1 /* Python interface to inferior threads.
3 Copyright (C) 2009-2017 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 extern 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;
83 gdb::unique_xmalloc_ptr<char> name;
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)
101 else if (! gdbpy_is_string (newvalue))
103 PyErr_SetString (PyExc_TypeError,
104 _("The value of `name' must be a string."));
109 name = python_string_to_host_string (newvalue);
114 xfree (thread_obj->thread->name);
115 thread_obj->thread->name = name.release ();
120 /* Getter for InferiorThread.num. */
123 thpy_get_num (PyObject *self, void *closure)
125 thread_object *thread_obj = (thread_object *) self;
127 THPY_REQUIRE_VALID (thread_obj);
129 return PyLong_FromLong (thread_obj->thread->per_inf_num);
132 /* Getter for InferiorThread.global_num. */
135 thpy_get_global_num (PyObject *self, void *closure)
137 thread_object *thread_obj = (thread_object *) self;
139 THPY_REQUIRE_VALID (thread_obj);
141 return PyLong_FromLong (thread_obj->thread->global_num);
144 /* Getter for InferiorThread.ptid -> (pid, lwp, tid).
145 Returns a tuple with the thread's ptid components. */
148 thpy_get_ptid (PyObject *self, void *closure)
150 thread_object *thread_obj = (thread_object *) self;
152 THPY_REQUIRE_VALID (thread_obj);
154 return gdbpy_create_ptid_object (thread_obj->thread->ptid);
157 /* Getter for InferiorThread.inferior -> Inferior. */
160 thpy_get_inferior (PyObject *self, void *ignore)
162 thread_object *thread_obj = (thread_object *) self;
164 THPY_REQUIRE_VALID (thread_obj);
166 return thread_obj->inf_obj;
169 /* Implementation of InferiorThread.switch ().
170 Makes this the GDB selected thread. */
173 thpy_switch (PyObject *self, PyObject *args)
175 thread_object *thread_obj = (thread_object *) self;
177 THPY_REQUIRE_VALID (thread_obj);
181 switch_to_thread (thread_obj->thread->ptid);
183 CATCH (except, RETURN_MASK_ALL)
185 GDB_PY_HANDLE_EXCEPTION (except);
192 /* Implementation of InferiorThread.is_stopped () -> Boolean.
193 Return whether the thread is stopped. */
196 thpy_is_stopped (PyObject *self, PyObject *args)
198 thread_object *thread_obj = (thread_object *) self;
200 THPY_REQUIRE_VALID (thread_obj);
202 if (is_stopped (thread_obj->thread->ptid))
208 /* Implementation of InferiorThread.is_running () -> Boolean.
209 Return whether the thread is running. */
212 thpy_is_running (PyObject *self, PyObject *args)
214 thread_object *thread_obj = (thread_object *) self;
216 THPY_REQUIRE_VALID (thread_obj);
218 if (is_running (thread_obj->thread->ptid))
224 /* Implementation of InferiorThread.is_exited () -> Boolean.
225 Return whether the thread is exited. */
228 thpy_is_exited (PyObject *self, PyObject *args)
230 thread_object *thread_obj = (thread_object *) self;
232 THPY_REQUIRE_VALID (thread_obj);
234 if (is_exited (thread_obj->thread->ptid))
240 /* Implementation of gdb.InfThread.is_valid (self) -> Boolean.
241 Returns True if this inferior Thread object still exists
245 thpy_is_valid (PyObject *self, PyObject *args)
247 thread_object *thread_obj = (thread_object *) self;
249 if (! thread_obj->thread)
255 /* Return a reference to a new Python object representing a ptid_t.
256 The object is a tuple containing (pid, lwp, tid). */
258 gdbpy_create_ptid_object (ptid_t ptid)
264 ret = PyTuple_New (3);
268 pid = ptid_get_pid (ptid);
269 lwp = ptid_get_lwp (ptid);
270 tid = ptid_get_tid (ptid);
272 PyTuple_SET_ITEM (ret, 0, PyInt_FromLong (pid));
273 PyTuple_SET_ITEM (ret, 1, PyInt_FromLong (lwp));
274 PyTuple_SET_ITEM (ret, 2, PyInt_FromLong (tid));
279 /* Implementation of gdb.selected_thread () -> gdb.InferiorThread.
280 Returns the selected thread object. */
283 gdbpy_selected_thread (PyObject *self, PyObject *args)
285 PyObject *thread_obj;
287 thread_obj = (PyObject *) find_thread_object (inferior_ptid);
290 Py_INCREF (thread_obj);
298 gdbpy_initialize_thread (void)
300 if (PyType_Ready (&thread_object_type) < 0)
303 return gdb_pymodule_addobject (gdb_module, "InferiorThread",
304 (PyObject *) &thread_object_type);
307 static PyGetSetDef thread_object_getset[] =
309 { "name", thpy_get_name, thpy_set_name,
310 "The name of the thread, as set by the user or the OS.", NULL },
311 { "num", thpy_get_num, NULL,
312 "Per-inferior number of the thread, as assigned by GDB.", NULL },
313 { "global_num", thpy_get_global_num, NULL,
314 "Global number of the thread, as assigned by GDB.", NULL },
315 { "ptid", thpy_get_ptid, NULL, "ID of the thread, as assigned by the OS.",
317 { "inferior", thpy_get_inferior, NULL,
318 "The Inferior object this thread belongs to.", NULL },
323 static PyMethodDef thread_object_methods[] =
325 { "is_valid", thpy_is_valid, METH_NOARGS,
326 "is_valid () -> Boolean.\n\
327 Return true if this inferior thread is valid, false if not." },
328 { "switch", thpy_switch, METH_NOARGS,
330 Makes this the GDB selected thread." },
331 { "is_stopped", thpy_is_stopped, METH_NOARGS,
332 "is_stopped () -> Boolean\n\
333 Return whether the thread is stopped." },
334 { "is_running", thpy_is_running, METH_NOARGS,
335 "is_running () -> Boolean\n\
336 Return whether the thread is running." },
337 { "is_exited", thpy_is_exited, METH_NOARGS,
338 "is_exited () -> Boolean\n\
339 Return whether the thread is exited." },
344 PyTypeObject thread_object_type =
346 PyVarObject_HEAD_INIT (NULL, 0)
347 "gdb.InferiorThread", /*tp_name*/
348 sizeof (thread_object), /*tp_basicsize*/
350 thpy_dealloc, /*tp_dealloc*/
357 0, /*tp_as_sequence*/
365 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /*tp_flags*/
366 "GDB thread object", /* tp_doc */
369 0, /* tp_richcompare */
370 0, /* tp_weaklistoffset */
373 thread_object_methods, /* tp_methods */
375 thread_object_getset, /* tp_getset */
378 0, /* tp_descr_get */
379 0, /* tp_descr_set */
380 0, /* tp_dictoffset */