Re: [libvirt] [PATCH 1/3] Allow use of a private dbus bus connection

On Fri, Oct 11, 2013 at 10:36:37AM -0600, Eric Blake wrote: > On 10/11/2013 09:19 AM, Daniel P. Berrange wrote: >> From: "Daniel P. Berrange" <berrange(a)redhat.com&gt; >> >> The dbus_bus_get() function returns a shared bus connection that >> all libraries in a process can use. You are forbidden from calling >> close on this connection though, since you can never know if any >> other code might be using it. > > Doesn't that mean that multiple calls to dbus_bus_get() return the same > shared bus when possible rather than creating a new one? Thus, how > would you run out of resources if no new bus is created on the second > call? Or is it a case of a new bus per set of different arguments, > where we are consuming lots of shared buses by passing different > arguments every time? The issue is that the call is made in the libvirt_lxc process, and there's one of those per guest. So we have multiple connections.