RFC 4122 UUID

maxter Joined: 05/17/06 Posts: 16

Posted: 03/14/07 18:00:49 I've been implementing a cross platform UUID type/generators according to RFC 4122. Is anyone doing something similar for a future release of tango? PS. Sorry if it's the wrong NG for the question.

Author	Message
kris Joined: 03/27/04 Posts: 581	Posted: 03/15/07 05:39:10 I don't know of one being written at this time; sounds like something useful - Arrr! We'll all be walkin' the Plank! -
maxter Joined: 05/17/06 Posts: 16	Posted: 03/15/07 11:28:25 The type with conversion functions and version 3-5 generators are done. I hope to come up with some code by the end of the week.
masilver Joined: 01/29/08 Posts: 1	Posted: 01/29/08 08:29:55 Did you ever finish the implementation?
maxter Joined: 05/17/06 Posts: 16	Posted: 01/29/08 09:45:30 Work in progress. There will be a notification when it's done.
kris Joined: 03/27/04 Posts: 581	Posted: 02/17/08 07:18:03 Yay \o/
maxter Joined: 05/17/06 Posts: 16	Posted: 03/26/08 07:13:07 The implementation is almost complete. Works on Windows and linux and may work on FreeBSD and Mac OS The time-based generator is pretty close to what I've expected. It is compliant with the standard and not much slower than linux's libuuid. I couldn't figure out (and don't care, honestly) how Windows time-based gen happens to be faster than the time itself. Their gen seems to generate more than 10 million UUIDs per second while the standard requires there is no more than 1 uuid per 100 ns. Anyway, imo, the time-based implementation is too heavy for the library because it relies on interprocess communication functionality in the ipc package. I think, the UUID structure itself, an interface to the gen provided by the platform, name-based gen and random gen will suffice. I propose for inclusion under a uuid package: Uuid.d - the UUID struct with utility functions. NativeUuidGen?.d - calls platform's UUID gen (requires additional libs - libuuid.a/rpcrt4.lib). Could be merged into Uuid.d NameUuidGen?.d - for hashing arbitrary stuff into UUIDs. Uses SHA1 and MD5 packages. RandomUuidGen?.d - fast and silly gen using a randomizer. The Uuid part in gen names may be omitted because it's a sore. Give your comments please.
maxter Joined: 05/17/06 Posts: 16	Posted: 03/26/08 15:32:11 I can imagine applications where people would want the UUID struct just to convert a UUID string to the structure and vice versa. It would be unfair to make them link in the additional libraries. Thus, the Uuid.d and NativeUuidGen?.d should be separate modules.