1 /* Python interface to inferior threads.
3 Copyright (C) 2009-2018 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 = (PyObject *) inferior_to_inferior_object (tp->inf);
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);
165 Py_INCREF (thread_obj->inf_obj);
167 return thread_obj->inf_obj;
170 /* Implementation of InferiorThread.switch ().
171 Makes this the GDB selected thread. */
174 thpy_switch (PyObject *self, PyObject *args)
176 thread_object *thread_obj = (thread_object *) self;
178 THPY_REQUIRE_VALID (thread_obj);
182 switch_to_thread (thread_obj->thread);
184 CATCH (except, RETURN_MASK_ALL)
186 GDB_PY_HANDLE_EXCEPTION (except);
193 /* Implementation of InferiorThread.is_stopped () -> Boolean.
194 Return whether the thread is stopped. */
197 thpy_is_stopped (PyObject *self, PyObject *args)
199 thread_object *thread_obj = (thread_object *) self;
201 THPY_REQUIRE_VALID (thread_obj);
203 if (thread_obj->thread->state == THREAD_STOPPED)
209 /* Implementation of InferiorThread.is_running () -> Boolean.
210 Return whether the thread is running. */
213 thpy_is_running (PyObject *self, PyObject *args)
215 thread_object *thread_obj = (thread_object *) self;
217 THPY_REQUIRE_VALID (thread_obj);
219 if (thread_obj->thread->state == THREAD_RUNNING)
225 /* Implementation of InferiorThread.is_exited () -> Boolean.
226 Return whether the thread is exited. */
229 thpy_is_exited (PyObject *self, PyObject *args)
231 thread_object *thread_obj = (thread_object *) self;
233 THPY_REQUIRE_VALID (thread_obj);
235 if (thread_obj->thread->state == THREAD_EXITED)
241 /* Implementation of gdb.InfThread.is_valid (self) -> Boolean.
242 Returns True if this inferior Thread object still exists
246 thpy_is_valid (PyObject *self, PyObject *args)
248 thread_object *thread_obj = (thread_object *) self;
250 if (! thread_obj->thread)
256 /* Return a reference to a new Python object representing a ptid_t.
257 The object is a tuple containing (pid, lwp, tid). */
259 gdbpy_create_ptid_object (ptid_t ptid)
265 ret = PyTuple_New (3);
273 PyTuple_SET_ITEM (ret, 0, PyInt_FromLong (pid));
274 PyTuple_SET_ITEM (ret, 1, PyInt_FromLong (lwp));
275 PyTuple_SET_ITEM (ret, 2, PyInt_FromLong (tid));
280 /* Implementation of gdb.selected_thread () -> gdb.InferiorThread.
281 Returns the selected thread object. */
284 gdbpy_selected_thread (PyObject *self, PyObject *args)
286 if (inferior_ptid != null_ptid)
289 = (PyObject *) thread_to_thread_object (inferior_thread ());
290 if (thread_obj != NULL)
292 Py_INCREF (thread_obj);
301 gdbpy_initialize_thread (void)
303 if (PyType_Ready (&thread_object_type) < 0)
306 return gdb_pymodule_addobject (gdb_module, "InferiorThread",
307 (PyObject *) &thread_object_type);
310 static gdb_PyGetSetDef thread_object_getset[] =
312 { "name", thpy_get_name, thpy_set_name,
313 "The name of the thread, as set by the user or the OS.", NULL },
314 { "num", thpy_get_num, NULL,
315 "Per-inferior number of the thread, as assigned by GDB.", NULL },
316 { "global_num", thpy_get_global_num, NULL,
317 "Global number of the thread, as assigned by GDB.", NULL },
318 { "ptid", thpy_get_ptid, NULL, "ID of the thread, as assigned by the OS.",
320 { "inferior", thpy_get_inferior, NULL,
321 "The Inferior object this thread belongs to.", NULL },
326 static PyMethodDef thread_object_methods[] =
328 { "is_valid", thpy_is_valid, METH_NOARGS,
329 "is_valid () -> Boolean.\n\
330 Return true if this inferior thread is valid, false if not." },
331 { "switch", thpy_switch, METH_NOARGS,
333 Makes this the GDB selected thread." },
334 { "is_stopped", thpy_is_stopped, METH_NOARGS,
335 "is_stopped () -> Boolean\n\
336 Return whether the thread is stopped." },
337 { "is_running", thpy_is_running, METH_NOARGS,
338 "is_running () -> Boolean\n\
339 Return whether the thread is running." },
340 { "is_exited", thpy_is_exited, METH_NOARGS,
341 "is_exited () -> Boolean\n\
342 Return whether the thread is exited." },
347 PyTypeObject thread_object_type =
349 PyVarObject_HEAD_INIT (NULL, 0)
350 "gdb.InferiorThread", /*tp_name*/
351 sizeof (thread_object), /*tp_basicsize*/
353 thpy_dealloc, /*tp_dealloc*/
360 0, /*tp_as_sequence*/
368 Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /*tp_flags*/
369 "GDB thread object", /* tp_doc */
372 0, /* tp_richcompare */
373 0, /* tp_weaklistoffset */
376 thread_object_methods, /* tp_methods */
378 thread_object_getset, /* tp_getset */
381 0, /* tp_descr_get */
382 0, /* tp_descr_set */
383 0, /* tp_dictoffset */