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Btree checks the autovacuum flag after locking the database file. (CVS 2341)

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FossilOrigin-Name: 6610188f09d08c65c46a140685b403aa74f71a19
This commit is contained in:
drh
2005-02-15 16:23:02 +00:00
parent 39171f390d
commit 057cd3a0aa
3 changed files with 14 additions and 30 deletions
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30
src/btree.c
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@@ -9,7 +9,7 @@
** May you share freely, never taking more than you give.
**
*************************************************************************
** $Id: btree.c,v 1.247 2005/02/12 08:59:56 danielk1977 Exp $
** $Id: btree.c,v 1.248 2005/02/15 16:23:02 drh Exp $
**
** This file implements a external (disk-based) database using BTrees.
** For a detailed discussion of BTrees, refer to
@@ -304,6 +304,9 @@ struct Btree {
u8 minEmbedFrac; /* Minimum payload as % of total page size */
u8 minLeafFrac; /* Minimum leaf payload as % of total page size */
u8 pageSizeFixed; /* True if the page size can no longer be changed */
#ifndef SQLITE_OMIT_AUTOVACUUM
u8 autoVacuum; /* True if database supports auto-vacuum */
#endif
u16 pageSize; /* Total number of bytes on a page */
u16 psAligned; /* pageSize rounded up to a multiple of 8 */
u16 usableSize; /* Number of usable bytes on each page */
@@ -311,9 +314,6 @@ struct Btree {
int minLocal; /* Minimum local payload in non-LEAFDATA tables */
int maxLeaf; /* Maximum local payload in a LEAFDATA table */
int minLeaf; /* Minimum local payload in a LEAFDATA table */
#ifndef SQLITE_OMIT_AUTOVACUUM
u8 autoVacuum; /* True if database supports auto-vacuum */
#endif
};
typedef Btree Bt;
@@ -1444,6 +1444,9 @@ static int lockBtree(Btree *pBt){
pBt->maxEmbedFrac = page1[21];
pBt->minEmbedFrac = page1[22];
pBt->minLeafFrac = page1[23];
#ifndef SQLITE_OMIT_AUTOVACUUM
pBt->autoVacuum = (get4byte(&page1[36 + 4*4])?1:0);
#endif
}
/* maxLocal is the maximum amount of payload to store locally for
@@ -1926,25 +1929,6 @@ static int countWriteCursors(Btree *pBt){
}
#endif
#if 0
/*
** Invalidate all cursors
*/
static void invalidateCursors(Btree *pBt){
BtCursor *pCur;
for(pCur=pBt->pCursor; pCur; pCur=pCur->pNext){
MemPage *pPage = pCur->pPage;
if( pPage /* && !pPage->isInit */ ){
pageIntegrity(pPage);
releasePage(pPage);
pCur->pPage = 0;
pCur->isValid = 0;
pCur->status = SQLITE_ABORT;
}
}
}
#endif
#ifdef SQLITE_TEST
/*
** Print debugging information about all cursors to standard output.