compiler_driver.h revision 19a19cffd197a28ae4c9c3e59eff6352fd392241
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#ifndef ART_COMPILER_DRIVER_COMPILER_DRIVER_H_ 18#define ART_COMPILER_DRIVER_COMPILER_DRIVER_H_ 19 20#include <set> 21#include <string> 22#include <vector> 23 24#include "base/mutex.h" 25#include "base/timing_logger.h" 26#include "class_reference.h" 27#include "compiled_method.h" 28#include "compiler.h" 29#include "dex_file.h" 30#include "driver/compiler_options.h" 31#include "instruction_set.h" 32#include "invoke_type.h" 33#include "method_reference.h" 34#include "mirror/class.h" // For mirror::Class::Status. 35#include "os.h" 36#include "profiler.h" 37#include "runtime.h" 38#include "safe_map.h" 39#include "thread_pool.h" 40#include "utils/arena_allocator.h" 41#include "utils/dedupe_set.h" 42 43namespace art { 44 45namespace verifier { 46class MethodVerifier; 47} // namespace verifier 48 49class CompiledClass; 50class CompilerOptions; 51class DexCompilationUnit; 52class DexFileToMethodInlinerMap; 53struct InlineIGetIPutData; 54class OatWriter; 55class ParallelCompilationManager; 56class ScopedObjectAccess; 57template<class T> class Handle; 58class TimingLogger; 59class VerificationResults; 60class VerifiedMethod; 61 62enum EntryPointCallingConvention { 63 // ABI of invocations to a method's interpreter entry point. 64 kInterpreterAbi, 65 // ABI of calls to a method's native code, only used for native methods. 66 kJniAbi, 67 // ABI of calls to a method's portable code entry point. 68 kPortableAbi, 69 // ABI of calls to a method's quick code entry point. 70 kQuickAbi 71}; 72 73enum DexToDexCompilationLevel { 74 kDontDexToDexCompile, // Only meaning wrt image time interpretation. 75 kRequired, // Dex-to-dex compilation required for correctness. 76 kOptimize // Perform required transformation and peep-hole optimizations. 77}; 78 79class CompilerDriver { 80 public: 81 // Create a compiler targeting the requested "instruction_set". 82 // "image" should be true if image specific optimizations should be 83 // enabled. "image_classes" lets the compiler know what classes it 84 // can assume will be in the image, with nullptr implying all available 85 // classes. 86 explicit CompilerDriver(const CompilerOptions* compiler_options, 87 VerificationResults* verification_results, 88 DexFileToMethodInlinerMap* method_inliner_map, 89 Compiler::Kind compiler_kind, 90 InstructionSet instruction_set, 91 const InstructionSetFeatures* instruction_set_features, 92 bool image, std::set<std::string>* image_classes, 93 size_t thread_count, bool dump_stats, bool dump_passes, 94 CumulativeLogger* timer, const std::string& profile_file); 95 96 ~CompilerDriver(); 97 98 void CompileAll(jobject class_loader, const std::vector<const DexFile*>& dex_files, 99 TimingLogger* timings) 100 LOCKS_EXCLUDED(Locks::mutator_lock_); 101 102 // Compile a single Method. 103 void CompileOne(mirror::ArtMethod* method, TimingLogger* timings) 104 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 105 106 VerificationResults* GetVerificationResults() const { 107 return verification_results_; 108 } 109 110 DexFileToMethodInlinerMap* GetMethodInlinerMap() const { 111 return method_inliner_map_; 112 } 113 114 InstructionSet GetInstructionSet() const { 115 return instruction_set_; 116 } 117 118 const InstructionSetFeatures* GetInstructionSetFeatures() const { 119 return instruction_set_features_; 120 } 121 122 const CompilerOptions& GetCompilerOptions() const { 123 return *compiler_options_; 124 } 125 126 Compiler* GetCompiler() const { 127 return compiler_.get(); 128 } 129 130 bool ProfilePresent() const { 131 return profile_present_; 132 } 133 134 // Are we compiling and creating an image file? 135 bool IsImage() const { 136 return image_; 137 } 138 139 const std::set<std::string>* GetImageClasses() const { 140 return image_classes_.get(); 141 } 142 143 CompilerTls* GetTls(); 144 145 // Generate the trampolines that are invoked by unresolved direct methods. 146 const std::vector<uint8_t>* CreateInterpreterToInterpreterBridge() const 147 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 148 const std::vector<uint8_t>* CreateInterpreterToCompiledCodeBridge() const 149 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 150 const std::vector<uint8_t>* CreateJniDlsymLookup() const 151 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 152 const std::vector<uint8_t>* CreatePortableImtConflictTrampoline() const 153 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 154 const std::vector<uint8_t>* CreatePortableResolutionTrampoline() const 155 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 156 const std::vector<uint8_t>* CreatePortableToInterpreterBridge() const 157 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 158 const std::vector<uint8_t>* CreateQuickGenericJniTrampoline() const 159 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 160 const std::vector<uint8_t>* CreateQuickImtConflictTrampoline() const 161 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 162 const std::vector<uint8_t>* CreateQuickResolutionTrampoline() const 163 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 164 const std::vector<uint8_t>* CreateQuickToInterpreterBridge() const 165 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 166 167 CompiledClass* GetCompiledClass(ClassReference ref) const 168 LOCKS_EXCLUDED(compiled_classes_lock_); 169 170 CompiledMethod* GetCompiledMethod(MethodReference ref) const 171 LOCKS_EXCLUDED(compiled_methods_lock_); 172 size_t GetNonRelativeLinkerPatchCount() const 173 LOCKS_EXCLUDED(compiled_methods_lock_); 174 175 void AddRequiresConstructorBarrier(Thread* self, const DexFile* dex_file, 176 uint16_t class_def_index); 177 bool RequiresConstructorBarrier(Thread* self, const DexFile* dex_file, uint16_t class_def_index); 178 179 // Callbacks from compiler to see what runtime checks must be generated. 180 181 bool CanAssumeTypeIsPresentInDexCache(const DexFile& dex_file, uint32_t type_idx); 182 183 bool CanAssumeStringIsPresentInDexCache(const DexFile& dex_file, uint32_t string_idx) 184 LOCKS_EXCLUDED(Locks::mutator_lock_); 185 186 // Are runtime access checks necessary in the compiled code? 187 bool CanAccessTypeWithoutChecks(uint32_t referrer_idx, const DexFile& dex_file, 188 uint32_t type_idx, bool* type_known_final = nullptr, 189 bool* type_known_abstract = nullptr, 190 bool* equals_referrers_class = nullptr) 191 LOCKS_EXCLUDED(Locks::mutator_lock_); 192 193 // Are runtime access and instantiable checks necessary in the code? 194 bool CanAccessInstantiableTypeWithoutChecks(uint32_t referrer_idx, const DexFile& dex_file, 195 uint32_t type_idx) 196 LOCKS_EXCLUDED(Locks::mutator_lock_); 197 198 bool CanEmbedTypeInCode(const DexFile& dex_file, uint32_t type_idx, 199 bool* is_type_initialized, bool* use_direct_type_ptr, 200 uintptr_t* direct_type_ptr, bool* out_is_finalizable); 201 202 // Query methods for the java.lang.ref.Reference class. 203 bool CanEmbedReferenceTypeInCode(ClassReference* ref, 204 bool* use_direct_type_ptr, uintptr_t* direct_type_ptr); 205 uint32_t GetReferenceSlowFlagOffset() const; 206 uint32_t GetReferenceDisableFlagOffset() const; 207 208 // Get the DexCache for the 209 mirror::DexCache* GetDexCache(const DexCompilationUnit* mUnit) 210 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 211 212 mirror::ClassLoader* GetClassLoader(ScopedObjectAccess& soa, const DexCompilationUnit* mUnit) 213 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 214 215 // Resolve compiling method's class. Returns nullptr on failure. 216 mirror::Class* ResolveCompilingMethodsClass( 217 const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 218 Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit) 219 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 220 221 // Resolve a field. Returns nullptr on failure, including incompatible class change. 222 // NOTE: Unlike ClassLinker's ResolveField(), this method enforces is_static. 223 mirror::ArtField* ResolveField( 224 const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 225 Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 226 uint32_t field_idx, bool is_static) 227 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 228 229 // Get declaration location of a resolved field. 230 void GetResolvedFieldDexFileLocation( 231 mirror::ArtField* resolved_field, const DexFile** declaring_dex_file, 232 uint16_t* declaring_class_idx, uint16_t* declaring_field_idx) 233 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 234 235 bool IsFieldVolatile(mirror::ArtField* field) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 236 MemberOffset GetFieldOffset(mirror::ArtField* field) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 237 238 // Can we fast-path an IGET/IPUT access to an instance field? If yes, compute the field offset. 239 std::pair<bool, bool> IsFastInstanceField( 240 mirror::DexCache* dex_cache, mirror::Class* referrer_class, 241 mirror::ArtField* resolved_field, uint16_t field_idx) 242 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 243 244 // Can we fast-path an SGET/SPUT access to a static field? If yes, compute the type index 245 // of the declaring class in the referrer's dex file. 246 std::pair<bool, bool> IsFastStaticField( 247 mirror::DexCache* dex_cache, mirror::Class* referrer_class, 248 mirror::ArtField* resolved_field, uint16_t field_idx, uint32_t* storage_index) 249 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 250 251 // Is static field's in referrer's class? 252 bool IsStaticFieldInReferrerClass(mirror::Class* referrer_class, mirror::ArtField* resolved_field) 253 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 254 255 // Is static field's class initialized? 256 bool IsStaticFieldsClassInitialized(mirror::Class* referrer_class, 257 mirror::ArtField* resolved_field) 258 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 259 260 // Resolve a method. Returns nullptr on failure, including incompatible class change. 261 mirror::ArtMethod* ResolveMethod( 262 ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 263 Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 264 uint32_t method_idx, InvokeType invoke_type) 265 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 266 267 // Get declaration location of a resolved field. 268 void GetResolvedMethodDexFileLocation( 269 mirror::ArtMethod* resolved_method, const DexFile** declaring_dex_file, 270 uint16_t* declaring_class_idx, uint16_t* declaring_method_idx) 271 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 272 273 // Get the index in the vtable of the method. 274 uint16_t GetResolvedMethodVTableIndex( 275 mirror::ArtMethod* resolved_method, InvokeType type) 276 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 277 278 // Can we fast-path an INVOKE? If no, returns 0. If yes, returns a non-zero opaque flags value 279 // for ProcessedInvoke() and computes the necessary lowering info. 280 int IsFastInvoke( 281 ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 282 Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 283 mirror::Class* referrer_class, mirror::ArtMethod* resolved_method, InvokeType* invoke_type, 284 MethodReference* target_method, const MethodReference* devirt_target, 285 uintptr_t* direct_code, uintptr_t* direct_method) 286 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 287 288 // Is method's class initialized for an invoke? 289 // For static invokes to determine whether we need to consider potential call to <clinit>(). 290 // For non-static invokes, assuming a non-null reference, the class is always initialized. 291 bool IsMethodsClassInitialized(mirror::Class* referrer_class, mirror::ArtMethod* resolved_method) 292 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 293 294 void ProcessedInstanceField(bool resolved); 295 void ProcessedStaticField(bool resolved, bool local); 296 void ProcessedInvoke(InvokeType invoke_type, int flags); 297 298 // Can we fast path instance field access? Computes field's offset and volatility. 299 bool ComputeInstanceFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, bool is_put, 300 MemberOffset* field_offset, bool* is_volatile) 301 LOCKS_EXCLUDED(Locks::mutator_lock_); 302 303 mirror::ArtField* ComputeInstanceFieldInfo(uint32_t field_idx, 304 const DexCompilationUnit* mUnit, 305 bool is_put, 306 const ScopedObjectAccess& soa) 307 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 308 309 310 // Can we fastpath static field access? Computes field's offset, volatility and whether the 311 // field is within the referrer (which can avoid checking class initialization). 312 bool ComputeStaticFieldInfo(uint32_t field_idx, const DexCompilationUnit* mUnit, bool is_put, 313 MemberOffset* field_offset, uint32_t* storage_index, 314 bool* is_referrers_class, bool* is_volatile, bool* is_initialized, 315 Primitive::Type* type) 316 LOCKS_EXCLUDED(Locks::mutator_lock_); 317 318 // Can we fastpath a interface, super class or virtual method call? Computes method's vtable 319 // index. 320 bool ComputeInvokeInfo(const DexCompilationUnit* mUnit, const uint32_t dex_pc, 321 bool update_stats, bool enable_devirtualization, 322 InvokeType* type, MethodReference* target_method, int* vtable_idx, 323 uintptr_t* direct_code, uintptr_t* direct_method) 324 LOCKS_EXCLUDED(Locks::mutator_lock_); 325 326 const VerifiedMethod* GetVerifiedMethod(const DexFile* dex_file, uint32_t method_idx) const; 327 bool IsSafeCast(const DexCompilationUnit* mUnit, uint32_t dex_pc); 328 329 bool GetSupportBootImageFixup() const { 330 return support_boot_image_fixup_; 331 } 332 333 void SetSupportBootImageFixup(bool support_boot_image_fixup) { 334 support_boot_image_fixup_ = support_boot_image_fixup; 335 } 336 337 ArenaPool* GetArenaPool() { 338 return &arena_pool_; 339 } 340 341 bool WriteElf(const std::string& android_root, 342 bool is_host, 343 const std::vector<const DexFile*>& dex_files, 344 OatWriter* oat_writer, 345 File* file); 346 347 // TODO: move to a common home for llvm helpers once quick/portable are merged. 348 static void InstructionSetToLLVMTarget(InstructionSet instruction_set, 349 std::string* target_triple, 350 std::string* target_cpu, 351 std::string* target_attr); 352 353 void SetCompilerContext(void* compiler_context) { 354 compiler_context_ = compiler_context; 355 } 356 357 void* GetCompilerContext() const { 358 return compiler_context_; 359 } 360 361 size_t GetThreadCount() const { 362 return thread_count_; 363 } 364 365 bool GetDumpPasses() const { 366 return dump_passes_; 367 } 368 369 CumulativeLogger* GetTimingsLogger() const { 370 return timings_logger_; 371 } 372 373 // Checks if class specified by type_idx is one of the image_classes_ 374 bool IsImageClass(const char* descriptor) const; 375 376 void RecordClassStatus(ClassReference ref, mirror::Class::Status status) 377 LOCKS_EXCLUDED(compiled_classes_lock_); 378 379 std::vector<uint8_t>* DeduplicateCode(const std::vector<uint8_t>& code); 380 SrcMap* DeduplicateSrcMappingTable(const SrcMap& src_map); 381 std::vector<uint8_t>* DeduplicateMappingTable(const std::vector<uint8_t>& code); 382 std::vector<uint8_t>* DeduplicateVMapTable(const std::vector<uint8_t>& code); 383 std::vector<uint8_t>* DeduplicateGCMap(const std::vector<uint8_t>& code); 384 std::vector<uint8_t>* DeduplicateCFIInfo(const std::vector<uint8_t>* cfi_info); 385 386 ProfileFile profile_file_; 387 bool profile_present_; 388 389 // Should the compiler run on this method given profile information? 390 bool SkipCompilation(const std::string& method_name); 391 392 private: 393 // These flags are internal to CompilerDriver for collecting INVOKE resolution statistics. 394 // The only external contract is that unresolved method has flags 0 and resolved non-0. 395 enum { 396 kBitMethodResolved = 0, 397 kBitVirtualMadeDirect, 398 kBitPreciseTypeDevirtualization, 399 kBitDirectCallToBoot, 400 kBitDirectMethodToBoot 401 }; 402 static constexpr int kFlagMethodResolved = 1 << kBitMethodResolved; 403 static constexpr int kFlagVirtualMadeDirect = 1 << kBitVirtualMadeDirect; 404 static constexpr int kFlagPreciseTypeDevirtualization = 1 << kBitPreciseTypeDevirtualization; 405 static constexpr int kFlagDirectCallToBoot = 1 << kBitDirectCallToBoot; 406 static constexpr int kFlagDirectMethodToBoot = 1 << kBitDirectMethodToBoot; 407 static constexpr int kFlagsMethodResolvedVirtualMadeDirect = 408 kFlagMethodResolved | kFlagVirtualMadeDirect; 409 static constexpr int kFlagsMethodResolvedPreciseTypeDevirtualization = 410 kFlagsMethodResolvedVirtualMadeDirect | kFlagPreciseTypeDevirtualization; 411 412 public: // TODO make private or eliminate. 413 // Compute constant code and method pointers when possible. 414 void GetCodeAndMethodForDirectCall(/*out*/InvokeType* type, 415 InvokeType sharp_type, 416 bool no_guarantee_of_dex_cache_entry, 417 const mirror::Class* referrer_class, 418 mirror::ArtMethod* method, 419 /*out*/int* stats_flags, 420 MethodReference* target_method, 421 uintptr_t* direct_code, uintptr_t* direct_method) 422 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 423 424 private: 425 void PreCompile(jobject class_loader, const std::vector<const DexFile*>& dex_files, 426 ThreadPool* thread_pool, TimingLogger* timings) 427 LOCKS_EXCLUDED(Locks::mutator_lock_); 428 429 void LoadImageClasses(TimingLogger* timings); 430 431 // Attempt to resolve all type, methods, fields, and strings 432 // referenced from code in the dex file following PathClassLoader 433 // ordering semantics. 434 void Resolve(jobject class_loader, const std::vector<const DexFile*>& dex_files, 435 ThreadPool* thread_pool, TimingLogger* timings) 436 LOCKS_EXCLUDED(Locks::mutator_lock_); 437 void ResolveDexFile(jobject class_loader, const DexFile& dex_file, 438 const std::vector<const DexFile*>& dex_files, 439 ThreadPool* thread_pool, TimingLogger* timings) 440 LOCKS_EXCLUDED(Locks::mutator_lock_); 441 442 void Verify(jobject class_loader, const std::vector<const DexFile*>& dex_files, 443 ThreadPool* thread_pool, TimingLogger* timings); 444 void VerifyDexFile(jobject class_loader, const DexFile& dex_file, 445 const std::vector<const DexFile*>& dex_files, 446 ThreadPool* thread_pool, TimingLogger* timings) 447 LOCKS_EXCLUDED(Locks::mutator_lock_); 448 449 void SetVerified(jobject class_loader, const std::vector<const DexFile*>& dex_files, 450 ThreadPool* thread_pool, TimingLogger* timings); 451 void SetVerifiedDexFile(jobject class_loader, const DexFile& dex_file, 452 const std::vector<const DexFile*>& dex_files, 453 ThreadPool* thread_pool, TimingLogger* timings) 454 LOCKS_EXCLUDED(Locks::mutator_lock_); 455 456 void InitializeClasses(jobject class_loader, const std::vector<const DexFile*>& dex_files, 457 ThreadPool* thread_pool, TimingLogger* timings) 458 LOCKS_EXCLUDED(Locks::mutator_lock_); 459 void InitializeClasses(jobject class_loader, const DexFile& dex_file, 460 const std::vector<const DexFile*>& dex_files, 461 ThreadPool* thread_pool, TimingLogger* timings) 462 LOCKS_EXCLUDED(Locks::mutator_lock_, compiled_classes_lock_); 463 464 void UpdateImageClasses(TimingLogger* timings) LOCKS_EXCLUDED(Locks::mutator_lock_); 465 static void FindClinitImageClassesCallback(mirror::Object* object, void* arg) 466 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); 467 468 void Compile(jobject class_loader, const std::vector<const DexFile*>& dex_files, 469 ThreadPool* thread_pool, TimingLogger* timings); 470 void CompileDexFile(jobject class_loader, const DexFile& dex_file, 471 const std::vector<const DexFile*>& dex_files, 472 ThreadPool* thread_pool, TimingLogger* timings) 473 LOCKS_EXCLUDED(Locks::mutator_lock_); 474 void CompileMethod(const DexFile::CodeItem* code_item, uint32_t access_flags, 475 InvokeType invoke_type, uint16_t class_def_idx, uint32_t method_idx, 476 jobject class_loader, const DexFile& dex_file, 477 DexToDexCompilationLevel dex_to_dex_compilation_level) 478 LOCKS_EXCLUDED(compiled_methods_lock_); 479 480 static void CompileClass(const ParallelCompilationManager* context, size_t class_def_index) 481 LOCKS_EXCLUDED(Locks::mutator_lock_); 482 483 const CompilerOptions* const compiler_options_; 484 VerificationResults* const verification_results_; 485 DexFileToMethodInlinerMap* const method_inliner_map_; 486 487 std::unique_ptr<Compiler> compiler_; 488 489 const InstructionSet instruction_set_; 490 const InstructionSetFeatures* const instruction_set_features_; 491 492 // All class references that require 493 mutable ReaderWriterMutex freezing_constructor_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 494 std::set<ClassReference> freezing_constructor_classes_ GUARDED_BY(freezing_constructor_lock_); 495 496 typedef SafeMap<const ClassReference, CompiledClass*> ClassTable; 497 // All class references that this compiler has compiled. 498 mutable Mutex compiled_classes_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 499 ClassTable compiled_classes_ GUARDED_BY(compiled_classes_lock_); 500 501 typedef SafeMap<const MethodReference, CompiledMethod*, MethodReferenceComparator> MethodTable; 502 // All method references that this compiler has compiled. 503 mutable Mutex compiled_methods_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; 504 MethodTable compiled_methods_ GUARDED_BY(compiled_methods_lock_); 505 // Number of non-relative patches in all compiled methods. These patches need space 506 // in the .oat_patches ELF section if requested in the compiler options. 507 size_t non_relative_linker_patch_count_ GUARDED_BY(compiled_methods_lock_); 508 509 const bool image_; 510 511 // If image_ is true, specifies the classes that will be included in 512 // the image. Note if image_classes_ is nullptr, all classes are 513 // included in the image. 514 std::unique_ptr<std::set<std::string>> image_classes_; 515 516 size_t thread_count_; 517 518 class AOTCompilationStats; 519 std::unique_ptr<AOTCompilationStats> stats_; 520 521 bool dump_stats_; 522 const bool dump_passes_; 523 524 CumulativeLogger* const timings_logger_; 525 526 typedef void (*CompilerCallbackFn)(CompilerDriver& driver); 527 typedef MutexLock* (*CompilerMutexLockFn)(CompilerDriver& driver); 528 529 typedef void (*DexToDexCompilerFn)(CompilerDriver& driver, 530 const DexFile::CodeItem* code_item, 531 uint32_t access_flags, InvokeType invoke_type, 532 uint32_t class_dex_idx, uint32_t method_idx, 533 jobject class_loader, const DexFile& dex_file, 534 DexToDexCompilationLevel dex_to_dex_compilation_level); 535 DexToDexCompilerFn dex_to_dex_compiler_; 536 537 void* compiler_context_; 538 539 pthread_key_t tls_key_; 540 541 // Arena pool used by the compiler. 542 ArenaPool arena_pool_; 543 544 bool support_boot_image_fixup_; 545 546 // DeDuplication data structures, these own the corresponding byte arrays. 547 template <typename ByteArray> 548 class DedupeHashFunc { 549 public: 550 size_t operator()(const ByteArray& array) const { 551 // For small arrays compute a hash using every byte. 552 static const size_t kSmallArrayThreshold = 16; 553 size_t hash = 0x811c9dc5; 554 if (array.size() <= kSmallArrayThreshold) { 555 for (auto b : array) { 556 hash = (hash * 16777619) ^ static_cast<uint8_t>(b); 557 } 558 } else { 559 // For larger arrays use the 2 bytes at 6 bytes (the location of a push registers 560 // instruction field for quick generated code on ARM) and then select a number of other 561 // values at random. 562 static const size_t kRandomHashCount = 16; 563 for (size_t i = 0; i < 2; ++i) { 564 uint8_t b = static_cast<uint8_t>(array[i + 6]); 565 hash = (hash * 16777619) ^ b; 566 } 567 for (size_t i = 2; i < kRandomHashCount; ++i) { 568 size_t r = i * 1103515245 + 12345; 569 uint8_t b = static_cast<uint8_t>(array[r % array.size()]); 570 hash = (hash * 16777619) ^ b; 571 } 572 } 573 hash += hash << 13; 574 hash ^= hash >> 7; 575 hash += hash << 3; 576 hash ^= hash >> 17; 577 hash += hash << 5; 578 return hash; 579 } 580 }; 581 582 DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc<std::vector<uint8_t>>, 4> dedupe_code_; 583 DedupeSet<SrcMap, size_t, DedupeHashFunc<SrcMap>, 4> dedupe_src_mapping_table_; 584 DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc<std::vector<uint8_t>>, 4> dedupe_mapping_table_; 585 DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc<std::vector<uint8_t>>, 4> dedupe_vmap_table_; 586 DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc<std::vector<uint8_t>>, 4> dedupe_gc_map_; 587 DedupeSet<std::vector<uint8_t>, size_t, DedupeHashFunc<std::vector<uint8_t>>, 4> dedupe_cfi_info_; 588 589 DISALLOW_COPY_AND_ASSIGN(CompilerDriver); 590}; 591 592} // namespace art 593 594#endif // ART_COMPILER_DRIVER_COMPILER_DRIVER_H_ 595