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

namespace KGIS.Framework.ThreadManager
{
    public class ThreadManager
    {
        public static ThreadManager Instance { get; } = new ThreadManager();
        private List<CustomThread<object>> Threads = new List<CustomThread<object>>();
        private int _ActiveCount;
        public int ActiveCount
        {
            get
            {
                return Threads.FindAll(f => !((f.CurrThread.ThreadState & ThreadState.Stopped) == ThreadState.Stopped)).Count;
            }
        }
        private int _MaxThreadNum = -1;
        public int MaxThreadNum
        {
            get
            {
                if (_MaxThreadNum == -1)
                {
                    _MaxThreadNum = Environment.ProcessorCount;
                }
                return _MaxThreadNum;
            }
            set
            {
                _MaxThreadNum = value;
            }
        }
        public ThreadManager()
        {

        }

        ///<summary>
        ///静态方法，开启或唤醒一个线程去执行指定的回调方法
        ///</summary>
        ///<param name="waitCallback">委托实例</param>
        ///<param name="obj">传递给回调方法的参数</param>
        ///<param name="timeOut">当没有可用的线程时的等待时间，以毫秒为单位</param>
        ///<returns></returns>
        public CustomThread<T> QueueUserWorkItem<T>(TaskCallback<T> waitCallback, T obj, TaskCallback<T> completeCallback = null, int timeOut = 10000)
        {
            //锁住共享资源，实现线程安全
            lock (Threads)
            {
                try
                {
                    var t = new CustomThread<T>();
                    t.Start<T>(waitCallback, obj, completeCallback);
                    //Threads.Add(t);
                    return t;

                }
                finally
                {
                    //Monitor.Exit(Threads);
                }
            }
        }
        public static void InitThreadList()
        {
            //Threads = new ArrayList();
            //for (int i = 0; i < 1; i++)
            //{
            //    CustomThread t = new CustomThread();
            //    Threads.Add(t);
            //}
        }
    }
}