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

namespace SHJX.Service.PortClient
{
    /// <summary>
    /// 任务互斥锁工具类
    /// </summary>
    public class TaskMutexUtil : IDisposable
    {
        /// <summary>
        /// 定义一个互斥锁的实例
        /// </summary>
        private readonly Mutex mut;

        /// <summary>
        /// 判断是否已有相同名称的互斥锁存在 <para/>
        /// false：已存在，true：未存在
        /// </summary>
        public bool ResBool { get; set; }

        /// <param name="mutexKey">互斥锁名称</param>
        public TaskMutexUtil(string mutexKey)
        {
            mut = new Mutex(false, mutexKey, out bool res);
            ResBool = res;
            mut.WaitOne();
        }

        /// <summary>
        /// 释放
        /// </summary>
        public void Dispose()
        {
            //释放锁，让其他进程(或线程)得以继续执行
            mut.ReleaseMutex();
            //释放当前锁资源，为了避免互斥体占用唯一名称导致后续无法判断
            mut.Dispose();
        }
    }
}