Diez was nice enough to give me some advice 17 months ago:
http://groups.google.com/group/turbogears/browse_thread/thread/85214fab89ff39cb/46c066cd3d535337?lnk=gst&q=multiprocessing#46c066cd3d535337
Unfortunately, other priorities came up, but I finally implemented his
advice.
Multiprocessing was pretty easy to get working - I do:
queue = multip.Queue()
proc = multip.Process(target=get_extracts, args=(my_pages, company,
store_num, queue))
proc.start()
bottles = queue.get()
proc.join(30)
and that part works!
But immediately after the join, when I go to use the database again...
I get an error:
Traceback (most recent call last):
File "/home/sam/dev_branch/ve/lib/python2.6/site-packages/cherrypy/
_cprequest.py", line 659, in respond
self.hooks.run('on_end_resource')
File "/home/sam/dev_branch/ve/lib/python2.6/site-packages/cherrypy/
_cprequest.py", line 97, in run
hook()
File "/home/sam/dev_branch/ve/lib/python2.6/site-packages/cherrypy/
_cprequest.py", line 57, in __call__
return self.callback(**self.kwargs)
File "/home/sam/dev_branch/ve/lib/python2.6/site-packages/turbogears/
database.py", line 602, in EndTransactions
end_all()
File "/home/sam/dev_branch/ve/lib/python2.6/site-packages/turbogears/
database.py", line 419, in end_all
hub.end()
File "/home/sam/dev_branch/ve/lib/python2.6/site-packages/turbogears/
database.py", line 322, in end
conn.rollback()
File "/home/sam/dev_branch/ve/lib/python2.6/site-packages/sqlobject/
dbconnection.py", line 754, in rollback
self._connection.rollback()
InterfaceError: connection already closed
Now in the target function get_extracts I had to open a connection to
the database, of course. I tried opening a connection to the database
immediately after the join, but that didn't help any.
Any thoughts?
I'm using TG 1.5, with SQLObject and Postgres running under Linux.
Thanks
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