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Initial implementation of per-connection limits and the sqlite3_limit() API.

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The sqllimits1.test script crashes.  SQLITE_LIMIT_PAGE_COUNT and
SQLITE_LIMIT_VDBE_OP are currently ignored. (CVS 4897)

FossilOrigin-Name: 60c77882b2de9f6a45f8bd87c9c6a0cc613f8373
This commit is contained in:
drh
2008-03-20 14:03:29 +00:00
parent f653d78282
commit bb4957f858
21 changed files with 284 additions and 364 deletions
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49
src/sqliteInt.h
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@@ -11,7 +11,7 @@
*************************************************************************
** Internal interface definitions for SQLite.
**
** @(#) $Id: sqliteInt.h,v 1.676 2008/03/20 11:04:21 danielk1977 Exp $
** @(#) $Id: sqliteInt.h,v 1.677 2008/03/20 14:03:29 drh Exp $
*/
#ifndef _SQLITEINT_H_
#define _SQLITEINT_H_
@@ -21,6 +21,7 @@
** (otherwise we get an empty default).
*/
#include "config.h"
#include "sqliteLimit.h"
/* Needed for various definitions... */
#define _GNU_SOURCE
@@ -91,51 +92,6 @@
#endif
#include "sqliteLimit.h"
/*
** For testing purposes, the various size limit constants are really
** variables that we can modify in the testfixture.
*/
#ifdef SQLITE_TEST
#undef SQLITE_MAX_LENGTH
#undef SQLITE_MAX_COLUMN
#undef SQLITE_MAX_SQL_LENGTH
#undef SQLITE_MAX_EXPR_DEPTH
#undef SQLITE_MAX_COMPOUND_SELECT
#undef SQLITE_MAX_VDBE_OP
#undef SQLITE_MAX_FUNCTION_ARG
#undef SQLITE_MAX_VARIABLE_NUMBER
#undef SQLITE_MAX_PAGE_SIZE
#undef SQLITE_MAX_PAGE_COUNT
#undef SQLITE_MAX_LIKE_PATTERN_LENGTH
#define SQLITE_MAX_LENGTH sqlite3MAX_LENGTH
#define SQLITE_MAX_COLUMN sqlite3MAX_COLUMN
#define SQLITE_MAX_SQL_LENGTH sqlite3MAX_SQL_LENGTH
#define SQLITE_MAX_EXPR_DEPTH sqlite3MAX_EXPR_DEPTH
#define SQLITE_MAX_COMPOUND_SELECT sqlite3MAX_COMPOUND_SELECT
#define SQLITE_MAX_VDBE_OP sqlite3MAX_VDBE_OP
#define SQLITE_MAX_FUNCTION_ARG sqlite3MAX_FUNCTION_ARG
#define SQLITE_MAX_VARIABLE_NUMBER sqlite3MAX_VARIABLE_NUMBER
#define SQLITE_MAX_PAGE_SIZE sqlite3MAX_PAGE_SIZE
#define SQLITE_MAX_PAGE_COUNT sqlite3MAX_PAGE_COUNT
#define SQLITE_MAX_LIKE_PATTERN_LENGTH sqlite3MAX_LIKE_PATTERN_LENGTH
extern int sqlite3MAX_LENGTH;
extern int sqlite3MAX_COLUMN;
extern int sqlite3MAX_SQL_LENGTH;
extern int sqlite3MAX_EXPR_DEPTH;
extern int sqlite3MAX_COMPOUND_SELECT;
extern int sqlite3MAX_VDBE_OP;
extern int sqlite3MAX_FUNCTION_ARG;
extern int sqlite3MAX_VARIABLE_NUMBER;
extern int sqlite3MAX_PAGE_SIZE;
extern int sqlite3MAX_PAGE_COUNT;
extern int sqlite3MAX_LIKE_PATTERN_LENGTH;
#endif
/*
** The SQLITE_THREADSAFE macro must be defined as either 0 or 1.
** Older versions of SQLite used an optional THREADSAFE macro.
@@ -1721,6 +1677,7 @@ struct StrAccum {
char *zText; /* The string collected so far */
int nChar; /* Length of the string so far */
int nAlloc; /* Amount of space allocated in zText */
int mxAlloc; /* Maximum allowed string length */
u8 mallocFailed; /* Becomes true if any memory allocation fails */
u8 useMalloc; /* True if zText is enlargable using realloc */
u8 tooBig; /* Becomes true if string size exceeds limits */