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Change incremental vacuum to be triggered by a pragma rather than a command.

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We have a lot to learn about this yet and we do not want to paint ourselves
into a corner by commiting to specific syntax too early. (CVS 3921)

FossilOrigin-Name: b13e497a326697ab42b429993a1eee7df3c0c3eb
This commit is contained in:
drh
2007-05-04 18:30:40 +00:00
parent 744f2f4658
commit ca5557f91d
11 changed files with 123 additions and 82 deletions
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23
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 1.133 2007/04/26 14:42:36 danielk1977 Exp $
** $Id: pragma.c,v 1.134 2007/05/04 18:30:41 drh Exp $
*/
#include "sqliteInt.h"
#include "os.h"
@@ -414,6 +414,27 @@ void sqlite3Pragma(
}else
#endif
/*
** PRAGMA [database.]incremental_vacuum(N)
**
** Do N steps of incremental vacuuming on a database.
*/
#ifndef SQLITE_OMIT_AUTOVACUUM
if( sqlite3StrICmp(zLeft,"incremental_vacuum")==0 ){
int iLimit, addr;
if( zRight==0 || !sqlite3GetInt32(zRight, &iLimit) || iLimit<=0 ){
iLimit = 0x7fffffff;
}
sqlite3BeginWriteOperation(pParse, 0, iDb);
sqlite3VdbeAddOp(v, OP_MemInt, iLimit, 0);
addr = sqlite3VdbeAddOp(v, OP_IncrVacuum, iDb, 0);
sqlite3VdbeAddOp(v, OP_Callback, 0, 0);
sqlite3VdbeAddOp(v, OP_MemIncr, -1, 0);
sqlite3VdbeAddOp(v, OP_IfMemPos, 0, addr);
sqlite3VdbeJumpHere(v, addr);
}else
#endif
#ifndef SQLITE_OMIT_PAGER_PRAGMAS
/*
** PRAGMA [database.]cache_size