Ian Rogers | 22d5e73 | 2014-07-15 22:23:51 -0700 | [diff] [blame] | 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 | |
Ian Rogers | e5877a1 | 2014-07-16 12:06:35 -0700 | [diff] [blame] | 17 | #include "method_helper-inl.h" |
Ian Rogers | 22d5e73 | 2014-07-15 22:23:51 -0700 | [diff] [blame] | 18 | |
| 19 | #include "class_linker.h" |
| 20 | #include "dex_file-inl.h" |
| 21 | #include "handle_scope-inl.h" |
| 22 | #include "mirror/art_method-inl.h" |
| 23 | #include "mirror/dex_cache.h" |
| 24 | #include "runtime.h" |
| 25 | |
| 26 | namespace art { |
| 27 | |
| 28 | mirror::String* MethodHelper::GetNameAsString(Thread* self) { |
| 29 | const DexFile* dex_file = method_->GetDexFile(); |
| 30 | mirror::ArtMethod* method = method_->GetInterfaceMethodIfProxy(); |
| 31 | uint32_t dex_method_idx = method->GetDexMethodIndex(); |
| 32 | const DexFile::MethodId& method_id = dex_file->GetMethodId(dex_method_idx); |
| 33 | StackHandleScope<1> hs(self); |
| 34 | Handle<mirror::DexCache> dex_cache(hs.NewHandle(method->GetDexCache())); |
| 35 | return Runtime::Current()->GetClassLinker()->ResolveString(*dex_file, method_id.name_idx_, |
| 36 | dex_cache); |
| 37 | } |
| 38 | |
Ian Rogers | e5877a1 | 2014-07-16 12:06:35 -0700 | [diff] [blame] | 39 | bool MethodHelper::HasSameSignatureWithDifferentClassLoaders(MethodHelper* other) { |
| 40 | if (UNLIKELY(GetReturnType() != other->GetReturnType())) { |
| 41 | return false; |
| 42 | } |
| 43 | const DexFile::TypeList* types = method_->GetParameterTypeList(); |
| 44 | const DexFile::TypeList* other_types = other->method_->GetParameterTypeList(); |
| 45 | if (types == nullptr) { |
| 46 | return (other_types == nullptr) || (other_types->Size() == 0); |
| 47 | } else if (UNLIKELY(other_types == nullptr)) { |
| 48 | return types->Size() == 0; |
| 49 | } |
| 50 | uint32_t num_types = types->Size(); |
| 51 | if (UNLIKELY(num_types != other_types->Size())) { |
| 52 | return false; |
| 53 | } |
| 54 | for (uint32_t i = 0; i < num_types; ++i) { |
| 55 | mirror::Class* param_type = GetClassFromTypeIdx(types->GetTypeItem(i).type_idx_); |
| 56 | mirror::Class* other_param_type = |
| 57 | other->GetClassFromTypeIdx(other_types->GetTypeItem(i).type_idx_); |
| 58 | if (UNLIKELY(param_type != other_param_type)) { |
| 59 | return false; |
| 60 | } |
| 61 | } |
| 62 | return true; |
| 63 | } |
| 64 | |
Ian Rogers | 22d5e73 | 2014-07-15 22:23:51 -0700 | [diff] [blame] | 65 | uint32_t MethodHelper::FindDexMethodIndexInOtherDexFile(const DexFile& other_dexfile) |
| 66 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 67 | mirror::ArtMethod* method = GetMethod(); |
| 68 | const DexFile* dexfile = method->GetDexFile(); |
| 69 | if (dexfile == &other_dexfile) { |
| 70 | return method->GetDexMethodIndex(); |
| 71 | } |
| 72 | const DexFile::MethodId& mid = dexfile->GetMethodId(method->GetDexMethodIndex()); |
| 73 | const char* mid_declaring_class_descriptor = dexfile->StringByTypeIdx(mid.class_idx_); |
| 74 | const DexFile::StringId* other_descriptor = |
| 75 | other_dexfile.FindStringId(mid_declaring_class_descriptor); |
| 76 | if (other_descriptor != nullptr) { |
| 77 | const DexFile::TypeId* other_type_id = |
| 78 | other_dexfile.FindTypeId(other_dexfile.GetIndexForStringId(*other_descriptor)); |
| 79 | if (other_type_id != nullptr) { |
| 80 | const char* mid_name = dexfile->GetMethodName(mid); |
| 81 | const DexFile::StringId* other_name = other_dexfile.FindStringId(mid_name); |
| 82 | if (other_name != nullptr) { |
| 83 | uint16_t other_return_type_idx; |
| 84 | std::vector<uint16_t> other_param_type_idxs; |
| 85 | bool success = other_dexfile.CreateTypeList( |
| 86 | dexfile->GetMethodSignature(mid).ToString(), &other_return_type_idx, |
| 87 | &other_param_type_idxs); |
| 88 | if (success) { |
| 89 | const DexFile::ProtoId* other_sig = |
| 90 | other_dexfile.FindProtoId(other_return_type_idx, other_param_type_idxs); |
| 91 | if (other_sig != nullptr) { |
| 92 | const DexFile::MethodId* other_mid = other_dexfile.FindMethodId( |
| 93 | *other_type_id, *other_name, *other_sig); |
| 94 | if (other_mid != nullptr) { |
| 95 | return other_dexfile.GetIndexForMethodId(*other_mid); |
| 96 | } |
| 97 | } |
| 98 | } |
| 99 | } |
| 100 | } |
| 101 | } |
| 102 | return DexFile::kDexNoIndex; |
| 103 | } |
| 104 | |
| 105 | uint32_t MethodHelper::FindDexMethodIndexInOtherDexFile(const DexFile& other_dexfile, |
| 106 | uint32_t name_and_signature_idx) |
| 107 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 108 | mirror::ArtMethod* method = GetMethod(); |
| 109 | const DexFile* dexfile = method->GetDexFile(); |
| 110 | const uint32_t dex_method_idx = method->GetDexMethodIndex(); |
| 111 | const DexFile::MethodId& mid = dexfile->GetMethodId(dex_method_idx); |
| 112 | const DexFile::MethodId& name_and_sig_mid = other_dexfile.GetMethodId(name_and_signature_idx); |
| 113 | DCHECK_STREQ(dexfile->GetMethodName(mid), other_dexfile.GetMethodName(name_and_sig_mid)); |
| 114 | DCHECK_EQ(dexfile->GetMethodSignature(mid), other_dexfile.GetMethodSignature(name_and_sig_mid)); |
| 115 | if (dexfile == &other_dexfile) { |
| 116 | return dex_method_idx; |
| 117 | } |
| 118 | const char* mid_declaring_class_descriptor = dexfile->StringByTypeIdx(mid.class_idx_); |
| 119 | const DexFile::StringId* other_descriptor = |
| 120 | other_dexfile.FindStringId(mid_declaring_class_descriptor); |
| 121 | if (other_descriptor != nullptr) { |
| 122 | const DexFile::TypeId* other_type_id = |
| 123 | other_dexfile.FindTypeId(other_dexfile.GetIndexForStringId(*other_descriptor)); |
| 124 | if (other_type_id != nullptr) { |
| 125 | const DexFile::MethodId* other_mid = other_dexfile.FindMethodId( |
| 126 | *other_type_id, other_dexfile.GetStringId(name_and_sig_mid.name_idx_), |
| 127 | other_dexfile.GetProtoId(name_and_sig_mid.proto_idx_)); |
| 128 | if (other_mid != nullptr) { |
| 129 | return other_dexfile.GetIndexForMethodId(*other_mid); |
| 130 | } |
| 131 | } |
| 132 | } |
| 133 | return DexFile::kDexNoIndex; |
| 134 | } |
| 135 | |
| 136 | } // namespace art |