On Wednesday 20 January 2010 10:52:24 Simon Riggs wrote: > On Wed, 2010-01-20 at 10:45 +0100, Andres Freund wrote: > > LWLockAcquire > > I'm using spinlocks, not lwlocks. CancelDBBackends which is used in SendRecoveryConflictWithBufferPin which in turn used by CheckStandbyTimeout triggered by SIGALRM acquires the lwlock.
Now that case is a bit less dangerous because you would have to interrupt yourself to trigger a deadlock there because the code sleeps soon after setting up the handler. If ever two SIGALRM occur consecutive there is a problem. Andres -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
