diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 1999-02-19 06:06:39 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 1999-02-19 06:06:39 +0000 |
| commit | e77b630cf0c1501008b3b72b5621f2951ef82b71 (patch) | |
| tree | 6b25afa56af95f41ced9eab5e56f12eb58f03d7b /src/include/storage/sinvaladt.h | |
| parent | 612b8434e40edc299e38bd6e4d7ac07183513118 (diff) | |
| download | postgresql-e77b630cf0c1501008b3b72b5621f2951ef82b71.tar.gz | |
Allow maximum number of backends to be set at configure time
(--with-maxbackends). Add a postmaster switch (-N backends) that allows
the limit to be reduced at postmaster start time. (You can't increase it,
sorry to say, because there are still some fixed-size arrays.)
Grab the number of semaphores indicated by min(MAXBACKENDS, -N) at
postmaster startup, so that this particular form of bogus configuration
is exposed immediately rather than under heavy load.
Diffstat (limited to 'src/include/storage/sinvaladt.h')
| -rw-r--r-- | src/include/storage/sinvaladt.h | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/src/include/storage/sinvaladt.h b/src/include/storage/sinvaladt.h index 161e288696..522eb5e220 100644 --- a/src/include/storage/sinvaladt.h +++ b/src/include/storage/sinvaladt.h @@ -6,7 +6,7 @@ * * Copyright (c) 1994, Regents of the University of California * - * $Id: sinvaladt.h,v 1.11 1999/02/13 23:22:10 momjian Exp $ + * $Id: sinvaladt.h,v 1.12 1999/02/19 06:06:39 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -31,7 +31,7 @@ A------------- Header info -------------- endEntryChain (offset relative to B) numEntries maxNumEntries - procState[MaxBackendId] --> limit + procState[MAXBACKENDS] --> limit resetState (bool) a tag (POSTID) B------------- Start entry section ------- @@ -44,7 +44,6 @@ C----------------End shared segment ------- */ /* Parameters (configurable) *******************************************/ -#define MaxBackendId 64 /* maximum number of backends */ #define MAXNUMMESSAGES 4000 /* maximum number of messages in seg */ @@ -71,7 +70,7 @@ typedef struct SISeg Offset endEntryChain; /* (offset relative to B) */ int numEntries; int maxNumEntries; - ProcState procState[MaxBackendId]; /* reflects the + ProcState procState[MAXBACKENDS]; /* reflects the * invalidation state */ /* here starts the entry section, controlled by offsets */ } SISeg; |