1 /* Python interface to inferior events.
3 Copyright (C) 2009-2019 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
24 evpy_dealloc (PyObject *self)
26 Py_XDECREF (((event_object *) self)->dict);
27 Py_TYPE (self)->tp_free (self);
31 create_event_object (PyTypeObject *py_type)
33 gdbpy_ref<event_object> event_obj (PyObject_New (event_object, py_type));
34 if (event_obj == NULL)
37 event_obj->dict = PyDict_New ();
41 return gdbpy_ref<> ((PyObject *) event_obj.release ());
44 /* Add the attribute ATTR to the event object EVENT. In
45 python this attribute will be accessible by the name NAME.
46 returns 0 if the operation succeeds and -1 otherwise. This
47 function acquires a new reference to ATTR. */
50 evpy_add_attribute (PyObject *event, const char *name, PyObject *attr)
52 return PyObject_SetAttrString (event, name, attr);
55 /* Initialize the Python event code. */
58 gdbpy_initialize_event (void)
60 return gdbpy_initialize_event_generic (&event_object_type,
64 /* Initialize the given event type. If BASE is not NULL it will
65 be set as the types base.
66 Returns 0 if initialization was successful -1 otherwise. */
69 gdbpy_initialize_event_generic (PyTypeObject *type,
72 if (PyType_Ready (type) < 0)
75 return gdb_pymodule_addobject (gdb_module, name, (PyObject *) type);
79 /* Notify the list of listens that the given EVENT has occurred.
80 returns 0 if emit is successful -1 otherwise. */
83 evpy_emit_event (PyObject *event,
84 eventregistry_object *registry)
88 /* Create a copy of call back list and use that for
89 notifying listeners to avoid skipping callbacks
90 in the case of a callback being disconnected during
92 gdbpy_ref<> callback_list_copy (PySequence_List (registry->callbacks));
93 if (callback_list_copy == NULL)
96 for (i = 0; i < PyList_Size (callback_list_copy.get ()); i++)
98 PyObject *func = PyList_GetItem (callback_list_copy.get (), i);
103 gdbpy_ref<> func_result (PyObject_CallFunctionObjArgs (func, event,
106 if (func_result == NULL)
108 /* Print the trace here, but keep going -- we want to try to
109 call all of the callbacks even if one is broken. */
110 gdbpy_print_stack ();
117 static gdb_PyGetSetDef event_object_getset[] =
119 { "__dict__", gdb_py_generic_dict, NULL,
120 "The __dict__ for this event.", &event_object_type },
124 PyTypeObject event_object_type =
126 PyVarObject_HEAD_INIT (NULL, 0)
127 "gdb.Event", /* tp_name */
128 sizeof (event_object), /* tp_basicsize */
130 evpy_dealloc, /* tp_dealloc */
136 0, /* tp_as_number */
137 0, /* tp_as_sequence */
138 0, /* tp_as_mapping */
144 0, /* tp_as_buffer */
145 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
146 "GDB event object", /* tp_doc */
149 0, /* tp_richcompare */
150 0, /* tp_weaklistoffset */
155 event_object_getset, /* tp_getset */
158 0, /* tp_descr_get */
159 0, /* tp_descr_set */
160 offsetof (event_object, dict), /* tp_dictoffset */