Am 01.09.2015 um 16:18 hat Programmingkid geschrieben: > > On Sep 1, 2015, at 8:34 AM, Kevin Wolf wrote: > > > Am 27.08.2015 um 14:32 hat Jeff Cody geschrieben: > >> I'm not married to the ID generation scheme I proposed. > >> > >> What I am trying to do, however, is have a technical discussion on > >> generating an ID in a well-formed manner. And hopefully, in a way > >> that is useful to all interested subsystems, if possible. > >> > >> Do you disagree with the requirements I listed above? If so, it would > >> be useful to begin the discussion around that. For ease of > >> discussion, I'll list them again: > >> > >> * Reserved namespaces > >> * Uniqueness > >> * Non-predictable (to avoid inadvertently creating a de facto ABI) > >> > >> > >> . . . > >> > >> On the generation scheme proposed above: > >> > >> I understand that something you desire is an ID that is easier to > >> type. > >> > >> If we wanted to make it shorter, perhaps we could have the number > >> counter be variable length: > >> > >> qemu#ss#D#XY > >> | | | | > >> qemu reserved - | | | > >> | | | > >> subsystem name ---| | | > >> | | > >> counter --------| | > >> | > >> 2-digit random ---| > > > > Even with keeping all of the information in there we can shorten the ID > > a bit more: # at the start is enough to mark it as autogenerated, the > > subsystem seems nice to have in there anyway, and the # separators can > > be removed without making the ID less unique (assuming that subsystems > > never end in a digit). This results in an ID that looks like a three (or > > more) digit number for the subsystem, where the last two digits are > > random, like this: > > > > #block150 > > #block219 > > #block344 > > ... > > > > That seems easy to type and still fulfills all of the criteria. > > > > Kevin > > I do know that some really want an indicator that shows that an ID is > auto-generated. But we could still do this and keep the ID short. What if the > auto-generated ID just started with a character the user could never use at > the beginning of the ID. I suggest we use an underscore to indicate > machine-generated ID's. Something like this _1. It is very simple and > effective.
That's what I already did. # is a reserved character. I don't think something like #block150 is unreasonably long, it's a bit more descriptive than _1, and it fulfills all of Jeff's criteria, which _1 clearly doesn't. Kevin