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Hmm, seems --disable-spinlocks has been broken for awhile and nobody

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noticed.  Fix SpinlockSemas() to report the correct count considering
that PG 8.1 adds a spinlock to each shared-buffer header.
This commit is contained in:
Tom Lane 2006-07-22 21:04:40 +00:00
parent 98359c3e3f
commit c0e9b3139f
1 changed files with 5 additions and 3 deletions
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8
src/backend/storage/lmgr/spin.c
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@ -16,12 +16,14 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/lmgr/spin.c,v 1.20 2006/07/14 14:52:23 momjian Exp $ * $PostgreSQL: pgsql/src/backend/storage/lmgr/spin.c,v 1.21 2006/07/22 21:04:40 tgl Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
#include "postgres.h" #include "postgres.h"
#include "miscadmin.h"
#include "storage/lwlock.h"
#include "storage/spin.h" #include "storage/spin.h"
@ -53,9 +55,9 @@ SpinlockSemas(void)
* similar to the way shmem space estimation is handled. * similar to the way shmem space estimation is handled.
* *
* For now, though, we just need a few spinlocks (10 should be plenty) * For now, though, we just need a few spinlocks (10 should be plenty)
* plus one for each LWLock. * plus one for each LWLock and one for each buffer header.
*/ */
return NumLWLocks() + 10; return NumLWLocks() + NBuffers + 10;
} }
/* /*