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      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 "art_field.h"
     18 
     19 #include "art_field-inl.h"
     20 #include "class_linker-inl.h"
     21 #include "gc/accounting/card_table-inl.h"
     22 #include "handle_scope.h"
     23 #include "mirror/class-inl.h"
     24 #include "mirror/object-inl.h"
     25 #include "mirror/object_array-inl.h"
     26 #include "runtime.h"
     27 #include "scoped_thread_state_change.h"
     28 #include "utils.h"
     29 #include "well_known_classes.h"
     30 
     31 namespace art {
     32 
     33 ArtField::ArtField() : access_flags_(0), field_dex_idx_(0), offset_(0) {
     34   declaring_class_ = GcRoot<mirror::Class>(nullptr);
     35 }
     36 
     37 void ArtField::SetOffset(MemberOffset num_bytes) {
     38   DCHECK(GetDeclaringClass()->IsLoaded() || GetDeclaringClass()->IsErroneous());
     39   if (kIsDebugBuild && Runtime::Current()->IsAotCompiler() &&
     40       Runtime::Current()->IsCompilingBootImage()) {
     41     Primitive::Type type = GetTypeAsPrimitiveType();
     42     if (type == Primitive::kPrimDouble || type == Primitive::kPrimLong) {
     43       DCHECK_ALIGNED(num_bytes.Uint32Value(), 8);
     44     }
     45   }
     46   // Not called within a transaction.
     47   offset_ = num_bytes.Uint32Value();
     48 }
     49 
     50 mirror::Class* ArtField::ProxyFindSystemClass(const char* descriptor) {
     51   DCHECK(GetDeclaringClass()->IsProxyClass());
     52   return Runtime::Current()->GetClassLinker()->FindSystemClass(Thread::Current(), descriptor);
     53 }
     54 
     55 mirror::Class* ArtField::ResolveGetType(uint32_t type_idx) {
     56   return Runtime::Current()->GetClassLinker()->ResolveType(type_idx, this);
     57 }
     58 
     59 mirror::String* ArtField::ResolveGetStringName(Thread* self, const DexFile& dex_file,
     60                                                uint32_t string_idx, mirror::DexCache* dex_cache) {
     61   StackHandleScope<1> hs(self);
     62   return Runtime::Current()->GetClassLinker()->ResolveString(
     63       dex_file, string_idx, hs.NewHandle(dex_cache));
     64 }
     65 
     66 }  // namespace art
     67