Re: elog(FATAL) vs shared memory

Mark Shuttleworth wrote:
> Tom Lane wrote:
>> (1) something (still not sure what --- Martin and Mark, I'd really like
>> to know) was issuing random SIGTERMs to various postgres processes
>> including autovacuum.
>>
>
> This may be a misfeature in our test harness - I'll ask Stuart Bishop to
> comment.

After a test is run, the test harness kills any outstanding connections so
we can drop the test database. Without this, a failing test could leave open
connections dangling causing the drop database to block.

CREATE OR REPLACE FUNCTION _killall_backends(text)
RETURNS Boolean AS $$   import os   from signal import SIGTERM
   plan = plpy.prepare(       "SELECT procpid FROM pg_stat_activity WHERE datname=$1", ['text']       )   success =
True  for row in plpy.execute(plan, args):       try:           plpy.info("Killing %d" % row['procpid'])
os.kill(row['procpid'],SIGTERM)       except OSError:           success = False 
   return success
$$ LANGUAGE plpythonu;

--
Stuart Bishop <stuart.bishop@canonical.com>   http://www.canonical.com/
Canonical Ltd.                                http://www.ubuntu.com/