/*
* 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.profiler.sender;
import java.util.AbstractCollection;
import java.util.Iterator;
/**
* @author emeroad
*/
class UnsafeArrayCollection<E> extends AbstractCollection<E> {
private int size = 0;
private final Object[] array;
public UnsafeArrayCollection(int maxSize) {
this.array = new Object[maxSize];
}
@Override
public boolean add(E o) {
if (array.length < size) {
throw new IndexOutOfBoundsException("size:" + this.size + " array.length:" + array.length);
}
// do not check array bound
array[size] = o;
size++;
return true;
}
@Override
public void clear() {
// Need to clear values in array. It costs CPU but prevent memory leak.
for (int i = 0; i < size; i++) {
this.array[i] = null;
}
this.size = 0;
}
@Override
public boolean isEmpty() {
return this.size == 0;
}
@Override
public Iterator iterator() {
throw new UnsupportedOperationException();
}
@Override
public int size() {
return size;
}
@Override
public Object[] toArray() {
// return internal array
return array;
}
}