[Aust-NZ] exception OSGeo.MapServer ... at OSGeo.MapServer.mapscriptPINVOKE.new_mapObj(System.String)

[Mark Sharman]

To whom it may concern,

 

I am experiencing a number of intermittent exceptions in an application that
generates mapping tiles. Generally the system runs very well .. occasionally
we get exceptions the one below and a memory violation (sorry don't remember
that precisely). It's a bit weird. The system is multi-threading 32bit
windows based. If someone can assist it would great.

 

I am using version 5.6.3 of Mapserver 

 

The call:

 

        Dim mapname As String = _mbr.MapFilePath + "\" +
_mbr.Zoom.ToString().PadLeft(2, Convert.ToChar("0")) & ".map"

        Dim MSMap As mapObj = Nothing

 

        Try

            MSMap = New mapObj(mapname)

        Catch ex As Exception

            _logger.Error(ex)

            ' this will be caught by the caller

            Throw ex

            'Return False

        End Try

 

 

Sorry this is all I have, for some reason the log4net Error(exception) call
is not writing to the log file:

 

Event Type:       Error

Event Source:    .NET Runtime

Event Category: None

Event ID:           1026

Date:                6/05/2011

Time:                2:25:40 PM

User:                N/A

Computer:         MDS-TILEGEN03

Description:

Application: TileGenV2MSConsole.exe

Framework Version: v4.0.30319

Description: The process was terminated due to an unhandled exception.

Exception Info: System.AccessViolationException

Stack:

   at OSGeo.MapServer.mapscriptPINVOKE.new_mapObj(System.String)

   at OSGeo.MapServer.mapObj..ctor(System.String)

   at
TileGenAssembly.MapServerRenderer.ProcessMBRRow(TileGenAssembly.Configuratio
nDataContext, System.Object ByRef, System.DateTime, Int64 ByRef, Int64
ByRef, Int64 ByRef)

   at TileGenAssembly.MapServerRenderer.GenerateTilesFromMBR(Int32)

   at TileGenAssembly.MapServerGenerateThread.Start()

   at System.Threading.ThreadHelper.ThreadStart_Context(System.Object)

   at
System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext,
System.Threading.ContextCallback, System.Object, Boolean)

   at
System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext,
System.Threading.ContextCallback, System.Object)

   at System.Threading.ThreadHelper.ThreadStart()

 

Regards

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