1 /* 2 * Copyright (C) 2012 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_INL_H_ 18 #define ART_COMPILER_DRIVER_COMPILER_DRIVER_INL_H_ 19 20 #include "compiler_driver.h" 21 22 #include "art_field-inl.h" 23 #include "art_method-inl.h" 24 #include "base/enums.h" 25 #include "class_linker-inl.h" 26 #include "dex_compilation_unit.h" 27 #include "mirror/class_loader.h" 28 #include "mirror/dex_cache-inl.h" 29 #include "scoped_thread_state_change-inl.h" 30 #include "handle_scope-inl.h" 31 32 namespace art { 33 34 inline mirror::Class* CompilerDriver::ResolveClass( 35 const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 36 Handle<mirror::ClassLoader> class_loader, dex::TypeIndex cls_index, 37 const DexCompilationUnit* mUnit) { 38 DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile()); 39 DCHECK_EQ(class_loader.Get(), mUnit->GetClassLoader().Get()); 40 mirror::Class* cls = mUnit->GetClassLinker()->ResolveType( 41 *mUnit->GetDexFile(), cls_index, dex_cache, class_loader); 42 DCHECK_EQ(cls == nullptr, soa.Self()->IsExceptionPending()); 43 if (UNLIKELY(cls == nullptr)) { 44 // Clean up any exception left by type resolution. 45 soa.Self()->ClearException(); 46 } 47 return cls; 48 } 49 50 inline mirror::Class* CompilerDriver::ResolveCompilingMethodsClass( 51 const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 52 Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit) { 53 DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile()); 54 DCHECK_EQ(class_loader.Get(), mUnit->GetClassLoader().Get()); 55 const DexFile::MethodId& referrer_method_id = 56 mUnit->GetDexFile()->GetMethodId(mUnit->GetDexMethodIndex()); 57 return ResolveClass(soa, dex_cache, class_loader, referrer_method_id.class_idx_, mUnit); 58 } 59 60 inline ArtField* CompilerDriver::ResolveFieldWithDexFile( 61 const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 62 Handle<mirror::ClassLoader> class_loader, const DexFile* dex_file, 63 uint32_t field_idx, bool is_static) { 64 DCHECK_EQ(dex_cache->GetDexFile(), dex_file); 65 ArtField* resolved_field = Runtime::Current()->GetClassLinker()->ResolveField( 66 *dex_file, field_idx, dex_cache, class_loader, is_static); 67 DCHECK_EQ(resolved_field == nullptr, soa.Self()->IsExceptionPending()); 68 if (UNLIKELY(resolved_field == nullptr)) { 69 // Clean up any exception left by type resolution. 70 soa.Self()->ClearException(); 71 return nullptr; 72 } 73 if (UNLIKELY(resolved_field->IsStatic() != is_static)) { 74 // ClassLinker can return a field of the wrong kind directly from the DexCache. 75 // Silently return null on such incompatible class change. 76 return nullptr; 77 } 78 return resolved_field; 79 } 80 81 inline ArtField* CompilerDriver::ResolveField( 82 const ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 83 Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 84 uint32_t field_idx, bool is_static) { 85 DCHECK_EQ(class_loader.Get(), mUnit->GetClassLoader().Get()); 86 return ResolveFieldWithDexFile(soa, dex_cache, class_loader, mUnit->GetDexFile(), field_idx, 87 is_static); 88 } 89 90 inline std::pair<bool, bool> CompilerDriver::IsFastInstanceField( 91 mirror::DexCache* dex_cache, mirror::Class* referrer_class, 92 ArtField* resolved_field, uint16_t field_idx) { 93 DCHECK(!resolved_field->IsStatic()); 94 ObjPtr<mirror::Class> fields_class = resolved_field->GetDeclaringClass(); 95 bool fast_get = referrer_class != nullptr && 96 referrer_class->CanAccessResolvedField(fields_class, 97 resolved_field, 98 dex_cache, 99 field_idx); 100 bool fast_put = fast_get && (!resolved_field->IsFinal() || fields_class == referrer_class); 101 return std::make_pair(fast_get, fast_put); 102 } 103 104 template <typename ArtMember> 105 inline bool CompilerDriver::CanAccessResolvedMember(mirror::Class* referrer_class ATTRIBUTE_UNUSED, 106 mirror::Class* access_to ATTRIBUTE_UNUSED, 107 ArtMember* member ATTRIBUTE_UNUSED, 108 mirror::DexCache* dex_cache ATTRIBUTE_UNUSED, 109 uint32_t field_idx ATTRIBUTE_UNUSED) { 110 // Not defined for ArtMember values other than ArtField or ArtMethod. 111 UNREACHABLE(); 112 } 113 114 template <> 115 inline bool CompilerDriver::CanAccessResolvedMember<ArtField>(mirror::Class* referrer_class, 116 mirror::Class* access_to, 117 ArtField* field, 118 mirror::DexCache* dex_cache, 119 uint32_t field_idx) { 120 return referrer_class->CanAccessResolvedField(access_to, field, dex_cache, field_idx); 121 } 122 123 template <> 124 inline bool CompilerDriver::CanAccessResolvedMember<ArtMethod>( 125 mirror::Class* referrer_class, 126 mirror::Class* access_to, 127 ArtMethod* method, 128 mirror::DexCache* dex_cache, 129 uint32_t field_idx) { 130 return referrer_class->CanAccessResolvedMethod(access_to, method, dex_cache, field_idx); 131 } 132 133 inline ArtMethod* CompilerDriver::ResolveMethod( 134 ScopedObjectAccess& soa, Handle<mirror::DexCache> dex_cache, 135 Handle<mirror::ClassLoader> class_loader, const DexCompilationUnit* mUnit, 136 uint32_t method_idx, InvokeType invoke_type, bool check_incompatible_class_change) { 137 DCHECK_EQ(class_loader.Get(), mUnit->GetClassLoader().Get()); 138 ArtMethod* resolved_method = 139 check_incompatible_class_change 140 ? mUnit->GetClassLinker()->ResolveMethod<ClassLinker::kForceICCECheck>( 141 *dex_cache->GetDexFile(), method_idx, dex_cache, class_loader, nullptr, invoke_type) 142 : mUnit->GetClassLinker()->ResolveMethod<ClassLinker::kNoICCECheckForCache>( 143 *dex_cache->GetDexFile(), method_idx, dex_cache, class_loader, nullptr, invoke_type); 144 if (UNLIKELY(resolved_method == nullptr)) { 145 DCHECK(soa.Self()->IsExceptionPending()); 146 // Clean up any exception left by type resolution. 147 soa.Self()->ClearException(); 148 } 149 return resolved_method; 150 } 151 152 } // namespace art 153 154 #endif // ART_COMPILER_DRIVER_COMPILER_DRIVER_INL_H_ 155
