标签：缓存 Span C# Lock Cache System item 基类 public

ICache接口

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EasyIoT.Cache
{
    /// <summary>
    /// 缓存接口
    /// </summary>
    /// <typeparam name="T">缓存实体</typeparam>
    public interface ICache<T> : IList<T>, IQueryable<T>
    {

    }
}

CacheBase基类

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace EasyIoT.Cache
{
    /// <summary>
    /// 缓存基类
    /// </summary>
    /// <typeparam name="T">缓存实体</typeparam>
    public abstract class CacheBase<T> : ICache<T>
    {
        protected List<T> Cache = new List<T>();

        protected ReaderWriterLock Lock = new ReaderWriterLock();

        protected TimeSpan Span = TimeSpan.FromMilliseconds(100);

        public virtual T this[int index]
        {
            get
            {
                Lock.AcquireReaderLock(Span);
                try
                {
                    return Cache[index];
                }
                finally
                {
                    Lock.ReleaseReaderLock();
                }
            }
            set
            {
                Lock.AcquireWriterLock(Span);
                try
                {
                    Cache[index] = value;
                }
                finally
                {
                    Lock.ReleaseWriterLock();
                }
            }
        }

        public virtual int Count
        {
            get
            {
                Lock.AcquireReaderLock(Span);
                try
                {
                    return Cache.Count;
                }
                finally
                {
                    Lock.ReleaseReaderLock();
                }
            }
        }

        public virtual bool IsReadOnly => false;

        public Expression Expression => Cache.AsQueryable().Expression;

        public Type ElementType => typeof(T);

        public IQueryProvider Provider => Cache.AsQueryable().Provider;

        public void Add(T item)
        {
            if (item != null)
            {
                Lock.AcquireWriterLock(Span);
                try
                {
                    Cache.Add(item);
                }
                finally
                {
                    Lock.ReleaseWriterLock();
                }
            }
            else
            {
                return;
            }
        }

        public void Clear()
        {
            Lock.AcquireWriterLock(Span);
            try
            {
                Cache.Clear();
            }
            finally
            {
                Lock.ReleaseWriterLock();
            }
        }

        public bool Contains(T item)
        {
            if (item != null)
            {
                Lock.AcquireReaderLock(Span);
                try
                {
                    return Cache.Contains(item);
                }
                finally
                {
                    Lock.ReleaseReaderLock();
                }
            }
            else
            {
                return false;
            }
        }

        public void CopyTo(T[] array, int arrayIndex)
        {
            if (array != null)
            {
                Lock.AcquireReaderLock(Span);
                try
                {
                    Cache.CopyTo(array, arrayIndex);
                }
                finally
                {
                    Lock.ReleaseReaderLock();
                }
            }
            else
            {
                return;
            }
        }

        public IEnumerator<T> GetEnumerator()
        {
            return GetEnumerator() as IEnumerator<T>;
        }

        public int IndexOf(T item)
        {
            if (item != null)
            {
                Lock.AcquireReaderLock(Span);
                try
                {
                    return Cache.IndexOf(item);
                }
                finally
                {
                    Lock.ReleaseReaderLock();
                }
            }
            else
            {
                return -1;
            }
        }

        public void Insert(int index, T item)
        {
            if (item != null)
            {
                Lock.AcquireWriterLock(Span);
                try
                {
                    Cache.Insert(index, item);
                }
                finally
                {
                    Lock.ReleaseWriterLock();
                }
            }
            else
            {
                return;
            }
        }

        public bool Remove(T item)
        {
            if (item != null)
            {
                Lock.AcquireWriterLock(Span);
                try
                {
                    return Cache.Remove(item);
                }
                finally
                {
                    Lock.ReleaseWriterLock();
                }
            }
            else
            {
                return false;
            }
        }

        public void RemoveAt(int index)
        {
            Lock.AcquireWriterLock(Span);
            try
            {
                Cache.RemoveAt(index);
            }
            finally
            {
                Lock.ReleaseWriterLock();
            }
        }

        IEnumerator IEnumerable.GetEnumerator()
        {
            Lock.AcquireReaderLock(Span);
            try
            {
                return Cache.GetEnumerator();
            }
            finally
            {
                Lock.ReleaseReaderLock();
            }
        }
    }
}

标签：缓存,Span,C#,Lock,Cache,System,item,基类,public
来源： https://www.cnblogs.com/liveornot/p/14026999.html

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