On Tue, Dec 09, 2008 at 12:08:51PM +0000, Daniel P. Berrange wrote:
This series is a work-in-progress set of patches implementing connection cloning. The idea is that if you want to use a connection form multiple threads, you could do
virConnectPtr copy = virConnectClone(conn)
and use 'copy' from the other thread. This avoids the problem of having to make all the virError handling stuff thread-local whic is the blocker for allowing real mutlti-thread access to a single virConnectPtr object.
I believe this cloning support should be sufficient for the Java bindings need to use a thread for its event loop. The idea being that if you wanted to use an event loop in a background thread, you'd create a cloned object for use event loop triggered callbacks like domain events notifications.
I'd still like to do some experiments later making the single virConnectPtr fully thread safe, but that'll take a little more time. I'm hoping this cloning will address the Java needs right now...
Interesting approach, one more possibility of handling things like long-lasting operations, this could be generally useful even beyond just the Java bindings. Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel@veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/