Users of the Timer class may benefit from retrieving the timer deadline after it times out. This is currently not possible as the deadline is reset to 0 when the timer times out or is stopped. Fix this by not resetting the deadline, and adding a new running_ field to the Timer class to implement isRunning(). Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>