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Latest revisions

# Date Author Comment
e623dbe3 10/01/2009 08:37 pm Guido Trotter

Master candidate stats, return one more value

Other than returning the current number of candidates, and the number of
desired and possible candidates, we also return the maximum possible
number, even if greater than our desires. All callers for now ignore...

34cb5617 10/01/2009 07:47 pm Guido Trotter

SingleActionPipeCondition =~ s/Action/Notify/

With this patch we simplify usage on the SingleActionCondition (which
wasn't a condition at all) by making it a real condition. This way we
can just wait() on it, or notifyAll() as we would on a normal one. The...

2419060d 10/01/2009 07:45 pm Guido Trotter

Abstract "base" condition code in a separate class

Each condition has an underlying lock, the acquire and release methods,
and a few helper methods to check that it's called in the proper way.

Abstract them to a separate class so we can have more than one without...

a66bd91b 10/01/2009 07:35 pm Michael Hanselmann

locking.SharedLock: Fix bug in delete function

SharedLock.__acquire_unlocked uses keyword parameters. Just passing
the timeout would set the “shared” parameter.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>

5e0a6daf 10/01/2009 07:17 pm Michael Hanselmann

Rename LockSet.acquire parameter “blocking” to “timeout”

Also remove the “blocking” parameter from LockSet.remove and
GanetiLockManager.remove. There's no point in implementing timeouts on removal
unless we need them.

Signed-off-by: Michael Hanselmann <>...

c6997f21 09/30/2009 06:35 pm Michael Hanselmann

Change SharedLock to new pipe(2)-based condition

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Guido Trotter <>

48dabc6a 09/30/2009 06:34 pm Michael Hanselmann

Add _PipeCondition class

_PipeCondition is a condition implemented using pipe(2) and poll(2).
It allows the implementation of timeouts without using a busy-wait loop
with time.sleep.

Unlike Python's built-in threading.Condition class and to save file
descriptors and an internal queue, it can only be used to notify...

d76167a5 09/30/2009 06:34 pm Michael Hanselmann

Add _SingleActionPipeCondition class

This class will be used as a basic block for pipe(2)-based
conditions. Upon initialization it creates a pipe and can be
notified once (hence the “single action” in the name). A
callable helper class is used to wait for notifications....

84e344d4 09/30/2009 06:33 pm Michael Hanselmann

SharedLock: implement timeouts

This patch greatly simplifies the SharedLock code and implements
timeouts for the acquire() and delete() functions. A wrapper around
Python's threading.Condition class must be used to ensure thread
safety when check whether there are any waiters left....

23824641 09/30/2009 05:49 pm Luca Bigliardi

Extend confd instances ips query

The query now accepts a link parameter.

Signed-off-by: Luca Bigliardi <>
Reviewed-by: Guido Trotter <>

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