1 /* Copyright 2015 The TensorFlow Authors. All Rights Reserved. 2 3 Licensed under the Apache License, Version 2.0 (the "License"); 4 you may not use this file except in compliance with the License. 5 You may obtain a copy of the License at 6 7 http://www.apache.org/licenses/LICENSE-2.0 8 9 Unless required by applicable law or agreed to in writing, software 10 distributed under the License is distributed on an "AS IS" BASIS, 11 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 See the License for the specific language governing permissions and 13 limitations under the License. 14 ==============================================================================*/ 15 16 #include "tensorflow/python/lib/core/py_util.h" 17 18 #include "tensorflow/core/lib/core/errors.h" 19 #include "tensorflow/core/lib/strings/strcat.h" 20 #include <Python.h> 21 22 namespace tensorflow { 23 namespace { 24 25 // py.__class__.__name__ 26 const char* ClassName(PyObject* py) { 27 /* PyPy doesn't have a separate C API for old-style classes. */ 28 #if PY_MAJOR_VERSION < 3 && !defined(PYPY_VERSION) 29 if (PyClass_Check(py)) 30 return PyString_AS_STRING( 31 CHECK_NOTNULL(reinterpret_cast<PyClassObject*>(py)->cl_name)); 32 if (PyInstance_Check(py)) 33 return PyString_AS_STRING(CHECK_NOTNULL( 34 reinterpret_cast<PyInstanceObject*>(py)->in_class->cl_name)); 35 #endif 36 if (Py_TYPE(py) == &PyType_Type) { 37 return reinterpret_cast<PyTypeObject*>(py)->tp_name; 38 } 39 return Py_TYPE(py)->tp_name; 40 } 41 42 } // end namespace 43 44 string PyExceptionFetch() { 45 CHECK(PyErr_Occurred()) 46 << "Must only call PyExceptionFetch after an exception."; 47 PyObject* ptype; 48 PyObject* pvalue; 49 PyObject* ptraceback; 50 PyErr_Fetch(&ptype, &pvalue, &ptraceback); 51 PyErr_NormalizeException(&ptype, &pvalue, &ptraceback); 52 string err = ClassName(ptype); 53 if (pvalue) { 54 PyObject* str = PyObject_Str(pvalue); 55 if (str) { 56 #if PY_MAJOR_VERSION < 3 57 strings::StrAppend(&err, ": ", PyString_AS_STRING(str)); 58 #else 59 strings::StrAppend(&err, ": ", PyUnicode_AsUTF8(str)); 60 #endif 61 Py_DECREF(str); 62 } 63 Py_DECREF(pvalue); 64 } 65 Py_DECREF(ptype); 66 Py_XDECREF(ptraceback); 67 return err; 68 } 69 70 } // end namespace tensorflow 71
