Hi, folks,

I forgot to attach the context diff against the CVS tree for the threading
changes in the last e-mail, so here they are.

These changes allow me to implement a one request/thread, multiple
request/publisher model in Quixote.  They essentially consist of working
three new functions into the current class definition for Publisher:

--- (default code, included in the patch)

    def set_request(self, request):
        """Called by process_request to set the current connection's request
        object."""
        self._request = request

    def get_request(self):
        """Called by quixote.get_request() to get the request object."""
        return self._request

    def clear_request(self):
        """Called at the end of each try_publish() call.
        Invalidates the publisher's pointer to the current request object.
        """
--

In the current code, I do not clear self._request by setting it to None
in clear_request; I think that doing this is a good idea, but it might
break people's code, so I left this up to the Quixote team.

By overriding these three functions with code to look up the current
request indexed by thread ID, I can successfully run at concurrency levels
of 10-100 (ten to one hundred concurrent threads at a time) within an
existing Quixote application, Cartwheel.

--- (multithreading code in Cartwheel's Publisher class.)

    def set_request(self, request):
        id = thread.get_ident()
        self.request_dict[id] = request

    def get_request(self):
        id = thread.get_ident()
        return self.request_dict[id]

    def clear_request(self):
        id = thread.get_ident()
        if self.request_dict.has_key(id):
            del self.request_dict[id]

---

I'm not sure of how much utility this will be to people currently using
Quixote with Apache/FCGI or Apache/SCGI, neither of which run under this
model.  I run under AOLserver/PyWX, which offers a convenient mod_python
style embedding for Python inside of AOLserver.

I'd be happy to expound on the virtues of this approach or this code if
anyone wants to know about it ;).

cheers,
--titus