2 * This file is part of the libsigrokdecode project.
4 * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
21 #include "libsigrokdecode-internal.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */
22 #include "libsigrokdecode.h"
26 static char *py_stringify(PyObject *py_obj)
28 PyObject *py_str, *py_bytes;
31 /* Note: Caller already ran PyGILState_Ensure(). */
36 py_str = PyObject_Str(py_obj);
37 if (!py_str || !PyUnicode_Check(py_str))
40 py_bytes = PyUnicode_AsUTF8String(py_str);
44 str = g_strdup(PyBytes_AsString(py_bytes));
51 srd_dbg("Failed to stringify object.");
56 static char *py_get_string_attr(PyObject *py_obj, const char *attr)
58 PyObject *py_str, *py_bytes;
61 /* Note: Caller already ran PyGILState_Ensure(). */
66 py_str = PyObject_GetAttrString(py_obj, attr);
67 if (!py_str || !PyUnicode_Check(py_str))
70 py_bytes = PyUnicode_AsUTF8String(py_str);
74 str = g_strdup(PyBytes_AsString(py_bytes));
81 srd_dbg("Failed to get object attribute %s.", attr);
87 SRD_PRIV void srd_exception_catch(const char *format, ...)
90 PyObject *py_etype, *py_evalue, *py_etraceback;
91 PyObject *py_mod, *py_func, *py_tracefmt;
92 char *msg, *etype_name, *evalue_str, *tracefmt_str;
93 const char *etype_name_fallback;
94 PyGILState_STATE gstate;
96 py_etype = py_evalue = py_etraceback = py_mod = py_func = NULL;
98 va_start(args, format);
99 msg = g_strdup_vprintf(format, args);
102 gstate = PyGILState_Ensure();
104 PyErr_Fetch(&py_etype, &py_evalue, &py_etraceback);
106 /* No current exception, so just print the message. */
110 PyErr_NormalizeException(&py_etype, &py_evalue, &py_etraceback);
112 etype_name = py_get_string_attr(py_etype, "__name__");
113 evalue_str = py_stringify(py_evalue);
114 etype_name_fallback = (etype_name) ? etype_name : "(unknown exception)";
117 srd_err("%s: %s: %s", etype_name_fallback, msg, evalue_str);
119 srd_err("%s: %s.", etype_name_fallback, msg);
124 /* If there is no traceback object, we are done. */
128 py_mod = py_import_by_name("traceback");
132 py_func = PyObject_GetAttrString(py_mod, "format_exception");
133 if (!py_func || !PyCallable_Check(py_func))
136 /* Call into Python to format the stack trace. */
137 py_tracefmt = PyObject_CallFunctionObjArgs(py_func,
138 py_etype, py_evalue, py_etraceback, NULL);
142 tracefmt_str = py_stringify(py_tracefmt);
143 Py_DECREF(py_tracefmt);
145 /* Log the detailed stack trace. */
147 srd_dbg("%s", tracefmt_str);
148 g_free(tracefmt_str);
154 Py_XDECREF(py_etraceback);
155 Py_XDECREF(py_evalue);
156 Py_XDECREF(py_etype);
161 PyGILState_Release(gstate);