compiler_driver.cc revision e549da59446a9fb986fbf02fe4cd2e3d610bd051
1/* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "compiler_driver.h" 18 19#define ATRACE_TAG ATRACE_TAG_DALVIK 20#include <utils/Trace.h> 21 22#include <vector> 23#include <unistd.h> 24 25#include "base/stl_util.h" 26#include "base/timing_logger.h" 27#include "class_linker.h" 28#include "dex_compilation_unit.h" 29#include "dex_file-inl.h" 30#include "dex/verification_results.h" 31#include "dex/verified_method.h" 32#include "dex/quick/dex_file_method_inliner.h" 33#include "jni_internal.h" 34#include "object_utils.h" 35#include "runtime.h" 36#include "gc/accounting/card_table-inl.h" 37#include "gc/accounting/heap_bitmap.h" 38#include "gc/space/space.h" 39#include "mirror/art_field-inl.h" 40#include "mirror/art_method-inl.h" 41#include "mirror/class_loader.h" 42#include "mirror/class-inl.h" 43#include "mirror/dex_cache-inl.h" 44#include "mirror/object-inl.h" 45#include "mirror/object_array-inl.h" 46#include "mirror/throwable.h" 47#include "scoped_thread_state_change.h" 48#include "ScopedLocalRef.h" 49#include "thread.h" 50#include "thread_pool.h" 51#include "trampolines/trampoline_compiler.h" 52#include "verifier/method_verifier.h" 53#include "verifier/method_verifier-inl.h" 54 55#if defined(ART_USE_PORTABLE_COMPILER) 56#include "elf_writer_mclinker.h" 57#else 58#include "elf_writer_quick.h" 59#endif 60 61namespace art { 62 63static double Percentage(size_t x, size_t y) { 64 return 100.0 * (static_cast<double>(x)) / (static_cast<double>(x + y)); 65} 66 67static void DumpStat(size_t x, size_t y, const char* str) { 68 if (x == 0 && y == 0) { 69 return; 70 } 71 LOG(INFO) << Percentage(x, y) << "% of " << str << " for " << (x + y) << " cases"; 72} 73 74class AOTCompilationStats { 75 public: 76 AOTCompilationStats() 77 : stats_lock_("AOT compilation statistics lock"), 78 types_in_dex_cache_(0), types_not_in_dex_cache_(0), 79 strings_in_dex_cache_(0), strings_not_in_dex_cache_(0), 80 resolved_types_(0), unresolved_types_(0), 81 resolved_instance_fields_(0), unresolved_instance_fields_(0), 82 resolved_local_static_fields_(0), resolved_static_fields_(0), unresolved_static_fields_(0), 83 type_based_devirtualization_(0), 84 safe_casts_(0), not_safe_casts_(0) { 85 for (size_t i = 0; i <= kMaxInvokeType; i++) { 86 resolved_methods_[i] = 0; 87 unresolved_methods_[i] = 0; 88 virtual_made_direct_[i] = 0; 89 direct_calls_to_boot_[i] = 0; 90 direct_methods_to_boot_[i] = 0; 91 } 92 } 93 94 void Dump() { 95 DumpStat(types_in_dex_cache_, types_not_in_dex_cache_, "types known to be in dex cache"); 96 DumpStat(strings_in_dex_cache_, strings_not_in_dex_cache_, "strings known to be in dex cache"); 97 DumpStat(resolved_types_, unresolved_types_, "types resolved"); 98 DumpStat(resolved_instance_fields_, unresolved_instance_fields_, "instance fields resolved"); 99 DumpStat(resolved_local_static_fields_ + resolved_static_fields_, unresolved_static_fields_, 100 "static fields resolved"); 101 DumpStat(resolved_local_static_fields_, resolved_static_fields_ + unresolved_static_fields_, 102 "static fields local to a class"); 103 DumpStat(safe_casts_, not_safe_casts_, "check-casts removed based on type information"); 104 // Note, the code below subtracts the stat value so that when added to the stat value we have 105 // 100% of samples. TODO: clean this up. 106 DumpStat(type_based_devirtualization_, 107 resolved_methods_[kVirtual] + unresolved_methods_[kVirtual] + 108 resolved_methods_[kInterface] + unresolved_methods_[kInterface] - 109 type_based_devirtualization_, 110 "virtual/interface calls made direct based on type information"); 111 112 for (size_t i = 0; i <= kMaxInvokeType; i++) { 113 std::ostringstream oss; 114 oss << static_cast<InvokeType>(i) << " methods were AOT resolved"; 115 DumpStat(resolved_methods_[i], unresolved_methods_[i], oss.str().c_str()); 116 if (virtual_made_direct_[i] > 0) { 117 std::ostringstream oss2; 118 oss2 << static_cast<InvokeType>(i) << " methods made direct"; 119 DumpStat(virtual_made_direct_[i], 120 resolved_methods_[i] + unresolved_methods_[i] - virtual_made_direct_[i], 121 oss2.str().c_str()); 122 } 123 if (direct_calls_to_boot_[i] > 0) { 124 std::ostringstream oss2; 125 oss2 << static_cast<InvokeType>(i) << " method calls are direct into boot"; 126 DumpStat(direct_calls_to_boot_[i], 127 resolved_methods_[i] + unresolved_methods_[i] - direct_calls_to_boot_[i], 128 oss2.str().c_str()); 129 } 130 if (direct_methods_to_boot_[i] > 0) { 131 std::ostringstream oss2; 132 oss2 << static_cast<InvokeType>(i) << " method calls have methods in boot"; 133 DumpStat(direct_methods_to_boot_[i], 134 resolved_methods_[i] + unresolved_methods_[i] - direct_methods_to_boot_[i], 135 oss2.str().c_str()); 136 } 137 } 138 } 139 140// Allow lossy statistics in non-debug builds. 141#ifndef NDEBUG 142#define STATS_LOCK() MutexLock mu(Thread::Current(), stats_lock_) 143#else 144#define STATS_LOCK() 145#endif 146 147 void TypeInDexCache() { 148 STATS_LOCK(); 149 types_in_dex_cache_++; 150 } 151 152 void TypeNotInDexCache() { 153 STATS_LOCK(); 154 types_not_in_dex_cache_++; 155 } 156 157 void StringInDexCache() { 158 STATS_LOCK(); 159 strings_in_dex_cache_++; 160 } 161 162 void StringNotInDexCache() { 163 STATS_LOCK(); 164 strings_not_in_dex_cache_++; 165 } 166 167 void TypeDoesntNeedAccessCheck() { 168 STATS_LOCK(); 169 resolved_types_++; 170 } 171 172 void TypeNeedsAccessCheck() { 173 STATS_LOCK(); 174 unresolved_types_++; 175 } 176 177 void ResolvedInstanceField() { 178 STATS_LOCK(); 179 resolved_instance_fields_++; 180 } 181 182 void UnresolvedInstanceField() { 183 STATS_LOCK(); 184 unresolved_instance_fields_++; 185 } 186 187 void ResolvedLocalStaticField() { 188 STATS_LOCK(); 189 resolved_local_static_fields_++; 190 } 191 192 void ResolvedStaticField() { 193 STATS_LOCK(); 194 resolved_static_fields_++; 195 } 196 197 void UnresolvedStaticField() { 198 STATS_LOCK(); 199 unresolved_static_fields_++; 200 } 201 202 // Indicate that type information from the verifier led to devirtualization. 203 void PreciseTypeDevirtualization() { 204 STATS_LOCK(); 205 type_based_devirtualization_++; 206 } 207 208 // Indicate that a method of the given type was resolved at compile time. 209 void ResolvedMethod(InvokeType type) { 210 DCHECK_LE(type, kMaxInvokeType); 211 STATS_LOCK(); 212 resolved_methods_[type]++; 213 } 214 215 // Indicate that a method of the given type was unresolved at compile time as it was in an 216 // unknown dex file. 217 void UnresolvedMethod(InvokeType type) { 218 DCHECK_LE(type, kMaxInvokeType); 219 STATS_LOCK(); 220 unresolved_methods_[type]++; 221 } 222 223 // Indicate that a type of virtual method dispatch has been converted into a direct method 224 // dispatch. 225 void VirtualMadeDirect(InvokeType type) { 226 DCHECK(type == kVirtual || type == kInterface || type == kSuper); 227 STATS_LOCK(); 228 virtual_made_direct_[type]++; 229 } 230 231 // Indicate that a method of the given type was able to call directly into boot. 232 void DirectCallsToBoot(InvokeType type) { 233 DCHECK_LE(type, kMaxInvokeType); 234 STATS_LOCK(); 235 direct_calls_to_boot_[type]++; 236 } 237 238 // Indicate that a method of the given type was able to be resolved directly from boot. 239 void DirectMethodsToBoot(InvokeType type) { 240 DCHECK_LE(type, kMaxInvokeType); 241 STATS_LOCK(); 242 direct_methods_to_boot_[type]++; 243 } 244 245 // A check-cast could be eliminated due to verifier type analysis. 246 void SafeCast() { 247 STATS_LOCK(); 248 safe_casts_++; 249 } 250 251 // A check-cast couldn't be eliminated due to verifier type analysis. 252 void NotASafeCast() { 253 STATS_LOCK(); 254 not_safe_casts_++; 255 } 256 257 private: 258 Mutex stats_lock_; 259 260 size_t types_in_dex_cache_; 261 size_t types_not_in_dex_cache_; 262 263 size_t strings_in_dex_cache_; 264 size_t strings_not_in_dex_cache_; 265 266 size_t resolved_types_; 267 size_t unresolved_types_; 268 269 size_t resolved_instance_fields_; 270 size_t unresolved_instance_fields_; 271 272 size_t resolved_local_static_fields_; 273 size_t resolved_static_fields_; 274 size_t unresolved_static_fields_; 275 // Type based devirtualization for invoke interface and virtual. 276 size_t type_based_devirtualization_; 277 278 size_t resolved_methods_[kMaxInvokeType + 1]; 279 size_t unresolved_methods_[kMaxInvokeType + 1]; 280 size_t virtual_made_direct_[kMaxInvokeType + 1]; 281 size_t direct_calls_to_boot_[kMaxInvokeType + 1]; 282 size_t direct_methods_to_boot_[kMaxInvokeType + 1]; 283 284 size_t safe_casts_; 285 size_t not_safe_casts_; 286 287 DISALLOW_COPY_AND_ASSIGN(AOTCompilationStats); 288}; 289 290extern "C" void ArtInitCompilerContext(art::CompilerDriver& driver); 291extern "C" void ArtInitQuickCompilerContext(art::CompilerDriver& driver); 292 293extern "C" void ArtUnInitCompilerContext(art::CompilerDriver& driver); 294extern "C" void ArtUnInitQuickCompilerContext(art::CompilerDriver& driver); 295 296extern "C" art::CompiledMethod* ArtCompileMethod(art::CompilerDriver& driver, 297 const art::DexFile::CodeItem* code_item, 298 uint32_t access_flags, 299 art::InvokeType invoke_type, 300 uint16_t class_def_idx, 301 uint32_t method_idx, 302 jobject class_loader, 303 const art::DexFile& dex_file); 304extern "C" art::CompiledMethod* ArtQuickCompileMethod(art::CompilerDriver& compiler, 305 const art::DexFile::CodeItem* code_item, 306 uint32_t access_flags, 307 art::InvokeType invoke_type, 308 uint16_t class_def_idx, 309 uint32_t method_idx, 310 jobject class_loader, 311 const art::DexFile& dex_file); 312 313extern "C" art::CompiledMethod* ArtCompileDEX(art::CompilerDriver& compiler, 314 const art::DexFile::CodeItem* code_item, 315 uint32_t access_flags, 316 art::InvokeType invoke_type, 317 uint16_t class_def_idx, 318 uint32_t method_idx, 319 jobject class_loader, 320 const art::DexFile& dex_file); 321#ifdef ART_SEA_IR_MODE 322extern "C" art::CompiledMethod* SeaIrCompileMethod(art::CompilerDriver& compiler, 323 const art::DexFile::CodeItem* code_item, 324 uint32_t access_flags, 325 art::InvokeType invoke_type, 326 uint16_t class_def_idx, 327 uint32_t method_idx, 328 jobject class_loader, 329 const art::DexFile& dex_file); 330#endif 331extern "C" art::CompiledMethod* ArtLLVMJniCompileMethod(art::CompilerDriver& driver, 332 uint32_t access_flags, uint32_t method_idx, 333 const art::DexFile& dex_file); 334 335extern "C" art::CompiledMethod* ArtQuickJniCompileMethod(art::CompilerDriver& compiler, 336 uint32_t access_flags, uint32_t method_idx, 337 const art::DexFile& dex_file); 338 339extern "C" void compilerLLVMSetBitcodeFileName(art::CompilerDriver& driver, 340 std::string const& filename); 341 342CompilerDriver::CompilerDriver(VerificationResults* verification_results, 343 DexFileToMethodInlinerMap* method_inliner_map, 344 CompilerBackend compiler_backend, InstructionSet instruction_set, 345 InstructionSetFeatures instruction_set_features, 346 bool image, DescriptorSet* image_classes, size_t thread_count, 347 bool dump_stats, bool dump_passes, CumulativeLogger* timer) 348 : verification_results_(verification_results), 349 method_inliner_map_(method_inliner_map), 350 compiler_backend_(compiler_backend), 351 instruction_set_(instruction_set), 352 instruction_set_features_(instruction_set_features), 353 freezing_constructor_lock_("freezing constructor lock"), 354 compiled_classes_lock_("compiled classes lock"), 355 compiled_methods_lock_("compiled method lock"), 356 image_(image), 357 image_classes_(image_classes), 358 thread_count_(thread_count), 359 start_ns_(0), 360 stats_(new AOTCompilationStats), 361 dump_stats_(dump_stats), 362 dump_passes_(dump_passes), 363 timings_logger_(timer), 364 compiler_library_(NULL), 365 compiler_(NULL), 366 compiler_context_(NULL), 367 jni_compiler_(NULL), 368 compiler_enable_auto_elf_loading_(NULL), 369 compiler_get_method_code_addr_(NULL), 370 support_boot_image_fixup_(instruction_set != kMips), 371 dedupe_code_("dedupe code"), 372 dedupe_mapping_table_("dedupe mapping table"), 373 dedupe_vmap_table_("dedupe vmap table"), 374 dedupe_gc_map_("dedupe gc map") { 375 376 CHECK_PTHREAD_CALL(pthread_key_create, (&tls_key_, NULL), "compiler tls key"); 377 378 // TODO: more work needed to combine initializations and allow per-method backend selection 379 typedef void (*InitCompilerContextFn)(CompilerDriver&); 380 InitCompilerContextFn init_compiler_context; 381 if (compiler_backend_ == kPortable) { 382 // Initialize compiler_context_ 383 init_compiler_context = reinterpret_cast<void (*)(CompilerDriver&)>(ArtInitCompilerContext); 384 compiler_ = reinterpret_cast<CompilerFn>(ArtCompileMethod); 385 } else { 386 init_compiler_context = reinterpret_cast<void (*)(CompilerDriver&)>(ArtInitQuickCompilerContext); 387 compiler_ = reinterpret_cast<CompilerFn>(ArtQuickCompileMethod); 388 } 389 390 dex_to_dex_compiler_ = reinterpret_cast<DexToDexCompilerFn>(ArtCompileDEX); 391 392#ifdef ART_SEA_IR_MODE 393 sea_ir_compiler_ = NULL; 394 if (Runtime::Current()->IsSeaIRMode()) { 395 sea_ir_compiler_ = reinterpret_cast<CompilerFn>(SeaIrCompileMethod); 396 } 397#endif 398 399 init_compiler_context(*this); 400 401 if (compiler_backend_ == kPortable) { 402 jni_compiler_ = reinterpret_cast<JniCompilerFn>(ArtLLVMJniCompileMethod); 403 } else { 404 jni_compiler_ = reinterpret_cast<JniCompilerFn>(ArtQuickJniCompileMethod); 405 } 406 407 CHECK(!Runtime::Current()->IsStarted()); 408 if (!image_) { 409 CHECK(image_classes_.get() == NULL); 410 } 411} 412 413std::vector<uint8_t>* CompilerDriver::DeduplicateCode(const std::vector<uint8_t>& code) { 414 return dedupe_code_.Add(Thread::Current(), code); 415} 416 417std::vector<uint8_t>* CompilerDriver::DeduplicateMappingTable(const std::vector<uint8_t>& code) { 418 return dedupe_mapping_table_.Add(Thread::Current(), code); 419} 420 421std::vector<uint8_t>* CompilerDriver::DeduplicateVMapTable(const std::vector<uint8_t>& code) { 422 return dedupe_vmap_table_.Add(Thread::Current(), code); 423} 424 425std::vector<uint8_t>* CompilerDriver::DeduplicateGCMap(const std::vector<uint8_t>& code) { 426 return dedupe_gc_map_.Add(Thread::Current(), code); 427} 428 429CompilerDriver::~CompilerDriver() { 430 Thread* self = Thread::Current(); 431 { 432 MutexLock mu(self, compiled_classes_lock_); 433 STLDeleteValues(&compiled_classes_); 434 } 435 { 436 MutexLock mu(self, compiled_methods_lock_); 437 STLDeleteValues(&compiled_methods_); 438 } 439 { 440 MutexLock mu(self, compiled_methods_lock_); 441 STLDeleteElements(&code_to_patch_); 442 } 443 { 444 MutexLock mu(self, compiled_methods_lock_); 445 STLDeleteElements(&methods_to_patch_); 446 } 447 { 448 MutexLock mu(self, compiled_methods_lock_); 449 STLDeleteElements(&classes_to_patch_); 450 } 451 CHECK_PTHREAD_CALL(pthread_key_delete, (tls_key_), "delete tls key"); 452 typedef void (*UninitCompilerContextFn)(CompilerDriver&); 453 UninitCompilerContextFn uninit_compiler_context; 454 // Uninitialize compiler_context_ 455 // TODO: rework to combine initialization/uninitialization 456 if (compiler_backend_ == kPortable) { 457 uninit_compiler_context = reinterpret_cast<void (*)(CompilerDriver&)>(ArtUnInitCompilerContext); 458 } else { 459 uninit_compiler_context = reinterpret_cast<void (*)(CompilerDriver&)>(ArtUnInitQuickCompilerContext); 460 } 461 uninit_compiler_context(*this); 462} 463 464CompilerTls* CompilerDriver::GetTls() { 465 // Lazily create thread-local storage 466 CompilerTls* res = static_cast<CompilerTls*>(pthread_getspecific(tls_key_)); 467 if (res == NULL) { 468 res = new CompilerTls(); 469 CHECK_PTHREAD_CALL(pthread_setspecific, (tls_key_, res), "compiler tls"); 470 } 471 return res; 472} 473 474const std::vector<uint8_t>* CompilerDriver::CreateInterpreterToInterpreterBridge() const { 475 return CreateTrampoline(instruction_set_, kInterpreterAbi, 476 INTERPRETER_ENTRYPOINT_OFFSET(pInterpreterToInterpreterBridge)); 477} 478 479const std::vector<uint8_t>* CompilerDriver::CreateInterpreterToCompiledCodeBridge() const { 480 return CreateTrampoline(instruction_set_, kInterpreterAbi, 481 INTERPRETER_ENTRYPOINT_OFFSET(pInterpreterToCompiledCodeBridge)); 482} 483 484const std::vector<uint8_t>* CompilerDriver::CreateJniDlsymLookup() const { 485 return CreateTrampoline(instruction_set_, kJniAbi, JNI_ENTRYPOINT_OFFSET(pDlsymLookup)); 486} 487 488const std::vector<uint8_t>* CompilerDriver::CreatePortableImtConflictTrampoline() const { 489 return CreateTrampoline(instruction_set_, kPortableAbi, 490 PORTABLE_ENTRYPOINT_OFFSET(pPortableImtConflictTrampoline)); 491} 492 493const std::vector<uint8_t>* CompilerDriver::CreatePortableResolutionTrampoline() const { 494 return CreateTrampoline(instruction_set_, kPortableAbi, 495 PORTABLE_ENTRYPOINT_OFFSET(pPortableResolutionTrampoline)); 496} 497 498const std::vector<uint8_t>* CompilerDriver::CreatePortableToInterpreterBridge() const { 499 return CreateTrampoline(instruction_set_, kPortableAbi, 500 PORTABLE_ENTRYPOINT_OFFSET(pPortableToInterpreterBridge)); 501} 502 503const std::vector<uint8_t>* CompilerDriver::CreateQuickImtConflictTrampoline() const { 504 return CreateTrampoline(instruction_set_, kQuickAbi, 505 QUICK_ENTRYPOINT_OFFSET(pQuickImtConflictTrampoline)); 506} 507 508const std::vector<uint8_t>* CompilerDriver::CreateQuickResolutionTrampoline() const { 509 return CreateTrampoline(instruction_set_, kQuickAbi, 510 QUICK_ENTRYPOINT_OFFSET(pQuickResolutionTrampoline)); 511} 512 513const std::vector<uint8_t>* CompilerDriver::CreateQuickToInterpreterBridge() const { 514 return CreateTrampoline(instruction_set_, kQuickAbi, 515 QUICK_ENTRYPOINT_OFFSET(pQuickToInterpreterBridge)); 516} 517 518void CompilerDriver::CompileAll(jobject class_loader, 519 const std::vector<const DexFile*>& dex_files, 520 TimingLogger& timings) { 521 DCHECK(!Runtime::Current()->IsStarted()); 522 UniquePtr<ThreadPool> thread_pool(new ThreadPool("Compiler driver thread pool", thread_count_ - 1)); 523 PreCompile(class_loader, dex_files, *thread_pool.get(), timings); 524 Compile(class_loader, dex_files, *thread_pool.get(), timings); 525 if (dump_stats_) { 526 stats_->Dump(); 527 } 528} 529 530static DexToDexCompilationLevel GetDexToDexCompilationlevel( 531 SirtRef<mirror::ClassLoader>& class_loader, const DexFile& dex_file, 532 const DexFile::ClassDef& class_def) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 533 const char* descriptor = dex_file.GetClassDescriptor(class_def); 534 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 535 mirror::Class* klass = class_linker->FindClass(descriptor, class_loader); 536 if (klass == NULL) { 537 Thread* self = Thread::Current(); 538 CHECK(self->IsExceptionPending()); 539 self->ClearException(); 540 return kDontDexToDexCompile; 541 } 542 // The verifier can only run on "quick" instructions at runtime (see usage of 543 // FindAccessedFieldAtDexPc and FindInvokedMethodAtDexPc in ThrowNullPointerExceptionFromDexPC 544 // function). Since image classes can be verified again while compiling an application, 545 // we must prevent the DEX-to-DEX compiler from introducing them. 546 // TODO: find a way to enable "quick" instructions for image classes and remove this check. 547 bool compiling_image_classes = class_loader.get() == nullptr; 548 if (compiling_image_classes) { 549 return kRequired; 550 } else if (klass->IsVerified()) { 551 // Class is verified so we can enable DEX-to-DEX compilation for performance. 552 return kOptimize; 553 } else if (klass->IsCompileTimeVerified()) { 554 // Class verification has soft-failed. Anyway, ensure at least correctness. 555 DCHECK_EQ(klass->GetStatus(), mirror::Class::kStatusRetryVerificationAtRuntime); 556 return kRequired; 557 } else { 558 // Class verification has failed: do not run DEX-to-DEX compilation. 559 return kDontDexToDexCompile; 560 } 561} 562 563void CompilerDriver::CompileOne(mirror::ArtMethod* method, TimingLogger& timings) { 564 DCHECK(!Runtime::Current()->IsStarted()); 565 Thread* self = Thread::Current(); 566 jobject jclass_loader; 567 const DexFile* dex_file; 568 uint16_t class_def_idx; 569 uint32_t method_idx = method->GetDexMethodIndex(); 570 uint32_t access_flags = method->GetAccessFlags(); 571 InvokeType invoke_type = method->GetInvokeType(); 572 { 573 ScopedObjectAccessUnchecked soa(self); 574 ScopedLocalRef<jobject> 575 local_class_loader(soa.Env(), 576 soa.AddLocalReference<jobject>(method->GetDeclaringClass()->GetClassLoader())); 577 jclass_loader = soa.Env()->NewGlobalRef(local_class_loader.get()); 578 // Find the dex_file 579 MethodHelper mh(method); 580 dex_file = &mh.GetDexFile(); 581 class_def_idx = mh.GetClassDefIndex(); 582 } 583 const DexFile::CodeItem* code_item = dex_file->GetCodeItem(method->GetCodeItemOffset()); 584 self->TransitionFromRunnableToSuspended(kNative); 585 586 std::vector<const DexFile*> dex_files; 587 dex_files.push_back(dex_file); 588 589 UniquePtr<ThreadPool> thread_pool(new ThreadPool("Compiler driver thread pool", 0U)); 590 PreCompile(jclass_loader, dex_files, *thread_pool.get(), timings); 591 592 // Can we run DEX-to-DEX compiler on this class ? 593 DexToDexCompilationLevel dex_to_dex_compilation_level = kDontDexToDexCompile; 594 { 595 ScopedObjectAccess soa(Thread::Current()); 596 const DexFile::ClassDef& class_def = dex_file->GetClassDef(class_def_idx); 597 SirtRef<mirror::ClassLoader> class_loader(soa.Self(), 598 soa.Decode<mirror::ClassLoader*>(jclass_loader)); 599 dex_to_dex_compilation_level = GetDexToDexCompilationlevel(class_loader, *dex_file, class_def); 600 } 601 CompileMethod(code_item, access_flags, invoke_type, class_def_idx, method_idx, jclass_loader, 602 *dex_file, dex_to_dex_compilation_level); 603 604 self->GetJniEnv()->DeleteGlobalRef(jclass_loader); 605 606 self->TransitionFromSuspendedToRunnable(); 607} 608 609void CompilerDriver::Resolve(jobject class_loader, const std::vector<const DexFile*>& dex_files, 610 ThreadPool& thread_pool, TimingLogger& timings) { 611 for (size_t i = 0; i != dex_files.size(); ++i) { 612 const DexFile* dex_file = dex_files[i]; 613 CHECK(dex_file != NULL); 614 ResolveDexFile(class_loader, *dex_file, thread_pool, timings); 615 } 616} 617 618void CompilerDriver::PreCompile(jobject class_loader, const std::vector<const DexFile*>& dex_files, 619 ThreadPool& thread_pool, TimingLogger& timings) { 620 LoadImageClasses(timings); 621 622 Resolve(class_loader, dex_files, thread_pool, timings); 623 624 Verify(class_loader, dex_files, thread_pool, timings); 625 626 InitializeClasses(class_loader, dex_files, thread_pool, timings); 627 628 UpdateImageClasses(timings); 629} 630 631bool CompilerDriver::IsImageClass(const char* descriptor) const { 632 if (!IsImage()) { 633 return true; 634 } else { 635 return image_classes_->find(descriptor) != image_classes_->end(); 636 } 637} 638 639static void ResolveExceptionsForMethod(MethodHelper* mh, 640 std::set<std::pair<uint16_t, const DexFile*> >& exceptions_to_resolve) 641 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 642 const DexFile::CodeItem* code_item = mh->GetCodeItem(); 643 if (code_item == NULL) { 644 return; // native or abstract method 645 } 646 if (code_item->tries_size_ == 0) { 647 return; // nothing to process 648 } 649 const byte* encoded_catch_handler_list = DexFile::GetCatchHandlerData(*code_item, 0); 650 size_t num_encoded_catch_handlers = DecodeUnsignedLeb128(&encoded_catch_handler_list); 651 for (size_t i = 0; i < num_encoded_catch_handlers; i++) { 652 int32_t encoded_catch_handler_size = DecodeSignedLeb128(&encoded_catch_handler_list); 653 bool has_catch_all = false; 654 if (encoded_catch_handler_size <= 0) { 655 encoded_catch_handler_size = -encoded_catch_handler_size; 656 has_catch_all = true; 657 } 658 for (int32_t j = 0; j < encoded_catch_handler_size; j++) { 659 uint16_t encoded_catch_handler_handlers_type_idx = 660 DecodeUnsignedLeb128(&encoded_catch_handler_list); 661 // Add to set of types to resolve if not already in the dex cache resolved types 662 if (!mh->IsResolvedTypeIdx(encoded_catch_handler_handlers_type_idx)) { 663 exceptions_to_resolve.insert( 664 std::pair<uint16_t, const DexFile*>(encoded_catch_handler_handlers_type_idx, 665 &mh->GetDexFile())); 666 } 667 // ignore address associated with catch handler 668 DecodeUnsignedLeb128(&encoded_catch_handler_list); 669 } 670 if (has_catch_all) { 671 // ignore catch all address 672 DecodeUnsignedLeb128(&encoded_catch_handler_list); 673 } 674 } 675} 676 677static bool ResolveCatchBlockExceptionsClassVisitor(mirror::Class* c, void* arg) 678 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 679 std::set<std::pair<uint16_t, const DexFile*> >* exceptions_to_resolve = 680 reinterpret_cast<std::set<std::pair<uint16_t, const DexFile*> >*>(arg); 681 MethodHelper mh; 682 for (size_t i = 0; i < c->NumVirtualMethods(); ++i) { 683 mirror::ArtMethod* m = c->GetVirtualMethod(i); 684 mh.ChangeMethod(m); 685 ResolveExceptionsForMethod(&mh, *exceptions_to_resolve); 686 } 687 for (size_t i = 0; i < c->NumDirectMethods(); ++i) { 688 mirror::ArtMethod* m = c->GetDirectMethod(i); 689 mh.ChangeMethod(m); 690 ResolveExceptionsForMethod(&mh, *exceptions_to_resolve); 691 } 692 return true; 693} 694 695static bool RecordImageClassesVisitor(mirror::Class* klass, void* arg) 696 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 697 CompilerDriver::DescriptorSet* image_classes = 698 reinterpret_cast<CompilerDriver::DescriptorSet*>(arg); 699 image_classes->insert(ClassHelper(klass).GetDescriptor()); 700 return true; 701} 702 703// Make a list of descriptors for classes to include in the image 704void CompilerDriver::LoadImageClasses(TimingLogger& timings) 705 LOCKS_EXCLUDED(Locks::mutator_lock_) { 706 if (!IsImage()) { 707 return; 708 } 709 710 timings.NewSplit("LoadImageClasses"); 711 // Make a first class to load all classes explicitly listed in the file 712 Thread* self = Thread::Current(); 713 ScopedObjectAccess soa(self); 714 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 715 for (auto it = image_classes_->begin(), end = image_classes_->end(); it != end;) { 716 const std::string& descriptor(*it); 717 SirtRef<mirror::Class> klass(self, class_linker->FindSystemClass(descriptor.c_str())); 718 if (klass.get() == NULL) { 719 VLOG(compiler) << "Failed to find class " << descriptor; 720 image_classes_->erase(it++); 721 self->ClearException(); 722 } else { 723 ++it; 724 } 725 } 726 727 // Resolve exception classes referenced by the loaded classes. The catch logic assumes 728 // exceptions are resolved by the verifier when there is a catch block in an interested method. 729 // Do this here so that exception classes appear to have been specified image classes. 730 std::set<std::pair<uint16_t, const DexFile*> > unresolved_exception_types; 731 SirtRef<mirror::Class> java_lang_Throwable(self, 732 class_linker->FindSystemClass("Ljava/lang/Throwable;")); 733 do { 734 unresolved_exception_types.clear(); 735 class_linker->VisitClasses(ResolveCatchBlockExceptionsClassVisitor, 736 &unresolved_exception_types); 737 for (const std::pair<uint16_t, const DexFile*>& exception_type : unresolved_exception_types) { 738 uint16_t exception_type_idx = exception_type.first; 739 const DexFile* dex_file = exception_type.second; 740 SirtRef<mirror::DexCache> dex_cache(self, class_linker->FindDexCache(*dex_file)); 741 SirtRef<mirror::ClassLoader> class_loader(self, nullptr); 742 SirtRef<mirror::Class> klass(self, class_linker->ResolveType(*dex_file, exception_type_idx, 743 dex_cache, class_loader)); 744 if (klass.get() == NULL) { 745 const DexFile::TypeId& type_id = dex_file->GetTypeId(exception_type_idx); 746 const char* descriptor = dex_file->GetTypeDescriptor(type_id); 747 LOG(FATAL) << "Failed to resolve class " << descriptor; 748 } 749 DCHECK(java_lang_Throwable->IsAssignableFrom(klass.get())); 750 } 751 // Resolving exceptions may load classes that reference more exceptions, iterate until no 752 // more are found 753 } while (!unresolved_exception_types.empty()); 754 755 // We walk the roots looking for classes so that we'll pick up the 756 // above classes plus any classes them depend on such super 757 // classes, interfaces, and the required ClassLinker roots. 758 class_linker->VisitClasses(RecordImageClassesVisitor, image_classes_.get()); 759 760 CHECK_NE(image_classes_->size(), 0U); 761} 762 763static void MaybeAddToImageClasses(mirror::Class* klass, CompilerDriver::DescriptorSet* image_classes) 764 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 765 while (!klass->IsObjectClass()) { 766 ClassHelper kh(klass); 767 const char* descriptor = kh.GetDescriptor(); 768 std::pair<CompilerDriver::DescriptorSet::iterator, bool> result = 769 image_classes->insert(descriptor); 770 if (result.second) { 771 VLOG(compiler) << "Adding " << descriptor << " to image classes"; 772 } else { 773 return; 774 } 775 for (size_t i = 0; i < kh.NumDirectInterfaces(); ++i) { 776 MaybeAddToImageClasses(kh.GetDirectInterface(i), image_classes); 777 } 778 if (klass->IsArrayClass()) { 779 MaybeAddToImageClasses(klass->GetComponentType(), image_classes); 780 } 781 klass = klass->GetSuperClass(); 782 } 783} 784 785void CompilerDriver::FindClinitImageClassesCallback(mirror::Object* object, void* arg) { 786 DCHECK(object != NULL); 787 DCHECK(arg != NULL); 788 CompilerDriver* compiler_driver = reinterpret_cast<CompilerDriver*>(arg); 789 MaybeAddToImageClasses(object->GetClass(), compiler_driver->image_classes_.get()); 790} 791 792void CompilerDriver::UpdateImageClasses(TimingLogger& timings) { 793 if (IsImage()) { 794 timings.NewSplit("UpdateImageClasses"); 795 796 // Update image_classes_ with classes for objects created by <clinit> methods. 797 Thread* self = Thread::Current(); 798 const char* old_cause = self->StartAssertNoThreadSuspension("ImageWriter"); 799 gc::Heap* heap = Runtime::Current()->GetHeap(); 800 // TODO: Image spaces only? 801 ScopedObjectAccess soa(Thread::Current()); 802 WriterMutexLock mu(self, *Locks::heap_bitmap_lock_); 803 heap->VisitObjects(FindClinitImageClassesCallback, this); 804 self->EndAssertNoThreadSuspension(old_cause); 805 } 806} 807 808bool CompilerDriver::CanAssumeTypeIsPresentInDexCache(const DexFile& dex_file, uint32_t type_idx) { 809 if (IsImage() && 810 IsImageClass(dex_file.StringDataByIdx(dex_file.GetTypeId(type_idx).descriptor_idx_))) { 811 if (kIsDebugBuild) { 812 ScopedObjectAccess soa(Thread::Current()); 813 mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); 814 mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); 815 CHECK(resolved_class != NULL); 816 } 817 stats_->TypeInDexCache(); 818 return true; 819 } else { 820 stats_->TypeNotInDexCache(); 821 return false; 822 } 823} 824 825bool CompilerDriver::CanAssumeStringIsPresentInDexCache(const DexFile& dex_file, 826 uint32_t string_idx) { 827 // See also Compiler::ResolveDexFile 828 829 bool result = false; 830 if (IsImage()) { 831 // We resolve all const-string strings when building for the image. 832 ScopedObjectAccess soa(Thread::Current()); 833 SirtRef<mirror::DexCache> dex_cache(soa.Self(), Runtime::Current()->GetClassLinker()->FindDexCache(dex_file)); 834 Runtime::Current()->GetClassLinker()->ResolveString(dex_file, string_idx, dex_cache); 835 result = true; 836 } 837 if (result) { 838 stats_->StringInDexCache(); 839 } else { 840 stats_->StringNotInDexCache(); 841 } 842 return result; 843} 844 845bool CompilerDriver::CanAccessTypeWithoutChecks(uint32_t referrer_idx, const DexFile& dex_file, 846 uint32_t type_idx, 847 bool* type_known_final, bool* type_known_abstract, 848 bool* equals_referrers_class) { 849 if (type_known_final != NULL) { 850 *type_known_final = false; 851 } 852 if (type_known_abstract != NULL) { 853 *type_known_abstract = false; 854 } 855 if (equals_referrers_class != NULL) { 856 *equals_referrers_class = false; 857 } 858 ScopedObjectAccess soa(Thread::Current()); 859 mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); 860 // Get type from dex cache assuming it was populated by the verifier 861 mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); 862 if (resolved_class == NULL) { 863 stats_->TypeNeedsAccessCheck(); 864 return false; // Unknown class needs access checks. 865 } 866 const DexFile::MethodId& method_id = dex_file.GetMethodId(referrer_idx); 867 if (equals_referrers_class != NULL) { 868 *equals_referrers_class = (method_id.class_idx_ == type_idx); 869 } 870 mirror::Class* referrer_class = dex_cache->GetResolvedType(method_id.class_idx_); 871 if (referrer_class == NULL) { 872 stats_->TypeNeedsAccessCheck(); 873 return false; // Incomplete referrer knowledge needs access check. 874 } 875 // Perform access check, will return true if access is ok or false if we're going to have to 876 // check this at runtime (for example for class loaders). 877 bool result = referrer_class->CanAccess(resolved_class); 878 if (result) { 879 stats_->TypeDoesntNeedAccessCheck(); 880 if (type_known_final != NULL) { 881 *type_known_final = resolved_class->IsFinal() && !resolved_class->IsArrayClass(); 882 } 883 if (type_known_abstract != NULL) { 884 *type_known_abstract = resolved_class->IsAbstract() && !resolved_class->IsArrayClass(); 885 } 886 } else { 887 stats_->TypeNeedsAccessCheck(); 888 } 889 return result; 890} 891 892bool CompilerDriver::CanAccessInstantiableTypeWithoutChecks(uint32_t referrer_idx, 893 const DexFile& dex_file, 894 uint32_t type_idx) { 895 ScopedObjectAccess soa(Thread::Current()); 896 mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); 897 // Get type from dex cache assuming it was populated by the verifier. 898 mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); 899 if (resolved_class == NULL) { 900 stats_->TypeNeedsAccessCheck(); 901 return false; // Unknown class needs access checks. 902 } 903 const DexFile::MethodId& method_id = dex_file.GetMethodId(referrer_idx); 904 mirror::Class* referrer_class = dex_cache->GetResolvedType(method_id.class_idx_); 905 if (referrer_class == NULL) { 906 stats_->TypeNeedsAccessCheck(); 907 return false; // Incomplete referrer knowledge needs access check. 908 } 909 // Perform access and instantiable checks, will return true if access is ok or false if we're 910 // going to have to check this at runtime (for example for class loaders). 911 bool result = referrer_class->CanAccess(resolved_class) && resolved_class->IsInstantiable(); 912 if (result) { 913 stats_->TypeDoesntNeedAccessCheck(); 914 } else { 915 stats_->TypeNeedsAccessCheck(); 916 } 917 return result; 918} 919 920bool CompilerDriver::CanEmbedTypeInCode(const DexFile& dex_file, uint32_t type_idx, 921 bool* is_type_initialized, bool* use_direct_type_ptr, 922 uintptr_t* direct_type_ptr) { 923 ScopedObjectAccess soa(Thread::Current()); 924 mirror::DexCache* dex_cache = Runtime::Current()->GetClassLinker()->FindDexCache(dex_file); 925 mirror::Class* resolved_class = dex_cache->GetResolvedType(type_idx); 926 if (resolved_class == nullptr) { 927 return false; 928 } 929 const bool compiling_boot = Runtime::Current()->GetHeap()->IsCompilingBoot(); 930 if (compiling_boot) { 931 // boot -> boot class pointers. 932 // True if the class is in the image at boot compiling time. 933 const bool is_image_class = IsImage() && IsImageClass( 934 dex_file.StringDataByIdx(dex_file.GetTypeId(type_idx).descriptor_idx_)); 935 // True if pc relative load works. 936 const bool support_boot_image_fixup = GetSupportBootImageFixup(); 937 if (is_image_class && support_boot_image_fixup) { 938 *is_type_initialized = resolved_class->IsInitialized(); 939 *use_direct_type_ptr = false; 940 *direct_type_ptr = 0; 941 return true; 942 } else { 943 return false; 944 } 945 } else { 946 // True if the class is in the image at app compiling time. 947 const bool class_in_image = 948 Runtime::Current()->GetHeap()->FindSpaceFromObject(resolved_class, false)->IsImageSpace(); 949 if (class_in_image) { 950 // boot -> app class pointers. 951 *is_type_initialized = resolved_class->IsInitialized(); 952 *use_direct_type_ptr = true; 953 *direct_type_ptr = reinterpret_cast<uintptr_t>(resolved_class); 954 return true; 955 } else { 956 // app -> app class pointers. 957 // Give up because app does not have an image and class 958 // isn't created at compile time. TODO: implement this 959 // if/when each app gets an image. 960 return false; 961 } 962 } 963} 964 965static mirror::Class* ComputeCompilingMethodsClass(ScopedObjectAccess& soa, 966 SirtRef<mirror::DexCache>& dex_cache, 967 const DexCompilationUnit* mUnit) 968 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 969 // The passed dex_cache is a hint, sanity check before asking the class linker that will take a 970 // lock. 971 if (dex_cache->GetDexFile() != mUnit->GetDexFile()) { 972 dex_cache.reset(mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())); 973 } 974 SirtRef<mirror::ClassLoader> 975 class_loader(soa.Self(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); 976 const DexFile::MethodId& referrer_method_id = 977 mUnit->GetDexFile()->GetMethodId(mUnit->GetDexMethodIndex()); 978 return mUnit->GetClassLinker()->ResolveType(*mUnit->GetDexFile(), referrer_method_id.class_idx_, 979 dex_cache, class_loader); 980} 981 982static mirror::ArtField* ComputeFieldReferencedFromCompilingMethod( 983 ScopedObjectAccess& soa, const DexCompilationUnit* mUnit, uint32_t field_idx, bool is_static) 984 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 985 SirtRef<mirror::DexCache> dex_cache(soa.Self(), mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())); 986 SirtRef<mirror::ClassLoader> class_loader(soa.Self(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); 987 return mUnit->GetClassLinker()->ResolveField(*mUnit->GetDexFile(), field_idx, dex_cache, 988 class_loader, is_static); 989} 990 991static mirror::ArtMethod* ComputeMethodReferencedFromCompilingMethod(ScopedObjectAccess& soa, 992 const DexCompilationUnit* mUnit, 993 uint32_t method_idx, 994 InvokeType type) 995 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 996 SirtRef<mirror::DexCache> dex_cache(soa.Self(), mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())); 997 SirtRef<mirror::ClassLoader> class_loader(soa.Self(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); 998 return mUnit->GetClassLinker()->ResolveMethod(*mUnit->GetDexFile(), method_idx, dex_cache, 999 class_loader, NULL, type); 1000} 1001 1002bool CompilerDriver::ComputeSpecialAccessorInfo(uint32_t field_idx, bool is_put, 1003 verifier::MethodVerifier* verifier, 1004 InlineIGetIPutData* result) { 1005 mirror::DexCache* dex_cache = verifier->GetDexCache(); 1006 uint32_t method_idx = verifier->GetMethodReference().dex_method_index; 1007 mirror::ArtMethod* method = dex_cache->GetResolvedMethod(method_idx); 1008 mirror::ArtField* field = dex_cache->GetResolvedField(field_idx); 1009 if (method == nullptr || field == nullptr) { 1010 return false; 1011 } 1012 mirror::Class* method_class = method->GetDeclaringClass(); 1013 mirror::Class* field_class = field->GetDeclaringClass(); 1014 if (!method_class->CanAccessResolvedField(field_class, field, dex_cache, field_idx) || 1015 (is_put && field->IsFinal() && method_class != field_class)) { 1016 return false; 1017 } 1018 DCHECK_GE(field->GetOffset().Int32Value(), 0); 1019 result->method_is_static = method->IsStatic(); 1020 result->field_idx = field_idx; 1021 result->field_offset = field->GetOffset().Int32Value(); 1022 result->is_volatile = field->IsVolatile(); 1023 return true; 1024} 1025 1026bool CompilerDriver::ComputeInstanceFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, 1027 bool is_put, int* field_offset, bool* is_volatile) { 1028 ScopedObjectAccess soa(Thread::Current()); 1029 // Conservative defaults. 1030 *field_offset = -1; 1031 *is_volatile = true; 1032 // Try to resolve field and ignore if an Incompatible Class Change Error (ie is static). 1033 mirror::ArtField* resolved_field = 1034 ComputeFieldReferencedFromCompilingMethod(soa, mUnit, field_idx, false); 1035 if (resolved_field != NULL && !resolved_field->IsStatic()) { 1036 SirtRef<mirror::DexCache> dex_cache(soa.Self(), 1037 resolved_field->GetDeclaringClass()->GetDexCache()); 1038 mirror::Class* referrer_class = 1039 ComputeCompilingMethodsClass(soa, dex_cache, mUnit); 1040 if (referrer_class != NULL) { 1041 mirror::Class* fields_class = resolved_field->GetDeclaringClass(); 1042 bool access_ok = referrer_class->CanAccessResolvedField(fields_class, resolved_field, 1043 dex_cache.get(), field_idx); 1044 bool is_write_to_final_from_wrong_class = is_put && resolved_field->IsFinal() && 1045 fields_class != referrer_class; 1046 if (access_ok && !is_write_to_final_from_wrong_class) { 1047 *field_offset = resolved_field->GetOffset().Int32Value(); 1048 *is_volatile = resolved_field->IsVolatile(); 1049 stats_->ResolvedInstanceField(); 1050 return true; // Fast path. 1051 } 1052 } 1053 } 1054 // Clean up any exception left by field/type resolution 1055 if (soa.Self()->IsExceptionPending()) { 1056 soa.Self()->ClearException(); 1057 } 1058 stats_->UnresolvedInstanceField(); 1059 return false; // Incomplete knowledge needs slow path. 1060} 1061 1062bool CompilerDriver::ComputeStaticFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, 1063 bool is_put, int* field_offset, int* storage_index, 1064 bool* is_referrers_class, bool* is_volatile, 1065 bool* is_initialized) { 1066 ScopedObjectAccess soa(Thread::Current()); 1067 // Conservative defaults. 1068 *field_offset = -1; 1069 *storage_index = -1; 1070 *is_referrers_class = false; 1071 *is_volatile = true; 1072 *is_initialized = false; 1073 // Try to resolve field and ignore if an Incompatible Class Change Error (ie isn't static). 1074 mirror::ArtField* resolved_field = 1075 ComputeFieldReferencedFromCompilingMethod(soa, mUnit, field_idx, true); 1076 if (resolved_field != NULL && resolved_field->IsStatic()) { 1077 SirtRef<mirror::DexCache> dex_cache(soa.Self(), resolved_field->GetDeclaringClass()->GetDexCache()); 1078 mirror::Class* referrer_class = 1079 ComputeCompilingMethodsClass(soa, dex_cache, mUnit); 1080 if (referrer_class != NULL) { 1081 mirror::Class* fields_class = resolved_field->GetDeclaringClass(); 1082 if (fields_class == referrer_class) { 1083 *is_referrers_class = true; // implies no worrying about class initialization 1084 *is_initialized = true; 1085 *field_offset = resolved_field->GetOffset().Int32Value(); 1086 *is_volatile = resolved_field->IsVolatile(); 1087 stats_->ResolvedLocalStaticField(); 1088 return true; // fast path 1089 } else { 1090 bool access_ok = referrer_class->CanAccessResolvedField(fields_class, resolved_field, 1091 dex_cache.get(), field_idx); 1092 bool is_write_to_final_from_wrong_class = is_put && resolved_field->IsFinal(); 1093 if (access_ok && !is_write_to_final_from_wrong_class) { 1094 // We have the resolved field, we must make it into a index for the referrer 1095 // in its static storage (which may fail if it doesn't have a slot for it) 1096 // TODO: for images we can elide the static storage base null check 1097 // if we know there's a non-null entry in the image 1098 mirror::DexCache* dex_cache = mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile()); 1099 if (fields_class->GetDexCache() == dex_cache) { 1100 // common case where the dex cache of both the referrer and the field are the same, 1101 // no need to search the dex file 1102 *storage_index = fields_class->GetDexTypeIndex(); 1103 *field_offset = resolved_field->GetOffset().Int32Value(); 1104 *is_volatile = resolved_field->IsVolatile(); 1105 *is_initialized = fields_class->IsInitialized() && 1106 CanAssumeTypeIsPresentInDexCache(*mUnit->GetDexFile(), *storage_index); 1107 stats_->ResolvedStaticField(); 1108 return true; 1109 } 1110 // Search dex file for localized ssb index, may fail if field's class is a parent 1111 // of the class mentioned in the dex file and there is no dex cache entry. 1112 const DexFile::StringId* string_id = 1113 mUnit->GetDexFile()->FindStringId(FieldHelper(resolved_field).GetDeclaringClassDescriptor()); 1114 if (string_id != NULL) { 1115 const DexFile::TypeId* type_id = 1116 mUnit->GetDexFile()->FindTypeId(mUnit->GetDexFile()->GetIndexForStringId(*string_id)); 1117 if (type_id != NULL) { 1118 // medium path, needs check of static storage base being initialized 1119 *storage_index = mUnit->GetDexFile()->GetIndexForTypeId(*type_id); 1120 *field_offset = resolved_field->GetOffset().Int32Value(); 1121 *is_volatile = resolved_field->IsVolatile(); 1122 *is_initialized = fields_class->IsInitialized() && 1123 CanAssumeTypeIsPresentInDexCache(*mUnit->GetDexFile(), *storage_index); 1124 stats_->ResolvedStaticField(); 1125 return true; 1126 } 1127 } 1128 } 1129 } 1130 } 1131 } 1132 // Clean up any exception left by field/type resolution 1133 if (soa.Self()->IsExceptionPending()) { 1134 soa.Self()->ClearException(); 1135 } 1136 stats_->UnresolvedStaticField(); 1137 return false; // Incomplete knowledge needs slow path. 1138} 1139 1140void CompilerDriver::GetCodeAndMethodForDirectCall(InvokeType* type, InvokeType sharp_type, 1141 bool no_guarantee_of_dex_cache_entry, 1142 mirror::Class* referrer_class, 1143 mirror::ArtMethod* method, 1144 bool update_stats, 1145 MethodReference* target_method, 1146 uintptr_t* direct_code, 1147 uintptr_t* direct_method) { 1148 // For direct and static methods compute possible direct_code and direct_method values, ie 1149 // an address for the Method* being invoked and an address of the code for that Method*. 1150 // For interface calls compute a value for direct_method that is the interface method being 1151 // invoked, so this can be passed to the out-of-line runtime support code. 1152 *direct_code = 0; 1153 *direct_method = 0; 1154 bool use_dex_cache = false; 1155 const bool compiling_boot = Runtime::Current()->GetHeap()->IsCompilingBoot(); 1156 if (compiler_backend_ == kPortable) { 1157 if (sharp_type != kStatic && sharp_type != kDirect) { 1158 return; 1159 } 1160 use_dex_cache = true; 1161 } else { 1162 if (sharp_type != kStatic && sharp_type != kDirect) { 1163 return; 1164 } 1165 // TODO: support patching on all architectures. 1166 use_dex_cache = compiling_boot && !support_boot_image_fixup_; 1167 } 1168 bool method_code_in_boot = (method->GetDeclaringClass()->GetClassLoader() == nullptr); 1169 if (!use_dex_cache) { 1170 if (!method_code_in_boot) { 1171 use_dex_cache = true; 1172 } else { 1173 bool has_clinit_trampoline = 1174 method->IsStatic() && !method->GetDeclaringClass()->IsInitialized(); 1175 if (has_clinit_trampoline && (method->GetDeclaringClass() != referrer_class)) { 1176 // Ensure we run the clinit trampoline unless we are invoking a static method in the same 1177 // class. 1178 use_dex_cache = true; 1179 } 1180 } 1181 } 1182 if (update_stats && method_code_in_boot) { 1183 stats_->DirectCallsToBoot(*type); 1184 stats_->DirectMethodsToBoot(*type); 1185 } 1186 if (!use_dex_cache && compiling_boot) { 1187 MethodHelper mh(method); 1188 if (!IsImageClass(mh.GetDeclaringClassDescriptor())) { 1189 // We can only branch directly to Methods that are resolved in the DexCache. 1190 // Otherwise we won't invoke the resolution trampoline. 1191 use_dex_cache = true; 1192 } 1193 } 1194 // The method is defined not within this dex file. We need a dex cache slot within the current 1195 // dex file or direct pointers. 1196 bool must_use_direct_pointers = false; 1197 if (target_method->dex_file == method->GetDeclaringClass()->GetDexCache()->GetDexFile()) { 1198 target_method->dex_method_index = method->GetDexMethodIndex(); 1199 } else { 1200 // TODO: support patching from one dex file to another in the boot image. 1201 use_dex_cache = use_dex_cache || compiling_boot; 1202 if (no_guarantee_of_dex_cache_entry) { 1203 // See if the method is also declared in this dex cache. 1204 uint32_t dex_method_idx = MethodHelper(method).FindDexMethodIndexInOtherDexFile( 1205 *target_method->dex_file, target_method->dex_method_index); 1206 if (dex_method_idx != DexFile::kDexNoIndex) { 1207 target_method->dex_method_index = dex_method_idx; 1208 } else { 1209 must_use_direct_pointers = true; 1210 } 1211 } 1212 } 1213 if (use_dex_cache) { 1214 if (must_use_direct_pointers) { 1215 // Fail. Test above showed the only safe dispatch was via the dex cache, however, the direct 1216 // pointers are required as the dex cache lacks an appropriate entry. 1217 VLOG(compiler) << "Dex cache devirtualization failed for: " << PrettyMethod(method); 1218 } else { 1219 *type = sharp_type; 1220 } 1221 } else { 1222 if (compiling_boot) { 1223 *type = sharp_type; 1224 *direct_method = -1; 1225 *direct_code = -1; 1226 } else { 1227 bool method_in_image = 1228 Runtime::Current()->GetHeap()->FindSpaceFromObject(method, false)->IsImageSpace(); 1229 if (method_in_image) { 1230 CHECK(!method->IsAbstract()); 1231 *type = sharp_type; 1232 *direct_method = reinterpret_cast<uintptr_t>(method); 1233 if (compiler_backend_ == kQuick) { 1234 *direct_code = reinterpret_cast<uintptr_t>(method->GetEntryPointFromQuickCompiledCode()); 1235 } else { 1236 CHECK_EQ(compiler_backend_, kPortable); 1237 *direct_code = reinterpret_cast<uintptr_t>(method->GetEntryPointFromPortableCompiledCode()); 1238 } 1239 target_method->dex_file = method->GetDeclaringClass()->GetDexCache()->GetDexFile(); 1240 target_method->dex_method_index = method->GetDexMethodIndex(); 1241 } else if (!must_use_direct_pointers) { 1242 // Set the code and rely on the dex cache for the method. 1243 *type = sharp_type; 1244 if (compiler_backend_ == kQuick) { 1245 *direct_code = reinterpret_cast<uintptr_t>(method->GetEntryPointFromQuickCompiledCode()); 1246 } else { 1247 CHECK_EQ(compiler_backend_, kPortable); 1248 *direct_code = reinterpret_cast<uintptr_t>(method->GetEntryPointFromPortableCompiledCode()); 1249 } 1250 } else { 1251 // Direct pointers were required but none were available. 1252 VLOG(compiler) << "Dex cache devirtualization failed for: " << PrettyMethod(method); 1253 } 1254 } 1255 } 1256} 1257 1258bool CompilerDriver::ComputeInvokeInfo(const DexCompilationUnit* mUnit, const uint32_t dex_pc, 1259 bool update_stats, bool enable_devirtualization, 1260 InvokeType* invoke_type, MethodReference* target_method, 1261 int* vtable_idx, uintptr_t* direct_code, 1262 uintptr_t* direct_method) { 1263 ScopedObjectAccess soa(Thread::Current()); 1264 *vtable_idx = -1; 1265 *direct_code = 0; 1266 *direct_method = 0; 1267 mirror::ArtMethod* resolved_method = 1268 ComputeMethodReferencedFromCompilingMethod(soa, mUnit, target_method->dex_method_index, 1269 *invoke_type); 1270 if (resolved_method != NULL) { 1271 if (*invoke_type == kVirtual || *invoke_type == kSuper) { 1272 *vtable_idx = resolved_method->GetMethodIndex(); 1273 } else if (*invoke_type == kInterface) { 1274 *vtable_idx = resolved_method->GetDexMethodIndex(); 1275 } 1276 // Don't try to fast-path if we don't understand the caller's class or this appears to be an 1277 // Incompatible Class Change Error. 1278 SirtRef<mirror::DexCache> dex_cache(soa.Self(), resolved_method->GetDeclaringClass()->GetDexCache()); 1279 mirror::Class* referrer_class = 1280 ComputeCompilingMethodsClass(soa, dex_cache, mUnit); 1281 bool icce = resolved_method->CheckIncompatibleClassChange(*invoke_type); 1282 if (referrer_class != NULL && !icce) { 1283 mirror::Class* methods_class = resolved_method->GetDeclaringClass(); 1284 if (referrer_class->CanAccessResolvedMethod(methods_class, resolved_method, dex_cache.get(), 1285 target_method->dex_method_index)) { 1286 const bool enableFinalBasedSharpening = enable_devirtualization; 1287 // Sharpen a virtual call into a direct call when the target is known not to have been 1288 // overridden (ie is final). 1289 bool can_sharpen_virtual_based_on_type = 1290 (*invoke_type == kVirtual) && (resolved_method->IsFinal() || methods_class->IsFinal()); 1291 // For invoke-super, ensure the vtable index will be correct to dispatch in the vtable of 1292 // the super class. 1293 bool can_sharpen_super_based_on_type = (*invoke_type == kSuper) && 1294 (referrer_class != methods_class) && referrer_class->IsSubClass(methods_class) && 1295 resolved_method->GetMethodIndex() < methods_class->GetVTable()->GetLength() && 1296 (methods_class->GetVTable()->Get(resolved_method->GetMethodIndex()) == resolved_method); 1297 1298 if (enableFinalBasedSharpening && (can_sharpen_virtual_based_on_type || 1299 can_sharpen_super_based_on_type)) { 1300 // Sharpen a virtual call into a direct call. The method_idx is into the DexCache 1301 // associated with target_method->dex_file. 1302 CHECK(target_method->dex_file == mUnit->GetDexFile()); 1303 DCHECK(dex_cache.get() == mUnit->GetClassLinker()->FindDexCache(*mUnit->GetDexFile())); 1304 CHECK(dex_cache->GetResolvedMethod(target_method->dex_method_index) == 1305 resolved_method) << PrettyMethod(resolved_method); 1306 InvokeType orig_invoke_type = *invoke_type; 1307 GetCodeAndMethodForDirectCall(invoke_type, kDirect, false, referrer_class, resolved_method, 1308 update_stats, target_method, direct_code, direct_method); 1309 if (update_stats && (*invoke_type == kDirect)) { 1310 stats_->ResolvedMethod(orig_invoke_type); 1311 stats_->VirtualMadeDirect(orig_invoke_type); 1312 } 1313 DCHECK_NE(*invoke_type, kSuper) << PrettyMethod(resolved_method); 1314 return true; 1315 } 1316 const bool enableVerifierBasedSharpening = enable_devirtualization; 1317 if (enableVerifierBasedSharpening && (*invoke_type == kVirtual || 1318 *invoke_type == kInterface)) { 1319 // Did the verifier record a more precise invoke target based on its type information? 1320 DCHECK(mUnit->GetVerifiedMethod() != nullptr); 1321 const MethodReference* devirt_map_target = 1322 mUnit->GetVerifiedMethod()->GetDevirtTarget(dex_pc); 1323 if (devirt_map_target != NULL) { 1324 SirtRef<mirror::DexCache> target_dex_cache(soa.Self(), mUnit->GetClassLinker()->FindDexCache(*devirt_map_target->dex_file)); 1325 SirtRef<mirror::ClassLoader> class_loader(soa.Self(), soa.Decode<mirror::ClassLoader*>(mUnit->GetClassLoader())); 1326 mirror::ArtMethod* called_method = 1327 mUnit->GetClassLinker()->ResolveMethod(*devirt_map_target->dex_file, 1328 devirt_map_target->dex_method_index, 1329 target_dex_cache, class_loader, NULL, 1330 kVirtual); 1331 CHECK(called_method != NULL); 1332 CHECK(!called_method->IsAbstract()); 1333 InvokeType orig_invoke_type = *invoke_type; 1334 GetCodeAndMethodForDirectCall(invoke_type, kDirect, true, referrer_class, called_method, 1335 update_stats, target_method, direct_code, direct_method); 1336 if (update_stats && (*invoke_type == kDirect)) { 1337 stats_->ResolvedMethod(orig_invoke_type); 1338 stats_->VirtualMadeDirect(orig_invoke_type); 1339 stats_->PreciseTypeDevirtualization(); 1340 } 1341 DCHECK_NE(*invoke_type, kSuper); 1342 return true; 1343 } 1344 } 1345 if (*invoke_type == kSuper) { 1346 // Unsharpened super calls are suspicious so go slow-path. 1347 } else { 1348 // Sharpening failed so generate a regular resolved method dispatch. 1349 if (update_stats) { 1350 stats_->ResolvedMethod(*invoke_type); 1351 } 1352 GetCodeAndMethodForDirectCall(invoke_type, *invoke_type, false, referrer_class, resolved_method, 1353 update_stats, target_method, direct_code, direct_method); 1354 return true; 1355 } 1356 } 1357 } 1358 } 1359 // Clean up any exception left by method/invoke_type resolution 1360 if (soa.Self()->IsExceptionPending()) { 1361 soa.Self()->ClearException(); 1362 } 1363 if (update_stats) { 1364 stats_->UnresolvedMethod(*invoke_type); 1365 } 1366 return false; // Incomplete knowledge needs slow path. 1367} 1368 1369const VerifiedMethod* CompilerDriver::GetVerifiedMethod(const DexFile* dex_file, 1370 uint32_t method_idx) const { 1371 MethodReference ref(dex_file, method_idx); 1372 return verification_results_->GetVerifiedMethod(ref); 1373} 1374 1375bool CompilerDriver::IsSafeCast(const DexCompilationUnit* mUnit, uint32_t dex_pc) { 1376 DCHECK(mUnit->GetVerifiedMethod() != nullptr); 1377 bool result = mUnit->GetVerifiedMethod()->IsSafeCast(dex_pc); 1378 if (result) { 1379 stats_->SafeCast(); 1380 } else { 1381 stats_->NotASafeCast(); 1382 } 1383 return result; 1384} 1385 1386 1387void CompilerDriver::AddCodePatch(const DexFile* dex_file, 1388 uint16_t referrer_class_def_idx, 1389 uint32_t referrer_method_idx, 1390 InvokeType referrer_invoke_type, 1391 uint32_t target_method_idx, 1392 InvokeType target_invoke_type, 1393 size_t literal_offset) { 1394 MutexLock mu(Thread::Current(), compiled_methods_lock_); 1395 code_to_patch_.push_back(new CallPatchInformation(dex_file, 1396 referrer_class_def_idx, 1397 referrer_method_idx, 1398 referrer_invoke_type, 1399 target_method_idx, 1400 target_invoke_type, 1401 literal_offset)); 1402} 1403void CompilerDriver::AddRelativeCodePatch(const DexFile* dex_file, 1404 uint16_t referrer_class_def_idx, 1405 uint32_t referrer_method_idx, 1406 InvokeType referrer_invoke_type, 1407 uint32_t target_method_idx, 1408 InvokeType target_invoke_type, 1409 size_t literal_offset, 1410 int32_t pc_relative_offset) { 1411 MutexLock mu(Thread::Current(), compiled_methods_lock_); 1412 code_to_patch_.push_back(new RelativeCallPatchInformation(dex_file, 1413 referrer_class_def_idx, 1414 referrer_method_idx, 1415 referrer_invoke_type, 1416 target_method_idx, 1417 target_invoke_type, 1418 literal_offset, 1419 pc_relative_offset)); 1420} 1421void CompilerDriver::AddMethodPatch(const DexFile* dex_file, 1422 uint16_t referrer_class_def_idx, 1423 uint32_t referrer_method_idx, 1424 InvokeType referrer_invoke_type, 1425 uint32_t target_method_idx, 1426 InvokeType target_invoke_type, 1427 size_t literal_offset) { 1428 MutexLock mu(Thread::Current(), compiled_methods_lock_); 1429 methods_to_patch_.push_back(new CallPatchInformation(dex_file, 1430 referrer_class_def_idx, 1431 referrer_method_idx, 1432 referrer_invoke_type, 1433 target_method_idx, 1434 target_invoke_type, 1435 literal_offset)); 1436} 1437void CompilerDriver::AddClassPatch(const DexFile* dex_file, 1438 uint16_t referrer_class_def_idx, 1439 uint32_t referrer_method_idx, 1440 uint32_t target_type_idx, 1441 size_t literal_offset) { 1442 MutexLock mu(Thread::Current(), compiled_methods_lock_); 1443 classes_to_patch_.push_back(new TypePatchInformation(dex_file, 1444 referrer_class_def_idx, 1445 referrer_method_idx, 1446 target_type_idx, 1447 literal_offset)); 1448} 1449 1450class ParallelCompilationManager { 1451 public: 1452 typedef void Callback(const ParallelCompilationManager* manager, size_t index); 1453 1454 ParallelCompilationManager(ClassLinker* class_linker, 1455 jobject class_loader, 1456 CompilerDriver* compiler, 1457 const DexFile* dex_file, 1458 ThreadPool& thread_pool) 1459 : index_(0), 1460 class_linker_(class_linker), 1461 class_loader_(class_loader), 1462 compiler_(compiler), 1463 dex_file_(dex_file), 1464 thread_pool_(&thread_pool) {} 1465 1466 ClassLinker* GetClassLinker() const { 1467 CHECK(class_linker_ != NULL); 1468 return class_linker_; 1469 } 1470 1471 jobject GetClassLoader() const { 1472 return class_loader_; 1473 } 1474 1475 CompilerDriver* GetCompiler() const { 1476 CHECK(compiler_ != NULL); 1477 return compiler_; 1478 } 1479 1480 const DexFile* GetDexFile() const { 1481 CHECK(dex_file_ != NULL); 1482 return dex_file_; 1483 } 1484 1485 void ForAll(size_t begin, size_t end, Callback callback, size_t work_units) { 1486 Thread* self = Thread::Current(); 1487 self->AssertNoPendingException(); 1488 CHECK_GT(work_units, 0U); 1489 1490 index_ = begin; 1491 for (size_t i = 0; i < work_units; ++i) { 1492 thread_pool_->AddTask(self, new ForAllClosure(this, end, callback)); 1493 } 1494 thread_pool_->StartWorkers(self); 1495 1496 // Ensure we're suspended while we're blocked waiting for the other threads to finish (worker 1497 // thread destructor's called below perform join). 1498 CHECK_NE(self->GetState(), kRunnable); 1499 1500 // Wait for all the worker threads to finish. 1501 thread_pool_->Wait(self, true, false); 1502 } 1503 1504 size_t NextIndex() { 1505 return index_.FetchAndAdd(1); 1506 } 1507 1508 private: 1509 class ForAllClosure : public Task { 1510 public: 1511 ForAllClosure(ParallelCompilationManager* manager, size_t end, Callback* callback) 1512 : manager_(manager), 1513 end_(end), 1514 callback_(callback) {} 1515 1516 virtual void Run(Thread* self) { 1517 while (true) { 1518 const size_t index = manager_->NextIndex(); 1519 if (UNLIKELY(index >= end_)) { 1520 break; 1521 } 1522 callback_(manager_, index); 1523 self->AssertNoPendingException(); 1524 } 1525 } 1526 1527 virtual void Finalize() { 1528 delete this; 1529 } 1530 1531 private: 1532 ParallelCompilationManager* const manager_; 1533 const size_t end_; 1534 Callback* const callback_; 1535 }; 1536 1537 AtomicInteger index_; 1538 ClassLinker* const class_linker_; 1539 const jobject class_loader_; 1540 CompilerDriver* const compiler_; 1541 const DexFile* const dex_file_; 1542 ThreadPool* const thread_pool_; 1543 1544 DISALLOW_COPY_AND_ASSIGN(ParallelCompilationManager); 1545}; 1546 1547// Return true if the class should be skipped during compilation. 1548// 1549// The first case where we skip is for redundant class definitions in 1550// the boot classpath. We skip all but the first definition in that case. 1551// 1552// The second case where we skip is when an app bundles classes found 1553// in the boot classpath. Since at runtime we will select the class from 1554// the boot classpath, we ignore the one from the app. 1555static bool SkipClass(ClassLinker* class_linker, jobject class_loader, const DexFile& dex_file, 1556 const DexFile::ClassDef& class_def) { 1557 const char* descriptor = dex_file.GetClassDescriptor(class_def); 1558 if (class_loader == NULL) { 1559 DexFile::ClassPathEntry pair = DexFile::FindInClassPath(descriptor, class_linker->GetBootClassPath()); 1560 CHECK(pair.second != NULL); 1561 if (pair.first != &dex_file) { 1562 LOG(WARNING) << "Skipping class " << descriptor << " from " << dex_file.GetLocation() 1563 << " previously found in " << pair.first->GetLocation(); 1564 return true; 1565 } 1566 return false; 1567 } 1568 return class_linker->IsInBootClassPath(descriptor); 1569} 1570 1571// A fast version of SkipClass above if the class pointer is available 1572// that avoids the expensive FindInClassPath search. 1573static bool SkipClass(jobject class_loader, const DexFile& dex_file, mirror::Class* klass) 1574 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 1575 DCHECK(klass != NULL); 1576 const DexFile& original_dex_file = *klass->GetDexCache()->GetDexFile(); 1577 if (&dex_file != &original_dex_file) { 1578 if (class_loader == NULL) { 1579 LOG(WARNING) << "Skipping class " << PrettyDescriptor(klass) << " from " 1580 << dex_file.GetLocation() << " previously found in " 1581 << original_dex_file.GetLocation(); 1582 } 1583 return true; 1584 } 1585 return false; 1586} 1587 1588static void ResolveClassFieldsAndMethods(const ParallelCompilationManager* manager, 1589 size_t class_def_index) 1590 LOCKS_EXCLUDED(Locks::mutator_lock_) { 1591 ATRACE_CALL(); 1592 Thread* self = Thread::Current(); 1593 jobject jclass_loader = manager->GetClassLoader(); 1594 const DexFile& dex_file = *manager->GetDexFile(); 1595 ClassLinker* class_linker = manager->GetClassLinker(); 1596 1597 // If an instance field is final then we need to have a barrier on the return, static final 1598 // fields are assigned within the lock held for class initialization. Conservatively assume 1599 // constructor barriers are always required. 1600 bool requires_constructor_barrier = true; 1601 1602 // Method and Field are the worst. We can't resolve without either 1603 // context from the code use (to disambiguate virtual vs direct 1604 // method and instance vs static field) or from class 1605 // definitions. While the compiler will resolve what it can as it 1606 // needs it, here we try to resolve fields and methods used in class 1607 // definitions, since many of them many never be referenced by 1608 // generated code. 1609 const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); 1610 if (!SkipClass(class_linker, jclass_loader, dex_file, class_def)) { 1611 ScopedObjectAccess soa(self); 1612 SirtRef<mirror::ClassLoader> class_loader(soa.Self(), soa.Decode<mirror::ClassLoader*>(jclass_loader)); 1613 SirtRef<mirror::DexCache> dex_cache(soa.Self(), class_linker->FindDexCache(dex_file)); 1614 // Resolve the class. 1615 mirror::Class* klass = class_linker->ResolveType(dex_file, class_def.class_idx_, dex_cache, 1616 class_loader); 1617 bool resolve_fields_and_methods; 1618 if (klass == NULL) { 1619 // Class couldn't be resolved, for example, super-class is in a different dex file. Don't 1620 // attempt to resolve methods and fields when there is no declaring class. 1621 CHECK(soa.Self()->IsExceptionPending()); 1622 soa.Self()->ClearException(); 1623 resolve_fields_and_methods = false; 1624 } else { 1625 resolve_fields_and_methods = manager->GetCompiler()->IsImage(); 1626 } 1627 // Note the class_data pointer advances through the headers, 1628 // static fields, instance fields, direct methods, and virtual 1629 // methods. 1630 const byte* class_data = dex_file.GetClassData(class_def); 1631 if (class_data == NULL) { 1632 // Empty class such as a marker interface. 1633 requires_constructor_barrier = false; 1634 } else { 1635 ClassDataItemIterator it(dex_file, class_data); 1636 while (it.HasNextStaticField()) { 1637 if (resolve_fields_and_methods) { 1638 mirror::ArtField* field = class_linker->ResolveField(dex_file, it.GetMemberIndex(), 1639 dex_cache, class_loader, true); 1640 if (field == NULL) { 1641 CHECK(soa.Self()->IsExceptionPending()); 1642 soa.Self()->ClearException(); 1643 } 1644 } 1645 it.Next(); 1646 } 1647 // We require a constructor barrier if there are final instance fields. 1648 requires_constructor_barrier = false; 1649 while (it.HasNextInstanceField()) { 1650 if ((it.GetMemberAccessFlags() & kAccFinal) != 0) { 1651 requires_constructor_barrier = true; 1652 } 1653 if (resolve_fields_and_methods) { 1654 mirror::ArtField* field = class_linker->ResolveField(dex_file, it.GetMemberIndex(), 1655 dex_cache, class_loader, false); 1656 if (field == NULL) { 1657 CHECK(soa.Self()->IsExceptionPending()); 1658 soa.Self()->ClearException(); 1659 } 1660 } 1661 it.Next(); 1662 } 1663 if (resolve_fields_and_methods) { 1664 while (it.HasNextDirectMethod()) { 1665 mirror::ArtMethod* method = class_linker->ResolveMethod(dex_file, it.GetMemberIndex(), 1666 dex_cache, class_loader, NULL, 1667 it.GetMethodInvokeType(class_def)); 1668 if (method == NULL) { 1669 CHECK(soa.Self()->IsExceptionPending()); 1670 soa.Self()->ClearException(); 1671 } 1672 it.Next(); 1673 } 1674 while (it.HasNextVirtualMethod()) { 1675 mirror::ArtMethod* method = class_linker->ResolveMethod(dex_file, it.GetMemberIndex(), 1676 dex_cache, class_loader, NULL, 1677 it.GetMethodInvokeType(class_def)); 1678 if (method == NULL) { 1679 CHECK(soa.Self()->IsExceptionPending()); 1680 soa.Self()->ClearException(); 1681 } 1682 it.Next(); 1683 } 1684 DCHECK(!it.HasNext()); 1685 } 1686 } 1687 } 1688 if (requires_constructor_barrier) { 1689 manager->GetCompiler()->AddRequiresConstructorBarrier(self, &dex_file, class_def_index); 1690 } 1691} 1692 1693static void ResolveType(const ParallelCompilationManager* manager, size_t type_idx) 1694 LOCKS_EXCLUDED(Locks::mutator_lock_) { 1695 // Class derived values are more complicated, they require the linker and loader. 1696 ScopedObjectAccess soa(Thread::Current()); 1697 ClassLinker* class_linker = manager->GetClassLinker(); 1698 const DexFile& dex_file = *manager->GetDexFile(); 1699 SirtRef<mirror::DexCache> dex_cache(soa.Self(), class_linker->FindDexCache(dex_file)); 1700 SirtRef<mirror::ClassLoader> class_loader( 1701 soa.Self(), soa.Decode<mirror::ClassLoader*>(manager->GetClassLoader())); 1702 mirror::Class* klass = class_linker->ResolveType(dex_file, type_idx, dex_cache, class_loader); 1703 1704 if (klass == NULL) { 1705 CHECK(soa.Self()->IsExceptionPending()); 1706 mirror::Throwable* exception = soa.Self()->GetException(NULL); 1707 VLOG(compiler) << "Exception during type resolution: " << exception->Dump(); 1708 if (strcmp("Ljava/lang/OutOfMemoryError;", 1709 ClassHelper(exception->GetClass()).GetDescriptor()) == 0) { 1710 // There's little point continuing compilation if the heap is exhausted. 1711 LOG(FATAL) << "Out of memory during type resolution for compilation"; 1712 } 1713 soa.Self()->ClearException(); 1714 } 1715} 1716 1717void CompilerDriver::ResolveDexFile(jobject class_loader, const DexFile& dex_file, 1718 ThreadPool& thread_pool, TimingLogger& timings) { 1719 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1720 1721 // TODO: we could resolve strings here, although the string table is largely filled with class 1722 // and method names. 1723 1724 ParallelCompilationManager context(class_linker, class_loader, this, &dex_file, thread_pool); 1725 if (IsImage()) { 1726 // For images we resolve all types, such as array, whereas for applications just those with 1727 // classdefs are resolved by ResolveClassFieldsAndMethods. 1728 timings.NewSplit("Resolve Types"); 1729 context.ForAll(0, dex_file.NumTypeIds(), ResolveType, thread_count_); 1730 } 1731 1732 timings.NewSplit("Resolve MethodsAndFields"); 1733 context.ForAll(0, dex_file.NumClassDefs(), ResolveClassFieldsAndMethods, thread_count_); 1734} 1735 1736void CompilerDriver::Verify(jobject class_loader, const std::vector<const DexFile*>& dex_files, 1737 ThreadPool& thread_pool, TimingLogger& timings) { 1738 for (size_t i = 0; i != dex_files.size(); ++i) { 1739 const DexFile* dex_file = dex_files[i]; 1740 CHECK(dex_file != NULL); 1741 VerifyDexFile(class_loader, *dex_file, thread_pool, timings); 1742 } 1743} 1744 1745static void VerifyClass(const ParallelCompilationManager* manager, size_t class_def_index) 1746 LOCKS_EXCLUDED(Locks::mutator_lock_) { 1747 ATRACE_CALL(); 1748 ScopedObjectAccess soa(Thread::Current()); 1749 const DexFile& dex_file = *manager->GetDexFile(); 1750 const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); 1751 const char* descriptor = dex_file.GetClassDescriptor(class_def); 1752 ClassLinker* class_linker = manager->GetClassLinker(); 1753 jobject jclass_loader = manager->GetClassLoader(); 1754 SirtRef<mirror::ClassLoader> class_loader( 1755 soa.Self(), soa.Decode<mirror::ClassLoader*>(jclass_loader)); 1756 SirtRef<mirror::Class> klass(soa.Self(), class_linker->FindClass(descriptor, class_loader)); 1757 if (klass.get() == nullptr) { 1758 CHECK(soa.Self()->IsExceptionPending()); 1759 soa.Self()->ClearException(); 1760 1761 /* 1762 * At compile time, we can still structurally verify the class even if FindClass fails. 1763 * This is to ensure the class is structurally sound for compilation. An unsound class 1764 * will be rejected by the verifier and later skipped during compilation in the compiler. 1765 */ 1766 SirtRef<mirror::DexCache> dex_cache(soa.Self(), class_linker->FindDexCache(dex_file)); 1767 std::string error_msg; 1768 if (verifier::MethodVerifier::VerifyClass(&dex_file, dex_cache, class_loader, &class_def, true, 1769 &error_msg) == 1770 verifier::MethodVerifier::kHardFailure) { 1771 LOG(ERROR) << "Verification failed on class " << PrettyDescriptor(descriptor) 1772 << " because: " << error_msg; 1773 } 1774 } else if (!SkipClass(jclass_loader, dex_file, klass.get())) { 1775 CHECK(klass->IsResolved()) << PrettyClass(klass.get()); 1776 class_linker->VerifyClass(klass); 1777 1778 if (klass->IsErroneous()) { 1779 // ClassLinker::VerifyClass throws, which isn't useful in the compiler. 1780 CHECK(soa.Self()->IsExceptionPending()); 1781 soa.Self()->ClearException(); 1782 } 1783 1784 CHECK(klass->IsCompileTimeVerified() || klass->IsErroneous()) 1785 << PrettyDescriptor(klass.get()) << ": state=" << klass->GetStatus(); 1786 } 1787 soa.Self()->AssertNoPendingException(); 1788} 1789 1790void CompilerDriver::VerifyDexFile(jobject class_loader, const DexFile& dex_file, 1791 ThreadPool& thread_pool, TimingLogger& timings) { 1792 timings.NewSplit("Verify Dex File"); 1793 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 1794 ParallelCompilationManager context(class_linker, class_loader, this, &dex_file, thread_pool); 1795 context.ForAll(0, dex_file.NumClassDefs(), VerifyClass, thread_count_); 1796} 1797 1798static const char* class_initializer_black_list[] = { 1799 "Landroid/app/ActivityThread;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1800 "Landroid/bluetooth/BluetoothAudioGateway;", // Calls android.bluetooth.BluetoothAudioGateway.classInitNative(). 1801 "Landroid/bluetooth/HeadsetBase;", // Calls android.bluetooth.HeadsetBase.classInitNative(). 1802 "Landroid/content/res/CompatibilityInfo;", // Requires android.util.DisplayMetrics -..-> android.os.SystemProperties.native_get_int. 1803 "Landroid/content/res/CompatibilityInfo$1;", // Requires android.util.DisplayMetrics -..-> android.os.SystemProperties.native_get_int. 1804 "Landroid/content/UriMatcher;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1805 "Landroid/database/CursorWindow;", // Requires android.util.DisplayMetrics -..-> android.os.SystemProperties.native_get_int. 1806 "Landroid/database/sqlite/SQLiteConnection;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1807 "Landroid/database/sqlite/SQLiteConnection$Operation;", // Requires SimpleDateFormat -> java.util.Locale. 1808 "Landroid/database/sqlite/SQLiteDatabaseConfiguration;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1809 "Landroid/database/sqlite/SQLiteDebug;", // Calls android.util.Log.isLoggable. 1810 "Landroid/database/sqlite/SQLiteOpenHelper;", // Calls Class.getSimpleName -> Class.isAnonymousClass -> Class.getDex. 1811 "Landroid/database/sqlite/SQLiteQueryBuilder;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1812 "Landroid/drm/DrmManagerClient;", // Calls System.loadLibrary. 1813 "Landroid/graphics/drawable/AnimatedRotateDrawable;", // Sub-class of Drawable. 1814 "Landroid/graphics/drawable/AnimationDrawable;", // Sub-class of Drawable. 1815 "Landroid/graphics/drawable/BitmapDrawable;", // Sub-class of Drawable. 1816 "Landroid/graphics/drawable/ClipDrawable;", // Sub-class of Drawable. 1817 "Landroid/graphics/drawable/ColorDrawable;", // Sub-class of Drawable. 1818 "Landroid/graphics/drawable/Drawable;", // Requires android.graphics.Rect. 1819 "Landroid/graphics/drawable/DrawableContainer;", // Sub-class of Drawable. 1820 "Landroid/graphics/drawable/GradientDrawable;", // Sub-class of Drawable. 1821 "Landroid/graphics/drawable/LayerDrawable;", // Sub-class of Drawable. 1822 "Landroid/graphics/drawable/NinePatchDrawable;", // Sub-class of Drawable. 1823 "Landroid/graphics/drawable/RotateDrawable;", // Sub-class of Drawable. 1824 "Landroid/graphics/drawable/ScaleDrawable;", // Sub-class of Drawable. 1825 "Landroid/graphics/drawable/ShapeDrawable;", // Sub-class of Drawable. 1826 "Landroid/graphics/drawable/StateListDrawable;", // Sub-class of Drawable. 1827 "Landroid/graphics/drawable/TransitionDrawable;", // Sub-class of Drawable. 1828 "Landroid/graphics/Matrix;", // Calls android.graphics.Matrix.native_create. 1829 "Landroid/graphics/Matrix$1;", // Requires Matrix. 1830 "Landroid/graphics/PixelFormat;", // Calls android.graphics.PixelFormat.nativeClassInit(). 1831 "Landroid/graphics/Rect;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1832 "Landroid/graphics/SurfaceTexture;", // Calls android.graphics.SurfaceTexture.nativeClassInit(). 1833 "Landroid/graphics/Typeface;", // Calls android.graphics.Typeface.nativeCreate. 1834 "Landroid/inputmethodservice/ExtractEditText;", // Requires android.widget.TextView. 1835 "Landroid/media/AmrInputStream;", // Calls OsConstants.initConstants. 1836 "Landroid/media/CamcorderProfile;", // Calls OsConstants.initConstants. 1837 "Landroid/media/CameraProfile;", // Calls System.loadLibrary. 1838 "Landroid/media/DecoderCapabilities;", // Calls System.loadLibrary. 1839 "Landroid/media/EncoderCapabilities;", // Calls OsConstants.initConstants. 1840 "Landroid/media/ExifInterface;", // Calls OsConstants.initConstants. 1841 "Landroid/media/MediaCodec;", // Calls OsConstants.initConstants. 1842 "Landroid/media/MediaCodecList;", // Calls OsConstants.initConstants. 1843 "Landroid/media/MediaCrypto;", // Calls OsConstants.initConstants. 1844 "Landroid/media/MediaDrm;", // Calls OsConstants.initConstants. 1845 "Landroid/media/MediaExtractor;", // Calls OsConstants.initConstants. 1846 "Landroid/media/MediaFile;", // Requires DecoderCapabilities. 1847 "Landroid/media/MediaMetadataRetriever;", // Calls OsConstants.initConstants. 1848 "Landroid/media/MediaMuxer;", // Calls OsConstants.initConstants. 1849 "Landroid/media/MediaPlayer;", // Calls System.loadLibrary. 1850 "Landroid/media/MediaRecorder;", // Calls System.loadLibrary. 1851 "Landroid/media/MediaScanner;", // Calls System.loadLibrary. 1852 "Landroid/media/ResampleInputStream;", // Calls OsConstants.initConstants. 1853 "Landroid/media/SoundPool;", // Calls OsConstants.initConstants. 1854 "Landroid/media/videoeditor/MediaArtistNativeHelper;", // Calls OsConstants.initConstants. 1855 "Landroid/media/videoeditor/VideoEditorProfile;", // Calls OsConstants.initConstants. 1856 "Landroid/mtp/MtpDatabase;", // Calls OsConstants.initConstants. 1857 "Landroid/mtp/MtpDevice;", // Calls OsConstants.initConstants. 1858 "Landroid/mtp/MtpServer;", // Calls OsConstants.initConstants. 1859 "Landroid/net/NetworkInfo;", // Calls java.util.EnumMap.<init> -> java.lang.Enum.getSharedConstants -> System.identityHashCode. 1860 "Landroid/net/Proxy;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1861 "Landroid/net/SSLCertificateSocketFactory;", // Requires javax.net.ssl.HttpsURLConnection. 1862 "Landroid/net/Uri$AbstractHierarchicalUri;", // Requires Uri. 1863 "Landroid/net/Uri$HierarchicalUri;", // Requires Uri. 1864 "Landroid/net/Uri$OpaqueUri;", // Requires Uri. 1865 "Landroid/net/Uri$StringUri;", // Requires Uri. 1866 "Landroid/net/Uri;", // Calls Class.getSimpleName -> Class.isAnonymousClass -> Class.getDex. 1867 "Landroid/net/WebAddress;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1868 "Landroid/net/wifi/WifiNative;", // Calls new LocalLog -> new Time -> TimeZone -> Pattern.compile. 1869 "Landroid/nfc/NdefRecord;", // Calls String.getBytes -> java.nio.charset.Charset. 1870 "Landroid/opengl/EGL14;", // Calls android.opengl.EGL14._nativeClassInit. 1871 "Landroid/opengl/GLES10;", // Calls android.opengl.GLES10._nativeClassInit. 1872 "Landroid/opengl/GLES10Ext;", // Calls android.opengl.GLES10Ext._nativeClassInit. 1873 "Landroid/opengl/GLES11;", // Requires GLES10. 1874 "Landroid/opengl/GLES11Ext;", // Calls android.opengl.GLES11Ext._nativeClassInit. 1875 "Landroid/opengl/GLES20;", // Calls android.opengl.GLES20._nativeClassInit. 1876 "Landroid/opengl/GLUtils;", // Calls android.opengl.GLUtils.nativeClassInit. 1877 "Landroid/os/Build;", // Calls -..-> android.os.SystemProperties.native_get. 1878 "Landroid/os/Build$VERSION;", // Requires Build. 1879 "Landroid/os/Bundle;", // Calls android.os.Parcel.obtain -..> Parcel.nativeCreate. 1880 "Landroid/os/Debug;", // Requires android.os.Environment. 1881 "Landroid/os/Environment;", // Calls System.getenv. 1882 "Landroid/os/FileUtils;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1883 "Landroid/os/StrictMode;", // Calls android.util.Log.isLoggable. 1884 "Landroid/os/StrictMode$VmPolicy;", // Requires StrictMode. 1885 "Landroid/os/Trace;", // Calls android.os.Trace.nativeGetEnabledTags. 1886 "Landroid/os/UEventObserver;", // Calls Class.getSimpleName -> Class.isAnonymousClass -> Class.getDex. 1887 "Landroid/provider/ContactsContract;", // Calls OsConstants.initConstants. 1888 "Landroid/provider/Settings$Global;", // Calls OsConstants.initConstants. 1889 "Landroid/provider/Settings$Secure;", // Requires android.net.Uri. 1890 "Landroid/provider/Settings$System;", // Requires android.net.Uri. 1891 "Landroid/renderscript/RenderScript;", // Calls System.loadLibrary. 1892 "Landroid/server/BluetoothService;", // Calls android.server.BluetoothService.classInitNative. 1893 "Landroid/server/BluetoothEventLoop;", // Calls android.server.BluetoothEventLoop.classInitNative. 1894 "Landroid/telephony/PhoneNumberUtils;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1895 "Landroid/telephony/TelephonyManager;", // Calls OsConstants.initConstants. 1896 "Landroid/text/AutoText;", // Requires android.util.DisplayMetrics -..-> android.os.SystemProperties.native_get_int. 1897 "Landroid/text/Layout;", // Calls com.android.internal.util.ArrayUtils.emptyArray -> System.identityHashCode. 1898 "Landroid/text/BoringLayout;", // Requires Layout. 1899 "Landroid/text/DynamicLayout;", // Requires Layout. 1900 "Landroid/text/Html$HtmlParser;", // Calls -..-> String.toLowerCase -> java.util.Locale. 1901 "Landroid/text/StaticLayout;", // Requires Layout. 1902 "Landroid/text/TextUtils;", // Requires android.util.DisplayMetrics. 1903 "Landroid/util/DisplayMetrics;", // Calls SystemProperties.native_get_int. 1904 "Landroid/util/Patterns;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1905 "Landroid/view/Choreographer;", // Calls SystemProperties.native_get_boolean. 1906 "Landroid/util/Patterns;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1907 "Landroid/view/GLES20Canvas;", // Calls GLES20Canvas.nIsAvailable(). 1908 "Landroid/view/GLES20RecordingCanvas;", // Requires android.view.GLES20Canvas. 1909 "Landroid/view/GestureDetector;", // Calls android.view.GLES20Canvas.nIsAvailable. 1910 "Landroid/view/HardwareRenderer$Gl20Renderer;", // Requires SystemProperties.native_get. 1911 "Landroid/view/HardwareRenderer$GlRenderer;", // Requires SystemProperties.native_get. 1912 "Landroid/view/InputEventConsistencyVerifier;", // Requires android.os.Build. 1913 "Landroid/view/Surface;", // Requires SystemProperties.native_get. 1914 "Landroid/view/SurfaceControl;", // Calls OsConstants.initConstants. 1915 "Landroid/view/animation/AlphaAnimation;", // Requires Animation. 1916 "Landroid/view/animation/Animation;", // Calls SystemProperties.native_get_boolean. 1917 "Landroid/view/animation/AnimationSet;", // Calls OsConstants.initConstants. 1918 "Landroid/view/textservice/SpellCheckerSubtype;", // Calls Class.getDex(). 1919 "Landroid/webkit/JniUtil;", // Calls System.loadLibrary. 1920 "Landroid/webkit/PluginManager;", // // Calls OsConstants.initConstants. 1921 "Landroid/webkit/WebViewCore;", // Calls System.loadLibrary. 1922 "Landroid/webkit/WebViewFactory;", // Calls -..-> android.os.SystemProperties.native_get. 1923 "Landroid/webkit/WebViewFactory$Preloader;", // Calls to Class.forName. 1924 "Landroid/webkit/WebViewInputDispatcher;", // Calls Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1925 "Landroid/webkit/URLUtil;", // Calls Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1926 "Landroid/widget/AutoCompleteTextView;", // Requires TextView. 1927 "Landroid/widget/Button;", // Requires TextView. 1928 "Landroid/widget/CheckBox;", // Requires TextView. 1929 "Landroid/widget/CheckedTextView;", // Requires TextView. 1930 "Landroid/widget/CompoundButton;", // Requires TextView. 1931 "Landroid/widget/EditText;", // Requires TextView. 1932 "Landroid/widget/NumberPicker;", // Requires java.util.Locale. 1933 "Landroid/widget/ScrollBarDrawable;", // Sub-class of Drawable. 1934 "Landroid/widget/SearchView$SearchAutoComplete;", // Requires TextView. 1935 "Landroid/widget/Switch;", // Requires TextView. 1936 "Landroid/widget/TextView;", // Calls Paint.<init> -> Paint.native_init. 1937 "Lcom/android/i18n/phonenumbers/AsYouTypeFormatter;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1938 "Lcom/android/i18n/phonenumbers/MetadataManager;", // Calls OsConstants.initConstants. 1939 "Lcom/android/i18n/phonenumbers/PhoneNumberMatcher;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 1940 "Lcom/android/i18n/phonenumbers/PhoneNumberUtil;", // Requires java.util.logging.LogManager. 1941 "Lcom/android/i18n/phonenumbers/geocoding/AreaCodeMap;", // Calls OsConstants.initConstants. 1942 "Lcom/android/i18n/phonenumbers/geocoding/PhoneNumberOfflineGeocoder;", // Calls OsConstants.initConstants. 1943 "Lcom/android/internal/os/SamplingProfilerIntegration;", // Calls SystemProperties.native_get_int. 1944 "Lcom/android/internal/policy/impl/PhoneWindow;", // Calls android.os.Binder.init. 1945 "Lcom/android/internal/view/menu/ActionMenuItemView;", // Requires TextView. 1946 "Lcom/android/internal/widget/DialogTitle;", // Requires TextView. 1947 "Lcom/android/org/bouncycastle/asn1/StreamUtil;", // Calls Runtime.getRuntime().maxMemory(). 1948 "Lcom/android/org/bouncycastle/asn1/pkcs/MacData;", // Calls native ... -> java.math.NativeBN.BN_new(). 1949 "Lcom/android/org/bouncycastle/asn1/pkcs/RSASSAPSSparams;", // Calls native ... -> java.math.NativeBN.BN_new(). 1950 "Lcom/android/org/bouncycastle/asn1/cms/SignedData;", // Calls native ... -> java.math.NativeBN.BN_new(). 1951 "Lcom/android/org/bouncycastle/asn1/x509/GeneralSubtree;", // Calls native ... -> java.math.NativeBN.BN_new(). 1952 "Lcom/android/org/bouncycastle/asn1/x9/X9ECParameters;", // Calls native ... -> java.math.NativeBN.BN_new(). 1953 "Lcom/android/org/bouncycastle/crypto/digests/OpenSSLDigest$MD5;", // Requires com.android.org.conscrypt.NativeCrypto. 1954 "Lcom/android/org/bouncycastle/crypto/digests/OpenSSLDigest$SHA1;", // Requires com.android.org.conscrypt.NativeCrypto. 1955 "Lcom/android/org/bouncycastle/crypto/digests/OpenSSLDigest$SHA256;", // Requires com.android.org.conscrypt.NativeCrypto. 1956 "Lcom/android/org/bouncycastle/crypto/digests/OpenSSLDigest$SHA384;", // Requires com.android.org.conscrypt.NativeCrypto. 1957 "Lcom/android/org/bouncycastle/crypto/digests/OpenSSLDigest$SHA512;", // Requires com.android.org.conscrypt.NativeCrypto. 1958 "Lcom/android/org/bouncycastle/crypto/engines/RSABlindedEngine;", // Calls native ... -> java.math.NativeBN.BN_new(). 1959 "Lcom/android/org/bouncycastle/crypto/generators/DHKeyGeneratorHelper;", // Calls native ... -> java.math.NativeBN.BN_new(). 1960 "Lcom/android/org/bouncycastle/crypto/generators/DHParametersGenerator;", // Calls native ... -> java.math.NativeBN.BN_new(). 1961 "Lcom/android/org/bouncycastle/crypto/generators/DHParametersHelper;", // Calls System.getenv -> OsConstants.initConstants. 1962 "Lcom/android/org/bouncycastle/crypto/generators/DSAKeyPairGenerator;", // Calls native ... -> java.math.NativeBN.BN_new(). 1963 "Lcom/android/org/bouncycastle/crypto/generators/DSAParametersGenerator;", // Calls native ... -> java.math.NativeBN.BN_new(). 1964 "Lcom/android/org/bouncycastle/crypto/generators/RSAKeyPairGenerator;", // Calls native ... -> java.math.NativeBN.BN_new(). 1965 "Lcom/android/org/bouncycastle/jcajce/provider/asymmetric/dh/KeyPairGeneratorSpi;", // Calls OsConstants.initConstants. 1966 "Lcom/android/org/bouncycastle/jcajce/provider/asymmetric/dsa/KeyPairGeneratorSpi;", // Calls OsConstants.initConstants. 1967 "Lcom/android/org/bouncycastle/jcajce/provider/asymmetric/ec/KeyPairGeneratorSpi$EC;", // Calls OsConstants.initConstants. 1968 "Lcom/android/org/bouncycastle/jcajce/provider/asymmetric/ec/KeyPairGeneratorSpi$ECDH;", // Calls OsConstants.initConstants. 1969 "Lcom/android/org/bouncycastle/jcajce/provider/asymmetric/ec/KeyPairGeneratorSpi$ECDHC;", // Calls OsConstants.initConstants. 1970 "Lcom/android/org/bouncycastle/jcajce/provider/asymmetric/ec/KeyPairGeneratorSpi$ECDSA;", // Calls OsConstants.initConstants. 1971 "Lcom/android/org/bouncycastle/jcajce/provider/asymmetric/ec/KeyPairGeneratorSpi$ECMQV;", // Calls OsConstants.initConstants. 1972 "Lcom/android/org/bouncycastle/jcajce/provider/asymmetric/ec/KeyPairGeneratorSpi;", // Calls OsConstants.initConstants. 1973 "Lcom/android/org/bouncycastle/jcajce/provider/asymmetric/rsa/BCRSAPrivateCrtKey;", // Calls native ... -> java.math.NativeBN.BN_new(). 1974 "Lcom/android/org/bouncycastle/jcajce/provider/asymmetric/rsa/BCRSAPrivateKey;", // Calls native ... -> java.math.NativeBN.BN_new(). 1975 "Lcom/android/org/bouncycastle/jcajce/provider/asymmetric/rsa/KeyPairGeneratorSpi;", // Calls OsConstants.initConstants. 1976 "Lcom/android/org/bouncycastle/jcajce/provider/keystore/pkcs12/PKCS12KeyStoreSpi$BCPKCS12KeyStore;", // Calls Thread.currentThread. 1977 "Lcom/android/org/bouncycastle/jcajce/provider/keystore/pkcs12/PKCS12KeyStoreSpi;", // Calls Thread.currentThread. 1978 "Lcom/android/org/bouncycastle/jce/PKCS10CertificationRequest;", // Calls native ... -> java.math.NativeBN.BN_new(). 1979 "Lcom/android/org/bouncycastle/jce/provider/CertBlacklist;", // Calls System.getenv -> OsConstants.initConstants. 1980 "Lcom/android/org/bouncycastle/jce/provider/JCERSAPrivateCrtKey;", // Calls native ... -> java.math.NativeBN.BN_new(). 1981 "Lcom/android/org/bouncycastle/jce/provider/JCERSAPrivateKey;", // Calls native ... -> java.math.NativeBN.BN_new(). 1982 "Lcom/android/org/bouncycastle/jce/provider/PKIXCertPathValidatorSpi;", // Calls System.getenv -> OsConstants.initConstants. 1983 "Lcom/android/org/bouncycastle/math/ec/ECConstants;", // Calls native ... -> java.math.NativeBN.BN_new(). 1984 "Lcom/android/org/bouncycastle/math/ec/Tnaf;", // Calls native ... -> java.math.NativeBN.BN_new(). 1985 "Lcom/android/org/bouncycastle/util/BigIntegers;", // Calls native ... -> java.math.NativeBN.BN_new(). 1986 "Lcom/android/org/bouncycastle/x509/X509Util;", // Calls native ... -> java.math.NativeBN.BN_new(). 1987 "Lcom/android/org/conscrypt/CipherSuite;", // Calls OsConstants.initConstants. 1988 "Lcom/android/org/conscrypt/FileClientSessionCache$CacheFile;", // Calls OsConstants.initConstants. 1989 "Lcom/android/org/conscrypt/HandshakeIODataStream;", // Calls OsConstants.initConstants. 1990 "Lcom/android/org/conscrypt/Logger;", // Calls OsConstants.initConstants. 1991 "Lcom/android/org/conscrypt/NativeCrypto;", // Calls native NativeCrypto.clinit(). 1992 "Lcom/android/org/conscrypt/OpenSSLECKeyPairGenerator;", // Calls OsConstants.initConstants. 1993 "Lcom/android/org/conscrypt/OpenSSLEngine;", // Requires com.android.org.conscrypt.NativeCrypto. 1994 "Lcom/android/org/conscrypt/OpenSSLMac$HmacMD5;", // Calls native NativeCrypto.clinit(). 1995 "Lcom/android/org/conscrypt/OpenSSLMac$HmacSHA1;", // Calls native NativeCrypto.clinit(). 1996 "Lcom/android/org/conscrypt/OpenSSLMac$HmacSHA256;", // Calls native NativeCrypto.clinit(). 1997 "Lcom/android/org/conscrypt/OpenSSLMac$HmacSHA384;", // Calls native NativeCrypto.clinit(). 1998 "Lcom/android/org/conscrypt/OpenSSLMac$HmacSHA512;", // Calls native NativeCrypto.clinit(). 1999 "Lcom/android/org/conscrypt/OpenSSLMessageDigestJDK$MD5;", // Requires com.android.org.conscrypt.NativeCrypto. 2000 "Lcom/android/org/conscrypt/OpenSSLMessageDigestJDK$SHA1;", // Requires com.android.org.conscrypt.NativeCrypto. 2001 "Lcom/android/org/conscrypt/OpenSSLMessageDigestJDK$SHA256;", // Requires com.android.org.conscrypt.NativeCrypto. 2002 "Lcom/android/org/conscrypt/OpenSSLMessageDigestJDK$SHA384;", // Requires com.android.org.conscrypt.NativeCrypto. 2003 "Lcom/android/org/conscrypt/OpenSSLMessageDigestJDK$SHA512;", // Requires com.android.org.conscrypt.NativeCrypto. 2004 "Lcom/android/org/conscrypt/OpenSSLX509CertPath;", // Calls OsConstants.initConstants. 2005 "Lcom/android/org/conscrypt/OpenSSLX509CertificateFactory;", // Calls OsConstants.initConstants. 2006 "Lcom/android/org/conscrypt/PRF;", // Calls OsConstants.initConstants. 2007 "Lcom/android/org/conscrypt/SSLSessionImpl;", // Calls OsConstants.initConstants. 2008 "Lcom/android/org/conscrypt/TrustedCertificateStore;", // Calls System.getenv -> OsConstants.initConstants. 2009 "Lcom/android/okhttp/ConnectionPool;", // Calls OsConstants.initConstants. 2010 "Lcom/android/okhttp/OkHttpClient;", // Calls OsConstants.initConstants. 2011 "Lcom/android/okhttp/internal/DiskLruCache;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 2012 "Lcom/android/okhttp/internal/Util;", // Calls OsConstants.initConstants. 2013 "Lcom/android/okhttp/internal/http/HttpsURLConnectionImpl;", // Calls VMClassLoader.getBootClassPathSize. 2014 "Lcom/android/okhttp/internal/spdy/SpdyConnection;", // Calls OsConstants.initConstants. 2015 "Lcom/android/okhttp/internal/spdy/SpdyReader;", // Calls OsConstants.initConstants. 2016 "Lcom/android/okhttp/internal/tls/OkHostnameVerifier;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 2017 "Lcom/google/android/gles_jni/EGLContextImpl;", // Calls com.google.android.gles_jni.EGLImpl._nativeClassInit. 2018 "Lcom/google/android/gles_jni/EGLImpl;", // Calls com.google.android.gles_jni.EGLImpl._nativeClassInit. 2019 "Lcom/google/android/gles_jni/GLImpl;", // Calls com.google.android.gles_jni.GLImpl._nativeClassInit. 2020 "Lgov/nist/core/GenericObject;", // Calls OsConstants.initConstants. 2021 "Lgov/nist/core/Host;", // Calls OsConstants.initConstants. 2022 "Lgov/nist/core/HostPort;", // Calls OsConstants.initConstants. 2023 "Lgov/nist/core/NameValue;", // Calls OsConstants.initConstants. 2024 "Lgov/nist/core/net/DefaultNetworkLayer;", // Calls OsConstants.initConstants. 2025 "Lgov/nist/javax/sip/Utils;", // Calls OsConstants.initConstants. 2026 "Lgov/nist/javax/sip/address/AddressImpl;", // Calls OsConstants.initConstants. 2027 "Lgov/nist/javax/sip/address/Authority;", // Calls OsConstants.initConstants. 2028 "Lgov/nist/javax/sip/address/GenericURI;", // Calls OsConstants.initConstants. 2029 "Lgov/nist/javax/sip/address/NetObject;", // Calls OsConstants.initConstants. 2030 "Lgov/nist/javax/sip/address/SipUri;", // Calls OsConstants.initConstants. 2031 "Lgov/nist/javax/sip/address/TelephoneNumber;", // Calls OsConstants.initConstants. 2032 "Lgov/nist/javax/sip/address/UserInfo;", // Calls OsConstants.initConstants. 2033 "Lgov/nist/javax/sip/header/Accept;", // Calls OsConstants.initConstants. 2034 "Lgov/nist/javax/sip/header/AcceptEncoding;", // Calls OsConstants.initConstants. 2035 "Lgov/nist/javax/sip/header/AcceptLanguage;", // Calls OsConstants.initConstants. 2036 "Lgov/nist/javax/sip/header/AddressParametersHeader;", // Calls OsConstants.initConstants. 2037 "Lgov/nist/javax/sip/header/AlertInfoList;", // Calls OsConstants.initConstants. 2038 "Lgov/nist/javax/sip/header/AllowEvents;", // Calls OsConstants.initConstants. 2039 "Lgov/nist/javax/sip/header/AllowEventsList;", // Calls OsConstants.initConstants. 2040 "Lgov/nist/javax/sip/header/AuthenticationInfo;", // Calls OsConstants.initConstants. 2041 "Lgov/nist/javax/sip/header/Authorization;", // Calls OsConstants.initConstants. 2042 "Lgov/nist/javax/sip/header/CSeq;", // Calls OsConstants.initConstants. 2043 "Lgov/nist/javax/sip/header/CallIdentifier;", // Calls OsConstants.initConstants. 2044 "Lgov/nist/javax/sip/header/Challenge;", // Calls OsConstants.initConstants. 2045 "Lgov/nist/javax/sip/header/ContactList;", // Calls OsConstants.initConstants. 2046 "Lgov/nist/javax/sip/header/ContentEncoding;", // Calls OsConstants.initConstants. 2047 "Lgov/nist/javax/sip/header/ContentEncodingList;", // Calls OsConstants.initConstants. 2048 "Lgov/nist/javax/sip/header/ContentLanguageList;", // Calls OsConstants.initConstants. 2049 "Lgov/nist/javax/sip/header/ContentType;", // Calls OsConstants.initConstants. 2050 "Lgov/nist/javax/sip/header/Credentials;", // Calls OsConstants.initConstants. 2051 "Lgov/nist/javax/sip/header/ErrorInfoList;", // Calls OsConstants.initConstants. 2052 "Lgov/nist/javax/sip/header/Expires;", // Calls OsConstants.initConstants. 2053 "Lgov/nist/javax/sip/header/From;", // Calls OsConstants.initConstants. 2054 "Lgov/nist/javax/sip/header/MimeVersion;", // Calls OsConstants.initConstants. 2055 "Lgov/nist/javax/sip/header/NameMap;", // Calls OsConstants.initConstants. 2056 "Lgov/nist/javax/sip/header/Priority;", // Calls OsConstants.initConstants. 2057 "Lgov/nist/javax/sip/header/Protocol;", // Calls OsConstants.initConstants. 2058 "Lgov/nist/javax/sip/header/ProxyAuthenticate;", // Calls OsConstants.initConstants. 2059 "Lgov/nist/javax/sip/header/ProxyAuthenticateList;", // Calls OsConstants.initConstants. 2060 "Lgov/nist/javax/sip/header/ProxyAuthorizationList;", // Calls OsConstants.initConstants. 2061 "Lgov/nist/javax/sip/header/ProxyRequire;", // Calls OsConstants.initConstants. 2062 "Lgov/nist/javax/sip/header/ProxyRequireList;", // Calls OsConstants.initConstants. 2063 "Lgov/nist/javax/sip/header/RSeq;", // Calls OsConstants.initConstants. 2064 "Lgov/nist/javax/sip/header/RecordRoute;", // Calls OsConstants.initConstants. 2065 "Lgov/nist/javax/sip/header/ReferTo;", // Calls OsConstants.initConstants. 2066 "Lgov/nist/javax/sip/header/RequestLine;", // Calls OsConstants.initConstants. 2067 "Lgov/nist/javax/sip/header/Require;", // Calls OsConstants.initConstants. 2068 "Lgov/nist/javax/sip/header/RetryAfter;", // Calls OsConstants.initConstants. 2069 "Lgov/nist/javax/sip/header/SIPETag;", // Calls OsConstants.initConstants. 2070 "Lgov/nist/javax/sip/header/SIPHeader;", // Calls OsConstants.initConstants. 2071 "Lgov/nist/javax/sip/header/SIPHeaderNamesCache;", // Calls OsConstants.initConstants. 2072 "Lgov/nist/javax/sip/header/StatusLine;", // Calls OsConstants.initConstants. 2073 "Lgov/nist/javax/sip/header/SubscriptionState;", // Calls OsConstants.initConstants. 2074 "Lgov/nist/javax/sip/header/TimeStamp;", // Calls OsConstants.initConstants. 2075 "Lgov/nist/javax/sip/header/UserAgent;", // Calls OsConstants.initConstants. 2076 "Lgov/nist/javax/sip/header/Unsupported;", // Calls OsConstants.initConstants. 2077 "Lgov/nist/javax/sip/header/Warning;", // Calls OsConstants.initConstants. 2078 "Lgov/nist/javax/sip/header/ViaList;", // Calls OsConstants.initConstants. 2079 "Lgov/nist/javax/sip/header/extensions/Join;", // Calls OsConstants.initConstants. 2080 "Lgov/nist/javax/sip/header/extensions/References;", // Calls OsConstants.initConstants. 2081 "Lgov/nist/javax/sip/header/extensions/Replaces;", // Calls OsConstants.initConstants. 2082 "Lgov/nist/javax/sip/header/ims/PAccessNetworkInfo;", // Calls OsConstants.initConstants. 2083 "Lgov/nist/javax/sip/header/ims/PAssertedIdentity;", // Calls OsConstants.initConstants. 2084 "Lgov/nist/javax/sip/header/ims/PAssertedIdentityList;", // Calls OsConstants.initConstants. 2085 "Lgov/nist/javax/sip/header/ims/PAssociatedURI;", // Calls OsConstants.initConstants. 2086 "Lgov/nist/javax/sip/header/ims/PCalledPartyID;", // Calls OsConstants.initConstants. 2087 "Lgov/nist/javax/sip/header/ims/PChargingVector;", // Calls OsConstants.initConstants. 2088 "Lgov/nist/javax/sip/header/ims/PPreferredIdentity;", // Calls OsConstants.initConstants. 2089 "Lgov/nist/javax/sip/header/ims/PVisitedNetworkIDList;", // Calls OsConstants.initConstants. 2090 "Lgov/nist/javax/sip/header/ims/PathList;", // Calls OsConstants.initConstants. 2091 "Lgov/nist/javax/sip/header/ims/SecurityAgree;", // Calls OsConstants.initConstants. 2092 "Lgov/nist/javax/sip/header/ims/SecurityClient;", // Calls OsConstants.initConstants. 2093 "Lgov/nist/javax/sip/header/ims/ServiceRoute;", // Calls OsConstants.initConstants. 2094 "Ljava/io/Console;", // Has FileDescriptor(s). 2095 "Ljava/io/File;", // Calls to Random.<init> -> System.currentTimeMillis -> OsConstants.initConstants. 2096 "Ljava/io/FileDescriptor;", // Requires libcore.io.OsConstants. 2097 "Ljava/io/ObjectInputStream;", // Requires java.lang.ClassLoader$SystemClassLoader. 2098 "Ljava/io/ObjectStreamClass;", // Calls to Class.forName -> java.io.FileDescriptor. 2099 "Ljava/io/ObjectStreamConstants;", // Instance of non-image class SerializablePermission. 2100 "Ljava/lang/ClassLoader$SystemClassLoader;", // Calls System.getProperty -> OsConstants.initConstants. 2101 "Ljava/lang/HexStringParser;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 2102 "Ljava/lang/ProcessManager;", // Calls Thread.currentThread. 2103 "Ljava/lang/Runtime;", // Calls System.getProperty -> OsConstants.initConstants. 2104 "Ljava/lang/System;", // Calls OsConstants.initConstants. 2105 "Ljava/math/BigDecimal;", // Calls native ... -> java.math.NativeBN.BN_new(). 2106 "Ljava/math/BigInteger;", // Calls native ... -> java.math.NativeBN.BN_new(). 2107 "Ljava/math/Primality;", // Calls native ... -> java.math.NativeBN.BN_new(). 2108 "Ljava/math/Multiplication;", // Calls native ... -> java.math.NativeBN.BN_new(). 2109 "Ljava/net/InetAddress;", // Requires libcore.io.OsConstants. 2110 "Ljava/net/Inet4Address;", // Sub-class of InetAddress. 2111 "Ljava/net/Inet6Address;", // Sub-class of InetAddress. 2112 "Ljava/net/InetUnixAddress;", // Sub-class of InetAddress. 2113 "Ljava/net/NetworkInterface;", // Calls to Random.<init> -> System.currentTimeMillis -> OsConstants.initConstants. 2114 "Ljava/nio/charset/Charset;", // Calls Charset.getDefaultCharset -> System.getProperty -> OsConstants.initConstants. 2115 "Ljava/nio/charset/CharsetICU;", // Sub-class of Charset. 2116 "Ljava/nio/charset/Charsets;", // Calls Charset.forName. 2117 "Ljava/nio/charset/StandardCharsets;", // Calls OsConstants.initConstants. 2118 "Ljava/security/AlgorithmParameterGenerator;", // Calls OsConstants.initConstants. 2119 "Ljava/security/KeyPairGenerator$KeyPairGeneratorImpl;", // Calls OsConstants.initConstants. 2120 "Ljava/security/KeyPairGenerator;", // Calls OsConstants.initConstants. 2121 "Ljava/security/Security;", // Tries to do disk IO for "security.properties". 2122 "Ljava/security/spec/RSAKeyGenParameterSpec;", // java.math.NativeBN.BN_new() 2123 "Ljava/sql/Date;", // Calls OsConstants.initConstants. 2124 "Ljava/sql/DriverManager;", // Calls OsConstants.initConstants. 2125 "Ljava/sql/Time;", // Calls OsConstants.initConstants. 2126 "Ljava/sql/Timestamp;", // Calls OsConstants.initConstants. 2127 "Ljava/util/Date;", // Calls Date.<init> -> System.currentTimeMillis -> OsConstants.initConstants. 2128 "Ljava/util/ListResourceBundle;", // Calls OsConstants.initConstants. 2129 "Ljava/util/Locale;", // Calls System.getProperty -> OsConstants.initConstants. 2130 "Ljava/util/PropertyResourceBundle;", // Calls OsConstants.initConstants. 2131 "Ljava/util/ResourceBundle;", // Calls OsConstants.initConstants. 2132 "Ljava/util/ResourceBundle$MissingBundle;", // Calls OsConstants.initConstants. 2133 "Ljava/util/Scanner;", // regex.Pattern.compileImpl. 2134 "Ljava/util/SimpleTimeZone;", // Sub-class of TimeZone. 2135 "Ljava/util/TimeZone;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 2136 "Ljava/util/concurrent/ConcurrentHashMap;", // Calls Runtime.getRuntime().availableProcessors(). 2137 "Ljava/util/concurrent/ConcurrentHashMap$Segment;", // Calls Runtime.getRuntime().availableProcessors(). 2138 "Ljava/util/concurrent/ConcurrentSkipListMap;", // Calls Random() -> OsConstants.initConstants. 2139 "Ljava/util/concurrent/Exchanger;", // Calls Runtime.getRuntime().availableProcessors(). 2140 "Ljava/util/concurrent/ForkJoinPool;", // Makes a thread pool ..-> calls OsConstants.initConstants. 2141 "Ljava/util/concurrent/LinkedTransferQueue;", // Calls Runtime.getRuntime().availableProcessors(). 2142 "Ljava/util/concurrent/Phaser;", // Calls Runtime.getRuntime().availableProcessors(). 2143 "Ljava/util/concurrent/ScheduledThreadPoolExecutor;", // Calls AtomicLong.VMSupportsCS8() 2144 "Ljava/util/concurrent/SynchronousQueue;", // Calls Runtime.getRuntime().availableProcessors(). 2145 "Ljava/util/concurrent/atomic/AtomicLong;", // Calls AtomicLong.VMSupportsCS8() 2146 "Ljava/util/logging/LogManager;", // Calls System.getProperty -> OsConstants.initConstants. 2147 "Ljava/util/prefs/AbstractPreferences;", // Calls OsConstants.initConstants. 2148 "Ljava/util/prefs/FilePreferencesImpl;", // Calls OsConstants.initConstants. 2149 "Ljava/util/prefs/FilePreferencesFactoryImpl;", // Calls OsConstants.initConstants. 2150 "Ljava/util/prefs/Preferences;", // Calls OsConstants.initConstants. 2151 "Ljavax/crypto/KeyAgreement;", // Calls OsConstants.initConstants. 2152 "Ljavax/crypto/KeyGenerator;", // Calls OsConstants.initConstants. 2153 "Ljavax/security/cert/X509Certificate;", // Calls VMClassLoader.getBootClassPathSize. 2154 "Ljavax/security/cert/X509Certificate$1;", // Calls VMClassLoader.getBootClassPathSize. 2155 "Ljavax/microedition/khronos/egl/EGL10;", // Requires EGLContext. 2156 "Ljavax/microedition/khronos/egl/EGLContext;", // Requires com.google.android.gles_jni.EGLImpl. 2157 "Ljavax/xml/datatype/DatatypeConstants;", // Calls OsConstants.initConstants. 2158 "Ljavax/xml/datatype/FactoryFinder;", // Calls OsConstants.initConstants. 2159 "Ljavax/xml/namespace/QName;", // Calls OsConstants.initConstants. 2160 "Ljavax/xml/validation/SchemaFactoryFinder;", // Calls OsConstants.initConstants. 2161 "Ljavax/xml/xpath/XPathConstants;", // Calls OsConstants.initConstants. 2162 "Ljavax/xml/xpath/XPathFactoryFinder;", // Calls OsConstants.initConstants. 2163 "Llibcore/icu/LocaleData;", // Requires java.util.Locale. 2164 "Llibcore/icu/TimeZoneNames;", // Requires java.util.TimeZone. 2165 "Llibcore/io/IoUtils;", // Calls Random.<init> -> System.currentTimeMillis -> FileDescriptor -> OsConstants.initConstants. 2166 "Llibcore/io/OsConstants;", // Platform specific. 2167 "Llibcore/net/MimeUtils;", // Calls libcore.net.MimeUtils.getContentTypesPropertiesStream -> System.getProperty. 2168 "Llibcore/reflect/Types;", // Calls OsConstants.initConstants. 2169 "Llibcore/util/ZoneInfo;", // Sub-class of TimeZone. 2170 "Llibcore/util/ZoneInfoDB;", // Calls System.getenv -> OsConstants.initConstants. 2171 "Lorg/apache/commons/logging/LogFactory;", // Calls System.getProperty. 2172 "Lorg/apache/commons/logging/impl/LogFactoryImpl;", // Calls OsConstants.initConstants. 2173 "Lorg/apache/harmony/security/fortress/Services;", // Calls ClassLoader.getSystemClassLoader -> System.getProperty. 2174 "Lorg/apache/harmony/security/provider/cert/X509CertFactoryImpl;", // Requires java.nio.charsets.Charsets. 2175 "Lorg/apache/harmony/security/provider/crypto/RandomBitsSupplier;", // Requires java.io.File. 2176 "Lorg/apache/harmony/security/utils/AlgNameMapper;", // Requires java.util.Locale. 2177 "Lorg/apache/harmony/security/pkcs10/CertificationRequest;", // Calls Thread.currentThread. 2178 "Lorg/apache/harmony/security/pkcs10/CertificationRequestInfo;", // Calls Thread.currentThread. 2179 "Lorg/apache/harmony/security/pkcs7/AuthenticatedAttributes;", // Calls Thread.currentThread. 2180 "Lorg/apache/harmony/security/pkcs7/SignedData;", // Calls Thread.currentThread. 2181 "Lorg/apache/harmony/security/pkcs7/SignerInfo;", // Calls Thread.currentThread. 2182 "Lorg/apache/harmony/security/pkcs8/PrivateKeyInfo;", // Calls Thread.currentThread. 2183 "Lorg/apache/harmony/security/provider/crypto/SHA1PRNG_SecureRandomImpl;", // Calls OsConstants.initConstants. 2184 "Lorg/apache/harmony/security/x501/AttributeTypeAndValue;", // Calls IntegralToString.convertInt -> Thread.currentThread. 2185 "Lorg/apache/harmony/security/x501/DirectoryString;", // Requires BigInteger. 2186 "Lorg/apache/harmony/security/x501/Name;", // Requires org.apache.harmony.security.x501.AttributeTypeAndValue. 2187 "Lorg/apache/harmony/security/x509/AccessDescription;", // Calls Thread.currentThread. 2188 "Lorg/apache/harmony/security/x509/AuthorityKeyIdentifier;", // Calls Thread.currentThread. 2189 "Lorg/apache/harmony/security/x509/CRLDistributionPoints;", // Calls Thread.currentThread. 2190 "Lorg/apache/harmony/security/x509/Certificate;", // Requires org.apache.harmony.security.x509.TBSCertificate. 2191 "Lorg/apache/harmony/security/x509/CertificateIssuer;", // Calls Thread.currentThread. 2192 "Lorg/apache/harmony/security/x509/CertificateList;", // Calls Thread.currentThread. 2193 "Lorg/apache/harmony/security/x509/DistributionPoint;", // Calls Thread.currentThread. 2194 "Lorg/apache/harmony/security/x509/DistributionPointName;", // Calls Thread.currentThread. 2195 "Lorg/apache/harmony/security/x509/EDIPartyName;", // Calls native ... -> java.math.NativeBN.BN_new(). 2196 "Lorg/apache/harmony/security/x509/GeneralName;", // Requires org.apache.harmony.security.x501.Name. 2197 "Lorg/apache/harmony/security/x509/GeneralNames;", // Requires GeneralName. 2198 "Lorg/apache/harmony/security/x509/GeneralSubtree;", // Calls Thread.currentThread. 2199 "Lorg/apache/harmony/security/x509/GeneralSubtrees;", // Calls Thread.currentThread. 2200 "Lorg/apache/harmony/security/x509/InfoAccessSyntax;", // Calls Thread.currentThread. 2201 "Lorg/apache/harmony/security/x509/IssuingDistributionPoint;", // Calls Thread.currentThread. 2202 "Lorg/apache/harmony/security/x509/NameConstraints;", // Calls Thread.currentThread. 2203 "Lorg/apache/harmony/security/x509/TBSCertList$RevokedCertificate;", // Calls NativeBN.BN_new(). 2204 "Lorg/apache/harmony/security/x509/TBSCertList;", // Calls Thread.currentThread. 2205 "Lorg/apache/harmony/security/x509/TBSCertificate;", // Requires org.apache.harmony.security.x501.Name. 2206 "Lorg/apache/harmony/security/x509/Time;", // Calls native ... -> java.math.NativeBN.BN_new(). 2207 "Lorg/apache/harmony/security/x509/Validity;", // Requires x509.Time. 2208 "Lorg/apache/harmony/security/x509/tsp/TSTInfo;", // Calls Thread.currentThread. 2209 "Lorg/apache/harmony/xml/ExpatParser;", // Calls native ExpatParser.staticInitialize. 2210 "Lorg/apache/harmony/xml/ExpatParser$EntityParser;", // Calls ExpatParser.staticInitialize. 2211 "Lorg/apache/http/conn/params/ConnRouteParams;", // Requires java.util.Locale. 2212 "Lorg/apache/http/conn/ssl/SSLSocketFactory;", // Calls java.security.Security.getProperty. 2213 "Lorg/apache/http/conn/util/InetAddressUtils;", // Calls regex.Pattern.compile -..-> regex.Pattern.compileImpl. 2214}; 2215 2216static void InitializeClass(const ParallelCompilationManager* manager, size_t class_def_index) 2217 LOCKS_EXCLUDED(Locks::mutator_lock_) { 2218 ATRACE_CALL(); 2219 jobject jclass_loader = manager->GetClassLoader(); 2220 const DexFile& dex_file = *manager->GetDexFile(); 2221 const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); 2222 const DexFile::TypeId& class_type_id = dex_file.GetTypeId(class_def.class_idx_); 2223 const char* descriptor = dex_file.StringDataByIdx(class_type_id.descriptor_idx_); 2224 2225 ScopedObjectAccess soa(Thread::Current()); 2226 SirtRef<mirror::ClassLoader> class_loader(soa.Self(), 2227 soa.Decode<mirror::ClassLoader*>(jclass_loader)); 2228 SirtRef<mirror::Class> klass(soa.Self(), 2229 manager->GetClassLinker()->FindClass(descriptor, class_loader)); 2230 2231 if (klass.get() != nullptr && !SkipClass(jclass_loader, dex_file, klass.get())) { 2232 // Only try to initialize classes that were successfully verified. 2233 if (klass->IsVerified()) { 2234 // Attempt to initialize the class but bail if we either need to initialize the super-class 2235 // or static fields. 2236 manager->GetClassLinker()->EnsureInitialized(klass, false, false); 2237 if (!klass->IsInitialized()) { 2238 // We don't want non-trivial class initialization occurring on multiple threads due to 2239 // deadlock problems. For example, a parent class is initialized (holding its lock) that 2240 // refers to a sub-class in its static/class initializer causing it to try to acquire the 2241 // sub-class' lock. While on a second thread the sub-class is initialized (holding its lock) 2242 // after first initializing its parents, whose locks are acquired. This leads to a 2243 // parent-to-child and a child-to-parent lock ordering and consequent potential deadlock. 2244 // We need to use an ObjectLock due to potential suspension in the interpreting code. Rather 2245 // than use a special Object for the purpose we use the Class of java.lang.Class. 2246 SirtRef<mirror::Class> sirt_klass(soa.Self(), klass->GetClass()); 2247 ObjectLock<mirror::Class> lock(soa.Self(), &sirt_klass); 2248 // Attempt to initialize allowing initialization of parent classes but still not static 2249 // fields. 2250 manager->GetClassLinker()->EnsureInitialized(klass, false, true); 2251 if (!klass->IsInitialized()) { 2252 // We need to initialize static fields, we only do this for image classes that aren't 2253 // black listed or marked with the $NoPreloadHolder. 2254 bool can_init_static_fields = manager->GetCompiler()->IsImage() && 2255 manager->GetCompiler()->IsImageClass(descriptor); 2256 if (can_init_static_fields) { 2257 // NoPreloadHolder inner class implies this should not be initialized early. 2258 bool is_black_listed = StringPiece(descriptor).ends_with("$NoPreloadHolder;"); 2259 if (!is_black_listed) { 2260 for (size_t i = 0; i < arraysize(class_initializer_black_list); ++i) { 2261 if (strcmp(descriptor, class_initializer_black_list[i]) == 0) { 2262 is_black_listed = true; 2263 break; 2264 } 2265 } 2266 } 2267 if (!is_black_listed) { 2268 VLOG(compiler) << "Initializing: " << descriptor; 2269 if (strcmp("Ljava/lang/Void;", descriptor) == 0) { 2270 // Hand initialize j.l.Void to avoid Dex file operations in un-started runtime. 2271 ObjectLock<mirror::Class> lock(soa.Self(), &klass); 2272 mirror::ObjectArray<mirror::ArtField>* fields = klass->GetSFields(); 2273 CHECK_EQ(fields->GetLength(), 1); 2274 fields->Get(0)->SetObj(klass.get(), 2275 manager->GetClassLinker()->FindPrimitiveClass('V')); 2276 klass->SetStatus(mirror::Class::kStatusInitialized, soa.Self()); 2277 } else { 2278 manager->GetClassLinker()->EnsureInitialized(klass, true, true); 2279 } 2280 } 2281 } 2282 } 2283 soa.Self()->AssertNoPendingException(); 2284 } 2285 } 2286 // Record the final class status if necessary. 2287 ClassReference ref(manager->GetDexFile(), class_def_index); 2288 manager->GetCompiler()->RecordClassStatus(ref, klass->GetStatus()); 2289 } 2290 // Clear any class not found or verification exceptions. 2291 soa.Self()->ClearException(); 2292} 2293 2294void CompilerDriver::InitializeClasses(jobject jni_class_loader, const DexFile& dex_file, 2295 ThreadPool& thread_pool, TimingLogger& timings) { 2296 timings.NewSplit("InitializeNoClinit"); 2297#ifndef NDEBUG 2298 // Sanity check blacklist descriptors. 2299 if (IsImage()) { 2300 for (size_t i = 0; i < arraysize(class_initializer_black_list); ++i) { 2301 const char* descriptor = class_initializer_black_list[i]; 2302 CHECK(IsValidDescriptor(descriptor)) << descriptor; 2303 } 2304 } 2305#endif 2306 ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); 2307 ParallelCompilationManager context(class_linker, jni_class_loader, this, &dex_file, thread_pool); 2308 context.ForAll(0, dex_file.NumClassDefs(), InitializeClass, thread_count_); 2309} 2310 2311void CompilerDriver::InitializeClasses(jobject class_loader, 2312 const std::vector<const DexFile*>& dex_files, 2313 ThreadPool& thread_pool, TimingLogger& timings) { 2314 for (size_t i = 0; i != dex_files.size(); ++i) { 2315 const DexFile* dex_file = dex_files[i]; 2316 CHECK(dex_file != NULL); 2317 InitializeClasses(class_loader, *dex_file, thread_pool, timings); 2318 } 2319} 2320 2321void CompilerDriver::Compile(jobject class_loader, const std::vector<const DexFile*>& dex_files, 2322 ThreadPool& thread_pool, TimingLogger& timings) { 2323 for (size_t i = 0; i != dex_files.size(); ++i) { 2324 const DexFile* dex_file = dex_files[i]; 2325 CHECK(dex_file != NULL); 2326 CompileDexFile(class_loader, *dex_file, thread_pool, timings); 2327 } 2328} 2329 2330void CompilerDriver::CompileClass(const ParallelCompilationManager* manager, size_t class_def_index) { 2331 ATRACE_CALL(); 2332 jobject jclass_loader = manager->GetClassLoader(); 2333 const DexFile& dex_file = *manager->GetDexFile(); 2334 const DexFile::ClassDef& class_def = dex_file.GetClassDef(class_def_index); 2335 ClassLinker* class_linker = manager->GetClassLinker(); 2336 if (SkipClass(class_linker, jclass_loader, dex_file, class_def)) { 2337 return; 2338 } 2339 ClassReference ref(&dex_file, class_def_index); 2340 // Skip compiling classes with generic verifier failures since they will still fail at runtime 2341 if (manager->GetCompiler()->verification_results_->IsClassRejected(ref)) { 2342 return; 2343 } 2344 const byte* class_data = dex_file.GetClassData(class_def); 2345 if (class_data == NULL) { 2346 // empty class, probably a marker interface 2347 return; 2348 } 2349 2350 // Can we run DEX-to-DEX compiler on this class ? 2351 DexToDexCompilationLevel dex_to_dex_compilation_level = kDontDexToDexCompile; 2352 { 2353 ScopedObjectAccess soa(Thread::Current()); 2354 SirtRef<mirror::ClassLoader> class_loader(soa.Self(), 2355 soa.Decode<mirror::ClassLoader*>(jclass_loader)); 2356 dex_to_dex_compilation_level = GetDexToDexCompilationlevel(class_loader, dex_file, class_def); 2357 } 2358 ClassDataItemIterator it(dex_file, class_data); 2359 // Skip fields 2360 while (it.HasNextStaticField()) { 2361 it.Next(); 2362 } 2363 while (it.HasNextInstanceField()) { 2364 it.Next(); 2365 } 2366 CompilerDriver* driver = manager->GetCompiler(); 2367 // Compile direct methods 2368 int64_t previous_direct_method_idx = -1; 2369 while (it.HasNextDirectMethod()) { 2370 uint32_t method_idx = it.GetMemberIndex(); 2371 if (method_idx == previous_direct_method_idx) { 2372 // smali can create dex files with two encoded_methods sharing the same method_idx 2373 // http://code.google.com/p/smali/issues/detail?id=119 2374 it.Next(); 2375 continue; 2376 } 2377 previous_direct_method_idx = method_idx; 2378 driver->CompileMethod(it.GetMethodCodeItem(), it.GetMemberAccessFlags(), 2379 it.GetMethodInvokeType(class_def), class_def_index, 2380 method_idx, jclass_loader, dex_file, dex_to_dex_compilation_level); 2381 it.Next(); 2382 } 2383 // Compile virtual methods 2384 int64_t previous_virtual_method_idx = -1; 2385 while (it.HasNextVirtualMethod()) { 2386 uint32_t method_idx = it.GetMemberIndex(); 2387 if (method_idx == previous_virtual_method_idx) { 2388 // smali can create dex files with two encoded_methods sharing the same method_idx 2389 // http://code.google.com/p/smali/issues/detail?id=119 2390 it.Next(); 2391 continue; 2392 } 2393 previous_virtual_method_idx = method_idx; 2394 driver->CompileMethod(it.GetMethodCodeItem(), it.GetMemberAccessFlags(), 2395 it.GetMethodInvokeType(class_def), class_def_index, 2396 method_idx, jclass_loader, dex_file, dex_to_dex_compilation_level); 2397 it.Next(); 2398 } 2399 DCHECK(!it.HasNext()); 2400} 2401 2402void CompilerDriver::CompileDexFile(jobject class_loader, const DexFile& dex_file, 2403 ThreadPool& thread_pool, TimingLogger& timings) { 2404 timings.NewSplit("Compile Dex File"); 2405 ParallelCompilationManager context(Runtime::Current()->GetClassLinker(), class_loader, this, 2406 &dex_file, thread_pool); 2407 context.ForAll(0, dex_file.NumClassDefs(), CompilerDriver::CompileClass, thread_count_); 2408} 2409 2410void CompilerDriver::CompileMethod(const DexFile::CodeItem* code_item, uint32_t access_flags, 2411 InvokeType invoke_type, uint16_t class_def_idx, 2412 uint32_t method_idx, jobject class_loader, 2413 const DexFile& dex_file, 2414 DexToDexCompilationLevel dex_to_dex_compilation_level) { 2415 CompiledMethod* compiled_method = NULL; 2416 uint64_t start_ns = NanoTime(); 2417 2418 if ((access_flags & kAccNative) != 0) { 2419 compiled_method = (*jni_compiler_)(*this, access_flags, method_idx, dex_file); 2420 CHECK(compiled_method != NULL); 2421 } else if ((access_flags & kAccAbstract) != 0) { 2422 } else { 2423 MethodReference method_ref(&dex_file, method_idx); 2424 bool compile = VerificationResults::IsCandidateForCompilation(method_ref, access_flags); 2425 2426 if (compile) { 2427 CompilerFn compiler = compiler_; 2428#ifdef ART_SEA_IR_MODE 2429 bool use_sea = Runtime::Current()->IsSeaIRMode(); 2430 use_sea = use_sea && 2431 (std::string::npos != PrettyMethod(method_idx, dex_file).find("fibonacci")); 2432 if (use_sea) { 2433 compiler = sea_ir_compiler_; 2434 LOG(INFO) << "Using SEA IR to compile..." << std::endl; 2435 } 2436#endif 2437 // NOTE: if compiler declines to compile this method, it will return NULL. 2438 compiled_method = (*compiler)(*this, code_item, access_flags, invoke_type, class_def_idx, 2439 method_idx, class_loader, dex_file); 2440 } else if (dex_to_dex_compilation_level != kDontDexToDexCompile) { 2441 // TODO: add a mode to disable DEX-to-DEX compilation ? 2442 (*dex_to_dex_compiler_)(*this, code_item, access_flags, 2443 invoke_type, class_def_idx, 2444 method_idx, class_loader, dex_file, 2445 dex_to_dex_compilation_level); 2446 } 2447 } 2448 uint64_t duration_ns = NanoTime() - start_ns; 2449#ifdef ART_USE_PORTABLE_COMPILER 2450 const uint64_t kWarnMilliSeconds = 1000; 2451#else 2452 const uint64_t kWarnMilliSeconds = 100; 2453#endif 2454 if (duration_ns > MsToNs(kWarnMilliSeconds)) { 2455 LOG(WARNING) << "Compilation of " << PrettyMethod(method_idx, dex_file) 2456 << " took " << PrettyDuration(duration_ns); 2457 } 2458 2459 Thread* self = Thread::Current(); 2460 if (compiled_method != NULL) { 2461 MethodReference ref(&dex_file, method_idx); 2462 DCHECK(GetCompiledMethod(ref) == NULL) << PrettyMethod(method_idx, dex_file); 2463 { 2464 MutexLock mu(self, compiled_methods_lock_); 2465 compiled_methods_.Put(ref, compiled_method); 2466 } 2467 DCHECK(GetCompiledMethod(ref) != NULL) << PrettyMethod(method_idx, dex_file); 2468 } 2469 2470 if (self->IsExceptionPending()) { 2471 ScopedObjectAccess soa(self); 2472 LOG(FATAL) << "Unexpected exception compiling: " << PrettyMethod(method_idx, dex_file) << "\n" 2473 << self->GetException(NULL)->Dump(); 2474 } 2475} 2476 2477CompiledClass* CompilerDriver::GetCompiledClass(ClassReference ref) const { 2478 MutexLock mu(Thread::Current(), compiled_classes_lock_); 2479 ClassTable::const_iterator it = compiled_classes_.find(ref); 2480 if (it == compiled_classes_.end()) { 2481 return NULL; 2482 } 2483 CHECK(it->second != NULL); 2484 return it->second; 2485} 2486 2487void CompilerDriver::RecordClassStatus(ClassReference ref, mirror::Class::Status status) { 2488 MutexLock mu(Thread::Current(), compiled_classes_lock_); 2489 auto it = compiled_classes_.find(ref); 2490 if (it == compiled_classes_.end() || it->second->GetStatus() != status) { 2491 // An entry doesn't exist or the status is lower than the new status. 2492 if (it != compiled_classes_.end()) { 2493 CHECK_GT(status, it->second->GetStatus()); 2494 delete it->second; 2495 } 2496 switch (status) { 2497 case mirror::Class::kStatusNotReady: 2498 case mirror::Class::kStatusError: 2499 case mirror::Class::kStatusRetryVerificationAtRuntime: 2500 case mirror::Class::kStatusVerified: 2501 case mirror::Class::kStatusInitialized: 2502 break; // Expected states. 2503 default: 2504 LOG(FATAL) << "Unexpected class status for class " 2505 << PrettyDescriptor(ref.first->GetClassDescriptor(ref.first->GetClassDef(ref.second))) 2506 << " of " << status; 2507 } 2508 CompiledClass* compiled_class = new CompiledClass(status); 2509 compiled_classes_.Overwrite(ref, compiled_class); 2510 } 2511} 2512 2513CompiledMethod* CompilerDriver::GetCompiledMethod(MethodReference ref) const { 2514 MutexLock mu(Thread::Current(), compiled_methods_lock_); 2515 MethodTable::const_iterator it = compiled_methods_.find(ref); 2516 if (it == compiled_methods_.end()) { 2517 return NULL; 2518 } 2519 CHECK(it->second != NULL); 2520 return it->second; 2521} 2522 2523void CompilerDriver::SetBitcodeFileName(std::string const& filename) { 2524 typedef void (*SetBitcodeFileNameFn)(CompilerDriver&, std::string const&); 2525 2526 SetBitcodeFileNameFn set_bitcode_file_name = 2527 reinterpret_cast<SetBitcodeFileNameFn>(compilerLLVMSetBitcodeFileName); 2528 2529 set_bitcode_file_name(*this, filename); 2530} 2531 2532 2533void CompilerDriver::AddRequiresConstructorBarrier(Thread* self, const DexFile* dex_file, 2534 uint16_t class_def_index) { 2535 WriterMutexLock mu(self, freezing_constructor_lock_); 2536 freezing_constructor_classes_.insert(ClassReference(dex_file, class_def_index)); 2537} 2538 2539bool CompilerDriver::RequiresConstructorBarrier(Thread* self, const DexFile* dex_file, 2540 uint16_t class_def_index) { 2541 ReaderMutexLock mu(self, freezing_constructor_lock_); 2542 return freezing_constructor_classes_.count(ClassReference(dex_file, class_def_index)) != 0; 2543} 2544 2545bool CompilerDriver::WriteElf(const std::string& android_root, 2546 bool is_host, 2547 const std::vector<const art::DexFile*>& dex_files, 2548 OatWriter& oat_writer, 2549 art::File* file) 2550 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { 2551#if defined(ART_USE_PORTABLE_COMPILER) 2552 return art::ElfWriterMclinker::Create(file, oat_writer, dex_files, android_root, is_host, *this); 2553#else 2554 return art::ElfWriterQuick::Create(file, oat_writer, dex_files, android_root, is_host, *this); 2555#endif 2556} 2557void CompilerDriver::InstructionSetToLLVMTarget(InstructionSet instruction_set, 2558 std::string& target_triple, 2559 std::string& target_cpu, 2560 std::string& target_attr) { 2561 switch (instruction_set) { 2562 case kThumb2: 2563 target_triple = "thumb-none-linux-gnueabi"; 2564 target_cpu = "cortex-a9"; 2565 target_attr = "+thumb2,+neon,+neonfp,+vfp3,+db"; 2566 break; 2567 2568 case kArm: 2569 target_triple = "armv7-none-linux-gnueabi"; 2570 // TODO: Fix for Nexus S. 2571 target_cpu = "cortex-a9"; 2572 // TODO: Fix for Xoom. 2573 target_attr = "+v7,+neon,+neonfp,+vfp3,+db"; 2574 break; 2575 2576 case kX86: 2577 target_triple = "i386-pc-linux-gnu"; 2578 target_attr = ""; 2579 break; 2580 2581 case kMips: 2582 target_triple = "mipsel-unknown-linux"; 2583 target_attr = "mips32r2"; 2584 break; 2585 2586 default: 2587 LOG(FATAL) << "Unknown instruction set: " << instruction_set; 2588 } 2589 } 2590} // namespace art 2591