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Rearrange backend startup sequence so that ShmemIndexLock can become

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an LWLock instead of a spinlock.  This hardly matters on Unix machines
but should improve startup performance on Windows (or any port using
EXEC_BACKEND).  Per previous discussion.
This commit is contained in:
Tom Lane
2006-01-04 21:06:32 +00:00
parent e0078ea22d
commit 349f40b2c2
15 changed files with 414 additions and 259 deletions
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5
src/include/storage/shmem.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/storage/shmem.h,v 1.45 2005/08/20 23:26:35 tgl Exp $
* $PostgreSQL: pgsql/src/include/storage/shmem.h,v 1.46 2006/01/04 21:06:32 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -61,7 +61,8 @@ typedef struct SHM_QUEUE
} SHM_QUEUE;
/* shmem.c */
extern void InitShmemAllocation(void *seghdr, bool init);
extern void InitShmemAccess(void *seghdr);
extern void InitShmemAllocation(void);
extern void *ShmemAlloc(Size size);
extern bool ShmemIsValid(unsigned long addr);
extern void InitShmemIndex(void);