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Improve cache invalidation handling. Eespecially

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this would fix TODO
* elog() flushes cache, try invalidating just entries from
  current xact, perhaps using invalidation cache
This commit is contained in:
Hiroshi Inoue
2000-01-10 06:30:56 +00:00
parent 5770935965
commit 0f2e7948e2
5 changed files with 476 additions and 51 deletions
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29
src/backend/access/transam/xact.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/access/transam/xact.c,v 1.57 2000/01/05 18:23:44 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/access/transam/xact.c,v 1.58 2000/01/10 06:30:50 inoue Exp $
*
* NOTES
* Transaction aborts can now occur two ways:
@ -165,6 +165,7 @@ static void AtAbort_Cache(void);
static void AtAbort_Locks(void);
static void AtAbort_Memory(void);
static void AtCommit_Cache(void);
static void AtCommit_LocalCache(void);
static void AtCommit_Locks(void);
static void AtCommit_Memory(void);
static void AtStart_Cache(void);
@ -512,8 +513,11 @@ CommandCounterIncrement()
CurrentTransactionStateData.scanCommandId = CurrentTransactionStateData.commandId;
/* make cache changes visible to me */
AtCommit_Cache();
/*
* make cache changes visible to me. AtCommit_LocalCache()
* instead of AtCommit_Cache() is called here.
*/
AtCommit_LocalCache();
AtStart_Cache();
}
@ -663,15 +667,26 @@ static void
AtCommit_Cache()
{
/* ----------------
* Make catalog changes visible to me for the next command.
* Other backends will not process my invalidation messages until
* after I commit and free my locks--though they will do
* unnecessary work if I abort.
* Make catalog changes visible to all backend.
* ----------------
*/
RegisterInvalid(true);
}
/* --------------------------------
* AtCommit_LocalCache
* --------------------------------
*/
static void
AtCommit_LocalCache()
{
/* ----------------
* Make catalog changes visible to me for the next command.
* ----------------
*/
ImmediateLocalInvalidation(true);
}
/* --------------------------------
* AtCommit_Locks
* --------------------------------