Wt

I have a task scheduler in my Wt application which repeatedly runs the same instances of Wt::Dbo::Query<...> after an interval. It works fine however in the case where connection to the backend(MySQL) is lost and that Wt Dbo reconnects and runs those queries after reconnecting, an uncatchable exception is thrown stating that reentrant queries/statements are not supported.

It is difficult to make a test file since the problem occurs sometimes when it reconnects. In my case it happens when my laptop wakes up from a long hibernation or sleep. However if you have trouble reproducing the error I can write something up.

My suggestion to reproduce is:

1. Create a valid Dbo::Query instance(s)

1. Create a function that is repeatedly called in an interval which runs the query(s) and run the test app (I use WIOService::post)
   
2. Turn off backend
   
3. Break when connection lost is detected by Wt Dbo
   
4. Turn on backend and let Wt Dbo reconnect and run the query again
   
5. I guess it should give you the reentrant access error now