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Reuse space left-over opcode space at the end of the VDBE opcode array to

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store memory cells, VDBE cursors, and other content needed by the VDBE.
This reduces the memory required by a prepared statement. (CVS 6307)

FossilOrigin-Name: 58a1809257ccfb7d9112a35f79ca2f82b3daa878
This commit is contained in:
drh
2009-02-20 01:28:59 +00:00
parent e1935f2367
commit b2771ce24c
4 changed files with 74 additions and 33 deletions
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3
src/vdbeInt.h
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@@ -15,7 +15,7 @@
** 6000 lines long) it was split up into several smaller files and
** this header information was factored out.
**
** $Id: vdbeInt.h,v 1.163 2009/02/19 14:39:25 danielk1977 Exp $
** $Id: vdbeInt.h,v 1.164 2009/02/20 01:28:59 drh Exp $
*/
#ifndef _VDBEINT_H_
#define _VDBEINT_H_
@@ -304,6 +304,7 @@ struct Vdbe {
BtreeMutexArray aMutex; /* An array of Btree used here and needing locks */
int aCounter[2]; /* Counters used by sqlite3_stmt_status() */
char *zSql; /* Text of the SQL statement that generated this */
void *pFree; /* Free this when deleting the vdbe */
#ifdef SQLITE_DEBUG
FILE *trace; /* Write an execution trace here, if not NULL */
#endif