On 03/24/2014 06:28 PM, Rajashree Mandaogane wrote: > I need to set a global flag in such a way that only if the flag is on > then my modified code will get executed, so how can I do that?
PostgreSQL is single-threaded, multi-processing. So if you need to set this flag only within a given backend, just make it a global variable. If you want it to be global across all back-ends, you may want a GUC (see the docs & source code). However, IIRC GUC changes aren't visible to all backends immediately. If you need something that's immediately visible, I imagine you'll want a lock or mutex. -- Craig Ringer http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
