Add missing call to ConditionVariableCancelSleep().

After calling ConditionVariableSleep() or ConditionVariableTimedSleep()
one or more times, code is supposed to call ConditionVariableCancelSleep()
to remove itself from the waitlist. This code neglected to do so.
As far as I know, that had no observable consequences, but let's make
the code correct.

Discussion: http://postgr.es/m/CA+TgmoYW8eR+KN6zhVH0sin7QH6AvENqw_bkN-bB4yLYKAnsew@mail.gmail.com

diff --git a/src/backend/postmaster/walsummarizer.c b/src/backend/postmaster/walsummarizer.c
index 83c178e766273bdd6ad43e9a30f782082bac3c03..191b360bef4b91cc0513398e25f6cc084c0d4e57 100644 (file)
--- a/src/backend/postmaster/walsummarizer.c
+++ b/src/backend/postmaster/walsummarizer.c
@@ -682,6 +682,8 @@ WaitForWalSummarization(XLogRecPtr lsn, long timeout, XLogRecPtr *pending_lsn)
                                    WAIT_EVENT_WAL_SUMMARY_READY);
    }
 
+   ConditionVariableCancelSleep();
+
    return summarized_lsn;
 }