+++ /dev/null
-/*
- * Copyright (C) 2010 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.
- */
-
-#ifndef SCOPED_LOCAL_REF_H_included
-#define SCOPED_LOCAL_REF_H_included
-
-#include "jni.h"
-
-#include <stddef.h>
-
-// A smart pointer that deletes a JNI local reference when it goes out of scope.
-template<typename T>
-class ScopedLocalRef {
-public:
- ScopedLocalRef(JNIEnv* env, T localRef) : mEnv(env), mLocalRef(localRef) {
- }
-
- ~ScopedLocalRef() {
- reset();
- }
-
- void reset(T ptr = NULL) {
- if (ptr != mLocalRef) {
- if (mLocalRef != NULL) {
- mEnv->DeleteLocalRef(mLocalRef);
- }
- mLocalRef = ptr;
- }
- }
-
- T release() __attribute__((warn_unused_result)) {
- T localRef = mLocalRef;
- mLocalRef = NULL;
- return localRef;
- }
-
- T get() const {
- return mLocalRef;
- }
-
-private:
- JNIEnv* mEnv;
- T mLocalRef;
-
- // Disallow copy and assignment.
- ScopedLocalRef(const ScopedLocalRef&);
- void operator=(const ScopedLocalRef&);
-};
-
-#endif // SCOPED_LOCAL_REF_H_included