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Add "pragma journal_size_limit", used to limit the space consumed by persistent journal files left in the file-system after a transaction has concluded in exclusive (or journal_mode=persist) mode. (CVS 5185)

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FossilOrigin-Name: 5c59f469d0321c6a2e702ca2c61db012f63aeecc
This commit is contained in:
danielk1977
2008-06-04 06:45:59 +00:00
parent 53a4ddf7c4
commit b53e496095
6 changed files with 205 additions and 16 deletions
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25
src/pragma.c
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@@ -11,7 +11,7 @@
*************************************************************************
** This file contains code used to implement the PRAGMA command.
**
** $Id: pragma.c,v 1.177 2008/05/15 17:48:20 danielk1977 Exp $
** $Id: pragma.c,v 1.178 2008/06/04 06:45:59 danielk1977 Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@@ -461,7 +461,7 @@ void sqlite3Pragma(
}
}
if( pId2->n==0 && eMode==PAGER_JOURNALMODE_QUERY ){
/* Simple "PRAGMA persistent_journal;" statement. This is a query for
/* Simple "PRAGMA journal_mode;" statement. This is a query for
** the current default journal mode (which may be different to
** the journal-mode of the main database).
*/
@@ -499,6 +499,27 @@ void sqlite3Pragma(
azModeName[eMode], P4_STATIC);
sqlite3VdbeAddOp2(v, OP_ResultRow, 1, 1);
}else
/*
** PRAGMA [database.]journal_size_limit
** PRAGMA [database.]journal_size_limit=N
**
** Get or set the (boolean) value of the database 'auto-vacuum' parameter.
*/
if( sqlite3StrICmp(zLeft,"journal_size_limit")==0 ){
Pager *pPager = sqlite3BtreePager(pDb->pBt);
i64 iLimit = -2;
if( zRight ){
int iLimit32 = atoi(zRight);
if( iLimit32<-1 ){
iLimit32 = -1;
}
iLimit = iLimit32;
}
iLimit = sqlite3PagerJournalSizeLimit(pPager, iLimit);
returnSingleInt(pParse, "journal_size_limit", (int)iLimit);
}else
#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
/*