Ping. Am Dienstag 13 Juli 2010 10:54:26 schrieb Philipp Hahn:

When the last callback is removed using domainEventDeregister(), the events dispatcher is deregistered from the C-library, but domainEventsCallbacks is still an empty list. On shutdown __del__() deregisters the dispatacher again, which SEGVs

# You need the event-loop implementation from the Python examples; # give the file a name which is importable by Python. ln examples/domain-events/events-python/event-test.py eloop.py python -c 'from eloop import * import sys

def dump(*args): print " ".join(map(str, args))

virEventLoopPureStart() c = libvirt.open("xen:///") c.domainEventRegister(dump, None) c.domainEventDeregister(dump) sys.exit(0)'

domainEventDeregister() needs to delete domainEventCallbacks so subsequent calls to __del__() and domainEventRegister() choose the right code paths. Setting it to None is not enough, since calling domainEventRegiser() again would trigger an TypeError.

Signed-off-by: Philipp Hahn <hahn@univention.de> --- python/libvirt-override-virConnect.py | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)

-- Philipp Hahn Open Source Software Engineer hahn@univention.de Univention GmbH Linux for Your Business fon: +49 421 22 232- 0 Mary-Somerville-Str.1 28359 Bremen fax: +49 421 22 232-99 http://www.univention.de