Question

我想知道是否有人帮助我处理下一个错误。

我有一个app -windows服务，由一个计时器调用一些函数来操作数据库（linq2sql）。

大约在3-5次调用后，我总是收到下一个错误“线程被中止”。在下一个源代码中

 var ctx= new myLinq2SqlDataContext();
 var res = ctx.SomeData.Where();

我不使用多线程！我在调用函数时使用lock语句来处理数据库。我只有一项服务与上下文一起使用。

这是我的代码段

public partial class DataService : ServiceBase
    {
         private static object timerProcessLockObject = new object();
         static object _receiverTimerLockObject = new object();

         void OnStart()
         {
            if (_receiverTimer == null)
            {
                lock (_receiverTimerLockObject)
                {
                    if (_receiverTimer == null)
                    {                      
                        _receiverTimer = new Timer(new TimerCallback(ReceiverTimer_TimerCallback), null, 0, 60000);    
                     }
                 }

            }
         }

         private void ReceiverTimer_TimerCallback(object state)
         {       
            lock (timerProcessLockObject)
            {   
                  var receiveService = new ReceiverService();
                  receiveService.GetData();
             }
          }    
    }

    [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)]
    public class ReceiverService : IReceiverService
    {      
        public void GetData()
        {          
            IDataControler myController = new DataControler();
            myController.GetData();           
        }           
    }

    public class DataControler : IDataControler
    {      
        public void GetData()
        {                
            IMyDomainService myDomainService = new MyDomainService();
            myDomainService.SomeFunc();          

            IMyExtraDomainService myExtraService = new MyExtraDomainService();
            var data = myExtraService.SomeFuns();

            var convertedData = ConvertData(data);
            myDomainService.SaveData(convertedData);

            DBConnection newConnection = new DBConnection();
            myDomainService.AddNewConnection(newConnection);           
        }    
     }

    public class MyExtraDomainService : IMyExtraDomainService
    {   
        public IList<Entity> SomeFuns()
        {
            try
            {             
                var myCtx = new MyLinq2SqlDataContext();         //!!!! Here I receive error
                return myCtx.SomeEntities.Where(...).ToList();
            }   
            catch (Exception exc)
            {              
                throw;
            }            
        }
    }

已更新

这是堆栈跟踪

at SNIReadSync(SNI_Conn* , SNI_Packet** , Int32 )
   at SNINativeMethodWrapper.SNIReadSync(SafeHandle pConn, IntPtr& packet, Int32 timeout)
   at System.Data.SqlClient.TdsParserStateObject.ReadSni(DbAsyncResult asyncResult, TdsParserStateObject stateObj)
   at System.Data.SqlClient.TdsParserStateObject.ReadNetworkPacket()
   at System.Data.SqlClient.TdsParserStateObject.ReadBuffer()
   at System.Data.SqlClient.TdsParserStateObject.ReadByte()
   at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
   at System.Data.SqlClient.SqlDataReader.ConsumeMetaData()
   at System.Data.SqlClient.SqlDataReader.get_MetaData()
   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
   at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result)
   at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method)
   at System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method)
   at System.Data.SqlClient.SqlCommand.ExecuteDbDataReader(CommandBehavior behavior)
   at System.Data.Common.DbCommand.ExecuteReader()
   at System.Data.Linq.SqlClient.SqlProvider.Execute(Expression query, QueryInfo queryInfo, IObjectReaderFactory factory, Object[] parentArgs, Object[] userArgs, ICompiledSubQuery[] subQueries, Object lastResult)
   at System.Data.Linq.SqlClient.SqlProvider.ExecuteAll(Expression query, QueryInfo[] queryInfos, IObjectReaderFactory factory, Object[] userArguments, ICompiledSubQuery[] subQueries)
   at System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query)
   at System.Data.Linq.DataQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator()
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)                                                                                       at MY FUNCTION call

是什么原因？提前致谢！

威胁已经被清除了

0 个答案: