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Avoid creating a TEMP database unless it is absolutely necessary. (CVS 1890)

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FossilOrigin-Name: 5914a11caa4c6e778cd7ca010427897c8f971552
This commit is contained in:
drh
2004-08-18 02:10:15 +00:00
parent 181fc99332
commit dc3ff9c34c
7 changed files with 63 additions and 56 deletions
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9
src/pager.c
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@@ -18,7 +18,7 @@
** file simultaneously, or one process from reading the database while
** another is writing.
**
** @(#) $Id: pager.c,v 1.154 2004/08/07 23:54:48 drh Exp $
** @(#) $Id: pager.c,v 1.155 2004/08/18 02:10:15 drh Exp $
*/
#include "os.h" /* Must be first to enable large file support */
#include "sqliteInt.h"
@@ -1659,9 +1659,7 @@ static void memoryTruncate(Pager *pPager){
*/
int sqlite3pager_truncate(Pager *pPager, Pgno nPage){
int rc;
if( pPager->dbSize<0 ){
sqlite3pager_pagecount(pPager);
}
sqlite3pager_pagecount(pPager);
if( pPager->errMask!=0 ){
rc = pager_errcode(pPager);
return rc;
@@ -2211,7 +2209,7 @@ int sqlite3pager_get(Pager *pPager, Pgno pgno, void **ppPage){
if( pPager->nExtra>0 ){
memset(PGHDR_TO_EXTRA(pPg, pPager), 0, pPager->nExtra);
}
if( pPager->dbSize<0 ) sqlite3pager_pagecount(pPager);
sqlite3pager_pagecount(pPager);
if( pPager->errMask!=0 ){
sqlite3pager_unref(PGHDR_TO_DATA(pPg));
rc = pager_errcode(pPager);
@@ -2917,6 +2915,7 @@ int sqlite3pager_stmt_begin(Pager *pPager){
int rc;
char zTemp[SQLITE_TEMPNAME_SIZE];
assert( !pPager->stmtInUse );
assert( pPager->dbSize>=0 );
TRACE2("STMT-BEGIN %d\n", pPager->fd.h);
if( pPager->memDb ){
pPager->stmtInUse = 1;