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- /* Python interface to inferior events.
- Copyright (C) 2009-2022 Free Software Foundation, Inc.
- This file is part of GDB.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- #include "defs.h"
- #include "py-event.h"
- void
- evpy_dealloc (PyObject *self)
- {
- Py_XDECREF (((event_object *) self)->dict);
- Py_TYPE (self)->tp_free (self);
- }
- gdbpy_ref<>
- create_event_object (PyTypeObject *py_type)
- {
- gdbpy_ref<event_object> event_obj (PyObject_New (event_object, py_type));
- if (event_obj == NULL)
- return NULL;
- event_obj->dict = PyDict_New ();
- if (!event_obj->dict)
- return NULL;
- return gdbpy_ref<> ((PyObject *) event_obj.release ());
- }
- /* Add the attribute ATTR to the event object EVENT. In
- python this attribute will be accessible by the name NAME.
- returns 0 if the operation succeeds and -1 otherwise. This
- function acquires a new reference to ATTR. */
- int
- evpy_add_attribute (PyObject *event, const char *name, PyObject *attr)
- {
- return PyObject_SetAttrString (event, name, attr);
- }
- /* Initialize the Python event code. */
- int
- gdbpy_initialize_event (void)
- {
- return gdbpy_initialize_event_generic (&event_object_type,
- "Event");
- }
- /* Initialize the given event type. If BASE is not NULL it will
- be set as the types base.
- Returns 0 if initialization was successful -1 otherwise. */
- int
- gdbpy_initialize_event_generic (PyTypeObject *type,
- const char *name)
- {
- if (PyType_Ready (type) < 0)
- return -1;
- return gdb_pymodule_addobject (gdb_module, name, (PyObject *) type);
- }
- /* Notify the list of listens that the given EVENT has occurred.
- returns 0 if emit is successful -1 otherwise. */
- int
- evpy_emit_event (PyObject *event,
- eventregistry_object *registry)
- {
- Py_ssize_t i;
- /* Create a copy of call back list and use that for
- notifying listeners to avoid skipping callbacks
- in the case of a callback being disconnected during
- a notification. */
- gdbpy_ref<> callback_list_copy (PySequence_List (registry->callbacks));
- if (callback_list_copy == NULL)
- return -1;
- for (i = 0; i < PyList_Size (callback_list_copy.get ()); i++)
- {
- PyObject *func = PyList_GetItem (callback_list_copy.get (), i);
- if (func == NULL)
- return -1;
- gdbpy_ref<> func_result (PyObject_CallFunctionObjArgs (func, event,
- NULL));
- if (func_result == NULL)
- {
- /* Print the trace here, but keep going -- we want to try to
- call all of the callbacks even if one is broken. */
- gdbpy_print_stack ();
- }
- }
- return 0;
- }
- static gdb_PyGetSetDef event_object_getset[] =
- {
- { "__dict__", gdb_py_generic_dict, NULL,
- "The __dict__ for this event.", &event_object_type },
- { NULL }
- };
- PyTypeObject event_object_type =
- {
- PyVarObject_HEAD_INIT (NULL, 0)
- "gdb.Event", /* tp_name */
- sizeof (event_object), /* tp_basicsize */
- 0, /* tp_itemsize */
- evpy_dealloc, /* tp_dealloc */
- 0, /* tp_print */
- 0, /* tp_getattr */
- 0, /* tp_setattr */
- 0, /* tp_compare */
- 0, /* tp_repr */
- 0, /* tp_as_number */
- 0, /* tp_as_sequence */
- 0, /* tp_as_mapping */
- 0, /* tp_hash */
- 0, /* tp_call */
- 0, /* tp_str */
- 0, /* tp_getattro */
- 0, /* tp_setattro */
- 0, /* tp_as_buffer */
- Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */
- "GDB event object", /* tp_doc */
- 0, /* tp_traverse */
- 0, /* tp_clear */
- 0, /* tp_richcompare */
- 0, /* tp_weaklistoffset */
- 0, /* tp_iter */
- 0, /* tp_iternext */
- 0, /* tp_methods */
- 0, /* tp_members */
- event_object_getset, /* tp_getset */
- 0, /* tp_base */
- 0, /* tp_dict */
- 0, /* tp_descr_get */
- 0, /* tp_descr_set */
- offsetof (event_object, dict), /* tp_dictoffset */
- 0, /* tp_init */
- 0 /* tp_alloc */
- };
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