1 /* Python interface to inferior threads.
3 Copyright (C) 2009-2019 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 gdbpy_ref<inferior_object> inf_obj = inferior_to_inferior_object (tp->inf);
48 thread_obj = PyObject_New (thread_object, &thread_object_type);
52 thread_obj->thread = tp;
53 thread_obj->inf_obj = (PyObject *) inf_obj.release ();
59 thpy_dealloc (PyObject *self)
61 Py_DECREF (((thread_object *) self)->inf_obj);
62 Py_TYPE (self)->tp_free (self);
66 thpy_get_name (PyObject *self, void *ignore)
68 thread_object *thread_obj = (thread_object *) self;
71 THPY_REQUIRE_VALID (thread_obj);
73 name = thread_obj->thread->name;
75 name = target_thread_name (thread_obj->thread);
80 return PyString_FromString (name);
84 thpy_set_name (PyObject *self, PyObject *newvalue, void *ignore)
86 thread_object *thread_obj = (thread_object *) self;
87 gdb::unique_xmalloc_ptr<char> name;
89 if (! thread_obj->thread)
91 PyErr_SetString (PyExc_RuntimeError, _("Thread no longer exists."));
97 PyErr_SetString (PyExc_TypeError,
98 _("Cannot delete `name' attribute."));
101 else if (newvalue == Py_None)
105 else if (! gdbpy_is_string (newvalue))
107 PyErr_SetString (PyExc_TypeError,
108 _("The value of `name' must be a string."));
113 name = python_string_to_host_string (newvalue);
118 xfree (thread_obj->thread->name);
119 thread_obj->thread->name = name.release ();
124 /* Getter for InferiorThread.num. */
127 thpy_get_num (PyObject *self, void *closure)
129 thread_object *thread_obj = (thread_object *) self;
131 THPY_REQUIRE_VALID (thread_obj);
133 return PyLong_FromLong (thread_obj->thread->per_inf_num);
136 /* Getter for InferiorThread.global_num. */
139 thpy_get_global_num (PyObject *self, void *closure)
141 thread_object *thread_obj = (thread_object *) self;
143 THPY_REQUIRE_VALID (thread_obj);
145 return PyLong_FromLong (thread_obj->thread->global_num);
148 /* Getter for InferiorThread.ptid -> (pid, lwp, tid).
149 Returns a tuple with the thread's ptid components. */
152 thpy_get_ptid (PyObject *self, void *closure)
154 thread_object *thread_obj = (thread_object *) self;
156 THPY_REQUIRE_VALID (thread_obj);
158 return gdbpy_create_ptid_object (thread_obj->thread->ptid);
161 /* Getter for InferiorThread.inferior -> Inferior. */
164 thpy_get_inferior (PyObject *self, void *ignore)
166 thread_object *thread_obj = (thread_object *) self;
168 THPY_REQUIRE_VALID (thread_obj);
169 Py_INCREF (thread_obj->inf_obj);
171 return thread_obj->inf_obj;
174 /* Implementation of InferiorThread.switch ().
175 Makes this the GDB selected thread. */
178 thpy_switch (PyObject *self, PyObject *args)
180 thread_object *thread_obj = (thread_object *) self;
182 THPY_REQUIRE_VALID (thread_obj);
186 switch_to_thread (thread_obj->thread);
188 CATCH (except, RETURN_MASK_ALL)
190 GDB_PY_HANDLE_EXCEPTION (except);
197 /* Implementation of InferiorThread.is_stopped () -> Boolean.
198 Return whether the thread is stopped. */
201 thpy_is_stopped (PyObject *self, PyObject *args)
203 thread_object *thread_obj = (thread_object *) self;
205 THPY_REQUIRE_VALID (thread_obj);
207 if (thread_obj->thread->state == THREAD_STOPPED)
213 /* Implementation of InferiorThread.is_running () -> Boolean.
214 Return whether the thread is running. */
217 thpy_is_running (PyObject *self, PyObject *args)
219 thread_object *thread_obj = (thread_object *) self;
221 THPY_REQUIRE_VALID (thread_obj);
223 if (thread_obj->thread->state == THREAD_RUNNING)
229 /* Implementation of InferiorThread.is_exited () -> Boolean.
230 Return whether the thread is exited. */
233 thpy_is_exited (PyObject *self, PyObject *args)
235 thread_object *thread_obj = (thread_object *) self;
237 THPY_REQUIRE_VALID (thread_obj);
239 if (thread_obj->thread->state == THREAD_EXITED)
245 /* Implementation of gdb.InfThread.is_valid (self) -> Boolean.
246 Returns True if this inferior Thread object still exists
250 thpy_is_valid (PyObject *self, PyObject *args)
252 thread_object *thread_obj = (thread_object *) self;
254 if (! thread_obj->thread)
260 /* Return a reference to a new Python object representing a ptid_t.
261 The object is a tuple containing (pid, lwp, tid). */
263 gdbpy_create_ptid_object (ptid_t ptid)
269 ret = PyTuple_New (3);
277 PyTuple_SET_ITEM (ret, 0, PyInt_FromLong (pid));
278 PyTuple_SET_ITEM (ret, 1, PyInt_FromLong (lwp));
279 PyTuple_SET_ITEM (ret, 2, PyInt_FromLong (tid));
284 /* Implementation of gdb.selected_thread () -> gdb.InferiorThread.
285 Returns the selected thread object. */
288 gdbpy_selected_thread (PyObject *self, PyObject *args)
290 if (inferior_ptid != null_ptid)
291 return thread_to_thread_object (inferior_thread ()).release ();
297 gdbpy_initialize_thread (void)
299 if (PyType_Ready (&thread_object_type) < 0)
302 return gdb_pymodule_addobject (gdb_module, "InferiorThread",
303 (PyObject *) &thread_object_type);
306 static gdb_PyGetSetDef thread_object_getset[] =
308 { "name", thpy_get_name, thpy_set_name,
309 "The name of the thread, as set by the user or the OS.", NULL },
310 { "num", thpy_get_num, NULL,
311 "Per-inferior number of the thread, as assigned by GDB.", NULL },
312 { "global_num", thpy_get_global_num, NULL,
313 "Global number of the thread, as assigned by GDB.", NULL },
314 { "ptid", thpy_get_ptid, NULL, "ID of the thread, as assigned by the OS.",
316 { "inferior", thpy_get_inferior, NULL,
317 "The Inferior object this thread belongs to.", NULL },
322 static PyMethodDef thread_object_methods[] =
324 { "is_valid", thpy_is_valid, METH_NOARGS,
325 "is_valid () -> Boolean.\n\
326 Return true if this inferior thread is valid, false if not." },
327 { "switch", thpy_switch, METH_NOARGS,
329 Makes this the GDB selected thread." },
330 { "is_stopped", thpy_is_stopped, METH_NOARGS,
331 "is_stopped () -> Boolean\n\
332 Return whether the thread is stopped." },
333 { "is_running", thpy_is_running, METH_NOARGS,
334 "is_running () -> Boolean\n\
335 Return whether the thread is running." },
336 { "is_exited", thpy_is_exited, METH_NOARGS,
337 "is_exited () -> Boolean\n\
338 Return whether the thread is exited." },
343 PyTypeObject thread_object_type =
345 PyVarObject_HEAD_INIT (NULL, 0)
346 "gdb.InferiorThread", /*tp_name*/
347 sizeof (thread_object), /*tp_basicsize*/
349 thpy_dealloc, /*tp_dealloc*/
356 0, /*tp_as_sequence*/
364 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /*tp_flags*/
365 "GDB thread object", /* tp_doc */
368 0, /* tp_richcompare */
369 0, /* tp_weaklistoffset */
372 thread_object_methods, /* tp_methods */
374 thread_object_getset, /* tp_getset */
377 0, /* tp_descr_get */
378 0, /* tp_descr_set */
379 0, /* tp_dictoffset */