I respond to myself to the first part of my question. If you want to synchronize in the cgroup creation to complete just >> wait for the JobRemoved bus signal for the job returned by >> StartTransientUnit(). >> >> > StartTransientUnit returns a string to a job object path. To call > JobRemoved I need the job id, so the easier way to get it is to strip the > last part of the returned string from StartTransientUnit job object path. > Am I right? > > False, the JobRemoved signal returns the id, job, unit and result. To wait for JobRemoved only needs a matching rule for this signal. The matching rule can just contain the path. In fact, nothing else than strings can be matched in a rule, so I may be only able to use the path.
>