using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using HuizhongLibrary.Log;

namespace HuizhongLibrary.Network
{
    public class ServerConnectionPool
    {
        Queue<ServerConnection> argsPool;

        public ServerConnectionPool()
        {
            argsPool = new Queue<ServerConnection>();
        }

        #region 新增
        public void CheckIn(ServerConnection item)
        {
            lock (argsPool)
            {
                try
                {
                    argsPool.Enqueue(item);
                }
                catch (Exception ex)
                {
                    ErrorFollow.TraceWrite(ex.TargetSite.Name, ex.StackTrace, ex.Message);
                }
            }
        }
        #endregion
        #region 移除并返回开始对象
        public ServerConnection CheckOut()
        {
            lock (argsPool)
            {
                try
                {
                    if (argsPool.Count == 0) return null;
                    return argsPool.Dequeue();
                }
                catch (Exception ex)
                {
                    ErrorFollow.TraceWrite(ex.TargetSite.Name, ex.StackTrace, ex.Message);
                }
            }
            return null;
        }
        #endregion
        #region 返回开始对象,但不移除
        public ServerConnection Peek()
        {
            lock (argsPool)
            {
                try
                {
                    if (argsPool.Count == 0) return null;
                    return argsPool.Peek();
                }
                catch (Exception ex)
                {
                    ErrorFollow.TraceWrite(ex.TargetSite.Name, ex.StackTrace, ex.Message);
                }
            }
            return null;
        }
        #endregion
        #region 移除
        public void Clear()
        {
            lock (argsPool)
            {
                try
                {
                    argsPool.Clear();
                }
                catch (Exception ex)
                {
                    ErrorFollow.TraceWrite(ex.TargetSite.Name, ex.StackTrace, ex.Message);
                }
            }
        }
        #endregion
        #region 返回数量
        public int Available
        {
            get
            {
                lock (argsPool)
                {
                    return argsPool.Count;
                }
            }
        }
        #endregion

    }
}