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

namespace MsBuildTest
{
    public sealed class Context
    {
        const string mutexName = @"Global\JobRunner";
        private static Context _instance;
        private static readonly System.Threading.Mutex _mutex = new System.Threading.Mutex(true, mutexName);

        public static Context Instance
        {
            get
            {
                lock (_mutex)
                {
                    if (_instance == null)
                    {
                        _instance = new Context();
                    }

                    return _instance;
                }
            }
        }

        /// <summary>
        /// Gets an ID, under which the task is running.
        /// </summary>
        public object Id
        {
            get;
            internal set;
        }
    }
}