def restore_(self, config):
"""Create a domain as part of the restore process. This is called
only from {@link XendCheckpoint}.
A restore request comes into XendDomain through {@link
#domain_restore} or {@link #domain_restore_fd}. That request is
forwarded immediately to XendCheckpoint which, when it is ready, will
call this method. It is necessary to come through here rather than go
directly to {@link XendDomainInfo.restore} because we need to
serialise the domain creation process, but cannot lock
domain_restore_fd as a whole, otherwise we will deadlock waiting for
the old domain to die.
"""
self.domains_lock.acquire()
try:
dominfo = XendDomainInfo.restore(config)
self._add_domain(dominfo)
return dominfo
finally:
self.domains_lock.release()
