SQLite

** on how SQLite interfaces are suppose to operate.
**
** The name of this file under configuration management is "sqlite.h.in".
** The makefile makes some minor changes to this file (such as inserting
** the version number) and changes its name to "sqlite3.h" as
** part of the build process.
**
** @(#) $Id: sqlite.h.in,v 1.372 2008/07/16 13:29:51 drh Exp $
*/
#ifndef _SQLITE3_H_
#define _SQLITE3_H_
#include <stdarg.h>     /* Needed for the definition of va_list */

/*
** Make sure we can call this stuff from C++.

** what property of SQLite is to be configured.  Subsequent arguments
** vary depending on the [SQLITE_CONFIG_SINGLETHREAD | configuration option]
** in the first argument.
**
** When a configuration option is set, sqlite3_config() returns SQLITE_OK.
** If the option is unknown or SQLite is unable to set the option
** then this routine returns a non-zero [error code].
**
** The sqlite3_config() interface is considered experimental in that
** new configuration options may be added in future releases and existing
** configuration options may be discontinued or modified.
*/
int sqlite3_config(int, ...);

/*
** CAPI3REF: Memory Allocation Routines {F10155}
**
** An instance of this object defines the interface between SQLite

};

/*
** CAPI3REF: Configuration Options {F10160}
**
** These constants are the available integer configuration options that
** can be passed as the first argument to the [sqlite3_config()] interface.
**
** New configuration options may be added in future releases of SQLite.
** Existing configuration options might be discontinued.  Applications
** should check the return code from [sqlite3_config()] to make sure that
** the call worked.  The [sqlite3_config()] interface will return a
** non-zero [error code] if a discontinued or unsupported configuration option
** is invoked.
**
** <dl>
** <dt>SQLITE_CONFIG_SINGLETHREAD</dt>
** <dd>There are no arguments to this option.  This option disables
** all mutexing and puts SQLite into a mode where it can only be used
** by a single thread.</dd>
**

** large, default limits.  Databases managed by external sources can
** be given much smaller limits designed to prevent a denial of service
** attack.  Developers might also want to use the [sqlite3_set_authorizer()]
** interface to further control untrusted SQL.  The size of the database
** created by an untrusted script can be contained using the
** [max_page_count] [PRAGMA].
**
** New run-time limit categories may be added in future releases.

**
** INVARIANTS:
**
** {F12762} A successful call to [sqlite3_limit(D,C,V)] where V is
**          positive changes the limit on the size of construct C in the
**          [database connection] D to the lesser of V and the hard upper
**          bound on the size of C that is set at compile-time.

** an error or constraint causes an implicit rollback to occur.
** The rollback callback is not invoked if a transaction is
** automatically rolled back because the database connection is closed.
** The rollback callback is not invoked if a transaction is
** rolled back because a commit callback returned non-zero.
** <todo> Check on this </todo>
**


** INVARIANTS:
**
** {F12951} The [sqlite3_commit_hook(D,F,P)] interface registers the
**          callback function F to be invoked with argument P whenever
**          a transaction commits on the [database connection] D.
**
** {F12952} The [sqlite3_commit_hook(D,F,P)] interface returns the P argument

** to all new [database connections]. {END}
**
** This routine stores a pointer to the extension in an array that is
** obtained from [sqlite3_malloc()].  If you run a memory leak checker
** on your program and it reports a leak because of this array, invoke
** [sqlite3_reset_auto_extension()] prior to shutdown to free the memory.
**



** {F12641} This function registers an extension entry point that is
**          automatically invoked whenever a new [database connection]
**          is opened using [sqlite3_open()], [sqlite3_open16()],
**          or [sqlite3_open_v2()].
**
** {F12642} Duplicate extensions are detected so calling this routine
**          multiple times with the same extension is harmless.

/*
** CAPI3REF: Reset Automatic Extension Loading {F12660}
**
** This function disables all previously registered automatic
** extensions. {END}  It undoes the effect of all prior
** [sqlite3_auto_extension()] calls.
**



** {F12661} This function disables all previously registered
**          automatic extensions.
**
** {F12662} This function disables automatic extensions in all threads.
*/
void sqlite3_reset_auto_extension(void);