68 lines
2.6 KiB
C++
68 lines
2.6 KiB
C++
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/*
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* Copyright (C) 2017 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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#include "method_handles_lookup.h"
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#include "class-alloc-inl.h"
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#include "class_root-inl.h"
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#include "dex/modifiers.h"
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#include "handle_scope.h"
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#include "jni/jni_internal.h"
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#include "mirror/method_handle_impl.h"
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#include "obj_ptr-inl.h"
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#include "object-inl.h"
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#include "well_known_classes.h"
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namespace art {
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namespace mirror {
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ObjPtr<MethodHandlesLookup> MethodHandlesLookup::Create(Thread* const self,
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Handle<Class> lookup_class)
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REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_) {
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static constexpr uint32_t kAllModes = kAccPublic | kAccPrivate | kAccProtected | kAccStatic;
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ObjPtr<MethodHandlesLookup> mhl = ObjPtr<MethodHandlesLookup>::DownCast(
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GetClassRoot<MethodHandlesLookup>()->AllocObject(self));
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mhl->SetFieldObject<false>(LookupClassOffset(), lookup_class.Get());
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mhl->SetField32<false>(AllowedModesOffset(), kAllModes);
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return mhl;
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}
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ObjPtr<MethodHandlesLookup> MethodHandlesLookup::GetDefault(Thread* const self) {
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ArtMethod* lookup = jni::DecodeArtMethod(WellKnownClasses::java_lang_invoke_MethodHandles_lookup);
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JValue result;
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lookup->Invoke(self, nullptr, 0, &result, "L");
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return ObjPtr<MethodHandlesLookup>::DownCast(result.GetL());
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}
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ObjPtr<MethodHandle> MethodHandlesLookup::FindConstructor(Thread* const self,
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Handle<Class> klass,
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Handle<MethodType> method_type) {
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ArtMethod* findConstructor =
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jni::DecodeArtMethod(WellKnownClasses::java_lang_invoke_MethodHandles_Lookup_findConstructor);
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uint32_t args[] = {
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static_cast<uint32_t>(reinterpret_cast<uintptr_t>(this)),
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static_cast<uint32_t>(reinterpret_cast<uintptr_t>(klass.Get())),
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static_cast<uint32_t>(reinterpret_cast<uintptr_t>(method_type.Get()))
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};
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JValue result;
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findConstructor->Invoke(self, args, sizeof(args), &result, "LLL");
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return ObjPtr<MethodHandle>::DownCast(result.GetL());
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}
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} // namespace mirror
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} // namespace art
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