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_DEX2OAT_DRIVER_COMPILER_DRIVER_INL_H_
18 #define ART_DEX2OAT_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 "driver/dex_compilation_unit.h"
27 #include "handle_scope-inl.h"
28 #include "mirror/class_loader.h"
29 #include "mirror/dex_cache-inl.h"
30 #include "runtime.h"
31 #include "scoped_thread_state_change-inl.h"
32
33 namespace art {
34
ResolveClass(const ScopedObjectAccess & soa,Handle<mirror::DexCache> dex_cache,Handle<mirror::ClassLoader> class_loader,dex::TypeIndex cls_index,const DexCompilationUnit * mUnit)35 inline ObjPtr<mirror::Class> CompilerDriver::ResolveClass(
36 const ScopedObjectAccess& soa,
37 Handle<mirror::DexCache> dex_cache,
38 Handle<mirror::ClassLoader> class_loader,
39 dex::TypeIndex cls_index,
40 const DexCompilationUnit* mUnit) {
41 DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile());
42 DCHECK_EQ(class_loader.Get(), mUnit->GetClassLoader().Get());
43 ObjPtr<mirror::Class> cls =
44 mUnit->GetClassLinker()->ResolveType(cls_index, dex_cache, class_loader);
45 DCHECK_EQ(cls == nullptr, soa.Self()->IsExceptionPending());
46 if (UNLIKELY(cls == nullptr)) {
47 // Clean up any exception left by type resolution.
48 soa.Self()->ClearException();
49 }
50 return cls;
51 }
52
ResolveCompilingMethodsClass(const ScopedObjectAccess & soa,Handle<mirror::DexCache> dex_cache,Handle<mirror::ClassLoader> class_loader,const DexCompilationUnit * mUnit)53 inline ObjPtr<mirror::Class> CompilerDriver::ResolveCompilingMethodsClass(
54 const ScopedObjectAccess& soa,
55 Handle<mirror::DexCache> dex_cache,
56 Handle<mirror::ClassLoader> class_loader,
57 const DexCompilationUnit* mUnit) {
58 DCHECK_EQ(dex_cache->GetDexFile(), mUnit->GetDexFile());
59 DCHECK_EQ(class_loader.Get(), mUnit->GetClassLoader().Get());
60 const dex::MethodId& referrer_method_id =
61 mUnit->GetDexFile()->GetMethodId(mUnit->GetDexMethodIndex());
62 return ResolveClass(soa, dex_cache, class_loader, referrer_method_id.class_idx_, mUnit);
63 }
64
ResolveField(const ScopedObjectAccess & soa,Handle<mirror::DexCache> dex_cache,Handle<mirror::ClassLoader> class_loader,uint32_t field_idx,bool is_static)65 inline ArtField* CompilerDriver::ResolveField(const ScopedObjectAccess& soa,
66 Handle<mirror::DexCache> dex_cache,
67 Handle<mirror::ClassLoader> class_loader,
68 uint32_t field_idx,
69 bool is_static) {
70 ArtField* resolved_field = Runtime::Current()->GetClassLinker()->ResolveField(
71 field_idx, dex_cache, class_loader, is_static);
72 DCHECK_EQ(resolved_field == nullptr, soa.Self()->IsExceptionPending());
73 if (UNLIKELY(resolved_field == nullptr)) {
74 // Clean up any exception left by type resolution.
75 soa.Self()->ClearException();
76 return nullptr;
77 }
78 if (UNLIKELY(resolved_field->IsStatic() != is_static)) {
79 // ClassLinker can return a field of the wrong kind directly from the DexCache.
80 // Silently return null on such incompatible class change.
81 return nullptr;
82 }
83 return resolved_field;
84 }
85
IsFastInstanceField(ObjPtr<mirror::DexCache> dex_cache,ObjPtr<mirror::Class> referrer_class,ArtField * resolved_field,uint16_t field_idx)86 inline std::pair<bool, bool> CompilerDriver::IsFastInstanceField(
87 ObjPtr<mirror::DexCache> dex_cache,
88 ObjPtr<mirror::Class> referrer_class,
89 ArtField* resolved_field,
90 uint16_t field_idx) {
91 DCHECK(!resolved_field->IsStatic());
92 ObjPtr<mirror::Class> fields_class = resolved_field->GetDeclaringClass();
93 bool fast_get = referrer_class != nullptr &&
94 referrer_class->CanAccessResolvedField(fields_class,
95 resolved_field,
96 dex_cache,
97 field_idx);
98 bool fast_put = fast_get && (!resolved_field->IsFinal() || fields_class == referrer_class);
99 return std::make_pair(fast_get, fast_put);
100 }
101
102 } // namespace art
103
104 #endif // ART_DEX2OAT_DRIVER_COMPILER_DRIVER_INL_H_
105