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Provide support for multiplexing SIGUSR1 signal. The upcoming synchronous

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replication patch needs a signal, but we've already used SIGUSR1 and
SIGUSR2 in normal backends. This patch allows reusing SIGUSR1 for that,
and for other purposes too if the need arises.
This commit is contained in:
Heikki Linnakangas
2008-12-09 14:28:20 +00:00
parent 9edd720050
commit 7b05b3fa39
10 changed files with 143 additions and 45 deletions
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4
src/include/storage/sinval.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/storage/sinval.h,v 1.48 2008/06/19 21:32:56 tgl Exp $
* $PostgreSQL: pgsql/src/include/storage/sinval.h,v 1.49 2008/12/09 14:28:20 heikki Exp $
*
*-------------------------------------------------------------------------
*/
@@ -90,7 +90,7 @@ extern void ReceiveSharedInvalidMessages(
void (*resetFunction) (void));
/* signal handler for catchup events (SIGUSR1) */
extern void CatchupInterruptHandler(SIGNAL_ARGS);
extern void HandleCatchupInterrupt(void);
/*
* enable/disable processing of catchup events directly from signal handler.