/ Check-in [1b39a714]
Login
SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

Overview
Comment:Add the experimental sqlite3_threadsafe() API. (CVS 4350)
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: 1b39a714efbe1f4ccc8daf68a227a8c9b84a388f
User & Date: drh 2007-08-30 20:09:48
Context
2007-08-31
05:00
Fix a problem in malloc3.test preventing all.test from completing. No code changes. (CVS 4351) check-in: ee9b3e5e user: danielk1977 tags: trunk
2007-08-30
20:09
Add the experimental sqlite3_threadsafe() API. (CVS 4350) check-in: 1b39a714 user: drh tags: trunk
20:09
Fix the loadable extension module so that it will compile with SQLITE_THREADSAFE=0. (CVS 4349) check-in: a73a8b50 user: drh tags: trunk
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/main.c.

10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27

28
29
30
31
32
33
34
**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.399 2007/08/30 16:23:19 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>

/*
** The version of the library
*/
const char sqlite3_version[] = SQLITE_VERSION;
const char *sqlite3_libversion(void){ return sqlite3_version; }
int sqlite3_libversion_number(void){ return SQLITE_VERSION_NUMBER; }


/*
** If the following function pointer is not NULL and if
** SQLITE_ENABLE_IOTRACE is enabled, then messages describing
** I/O active are written using this function.  These messages
** are intended for debugging activity only.
*/







|










>







10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
**
*************************************************************************
** Main file for the SQLite library.  The routines in this file
** implement the programmer interface to the library.  Routines in
** other files are for internal use by SQLite and should not be
** accessed by users of the library.
**
** $Id: main.c,v 1.400 2007/08/30 20:09:48 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>

/*
** The version of the library
*/
const char sqlite3_version[] = SQLITE_VERSION;
const char *sqlite3_libversion(void){ return sqlite3_version; }
int sqlite3_libversion_number(void){ return SQLITE_VERSION_NUMBER; }
int sqlite3_threadsafe(void){ return SQLITE_THREADSAFE; }

/*
** If the following function pointer is not NULL and if
** SQLITE_ENABLE_IOTRACE is enabled, then messages describing
** I/O active are written using this function.  These messages
** are intended for debugging activity only.
*/

Changes to src/sqlite.h.in.

26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
...
108
109
110
111
112
113
114
























115
116
117
118
119
120
121
** 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 1.250 2007/08/30 16:23:19 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++.
................................................................................
** is provided for DLL users who can only access functions and not
** constants within the DLL.
*/
SQLITE_EXTERN const char sqlite3_version[];
const char *sqlite3_libversion(void);
int sqlite3_libversion_number(void);

























/*
** CAPI3REF: Database Connection Handle
**
** Each open SQLite database is represented by pointer to an instance of the
** opaque structure named "sqlite3".  It is useful to think of an sqlite3
** pointer as an object.  The [sqlite3_open()], [sqlite3_open16()], and
** [sqlite3_open_v2()] interfaces are its constructors







|







 







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>







26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
...
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
** 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 1.251 2007/08/30 20:09:48 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++.
................................................................................
** is provided for DLL users who can only access functions and not
** constants within the DLL.
*/
SQLITE_EXTERN const char sqlite3_version[];
const char *sqlite3_libversion(void);
int sqlite3_libversion_number(void);

/*
** CAPI3REF: Test To See If The Library Is Threadsafe
**
** This routine returns TRUE (nonzero) if SQLite was compiled with
** all of its mutexes enabled and is thus threadsafe.  It returns
** zero if the particular build is for single-threaded operation
** only.
**
** Really all this routine does is return true if SQLite was compiled
** with the -DSQLITE_THREADSAFE=1 option and false if
** compiled with -DSQLITE_THREADSAFE=0.  If SQLite uses an
** application-defined mutex subsystem, malloc subsystem, collating
** sequence, VFS, SQL function, progress callback, commit hook,
** extension, or other accessories and these add-ons are not
** threadsafe, then clearly the combination will not be threadsafe
** either.  Hence, this routine never reports that the library
** is guaranteed to be threadsafe, only when it is guaranteed not
** to be.
**
** This is an experimental API and may go away or change in future
** releases.
*/
int sqlite3_threadsafe(void);

/*
** CAPI3REF: Database Connection Handle
**
** Each open SQLite database is represented by pointer to an instance of the
** opaque structure named "sqlite3".  It is useful to think of an sqlite3
** pointer as an object.  The [sqlite3_open()], [sqlite3_open16()], and
** [sqlite3_open_v2()] interfaces are its constructors