1 /* 2 * Copyright (C) 2010 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 #ifndef ART_TEST_TI_AGENT_SCOPED_LOCAL_REF_H_ 18 #define ART_TEST_TI_AGENT_SCOPED_LOCAL_REF_H_ 19 20 #include "jni.h" 21 22 #include <stddef.h> 23 24 #include "android-base/macros.h" 25 26 namespace art { 27 28 template<typename T> 29 class ScopedLocalRef { 30 public: 31 ScopedLocalRef(JNIEnv* env, T localRef) : mEnv(env), mLocalRef(localRef) { 32 } 33 34 ~ScopedLocalRef() { 35 reset(); 36 } 37 38 void reset(T ptr = nullptr) { 39 if (ptr != mLocalRef) { 40 if (mLocalRef != nullptr) { 41 mEnv->DeleteLocalRef(mLocalRef); 42 } 43 mLocalRef = ptr; 44 } 45 } 46 47 T release() WARN_UNUSED { 48 T localRef = mLocalRef; 49 mLocalRef = nullptr; 50 return localRef; 51 } 52 53 T get() const { 54 return mLocalRef; 55 } 56 57 private: 58 JNIEnv* const mEnv; 59 T mLocalRef; 60 61 DISALLOW_COPY_AND_ASSIGN(ScopedLocalRef); 62 }; 63 64 } // namespace art 65 66 #endif // ART_TEST_TI_AGENT_SCOPED_LOCAL_REF_H_ 67
