BLL Product

ningshuxia

2023-02-06 1fc0b4ed96d4c4b1ff7142926239998de32b2ada

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using System;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
 
namespace IStation
{
    internal sealed partial class SharedMemoryCache
    {
        /// <summary>
        /// 移除所有缓存项，在移除之前阻止任何操作
        /// Remove all cache entries, blocking any set operations until complete
        /// </summary>
        public void Wipe()
        {
            if (this._isWiping) { return; }
 
            lock (this._wipeLock)
            {
                if (this._isWiping) { return; }
 
                this._isWiping = true;
 
                SpinWait.SpinUntil(() => !this._isSetting); // wait until all running set operations are complete (new ones are blocked)
 
                var keys = this._memoryCache.Select(x => x.Key);
 
                Parallel.ForEach(keys, x => ((IMemoryCacheDirect)this).Remove(x));
 
                try
                {
                    if (keys.Any())
                    {
                        throw new Exception("Unable to remove keys: " + string.Join(", ", keys));
                    }
                }
                finally
                {
                    this._isWiping = false;
                }
            }
        }
    }
}