1 /* Python interface to inferior threads.
3 Copyright (C) 2009-2015 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/>. */
21 #include "gdbthread.h"
23 #include "python-internal.h"
25 static PyTypeObject thread_object_type
26 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("thread_object");
28 /* Require that INFERIOR be a valid inferior ID. */
29 #define THPY_REQUIRE_VALID(Thread) \
31 if (!Thread->thread) \
33 PyErr_SetString (PyExc_RuntimeError, \
34 _("Thread no longer exists.")); \
40 create_thread_object (struct thread_info *tp)
42 thread_object *thread_obj;
44 thread_obj = PyObject_New (thread_object, &thread_object_type);
48 thread_obj->thread = tp;
49 thread_obj->inf_obj = find_inferior_object (ptid_get_pid (tp->ptid));
55 thpy_dealloc (PyObject *self)
57 Py_DECREF (((thread_object *) self)->inf_obj);
58 Py_TYPE (self)->tp_free (self);
62 thpy_get_name (PyObject *self, void *ignore)
64 thread_object *thread_obj = (thread_object *) self;
67 THPY_REQUIRE_VALID (thread_obj);
69 name = thread_obj->thread->name;
71 name = target_thread_name (thread_obj->thread);
76 return PyString_FromString (name);
80 thpy_set_name (PyObject *self, PyObject *newvalue, void *ignore)
82 thread_object *thread_obj = (thread_object *) self;
85 if (! thread_obj->thread)
87 PyErr_SetString (PyExc_RuntimeError, _("Thread no longer exists."));
93 PyErr_SetString (PyExc_TypeError,
94 _("Cannot delete `name' attribute."));
97 else if (newvalue == Py_None)
99 else if (! gdbpy_is_string (newvalue))
101 PyErr_SetString (PyExc_TypeError,
102 _("The value of `name' must be a string."));
107 name = python_string_to_host_string (newvalue);
112 xfree (thread_obj->thread->name);
113 thread_obj->thread->name = name;
119 thpy_get_num (PyObject *self, void *closure)
121 thread_object *thread_obj = (thread_object *) self;
123 THPY_REQUIRE_VALID (thread_obj);
125 return PyLong_FromLong (thread_obj->thread->num);
128 /* Getter for InferiorThread.ptid -> (pid, lwp, tid).
129 Returns a tuple with the thread's ptid components. */
132 thpy_get_ptid (PyObject *self, void *closure)
136 thread_object *thread_obj = (thread_object *) self;
138 THPY_REQUIRE_VALID (thread_obj);
140 return gdbpy_create_ptid_object (thread_obj->thread->ptid);
143 /* Implementation of InferiorThread.switch ().
144 Makes this the GDB selected thread. */
147 thpy_switch (PyObject *self, PyObject *args)
149 thread_object *thread_obj = (thread_object *) self;
150 volatile struct gdb_exception except;
152 THPY_REQUIRE_VALID (thread_obj);
154 TRY_CATCH (except, RETURN_MASK_ALL)
156 switch_to_thread (thread_obj->thread->ptid);
158 GDB_PY_HANDLE_EXCEPTION (except);
163 /* Implementation of InferiorThread.is_stopped () -> Boolean.
164 Return whether the thread is stopped. */
167 thpy_is_stopped (PyObject *self, PyObject *args)
169 thread_object *thread_obj = (thread_object *) self;
171 THPY_REQUIRE_VALID (thread_obj);
173 if (is_stopped (thread_obj->thread->ptid))
179 /* Implementation of InferiorThread.is_running () -> Boolean.
180 Return whether the thread is running. */
183 thpy_is_running (PyObject *self, PyObject *args)
185 thread_object *thread_obj = (thread_object *) self;
187 THPY_REQUIRE_VALID (thread_obj);
189 if (is_running (thread_obj->thread->ptid))
195 /* Implementation of InferiorThread.is_exited () -> Boolean.
196 Return whether the thread is exited. */
199 thpy_is_exited (PyObject *self, PyObject *args)
201 thread_object *thread_obj = (thread_object *) self;
203 THPY_REQUIRE_VALID (thread_obj);
205 if (is_exited (thread_obj->thread->ptid))
211 /* Implementation of gdb.InfThread.is_valid (self) -> Boolean.
212 Returns True if this inferior Thread object still exists
216 thpy_is_valid (PyObject *self, PyObject *args)
218 thread_object *thread_obj = (thread_object *) self;
220 if (! thread_obj->thread)
226 /* Return a reference to a new Python object representing a ptid_t.
227 The object is a tuple containing (pid, lwp, tid). */
229 gdbpy_create_ptid_object (ptid_t ptid)
235 ret = PyTuple_New (3);
239 pid = ptid_get_pid (ptid);
240 lwp = ptid_get_lwp (ptid);
241 tid = ptid_get_tid (ptid);
243 PyTuple_SET_ITEM (ret, 0, PyInt_FromLong (pid));
244 PyTuple_SET_ITEM (ret, 1, PyInt_FromLong (lwp));
245 PyTuple_SET_ITEM (ret, 2, PyInt_FromLong (tid));
250 /* Implementation of gdb.selected_thread () -> gdb.InferiorThread.
251 Returns the selected thread object. */
254 gdbpy_selected_thread (PyObject *self, PyObject *args)
256 PyObject *thread_obj;
258 thread_obj = (PyObject *) find_thread_object (inferior_ptid);
261 Py_INCREF (thread_obj);
269 gdbpy_initialize_thread (void)
271 if (PyType_Ready (&thread_object_type) < 0)
274 return gdb_pymodule_addobject (gdb_module, "InferiorThread",
275 (PyObject *) &thread_object_type);
278 static PyGetSetDef thread_object_getset[] =
280 { "name", thpy_get_name, thpy_set_name,
281 "The name of the thread, as set by the user or the OS.", NULL },
282 { "num", thpy_get_num, NULL, "ID of the thread, as assigned by GDB.", NULL },
283 { "ptid", thpy_get_ptid, NULL, "ID of the thread, as assigned by the OS.",
289 static PyMethodDef thread_object_methods[] =
291 { "is_valid", thpy_is_valid, METH_NOARGS,
292 "is_valid () -> Boolean.\n\
293 Return true if this inferior thread is valid, false if not." },
294 { "switch", thpy_switch, METH_NOARGS,
296 Makes this the GDB selected thread." },
297 { "is_stopped", thpy_is_stopped, METH_NOARGS,
298 "is_stopped () -> Boolean\n\
299 Return whether the thread is stopped." },
300 { "is_running", thpy_is_running, METH_NOARGS,
301 "is_running () -> Boolean\n\
302 Return whether the thread is running." },
303 { "is_exited", thpy_is_exited, METH_NOARGS,
304 "is_exited () -> Boolean\n\
305 Return whether the thread is exited." },
310 static PyTypeObject thread_object_type =
312 PyVarObject_HEAD_INIT (NULL, 0)
313 "gdb.InferiorThread", /*tp_name*/
314 sizeof (thread_object), /*tp_basicsize*/
316 thpy_dealloc, /*tp_dealloc*/
323 0, /*tp_as_sequence*/
331 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /*tp_flags*/
332 "GDB thread object", /* tp_doc */
335 0, /* tp_richcompare */
336 0, /* tp_weaklistoffset */
339 thread_object_methods, /* tp_methods */
341 thread_object_getset, /* tp_getset */
344 0, /* tp_descr_get */
345 0, /* tp_descr_set */
346 0, /* tp_dictoffset */