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595939de PM |
1 | /* Python interface to inferior threads. |
2 | ||
e2882c85 | 3 | Copyright (C) 2009-2018 Free Software Foundation, Inc. |
595939de PM |
4 | |
5 | This file is part of GDB. | |
6 | ||
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. | |
11 | ||
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. | |
16 | ||
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/>. */ | |
19 | ||
20 | #include "defs.h" | |
595939de PM |
21 | #include "gdbthread.h" |
22 | #include "inferior.h" | |
23 | #include "python-internal.h" | |
24 | ||
e36122e9 | 25 | extern PyTypeObject thread_object_type |
62eec1a5 | 26 | CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("thread_object"); |
595939de PM |
27 | |
28 | /* Require that INFERIOR be a valid inferior ID. */ | |
29 | #define THPY_REQUIRE_VALID(Thread) \ | |
30 | do { \ | |
31 | if (!Thread->thread) \ | |
32 | { \ | |
33 | PyErr_SetString (PyExc_RuntimeError, \ | |
34 | _("Thread no longer exists.")); \ | |
35 | return NULL; \ | |
36 | } \ | |
37 | } while (0) | |
38 | ||
595939de PM |
39 | thread_object * |
40 | create_thread_object (struct thread_info *tp) | |
41 | { | |
42 | thread_object *thread_obj; | |
43 | ||
44 | thread_obj = PyObject_New (thread_object, &thread_object_type); | |
45 | if (!thread_obj) | |
46 | return NULL; | |
47 | ||
48 | thread_obj->thread = tp; | |
00431a78 | 49 | thread_obj->inf_obj = (PyObject *) inferior_to_inferior_object (tp->inf); |
595939de PM |
50 | |
51 | return thread_obj; | |
52 | } | |
53 | ||
595939de PM |
54 | static void |
55 | thpy_dealloc (PyObject *self) | |
56 | { | |
57 | Py_DECREF (((thread_object *) self)->inf_obj); | |
9a27f2c6 | 58 | Py_TYPE (self)->tp_free (self); |
595939de PM |
59 | } |
60 | ||
4694da01 TT |
61 | static PyObject * |
62 | thpy_get_name (PyObject *self, void *ignore) | |
63 | { | |
64 | thread_object *thread_obj = (thread_object *) self; | |
73ede765 | 65 | const char *name; |
4694da01 TT |
66 | |
67 | THPY_REQUIRE_VALID (thread_obj); | |
68 | ||
69 | name = thread_obj->thread->name; | |
70 | if (name == NULL) | |
71 | name = target_thread_name (thread_obj->thread); | |
72 | ||
73 | if (name == NULL) | |
74 | Py_RETURN_NONE; | |
75 | ||
76 | return PyString_FromString (name); | |
77 | } | |
78 | ||
79 | static int | |
80 | thpy_set_name (PyObject *self, PyObject *newvalue, void *ignore) | |
81 | { | |
82 | thread_object *thread_obj = (thread_object *) self; | |
9b972014 | 83 | gdb::unique_xmalloc_ptr<char> name; |
4694da01 TT |
84 | |
85 | if (! thread_obj->thread) | |
86 | { | |
87 | PyErr_SetString (PyExc_RuntimeError, _("Thread no longer exists.")); | |
88 | return -1; | |
89 | } | |
90 | ||
91 | if (newvalue == NULL) | |
92 | { | |
256458bc | 93 | PyErr_SetString (PyExc_TypeError, |
4694da01 TT |
94 | _("Cannot delete `name' attribute.")); |
95 | return -1; | |
96 | } | |
97 | else if (newvalue == Py_None) | |
9b972014 TT |
98 | { |
99 | /* Nothing. */ | |
100 | } | |
4694da01 TT |
101 | else if (! gdbpy_is_string (newvalue)) |
102 | { | |
103 | PyErr_SetString (PyExc_TypeError, | |
104 | _("The value of `name' must be a string.")); | |
105 | return -1; | |
106 | } | |
107 | else | |
108 | { | |
109 | name = python_string_to_host_string (newvalue); | |
110 | if (! name) | |
111 | return -1; | |
112 | } | |
113 | ||
114 | xfree (thread_obj->thread->name); | |
9b972014 | 115 | thread_obj->thread->name = name.release (); |
4694da01 TT |
116 | |
117 | return 0; | |
118 | } | |
119 | ||
5d5658a1 PA |
120 | /* Getter for InferiorThread.num. */ |
121 | ||
595939de PM |
122 | static PyObject * |
123 | thpy_get_num (PyObject *self, void *closure) | |
124 | { | |
125 | thread_object *thread_obj = (thread_object *) self; | |
126 | ||
127 | THPY_REQUIRE_VALID (thread_obj); | |
128 | ||
5d5658a1 | 129 | return PyLong_FromLong (thread_obj->thread->per_inf_num); |
595939de PM |
130 | } |
131 | ||
22a02324 PA |
132 | /* Getter for InferiorThread.global_num. */ |
133 | ||
134 | static PyObject * | |
135 | thpy_get_global_num (PyObject *self, void *closure) | |
136 | { | |
137 | thread_object *thread_obj = (thread_object *) self; | |
138 | ||
139 | THPY_REQUIRE_VALID (thread_obj); | |
140 | ||
141 | return PyLong_FromLong (thread_obj->thread->global_num); | |
142 | } | |
143 | ||
595939de PM |
144 | /* Getter for InferiorThread.ptid -> (pid, lwp, tid). |
145 | Returns a tuple with the thread's ptid components. */ | |
007baf27 | 146 | |
595939de PM |
147 | static PyObject * |
148 | thpy_get_ptid (PyObject *self, void *closure) | |
149 | { | |
595939de | 150 | thread_object *thread_obj = (thread_object *) self; |
595939de PM |
151 | |
152 | THPY_REQUIRE_VALID (thread_obj); | |
153 | ||
162078c8 | 154 | return gdbpy_create_ptid_object (thread_obj->thread->ptid); |
595939de PM |
155 | } |
156 | ||
84654457 PA |
157 | /* Getter for InferiorThread.inferior -> Inferior. */ |
158 | ||
159 | static PyObject * | |
160 | thpy_get_inferior (PyObject *self, void *ignore) | |
161 | { | |
162 | thread_object *thread_obj = (thread_object *) self; | |
163 | ||
164 | THPY_REQUIRE_VALID (thread_obj); | |
484d8d36 | 165 | Py_INCREF (thread_obj->inf_obj); |
84654457 PA |
166 | |
167 | return thread_obj->inf_obj; | |
168 | } | |
169 | ||
595939de PM |
170 | /* Implementation of InferiorThread.switch (). |
171 | Makes this the GDB selected thread. */ | |
007baf27 | 172 | |
595939de PM |
173 | static PyObject * |
174 | thpy_switch (PyObject *self, PyObject *args) | |
175 | { | |
176 | thread_object *thread_obj = (thread_object *) self; | |
595939de PM |
177 | |
178 | THPY_REQUIRE_VALID (thread_obj); | |
179 | ||
492d29ea | 180 | TRY |
595939de | 181 | { |
00431a78 | 182 | switch_to_thread (thread_obj->thread); |
595939de | 183 | } |
492d29ea PA |
184 | CATCH (except, RETURN_MASK_ALL) |
185 | { | |
186 | GDB_PY_HANDLE_EXCEPTION (except); | |
187 | } | |
188 | END_CATCH | |
595939de PM |
189 | |
190 | Py_RETURN_NONE; | |
191 | } | |
192 | ||
193 | /* Implementation of InferiorThread.is_stopped () -> Boolean. | |
194 | Return whether the thread is stopped. */ | |
007baf27 | 195 | |
595939de PM |
196 | static PyObject * |
197 | thpy_is_stopped (PyObject *self, PyObject *args) | |
198 | { | |
199 | thread_object *thread_obj = (thread_object *) self; | |
200 | ||
201 | THPY_REQUIRE_VALID (thread_obj); | |
202 | ||
00431a78 | 203 | if (thread_obj->thread->state == THREAD_STOPPED) |
595939de PM |
204 | Py_RETURN_TRUE; |
205 | ||
206 | Py_RETURN_FALSE; | |
207 | } | |
208 | ||
209 | /* Implementation of InferiorThread.is_running () -> Boolean. | |
210 | Return whether the thread is running. */ | |
007baf27 | 211 | |
595939de PM |
212 | static PyObject * |
213 | thpy_is_running (PyObject *self, PyObject *args) | |
214 | { | |
215 | thread_object *thread_obj = (thread_object *) self; | |
216 | ||
217 | THPY_REQUIRE_VALID (thread_obj); | |
218 | ||
00431a78 | 219 | if (thread_obj->thread->state == THREAD_RUNNING) |
595939de PM |
220 | Py_RETURN_TRUE; |
221 | ||
222 | Py_RETURN_FALSE; | |
223 | } | |
224 | ||
225 | /* Implementation of InferiorThread.is_exited () -> Boolean. | |
226 | Return whether the thread is exited. */ | |
007baf27 | 227 | |
595939de PM |
228 | static PyObject * |
229 | thpy_is_exited (PyObject *self, PyObject *args) | |
230 | { | |
231 | thread_object *thread_obj = (thread_object *) self; | |
232 | ||
233 | THPY_REQUIRE_VALID (thread_obj); | |
234 | ||
00431a78 | 235 | if (thread_obj->thread->state == THREAD_EXITED) |
595939de PM |
236 | Py_RETURN_TRUE; |
237 | ||
238 | Py_RETURN_FALSE; | |
239 | } | |
240 | ||
29703da4 PM |
241 | /* Implementation of gdb.InfThread.is_valid (self) -> Boolean. |
242 | Returns True if this inferior Thread object still exists | |
243 | in GDB. */ | |
595939de | 244 | |
29703da4 PM |
245 | static PyObject * |
246 | thpy_is_valid (PyObject *self, PyObject *args) | |
247 | { | |
248 | thread_object *thread_obj = (thread_object *) self; | |
249 | ||
250 | if (! thread_obj->thread) | |
251 | Py_RETURN_FALSE; | |
252 | ||
253 | Py_RETURN_TRUE; | |
254 | } | |
595939de | 255 | |
162078c8 NB |
256 | /* Return a reference to a new Python object representing a ptid_t. |
257 | The object is a tuple containing (pid, lwp, tid). */ | |
258 | PyObject * | |
259 | gdbpy_create_ptid_object (ptid_t ptid) | |
260 | { | |
261 | int pid; | |
262 | long tid, lwp; | |
263 | PyObject *ret; | |
264 | ||
265 | ret = PyTuple_New (3); | |
266 | if (!ret) | |
267 | return NULL; | |
268 | ||
e99b03dc | 269 | pid = ptid.pid (); |
162078c8 NB |
270 | lwp = ptid_get_lwp (ptid); |
271 | tid = ptid_get_tid (ptid); | |
272 | ||
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)); | |
276 | ||
277 | return ret; | |
278 | } | |
279 | ||
595939de PM |
280 | /* Implementation of gdb.selected_thread () -> gdb.InferiorThread. |
281 | Returns the selected thread object. */ | |
007baf27 | 282 | |
595939de PM |
283 | PyObject * |
284 | gdbpy_selected_thread (PyObject *self, PyObject *args) | |
285 | { | |
00431a78 | 286 | if (inferior_ptid != null_ptid) |
595939de | 287 | { |
00431a78 PA |
288 | PyObject *thread_obj |
289 | = (PyObject *) thread_to_thread_object (inferior_thread ()); | |
290 | if (thread_obj != NULL) | |
291 | { | |
292 | Py_INCREF (thread_obj); | |
293 | return thread_obj; | |
294 | } | |
595939de PM |
295 | } |
296 | ||
297 | Py_RETURN_NONE; | |
298 | } | |
299 | ||
999633ed | 300 | int |
595939de PM |
301 | gdbpy_initialize_thread (void) |
302 | { | |
303 | if (PyType_Ready (&thread_object_type) < 0) | |
999633ed | 304 | return -1; |
595939de | 305 | |
aa36459a TT |
306 | return gdb_pymodule_addobject (gdb_module, "InferiorThread", |
307 | (PyObject *) &thread_object_type); | |
595939de PM |
308 | } |
309 | ||
0d1f4ceb | 310 | static gdb_PyGetSetDef thread_object_getset[] = |
595939de | 311 | { |
4694da01 TT |
312 | { "name", thpy_get_name, thpy_set_name, |
313 | "The name of the thread, as set by the user or the OS.", NULL }, | |
5d5658a1 PA |
314 | { "num", thpy_get_num, NULL, |
315 | "Per-inferior number of the thread, as assigned by GDB.", NULL }, | |
22a02324 PA |
316 | { "global_num", thpy_get_global_num, NULL, |
317 | "Global number of the thread, as assigned by GDB.", NULL }, | |
595939de PM |
318 | { "ptid", thpy_get_ptid, NULL, "ID of the thread, as assigned by the OS.", |
319 | NULL }, | |
84654457 PA |
320 | { "inferior", thpy_get_inferior, NULL, |
321 | "The Inferior object this thread belongs to.", NULL }, | |
595939de PM |
322 | |
323 | { NULL } | |
324 | }; | |
325 | ||
326 | static PyMethodDef thread_object_methods[] = | |
327 | { | |
29703da4 PM |
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." }, | |
595939de PM |
331 | { "switch", thpy_switch, METH_NOARGS, |
332 | "switch ()\n\ | |
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." }, | |
343 | ||
344 | { NULL } | |
345 | }; | |
346 | ||
e36122e9 | 347 | PyTypeObject thread_object_type = |
595939de | 348 | { |
9a27f2c6 | 349 | PyVarObject_HEAD_INIT (NULL, 0) |
595939de PM |
350 | "gdb.InferiorThread", /*tp_name*/ |
351 | sizeof (thread_object), /*tp_basicsize*/ | |
352 | 0, /*tp_itemsize*/ | |
353 | thpy_dealloc, /*tp_dealloc*/ | |
354 | 0, /*tp_print*/ | |
355 | 0, /*tp_getattr*/ | |
356 | 0, /*tp_setattr*/ | |
357 | 0, /*tp_compare*/ | |
358 | 0, /*tp_repr*/ | |
359 | 0, /*tp_as_number*/ | |
360 | 0, /*tp_as_sequence*/ | |
361 | 0, /*tp_as_mapping*/ | |
362 | 0, /*tp_hash */ | |
363 | 0, /*tp_call*/ | |
364 | 0, /*tp_str*/ | |
365 | 0, /*tp_getattro*/ | |
366 | 0, /*tp_setattro*/ | |
367 | 0, /*tp_as_buffer*/ | |
368 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /*tp_flags*/ | |
369 | "GDB thread object", /* tp_doc */ | |
370 | 0, /* tp_traverse */ | |
371 | 0, /* tp_clear */ | |
372 | 0, /* tp_richcompare */ | |
373 | 0, /* tp_weaklistoffset */ | |
374 | 0, /* tp_iter */ | |
375 | 0, /* tp_iternext */ | |
376 | thread_object_methods, /* tp_methods */ | |
377 | 0, /* tp_members */ | |
378 | thread_object_getset, /* tp_getset */ | |
379 | 0, /* tp_base */ | |
380 | 0, /* tp_dict */ | |
381 | 0, /* tp_descr_get */ | |
382 | 0, /* tp_descr_set */ | |
383 | 0, /* tp_dictoffset */ | |
384 | 0, /* tp_init */ | |
385 | 0 /* tp_alloc */ | |
386 | }; |