| Alex Light | 55eccdf | 2019-10-07 13:51:13 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2019 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 | #include <cstdio> |
| 18 | #include <memory> |
| 19 | #include <mutex> |
| 20 | #include <string> |
| 21 | #include <vector> |
| 22 | |
| 23 | #include "class_linker.h" |
| Vladimir Marko | 5868ada | 2020-05-12 11:50:34 +0100 | [diff] [blame] | 24 | #include "class_root-inl.h" |
| Alex Light | 55eccdf | 2019-10-07 13:51:13 +0000 | [diff] [blame] | 25 | #include "jni.h" |
| 26 | #include "jni/jni_internal.h" |
| 27 | #include "mirror/class.h" |
| 28 | #include "mirror/method_handle_impl.h" |
| 29 | #include "mirror/object-inl.h" |
| 30 | #include "mirror/object_array-alloc-inl.h" |
| 31 | #include "reflection.h" |
| 32 | #include "reflective_handle.h" |
| 33 | #include "reflective_handle_scope-inl.h" |
| 34 | #include "runtime.h" |
| 35 | #include "scoped_thread_state_change-inl.h" |
| 36 | #include "thread-inl.h" |
| 37 | |
| 38 | namespace art { |
| 39 | namespace Test1985StructuralRedefineStackScope { |
| 40 | |
| 41 | extern "C" JNICALL jobject JNIEXPORT Java_Main_NativeFieldScopeCheck(JNIEnv* env, |
| 42 | jclass, |
| 43 | jobject field, |
| 44 | jobject runnable) { |
| 45 | jfieldID fid = env->FromReflectedField(field); |
| 46 | jclass runnable_klass = env->FindClass("java/lang/Runnable"); |
| 47 | jmethodID run = env->GetMethodID(runnable_klass, "run", "()V"); |
| 48 | ScopedObjectAccess soa(Thread::Current()); |
| 49 | StackHandleScope<4> hs(soa.Self()); |
| 50 | StackArtFieldHandleScope<1> fhs(soa.Self()); |
| 51 | StackArtFieldHandleScope<1> bhs(soa.Self()); |
| 52 | ReflectiveHandle<ArtField> rf(fhs.NewHandle(jni::DecodeArtField(fid))); |
| 53 | ReflectiveHandle<ArtField> bf(bhs.NewHandle(jni::DecodeArtField(fid))); |
| 54 | ArtField* pre_ptr = rf.Get(); |
| 55 | { |
| 56 | ScopedThreadSuspension sts(soa.Self(), ThreadState::kNative); |
| 57 | // Upcall to perform redefinition. |
| 58 | env->CallVoidMethod(runnable, run); |
| 59 | } |
| 60 | Handle<mirror::ObjectArray<mirror::Class>> mt_arr( |
| 61 | hs.NewHandle(mirror::ObjectArray<mirror::Class>::Alloc( |
| 62 | soa.Self(), |
| 63 | Runtime::Current()->GetClassLinker()->FindArrayClass(soa.Self(), |
| 64 | GetClassRoot<mirror::Class>()), |
| 65 | 0))); |
| 66 | Handle<mirror::MethodType> mt(hs.NewHandle(mirror::MethodType::Create( |
| 67 | soa.Self(), hs.NewHandle(GetClassRoot<mirror::Object>()), mt_arr))); |
| 68 | Handle<mirror::MethodHandleImpl> mhi(hs.NewHandle( |
| 69 | mirror::MethodHandleImpl::Create(soa.Self(), |
| 70 | reinterpret_cast<uintptr_t>(rf.Get()), |
| 71 | (rf->IsStatic() ? mirror::MethodHandle::Kind::kStaticGet |
| 72 | : mirror::MethodHandle::Kind::kInstanceGet), |
| 73 | mt))); |
| 74 | CHECK_EQ(rf.Get(), bf.Get()) << "rf: " << rf->PrettyField() << " bf: " << bf->PrettyField(); |
| 75 | // TODO Modify this to work for when run doesn't cause a change. |
| 76 | CHECK_NE(pre_ptr, rf.Get()) << "pre_ptr: " << pre_ptr->PrettyField() |
| 77 | << " rf: " << rf->PrettyField(); |
| 78 | CHECK_EQ(fid, jni::EncodeArtField(rf)); |
| 79 | return soa.AddLocalReference<jobject>(mhi.Get()); |
| 80 | } |
| 81 | |
| 82 | } // namespace Test1985StructuralRedefineStackScope |
| 83 | } // namespace art |