Log Message:
-----------
Rearrange dblink's dblink_build_sql_insert() and related routines to open and
lock the target relation just once per SQL function call. The original coding
obtained and released lock several times per call. Aside from saving a
not-insignificant number of cycles, this eliminates possible race conditions
if someone tries to modify the relation's schema concurrently. Also
centralize locking and permission-checking logic.
Problem noted while investigating a trouble report from Robert Voinea --- his
problem is still to be fixed, though.
Tags:
----
REL8_1_STABLE
Modified Files:
--------------
pgsql/contrib/dblink:
dblink.c (r1.48.2.8 -> r1.48.2.9)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/dblink/dblink.c?r1=1.48.2.8&r2=1.48.2.9)
