Guido van Rossum | f70e43a | 1991-02-19 12:39:46 +0000 | [diff] [blame] | 1 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 2 | /* Traceback implementation */ |
| 3 | |
Guido van Rossum | 65bf9f2 | 1997-04-29 18:33:38 +0000 | [diff] [blame] | 4 | #include "Python.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 5 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 6 | #include "code.h" |
Victor Stinner | 7036477 | 2020-04-29 03:28:46 +0200 | [diff] [blame] | 7 | #include "frameobject.h" // PyFrame_GetBack() |
Victor Stinner | 4a21e57 | 2020-04-15 02:35:41 +0200 | [diff] [blame] | 8 | #include "structmember.h" // PyMemberDef |
Victor Stinner | 361dcdc | 2020-04-15 03:24:57 +0200 | [diff] [blame] | 9 | #include "osdefs.h" // SEP |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 10 | #ifdef HAVE_FCNTL_H |
| 11 | #include <fcntl.h> |
| 12 | #endif |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 13 | |
Nicholas Bastin | a7604bf | 2004-03-21 18:37:23 +0000 | [diff] [blame] | 14 | #define OFF(x) offsetof(PyTracebackObject, x) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 15 | |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 16 | #define PUTS(fd, str) _Py_write_noraise(fd, str, (int)strlen(str)) |
Victor Stinner | 54f939b | 2012-07-30 13:08:58 +0200 | [diff] [blame] | 17 | #define MAX_STRING_LENGTH 500 |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 18 | #define MAX_FRAME_DEPTH 100 |
| 19 | #define MAX_NTHREADS 100 |
| 20 | |
Victor Stinner | fe7c5b5 | 2011-04-05 01:48:03 +0200 | [diff] [blame] | 21 | /* Function from Parser/tokenizer.c */ |
| 22 | extern char * PyTokenizer_FindEncodingFilename(int, PyObject *); |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 23 | |
Victor Stinner | bd303c1 | 2013-11-07 23:07:29 +0100 | [diff] [blame] | 24 | _Py_IDENTIFIER(TextIOWrapper); |
| 25 | _Py_IDENTIFIER(close); |
| 26 | _Py_IDENTIFIER(open); |
| 27 | _Py_IDENTIFIER(path); |
| 28 | |
Nathaniel J. Smith | e46a8af | 2018-01-07 05:30:18 -0800 | [diff] [blame] | 29 | /*[clinic input] |
| 30 | class TracebackType "PyTracebackObject *" "&PyTraceback_Type" |
| 31 | [clinic start generated code]*/ |
| 32 | /*[clinic end generated code: output=da39a3ee5e6b4b0d input=928fa06c10151120]*/ |
| 33 | |
| 34 | #include "clinic/traceback.c.h" |
| 35 | |
| 36 | static PyObject * |
| 37 | tb_create_raw(PyTracebackObject *next, PyFrameObject *frame, int lasti, |
| 38 | int lineno) |
| 39 | { |
| 40 | PyTracebackObject *tb; |
| 41 | if ((next != NULL && !PyTraceBack_Check(next)) || |
| 42 | frame == NULL || !PyFrame_Check(frame)) { |
| 43 | PyErr_BadInternalCall(); |
| 44 | return NULL; |
| 45 | } |
| 46 | tb = PyObject_GC_New(PyTracebackObject, &PyTraceBack_Type); |
| 47 | if (tb != NULL) { |
| 48 | Py_XINCREF(next); |
| 49 | tb->tb_next = next; |
| 50 | Py_XINCREF(frame); |
| 51 | tb->tb_frame = frame; |
| 52 | tb->tb_lasti = lasti; |
| 53 | tb->tb_lineno = lineno; |
| 54 | PyObject_GC_Track(tb); |
| 55 | } |
| 56 | return (PyObject *)tb; |
| 57 | } |
| 58 | |
| 59 | /*[clinic input] |
| 60 | @classmethod |
| 61 | TracebackType.__new__ as tb_new |
| 62 | |
| 63 | tb_next: object |
| 64 | tb_frame: object(type='PyFrameObject *', subclass_of='&PyFrame_Type') |
| 65 | tb_lasti: int |
| 66 | tb_lineno: int |
| 67 | |
| 68 | Create a new traceback object. |
| 69 | [clinic start generated code]*/ |
| 70 | |
| 71 | static PyObject * |
| 72 | tb_new_impl(PyTypeObject *type, PyObject *tb_next, PyFrameObject *tb_frame, |
| 73 | int tb_lasti, int tb_lineno) |
| 74 | /*[clinic end generated code: output=fa077debd72d861a input=01cbe8ec8783fca7]*/ |
| 75 | { |
| 76 | if (tb_next == Py_None) { |
| 77 | tb_next = NULL; |
| 78 | } else if (!PyTraceBack_Check(tb_next)) { |
| 79 | return PyErr_Format(PyExc_TypeError, |
| 80 | "expected traceback object or None, got '%s'", |
| 81 | Py_TYPE(tb_next)->tp_name); |
| 82 | } |
| 83 | |
| 84 | return tb_create_raw((PyTracebackObject *)tb_next, tb_frame, tb_lasti, |
| 85 | tb_lineno); |
| 86 | } |
| 87 | |
Collin Winter | 3eed765 | 2007-08-14 17:53:54 +0000 | [diff] [blame] | 88 | static PyObject * |
Siddhesh Poyarekar | 55edd0c | 2018-04-30 00:29:33 +0530 | [diff] [blame] | 89 | tb_dir(PyTracebackObject *self, PyObject *Py_UNUSED(ignored)) |
Collin Winter | 3eed765 | 2007-08-14 17:53:54 +0000 | [diff] [blame] | 90 | { |
| 91 | return Py_BuildValue("[ssss]", "tb_frame", "tb_next", |
| 92 | "tb_lasti", "tb_lineno"); |
| 93 | } |
| 94 | |
Nathaniel J. Smith | e46a8af | 2018-01-07 05:30:18 -0800 | [diff] [blame] | 95 | static PyObject * |
| 96 | tb_next_get(PyTracebackObject *self, void *Py_UNUSED(_)) |
| 97 | { |
| 98 | PyObject* ret = (PyObject*)self->tb_next; |
| 99 | if (!ret) { |
| 100 | ret = Py_None; |
| 101 | } |
| 102 | Py_INCREF(ret); |
| 103 | return ret; |
| 104 | } |
| 105 | |
| 106 | static int |
| 107 | tb_next_set(PyTracebackObject *self, PyObject *new_next, void *Py_UNUSED(_)) |
| 108 | { |
| 109 | if (!new_next) { |
| 110 | PyErr_Format(PyExc_TypeError, "can't delete tb_next attribute"); |
| 111 | return -1; |
| 112 | } |
| 113 | |
| 114 | /* We accept None or a traceback object, and map None -> NULL (inverse of |
| 115 | tb_next_get) */ |
| 116 | if (new_next == Py_None) { |
| 117 | new_next = NULL; |
| 118 | } else if (!PyTraceBack_Check(new_next)) { |
| 119 | PyErr_Format(PyExc_TypeError, |
| 120 | "expected traceback object, got '%s'", |
| 121 | Py_TYPE(new_next)->tp_name); |
| 122 | return -1; |
| 123 | } |
| 124 | |
| 125 | /* Check for loops */ |
| 126 | PyTracebackObject *cursor = (PyTracebackObject *)new_next; |
| 127 | while (cursor) { |
| 128 | if (cursor == self) { |
| 129 | PyErr_Format(PyExc_ValueError, "traceback loop detected"); |
| 130 | return -1; |
| 131 | } |
| 132 | cursor = cursor->tb_next; |
| 133 | } |
| 134 | |
| 135 | PyObject *old_next = (PyObject*)self->tb_next; |
| 136 | Py_XINCREF(new_next); |
| 137 | self->tb_next = (PyTracebackObject *)new_next; |
| 138 | Py_XDECREF(old_next); |
| 139 | |
| 140 | return 0; |
| 141 | } |
| 142 | |
| 143 | |
Collin Winter | 3eed765 | 2007-08-14 17:53:54 +0000 | [diff] [blame] | 144 | static PyMethodDef tb_methods[] = { |
| 145 | {"__dir__", (PyCFunction)tb_dir, METH_NOARGS}, |
| 146 | {NULL, NULL, 0, NULL}, |
| 147 | }; |
| 148 | |
Neal Norwitz | 8dfc4a9 | 2007-08-11 06:39:53 +0000 | [diff] [blame] | 149 | static PyMemberDef tb_memberlist[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 150 | {"tb_frame", T_OBJECT, OFF(tb_frame), READONLY}, |
| 151 | {"tb_lasti", T_INT, OFF(tb_lasti), READONLY}, |
| 152 | {"tb_lineno", T_INT, OFF(tb_lineno), READONLY}, |
| 153 | {NULL} /* Sentinel */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 154 | }; |
| 155 | |
Nathaniel J. Smith | e46a8af | 2018-01-07 05:30:18 -0800 | [diff] [blame] | 156 | static PyGetSetDef tb_getsetters[] = { |
| 157 | {"tb_next", (getter)tb_next_get, (setter)tb_next_set, NULL, NULL}, |
| 158 | {NULL} /* Sentinel */ |
| 159 | }; |
| 160 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 161 | static void |
Nicholas Bastin | a7604bf | 2004-03-21 18:37:23 +0000 | [diff] [blame] | 162 | tb_dealloc(PyTracebackObject *tb) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 163 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 164 | PyObject_GC_UnTrack(tb); |
Jeroen Demeyer | 351c674 | 2019-05-10 19:21:11 +0200 | [diff] [blame] | 165 | Py_TRASHCAN_BEGIN(tb, tb_dealloc) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 166 | Py_XDECREF(tb->tb_next); |
| 167 | Py_XDECREF(tb->tb_frame); |
| 168 | PyObject_GC_Del(tb); |
Jeroen Demeyer | 351c674 | 2019-05-10 19:21:11 +0200 | [diff] [blame] | 169 | Py_TRASHCAN_END |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 170 | } |
| 171 | |
Jeremy Hylton | fd14d8e | 2001-10-22 22:17:41 +0000 | [diff] [blame] | 172 | static int |
Nicholas Bastin | a7604bf | 2004-03-21 18:37:23 +0000 | [diff] [blame] | 173 | tb_traverse(PyTracebackObject *tb, visitproc visit, void *arg) |
Jeremy Hylton | fd14d8e | 2001-10-22 22:17:41 +0000 | [diff] [blame] | 174 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 175 | Py_VISIT(tb->tb_next); |
| 176 | Py_VISIT(tb->tb_frame); |
| 177 | return 0; |
Jeremy Hylton | fd14d8e | 2001-10-22 22:17:41 +0000 | [diff] [blame] | 178 | } |
| 179 | |
Serhiy Storchaka | d4f9cf5 | 2018-11-27 19:34:35 +0200 | [diff] [blame] | 180 | static int |
Nicholas Bastin | a7604bf | 2004-03-21 18:37:23 +0000 | [diff] [blame] | 181 | tb_clear(PyTracebackObject *tb) |
Jeremy Hylton | fd14d8e | 2001-10-22 22:17:41 +0000 | [diff] [blame] | 182 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 183 | Py_CLEAR(tb->tb_next); |
| 184 | Py_CLEAR(tb->tb_frame); |
Serhiy Storchaka | d4f9cf5 | 2018-11-27 19:34:35 +0200 | [diff] [blame] | 185 | return 0; |
Jeremy Hylton | fd14d8e | 2001-10-22 22:17:41 +0000 | [diff] [blame] | 186 | } |
| 187 | |
Tim Peters | d7c3652 | 2001-10-22 19:34:09 +0000 | [diff] [blame] | 188 | PyTypeObject PyTraceBack_Type = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 189 | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 190 | "traceback", |
| 191 | sizeof(PyTracebackObject), |
| 192 | 0, |
| 193 | (destructor)tb_dealloc, /*tp_dealloc*/ |
Jeroen Demeyer | 530f506 | 2019-05-31 04:13:39 +0200 | [diff] [blame] | 194 | 0, /*tp_vectorcall_offset*/ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 195 | 0, /*tp_getattr*/ |
| 196 | 0, /*tp_setattr*/ |
Jeroen Demeyer | 530f506 | 2019-05-31 04:13:39 +0200 | [diff] [blame] | 197 | 0, /*tp_as_async*/ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 198 | 0, /*tp_repr*/ |
| 199 | 0, /*tp_as_number*/ |
| 200 | 0, /*tp_as_sequence*/ |
| 201 | 0, /*tp_as_mapping*/ |
| 202 | 0, /* tp_hash */ |
| 203 | 0, /* tp_call */ |
| 204 | 0, /* tp_str */ |
| 205 | PyObject_GenericGetAttr, /* tp_getattro */ |
| 206 | 0, /* tp_setattro */ |
| 207 | 0, /* tp_as_buffer */ |
| 208 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */ |
Nathaniel J. Smith | e46a8af | 2018-01-07 05:30:18 -0800 | [diff] [blame] | 209 | tb_new__doc__, /* tp_doc */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 210 | (traverseproc)tb_traverse, /* tp_traverse */ |
| 211 | (inquiry)tb_clear, /* tp_clear */ |
| 212 | 0, /* tp_richcompare */ |
| 213 | 0, /* tp_weaklistoffset */ |
| 214 | 0, /* tp_iter */ |
| 215 | 0, /* tp_iternext */ |
| 216 | tb_methods, /* tp_methods */ |
| 217 | tb_memberlist, /* tp_members */ |
Nathaniel J. Smith | e46a8af | 2018-01-07 05:30:18 -0800 | [diff] [blame] | 218 | tb_getsetters, /* tp_getset */ |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 219 | 0, /* tp_base */ |
| 220 | 0, /* tp_dict */ |
Nathaniel J. Smith | e46a8af | 2018-01-07 05:30:18 -0800 | [diff] [blame] | 221 | 0, /* tp_descr_get */ |
| 222 | 0, /* tp_descr_set */ |
| 223 | 0, /* tp_dictoffset */ |
| 224 | 0, /* tp_init */ |
| 225 | 0, /* tp_alloc */ |
| 226 | tb_new, /* tp_new */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 227 | }; |
| 228 | |
Victor Stinner | df22c03 | 2019-05-23 01:00:58 +0200 | [diff] [blame] | 229 | |
| 230 | PyObject* |
| 231 | _PyTraceBack_FromFrame(PyObject *tb_next, PyFrameObject *frame) |
| 232 | { |
| 233 | assert(tb_next == NULL || PyTraceBack_Check(tb_next)); |
| 234 | assert(frame != NULL); |
| 235 | |
| 236 | return tb_create_raw((PyTracebackObject *)tb_next, frame, frame->f_lasti, |
| 237 | PyFrame_GetLineNumber(frame)); |
| 238 | } |
| 239 | |
| 240 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 241 | int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 242 | PyTraceBack_Here(PyFrameObject *frame) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 243 | { |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 244 | PyObject *exc, *val, *tb, *newtb; |
| 245 | PyErr_Fetch(&exc, &val, &tb); |
Victor Stinner | df22c03 | 2019-05-23 01:00:58 +0200 | [diff] [blame] | 246 | newtb = _PyTraceBack_FromFrame(tb, frame); |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 247 | if (newtb == NULL) { |
| 248 | _PyErr_ChainExceptions(exc, val, tb); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 249 | return -1; |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 250 | } |
| 251 | PyErr_Restore(exc, val, newtb); |
| 252 | Py_XDECREF(tb); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 253 | return 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 254 | } |
| 255 | |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 256 | /* Insert a frame into the traceback for (funcname, filename, lineno). */ |
Serhiy Storchaka | 73c95f1 | 2015-06-21 15:59:46 +0300 | [diff] [blame] | 257 | void _PyTraceback_Add(const char *funcname, const char *filename, int lineno) |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 258 | { |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 259 | PyObject *globals; |
| 260 | PyCodeObject *code; |
| 261 | PyFrameObject *frame; |
| 262 | PyObject *exc, *val, *tb; |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 263 | |
| 264 | /* Save and clear the current exception. Python functions must not be |
| 265 | called with an exception set. Calling Python functions happens when |
| 266 | the codec of the filesystem encoding is implemented in pure Python. */ |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 267 | PyErr_Fetch(&exc, &val, &tb); |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 268 | |
| 269 | globals = PyDict_New(); |
| 270 | if (!globals) |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 271 | goto error; |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 272 | code = PyCode_NewEmpty(filename, funcname, lineno); |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 273 | if (!code) { |
| 274 | Py_DECREF(globals); |
| 275 | goto error; |
| 276 | } |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 277 | frame = PyFrame_New(PyThreadState_Get(), code, globals, NULL); |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 278 | Py_DECREF(globals); |
| 279 | Py_DECREF(code); |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 280 | if (!frame) |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 281 | goto error; |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 282 | frame->f_lineno = lineno; |
| 283 | |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 284 | PyErr_Restore(exc, val, tb); |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 285 | PyTraceBack_Here(frame); |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 286 | Py_DECREF(frame); |
| 287 | return; |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 288 | |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 289 | error: |
| 290 | _PyErr_ChainExceptions(exc, val, tb); |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 291 | } |
| 292 | |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 293 | static PyObject * |
| 294 | _Py_FindSourceFile(PyObject *filename, char* namebuf, size_t namelen, PyObject *io) |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 295 | { |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 296 | Py_ssize_t i; |
| 297 | PyObject *binary; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 298 | PyObject *v; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 299 | Py_ssize_t npath; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 300 | size_t taillen; |
| 301 | PyObject *syspath; |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 302 | PyObject *path; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 303 | const char* tail; |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 304 | PyObject *filebytes; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 305 | const char* filepath; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 306 | Py_ssize_t len; |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 307 | PyObject* result; |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 308 | |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 309 | filebytes = PyUnicode_EncodeFSDefault(filename); |
| 310 | if (filebytes == NULL) { |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 311 | PyErr_Clear(); |
| 312 | return NULL; |
| 313 | } |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 314 | filepath = PyBytes_AS_STRING(filebytes); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 315 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 316 | /* Search tail of filename in sys.path before giving up */ |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 317 | tail = strrchr(filepath, SEP); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 318 | if (tail == NULL) |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 319 | tail = filepath; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 320 | else |
| 321 | tail++; |
| 322 | taillen = strlen(tail); |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 323 | |
Victor Stinner | bd303c1 | 2013-11-07 23:07:29 +0100 | [diff] [blame] | 324 | syspath = _PySys_GetObjectId(&PyId_path); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 325 | if (syspath == NULL || !PyList_Check(syspath)) |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 326 | goto error; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 327 | npath = PyList_Size(syspath); |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 328 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 329 | for (i = 0; i < npath; i++) { |
| 330 | v = PyList_GetItem(syspath, i); |
| 331 | if (v == NULL) { |
| 332 | PyErr_Clear(); |
| 333 | break; |
| 334 | } |
| 335 | if (!PyUnicode_Check(v)) |
| 336 | continue; |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 337 | path = PyUnicode_EncodeFSDefault(v); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 338 | if (path == NULL) { |
| 339 | PyErr_Clear(); |
| 340 | continue; |
| 341 | } |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 342 | len = PyBytes_GET_SIZE(path); |
| 343 | if (len + 1 + (Py_ssize_t)taillen >= (Py_ssize_t)namelen - 1) { |
| 344 | Py_DECREF(path); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 345 | continue; /* Too long */ |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 346 | } |
| 347 | strcpy(namebuf, PyBytes_AS_STRING(path)); |
| 348 | Py_DECREF(path); |
Victor Stinner | 98ea54c | 2014-08-15 23:30:40 +0200 | [diff] [blame] | 349 | if (strlen(namebuf) != (size_t)len) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 350 | continue; /* v contains '\0' */ |
| 351 | if (len > 0 && namebuf[len-1] != SEP) |
| 352 | namebuf[len++] = SEP; |
| 353 | strcpy(namebuf+len, tail); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 354 | |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 355 | binary = _PyObject_CallMethodId(io, &PyId_open, "ss", namebuf, "rb"); |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 356 | if (binary != NULL) { |
| 357 | result = binary; |
| 358 | goto finally; |
| 359 | } |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 360 | PyErr_Clear(); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 361 | } |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 362 | goto error; |
| 363 | |
| 364 | error: |
| 365 | result = NULL; |
| 366 | finally: |
| 367 | Py_DECREF(filebytes); |
| 368 | return result; |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 369 | } |
| 370 | |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 371 | int |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 372 | _Py_DisplaySourceLine(PyObject *f, PyObject *filename, int lineno, int indent) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 373 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 374 | int err = 0; |
| 375 | int fd; |
| 376 | int i; |
| 377 | char *found_encoding; |
Serhiy Storchaka | cd8295f | 2020-04-11 10:48:40 +0300 | [diff] [blame] | 378 | const char *encoding; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 379 | PyObject *io; |
| 380 | PyObject *binary; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 381 | PyObject *fob = NULL; |
| 382 | PyObject *lineobj = NULL; |
Antoine Pitrou | b86680e | 2010-10-14 21:15:17 +0000 | [diff] [blame] | 383 | PyObject *res; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 384 | char buf[MAXPATHLEN+1]; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 385 | int kind; |
Serhiy Storchaka | cd8295f | 2020-04-11 10:48:40 +0300 | [diff] [blame] | 386 | const void *data; |
Christian Heimes | 679db4a | 2008-01-18 09:56:22 +0000 | [diff] [blame] | 387 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 388 | /* open the file */ |
| 389 | if (filename == NULL) |
| 390 | return 0; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 391 | |
| 392 | io = PyImport_ImportModuleNoBlock("io"); |
| 393 | if (io == NULL) |
| 394 | return -1; |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 395 | binary = _PyObject_CallMethodId(io, &PyId_open, "Os", filename, "rb"); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 396 | |
| 397 | if (binary == NULL) { |
Victor Stinner | ceceaa0 | 2013-07-16 00:32:14 +0200 | [diff] [blame] | 398 | PyErr_Clear(); |
| 399 | |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 400 | binary = _Py_FindSourceFile(filename, buf, sizeof(buf), io); |
| 401 | if (binary == NULL) { |
| 402 | Py_DECREF(io); |
Victor Stinner | ceceaa0 | 2013-07-16 00:32:14 +0200 | [diff] [blame] | 403 | return -1; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 404 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 405 | } |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 406 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 407 | /* use the right encoding to decode the file as unicode */ |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 408 | fd = PyObject_AsFileDescriptor(binary); |
Christian Heimes | 8c077bc | 2013-07-21 01:53:10 +0200 | [diff] [blame] | 409 | if (fd < 0) { |
| 410 | Py_DECREF(io); |
| 411 | Py_DECREF(binary); |
Benjamin Peterson | 04b01dc | 2013-07-21 13:26:13 -0700 | [diff] [blame] | 412 | return 0; |
Christian Heimes | 8c077bc | 2013-07-21 01:53:10 +0200 | [diff] [blame] | 413 | } |
Victor Stinner | fe7c5b5 | 2011-04-05 01:48:03 +0200 | [diff] [blame] | 414 | found_encoding = PyTokenizer_FindEncodingFilename(fd, filename); |
Victor Stinner | 5272fa9 | 2013-12-19 13:39:32 +0100 | [diff] [blame] | 415 | if (found_encoding == NULL) |
| 416 | PyErr_Clear(); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 417 | encoding = (found_encoding != NULL) ? found_encoding : "utf-8"; |
Christian Heimes | 1f34729 | 2013-07-21 02:12:35 +0200 | [diff] [blame] | 418 | /* Reset position */ |
| 419 | if (lseek(fd, 0, SEEK_SET) == (off_t)-1) { |
| 420 | Py_DECREF(io); |
| 421 | Py_DECREF(binary); |
| 422 | PyMem_FREE(found_encoding); |
Benjamin Peterson | 04b01dc | 2013-07-21 13:26:13 -0700 | [diff] [blame] | 423 | return 0; |
Christian Heimes | 1f34729 | 2013-07-21 02:12:35 +0200 | [diff] [blame] | 424 | } |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 425 | fob = _PyObject_CallMethodId(io, &PyId_TextIOWrapper, "Os", binary, encoding); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 426 | Py_DECREF(io); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 427 | PyMem_FREE(found_encoding); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 428 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 429 | if (fob == NULL) { |
| 430 | PyErr_Clear(); |
Victor Stinner | 81f241a | 2015-03-25 02:25:25 +0100 | [diff] [blame] | 431 | |
Jeroen Demeyer | 762f93f | 2019-07-08 10:19:25 +0200 | [diff] [blame] | 432 | res = _PyObject_CallMethodIdNoArgs(binary, &PyId_close); |
Victor Stinner | 81f241a | 2015-03-25 02:25:25 +0100 | [diff] [blame] | 433 | Py_DECREF(binary); |
| 434 | if (res) |
| 435 | Py_DECREF(res); |
| 436 | else |
| 437 | PyErr_Clear(); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 438 | return 0; |
| 439 | } |
Victor Stinner | 81f241a | 2015-03-25 02:25:25 +0100 | [diff] [blame] | 440 | Py_DECREF(binary); |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 441 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 442 | /* get the line number lineno */ |
| 443 | for (i = 0; i < lineno; i++) { |
| 444 | Py_XDECREF(lineobj); |
| 445 | lineobj = PyFile_GetLine(fob, -1); |
| 446 | if (!lineobj) { |
Victor Stinner | 5e78f4d | 2014-10-30 10:17:27 +0100 | [diff] [blame] | 447 | PyErr_Clear(); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 448 | err = -1; |
| 449 | break; |
| 450 | } |
| 451 | } |
Jeroen Demeyer | 762f93f | 2019-07-08 10:19:25 +0200 | [diff] [blame] | 452 | res = _PyObject_CallMethodIdNoArgs(fob, &PyId_close); |
Antoine Pitrou | b86680e | 2010-10-14 21:15:17 +0000 | [diff] [blame] | 453 | if (res) |
| 454 | Py_DECREF(res); |
| 455 | else |
| 456 | PyErr_Clear(); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 457 | Py_DECREF(fob); |
| 458 | if (!lineobj || !PyUnicode_Check(lineobj)) { |
| 459 | Py_XDECREF(lineobj); |
| 460 | return err; |
| 461 | } |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 462 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 463 | /* remove the indentation of the line */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 464 | kind = PyUnicode_KIND(lineobj); |
| 465 | data = PyUnicode_DATA(lineobj); |
| 466 | for (i=0; i < PyUnicode_GET_LENGTH(lineobj); i++) { |
| 467 | Py_UCS4 ch = PyUnicode_READ(kind, data, i); |
| 468 | if (ch != ' ' && ch != '\t' && ch != '\014') |
| 469 | break; |
| 470 | } |
| 471 | if (i) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 472 | PyObject *truncated; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 473 | truncated = PyUnicode_Substring(lineobj, i, PyUnicode_GET_LENGTH(lineobj)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 474 | if (truncated) { |
| 475 | Py_DECREF(lineobj); |
| 476 | lineobj = truncated; |
| 477 | } else { |
| 478 | PyErr_Clear(); |
| 479 | } |
| 480 | } |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 481 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 482 | /* Write some spaces before the line */ |
| 483 | strcpy(buf, " "); |
| 484 | assert (strlen(buf) == 10); |
| 485 | while (indent > 0) { |
Benjamin Peterson | 0f9b7d3 | 2013-07-21 13:29:37 -0700 | [diff] [blame] | 486 | if (indent < 10) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 487 | buf[indent] = '\0'; |
| 488 | err = PyFile_WriteString(buf, f); |
| 489 | if (err != 0) |
| 490 | break; |
| 491 | indent -= 10; |
| 492 | } |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 493 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 494 | /* finally display the line */ |
| 495 | if (err == 0) |
| 496 | err = PyFile_WriteObject(lineobj, f, Py_PRINT_RAW); |
| 497 | Py_DECREF(lineobj); |
| 498 | if (err == 0) |
| 499 | err = PyFile_WriteString("\n", f); |
| 500 | return err; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 501 | } |
| 502 | |
Guido van Rossum | 7e8d26d | 1997-05-22 22:35:47 +0000 | [diff] [blame] | 503 | static int |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 504 | tb_displayline(PyObject *f, PyObject *filename, int lineno, PyObject *name) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 505 | { |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 506 | int err; |
| 507 | PyObject *line; |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 508 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 509 | if (filename == NULL || name == NULL) |
| 510 | return -1; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 511 | line = PyUnicode_FromFormat(" File \"%U\", line %d, in %U\n", |
| 512 | filename, lineno, name); |
| 513 | if (line == NULL) |
| 514 | return -1; |
| 515 | err = PyFile_WriteObject(line, f, Py_PRINT_RAW); |
| 516 | Py_DECREF(line); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 517 | if (err != 0) |
| 518 | return err; |
Kristján Valur Jónsson | c5963d3 | 2012-07-19 21:02:03 +0000 | [diff] [blame] | 519 | /* ignore errors since we can't report them, can we? */ |
| 520 | if (_Py_DisplaySourceLine(f, filename, lineno, 4)) |
| 521 | PyErr_Clear(); |
| 522 | return err; |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 523 | } |
| 524 | |
Benjamin Peterson | d545869 | 2018-09-10 08:43:10 -0700 | [diff] [blame] | 525 | static const int TB_RECURSIVE_CUTOFF = 3; // Also hardcoded in traceback.py. |
| 526 | |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 527 | static int |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 528 | tb_print_line_repeated(PyObject *f, long cnt) |
| 529 | { |
Benjamin Peterson | d545869 | 2018-09-10 08:43:10 -0700 | [diff] [blame] | 530 | cnt -= TB_RECURSIVE_CUTOFF; |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 531 | PyObject *line = PyUnicode_FromFormat( |
Benjamin Peterson | d545869 | 2018-09-10 08:43:10 -0700 | [diff] [blame] | 532 | (cnt > 1) |
| 533 | ? " [Previous line repeated %ld more times]\n" |
| 534 | : " [Previous line repeated %ld more time]\n", |
| 535 | cnt); |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 536 | if (line == NULL) { |
| 537 | return -1; |
| 538 | } |
Benjamin Peterson | d545869 | 2018-09-10 08:43:10 -0700 | [diff] [blame] | 539 | int err = PyFile_WriteObject(line, f, Py_PRINT_RAW); |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 540 | Py_DECREF(line); |
| 541 | return err; |
| 542 | } |
| 543 | |
| 544 | static int |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 545 | tb_printinternal(PyTracebackObject *tb, PyObject *f, long limit) |
| 546 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 547 | int err = 0; |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 548 | Py_ssize_t depth = 0; |
Nick Coghlan | d003423 | 2016-08-15 13:11:34 +1000 | [diff] [blame] | 549 | PyObject *last_file = NULL; |
| 550 | int last_line = -1; |
| 551 | PyObject *last_name = NULL; |
| 552 | long cnt = 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 553 | PyTracebackObject *tb1 = tb; |
| 554 | while (tb1 != NULL) { |
| 555 | depth++; |
| 556 | tb1 = tb1->tb_next; |
| 557 | } |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 558 | while (tb != NULL && depth > limit) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 559 | depth--; |
| 560 | tb = tb->tb_next; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 561 | } |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 562 | while (tb != NULL && err == 0) { |
Victor Stinner | a42ca74 | 2020-04-28 19:01:31 +0200 | [diff] [blame] | 563 | PyCodeObject *code = PyFrame_GetCode(tb->tb_frame); |
Benjamin Peterson | d545869 | 2018-09-10 08:43:10 -0700 | [diff] [blame] | 564 | if (last_file == NULL || |
Victor Stinner | a42ca74 | 2020-04-28 19:01:31 +0200 | [diff] [blame] | 565 | code->co_filename != last_file || |
Benjamin Peterson | d545869 | 2018-09-10 08:43:10 -0700 | [diff] [blame] | 566 | last_line == -1 || tb->tb_lineno != last_line || |
Victor Stinner | a42ca74 | 2020-04-28 19:01:31 +0200 | [diff] [blame] | 567 | last_name == NULL || code->co_name != last_name) { |
Benjamin Peterson | d545869 | 2018-09-10 08:43:10 -0700 | [diff] [blame] | 568 | if (cnt > TB_RECURSIVE_CUTOFF) { |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 569 | err = tb_print_line_repeated(f, cnt); |
| 570 | } |
Victor Stinner | a42ca74 | 2020-04-28 19:01:31 +0200 | [diff] [blame] | 571 | last_file = code->co_filename; |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 572 | last_line = tb->tb_lineno; |
Victor Stinner | a42ca74 | 2020-04-28 19:01:31 +0200 | [diff] [blame] | 573 | last_name = code->co_name; |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 574 | cnt = 0; |
| 575 | } |
Benjamin Peterson | d545869 | 2018-09-10 08:43:10 -0700 | [diff] [blame] | 576 | cnt++; |
| 577 | if (err == 0 && cnt <= TB_RECURSIVE_CUTOFF) { |
Victor Stinner | a42ca74 | 2020-04-28 19:01:31 +0200 | [diff] [blame] | 578 | err = tb_displayline(f, code->co_filename, tb->tb_lineno, |
| 579 | code->co_name); |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 580 | if (err == 0) { |
| 581 | err = PyErr_CheckSignals(); |
| 582 | } |
| 583 | } |
Victor Stinner | 8852ad4 | 2020-04-29 01:28:13 +0200 | [diff] [blame] | 584 | Py_DECREF(code); |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 585 | tb = tb->tb_next; |
| 586 | } |
Benjamin Peterson | d545869 | 2018-09-10 08:43:10 -0700 | [diff] [blame] | 587 | if (err == 0 && cnt > TB_RECURSIVE_CUTOFF) { |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 588 | err = tb_print_line_repeated(f, cnt); |
Nick Coghlan | d003423 | 2016-08-15 13:11:34 +1000 | [diff] [blame] | 589 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 590 | return err; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 591 | } |
| 592 | |
Christian Heimes | 0fbab7f | 2007-12-04 21:55:18 +0000 | [diff] [blame] | 593 | #define PyTraceBack_LIMIT 1000 |
| 594 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 595 | int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 596 | PyTraceBack_Print(PyObject *v, PyObject *f) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 597 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 598 | int err; |
| 599 | PyObject *limitv; |
| 600 | long limit = PyTraceBack_LIMIT; |
Christian Heimes | 0fbab7f | 2007-12-04 21:55:18 +0000 | [diff] [blame] | 601 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 602 | if (v == NULL) |
| 603 | return 0; |
| 604 | if (!PyTraceBack_Check(v)) { |
| 605 | PyErr_BadInternalCall(); |
| 606 | return -1; |
| 607 | } |
| 608 | limitv = PySys_GetObject("tracebacklimit"); |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 609 | if (limitv && PyLong_Check(limitv)) { |
| 610 | int overflow; |
| 611 | limit = PyLong_AsLongAndOverflow(limitv, &overflow); |
| 612 | if (overflow > 0) { |
| 613 | limit = LONG_MAX; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 614 | } |
| 615 | else if (limit <= 0) { |
Serhiy Storchaka | edad8ee | 2017-11-15 17:38:52 +0200 | [diff] [blame] | 616 | return 0; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 617 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 618 | } |
| 619 | err = PyFile_WriteString("Traceback (most recent call last):\n", f); |
| 620 | if (!err) |
| 621 | err = tb_printinternal((PyTracebackObject *)v, f, limit); |
| 622 | return err; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 623 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 624 | |
| 625 | /* Reverse a string. For example, "abcd" becomes "dcba". |
| 626 | |
| 627 | This function is signal safe. */ |
| 628 | |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 629 | void |
| 630 | _Py_DumpDecimal(int fd, unsigned long value) |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 631 | { |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 632 | /* maximum number of characters required for output of %lld or %p. |
| 633 | We need at most ceil(log10(256)*SIZEOF_LONG_LONG) digits, |
| 634 | plus 1 for the null byte. 53/22 is an upper bound for log10(256). */ |
| 635 | char buffer[1 + (sizeof(unsigned long)*53-1) / 22 + 1]; |
| 636 | char *ptr, *end; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 637 | |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 638 | end = &buffer[Py_ARRAY_LENGTH(buffer) - 1]; |
| 639 | ptr = end; |
| 640 | *ptr = '\0'; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 641 | do { |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 642 | --ptr; |
| 643 | assert(ptr >= buffer); |
| 644 | *ptr = '0' + (value % 10); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 645 | value /= 10; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 646 | } while (value); |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 647 | |
| 648 | _Py_write_noraise(fd, ptr, end - ptr); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 649 | } |
| 650 | |
Guido van Rossum | 7be5d7d | 2013-10-20 18:21:02 -0700 | [diff] [blame] | 651 | /* Format an integer in range [0; 0xffffffff] to hexadecimal of 'width' digits, |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 652 | and write it into the file fd. |
| 653 | |
| 654 | This function is signal safe. */ |
| 655 | |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 656 | void |
| 657 | _Py_DumpHexadecimal(int fd, unsigned long value, Py_ssize_t width) |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 658 | { |
Victor Stinner | 013024e | 2016-03-16 09:43:14 +0100 | [diff] [blame] | 659 | char buffer[sizeof(unsigned long) * 2 + 1], *ptr, *end; |
| 660 | const Py_ssize_t size = Py_ARRAY_LENGTH(buffer) - 1; |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 661 | |
| 662 | if (width > size) |
| 663 | width = size; |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 664 | /* it's ok if width is negative */ |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 665 | |
Victor Stinner | 013024e | 2016-03-16 09:43:14 +0100 | [diff] [blame] | 666 | end = &buffer[size]; |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 667 | ptr = end; |
| 668 | *ptr = '\0'; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 669 | do { |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 670 | --ptr; |
| 671 | assert(ptr >= buffer); |
| 672 | *ptr = Py_hexdigits[value & 15]; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 673 | value >>= 4; |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 674 | } while ((end - ptr) < width || value); |
| 675 | |
| 676 | _Py_write_noraise(fd, ptr, end - ptr); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 677 | } |
| 678 | |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 679 | void |
| 680 | _Py_DumpASCII(int fd, PyObject *text) |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 681 | { |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 682 | PyASCIIObject *ascii = (PyASCIIObject *)text; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 683 | Py_ssize_t i, size; |
| 684 | int truncated; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 685 | int kind; |
Victor Stinner | a336de7 | 2011-10-05 22:44:12 +0200 | [diff] [blame] | 686 | void *data = NULL; |
| 687 | wchar_t *wstr = NULL; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 688 | Py_UCS4 ch; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 689 | |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 690 | if (!PyUnicode_Check(text)) |
| 691 | return; |
| 692 | |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 693 | size = ascii->length; |
| 694 | kind = ascii->state.kind; |
Victor Stinner | 1c3069a | 2016-03-23 16:10:07 +0100 | [diff] [blame] | 695 | if (kind == PyUnicode_WCHAR_KIND) { |
| 696 | wstr = ((PyASCIIObject *)text)->wstr; |
| 697 | if (wstr == NULL) |
| 698 | return; |
| 699 | size = ((PyCompactUnicodeObject *)text)->wstr_length; |
| 700 | } |
| 701 | else if (ascii->state.compact) { |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 702 | if (ascii->state.ascii) |
| 703 | data = ((PyASCIIObject*)text) + 1; |
| 704 | else |
| 705 | data = ((PyCompactUnicodeObject*)text) + 1; |
| 706 | } |
Victor Stinner | 1c3069a | 2016-03-23 16:10:07 +0100 | [diff] [blame] | 707 | else { |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 708 | data = ((PyUnicodeObject *)text)->data.any; |
| 709 | if (data == NULL) |
| 710 | return; |
| 711 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 712 | |
| 713 | if (MAX_STRING_LENGTH < size) { |
| 714 | size = MAX_STRING_LENGTH; |
| 715 | truncated = 1; |
| 716 | } |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 717 | else { |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 718 | truncated = 0; |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 719 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 720 | |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 721 | for (i=0; i < size; i++) { |
Victor Stinner | a336de7 | 2011-10-05 22:44:12 +0200 | [diff] [blame] | 722 | if (kind != PyUnicode_WCHAR_KIND) |
| 723 | ch = PyUnicode_READ(kind, data, i); |
| 724 | else |
| 725 | ch = wstr[i]; |
Victor Stinner | b86f08f | 2014-10-03 14:18:09 +0200 | [diff] [blame] | 726 | if (' ' <= ch && ch <= 126) { |
| 727 | /* printable ASCII character */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 728 | char c = (char)ch; |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 729 | _Py_write_noraise(fd, &c, 1); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 730 | } |
Victor Stinner | b86f08f | 2014-10-03 14:18:09 +0200 | [diff] [blame] | 731 | else if (ch <= 0xff) { |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 732 | PUTS(fd, "\\x"); |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 733 | _Py_DumpHexadecimal(fd, ch, 2); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 734 | } |
Victor Stinner | b86f08f | 2014-10-03 14:18:09 +0200 | [diff] [blame] | 735 | else if (ch <= 0xffff) { |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 736 | PUTS(fd, "\\u"); |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 737 | _Py_DumpHexadecimal(fd, ch, 4); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 738 | } |
| 739 | else { |
| 740 | PUTS(fd, "\\U"); |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 741 | _Py_DumpHexadecimal(fd, ch, 8); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 742 | } |
| 743 | } |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 744 | if (truncated) { |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 745 | PUTS(fd, "..."); |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 746 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 747 | } |
| 748 | |
| 749 | /* Write a frame into the file fd: "File "xxx", line xxx in xxx". |
| 750 | |
| 751 | This function is signal safe. */ |
| 752 | |
| 753 | static void |
| 754 | dump_frame(int fd, PyFrameObject *frame) |
| 755 | { |
Victor Stinner | 8852ad4 | 2020-04-29 01:28:13 +0200 | [diff] [blame] | 756 | PyCodeObject *code = PyFrame_GetCode(frame); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 757 | PUTS(fd, " File "); |
Victor Stinner | 8852ad4 | 2020-04-29 01:28:13 +0200 | [diff] [blame] | 758 | if (code->co_filename != NULL |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 759 | && PyUnicode_Check(code->co_filename)) |
| 760 | { |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 761 | PUTS(fd, "\""); |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 762 | _Py_DumpASCII(fd, code->co_filename); |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 763 | PUTS(fd, "\""); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 764 | } else { |
| 765 | PUTS(fd, "???"); |
| 766 | } |
| 767 | |
| 768 | /* PyFrame_GetLineNumber() was introduced in Python 2.7.0 and 3.2.0 */ |
Victor Stinner | 8852ad4 | 2020-04-29 01:28:13 +0200 | [diff] [blame] | 769 | int lineno = PyCode_Addr2Line(code, frame->f_lasti); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 770 | PUTS(fd, ", line "); |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 771 | if (lineno >= 0) { |
| 772 | _Py_DumpDecimal(fd, (unsigned long)lineno); |
| 773 | } |
| 774 | else { |
| 775 | PUTS(fd, "???"); |
| 776 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 777 | PUTS(fd, " in "); |
| 778 | |
Victor Stinner | 8852ad4 | 2020-04-29 01:28:13 +0200 | [diff] [blame] | 779 | if (code->co_name != NULL |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 780 | && PyUnicode_Check(code->co_name)) { |
| 781 | _Py_DumpASCII(fd, code->co_name); |
| 782 | } |
| 783 | else { |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 784 | PUTS(fd, "???"); |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 785 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 786 | |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 787 | PUTS(fd, "\n"); |
Victor Stinner | 8852ad4 | 2020-04-29 01:28:13 +0200 | [diff] [blame] | 788 | Py_DECREF(code); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 789 | } |
| 790 | |
Victor Stinner | fcb88c4 | 2011-04-01 15:34:01 +0200 | [diff] [blame] | 791 | static void |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 792 | dump_traceback(int fd, PyThreadState *tstate, int write_header) |
| 793 | { |
| 794 | PyFrameObject *frame; |
| 795 | unsigned int depth; |
| 796 | |
Victor Stinner | 8fa3e17 | 2019-09-17 23:36:16 +0200 | [diff] [blame] | 797 | if (write_header) { |
Guido van Rossum | 7be5d7d | 2013-10-20 18:21:02 -0700 | [diff] [blame] | 798 | PUTS(fd, "Stack (most recent call first):\n"); |
Victor Stinner | 8fa3e17 | 2019-09-17 23:36:16 +0200 | [diff] [blame] | 799 | } |
Victor Stinner | fcb88c4 | 2011-04-01 15:34:01 +0200 | [diff] [blame] | 800 | |
Victor Stinner | 7036477 | 2020-04-29 03:28:46 +0200 | [diff] [blame] | 801 | frame = PyThreadState_GetFrame(tstate); |
Victor Stinner | 8fa3e17 | 2019-09-17 23:36:16 +0200 | [diff] [blame] | 802 | if (frame == NULL) { |
| 803 | PUTS(fd, "<no Python frame>\n"); |
Victor Stinner | fcb88c4 | 2011-04-01 15:34:01 +0200 | [diff] [blame] | 804 | return; |
Victor Stinner | 8fa3e17 | 2019-09-17 23:36:16 +0200 | [diff] [blame] | 805 | } |
Victor Stinner | fcb88c4 | 2011-04-01 15:34:01 +0200 | [diff] [blame] | 806 | |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 807 | depth = 0; |
Victor Stinner | 7036477 | 2020-04-29 03:28:46 +0200 | [diff] [blame] | 808 | while (1) { |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 809 | if (MAX_FRAME_DEPTH <= depth) { |
Victor Stinner | 7036477 | 2020-04-29 03:28:46 +0200 | [diff] [blame] | 810 | Py_DECREF(frame); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 811 | PUTS(fd, " ...\n"); |
| 812 | break; |
| 813 | } |
Victor Stinner | 7036477 | 2020-04-29 03:28:46 +0200 | [diff] [blame] | 814 | if (!PyFrame_Check(frame)) { |
| 815 | Py_DECREF(frame); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 816 | break; |
Victor Stinner | 7036477 | 2020-04-29 03:28:46 +0200 | [diff] [blame] | 817 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 818 | dump_frame(fd, frame); |
Victor Stinner | 7036477 | 2020-04-29 03:28:46 +0200 | [diff] [blame] | 819 | PyFrameObject *back = PyFrame_GetBack(frame); |
| 820 | Py_DECREF(frame); |
| 821 | |
| 822 | if (back == NULL) { |
| 823 | break; |
| 824 | } |
| 825 | frame = back; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 826 | depth++; |
| 827 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 828 | } |
| 829 | |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 830 | /* Dump the traceback of a Python thread into fd. Use write() to write the |
| 831 | traceback and retry if write() is interrupted by a signal (failed with |
| 832 | EINTR), but don't call the Python signal handler. |
| 833 | |
| 834 | The caller is responsible to call PyErr_CheckSignals() to call Python signal |
| 835 | handlers if signals were received. */ |
Victor Stinner | fcb88c4 | 2011-04-01 15:34:01 +0200 | [diff] [blame] | 836 | void |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 837 | _Py_DumpTraceback(int fd, PyThreadState *tstate) |
| 838 | { |
Victor Stinner | fcb88c4 | 2011-04-01 15:34:01 +0200 | [diff] [blame] | 839 | dump_traceback(fd, tstate, 1); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 840 | } |
| 841 | |
| 842 | /* Write the thread identifier into the file 'fd': "Current thread 0xHHHH:\" if |
| 843 | is_current is true, "Thread 0xHHHH:\n" otherwise. |
| 844 | |
| 845 | This function is signal safe. */ |
| 846 | |
| 847 | static void |
| 848 | write_thread_id(int fd, PyThreadState *tstate, int is_current) |
| 849 | { |
| 850 | if (is_current) |
| 851 | PUTS(fd, "Current thread 0x"); |
| 852 | else |
| 853 | PUTS(fd, "Thread 0x"); |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 854 | _Py_DumpHexadecimal(fd, |
Serhiy Storchaka | aefa7eb | 2017-03-23 15:48:39 +0200 | [diff] [blame] | 855 | tstate->thread_id, |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 856 | sizeof(unsigned long) * 2); |
Guido van Rossum | 7be5d7d | 2013-10-20 18:21:02 -0700 | [diff] [blame] | 857 | PUTS(fd, " (most recent call first):\n"); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 858 | } |
| 859 | |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 860 | /* Dump the traceback of all Python threads into fd. Use write() to write the |
| 861 | traceback and retry if write() is interrupted by a signal (failed with |
| 862 | EINTR), but don't call the Python signal handler. |
| 863 | |
| 864 | The caller is responsible to call PyErr_CheckSignals() to call Python signal |
| 865 | handlers if signals were received. */ |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 866 | const char* |
| 867 | _Py_DumpTracebackThreads(int fd, PyInterpreterState *interp, |
Victor Stinner | 861d9ab | 2016-03-16 22:45:24 +0100 | [diff] [blame] | 868 | PyThreadState *current_tstate) |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 869 | { |
| 870 | PyThreadState *tstate; |
| 871 | unsigned int nthreads; |
| 872 | |
Victor Stinner | 861d9ab | 2016-03-16 22:45:24 +0100 | [diff] [blame] | 873 | if (current_tstate == NULL) { |
| 874 | /* _Py_DumpTracebackThreads() is called from signal handlers by |
| 875 | faulthandler. |
| 876 | |
| 877 | SIGSEGV, SIGFPE, SIGABRT, SIGBUS and SIGILL are synchronous signals |
| 878 | and are thus delivered to the thread that caused the fault. Get the |
| 879 | Python thread state of the current thread. |
| 880 | |
| 881 | PyThreadState_Get() doesn't give the state of the thread that caused |
Victor Stinner | 8fa3e17 | 2019-09-17 23:36:16 +0200 | [diff] [blame] | 882 | the fault if the thread released the GIL, and so |
| 883 | _PyThreadState_GET() cannot be used. Read the thread specific |
| 884 | storage (TSS) instead: call PyGILState_GetThisThreadState(). */ |
Victor Stinner | 861d9ab | 2016-03-16 22:45:24 +0100 | [diff] [blame] | 885 | current_tstate = PyGILState_GetThisThreadState(); |
| 886 | } |
| 887 | |
| 888 | if (interp == NULL) { |
| 889 | if (current_tstate == NULL) { |
| 890 | interp = _PyGILState_GetInterpreterStateUnsafe(); |
| 891 | if (interp == NULL) { |
| 892 | /* We need the interpreter state to get Python threads */ |
| 893 | return "unable to get the interpreter state"; |
| 894 | } |
| 895 | } |
| 896 | else { |
| 897 | interp = current_tstate->interp; |
| 898 | } |
| 899 | } |
Victor Stinner | 861d9ab | 2016-03-16 22:45:24 +0100 | [diff] [blame] | 900 | assert(interp != NULL); |
| 901 | |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 902 | /* Get the current interpreter from the current thread */ |
| 903 | tstate = PyInterpreterState_ThreadHead(interp); |
| 904 | if (tstate == NULL) |
| 905 | return "unable to get the thread head state"; |
| 906 | |
| 907 | /* Dump the traceback of each thread */ |
| 908 | tstate = PyInterpreterState_ThreadHead(interp); |
| 909 | nthreads = 0; |
Steve Dower | 8fc8980 | 2015-04-12 00:26:27 -0400 | [diff] [blame] | 910 | _Py_BEGIN_SUPPRESS_IPH |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 911 | do |
| 912 | { |
| 913 | if (nthreads != 0) |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 914 | PUTS(fd, "\n"); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 915 | if (nthreads >= MAX_NTHREADS) { |
| 916 | PUTS(fd, "...\n"); |
| 917 | break; |
| 918 | } |
Victor Stinner | 861d9ab | 2016-03-16 22:45:24 +0100 | [diff] [blame] | 919 | write_thread_id(fd, tstate, tstate == current_tstate); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 920 | dump_traceback(fd, tstate, 0); |
| 921 | tstate = PyThreadState_Next(tstate); |
| 922 | nthreads++; |
| 923 | } while (tstate != NULL); |
Steve Dower | 8fc8980 | 2015-04-12 00:26:27 -0400 | [diff] [blame] | 924 | _Py_END_SUPPRESS_IPH |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 925 | |
| 926 | return NULL; |
| 927 | } |
| 928 | |