postgres

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Files

Robert Haas bf740ce9e5 Fix status reporting for terminated bgworkers that were never started.

Previously, GetBackgroundWorkerPid() would return BGWH_NOT_YET_STARTED
if the slot used for the worker registration had not been reused by
unrelated activity, and BGWH_STOPPED if it had.  Either way, a process
that had requested notification when the state of one of its
background workers changed did not receive such notifications.  Fix
things so that GetBackgroundWorkerPid() always returns BGWH_STOPPED in
this situation, so that we do not erroneously give waiters the
impression that the worker will eventually be started; and send
notifications just as we would if the process terminated after having
been started, so that it's possible to wait for the postmaster to
process a worker termination request without polling.

Discovered by Amit Kapila during testing of parallel sequential scan.
Analysis and fix by me.  Back-patch to 9.4; there may not be anyone
relying on this interface yet, but if anyone is, the new behavior is a
clear improvement.

2015-03-19 11:04:09 -04:00

autovacuum.c

Rationalize vacuuming options and parameters

2015-03-18 11:52:33 -03:00

bgworker.c

Fix status reporting for terminated bgworkers that were never started.

2015-03-19 11:04:09 -04:00

bgwriter.c

Add a default local latch for use in signal handlers.

2015-01-14 18:45:22 +01:00

checkpointer.c

Replace checkpoint_segments with min_wal_size and max_wal_size.