| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <cstdio> |
| #include <memory> |
| #include <mutex> |
| #include <string> |
| #include <vector> |
| |
| #include "class_linker.h" |
| #include "class_root.h" |
| #include "jni.h" |
| #include "jni/jni_internal.h" |
| #include "mirror/class.h" |
| #include "mirror/method_handle_impl.h" |
| #include "mirror/object-inl.h" |
| #include "mirror/object_array-alloc-inl.h" |
| #include "reflection.h" |
| #include "reflective_handle.h" |
| #include "reflective_handle_scope-inl.h" |
| #include "runtime.h" |
| #include "scoped_thread_state_change-inl.h" |
| #include "thread-inl.h" |
| |
| namespace art { |
| namespace Test1985StructuralRedefineStackScope { |
| |
| extern "C" JNICALL jobject JNIEXPORT Java_Main_NativeFieldScopeCheck(JNIEnv* env, |
| jclass, |
| jobject field, |
| jobject runnable) { |
| jfieldID fid = env->FromReflectedField(field); |
| jclass runnable_klass = env->FindClass("java/lang/Runnable"); |
| jmethodID run = env->GetMethodID(runnable_klass, "run", "()V"); |
| ScopedObjectAccess soa(Thread::Current()); |
| StackHandleScope<4> hs(soa.Self()); |
| StackArtFieldHandleScope<1> fhs(soa.Self()); |
| StackArtFieldHandleScope<1> bhs(soa.Self()); |
| ReflectiveHandle<ArtField> rf(fhs.NewHandle(jni::DecodeArtField(fid))); |
| ReflectiveHandle<ArtField> bf(bhs.NewHandle(jni::DecodeArtField(fid))); |
| ArtField* pre_ptr = rf.Get(); |
| { |
| ScopedThreadSuspension sts(soa.Self(), ThreadState::kNative); |
| // Upcall to perform redefinition. |
| env->CallVoidMethod(runnable, run); |
| } |
| Handle<mirror::ObjectArray<mirror::Class>> mt_arr( |
| hs.NewHandle(mirror::ObjectArray<mirror::Class>::Alloc( |
| soa.Self(), |
| Runtime::Current()->GetClassLinker()->FindArrayClass(soa.Self(), |
| GetClassRoot<mirror::Class>()), |
| 0))); |
| Handle<mirror::MethodType> mt(hs.NewHandle(mirror::MethodType::Create( |
| soa.Self(), hs.NewHandle(GetClassRoot<mirror::Object>()), mt_arr))); |
| Handle<mirror::MethodHandleImpl> mhi(hs.NewHandle( |
| mirror::MethodHandleImpl::Create(soa.Self(), |
| reinterpret_cast<uintptr_t>(rf.Get()), |
| (rf->IsStatic() ? mirror::MethodHandle::Kind::kStaticGet |
| : mirror::MethodHandle::Kind::kInstanceGet), |
| mt))); |
| CHECK_EQ(rf.Get(), bf.Get()) << "rf: " << rf->PrettyField() << " bf: " << bf->PrettyField(); |
| // TODO Modify this to work for when run doesn't cause a change. |
| CHECK_NE(pre_ptr, rf.Get()) << "pre_ptr: " << pre_ptr->PrettyField() |
| << " rf: " << rf->PrettyField(); |
| CHECK_EQ(fid, jni::EncodeArtField(rf)); |
| return soa.AddLocalReference<jobject>(mhi.Get()); |
| } |
| |
| } // namespace Test1985StructuralRedefineStackScope |
| } // namespace art |
