100 lines
3.7 KiB
C
100 lines
3.7 KiB
C
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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_CLASS_ROOT_INL_H_
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#define ART_RUNTIME_CLASS_ROOT_INL_H_
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#include "class_root.h"
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#include "class_linker-inl.h"
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#include "mirror/class.h"
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#include "mirror/object_array-inl.h"
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#include "obj_ptr-inl.h"
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#include "runtime.h"
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namespace art {
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template <ReadBarrierOption kReadBarrierOption>
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inline ObjPtr<mirror::Class> GetClassRoot(ClassRoot class_root,
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ObjPtr<mirror::ObjectArray<mirror::Class>> class_roots) {
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DCHECK(class_roots != nullptr);
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if (kReadBarrierOption == kWithReadBarrier) {
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// With read barrier all references must point to the to-space.
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// Without read barrier, this check could fail.
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DCHECK_EQ(class_roots, Runtime::Current()->GetClassLinker()->GetClassRoots());
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}
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DCHECK_LT(static_cast<uint32_t>(class_root), static_cast<uint32_t>(ClassRoot::kMax));
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int32_t index = static_cast<int32_t>(class_root);
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ObjPtr<mirror::Class> klass =
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class_roots->GetWithoutChecks<kDefaultVerifyFlags, kReadBarrierOption>(index);
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DCHECK(klass != nullptr);
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return klass;
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}
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template <ReadBarrierOption kReadBarrierOption>
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inline ObjPtr<mirror::Class> GetClassRoot(ClassRoot class_root, ClassLinker* linker)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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return GetClassRoot<kReadBarrierOption>(class_root, linker->GetClassRoots<kReadBarrierOption>());
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}
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template <ReadBarrierOption kReadBarrierOption>
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inline ObjPtr<mirror::Class> GetClassRoot(ClassRoot class_root)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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return GetClassRoot<kReadBarrierOption>(class_root, Runtime::Current()->GetClassLinker());
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}
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namespace detail {
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class ClassNotFoundExceptionTag;
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template <class Tag> struct NoMirrorType;
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template <class MirrorType>
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struct ClassRootSelector; // No definition for unspecialized ClassRoot selector.
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#define SPECIALIZE_CLASS_ROOT_SELECTOR(name, descriptor, mirror_type) \
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template <> \
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struct ClassRootSelector<mirror_type> { \
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static constexpr ClassRoot value = ClassRoot::name; \
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};
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CLASS_ROOT_LIST(SPECIALIZE_CLASS_ROOT_SELECTOR)
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#undef SPECIALIZE_CLASS_ROOT_SELECTOR
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} // namespace detail
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template <class MirrorType, ReadBarrierOption kReadBarrierOption>
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inline ObjPtr<mirror::Class> GetClassRoot(ObjPtr<mirror::ObjectArray<mirror::Class>> class_roots)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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return GetClassRoot<kReadBarrierOption>(detail::ClassRootSelector<MirrorType>::value,
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class_roots);
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}
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template <class MirrorType, ReadBarrierOption kReadBarrierOption>
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inline ObjPtr<mirror::Class> GetClassRoot(ClassLinker* linker)
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REQUIRES_SHARED(Locks::mutator_lock_) {
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return GetClassRoot<kReadBarrierOption>(detail::ClassRootSelector<MirrorType>::value, linker);
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}
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template <class MirrorType, ReadBarrierOption kReadBarrierOption>
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inline ObjPtr<mirror::Class> GetClassRoot() REQUIRES_SHARED(Locks::mutator_lock_) {
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return GetClassRoot<kReadBarrierOption>(detail::ClassRootSelector<MirrorType>::value);
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}
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} // namespace art
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#endif // ART_RUNTIME_CLASS_ROOT_INL_H_
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