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 
SetOffset(MemberOffset num_bytes)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 
ProxyFindSystemClass(const char * descriptor)46 ObjPtr<mirror::Class> ArtField::ProxyFindSystemClass(const char* descriptor) {
47   DCHECK(GetDeclaringClass()->IsProxyClass());
48   return Runtime::Current()->GetClassLinker()->FindSystemClass(Thread::Current(), descriptor);
49 }
50 
ResolveGetStringName(Thread * self,const DexFile & dex_file,dex::StringIndex string_idx,ObjPtr<mirror::DexCache> dex_cache)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 
PrettyField(ArtField * f,bool with_type)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 
PrettyField(bool with_type)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 
GetAccessFlagsDCheck()81 void ArtField::GetAccessFlagsDCheck() {
82   CHECK(GetDeclaringClass()->IsLoaded() || GetDeclaringClass()->IsErroneous());
83 }
84 
GetOffsetDCheck()85 void ArtField::GetOffsetDCheck() {
86   CHECK(GetDeclaringClass()->IsResolved());
87 }
88 
89 }  // namespace art
90