1 /* 2 * Copyright (C) 2015 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 "arch/context.h" 18 #include "art_method-inl.h" 19 #include "jni.h" 20 #include "scoped_thread_state_change-inl.h" 21 #include "stack.h" 22 #include "thread.h" 23 24 namespace art { 25 26 namespace { 27 28 class TestVisitor : public StackVisitor { 29 public: 30 TestVisitor(const ScopedObjectAccess& soa, Context* context, jobject expected_value) 31 REQUIRES_SHARED(Locks::mutator_lock_) 32 : StackVisitor(soa.Self(), context, StackVisitor::StackWalkKind::kIncludeInlinedFrames), 33 expected_value_(expected_value), 34 found_(false), 35 soa_(soa) {} 36 37 bool VisitFrame() REQUIRES_SHARED(Locks::mutator_lock_) { 38 ArtMethod* m = GetMethod(); 39 std::string m_name(m->GetName()); 40 41 if (m_name == "testCase") { 42 found_ = true; 43 uint32_t value = 0; 44 CHECK(GetVReg(m, 1, kReferenceVReg, &value)); 45 CHECK_EQ(reinterpret_cast<mirror::Object*>(value), 46 soa_.Decode<mirror::Object>(expected_value_).Ptr()); 47 } 48 return true; 49 } 50 51 jobject expected_value_; 52 bool found_; 53 const ScopedObjectAccess& soa_; 54 }; 55 56 } // namespace 57 58 extern "C" JNIEXPORT void JNICALL Java_Main_lookForMyRegisters(JNIEnv*, jclass, jobject value) { 59 ScopedObjectAccess soa(Thread::Current()); 60 std::unique_ptr<Context> context(Context::Create()); 61 TestVisitor visitor(soa, context.get(), value); 62 visitor.WalkStack(); 63 CHECK(visitor.found_); 64 } 65 66 } // namespace art 67
