/*
* Copyright 2014 NAVER Corp.
*
* 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.
*/
package com.navercorp.pinpoint.bootstrap.interceptor.registry;
import java.util.concurrent.atomic.AtomicReferenceArray;
/**
* @author emeroad
*/
public final class WeakAtomicReferenceArray<T> {
private final int length;
private final AtomicReferenceArray<T> atomicArray;
// private final T[] array;
public WeakAtomicReferenceArray(int length, Class<? extends T> clazz) {
this.length = length;
this.atomicArray = new AtomicReferenceArray<T>(length);
// this.array = (T[]) Array.newInstance(clazz, length);
}
public void set(int index, T newValue) {
this.atomicArray.set(index, newValue);
// need TestCase ~~
// this.array[index] = newValue;
}
public int length() {
return length;
}
public T get(int index) {
// try not thread safe read -> fail -> thread safe read
// final T unsafeValue = this.array[index];
// if (unsafeValue != null) {
// return unsafeValue;
// }
// return (T) this.array[index];
// thread safe read
return this.atomicArray.get(index);
}
}