Commitc0e9b31

committed

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

noticed. Fix SpinlockSemas() to report the correct count consideringthat PG 8.1 adds a spinlock to each shared-buffer header.

1 parent98359c3 commitc0e9b31Copy full SHA for c0e9b31

File tree

-3

lines changed

-3

lines changed

Lines changed: 5 additions & 3 deletions

Original file line number	Diff line number	Diff line change
`@@ -16,12 +16,14 @@`
`16`	`16`	`*`
`17`	`17`	`*`
`18`	`18`	`* IDENTIFICATION`
`19`		`- * $PostgreSQL: pgsql/src/backend/storage/lmgr/spin.c,v 1.20 2006/07/14 14:52:23 momjian Exp $`
	`19`	`+ * $PostgreSQL: pgsql/src/backend/storage/lmgr/spin.c,v 1.21 2006/07/22 21:04:40 tgl Exp $`
`20`	`20`	`*`
`21`	`21`	`*-------------------------------------------------------------------------`
`22`	`22`	`*/`
`23`	`23`	`#include"postgres.h"`
`24`	`24`
	`25`	`+#include"miscadmin.h"`
	`26`	`+#include"storage/lwlock.h"`
`25`	`27`	`#include"storage/spin.h"`
`26`	`28`
`27`	`29`
`@@ -53,9 +55,9 @@ SpinlockSemas(void)`
`53`	`55`	`* similar to the way shmem space estimation is handled.`
`54`	`56`	`*`
`55`	`57`	`* For now, though, we just need a few spinlocks (10 should be plenty)`
`56`		`- * plus one for each LWLock.`
	`58`	`+ * plus one for each LWLock and one for each buffer header.`
`57`	`59`	`*/`
`58`		`-returnNumLWLocks()+10;`
	`60`	`+returnNumLWLocks()+NBuffers+10;`
`59`	`61`	`}`
`60`	`62`
`61`	`63`	`/*`

Comments

(0)