Bruce Momjian wrote: > > > When we get the termination signal, why can't we just set a global > > > boolean, do a query cancel, and in the setjmp() code block check the > > > global and exit --- at that stage we know we have released all locks and > > > can exit cleanly. > > > > I have implemented this idea with the attached patch. > > One problem I have with my patch is that SIGTERM is currently used by > the postmaster to shut down backends. Now because the postmaster knows > that all backend are terminating, it can accept a dirtier shutdown than > one where we are terminating just one backend and the rest are going to > keep running. The new SIGTERM coding is going to exit a backend only in > a place where cancel is checked.
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I have a idea --- to have pg_terminate_backend() set a PGPROC boolean and then send a query cancel signal to the backend --- the backend can then check the boolean and exit if required. I will work on a new version of this patch tomorrow/Monday. -- Bruce Momjian <[EMAIL PROTECTED]> http://momjian.us EnterpriseDB http://enterprisedb.com + If your life is a hard drive, Christ can be your backup. + -- Sent via pgsql-patches mailing list (pgsql-patches@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-patches
