mirror of https://github.com/python/cpython
gh-89121: Keep the number of pending SQLite statements to a minimum (#30379)
Make sure statements that have run to completion or errored are reset and cleared off the cursor for all paths in execute() and executemany().
This commit is contained in:
parent
11e865c74b
commit
89285314bd
|
@ -830,16 +830,12 @@ _pysqlite_query_execute(pysqlite_Cursor* self, int multiple, PyObject* operation
|
|||
}
|
||||
}
|
||||
|
||||
if (self->statement != NULL) {
|
||||
/* There is an active statement */
|
||||
stmt_reset(self->statement);
|
||||
}
|
||||
|
||||
/* reset description */
|
||||
Py_INCREF(Py_None);
|
||||
Py_SETREF(self->description, Py_None);
|
||||
|
||||
if (self->statement) {
|
||||
// Reset pending statements on this cursor.
|
||||
(void)stmt_reset(self->statement);
|
||||
}
|
||||
|
||||
|
@ -879,6 +875,7 @@ _pysqlite_query_execute(pysqlite_Cursor* self, int multiple, PyObject* operation
|
|||
}
|
||||
}
|
||||
|
||||
assert(!sqlite3_stmt_busy(self->statement->st));
|
||||
while (1) {
|
||||
parameters = PyIter_Next(parameters_iter);
|
||||
if (!parameters) {
|
||||
|
@ -902,7 +899,6 @@ _pysqlite_query_execute(pysqlite_Cursor* self, int multiple, PyObject* operation
|
|||
PyErr_Clear();
|
||||
}
|
||||
}
|
||||
(void)stmt_reset(self->statement);
|
||||
_pysqlite_seterror(state, self->connection->db);
|
||||
goto error;
|
||||
}
|
||||
|
@ -944,16 +940,8 @@ _pysqlite_query_execute(pysqlite_Cursor* self, int multiple, PyObject* operation
|
|||
}
|
||||
}
|
||||
|
||||
if (rc == SQLITE_DONE && !multiple) {
|
||||
if (rc == SQLITE_DONE) {
|
||||
if (self->statement->is_dml) {
|
||||
self->rowcount = (long)sqlite3_changes(self->connection->db);
|
||||
}
|
||||
stmt_reset(self->statement);
|
||||
Py_CLEAR(self->statement);
|
||||
}
|
||||
|
||||
if (multiple) {
|
||||
if (self->statement->is_dml && rc == SQLITE_DONE) {
|
||||
self->rowcount += (long)sqlite3_changes(self->connection->db);
|
||||
}
|
||||
stmt_reset(self->statement);
|
||||
|
@ -980,11 +968,17 @@ error:
|
|||
self->locked = 0;
|
||||
|
||||
if (PyErr_Occurred()) {
|
||||
if (self->statement) {
|
||||
(void)stmt_reset(self->statement);
|
||||
Py_CLEAR(self->statement);
|
||||
}
|
||||
self->rowcount = -1L;
|
||||
return NULL;
|
||||
} else {
|
||||
return Py_NewRef((PyObject *)self);
|
||||
}
|
||||
if (self->statement && !sqlite3_stmt_busy(self->statement->st)) {
|
||||
Py_CLEAR(self->statement);
|
||||
}
|
||||
return Py_NewRef((PyObject *)self);
|
||||
}
|
||||
|
||||
/*[clinic input]
|
||||
|
@ -1111,11 +1105,7 @@ pysqlite_cursor_iternext(pysqlite_Cursor *self)
|
|||
|
||||
sqlite3_stmt *stmt = self->statement->st;
|
||||
assert(stmt != NULL);
|
||||
if (sqlite3_data_count(stmt) == 0) {
|
||||
(void)stmt_reset(self->statement);
|
||||
Py_CLEAR(self->statement);
|
||||
return NULL;
|
||||
}
|
||||
assert(sqlite3_data_count(stmt) != 0);
|
||||
|
||||
self->locked = 1; // GH-80254: Prevent recursive use of cursors.
|
||||
PyObject *row = _pysqlite_fetch_one_row(self);
|
||||
|
|
Loading…
Reference in New Issue