diff options
Diffstat (limited to 'src/backend/storage/ipc/sinvaladt.c')
| -rw-r--r-- | src/backend/storage/ipc/sinvaladt.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/src/backend/storage/ipc/sinvaladt.c b/src/backend/storage/ipc/sinvaladt.c index d05a651097f..35931f00a14 100644 --- a/src/backend/storage/ipc/sinvaladt.c +++ b/src/backend/storage/ipc/sinvaladt.c @@ -8,17 +8,15 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/storage/ipc/sinvaladt.c,v 1.41 2001/09/29 04:02:24 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/storage/ipc/sinvaladt.c,v 1.42 2001/11/04 19:55:31 tgl Exp $ * *------------------------------------------------------------------------- */ #include "postgres.h" -#include <signal.h> -#include <unistd.h> - #include "miscadmin.h" #include "storage/backendid.h" +#include "storage/pmsignal.h" #include "storage/proc.h" #include "storage/sinvaladt.h" @@ -205,11 +203,11 @@ SIInsertDataEntry(SISeg *segP, SharedInvalidationMessage *data) /* * Try to prevent table overflow. When the table is 70% full send a - * SIGUSR2 (ordinarily a NOTIFY signal) to the postmaster, which will - * send it back to all the backends. This will force idle backends to - * execute a transaction to look through pg_listener for NOTIFY - * messages, and as a byproduct of the transaction start they will - * read SI entries. + * WAKEN_CHILDREN request to the postmaster. The postmaster will send + * a SIGUSR2 signal (ordinarily a NOTIFY signal) to all the backends. + * This will force idle backends to execute a transaction to look through + * pg_listener for NOTIFY messages, and as a byproduct of the transaction + * start they will read SI entries. * * This should never happen if all the backends are actively executing * queries, but if a backend is sitting idle then it won't be starting @@ -222,7 +220,7 @@ SIInsertDataEntry(SISeg *segP, SharedInvalidationMessage *data) { if (DebugLvl >= 1) elog(DEBUG, "SIInsertDataEntry: table is 70%% full, signaling postmaster"); - kill(getppid(), SIGUSR2); + SendPostmasterSignal(PMSIGNAL_WAKEN_CHILDREN); } /* |