Added shutdown callback.

Also fixed a refcount bug.

diff --git a/src/python.c b/src/python.c
index be50953..a8f32b9 100644 (file)
--- a/src/python.c
+++ b/src/python.c
@@ -25,6 +25,7 @@ static PyThreadState *state;
 
 static cpy_callback_t *cpy_config_callbacks;
 static cpy_callback_t *cpy_init_callbacks;
+static cpy_callback_t *cpy_shutdown_callbacks;
 
 typedef struct {
        PyObject_HEAD      /* No semicolon! */
@@ -172,6 +173,8 @@ static PyObject *cpy_register_generic(cpy_callback_t **list_head, PyObject *args
                        return NULL;
                }
        }
+       Py_INCREF(callback);
+       Py_XINCREF(data);
        c = malloc(sizeof(*c));
        c->name = strdup(name);
        c->callback = callback;
@@ -189,16 +192,35 @@ static PyObject *cpy_register_init(PyObject *self, PyObject *args, PyObject *kwd
        return cpy_register_generic(&cpy_init_callbacks, args, kwds);
 }
 
+static PyObject *cpy_register_shutdown(PyObject *self, PyObject *args, PyObject *kwds) {
+       return cpy_register_generic(&cpy_shutdown_callbacks, args, kwds);
+}
+
 static PyMethodDef cpy_methods[] = {
        {"register_init", (PyCFunction) cpy_register_init, METH_VARARGS | METH_KEYWORDS, "This is an unhelpful text."},
        {"register_config", (PyCFunction) cpy_register_config, METH_VARARGS | METH_KEYWORDS, "This is an unhelpful text."},
+       {"register_shutdown", (PyCFunction) cpy_register_shutdown, METH_VARARGS | METH_KEYWORDS, "This is an unhelpful text."},
        {0, 0, 0, 0}
 };
 
 static int cpy_shutdown(void) {
+       cpy_callback_t *c;
+       PyObject *ret;
+       
        /* This can happen if the module was loaded but not configured. */
        if (state != NULL)
                PyEval_RestoreThread(state);
+
+       for (c = cpy_shutdown_callbacks; c; c = c->next) {
+               if (c->data == NULL)
+                       ret = PyObject_CallObject(c->callback, NULL); /* New reference. */
+               else
+                       ret = PyObject_CallFunctionObjArgs(c->callback, c->data, (void *) 0); /* New reference. */
+               if (ret == NULL)
+                       PyErr_Print(); /* FIXME */
+               else
+                       Py_DECREF(ret);
+       }
        Py_Finalize();
        return 0;
 }