Re: [Quickfix-developers] Re questing Previous Messages

[Alexis M. <ale...@ya...>]

Karl,
(and anybody else who's listening!)

Have you managed to figure this one out?

I'm having the same issue when accessing the MessageStore from within a call
to fromAdmin().

When I receive a message in fromAdmin(), I look at the MsgType and if it's a
SessionReject (3), I'm attempting to look up the original message so I can
perform further processing on it (e.g. if it was a new order message, create
an order rejected and send back to the OMS etc).

This is throwing a "Runtime Error! R6025 - pure virtual function call"
without fail! However it appears that my MessageStore.get() call returned
successfully - it seems the error happens asynchronously to my calling that
method.

I'm also using the C# wrapper, with a ThreadedSocketInitiator handling
multiple sessions.

Thanks!
Alexis



Karl Schulze-3 wrote:
> 
> QuickFIX Documentation:
> http://www.quickfixengine.org/quickfix/doc/html/index.html
> QuickFIX Support: http://www.quickfixengine.org/services.html
> 
> 
> I am trying to use the store attached to a particular session in order to
> request historical messages by the sequence number. I am running the C#
> wrapper to quickfix and am requesting the previous message with the
> following code:
> 
> int seqNum = (int)lvFixMessages.SelectedItems[0].Tag;
> ArrayList msgList = new ArrayList();
> FixApplication.Session.getStore().get(seqNum, seqNum, msgList);
> if(msgList.Count > 0)
> {
>     QuickFix.Message msg = new Message((string)msgList[0]);
> }
> 
> I may be running into a multi-threaded issue here, as this is called from
> the user interface thread, but I was hoping that read operations were
> threadsafe.
> 
> The problem is characterisitic of multi-threading issues, sometimes it
> works
> just fine. Other times I get an AccessViolationException "Attempted to
> read
> or write protected memory. This is often an indication that other memory
> is
> corrupt."
> 
> Or sometimes I also get "Runtime Error! R6025 - pure virtual function
> call"
> 
> Please let me know if there is a threadsafe way to access the filestore. I
> am using a filestore and a single initiator, with a standard Application.
> 
> Thanks,
> 
> -Karl
> 
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