2 * SPDX-License-Identifier: MIT
4 * Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
7 #include "logging/comp-logging.h"
11 * Useful Python objects.
14 static PyObject
*py_mod_bt2
= NULL
;
15 static PyObject
*py_mod_bt2_exc_error_type
= NULL
;
16 static PyObject
*py_mod_bt2_exc_memory_error
= NULL
;
17 static PyObject
*py_mod_bt2_exc_try_again_type
= NULL
;
18 static PyObject
*py_mod_bt2_exc_stop_type
= NULL
;
19 static PyObject
*py_mod_bt2_exc_unknown_object_type
= NULL
;
22 void bt_bt2_init_from_bt2(void)
25 * This is called once the bt2 package is loaded.
27 * Those modules and functions are needed while the package is
28 * used. Loading them here is safe because we know the bt2
29 * package is imported, and we know that the user cannot use the
30 * code here without importing bt2 first.
32 py_mod_bt2
= PyImport_ImportModule("bt2");
33 BT_ASSERT(py_mod_bt2
);
34 py_mod_bt2_exc_error_type
=
35 PyObject_GetAttrString(py_mod_bt2
, "_Error");
36 BT_ASSERT(py_mod_bt2_exc_error_type
);
37 py_mod_bt2_exc_memory_error
=
38 PyObject_GetAttrString(py_mod_bt2
, "_MemoryError");
39 BT_ASSERT(py_mod_bt2_exc_memory_error
);
40 py_mod_bt2_exc_try_again_type
=
41 PyObject_GetAttrString(py_mod_bt2
, "TryAgain");
42 BT_ASSERT(py_mod_bt2_exc_try_again_type
);
43 py_mod_bt2_exc_stop_type
=
44 PyObject_GetAttrString(py_mod_bt2
, "Stop");
45 BT_ASSERT(py_mod_bt2_exc_stop_type
);
46 py_mod_bt2_exc_unknown_object_type
=
47 PyObject_GetAttrString(py_mod_bt2
, "UnknownObject");
48 BT_ASSERT(py_mod_bt2_exc_unknown_object_type
);
52 void bt_bt2_exit_handler(void)
55 * This is an exit handler (set by the bt2 package).
57 * We only give back the references that we took in
58 * bt_bt2_init_from_bt2() here. The global variables continue
59 * to exist for the code of this file, but they are now borrowed
60 * references. If this code is executed, it means that somehow
61 * the modules are still loaded, so it should be safe to use
62 * them even without a strong reference.
64 * We cannot do this in the library's destructor because it
65 * gets executed once Python is already finalized.
67 Py_XDECREF(py_mod_bt2
);
68 Py_XDECREF(py_mod_bt2_exc_error_type
);
69 Py_XDECREF(py_mod_bt2_exc_try_again_type
);
70 Py_XDECREF(py_mod_bt2_exc_stop_type
);
71 Py_XDECREF(py_mod_bt2_exc_unknown_object_type
);