CK.OpenSession(): Do not block on run-seat.d scripts?

[Martin Pitt <martin.pitt@ubuntu.com>]

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Hello William,

I am currently investigating boot speed improvements, and one
particular item is that gdm hangs half a second in
ConsoleKit.OpenSession(). The reason is that it synchronously calls
all run-seat.d/* scripts, which includes udev-acl.ck.

I'm working on speeding up udev-acl.ck, but I need to discuss that
with Kay Sievers first.

However, I wondered why it is synchronous in the first place: The
hooks are called with a couple of environment variables, but CK does
not read any kind of result from them. In other words, the scripts
can't influence session properties, nor abort the creation of a
session.

Is there a particular reason for CK to wait on all the hooks? If not,
I'm happy to work on a patch to call those in the background. The only
thing to watch out for, as far as I can see, is that a call to the
hooks must not overlap with the next seat change, so this requires
some locking.

Thank you, and Merry Christmas,

Martin

-- 
Martin Pitt                        | http://www.piware.de
Ubuntu Developer (www.ubuntu.com)  | Debian Developer  (www.debian.org)

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