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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-inl.h"
     28 #include "utils.h"
     29 #include "well_known_classes.h"
     30 
     31 namespace art {
     32 
     33 void ArtField::SetOffset(MemberOffset num_bytes) {
     34   DCHECK(GetDeclaringClass()->IsLoaded() || GetDeclaringClass()->IsErroneous());
     35   if (kIsDebugBuild && Runtime::Current()->IsAotCompiler() &&
     36       Runtime::Current()->IsCompilingBootImage()) {
     37     Primitive::Type type = GetTypeAsPrimitiveType();
     38     if (type == Primitive::kPrimDouble || type == Primitive::kPrimLong) {
     39       DCHECK_ALIGNED(num_bytes.Uint32Value(), 8);
     40     }
     41   }
     42   // Not called within a transaction.
     43   offset_ = num_bytes.Uint32Value();
     44 }
     45 
     46 ObjPtr<mirror::Class> ArtField::ProxyFindSystemClass(const char* descriptor) {
     47   DCHECK(GetDeclaringClass()->IsProxyClass());
     48   return Runtime::Current()->GetClassLinker()->FindSystemClass(Thread::Current(), descriptor);
     49 }
     50 
     51 ObjPtr<mirror::String> ArtField::ResolveGetStringName(Thread* self,
     52                                                       const DexFile& dex_file,
     53                                                       dex::StringIndex string_idx,
     54                                                       ObjPtr<mirror::DexCache> dex_cache) {
     55   StackHandleScope<1> hs(self);
     56   return Runtime::Current()->GetClassLinker()->ResolveString(dex_file,
     57                                                              string_idx,
     58                                                              hs.NewHandle(dex_cache));
     59 }
     60 
     61 std::string ArtField::PrettyField(ArtField* f, bool with_type) {
     62   if (f == nullptr) {
     63     return "null";
     64   }
     65   return f->PrettyField(with_type);
     66 }
     67 
     68 std::string ArtField::PrettyField(bool with_type) {
     69   std::string result;
     70   if (with_type) {
     71     result += PrettyDescriptor(GetTypeDescriptor());
     72     result += ' ';
     73   }
     74   std::string temp;
     75   result += PrettyDescriptor(GetDeclaringClass()->GetDescriptor(&temp));
     76   result += '.';
     77   result += GetName();
     78   return result;
     79 }
     80 
     81 void ArtField::GetAccessFlagsDCheck() {
     82   CHECK(GetDeclaringClass()->IsLoaded() || GetDeclaringClass()->IsErroneous());
     83 }
     84 
     85 void ArtField::GetOffsetDCheck() {
     86   CHECK(GetDeclaringClass()->IsResolved());
     87 }
     88 
     89 }  // namespace art
     90