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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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3
src/backend/access/transam/twophase.c
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/transam/twophase.c,v 1.48 2008/11/19 10:34:50 heikki Exp $
* $PostgreSQL: pgsql/src/backend/access/transam/twophase.c,v 1.49 2008/12/09 14:28:20 heikki Exp $
*
* NOTES
* Each global transaction is associated with a global transaction
@ -287,6 +287,7 @@ MarkAsPreparing(TransactionId xid, const char *gid,
gxact->proc.databaseId = databaseid;
gxact->proc.roleId = owner;
gxact->proc.inCommit = false;
MemSet(gxact->proc.signalFlags, 0, NUM_PROCSIGNALS * sizeof(sig_atomic_t));
gxact->proc.vacuumFlags = 0;
gxact->proc.lwWaiting = false;
gxact->proc.lwExclusive = false;