51 lines
1.3 KiB
Java
51 lines
1.3 KiB
Java
/*
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* Copyright 2016 Hippo Seven
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.hippo.yorozuya;
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public class Pool<T> {
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private final T[] mArray;
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private final int mMaxSize;
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private int mSize;
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@SuppressWarnings("unchecked")
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public Pool(int size) {
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if (size <= 0) {
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throw new IllegalStateException("Pool size must > 0, it is " + size);
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}
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mArray = (T[]) new Object[size];
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mMaxSize = size;
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mSize = 0;
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}
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public void push(T t) {
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if (t != null && mSize < mMaxSize) {
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mArray[mSize++] = t;
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}
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}
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public T pop() {
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if (mSize > 0) {
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T t = mArray[--mSize];
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mArray[mSize] = null;
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return t;
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} else {
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return null;
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}
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}
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}
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