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Add the "lock_status" pragma - only available when SQLITE_DEBUG is defined.

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Used for testing only. (CVS 1547)

FossilOrigin-Name: 0ecbba78fcde8f7715cd74c674b5040ef4953f6e
This commit is contained in:
drh
2004-06-09 14:17:20 +00:00
parent faa57acc9f
commit 89ac8c1a70
5 changed files with 63 additions and 12 deletions
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38
src/pragma.c
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@@ -11,11 +11,16 @@
*************************************************************************
** This file contains code used to implement the PRAGMA command.
**
** $Id: pragma.c,v 1.39 2004/06/09 12:30:06 danielk1977 Exp $
** $Id: pragma.c,v 1.40 2004/06/09 14:17:21 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
#ifdef SQLITE_DEBUG
# include "pager.h"
# include "btree.h"
#endif
/*
** Interpret the given string as a boolean value.
*/
@@ -808,6 +813,37 @@ void sqlite3Pragma(Parse *pParse, Token *pLeft, Token *pRight, int minusFlag){
}
}else
#ifdef SQLITE_DEBUG
/*
** Report the current state of file logs for all databases
*/
if( sqlite3StrICmp(zLeft, "lock_status")==0 ){
static char *azLockName[] = {
"unlocked", "shared", "reserved", "pending", "exclusive"
};
int i;
Vdbe *v = sqlite3GetVdbe(pParse);
sqlite3VdbeSetNumCols(v, 2);
sqlite3VdbeSetColName(v, 0, "database", P3_STATIC);
sqlite3VdbeSetColName(v, 1, "status", P3_STATIC);
for(i=0; i<db->nDb; i++){
Btree *pBt;
Pager *pPager;
if( db->aDb[i].zName==0 ) continue;
sqlite3VdbeOp3(v, OP_String, 0, 0, db->aDb[i].zName, P3_STATIC);
pBt = db->aDb[i].pBt;
if( pBt==0 || (pPager = sqlite3BtreePager(pBt))==0 ){
sqlite3VdbeOp3(v, OP_String, 0, 0, "closed", P3_STATIC);
}else{
int j = sqlite3pager_lockstate(pPager);
sqlite3VdbeOp3(v, OP_String, 0, 0,
(j>=0 && j<=4) ? azLockName[j] : "unknown", P3_STATIC);
}
sqlite3VdbeAddOp(v, OP_Callback, 2, 0);
}
}else
#endif
{}
sqliteFree(zLeft);
sqliteFree(zRight);