using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Extensions.Caching.Memory;
using System.Text;

namespace IStation
{
    /// <summary>
    /// 待编写
    /// </summary>
    internal sealed partial class SharedMemoryCache : IMemoryCacheDirect
    {
        /// <summary>
        /// 单例模式（延迟加载）
        /// </summary>
        private static readonly Lazy<SharedMemoryCache> _lazy = new Lazy<SharedMemoryCache>(() => new SharedMemoryCache());

        /// <summary>
        /// MemoryCache 实例
        /// </summary>
        private MemoryCache _memoryCache;

        /// <summary>
        /// 当前正在设置缓存项的缓存键集合
        /// Collection of all cache keys currently executing a function to set a cache item
        /// </summary>
        private ConcurrentDictionary<string, CacheKeyBeingHandled> _cacheKeysBeingHandled;

        /// <summary>
        /// Locker object
        /// </summary>
        private object _wipeLock = new object();

        /// <summary>
        /// 标识Wipe方法是否正在执行
        /// State flag indicating whether the wipe method is currently being executed
        /// </summary>
        private bool _isWiping = false;

        /// <summary>
        /// Locker object, used to lock set operations when a wipe is in progress
        /// </summary>
        private object _setLock = new object();

        /// <summary>
        /// State flag indicating whether any non-waitable set action is currently being executed
        /// </summary>
        private bool _isSetting = false;



    }

}