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Add function to recover from a malloc() failure. (CVS 2414)

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FossilOrigin-Name: 1f9d10d7965c95d1e35f64cf4c3f128adabd41f2
This commit is contained in:
danielk1977
2005-03-21 04:04:02 +00:00
parent e94ddc9e43
commit 6b456a2b46
12 changed files with 570 additions and 59 deletions
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24
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 1.197 2005/03/21 03:53:38 danielk1977 Exp $
** @(#) $Id: pager.c,v 1.198 2005/03/21 04:04:02 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include "os.h"
@@ -844,6 +844,28 @@ static void pager_reset(Pager *pPager){
assert( pPager->journalOpen==0 );
}
/*
** This function is used to reset the pager after a malloc() failure. This
** doesn't work with in-memory databases. If a malloc() fails when an
** in-memory database is in use it is not possible to recover.
**
** If a transaction or statement transaction is active, it is rolled back.
**
** It is an error to call this function if any pages are in use.
*/
#ifndef SQLITE_OMIT_GLOBALRECOVER
int sqlite3pager_reset(Pager *pPager){
if( pPager ){
if( pPager->nRef || MEMDB ){
return SQLITE_ERROR;
}
pPager->errMask &= ~(PAGER_ERR_MEM);
pager_reset(pPager);
}
return SQLITE_OK;
}
#endif
/*
** When this routine is called, the pager has the journal file open and