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bpo-9303: Migrate sqlite3 module to _v2 API to enhance performance by palaviv · Pull Request #359 · python/cpython · GitHub
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bpo-9303: Migrate sqlite3 module to _v2 API to enhance performance #359

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Merged
berkerpeksag merged 10 commits into from
Mar 3, 2017
Merged

bpo-9303: Migrate sqlite3 module to _v2 API to enhance performance #359

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c92e604
Add optional use of sqlite3_open_v2, sqlite3_close_v2 and sqlite3_pre…
palaviv Feb 28, 2017
8eccb84
Use SQLITE_VERSION_NUMBER
palaviv Mar 1, 2017
5360795
Don't call sqlite3_reset in _pysqlite_seterror in using sqlite3_prepa…
palaviv Mar 1, 2017
9185cb9
Revert sqlite3_open change
palaviv Mar 1, 2017
f7dcd02
Don't reset the statment if using sqlite3_prepare_v2
palaviv Mar 2, 2017
d4d9c4e
CR fixes
palaviv Mar 2, 2017
64c3bb7
Add NEWS entry
palaviv Mar 2, 2017
645d959
Merge remote-tracking branch 'upstream/master' into sqlite-v2-api
palaviv Mar 2, 2017
f1ddaba
Fix ifdef in _pysqlite_seterror
palaviv Mar 3, 2017
3157f4c
Merge remote-tracking branch 'upstream/master' into sqlite-v2-api
palaviv Mar 3, 2017
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Add optional use of sqlite3_open_v2, sqlite3_close_v2 and sqlite3_pre… 
…pare_v2
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@palaviv
palaviv committed Feb 28, 2017
commit c92e6047bde01bcb846ad1fcf4126d3001e30f4b
15 changes: 10 additions & 5 deletions Modules/_sqlite/connection.c
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Expand Up @@ -118,7 +118,12 @@ int pysqlite_connection_init(pysqlite_Connection* self, PyObject* args, PyObject
return -1;
}
Py_BEGIN_ALLOW_THREADS
#ifdef HAVE_SQLITE3_OPEN_V2
rc = sqlite3_open_v2(database, &self->db,

@berkerpeksag berkerpeksag Feb 28, 2017 •
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I think that there is an opportunity to simplify this whole SQLITE_OPEN_URI and HAVE_SQLITE3_OPEN_V2 dance.

(The use of Py_BEGIN_ALLOW_THREADS is a bit weird in line 111 and line 120.)

SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL);

@berkerpeksag berkerpeksag Feb 28, 2017

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Style nitpick: FOO|BAR is more common than FOO | BAR in sqlite3 code base.

#else
rc = sqlite3_open(database, &self->db);
#endif
#endif
Py_END_ALLOW_THREADS

Expand Down Expand Up @@ -241,7 +246,7 @@ void pysqlite_connection_dealloc(pysqlite_Connection* self)
/* Clean up if user has not called .close() explicitly. */
if (self->db) {
Py_BEGIN_ALLOW_THREADS
sqlite3_close(self->db);
SQLITE3_CLOSE(self->db);
Py_END_ALLOW_THREADS
}

Expand Down Expand Up @@ -334,7 +339,7 @@ PyObject* pysqlite_connection_close(pysqlite_Connection* self, PyObject* args)

if (self->db) {
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_close(self->db);
rc = SQLITE3_CLOSE(self->db);
Py_END_ALLOW_THREADS

if (rc != SQLITE_OK) {
Expand Down Expand Up @@ -375,7 +380,7 @@ PyObject* _pysqlite_connection_begin(pysqlite_Connection* self)
sqlite3_stmt* statement;

Py_BEGIN_ALLOW_THREADS
rc = sqlite3_prepare(self->db, self->begin_statement, -1, &statement, &tail);
rc = SQLITE3_PREPARE(self->db, self->begin_statement, -1, &statement, &tail);
Py_END_ALLOW_THREADS

if (rc != SQLITE_OK) {
Expand Down Expand Up @@ -417,7 +422,7 @@ PyObject* pysqlite_connection_commit(pysqlite_Connection* self, PyObject* args)
if (!sqlite3_get_autocommit(self->db)) {

Py_BEGIN_ALLOW_THREADS
rc = sqlite3_prepare(self->db, "COMMIT", -1, &statement, &tail);
rc = SQLITE3_PREPARE(self->db, "COMMIT", -1, &statement, &tail);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK) {
_pysqlite_seterror(self->db, NULL);
Expand Down Expand Up @@ -460,7 +465,7 @@ PyObject* pysqlite_connection_rollback(pysqlite_Connection* self, PyObject* args
pysqlite_do_all_statements(self, ACTION_RESET, 1);

Py_BEGIN_ALLOW_THREADS
rc = sqlite3_prepare(self->db, "ROLLBACK", -1, &statement, &tail);
rc = SQLITE3_PREPARE(self->db, "ROLLBACK", -1, &statement, &tail);
Py_END_ALLOW_THREADS
if (rc != SQLITE_OK) {
_pysqlite_seterror(self->db, NULL);
Expand Down
2 changes: 1 addition & 1 deletion Modules/_sqlite/cursor.c
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Expand Up @@ -706,7 +706,7 @@ PyObject* pysqlite_cursor_executescript(pysqlite_Cursor* self, PyObject* args)

while (1) {
Py_BEGIN_ALLOW_THREADS
rc = sqlite3_prepare(self->connection->db,
rc = SQLITE3_PREPARE(self->connection->db,
script_cstr,
-1,
&statement,
Expand Down
4 changes: 2 additions & 2 deletions Modules/_sqlite/statement.c
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Expand Up @@ -93,7 +93,7 @@ int pysqlite_statement_create(pysqlite_Statement* self, pysqlite_Connection* con
}

Py_BEGIN_ALLOW_THREADS
rc = sqlite3_prepare(connection->db,
rc = SQLITE3_PREPARE(connection->db,
sql_cstr,
-1,
&self->st,
Expand Down Expand Up @@ -334,7 +334,7 @@ int pysqlite_statement_recompile(pysqlite_Statement* self, PyObject* params)
}

Py_BEGIN_ALLOW_THREADS
rc = sqlite3_prepare(self->db,
rc = SQLITE3_PREPARE(self->db,
sql_cstr,
-1,
&new_st,
Expand Down
12 changes: 12 additions & 0 deletions Modules/_sqlite/util.h
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Expand Up @@ -39,4 +39,16 @@ int _pysqlite_seterror(sqlite3* db, sqlite3_stmt* st);
PyObject * _pysqlite_long_from_int64(sqlite_int64 value);
sqlite_int64 _pysqlite_long_as_int64(PyObject * value);

#ifdef HAVE_SQLITE3_PREPARE_V2
#define SQLITE3_PREPARE sqlite3_prepare_v2
#else
#define SQLITE3_PREPARE sqlite3_prepare
#endif

#ifdef HAVE_SQLITE3_CLOSE_V2
#define SQLITE3_CLOSE sqlite3_close_v2
#else
#define SQLITE3_CLOSE sqlite3_close
#endif

#endif
8 changes: 8 additions & 0 deletions configure.ac
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Expand Up @@ -2854,6 +2854,14 @@ AC_ARG_ENABLE(loadable-sqlite-extensions,

AC_MSG_RESULT($enable_loadable_sqlite_extensions)

# Check for support of sqlite3 _v2 interface
AC_CHECK_LIB(sqlite3, sqlite3_prepare_v2,
AC_DEFINE(HAVE_SQLITE3_PREPARE_V2, 1, [Define if the sqlite3 library has sqlite3_prepare_v2]))
AC_CHECK_LIB(sqlite3, sqlite3_open_v2,
AC_DEFINE(HAVE_SQLITE3_OPEN_V2, 1, [Define if the sqlite3 library has sqlite3_open_v2]))
AC_CHECK_LIB(sqlite3, sqlite3_close_v2,
AC_DEFINE(HAVE_SQLITE3_CLOSE_V2, 1, [Define if the sqlite3 library has sqlite3_close_v2]))

# Check for --with-tcltk-includes=path and --with-tcltk-libs=path
AC_SUBST(TCLTK_INCLUDES)
AC_SUBST(TCLTK_LIBS)
Expand Down
9 changes: 9 additions & 0 deletions pyconfig.h.in
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Expand Up @@ -898,6 +898,15 @@
/* Define to 1 if you have the <spawn.h> header file. */
#undef HAVE_SPAWN_H

/* Define if the sqlite3 library has sqlite3_close_v2 */
#undef HAVE_SQLITE3_CLOSE_V2

/* Define if the sqlite3 library has sqlite3_open_v2 */
#undef HAVE_SQLITE3_OPEN_V2

/* Define if the sqlite3 library has sqlite3_prepare_v2 */
#undef HAVE_SQLITE3_PREPARE_V2

/* Define if your compiler provides ssize_t */
#undef HAVE_SSIZE_T

Expand Down