namespace AsiaINFO.SMS.APPCMPP2
{
    using System;

    internal class ShareData
    {
        private static int _activeSeq = 0;
        private static int _currentISMG = 1;
        private static uint _seqId = 0;
        private static object _syncActiveSeqObject = new object();
        private static object _syncSeqIDLockObject = new object();

        internal static int ActiveSeq
        {
            get
            {
                lock (_syncActiveSeqObject)
                {
                    return _activeSeq++;
                }
            }
            set
            {
                lock (_syncActiveSeqObject)
                {
                    _activeSeq = value;
                }
            }
        }

        public static int CurrentISMG
        {
            get
            {
                return _currentISMG;
            }
        }

        internal static uint SeqID
        {
            get
            {
                lock (_syncSeqIDLockObject)
                {
                    if ((_seqId + 1) >= uint.MaxValue)
                    {
                        _seqId = 0;
                    }
                    return ++_seqId;
                }
            }
        }
    }
}