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/*
* 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_GLOBAL_REF_H_included
#define SCOPED_GLOBAL_REF_H_included
#include "JNIHelp.h"
// A smart pointer that provides access to a JNI global reference
class ScopedGlobalRef {
public:
ScopedGlobalRef(JNIEnv* env, jobject localRef)
: mEnv(env), mGlobalRef(NULL)
{
mGlobalRef = env->NewGlobalRef(localRef);
}
~ScopedGlobalRef() {
reset();
}
void reset() {
if (mGlobalRef != NULL) {
mEnv->DeleteGlobalRef(mGlobalRef);
mGlobalRef = NULL;
}
}
jobject get () const {
return mGlobalRef;
}
private:
JNIEnv* mEnv;
jobject mGlobalRef;
// Disallow copy and assignment.
ScopedGlobalRef(const ScopedGlobalRef&);
void operator=(const ScopedGlobalRef&);
};
#endif // SCOPED_GLOBAL_REF_H_included
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