postgresql/contrib/uuid-ossp
Tom Lane b2f6754d21 When using the OSSP UUID library, cache its uuid_t state object.
The original coding in contrib/uuid-ossp created and destroyed a uuid_t
object (or, in some cases, even two of them) each time it was called.
This is not the intended usage: you're supposed to keep the uuid_t object
around so that the library can cache its state across uses.  (Other UUID
libraries seem to keep equivalent state behind-the-scenes in static
variables, but OSSP chose differently.)  Aside from being quite inefficient,
creating a new uuid_t loses knowledge of the previously generated UUID,
which in theory could result in duplicate V1-style UUIDs being created
on sufficiently fast machines.

On at least some platforms, creating a new uuid_t also draws some entropy
from /dev/urandom, leaving less for the rest of the system.  This seems
sufficiently unpleasant to justify back-patching this change.
2014-05-29 13:51:15 -04:00
..
.gitignore Add missing gitignore file 2011-05-02 01:03:38 +03:00
Makefile
uninstall_uuid-ossp.sql
uuid-ossp.c When using the OSSP UUID library, cache its uuid_t state object. 2014-05-29 13:51:15 -04:00
uuid-ossp.sql.in