2 * Copyright (C) 2010 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #ifndef SCOPED_LOCAL_REF_H_included
18 #define SCOPED_LOCAL_REF_H_included
24 // A smart pointer that deletes a JNI local reference when it goes out of scope.
26 class ScopedLocalRef {
28 ScopedLocalRef(JNIEnv* env, T localRef) : mEnv(env), mLocalRef(localRef) {
35 void reset(T ptr = NULL) {
36 if (ptr != mLocalRef) {
37 if (mLocalRef != NULL) {
38 mEnv->DeleteLocalRef(mLocalRef);
44 T release() __attribute__((warn_unused_result)) {
45 T localRef = mLocalRef;
58 // Disallow copy and assignment.
59 ScopedLocalRef(const ScopedLocalRef&);
60 void operator=(const ScopedLocalRef&);
63 #endif // SCOPED_LOCAL_REF_H_included