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Avoid parsing the structure of b-tree pages (in sqlite3BtreeInitPage) more than is necessary. (CVS 5720)

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FossilOrigin-Name: 6b998f3066754e219c266501327e5578c9406b63
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danielk1977
2008-09-18 17:34:44 +00:00
parent a4d1f6a83f
commit eaa06f6970
8 changed files with 198 additions and 144 deletions
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11
src/pcache.c
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@@ -11,7 +11,7 @@
*************************************************************************
** This file implements that page cache.
**
** @(#) $Id: pcache.c,v 1.29 2008/09/17 20:06:26 drh Exp $
** @(#) $Id: pcache.c,v 1.30 2008/09/18 17:34:44 danielk1977 Exp $
*/
#include "sqliteInt.h"
@@ -1019,7 +1019,11 @@ void sqlite3PcacheCommit(PCache *pCache, int idJournal){
/*
** Rollback a change previously preserved.
*/
void sqlite3PcacheRollback(PCache *pCache, int idJournal){
void sqlite3PcacheRollback(
PCache *pCache, /* Pager cache */
int idJournal, /* Which copy to rollback to */
void (*xReiniter)(PgHdr*) /* Called on each rolled back page */
){
PgHdr *p;
int sz;
int mask = idJournal==0 ? ~PGHDR_IN_JOURNAL : 0xffffff;
@@ -1030,6 +1034,9 @@ void sqlite3PcacheRollback(PCache *pCache, int idJournal){
memcpy(p->pData, p->apSave[idJournal], sz);
pcacheFree(p->apSave[idJournal]);
p->apSave[idJournal] = 0;
if( xReiniter ){
xReiniter(p);
}
}
p->flags &= mask;
}