[Python 2] put dgpyError as global back

to fix #39 also in Python2

include/dynamic-graph/python/dynamic-graph-py.hh

@@ -183,7 +183,7 @@ __attribute__((unused)) static struct PyModuleDef dynamicGraphModuleDef = {
 #else
 __attribute__((unused)) static struct module_state _state;
 #define GETSTATE(m) (&dynamicgraph::python::_state)
-#define DGPYERROR(m) dynamicgraph::python::_state.dgpyError
+#define DGPYERROR(m) dynamicgraph::python::dgpyError
 #define INITERROR return
 #endif
 

src/dynamic_graph/debug-py.cc

@@ -21,6 +21,10 @@ typedef boost::shared_ptr<std::ofstream> ofstreamShrPtr;
 namespace dynamicgraph {
 namespace python {
 
+#if PY_MAJOR_VERSION == 2
+  extern PyObject* dgpyError;
+# endif
+
 namespace debug {
 
 std::map<std::string, ofstreamShrPtr> mapOfFiles_;

src/dynamic_graph/dynamic-graph-py.cc

@@ -14,6 +14,10 @@
 namespace dynamicgraph {
 namespace python {
 
+#if PY_MAJOR_VERSION == 2
+  PyObject* dgpyError;
+# endif
+
 /**
    \brief plug a signal into another one.
 */
@@ -114,8 +118,7 @@ PyObject* error_out(
     PyObject*, PyObject*
 #endif
 ) {
-  struct module_state* st = GETSTATE(m);
-  PyErr_SetString(st->dgpyError, "something bad happened");
+  PyErr_SetString(DGPYERROR(m), "something bad happened");
   return NULL;
 }
 
@@ -133,30 +136,29 @@ void initwrap(void)
 #endif
 {
 #if PY_MAJOR_VERSION >= 3
-  PyObject* module = PyModule_Create(&dynamicgraph::python::dynamicGraphModuleDef);
+  PyObject* m = PyModule_Create(&dynamicgraph::python::dynamicGraphModuleDef);
 #else
-  PyObject* module = Py_InitModule("wrap", dynamicgraph::python::dynamicGraphMethods);
+  PyObject* m = Py_InitModule("wrap", dynamicgraph::python::dynamicGraphMethods);
 #endif
 
-  if (module == NULL) INITERROR;
-  struct dynamicgraph::python::module_state* st = GETSTATE(module);
+  if (m == NULL) INITERROR;
 
-  st->dgpyError = PyErr_NewException(const_cast<char*>("dynamic_graph.dgpyError"), NULL, NULL);
-  if (st->dgpyError == NULL) {
-    Py_DECREF(module);
+  DGPYERROR(m) = PyErr_NewException(const_cast<char*>("dynamic_graph.dgpyError"), NULL, NULL);
+  if (DGPYERROR(m) == NULL) {
+    Py_DECREF(m);
     INITERROR;
   }
 
-  Py_XINCREF(st->dgpyError);
-  if (PyModule_AddObject(module, "dgpyError", st->dgpyError) < 0) {
-    Py_XDECREF(st->dgpyError);
-    Py_CLEAR(st->dgpyError);
-    Py_DECREF(module);
+  Py_XINCREF(DGPYERROR(m));
+  if (PyModule_AddObject(m, "dgpyError", DGPYERROR(m)) < 0) {
+    Py_XDECREF(DGPYERROR(m));
+    Py_CLEAR(DGPYERROR(m));
+    Py_DECREF(m);
     INITERROR;
   }
 
 #if PY_MAJOR_VERSION >= 3
-  return module;
+  return m;
 #endif
 }
 

src/dynamic_graph/entity-py.cc

@@ -32,6 +32,10 @@ namespace python {
 
 using namespace convert;
 
+#if PY_MAJOR_VERSION == 2
+  extern PyObject* dgpyError;
+# endif
+
 namespace entity {
 
 /**

src/dynamic_graph/pool-py.cc

@@ -10,6 +10,10 @@
 namespace dynamicgraph {
 namespace python {
 
+#if PY_MAJOR_VERSION == 2
+  extern PyObject* dgpyError;
+# endif
+
 namespace pool {
 
 PyObject* writeGraph(

src/dynamic_graph/signal-base-py.cc

@@ -21,6 +21,10 @@ using dynamicgraph::SignalBase;
 namespace dynamicgraph {
 namespace python {
 
+#if PY_MAJOR_VERSION == 2
+  extern PyObject* dgpyError;
+# endif
+
 using namespace convert;
 
 namespace signalBase {