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" |
Eric Snow | 2ebc5ce | 2017-09-07 23:51:28 -0600 | [diff] [blame] | 5 | #include "internal/pystate.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 6 | |
Jeremy Hylton | 3e0055f | 2005-10-20 19:59:25 +0000 | [diff] [blame] | 7 | #include "code.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 8 | #include "frameobject.h" |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 9 | #include "structmember.h" |
Guido van Rossum | 7169dbb | 1992-02-26 15:17:59 +0000 | [diff] [blame] | 10 | #include "osdefs.h" |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 11 | #ifdef HAVE_FCNTL_H |
| 12 | #include <fcntl.h> |
| 13 | #endif |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 14 | |
Nicholas Bastin | a7604bf | 2004-03-21 18:37:23 +0000 | [diff] [blame] | 15 | #define OFF(x) offsetof(PyTracebackObject, x) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 16 | |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 17 | #define PUTS(fd, str) _Py_write_noraise(fd, str, (int)strlen(str)) |
Victor Stinner | 54f939b | 2012-07-30 13:08:58 +0200 | [diff] [blame] | 18 | #define MAX_STRING_LENGTH 500 |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 19 | #define MAX_FRAME_DEPTH 100 |
| 20 | #define MAX_NTHREADS 100 |
| 21 | |
Victor Stinner | fe7c5b5 | 2011-04-05 01:48:03 +0200 | [diff] [blame] | 22 | /* Function from Parser/tokenizer.c */ |
| 23 | extern char * PyTokenizer_FindEncodingFilename(int, PyObject *); |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 24 | |
Victor Stinner | bd303c1 | 2013-11-07 23:07:29 +0100 | [diff] [blame] | 25 | _Py_IDENTIFIER(TextIOWrapper); |
| 26 | _Py_IDENTIFIER(close); |
| 27 | _Py_IDENTIFIER(open); |
| 28 | _Py_IDENTIFIER(path); |
| 29 | |
Collin Winter | 3eed765 | 2007-08-14 17:53:54 +0000 | [diff] [blame] | 30 | static PyObject * |
| 31 | tb_dir(PyTracebackObject *self) |
| 32 | { |
| 33 | return Py_BuildValue("[ssss]", "tb_frame", "tb_next", |
| 34 | "tb_lasti", "tb_lineno"); |
| 35 | } |
| 36 | |
| 37 | static PyMethodDef tb_methods[] = { |
| 38 | {"__dir__", (PyCFunction)tb_dir, METH_NOARGS}, |
| 39 | {NULL, NULL, 0, NULL}, |
| 40 | }; |
| 41 | |
Neal Norwitz | 8dfc4a9 | 2007-08-11 06:39:53 +0000 | [diff] [blame] | 42 | static PyMemberDef tb_memberlist[] = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 43 | {"tb_next", T_OBJECT, OFF(tb_next), READONLY}, |
| 44 | {"tb_frame", T_OBJECT, OFF(tb_frame), READONLY}, |
| 45 | {"tb_lasti", T_INT, OFF(tb_lasti), READONLY}, |
| 46 | {"tb_lineno", T_INT, OFF(tb_lineno), READONLY}, |
| 47 | {NULL} /* Sentinel */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 48 | }; |
| 49 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 50 | static void |
Nicholas Bastin | a7604bf | 2004-03-21 18:37:23 +0000 | [diff] [blame] | 51 | tb_dealloc(PyTracebackObject *tb) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 52 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 53 | PyObject_GC_UnTrack(tb); |
| 54 | Py_TRASHCAN_SAFE_BEGIN(tb) |
| 55 | Py_XDECREF(tb->tb_next); |
| 56 | Py_XDECREF(tb->tb_frame); |
| 57 | PyObject_GC_Del(tb); |
| 58 | Py_TRASHCAN_SAFE_END(tb) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 59 | } |
| 60 | |
Jeremy Hylton | fd14d8e | 2001-10-22 22:17:41 +0000 | [diff] [blame] | 61 | static int |
Nicholas Bastin | a7604bf | 2004-03-21 18:37:23 +0000 | [diff] [blame] | 62 | tb_traverse(PyTracebackObject *tb, visitproc visit, void *arg) |
Jeremy Hylton | fd14d8e | 2001-10-22 22:17:41 +0000 | [diff] [blame] | 63 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 64 | Py_VISIT(tb->tb_next); |
| 65 | Py_VISIT(tb->tb_frame); |
| 66 | return 0; |
Jeremy Hylton | fd14d8e | 2001-10-22 22:17:41 +0000 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | static void |
Nicholas Bastin | a7604bf | 2004-03-21 18:37:23 +0000 | [diff] [blame] | 70 | tb_clear(PyTracebackObject *tb) |
Jeremy Hylton | fd14d8e | 2001-10-22 22:17:41 +0000 | [diff] [blame] | 71 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 72 | Py_CLEAR(tb->tb_next); |
| 73 | Py_CLEAR(tb->tb_frame); |
Jeremy Hylton | fd14d8e | 2001-10-22 22:17:41 +0000 | [diff] [blame] | 74 | } |
| 75 | |
Tim Peters | d7c3652 | 2001-10-22 19:34:09 +0000 | [diff] [blame] | 76 | PyTypeObject PyTraceBack_Type = { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 77 | PyVarObject_HEAD_INIT(&PyType_Type, 0) |
| 78 | "traceback", |
| 79 | sizeof(PyTracebackObject), |
| 80 | 0, |
| 81 | (destructor)tb_dealloc, /*tp_dealloc*/ |
| 82 | 0, /*tp_print*/ |
| 83 | 0, /*tp_getattr*/ |
| 84 | 0, /*tp_setattr*/ |
| 85 | 0, /*tp_reserved*/ |
| 86 | 0, /*tp_repr*/ |
| 87 | 0, /*tp_as_number*/ |
| 88 | 0, /*tp_as_sequence*/ |
| 89 | 0, /*tp_as_mapping*/ |
| 90 | 0, /* tp_hash */ |
| 91 | 0, /* tp_call */ |
| 92 | 0, /* tp_str */ |
| 93 | PyObject_GenericGetAttr, /* tp_getattro */ |
| 94 | 0, /* tp_setattro */ |
| 95 | 0, /* tp_as_buffer */ |
| 96 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC,/* tp_flags */ |
| 97 | 0, /* tp_doc */ |
| 98 | (traverseproc)tb_traverse, /* tp_traverse */ |
| 99 | (inquiry)tb_clear, /* tp_clear */ |
| 100 | 0, /* tp_richcompare */ |
| 101 | 0, /* tp_weaklistoffset */ |
| 102 | 0, /* tp_iter */ |
| 103 | 0, /* tp_iternext */ |
| 104 | tb_methods, /* tp_methods */ |
| 105 | tb_memberlist, /* tp_members */ |
| 106 | 0, /* tp_getset */ |
| 107 | 0, /* tp_base */ |
| 108 | 0, /* tp_dict */ |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 109 | }; |
| 110 | |
Nicholas Bastin | a7604bf | 2004-03-21 18:37:23 +0000 | [diff] [blame] | 111 | static PyTracebackObject * |
| 112 | newtracebackobject(PyTracebackObject *next, PyFrameObject *frame) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 113 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 114 | PyTracebackObject *tb; |
| 115 | if ((next != NULL && !PyTraceBack_Check(next)) || |
| 116 | frame == NULL || !PyFrame_Check(frame)) { |
| 117 | PyErr_BadInternalCall(); |
| 118 | return NULL; |
| 119 | } |
| 120 | tb = PyObject_GC_New(PyTracebackObject, &PyTraceBack_Type); |
| 121 | if (tb != NULL) { |
| 122 | Py_XINCREF(next); |
| 123 | tb->tb_next = next; |
| 124 | Py_XINCREF(frame); |
| 125 | tb->tb_frame = frame; |
| 126 | tb->tb_lasti = frame->f_lasti; |
| 127 | tb->tb_lineno = PyFrame_GetLineNumber(frame); |
| 128 | PyObject_GC_Track(tb); |
| 129 | } |
| 130 | return tb; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 131 | } |
| 132 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 133 | int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 134 | PyTraceBack_Here(PyFrameObject *frame) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 135 | { |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 136 | PyObject *exc, *val, *tb, *newtb; |
| 137 | PyErr_Fetch(&exc, &val, &tb); |
| 138 | newtb = (PyObject *)newtracebackobject((PyTracebackObject *)tb, frame); |
| 139 | if (newtb == NULL) { |
| 140 | _PyErr_ChainExceptions(exc, val, tb); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 141 | return -1; |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 142 | } |
| 143 | PyErr_Restore(exc, val, newtb); |
| 144 | Py_XDECREF(tb); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 145 | return 0; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 146 | } |
| 147 | |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 148 | /* Insert a frame into the traceback for (funcname, filename, lineno). */ |
Serhiy Storchaka | 73c95f1 | 2015-06-21 15:59:46 +0300 | [diff] [blame] | 149 | void _PyTraceback_Add(const char *funcname, const char *filename, int lineno) |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 150 | { |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 151 | PyObject *globals; |
| 152 | PyCodeObject *code; |
| 153 | PyFrameObject *frame; |
| 154 | PyObject *exc, *val, *tb; |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 155 | |
| 156 | /* Save and clear the current exception. Python functions must not be |
| 157 | called with an exception set. Calling Python functions happens when |
| 158 | the codec of the filesystem encoding is implemented in pure Python. */ |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 159 | PyErr_Fetch(&exc, &val, &tb); |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 160 | |
| 161 | globals = PyDict_New(); |
| 162 | if (!globals) |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 163 | goto error; |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 164 | code = PyCode_NewEmpty(filename, funcname, lineno); |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 165 | if (!code) { |
| 166 | Py_DECREF(globals); |
| 167 | goto error; |
| 168 | } |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 169 | frame = PyFrame_New(PyThreadState_Get(), code, globals, NULL); |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 170 | Py_DECREF(globals); |
| 171 | Py_DECREF(code); |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 172 | if (!frame) |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 173 | goto error; |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 174 | frame->f_lineno = lineno; |
| 175 | |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 176 | PyErr_Restore(exc, val, tb); |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 177 | PyTraceBack_Here(frame); |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 178 | Py_DECREF(frame); |
| 179 | return; |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 180 | |
Serhiy Storchaka | 04eb777 | 2016-10-18 13:23:18 +0300 | [diff] [blame] | 181 | error: |
| 182 | _PyErr_ChainExceptions(exc, val, tb); |
Antoine Pitrou | 0ddbf47 | 2014-10-08 20:00:09 +0200 | [diff] [blame] | 183 | } |
| 184 | |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 185 | static PyObject * |
| 186 | _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] | 187 | { |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 188 | Py_ssize_t i; |
| 189 | PyObject *binary; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 190 | PyObject *v; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 191 | Py_ssize_t npath; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 192 | size_t taillen; |
| 193 | PyObject *syspath; |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 194 | PyObject *path; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 195 | const char* tail; |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 196 | PyObject *filebytes; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 197 | const char* filepath; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 198 | Py_ssize_t len; |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 199 | PyObject* result; |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 200 | |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 201 | filebytes = PyUnicode_EncodeFSDefault(filename); |
| 202 | if (filebytes == NULL) { |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 203 | PyErr_Clear(); |
| 204 | return NULL; |
| 205 | } |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 206 | filepath = PyBytes_AS_STRING(filebytes); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 207 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 208 | /* Search tail of filename in sys.path before giving up */ |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 209 | tail = strrchr(filepath, SEP); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 210 | if (tail == NULL) |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 211 | tail = filepath; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 212 | else |
| 213 | tail++; |
| 214 | taillen = strlen(tail); |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 215 | |
Victor Stinner | bd303c1 | 2013-11-07 23:07:29 +0100 | [diff] [blame] | 216 | syspath = _PySys_GetObjectId(&PyId_path); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 217 | if (syspath == NULL || !PyList_Check(syspath)) |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 218 | goto error; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 219 | npath = PyList_Size(syspath); |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 220 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 221 | for (i = 0; i < npath; i++) { |
| 222 | v = PyList_GetItem(syspath, i); |
| 223 | if (v == NULL) { |
| 224 | PyErr_Clear(); |
| 225 | break; |
| 226 | } |
| 227 | if (!PyUnicode_Check(v)) |
| 228 | continue; |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 229 | path = PyUnicode_EncodeFSDefault(v); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 230 | if (path == NULL) { |
| 231 | PyErr_Clear(); |
| 232 | continue; |
| 233 | } |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 234 | len = PyBytes_GET_SIZE(path); |
| 235 | if (len + 1 + (Py_ssize_t)taillen >= (Py_ssize_t)namelen - 1) { |
| 236 | Py_DECREF(path); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 237 | continue; /* Too long */ |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 238 | } |
| 239 | strcpy(namebuf, PyBytes_AS_STRING(path)); |
| 240 | Py_DECREF(path); |
Victor Stinner | 98ea54c | 2014-08-15 23:30:40 +0200 | [diff] [blame] | 241 | if (strlen(namebuf) != (size_t)len) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 242 | continue; /* v contains '\0' */ |
| 243 | if (len > 0 && namebuf[len-1] != SEP) |
| 244 | namebuf[len++] = SEP; |
| 245 | strcpy(namebuf+len, tail); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 246 | |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 247 | binary = _PyObject_CallMethodId(io, &PyId_open, "ss", namebuf, "rb"); |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 248 | if (binary != NULL) { |
| 249 | result = binary; |
| 250 | goto finally; |
| 251 | } |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 252 | PyErr_Clear(); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 253 | } |
Victor Stinner | 4c7c8c3 | 2010-10-16 13:14:10 +0000 | [diff] [blame] | 254 | goto error; |
| 255 | |
| 256 | error: |
| 257 | result = NULL; |
| 258 | finally: |
| 259 | Py_DECREF(filebytes); |
| 260 | return result; |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 261 | } |
| 262 | |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 263 | int |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 264 | _Py_DisplaySourceLine(PyObject *f, PyObject *filename, int lineno, int indent) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 265 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 266 | int err = 0; |
| 267 | int fd; |
| 268 | int i; |
| 269 | char *found_encoding; |
| 270 | char *encoding; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 271 | PyObject *io; |
| 272 | PyObject *binary; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 273 | PyObject *fob = NULL; |
| 274 | PyObject *lineobj = NULL; |
Antoine Pitrou | b86680e | 2010-10-14 21:15:17 +0000 | [diff] [blame] | 275 | PyObject *res; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 276 | char buf[MAXPATHLEN+1]; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 277 | int kind; |
| 278 | void *data; |
Christian Heimes | 679db4a | 2008-01-18 09:56:22 +0000 | [diff] [blame] | 279 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 280 | /* open the file */ |
| 281 | if (filename == NULL) |
| 282 | return 0; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 283 | |
| 284 | io = PyImport_ImportModuleNoBlock("io"); |
| 285 | if (io == NULL) |
| 286 | return -1; |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 287 | binary = _PyObject_CallMethodId(io, &PyId_open, "Os", filename, "rb"); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 288 | |
| 289 | if (binary == NULL) { |
Victor Stinner | ceceaa0 | 2013-07-16 00:32:14 +0200 | [diff] [blame] | 290 | PyErr_Clear(); |
| 291 | |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 292 | binary = _Py_FindSourceFile(filename, buf, sizeof(buf), io); |
| 293 | if (binary == NULL) { |
| 294 | Py_DECREF(io); |
Victor Stinner | ceceaa0 | 2013-07-16 00:32:14 +0200 | [diff] [blame] | 295 | return -1; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 296 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 297 | } |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 298 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 299 | /* use the right encoding to decode the file as unicode */ |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 300 | fd = PyObject_AsFileDescriptor(binary); |
Christian Heimes | 8c077bc | 2013-07-21 01:53:10 +0200 | [diff] [blame] | 301 | if (fd < 0) { |
| 302 | Py_DECREF(io); |
| 303 | Py_DECREF(binary); |
Benjamin Peterson | 04b01dc | 2013-07-21 13:26:13 -0700 | [diff] [blame] | 304 | return 0; |
Christian Heimes | 8c077bc | 2013-07-21 01:53:10 +0200 | [diff] [blame] | 305 | } |
Victor Stinner | fe7c5b5 | 2011-04-05 01:48:03 +0200 | [diff] [blame] | 306 | found_encoding = PyTokenizer_FindEncodingFilename(fd, filename); |
Victor Stinner | 5272fa9 | 2013-12-19 13:39:32 +0100 | [diff] [blame] | 307 | if (found_encoding == NULL) |
| 308 | PyErr_Clear(); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 309 | encoding = (found_encoding != NULL) ? found_encoding : "utf-8"; |
Christian Heimes | 1f34729 | 2013-07-21 02:12:35 +0200 | [diff] [blame] | 310 | /* Reset position */ |
| 311 | if (lseek(fd, 0, SEEK_SET) == (off_t)-1) { |
| 312 | Py_DECREF(io); |
| 313 | Py_DECREF(binary); |
| 314 | PyMem_FREE(found_encoding); |
Benjamin Peterson | 04b01dc | 2013-07-21 13:26:13 -0700 | [diff] [blame] | 315 | return 0; |
Christian Heimes | 1f34729 | 2013-07-21 02:12:35 +0200 | [diff] [blame] | 316 | } |
Martin v. Löwis | afe55bb | 2011-10-09 10:38:36 +0200 | [diff] [blame] | 317 | fob = _PyObject_CallMethodId(io, &PyId_TextIOWrapper, "Os", binary, encoding); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 318 | Py_DECREF(io); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 319 | PyMem_FREE(found_encoding); |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 320 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 321 | if (fob == NULL) { |
| 322 | PyErr_Clear(); |
Victor Stinner | 81f241a | 2015-03-25 02:25:25 +0100 | [diff] [blame] | 323 | |
Victor Stinner | 3466bde | 2016-09-05 18:16:01 -0700 | [diff] [blame] | 324 | res = _PyObject_CallMethodId(binary, &PyId_close, NULL); |
Victor Stinner | 81f241a | 2015-03-25 02:25:25 +0100 | [diff] [blame] | 325 | Py_DECREF(binary); |
| 326 | if (res) |
| 327 | Py_DECREF(res); |
| 328 | else |
| 329 | PyErr_Clear(); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 330 | return 0; |
| 331 | } |
Victor Stinner | 81f241a | 2015-03-25 02:25:25 +0100 | [diff] [blame] | 332 | Py_DECREF(binary); |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 333 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 334 | /* get the line number lineno */ |
| 335 | for (i = 0; i < lineno; i++) { |
| 336 | Py_XDECREF(lineobj); |
| 337 | lineobj = PyFile_GetLine(fob, -1); |
| 338 | if (!lineobj) { |
Victor Stinner | 5e78f4d | 2014-10-30 10:17:27 +0100 | [diff] [blame] | 339 | PyErr_Clear(); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 340 | err = -1; |
| 341 | break; |
| 342 | } |
| 343 | } |
Victor Stinner | 3466bde | 2016-09-05 18:16:01 -0700 | [diff] [blame] | 344 | res = _PyObject_CallMethodId(fob, &PyId_close, NULL); |
Antoine Pitrou | b86680e | 2010-10-14 21:15:17 +0000 | [diff] [blame] | 345 | if (res) |
| 346 | Py_DECREF(res); |
| 347 | else |
| 348 | PyErr_Clear(); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 349 | Py_DECREF(fob); |
| 350 | if (!lineobj || !PyUnicode_Check(lineobj)) { |
| 351 | Py_XDECREF(lineobj); |
| 352 | return err; |
| 353 | } |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 354 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 355 | /* remove the indentation of the line */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 356 | kind = PyUnicode_KIND(lineobj); |
| 357 | data = PyUnicode_DATA(lineobj); |
| 358 | for (i=0; i < PyUnicode_GET_LENGTH(lineobj); i++) { |
| 359 | Py_UCS4 ch = PyUnicode_READ(kind, data, i); |
| 360 | if (ch != ' ' && ch != '\t' && ch != '\014') |
| 361 | break; |
| 362 | } |
| 363 | if (i) { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 364 | PyObject *truncated; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 365 | truncated = PyUnicode_Substring(lineobj, i, PyUnicode_GET_LENGTH(lineobj)); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 366 | if (truncated) { |
| 367 | Py_DECREF(lineobj); |
| 368 | lineobj = truncated; |
| 369 | } else { |
| 370 | PyErr_Clear(); |
| 371 | } |
| 372 | } |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 373 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 374 | /* Write some spaces before the line */ |
| 375 | strcpy(buf, " "); |
| 376 | assert (strlen(buf) == 10); |
| 377 | while (indent > 0) { |
Benjamin Peterson | 0f9b7d3 | 2013-07-21 13:29:37 -0700 | [diff] [blame] | 378 | if (indent < 10) |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 379 | buf[indent] = '\0'; |
| 380 | err = PyFile_WriteString(buf, f); |
| 381 | if (err != 0) |
| 382 | break; |
| 383 | indent -= 10; |
| 384 | } |
Amaury Forgeot d'Arc | cf8016a | 2008-10-09 23:37:48 +0000 | [diff] [blame] | 385 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 386 | /* finally display the line */ |
| 387 | if (err == 0) |
| 388 | err = PyFile_WriteObject(lineobj, f, Py_PRINT_RAW); |
| 389 | Py_DECREF(lineobj); |
| 390 | if (err == 0) |
| 391 | err = PyFile_WriteString("\n", f); |
| 392 | return err; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 393 | } |
| 394 | |
Guido van Rossum | 7e8d26d | 1997-05-22 22:35:47 +0000 | [diff] [blame] | 395 | static int |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 396 | tb_displayline(PyObject *f, PyObject *filename, int lineno, PyObject *name) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 397 | { |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 398 | int err; |
| 399 | PyObject *line; |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 400 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 401 | if (filename == NULL || name == NULL) |
| 402 | return -1; |
Victor Stinner | 0fe25a4 | 2010-06-17 23:08:50 +0000 | [diff] [blame] | 403 | line = PyUnicode_FromFormat(" File \"%U\", line %d, in %U\n", |
| 404 | filename, lineno, name); |
| 405 | if (line == NULL) |
| 406 | return -1; |
| 407 | err = PyFile_WriteObject(line, f, Py_PRINT_RAW); |
| 408 | Py_DECREF(line); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 409 | if (err != 0) |
| 410 | return err; |
Kristján Valur Jónsson | c5963d3 | 2012-07-19 21:02:03 +0000 | [diff] [blame] | 411 | /* ignore errors since we can't report them, can we? */ |
| 412 | if (_Py_DisplaySourceLine(f, filename, lineno, 4)) |
| 413 | PyErr_Clear(); |
| 414 | return err; |
Christian Heimes | 33fe809 | 2008-04-13 13:53:33 +0000 | [diff] [blame] | 415 | } |
| 416 | |
| 417 | static int |
| 418 | tb_printinternal(PyTracebackObject *tb, PyObject *f, long limit) |
| 419 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 420 | int err = 0; |
| 421 | long depth = 0; |
Nick Coghlan | d003423 | 2016-08-15 13:11:34 +1000 | [diff] [blame] | 422 | PyObject *last_file = NULL; |
| 423 | int last_line = -1; |
| 424 | PyObject *last_name = NULL; |
| 425 | long cnt = 0; |
| 426 | PyObject *line; |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 427 | PyTracebackObject *tb1 = tb; |
| 428 | while (tb1 != NULL) { |
| 429 | depth++; |
| 430 | tb1 = tb1->tb_next; |
| 431 | } |
| 432 | while (tb != NULL && err == 0) { |
| 433 | if (depth <= limit) { |
Nick Coghlan | d003423 | 2016-08-15 13:11:34 +1000 | [diff] [blame] | 434 | if (last_file != NULL && |
| 435 | tb->tb_frame->f_code->co_filename == last_file && |
| 436 | last_line != -1 && tb->tb_lineno == last_line && |
| 437 | last_name != NULL && |
| 438 | tb->tb_frame->f_code->co_name == last_name) { |
| 439 | cnt++; |
| 440 | } else { |
| 441 | if (cnt > 3) { |
| 442 | line = PyUnicode_FromFormat( |
| 443 | " [Previous line repeated %d more times]\n", cnt-3); |
| 444 | err = PyFile_WriteObject(line, f, Py_PRINT_RAW); |
Victor Stinner | a88b2f4 | 2016-08-20 03:05:13 +0200 | [diff] [blame] | 445 | Py_DECREF(line); |
Nick Coghlan | d003423 | 2016-08-15 13:11:34 +1000 | [diff] [blame] | 446 | } |
| 447 | last_file = tb->tb_frame->f_code->co_filename; |
| 448 | last_line = tb->tb_lineno; |
| 449 | last_name = tb->tb_frame->f_code->co_name; |
| 450 | cnt = 0; |
| 451 | } |
| 452 | if (cnt < 3) |
| 453 | err = tb_displayline(f, |
| 454 | tb->tb_frame->f_code->co_filename, |
| 455 | tb->tb_lineno, |
| 456 | tb->tb_frame->f_code->co_name); |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 457 | } |
| 458 | depth--; |
| 459 | tb = tb->tb_next; |
| 460 | if (err == 0) |
| 461 | err = PyErr_CheckSignals(); |
| 462 | } |
Nick Coghlan | d003423 | 2016-08-15 13:11:34 +1000 | [diff] [blame] | 463 | if (cnt > 3) { |
| 464 | line = PyUnicode_FromFormat( |
| 465 | " [Previous line repeated %d more times]\n", cnt-3); |
| 466 | err = PyFile_WriteObject(line, f, Py_PRINT_RAW); |
Victor Stinner | a88b2f4 | 2016-08-20 03:05:13 +0200 | [diff] [blame] | 467 | Py_DECREF(line); |
Nick Coghlan | d003423 | 2016-08-15 13:11:34 +1000 | [diff] [blame] | 468 | } |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 469 | return err; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 470 | } |
| 471 | |
Christian Heimes | 0fbab7f | 2007-12-04 21:55:18 +0000 | [diff] [blame] | 472 | #define PyTraceBack_LIMIT 1000 |
| 473 | |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 474 | int |
Thomas Wouters | f70ef4f | 2000-07-22 18:47:25 +0000 | [diff] [blame] | 475 | PyTraceBack_Print(PyObject *v, PyObject *f) |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 476 | { |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 477 | int err; |
| 478 | PyObject *limitv; |
| 479 | long limit = PyTraceBack_LIMIT; |
Christian Heimes | 0fbab7f | 2007-12-04 21:55:18 +0000 | [diff] [blame] | 480 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 481 | if (v == NULL) |
| 482 | return 0; |
| 483 | if (!PyTraceBack_Check(v)) { |
| 484 | PyErr_BadInternalCall(); |
| 485 | return -1; |
| 486 | } |
| 487 | limitv = PySys_GetObject("tracebacklimit"); |
| 488 | if (limitv) { |
| 489 | PyObject *exc_type, *exc_value, *exc_tb; |
Christian Heimes | 0fbab7f | 2007-12-04 21:55:18 +0000 | [diff] [blame] | 490 | |
Antoine Pitrou | f95a1b3 | 2010-05-09 15:52:27 +0000 | [diff] [blame] | 491 | PyErr_Fetch(&exc_type, &exc_value, &exc_tb); |
| 492 | limit = PyLong_AsLong(limitv); |
| 493 | if (limit == -1 && PyErr_Occurred()) { |
| 494 | if (PyErr_ExceptionMatches(PyExc_OverflowError)) { |
| 495 | limit = PyTraceBack_LIMIT; |
| 496 | } |
| 497 | else { |
| 498 | Py_XDECREF(exc_type); |
| 499 | Py_XDECREF(exc_value); |
| 500 | Py_XDECREF(exc_tb); |
| 501 | return 0; |
| 502 | } |
| 503 | } |
| 504 | else if (limit <= 0) { |
| 505 | limit = PyTraceBack_LIMIT; |
| 506 | } |
| 507 | PyErr_Restore(exc_type, exc_value, exc_tb); |
| 508 | } |
| 509 | err = PyFile_WriteString("Traceback (most recent call last):\n", f); |
| 510 | if (!err) |
| 511 | err = tb_printinternal((PyTracebackObject *)v, f, limit); |
| 512 | return err; |
Guido van Rossum | 3f5da24 | 1990-12-20 15:06:42 +0000 | [diff] [blame] | 513 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 514 | |
| 515 | /* Reverse a string. For example, "abcd" becomes "dcba". |
| 516 | |
| 517 | This function is signal safe. */ |
| 518 | |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 519 | void |
| 520 | _Py_DumpDecimal(int fd, unsigned long value) |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 521 | { |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 522 | /* maximum number of characters required for output of %lld or %p. |
| 523 | We need at most ceil(log10(256)*SIZEOF_LONG_LONG) digits, |
| 524 | plus 1 for the null byte. 53/22 is an upper bound for log10(256). */ |
| 525 | char buffer[1 + (sizeof(unsigned long)*53-1) / 22 + 1]; |
| 526 | char *ptr, *end; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 527 | |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 528 | end = &buffer[Py_ARRAY_LENGTH(buffer) - 1]; |
| 529 | ptr = end; |
| 530 | *ptr = '\0'; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 531 | do { |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 532 | --ptr; |
| 533 | assert(ptr >= buffer); |
| 534 | *ptr = '0' + (value % 10); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 535 | value /= 10; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 536 | } while (value); |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 537 | |
| 538 | _Py_write_noraise(fd, ptr, end - ptr); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 539 | } |
| 540 | |
Guido van Rossum | 7be5d7d | 2013-10-20 18:21:02 -0700 | [diff] [blame] | 541 | /* Format an integer in range [0; 0xffffffff] to hexadecimal of 'width' digits, |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 542 | and write it into the file fd. |
| 543 | |
| 544 | This function is signal safe. */ |
| 545 | |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 546 | void |
| 547 | _Py_DumpHexadecimal(int fd, unsigned long value, Py_ssize_t width) |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 548 | { |
Victor Stinner | 013024e | 2016-03-16 09:43:14 +0100 | [diff] [blame] | 549 | char buffer[sizeof(unsigned long) * 2 + 1], *ptr, *end; |
| 550 | const Py_ssize_t size = Py_ARRAY_LENGTH(buffer) - 1; |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 551 | |
| 552 | if (width > size) |
| 553 | width = size; |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 554 | /* it's ok if width is negative */ |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 555 | |
Victor Stinner | 013024e | 2016-03-16 09:43:14 +0100 | [diff] [blame] | 556 | end = &buffer[size]; |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 557 | ptr = end; |
| 558 | *ptr = '\0'; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 559 | do { |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 560 | --ptr; |
| 561 | assert(ptr >= buffer); |
| 562 | *ptr = Py_hexdigits[value & 15]; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 563 | value >>= 4; |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 564 | } while ((end - ptr) < width || value); |
| 565 | |
| 566 | _Py_write_noraise(fd, ptr, end - ptr); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 567 | } |
| 568 | |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 569 | void |
| 570 | _Py_DumpASCII(int fd, PyObject *text) |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 571 | { |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 572 | PyASCIIObject *ascii = (PyASCIIObject *)text; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 573 | Py_ssize_t i, size; |
| 574 | int truncated; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 575 | int kind; |
Victor Stinner | a336de7 | 2011-10-05 22:44:12 +0200 | [diff] [blame] | 576 | void *data = NULL; |
| 577 | wchar_t *wstr = NULL; |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 578 | Py_UCS4 ch; |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 579 | |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 580 | if (!PyUnicode_Check(text)) |
| 581 | return; |
| 582 | |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 583 | size = ascii->length; |
| 584 | kind = ascii->state.kind; |
Victor Stinner | 1c3069a | 2016-03-23 16:10:07 +0100 | [diff] [blame] | 585 | if (kind == PyUnicode_WCHAR_KIND) { |
| 586 | wstr = ((PyASCIIObject *)text)->wstr; |
| 587 | if (wstr == NULL) |
| 588 | return; |
| 589 | size = ((PyCompactUnicodeObject *)text)->wstr_length; |
| 590 | } |
| 591 | else if (ascii->state.compact) { |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 592 | if (ascii->state.ascii) |
| 593 | data = ((PyASCIIObject*)text) + 1; |
| 594 | else |
| 595 | data = ((PyCompactUnicodeObject*)text) + 1; |
| 596 | } |
Victor Stinner | 1c3069a | 2016-03-23 16:10:07 +0100 | [diff] [blame] | 597 | else { |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 598 | data = ((PyUnicodeObject *)text)->data.any; |
| 599 | if (data == NULL) |
| 600 | return; |
| 601 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 602 | |
| 603 | if (MAX_STRING_LENGTH < size) { |
| 604 | size = MAX_STRING_LENGTH; |
| 605 | truncated = 1; |
| 606 | } |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 607 | else { |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 608 | truncated = 0; |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 609 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 610 | |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 611 | for (i=0; i < size; i++) { |
Victor Stinner | a336de7 | 2011-10-05 22:44:12 +0200 | [diff] [blame] | 612 | if (kind != PyUnicode_WCHAR_KIND) |
| 613 | ch = PyUnicode_READ(kind, data, i); |
| 614 | else |
| 615 | ch = wstr[i]; |
Victor Stinner | b86f08f | 2014-10-03 14:18:09 +0200 | [diff] [blame] | 616 | if (' ' <= ch && ch <= 126) { |
| 617 | /* printable ASCII character */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 618 | char c = (char)ch; |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 619 | _Py_write_noraise(fd, &c, 1); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 620 | } |
Victor Stinner | b86f08f | 2014-10-03 14:18:09 +0200 | [diff] [blame] | 621 | else if (ch <= 0xff) { |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 622 | PUTS(fd, "\\x"); |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 623 | _Py_DumpHexadecimal(fd, ch, 2); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 624 | } |
Victor Stinner | b86f08f | 2014-10-03 14:18:09 +0200 | [diff] [blame] | 625 | else if (ch <= 0xffff) { |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 626 | PUTS(fd, "\\u"); |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 627 | _Py_DumpHexadecimal(fd, ch, 4); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 628 | } |
| 629 | else { |
| 630 | PUTS(fd, "\\U"); |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 631 | _Py_DumpHexadecimal(fd, ch, 8); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 632 | } |
| 633 | } |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 634 | if (truncated) { |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 635 | PUTS(fd, "..."); |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 636 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 637 | } |
| 638 | |
| 639 | /* Write a frame into the file fd: "File "xxx", line xxx in xxx". |
| 640 | |
| 641 | This function is signal safe. */ |
| 642 | |
| 643 | static void |
| 644 | dump_frame(int fd, PyFrameObject *frame) |
| 645 | { |
| 646 | PyCodeObject *code; |
| 647 | int lineno; |
| 648 | |
| 649 | code = frame->f_code; |
| 650 | PUTS(fd, " File "); |
| 651 | if (code != NULL && code->co_filename != NULL |
| 652 | && PyUnicode_Check(code->co_filename)) |
| 653 | { |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 654 | PUTS(fd, "\""); |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 655 | _Py_DumpASCII(fd, code->co_filename); |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 656 | PUTS(fd, "\""); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 657 | } else { |
| 658 | PUTS(fd, "???"); |
| 659 | } |
| 660 | |
| 661 | /* PyFrame_GetLineNumber() was introduced in Python 2.7.0 and 3.2.0 */ |
Martin v. Löwis | d63a3b8 | 2011-09-28 07:41:54 +0200 | [diff] [blame] | 662 | lineno = PyCode_Addr2Line(code, frame->f_lasti); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 663 | PUTS(fd, ", line "); |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 664 | if (lineno >= 0) { |
| 665 | _Py_DumpDecimal(fd, (unsigned long)lineno); |
| 666 | } |
| 667 | else { |
| 668 | PUTS(fd, "???"); |
| 669 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 670 | PUTS(fd, " in "); |
| 671 | |
| 672 | if (code != NULL && code->co_name != NULL |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 673 | && PyUnicode_Check(code->co_name)) { |
| 674 | _Py_DumpASCII(fd, code->co_name); |
| 675 | } |
| 676 | else { |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 677 | PUTS(fd, "???"); |
Victor Stinner | 89e7cdc | 2016-03-15 21:49:37 +0100 | [diff] [blame] | 678 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 679 | |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 680 | PUTS(fd, "\n"); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 681 | } |
| 682 | |
Victor Stinner | fcb88c4 | 2011-04-01 15:34:01 +0200 | [diff] [blame] | 683 | static void |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 684 | dump_traceback(int fd, PyThreadState *tstate, int write_header) |
| 685 | { |
| 686 | PyFrameObject *frame; |
| 687 | unsigned int depth; |
| 688 | |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 689 | if (write_header) |
Guido van Rossum | 7be5d7d | 2013-10-20 18:21:02 -0700 | [diff] [blame] | 690 | PUTS(fd, "Stack (most recent call first):\n"); |
Victor Stinner | fcb88c4 | 2011-04-01 15:34:01 +0200 | [diff] [blame] | 691 | |
| 692 | frame = _PyThreadState_GetFrame(tstate); |
| 693 | if (frame == NULL) |
| 694 | return; |
| 695 | |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 696 | depth = 0; |
| 697 | while (frame != NULL) { |
| 698 | if (MAX_FRAME_DEPTH <= depth) { |
| 699 | PUTS(fd, " ...\n"); |
| 700 | break; |
| 701 | } |
| 702 | if (!PyFrame_Check(frame)) |
| 703 | break; |
| 704 | dump_frame(fd, frame); |
| 705 | frame = frame->f_back; |
| 706 | depth++; |
| 707 | } |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 708 | } |
| 709 | |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 710 | /* Dump the traceback of a Python thread into fd. Use write() to write the |
| 711 | traceback and retry if write() is interrupted by a signal (failed with |
| 712 | EINTR), but don't call the Python signal handler. |
| 713 | |
| 714 | The caller is responsible to call PyErr_CheckSignals() to call Python signal |
| 715 | handlers if signals were received. */ |
Victor Stinner | fcb88c4 | 2011-04-01 15:34:01 +0200 | [diff] [blame] | 716 | void |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 717 | _Py_DumpTraceback(int fd, PyThreadState *tstate) |
| 718 | { |
Victor Stinner | fcb88c4 | 2011-04-01 15:34:01 +0200 | [diff] [blame] | 719 | dump_traceback(fd, tstate, 1); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 720 | } |
| 721 | |
| 722 | /* Write the thread identifier into the file 'fd': "Current thread 0xHHHH:\" if |
| 723 | is_current is true, "Thread 0xHHHH:\n" otherwise. |
| 724 | |
| 725 | This function is signal safe. */ |
| 726 | |
| 727 | static void |
| 728 | write_thread_id(int fd, PyThreadState *tstate, int is_current) |
| 729 | { |
| 730 | if (is_current) |
| 731 | PUTS(fd, "Current thread 0x"); |
| 732 | else |
| 733 | PUTS(fd, "Thread 0x"); |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 734 | _Py_DumpHexadecimal(fd, |
Serhiy Storchaka | aefa7eb | 2017-03-23 15:48:39 +0200 | [diff] [blame] | 735 | tstate->thread_id, |
Victor Stinner | bd31b7c | 2016-03-23 10:32:26 +0100 | [diff] [blame] | 736 | sizeof(unsigned long) * 2); |
Guido van Rossum | 7be5d7d | 2013-10-20 18:21:02 -0700 | [diff] [blame] | 737 | PUTS(fd, " (most recent call first):\n"); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 738 | } |
| 739 | |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 740 | /* Dump the traceback of all Python threads into fd. Use write() to write the |
| 741 | traceback and retry if write() is interrupted by a signal (failed with |
| 742 | EINTR), but don't call the Python signal handler. |
| 743 | |
| 744 | The caller is responsible to call PyErr_CheckSignals() to call Python signal |
| 745 | handlers if signals were received. */ |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 746 | const char* |
| 747 | _Py_DumpTracebackThreads(int fd, PyInterpreterState *interp, |
Victor Stinner | 861d9ab | 2016-03-16 22:45:24 +0100 | [diff] [blame] | 748 | PyThreadState *current_tstate) |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 749 | { |
| 750 | PyThreadState *tstate; |
| 751 | unsigned int nthreads; |
| 752 | |
Victor Stinner | 861d9ab | 2016-03-16 22:45:24 +0100 | [diff] [blame] | 753 | if (current_tstate == NULL) { |
| 754 | /* _Py_DumpTracebackThreads() is called from signal handlers by |
| 755 | faulthandler. |
| 756 | |
| 757 | SIGSEGV, SIGFPE, SIGABRT, SIGBUS and SIGILL are synchronous signals |
| 758 | and are thus delivered to the thread that caused the fault. Get the |
| 759 | Python thread state of the current thread. |
| 760 | |
| 761 | PyThreadState_Get() doesn't give the state of the thread that caused |
| 762 | the fault if the thread released the GIL, and so this function |
| 763 | cannot be used. Read the thread local storage (TLS) instead: call |
| 764 | PyGILState_GetThisThreadState(). */ |
| 765 | current_tstate = PyGILState_GetThisThreadState(); |
| 766 | } |
| 767 | |
| 768 | if (interp == NULL) { |
| 769 | if (current_tstate == NULL) { |
| 770 | interp = _PyGILState_GetInterpreterStateUnsafe(); |
| 771 | if (interp == NULL) { |
| 772 | /* We need the interpreter state to get Python threads */ |
| 773 | return "unable to get the interpreter state"; |
| 774 | } |
| 775 | } |
| 776 | else { |
| 777 | interp = current_tstate->interp; |
| 778 | } |
| 779 | } |
Victor Stinner | 861d9ab | 2016-03-16 22:45:24 +0100 | [diff] [blame] | 780 | assert(interp != NULL); |
| 781 | |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 782 | /* Get the current interpreter from the current thread */ |
| 783 | tstate = PyInterpreterState_ThreadHead(interp); |
| 784 | if (tstate == NULL) |
| 785 | return "unable to get the thread head state"; |
| 786 | |
| 787 | /* Dump the traceback of each thread */ |
| 788 | tstate = PyInterpreterState_ThreadHead(interp); |
| 789 | nthreads = 0; |
Steve Dower | 8fc8980 | 2015-04-12 00:26:27 -0400 | [diff] [blame] | 790 | _Py_BEGIN_SUPPRESS_IPH |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 791 | do |
| 792 | { |
| 793 | if (nthreads != 0) |
Victor Stinner | 97f86b8 | 2015-04-01 18:38:01 +0200 | [diff] [blame] | 794 | PUTS(fd, "\n"); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 795 | if (nthreads >= MAX_NTHREADS) { |
| 796 | PUTS(fd, "...\n"); |
| 797 | break; |
| 798 | } |
Victor Stinner | 861d9ab | 2016-03-16 22:45:24 +0100 | [diff] [blame] | 799 | write_thread_id(fd, tstate, tstate == current_tstate); |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 800 | dump_traceback(fd, tstate, 0); |
| 801 | tstate = PyThreadState_Next(tstate); |
| 802 | nthreads++; |
| 803 | } while (tstate != NULL); |
Steve Dower | 8fc8980 | 2015-04-12 00:26:27 -0400 | [diff] [blame] | 804 | _Py_END_SUPPRESS_IPH |
Victor Stinner | 024e37a | 2011-03-31 01:31:06 +0200 | [diff] [blame] | 805 | |
| 806 | return NULL; |
| 807 | } |
| 808 | |