cockClient2/Assets/Plugins/CxShine/Singleton/ScriptSingleton.cs

namespace Plugins.CxShine.Singleton
{
    public abstract class ScriptSingleton<T>
        where T : new()
    {
        private static T _instance;
        private static readonly object _lock = new();

        public static T Instance
        {
            get
            {
                if (_instance == null)
                    // 上锁，防止重复实例化
                    lock (_lock)
                    {
                        if (_instance == null) _instance = new T();
                    }

                return _instance;
            }
        }
    }
}