1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/* Python interface to inferior events.
Copyright (C) 2009-2015 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);
}
PyObject *
create_event_object (PyTypeObject *py_type)
{
event_object *event_obj;
event_obj = PyObject_New (event_object, py_type);
if (!event_obj)
goto fail;
event_obj->dict = PyDict_New ();
if (!event_obj->dict)
goto fail;
return (PyObject*) event_obj;
fail:
Py_XDECREF (event_obj);
return NULL;
}
/* 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, 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,
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)
{
PyObject *callback_list_copy = NULL;
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. */
callback_list_copy = PySequence_List (registry->callbacks);
if (!callback_list_copy)
goto fail;
for (i = 0; i < PyList_Size (callback_list_copy); i++)
{
PyObject *func = PyList_GetItem (callback_list_copy, i);
PyObject *func_result;
if (func == NULL)
goto fail;
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 ();
}
else
{
Py_DECREF (func_result);
}
}
Py_XDECREF (callback_list_copy);
Py_XDECREF (event);
return 0;
fail:
gdbpy_print_stack ();
Py_XDECREF (callback_list_copy);
Py_XDECREF (event);
return -1;
}
static 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 */
};
|
