From abc3120e9b2055f0934f60ad3e3040db548df8d3 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Tue, 15 Aug 2006 18:26:59 +0000 Subject: Add server support for "plugin" libraries that can be used for add-on tasks such as debugging and performance measurement. This consists of two features: a table of "rendezvous variables" that allows separately-loaded shared libraries to communicate, and a new GUC setting "local_preload_libraries" that allows libraries to be loaded into specific sessions without explicit cooperation from the client application. To make local_preload_libraries as flexible as possible, we do not restrict its use to superusers; instead, it is restricted to load only libraries stored in $libdir/plugins/. The existing LOAD command has also been modified to allow non-superusers to LOAD libraries stored in this directory. This patch also renames the existing GUC variable preload_libraries to shared_preload_libraries (after a suggestion by Simon Riggs) and does some code refactoring in dfmgr.c to improve clarity. Korry Douglas, with a little help from Tom Lane. --- src/backend/tcop/postgres.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'src/backend/tcop/postgres.c') diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c index 9cb61c16cb5..af9578b15ac 100644 --- a/src/backend/tcop/postgres.c +++ b/src/backend/tcop/postgres.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.498 2006/08/13 22:18:08 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/tcop/postgres.c,v 1.499 2006/08/15 18:26:58 tgl Exp $ * * NOTES * this is the "main" module of the postgres backend and @@ -3000,6 +3000,12 @@ PostgresMain(int argc, char *argv[], const char *username) if (IsUnderPostmaster && Log_disconnections) on_proc_exit(log_disconnections, 0); + /* + * process any libraries that should be preloaded at backend start + * (this likewise can't be done until GUC settings are complete) + */ + process_local_preload_libraries(); + /* * Send this backend's cancellation info to the frontend. */ -- cgit v1.2.3