/* OpenDiablo 2 - An open source re-implementation of Diablo 2 in C#
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
using System;
using System.Runtime.Caching;
using OpenDiablo2.Common.Interfaces;
namespace OpenDiablo2.Core
{
public sealed class Cache : ICache
{
private readonly static MemoryCache _cache = new MemoryCache("OpenDiablo2.Cache");
public Cache() { }
public T AddOrGetExisting(string key, Func valueFactory, CacheItemPolicy cacheItemPolicy = null)
{
var newValue = new Lazy(valueFactory);
var oldValue = _cache.AddOrGetExisting(key, newValue, cacheItemPolicy ?? new CacheItemPolicy()) as Lazy;
try
{
return (oldValue ?? newValue).Value;
}
catch
{
_cache.Remove(key);
throw;
}
}
}
}