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Continued work toward converting to a register-based VM. (CVS 4698)

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FossilOrigin-Name: 92deff07bba2089bbe011f44defb3a0ac1362d56
This commit is contained in:
drh
2008-01-09 02:15:38 +00:00
parent 3557335658
commit 3c84ddff3e
10 changed files with 159 additions and 240 deletions
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37
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 1.162 2008/01/07 19:20:25 drh Exp $
** $Id: pragma.c,v 1.163 2008/01/09 02:15:39 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@@ -298,13 +298,13 @@ void sqlite3Pragma(
*/
if( sqlite3StrICmp(zLeft,"default_cache_size")==0 ){
static const VdbeOpList getCacheSize[] = {
{ OP_ReadCookie, 0, 0, 2}, /* 0 */
{ OP_AbsValue, 0, 0, 0},
{ OP_Copy, 0, 0, 0},
{ OP_Integer, 0, 0, 0},
{ OP_Ne, 0, 6, 0},
{ OP_Integer, 0, 0, 0}, /* 5 */
{ OP_Callback, 1, 0, 0},
{ OP_ReadCookie, 0, 1, 2}, /* 0 */
{ OP_IfPos, 1, 6, 0},
{ OP_Integer, 0, 2, 0},
{ OP_Subtract, 1, 2, 1},
{ OP_IfPos, 1, 6, 0},
{ OP_Integer, 0, 1, 0}, /* 5 */
{ OP_ResultRow, 1, 1, 0},
};
int addr;
if( sqlite3ReadSchema(pParse) ) goto pragma_out;
@@ -312,6 +312,7 @@ void sqlite3Pragma(
if( !zRight ){
sqlite3VdbeSetNumCols(v, 1);
sqlite3VdbeSetColName(v, 0, COLNAME_NAME, "cache_size", P4_STATIC);
pParse->nMem += 2;
addr = sqlite3VdbeAddOpList(v, ArraySize(getCacheSize), getCacheSize);
sqlite3VdbeChangeP1(v, addr, iDb);
sqlite3VdbeChangeP1(v, addr+5, SQLITE_DEFAULT_CACHE_SIZE);
@@ -319,11 +320,11 @@ void sqlite3Pragma(
int size = atoi(zRight);
if( size<0 ) size = -size;
sqlite3BeginWriteOperation(pParse, 0, iDb);
sqlite3VdbeAddOp2(v, OP_Integer, size, 0);
sqlite3VdbeAddOp1(v, OP_Integer, size);
sqlite3VdbeAddOp3(v, OP_ReadCookie, iDb, 0, 2);
addr = sqlite3VdbeAddOp2(v, OP_Integer, 0, 0);
sqlite3VdbeAddOp2(v, OP_Ge, 0, addr+3);
sqlite3VdbeAddOp2(v, OP_Negative, 0, 0);
addr = sqlite3VdbeAddOp2(v, OP_IfPos, 0, 0);
sqlite3VdbeAddOp1(v, OP_Integer, -size);
sqlite3VdbeJumpHere(v, addr);
sqlite3VdbeAddOp2(v, OP_SetCookie, iDb, 2);
pDb->pSchema->cache_size = size;
sqlite3BtreeSetCacheSize(pDb->pBt, pDb->pSchema->cache_size);
@@ -493,10 +494,10 @@ void sqlite3Pragma(
}
sqlite3BeginWriteOperation(pParse, 0, iDb);
sqlite3VdbeAddOp2(v, OP_Integer, iLimit, 1);
addr = sqlite3VdbeAddOp2(v, OP_IncrVacuum, iDb, 0);
sqlite3VdbeAddOp2(v, OP_Callback, 0, 0);
addr = sqlite3VdbeAddOp1(v, OP_IncrVacuum, iDb);
sqlite3VdbeAddOp0(v, OP_Callback);
sqlite3VdbeAddOp2(v, OP_AddImm, 1, -1);
sqlite3VdbeAddOp2(v, OP_IfMemPos, 1, addr);
sqlite3VdbeAddOp2(v, OP_IfPos, 1, addr);
sqlite3VdbeJumpHere(v, addr);
}else
#endif
@@ -863,7 +864,7 @@ void sqlite3Pragma(
if( OMIT_TEMPDB && i==1 ) continue;
sqlite3CodeVerifySchema(pParse, i);
addr = sqlite3VdbeAddOp2(v, OP_IfMemPos, 1, 0);
addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1);
sqlite3VdbeAddOp2(v, OP_Halt, 0, 0);
sqlite3VdbeJumpHere(v, addr);
@@ -899,7 +900,7 @@ void sqlite3Pragma(
int loopTop;
if( pTab->pIndex==0 ) continue;
addr = sqlite3VdbeAddOp2(v, OP_IfMemPos, 1, 0);
addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1);
sqlite3VdbeAddOp2(v, OP_Halt, 0, 0);
sqlite3VdbeJumpHere(v, addr);
sqlite3OpenTableAndIndices(pParse, pTab, 1, OP_OpenRead);
@@ -945,7 +946,7 @@ void sqlite3Pragma(
{ OP_Callback, 1, 0, 0},
};
if( pIdx->tnum==0 ) continue;
addr = sqlite3VdbeAddOp2(v, OP_IfMemPos, 1, 0);
addr = sqlite3VdbeAddOp1(v, OP_IfPos, 1);
sqlite3VdbeAddOp2(v, OP_Halt, 0, 0);
sqlite3VdbeJumpHere(v, addr);
addr = sqlite3VdbeAddOpList(v, ArraySize(cntIdx), cntIdx);