System.Net.NetworkInformation.HostInformationPal.EnsureFixedInfo C# (CSharp) Method

        private static void EnsureFixedInfo()
        {
            if (!Volatile.Read(ref s_fixedInfoInitialized))
            {
                lock (s_syncObject)
                {
                    if (!s_fixedInfoInitialized)
                    {
                        s_fixedInfo = GetFixedInfo();
                        Volatile.Write(ref s_fixedInfoInitialized, true);
                    }
                }
            }
        }
    }