58 lines
1.5 KiB
C#
58 lines
1.5 KiB
C#
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/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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This file is part of dnSpy
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dnSpy is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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dnSpy is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Collections.Generic;
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namespace dnSpy.Decompiler.ILSpy.Core.CSharp {
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sealed class ThreadSafeObjectPool<T> where T : class {
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readonly List<T> freeObjs;
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readonly Func<T> createObject;
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readonly Action<T> resetObject;
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readonly object lockObj = new object();
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public ThreadSafeObjectPool(int size, Func<T> createObject, Action<T> resetObject) {
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if (size <= 0)
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throw new ArgumentException();
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freeObjs = new List<T>(size);
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this.createObject = createObject;
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this.resetObject = resetObject;
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}
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public T Allocate() {
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lock (lockObj) {
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if (freeObjs.Count > 0) {
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int i = freeObjs.Count - 1;
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var o = freeObjs[i];
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freeObjs.RemoveAt(i);
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return o;
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}
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return createObject();
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}
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}
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public void Free(T obj) {
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resetObject(obj);
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lock (lockObj)
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freeObjs.Add(obj);
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}
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}
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}
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