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gerrit-public.fairphone.software / platform / art / 0e4ad9e2d91019ab9a589e31d4f5ca31fcf6de65 / . / runtime / class_root.h
blob: 1ff48457d65981602264af3fea7a3847fcd897b4 [file] [log] [blame]
Vladimir Markob4eb1b12018-05-24 11:09:38 +0100[diff] [blame]1/*
2 * Copyright (C) 2018 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_RUNTIME_CLASS_ROOT_H_
18#define ART_RUNTIME_CLASS_ROOT_H_
19
Andreas Gampe88dbad32018-06-26 19:54:12 -0700[diff] [blame]20#include "class_linker-inl.h"
21#include "gc_root-inl.h"
Vladimir Markob4eb1b12018-05-24 11:09:38 +0100[diff] [blame]22#include "mirror/class.h"
23#include "mirror/object_array-inl.h"
24#include "obj_ptr-inl.h"
25#include "runtime.h"
26
27namespace art {
28
29namespace mirror {
30class ArrayElementVarHandle;
31class ByteArrayViewVarHandle;
32class ByteBufferViewVarHandle;
33class CallSite;
34class ClassExt;
35class ClassLoader;
36class Constructor;
37class DexCache;
38class EmulatedStackFrame;
39class Field;
40class FieldVarHandle;
41class Method;
42class MethodHandleImpl;
43class MethodHandlesLookup;
44class MethodType;
45class Object;
46class Proxy;
47template<typename T> class PrimitiveArray;
48class Reference;
49class StackTraceElement;
50class String;
51class Throwable;
52class VarHandle;
53} // namespace mirror
54
55#define CLASS_ROOT_LIST(M) \
56 M(kJavaLangClass, "Ljava/lang/Class;", mirror::Class) \
57 M(kJavaLangObject, "Ljava/lang/Object;", mirror::Object) \
58 M(kClassArrayClass, "[Ljava/lang/Class;", mirror::ObjectArray<mirror::Class>) \
59 M(kObjectArrayClass, "[Ljava/lang/Object;", mirror::ObjectArray<mirror::Object>) \
60 M(kJavaLangString, "Ljava/lang/String;", mirror::String) \
61 M(kJavaLangDexCache, "Ljava/lang/DexCache;", mirror::DexCache) \
62 M(kJavaLangRefReference, "Ljava/lang/ref/Reference;", mirror::Reference) \
63 M(kJavaLangReflectConstructor, "Ljava/lang/reflect/Constructor;", mirror::Constructor) \
64 M(kJavaLangReflectField, "Ljava/lang/reflect/Field;", mirror::Field) \
65 M(kJavaLangReflectMethod, "Ljava/lang/reflect/Method;", mirror::Method) \
66 M(kJavaLangReflectProxy, "Ljava/lang/reflect/Proxy;", mirror::Proxy) \
67 M(kJavaLangStringArrayClass, "[Ljava/lang/String;", mirror::ObjectArray<mirror::String>) \
68 M(kJavaLangReflectConstructorArrayClass, "[Ljava/lang/reflect/Constructor;", mirror::ObjectArray<mirror::Constructor>) \
69 M(kJavaLangReflectFieldArrayClass, "[Ljava/lang/reflect/Field;", mirror::ObjectArray<mirror::Field>) \
70 M(kJavaLangReflectMethodArrayClass, "[Ljava/lang/reflect/Method;", mirror::ObjectArray<mirror::Method>) \
71 M(kJavaLangInvokeCallSite, "Ljava/lang/invoke/CallSite;", mirror::CallSite) \
Vladimir Markoc7aa87e2018-05-24 15:19:52 +0100[diff] [blame]72 M(kJavaLangInvokeMethodHandle, "Ljava/lang/invoke/MethodHandle;", mirror::MethodHandle) \
Vladimir Markob4eb1b12018-05-24 11:09:38 +0100[diff] [blame]73 M(kJavaLangInvokeMethodHandleImpl, "Ljava/lang/invoke/MethodHandleImpl;", mirror::MethodHandleImpl) \
74 M(kJavaLangInvokeMethodHandlesLookup, "Ljava/lang/invoke/MethodHandles$Lookup;", mirror::MethodHandlesLookup) \
75 M(kJavaLangInvokeMethodType, "Ljava/lang/invoke/MethodType;", mirror::MethodType) \
76 M(kJavaLangInvokeVarHandle, "Ljava/lang/invoke/VarHandle;", mirror::VarHandle) \
77 M(kJavaLangInvokeFieldVarHandle, "Ljava/lang/invoke/FieldVarHandle;", mirror::FieldVarHandle) \
78 M(kJavaLangInvokeArrayElementVarHandle, "Ljava/lang/invoke/ArrayElementVarHandle;", mirror::ArrayElementVarHandle) \
79 M(kJavaLangInvokeByteArrayViewVarHandle, "Ljava/lang/invoke/ByteArrayViewVarHandle;", mirror::ByteArrayViewVarHandle) \
80 M(kJavaLangInvokeByteBufferViewVarHandle, "Ljava/lang/invoke/ByteBufferViewVarHandle;", mirror::ByteBufferViewVarHandle) \
81 M(kJavaLangClassLoader, "Ljava/lang/ClassLoader;", mirror::ClassLoader) \
82 M(kJavaLangThrowable, "Ljava/lang/Throwable;", mirror::Throwable) \
83 M(kJavaLangClassNotFoundException, "Ljava/lang/ClassNotFoundException;", detail::NoMirrorType<detail::ClassNotFoundExceptionTag>) \
84 M(kJavaLangStackTraceElement, "Ljava/lang/StackTraceElement;", mirror::StackTraceElement) \
85 M(kDalvikSystemEmulatedStackFrame, "Ldalvik/system/EmulatedStackFrame;", mirror::EmulatedStackFrame) \
86 M(kPrimitiveBoolean, "Z", detail::NoMirrorType<uint8_t>) \
87 M(kPrimitiveByte, "B", detail::NoMirrorType<int8_t>) \
88 M(kPrimitiveChar, "C", detail::NoMirrorType<uint16_t>) \
89 M(kPrimitiveDouble, "D", detail::NoMirrorType<double>) \
90 M(kPrimitiveFloat, "F", detail::NoMirrorType<float>) \
91 M(kPrimitiveInt, "I", detail::NoMirrorType<int32_t>) \
92 M(kPrimitiveLong, "J", detail::NoMirrorType<int64_t>) \
93 M(kPrimitiveShort, "S", detail::NoMirrorType<int16_t>) \
94 M(kPrimitiveVoid, "V", detail::NoMirrorType<void>) \
95 M(kBooleanArrayClass, "[Z", mirror::PrimitiveArray<uint8_t>) \
96 M(kByteArrayClass, "[B", mirror::PrimitiveArray<int8_t>) \
97 M(kCharArrayClass, "[C", mirror::PrimitiveArray<uint16_t>) \
98 M(kDoubleArrayClass, "[D", mirror::PrimitiveArray<double>) \
99 M(kFloatArrayClass, "[F", mirror::PrimitiveArray<float>) \
100 M(kIntArrayClass, "[I", mirror::PrimitiveArray<int32_t>) \
101 M(kLongArrayClass, "[J", mirror::PrimitiveArray<int64_t>) \
102 M(kShortArrayClass, "[S", mirror::PrimitiveArray<int16_t>) \
103 M(kJavaLangStackTraceElementArrayClass, "[Ljava/lang/StackTraceElement;", mirror::ObjectArray<mirror::StackTraceElement>) \
Nicolas Geoffray6b9fd8c2018-11-16 10:25:42 +0000[diff] [blame]104 M(kJavaLangClassLoaderArrayClass, "[Ljava/lang/ClassLoader;", mirror::ObjectArray<mirror::ClassLoader>) \
Vladimir Markob4eb1b12018-05-24 11:09:38 +0100[diff] [blame]105 M(kDalvikSystemClassExt, "Ldalvik/system/ClassExt;", mirror::ClassExt)
106
107// Well known mirror::Class roots accessed via ClassLinker::GetClassRoots().
108enum class ClassRoot : uint32_t {
109#define CLASS_ROOT_ENUMERATOR(name, descriptor, mirror_type) name,
110 CLASS_ROOT_LIST(CLASS_ROOT_ENUMERATOR)
111#undef CLASS_ROOT_ENUMERATOR
112 kMax,
113};
114
115const char* GetClassRootDescriptor(ClassRoot class_root);
116
117template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
118inline ObjPtr<mirror::Class> GetClassRoot(
119 ClassRoot class_root,
120 ObjPtr<mirror::ObjectArray<mirror::Class>> class_roots) REQUIRES_SHARED(Locks::mutator_lock_) {
121 DCHECK(class_roots != nullptr);
122 if (kReadBarrierOption == kWithReadBarrier) {
123 // With read barrier all references must point to the to-space.
124 // Without read barrier, this check could fail.
125 DCHECK_EQ(class_roots, Runtime::Current()->GetClassLinker()->GetClassRoots());
126 }
127 DCHECK_LT(static_cast<uint32_t>(class_root), static_cast<uint32_t>(ClassRoot::kMax));
128 int32_t index = static_cast<int32_t>(class_root);
129 ObjPtr<mirror::Class> klass =
130 class_roots->GetWithoutChecks<kDefaultVerifyFlags, kReadBarrierOption>(index);
131 DCHECK(klass != nullptr);
Vladimir Markobcf17522018-06-01 13:14:32 +0100[diff] [blame]132 return klass;
Vladimir Markob4eb1b12018-05-24 11:09:38 +0100[diff] [blame]133}
134
135template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
136inline ObjPtr<mirror::Class> GetClassRoot(ClassRoot class_root, ClassLinker* linker)
137 REQUIRES_SHARED(Locks::mutator_lock_) {
138 return GetClassRoot<kReadBarrierOption>(class_root, linker->GetClassRoots<kReadBarrierOption>());
139}
140
141template <ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
142inline ObjPtr<mirror::Class> GetClassRoot(ClassRoot class_root)
143 REQUIRES_SHARED(Locks::mutator_lock_) {
144 return GetClassRoot<kReadBarrierOption>(class_root, Runtime::Current()->GetClassLinker());
145}
146
147namespace detail {
148
149class ClassNotFoundExceptionTag;
150template <class Tag> struct NoMirrorType;
151
152template <class MirrorType>
153struct ClassRootSelector; // No definition for unspecialized ClassRoot selector.
154
155#define SPECIALIZE_CLASS_ROOT_SELECTOR(name, descriptor, mirror_type) \
156 template <> \
157 struct ClassRootSelector<mirror_type> { \
158 static constexpr ClassRoot value = ClassRoot::name; \
159 };
160
161CLASS_ROOT_LIST(SPECIALIZE_CLASS_ROOT_SELECTOR)
162
163#undef SPECIALIZE_CLASS_ROOT_SELECTOR
164
165} // namespace detail
166
167template <class MirrorType, ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
168inline ObjPtr<mirror::Class> GetClassRoot(ObjPtr<mirror::ObjectArray<mirror::Class>> class_roots)
169 REQUIRES_SHARED(Locks::mutator_lock_) {
Roland Levillaindee81692018-08-23 16:05:19 +0100[diff] [blame]170 return GetClassRoot<kReadBarrierOption>(detail::ClassRootSelector<MirrorType>::value,
171 class_roots);
Vladimir Markob4eb1b12018-05-24 11:09:38 +0100[diff] [blame]172}
173
174template <class MirrorType, ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
175inline ObjPtr<mirror::Class> GetClassRoot(ClassLinker* linker)
176 REQUIRES_SHARED(Locks::mutator_lock_) {
Roland Levillaindee81692018-08-23 16:05:19 +0100[diff] [blame]177 return GetClassRoot<kReadBarrierOption>(detail::ClassRootSelector<MirrorType>::value, linker);
Vladimir Markob4eb1b12018-05-24 11:09:38 +0100[diff] [blame]178}
179
180template <class MirrorType, ReadBarrierOption kReadBarrierOption = kWithReadBarrier>
181inline ObjPtr<mirror::Class> GetClassRoot() REQUIRES_SHARED(Locks::mutator_lock_) {
Roland Levillaindee81692018-08-23 16:05:19 +0100[diff] [blame]182 return GetClassRoot<kReadBarrierOption>(detail::ClassRootSelector<MirrorType>::value);
Vladimir Markob4eb1b12018-05-24 11:09:38 +0100[diff] [blame]183}
184
185} // namespace art
186
187#endif // ART_RUNTIME_CLASS_ROOT_H_