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Fix a bug in pager.c introduced in the previous delta. (CVS 227)

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FossilOrigin-Name: f4df6664037c68e1ce539c84c852124d95cd5a56
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drh
2001-06-23 11:36:20 +00:00
parent 8c42ca9366
commit df0b3b090e
3 changed files with 20 additions and 12 deletions
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18
src/pager.c
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@@ -27,7 +27,7 @@
** all writes in order to support rollback. Locking is used to limit
** access to one or more reader or one writer.
**
** @(#) $Id: pager.c,v 1.9 2001/06/22 19:15:00 drh Exp $
** @(#) $Id: pager.c,v 1.10 2001/06/23 11:36:20 drh Exp $
*/
#include "sqliteInt.h"
#include "pager.h"
@@ -562,8 +562,7 @@ Pgno sqlitepager_pagenumber(void *pData){
** currently on the freelist (the reference count is zero) then
** remove it from the freelist.
*/
int sqlitepager_ref(void *pData){
PgHdr *pPg = DATA_TO_PGHDR(pData);
static void page_ref(PgHdr *pPg){
if( pPg->nRef==0 ){
/* The page is currently on the freelist. Remove it. */
if( pPg->pPrevFree ){
@@ -579,6 +578,15 @@ int sqlitepager_ref(void *pData){
pPg->pPager->nRef++;
}
pPg->nRef++;
}
/*
** Increment the reference count for a page. The input pointer is
** a reference to the page data.
*/
int sqlitepager_ref(void *pData){
PgHdr *pPg = DATA_TO_PGHDR(pData);
page_ref(pPg);
return SQLITE_OK;
}
@@ -766,7 +774,7 @@ int sqlitepager_get(Pager *pPager, Pgno pgno, void **ppPage){
}else{
/* The requested page is in the page cache. */
pPager->nHit++;
sqlitepager_ref(pPg);
page_ref(pPg);
}
*ppPage = PGHDR_TO_DATA(pPg);
return SQLITE_OK;
@@ -799,7 +807,7 @@ void *sqlitepager_lookup(Pager *pPager, Pgno pgno){
}
pPg = pager_lookup(pPager, pgno);
if( pPg==0 ) return 0;
sqlitepager_ref(pPg);
page_ref(pPg);
return PGHDR_TO_DATA(pPg);
}