notice_inlined_method(ciMethod* method) { 1247 _num_inlined_bytecodes += method->code_size_for_inlining(); 1248 CompileTrainingData* tdata = task()->training_data(); 1249 if (tdata != nullptr) { 1250 GUARDED_VM_ENTRY({ 1251 methodHandle mh(Thread::current(), method->get_Method()); 1252 tdata->notice_inlined_method(task(), mh); 1253 }); 1254 } 1255 } 1256 1257 // ------------------------------------------------------------------ 1258 // ciEnv::num_inlined_bytecodes() 1259 int ciEnv::num_inlined_bytecodes() const { 1260 return _num_inlined_bytecodes; 1261 } 1262 1263 // ------------------------------------------------------------------ 1264 // ciEnv::record_failure() 1265 void ciEnv::record_failure(const char* reason) { 1266 if (_failure_reason.get() == nullptr) { 1267 // Record the first failure reason. 1268 _failure_reason.set(reason); 1269 } 1270 } 1271 1272 void ciEnv::report_failure(const char* reason) { 1273 EventCompilationFailure event; 1274 if (event.should_commit()) { 1275 CompilerEvent::CompilationFailureEvent::post(event, compile_id(), reason); 1276 } 1277 } 1278 1279 // ------------------------------------------------------------------ 1280 // ciEnv::record_method_not_compilable() 1281 void ciEnv::record_method_not_compilable(const char* reason, bool all_tiers) { 1282 int new_compilable = 1283 all_tiers ? MethodCompilable_never : MethodCompilable_not_at_tier ; 1284 1285 // Only note transitions to a worse state 1286 if (new_compilable > _compilable) { 1287 if (log() != nullptr) { 1288 if (all_tiers) { 1289 log()->elem("method_not_compilable"); 1290 } else { 1291 log()->elem("method_not_compilable_at_tier level='%d'", 1292 current()->task()->comp_level()); 1293 } 1294 } 1295 _compilable = new_compilable; 1296 1297 // Reset failure reason; this one is more important. 1298 _failure_reason.clear(); 1299 record_failure(reason); 1300 } 1301 } 1302 1303 // ------------------------------------------------------------------ 1304 // ciEnv::record_out_of_memory_failure() 1305 void ciEnv::record_out_of_memory_failure() { 1306 // If memory is low, we stop compiling methods. 1307 record_method_not_compilable("out of memory"); 1308 } 1309 1310 ciInstance* ciEnv::unloaded_ciinstance() { 1311 GUARDED_VM_ENTRY(return _factory->get_unloaded_object_constant();) 1312 } 1313 1314 // ------------------------------------------------------------------ 1315 // Replay support 1316 1317 1318 // Lookup location descriptor for the class, if any. 1319 // Returns false if not found. 1320 bool ciEnv::dyno_loc(const InstanceKlass* ik, const char *&loc) const { 1321 bool found = false; 1322 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found); 1323 if (!found) { 1324 return false; 1325 } 1326 loc = _dyno_locs->at(pos); 1327 return found; 1328 } 1329 1330 // Associate the current location descriptor with the given class and record for later lookup. 1331 void ciEnv::set_dyno_loc(const InstanceKlass* ik) { 1332 const char *loc = os::strdup(_dyno_name); 1333 bool found = false; 1334 int pos = _dyno_klasses->find_sorted<const InstanceKlass*, klass_compare>(ik, found); 1335 if (found) { 1336 _dyno_locs->at_put(pos, loc); 1337 } else { 1338 _dyno_klasses->insert_before(pos, ik); 1339 _dyno_locs->insert_before(pos, loc); 1340 } 1341 } 1342 1343 // Associate the current location descriptor with the given class and record for later lookup. 1344 // If it turns out that there are multiple locations for the given class, that conflict should 1345 // be handled here. Currently we choose the first location found. 1346 void ciEnv::record_best_dyno_loc(const InstanceKlass* ik) { 1347 if (!ik->is_hidden()) { 1348 return; 1349 } 1350 const char *loc0; 1351 if (!dyno_loc(ik, loc0)) { 1352 set_dyno_loc(ik); 1353 } 1354 } 1355 1356 // Look up the location descriptor for the given class and print it to the output stream. 1357 bool ciEnv::print_dyno_loc(outputStream* out, const InstanceKlass* ik) const { 1358 const char *loc; 1359 if (dyno_loc(ik, loc)) { 1360 out->print("%s", loc); 1361 return true; 1362 } else { 1363 return false; 1364 } 1365 } 1366 1367 // Look up the location descriptor for the given class and return it as a string. 1368 // Returns null if no location is found. 1369 const char *ciEnv::dyno_name(const InstanceKlass* ik) const { 1370 if (ik->is_hidden()) { 1371 stringStream ss; 1372 if (print_dyno_loc(&ss, ik)) { 1373 ss.print(" ;"); // add terminator 1374 const char* call_site = ss.as_string(); 1375 return call_site; 1376 } 1377 } 1378 return nullptr; 1379 } 1380 1381 // Look up the location descriptor for the given class and return it as a string. 1382 // Returns the class name as a fallback if no location is found. 1383 const char *ciEnv::replay_name(ciKlass* k) const { 1384 if (k->is_instance_klass()) { 1385 return replay_name(k->as_instance_klass()->get_instanceKlass()); 1386 } 1387 return k->name()->as_quoted_ascii(); 1388 } 1389 1390 // Look up the location descriptor for the given class and return it as a string. 1391 // Returns the class name as a fallback if no location is found. 1392 const char *ciEnv::replay_name(const InstanceKlass* ik) const { 1393 const char* name = dyno_name(ik); 1394 if (name != nullptr) { 1395 return name; 1396 } 1397 return ik->name()->as_quoted_ascii(); 1398 } 1399 1400 // Process a java.lang.invoke.MemberName object and record any dynamic locations. 1401 void ciEnv::record_member(Thread* thread, oop member) { 1402 assert(java_lang_invoke_MemberName::is_instance(member), "!"); 1403 // Check MemberName.clazz field 1404 oop clazz = java_lang_invoke_MemberName::clazz(member); 1405 if (clazz->klass()->is_instance_klass()) { 1406 RecordLocation fp(this, "clazz"); 1407 InstanceKlass* ik = InstanceKlass::cast(clazz->klass()); 1408 record_best_dyno_loc(ik); 1409 } 1410 // Check MemberName.method.vmtarget field 1411 Method* vmtarget = java_lang_invoke_MemberName::vmtarget(member); 1412 if (vmtarget != nullptr) { 1413 RecordLocation fp2(this, "<vmtarget>"); 1414 InstanceKlass* ik = vmtarget->method_holder(); 1415 record_best_dyno_loc(ik); 1416 } 1417 } 1418 1419 // Read an object field. Lookup is done by name only. 1420 static inline oop obj_field(oop obj, const char* name) { 1421 return ciReplay::obj_field(obj, name); 1422 } 1423 1424 // Process a java.lang.invoke.LambdaForm object and record any dynamic locations. 1425 void ciEnv::record_lambdaform(Thread* thread, oop form) { 1426 assert(java_lang_invoke_LambdaForm::is_instance(form), "!"); 1427 1428 { 1429 // Check LambdaForm.vmentry field 1430 oop member = java_lang_invoke_LambdaForm::vmentry(form); 1431 RecordLocation fp0(this, "vmentry"); 1432 record_member(thread, member); 1433 } 1434 1435 // Check LambdaForm.names array 1436 objArrayOop names = (objArrayOop)obj_field(form, "names"); 1437 if (names != nullptr) { 1438 RecordLocation lp0(this, "names"); 1439 int len = names->length(); 1440 for (int i = 0; i < len; ++i) { 1441 oop name = names->obj_at(i); 1442 RecordLocation lp1(this, "%d", i); 1443 // Check LambdaForm.names[i].function field 1444 RecordLocation lp2(this, "function"); 1445 oop function = obj_field(name, "function"); 1446 if (function != nullptr) { 1447 // Check LambdaForm.names[i].function.member field 1448 oop member = obj_field(function, "member"); 1449 if (member != nullptr) { 1450 RecordLocation lp3(this, "member"); 1451 record_member(thread, member); 1452 } 1453 // Check LambdaForm.names[i].function.resolvedHandle field 1454 oop mh = obj_field(function, "resolvedHandle"); 1455 if (mh != nullptr) { 1456 RecordLocation lp3(this, "resolvedHandle"); 1457 record_mh(thread, mh); 1458 } 1459 // Check LambdaForm.names[i].function.invoker field 1460 oop invoker = obj_field(function, "invoker"); 1461 if (invoker != nullptr) { 1462 RecordLocation lp3(this, "invoker"); 1463 record_mh(thread, invoker); 1464 } 1465 } 1466 } 1467 } 1468 } 1469 1470 // Process a java.lang.invoke.MethodHandle object and record any dynamic locations. 1471 void ciEnv::record_mh(Thread* thread, oop mh) { 1472 { 1473 // Check MethodHandle.form field 1474 oop form = java_lang_invoke_MethodHandle::form(mh); 1475 RecordLocation fp(this, "form"); 1476 record_lambdaform(thread, form); 1477 } 1478 // Check DirectMethodHandle.member field 1479 if (java_lang_invoke_DirectMethodHandle::is_instance(mh)) { 1480 oop member = java_lang_invoke_DirectMethodHandle::member(mh); 1481 RecordLocation fp(this, "member"); 1482 record_member(thread, member); 1483 } else { 1484 // Check <MethodHandle subclass>.argL<n> fields 1485 // Probably BoundMethodHandle.Species_L*, but we only care if the field exists 1486 char arg_name[] = "argLXX"; 1487 int max_arg = 99; 1488 for (int index = 0; index <= max_arg; ++index) { 1489 jio_snprintf(arg_name, sizeof (arg_name), "argL%d", index); 1490 oop arg = obj_field(mh, arg_name); 1491 if (arg != nullptr) { 1492 RecordLocation fp(this, "%s", arg_name); 1493 if (arg->klass()->is_instance_klass()) { 1494 InstanceKlass* ik2 = InstanceKlass::cast(arg->klass()); 1495 record_best_dyno_loc(ik2); 1496 record_call_site_obj(thread, arg); 1497 } 1498 } else { 1499 break; 1500 } 1501 } 1502 } 1503 } 1504 1505 // Process an object found at an invokedynamic/invokehandle call site and record any dynamic locations. 1506 // Types currently supported are MethodHandle and CallSite. 1507 // The object is typically the "appendix" object, or Bootstrap Method (BSM) object. 1508 void ciEnv::record_call_site_obj(Thread* thread, oop obj) 1509 { 1510 if (obj != nullptr) { 1511 if (java_lang_invoke_MethodHandle::is_instance(obj)) { 1512 record_mh(thread, obj); 1513 } else if (java_lang_invoke_ConstantCallSite::is_instance(obj)) { 1514 oop target = java_lang_invoke_CallSite::target(obj); 1515 if (target->klass()->is_instance_klass()) { 1516 RecordLocation fp(this, "target"); 1517 InstanceKlass* ik = InstanceKlass::cast(target->klass()); 1518 record_best_dyno_loc(ik); 1519 } 1520 } 1521 } 1522 } 1523 1524 // Process an adapter Method* found at an invokedynamic/invokehandle call site and record any dynamic locations. 1525 void ciEnv::record_call_site_method(Thread* thread, Method* adapter) { 1526 InstanceKlass* holder = adapter->method_holder(); 1527 if (!holder->is_hidden()) { 1528 return; 1529 } 1530 RecordLocation fp(this, "<adapter>"); 1531 record_best_dyno_loc(holder); 1532 } 1533 1534 // Process an invokedynamic call site and record any dynamic locations. 1535 void ciEnv::process_invokedynamic(const constantPoolHandle &cp, int indy_index, JavaThread* thread) { 1536 ResolvedIndyEntry* indy_info = cp->resolved_indy_entry_at(indy_index); 1537 if (indy_info->method() != nullptr) { 1538 // process the adapter 1539 Method* adapter = indy_info->method(); 1540 record_call_site_method(thread, adapter); 1541 // process the appendix 1542 oop appendix = cp->resolved_reference_from_indy(indy_index); 1543 { 1544 RecordLocation fp(this, "<appendix>"); 1545 record_call_site_obj(thread, appendix); 1546 } 1547 // process the BSM 1548 int pool_index = indy_info->constant_pool_index(); 1549 BootstrapInfo bootstrap_specifier(cp, pool_index, indy_index); 1550 oop bsm = cp->resolve_possibly_cached_constant_at(bootstrap_specifier.bsm_index(), thread); 1551 { 1552 RecordLocation fp(this, "<bsm>"); 1553 record_call_site_obj(thread, bsm); 1554 } 1555 } 1556 } 1557 1558 // Process an invokehandle call site and record any dynamic locations. 1559 void ciEnv::process_invokehandle(const constantPoolHandle &cp, int index, JavaThread* thread) { 1560 const int holder_index = cp->klass_ref_index_at(index, Bytecodes::_invokehandle); 1561 if (!cp->tag_at(holder_index).is_klass()) { 1562 return; // not resolved 1563 } 1564 Klass* holder = ConstantPool::klass_at_if_loaded(cp, holder_index); 1565 Symbol* name = cp->name_ref_at(index, Bytecodes::_invokehandle); 1566 if (MethodHandles::is_signature_polymorphic_name(holder, name)) { 1567 ResolvedMethodEntry* method_entry = cp->resolved_method_entry_at(index); 1568 if (method_entry->is_resolved(Bytecodes::_invokehandle)) { 1569 // process the adapter 1570 Method* adapter = method_entry->method(); 1571 oop appendix = cp->cache()->appendix_if_resolved(method_entry); 1572 record_call_site_method(thread, adapter); 1573 // process the appendix 1574 { 1575 RecordLocation fp(this, "<appendix>"); 1576 record_call_site_obj(thread, appendix); 1577 } 1578 } 1579 } 1580 } 1581 1582 // Search the class hierarchy for dynamic classes reachable through dynamic call sites or 1583 // constant pool entries and record for future lookup. 1584 void ciEnv::find_dynamic_call_sites() { 1585 _dyno_klasses = new (arena()) GrowableArray<const InstanceKlass*>(arena(), 100, 0, nullptr); 1586 _dyno_locs = new (arena()) GrowableArray<const char *>(arena(), 100, 0, nullptr); 1587 1588 // Iterate over the class hierarchy 1589 for (ClassHierarchyIterator iter(vmClasses::Object_klass()); !iter.done(); iter.next()) { 1590 Klass* sub = iter.klass(); 1591 if (sub->is_instance_klass()) { 1592 InstanceKlass *isub = InstanceKlass::cast(sub); 1593 InstanceKlass* ik = isub; 1594 if (!ik->is_linked()) { 1595 continue; 1596 } 1597 if (ik->is_hidden()) { 1598 continue; 1599 } 1600 JavaThread* thread = JavaThread::current(); 1601 const constantPoolHandle pool(thread, ik->constants()); 1602 1603 // Look for invokedynamic/invokehandle call sites 1604 for (int i = 0; i < ik->methods()->length(); ++i) { 1605 Method* m = ik->methods()->at(i); 1606 1607 BytecodeStream bcs(methodHandle(thread, m)); 1608 while (!bcs.is_last_bytecode()) { 1609 Bytecodes::Code opcode = bcs.next(); 1610 opcode = bcs.raw_code(); 1611 switch (opcode) { 1612 case Bytecodes::_invokedynamic: 1613 case Bytecodes::_invokehandle: { 1614 RecordLocation fp(this, "@bci %s %s %s %d", 1615 ik->name()->as_quoted_ascii(), 1616 m->name()->as_quoted_ascii(), m->signature()->as_quoted_ascii(), 1617 bcs.bci()); 1618 if (opcode == Bytecodes::_invokedynamic) { 1619 int index = bcs.get_index_u4(); 1620 process_invokedynamic(pool, index, thread); 1621 } else { 1622 assert(opcode == Bytecodes::_invokehandle, "new switch label added?"); 1623 int cp_cache_index = bcs.get_index_u2(); 1624 process_invokehandle(pool, cp_cache_index, thread); 1625 } 1626 break; 1627 } 1628 default: 1629 break; 1630 } 1631 } 1632 } 1633 1634 // Look for MethodHandle constant pool entries 1635 RecordLocation fp(this, "@cpi %s", ik->name()->as_quoted_ascii()); 1636 int len = pool->length(); 1637 for (int i = 0; i < len; ++i) { 1638 if (pool->tag_at(i).is_method_handle()) { 1639 bool found_it; 1640 oop mh = pool->find_cached_constant_at(i, found_it, thread); 1641 if (mh != nullptr) { 1642 RecordLocation fp(this, "%d", i); 1643 record_mh(thread, mh); 1644 } 1645 } 1646 } 1647 } 1648 } 1649 } 1650 1651 void ciEnv::dump_compile_data(outputStream* out) { 1652 CompileTask* task = this->task(); 1653 if (task) { 1654 #ifdef COMPILER2 1655 if (ReplayReduce && compiler_data() != nullptr) { 1656 // Dump C2 "reduced" inlining data. 1657 ((Compile*)compiler_data())->dump_inline_data_reduced(out); 1658 } 1659 #endif 1660 Method* method = task->method(); 1661 int entry_bci = task->osr_bci(); 1662 int comp_level = task->comp_level(); 1663 out->print("compile "); 1664 get_method(method)->dump_name_as_ascii(out); 1665 out->print(" %d %d", entry_bci, comp_level); 1666 if (compiler_data() != nullptr) { 1667 if (is_c2_compile(comp_level)) { 1668 #ifdef COMPILER2 1669 // Dump C2 inlining data. 1670 ((Compile*)compiler_data())->dump_inline_data(out); 1671 #endif 1672 } else if (is_c1_compile(comp_level)) { 1673 #ifdef COMPILER1 1674 // Dump C1 inlining data. 1675 ((Compilation*)compiler_data())->dump_inline_data(out); 1676 #endif 1677 } 1678 } 1679 out->cr(); 1680 } 1681 } 1682 1683 // Called from VM error reporter, so be careful. 1684 // Don't safepoint or acquire any locks. 1685 // 1686 void ciEnv::dump_replay_data_helper(outputStream* out) { 1687 NoSafepointVerifier no_safepoint; 1688 ResourceMark rm; 1689 1690 assert(this->task() != nullptr, "task must not be null"); 1691 1692 dump_replay_data_version(out); 1693 #if INCLUDE_JVMTI 1694 out->print_cr("JvmtiExport can_access_local_variables %d", _jvmti_can_access_local_variables); 1695 out->print_cr("JvmtiExport can_hotswap_or_post_breakpoint %d", _jvmti_can_hotswap_or_post_breakpoint); 1696 out->print_cr("JvmtiExport can_post_on_exceptions %d", _jvmti_can_post_on_exceptions); 1697 #endif // INCLUDE_JVMTI 1698 1699 find_dynamic_call_sites(); 1700 1701 GrowableArray<ciMetadata*>* objects = _factory->get_ci_metadata(); 1702 out->print_cr("# %d ciObject found", objects->length()); 1703 1704 // The very first entry is the InstanceKlass of the root method of the current compilation. 1705 ciInstanceKlass::dump_replay_instanceKlass(out, task()->method()->method_holder()); 1706 1707 for (int i = 0; i < objects->length(); i++) { 1708 objects->at(i)->dump_replay_data(out); 1709 } 1710 1711 dump_compile_data(out); 1712 out->flush(); 1713 } 1714 1715 // Called from VM error reporter, so be careful. 1716 // Don't safepoint or acquire any locks. 1717 // 1718 void ciEnv::dump_replay_data_unsafe(outputStream* out) { 1719 GUARDED_VM_ENTRY( 1720 dump_replay_data_helper(out); 1721 ) 1722 } 1723 1724 void ciEnv::dump_replay_data(outputStream* out) { 1725 GUARDED_VM_ENTRY( 1726 MutexLocker ml(Compile_lock); 1727 dump_replay_data_helper(out); 1728 ) 1729 } 1730 1731 void ciEnv::dump_replay_data(int compile_id) { 1732 char buffer[64]; 1733 int ret = jio_snprintf(buffer, sizeof(buffer), "replay_pid%d_compid%d.log", os::current_process_id(), compile_id); 1734 if (ret > 0) { 1735 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 1736 if (fd != -1) { 1737 FILE* replay_data_file = os::fdopen(fd, "w"); 1738 if (replay_data_file != nullptr) { 1739 fileStream replay_data_stream(replay_data_file, /*need_close=*/true); 1740 dump_replay_data(&replay_data_stream); 1741 tty->print_cr("# Compiler replay data is saved as: %s", buffer); 1742 } else { 1743 tty->print_cr("# Can't open file to dump replay data."); 1744 close(fd); 1745 } 1746 } 1747 } 1748 } 1749 1750 void ciEnv::dump_inline_data(int compile_id) { 1751 char buffer[64]; 1752 int ret = jio_snprintf(buffer, sizeof(buffer), "inline_pid%d_compid%d.log", os::current_process_id(), compile_id); 1753 if (ret > 0) { 1754 int fd = os::open(buffer, O_RDWR | O_CREAT | O_TRUNC, 0666); 1755 if (fd != -1) { 1756 FILE* inline_data_file = os::fdopen(fd, "w"); 1757 if (inline_data_file != nullptr) { 1758 fileStream replay_data_stream(inline_data_file, /*need_close=*/true); 1759 GUARDED_VM_ENTRY( 1760 MutexLocker ml(Compile_lock); 1761 dump_replay_data_version(&replay_data_stream); 1762 dump_compile_data(&replay_data_stream); 1763 ) 1764 replay_data_stream.flush(); 1765 tty->print("# Compiler inline data is saved as: "); 1766 tty->print_cr("%s", buffer); 1767 } else { 1768 tty->print_cr("# Can't open file to dump inline data."); 1769 close(fd); 1770 } 1771 } 1772 } 1773 } 1774 1775 void ciEnv::dump_replay_data_version(outputStream* out) { 1776 out->print_cr("version %d", REPLAY_VERSION); 1777 } 1778 1779 bool ciEnv::is_precompiled() { 1780 return (task() != nullptr) && (task()->compile_reason() == CompileTask::Reason_Precompile || 1781 task()->compile_reason() == CompileTask::Reason_PrecompileForPreload); 1782 } 1783 1784 bool ciEnv::is_fully_initialized(InstanceKlass* ik) { 1785 assert(is_precompiled(), ""); 1786 if (task()->method()->method_holder() == ik) { 1787 return true; // FIXME: may be too strong; being_initialized, at least 1788 } 1789 switch (task()->compile_reason()) { 1790 case CompileTask::Reason_Precompile: { 1791 // check init dependencies 1792 MethodTrainingData* mtd = nullptr; 1793 GUARDED_VM_ENTRY(mtd = MethodTrainingData::find(methodHandle(Thread::current(), task()->method())); ) 1794 if (mtd != nullptr) { 1795 CompileTrainingData* ctd = mtd->last_toplevel_compile(task()->comp_level()); 1796 if (ctd != nullptr) { 1797 for (int i = 0; i < ctd->init_dep_count(); i++) { 1798 KlassTrainingData* ktd = ctd->init_dep(i); 1799 if (ktd->has_holder() && (ktd->holder() == ik)) { 1800 log_trace(precompile)("%d: init_dependency: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name()); 1801 return true; // init dependency present 1802 } 1803 } 1804 } 1805 } 1806 return false; // no init dependency 1807 } 1808 case CompileTask::Reason_PrecompileForPreload: { 1809 // FIXME: assumes that all shared classes are initialized 1810 if (ik->is_shared()) { 1811 return true; // class init barriers 1812 } 1813 if (CDSConfig::is_dumping_final_static_archive() && ArchiveBuilder::is_active() && 1814 ArchiveBuilder::current()->has_been_archived((address)ik)) { 1815 return true; // class init barriers 1816 } 1817 return false; 1818 } 1819 default: fatal("%s", CompileTask::reason_name(task()->compile_reason())); 1820 } 1821 return false; 1822 } 1823 1824 InstanceKlass::ClassState ciEnv::compute_init_state_for_precompiled(InstanceKlass* ik) { 1825 ASSERT_IN_VM; 1826 assert(is_precompiled(), ""); 1827 ResourceMark rm; 1828 if (is_fully_initialized(ik)) { 1829 log_trace(precompile)("%d: fully_initialized: %s", task()->compile_id(), ik->external_name()); 1830 return InstanceKlass::ClassState::fully_initialized; 1831 } else if (MetaspaceObj::is_shared(ik)) { 1832 guarantee(ik->is_loaded(), ""); // FIXME: assumes pre-loading by CDS; ik->is_linked() requires pre-linking 1833 log_trace(precompile)("%d: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name()); 1834 return ik->init_state(); // not yet initialized 1835 } else if (CDSConfig::is_dumping_final_static_archive() && ArchiveBuilder::is_active()) { 1836 if (!ArchiveBuilder::current()->has_been_archived((address)ik)) { 1837 fatal("New workflow: should not compile code for unarchived class: %s", ik->external_name()); 1838 } 1839 guarantee(ik->is_loaded(), ""); 1840 log_trace(precompile)("%d: %s: %s", task()->compile_id(), InstanceKlass::state2name(ik->init_state()), ik->external_name()); 1841 return ik->init_state(); // not yet initialized 1842 } else { 1843 // Not present in the archive. 1844 fatal("unloaded: %s", ik->external_name()); 1845 // guarantee(SystemDictionaryShared::lookup_init_state(ik) == ik->init_state(), ""); 1846 log_trace(precompile)("%d: allocated: %s", task()->compile_id(), ik->external_name()); 1847 return InstanceKlass::ClassState::allocated; // not yet linked 1848 } 1849 }