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Cancel running query if it is detected that the connection to the client is

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lost. The only way we detect that at the moment is when write() fails when
we try to write to the socket.

Florian Pflug with small changes by me, reviewed by Greg Jaskiewicz.
This commit is contained in:
Heikki Linnakangas
2011-12-09 11:37:21 +02:00
parent d5f23af6bf
commit 5d8a894e30
4 changed files with 25 additions and 1 deletions
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12
src/backend/tcop/postgres.c
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@ -2823,6 +2823,18 @@ ProcessInterrupts(void)
(errcode(ERRCODE_ADMIN_SHUTDOWN),
errmsg("terminating connection due to administrator command")));
}
if (ClientConnectionLost)
{
QueryCancelPending = false; /* lost connection trumps QueryCancel */
ImmediateInterruptOK = false; /* not idle anymore */
DisableNotifyInterrupt();
DisableCatchupInterrupt();
/* don't send to client, we already know the connection to be dead. */
whereToSendOutput = DestNone;
ereport(FATAL,
(errcode(ERRCODE_CONNECTION_FAILURE),
errmsg("connection to client lost")));
}
if (QueryCancelPending)
{
QueryCancelPending = false;