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
|
/* Python interface to inferior thread event registries.
Copyright (C) 2009-2020 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 "command.h"
#include "py-events.h"
events_object gdb_py_events;
extern PyTypeObject eventregistry_object_type
CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("eventregistry_object");
/* Implementation of EventRegistry.connect () -> NULL.
Add FUNCTION to the list of listeners. */
static PyObject *
evregpy_connect (PyObject *self, PyObject *function)
{
PyObject *func;
PyObject *callback_list = (((eventregistry_object *) self)->callbacks);
if (!PyArg_ParseTuple (function, "O", &func))
return NULL;
if (!PyCallable_Check (func))
{
PyErr_SetString (PyExc_RuntimeError, "Function is not callable");
return NULL;
}
if (PyList_Append (callback_list, func) < 0)
return NULL;
Py_RETURN_NONE;
}
/* Implementation of EventRegistry.disconnect () -> NULL.
Remove FUNCTION from the list of listeners. */
static PyObject *
evregpy_disconnect (PyObject *self, PyObject *function)
{
PyObject *func;
int index;
PyObject *callback_list = (((eventregistry_object *) self)->callbacks);
if (!PyArg_ParseTuple (function, "O", &func))
return NULL;
index = PySequence_Index (callback_list, func);
if (index < 0)
Py_RETURN_NONE;
if (PySequence_DelItem (callback_list, index) < 0)
return NULL;
Py_RETURN_NONE;
}
/* Create a new event registry. This function uses PyObject_New
and therefore returns a new reference that callers must handle. */
eventregistry_object *
create_eventregistry_object (void)
{
gdbpy_ref<eventregistry_object>
eventregistry_obj (PyObject_New (eventregistry_object,
&eventregistry_object_type));
if (eventregistry_obj == NULL)
return NULL;
eventregistry_obj->callbacks = PyList_New (0);
if (!eventregistry_obj->callbacks)
return NULL;
return eventregistry_obj.release ();
}
static void
evregpy_dealloc (PyObject *self)
{
Py_XDECREF (((eventregistry_object *) self)->callbacks);
Py_TYPE (self)->tp_free (self);
}
/* Initialize the Python event registry code. */
int
gdbpy_initialize_eventregistry (void)
{
if (PyType_Ready (&eventregistry_object_type) < 0)
return -1;
return gdb_pymodule_addobject (gdb_module, "EventRegistry",
(PyObject *) &eventregistry_object_type);
}
/* Return the number of listeners currently connected to this
registry. */
int
evregpy_no_listeners_p (eventregistry_object *registry)
{
return PyList_Size (registry->callbacks) == 0;
}
static PyMethodDef eventregistry_object_methods[] =
{
{ "connect", evregpy_connect, METH_VARARGS, "Add function" },
{ "disconnect", evregpy_disconnect, METH_VARARGS, "Remove function" },
{ NULL } /* Sentinel. */
};
PyTypeObject eventregistry_object_type =
{
PyVarObject_HEAD_INIT (NULL, 0)
"gdb.EventRegistry", /* tp_name */
sizeof (eventregistry_object), /* tp_basicsize */
0, /* tp_itemsize */
evregpy_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, /* tp_flags */
"GDB event registry object", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
eventregistry_object_methods, /* tp_methods */
0, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0 /* tp_alloc */
};
|
