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More work toward converting the VM into a register-based machine. (CVS 4704)

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FossilOrigin-Name: 8cbd46517f407b3b1ce187b623db10f00aa415ea
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drh
2008-01-10 23:50:11 +00:00
parent 892d317990
commit 2d401ab8f9
15 changed files with 348 additions and 536 deletions
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14
src/vdbeblob.c
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@@ -12,7 +12,7 @@
**
** This file contains code used to implement incremental BLOB I/O.
**
** $Id: vdbeblob.c,v 1.17 2008/01/03 07:54:24 danielk1977 Exp $
** $Id: vdbeblob.c,v 1.18 2008/01/10 23:50:11 drh Exp $
*/
#include "sqliteInt.h"
@@ -54,7 +54,7 @@ int sqlite3_blob_open(
** vdbe program will take advantage of the various transaction,
** locking and error handling infrastructure built into the vdbe.
**
** After seeking the cursor, the vdbe executes an OP_Callback.
** After seeking the cursor, the vdbe executes an OP_ResultRow.
** Code external to the Vdbe then "borrows" the b-tree cursor and
** uses it to implement the blob_read(), blob_write() and
** blob_bytes() functions.
@@ -74,10 +74,10 @@ int sqlite3_blob_open(
{OP_OpenWrite, 0, 0, 0}, /* 3: Open cursor 0 for read/write */
{OP_SetNumColumns, 0, 0, 0}, /* 4: Num cols for cursor */
{OP_Variable, 1, 0, 0}, /* 5: Push the rowid to the stack */
{OP_NotExists, 0, 10, 0}, /* 6: Seek the cursor */
{OP_Column, 0, 0, 0}, /* 7 */
{OP_Callback, 0, 0, 0}, /* 8 */
{OP_Variable, 1, 1, 0}, /* 5: Push the rowid to the stack */
{OP_NotExists, 0, 10, 1}, /* 6: Seek the cursor */
{OP_Column, 0, 0, 1}, /* 7 */
{OP_ResultRow, 1, 0, 0}, /* 8 */
{OP_Close, 0, 0, 0}, /* 9 */
{OP_Halt, 0, 0, 0}, /* 10 */
};
@@ -181,7 +181,7 @@ int sqlite3_blob_open(
*/
sqlite3VdbeChangeP2(v, 4, pTab->nCol+1);
if( !db->mallocFailed ){
sqlite3VdbeMakeReady(v, 1, 0, 1, 0);
sqlite3VdbeMakeReady(v, 1, 1, 1, 0);
}
}