_dbus_bindings/generic-impl.h

   1 /* General Python glue code, used in _dbus_bindings but not actually anything
   2  * to do with D-Bus.
   3  *
   4  * Copyright (C) 2006 Collabora Ltd.
   5  *
   6  * Licensed under the Academic Free License version 2.1
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  23  *
  24  */
  25
  26 #define DEFERRED_ADDRESS(ADDR) 0
  27
  28 #if defined(__GNUC__)
  29 #   if __GNUC__ >= 3
  30 #       define UNUSED __attribute__((__unused__))
  31 #   else
  32 #       define UNUSED /*nothing*/
  33 #   endif
  34 #else
  35 #   define UNUSED /*nothing*/
  36 #endif
  37
  38 #define DEFINE_CHECK(type) \
  39 static inline int type##_Check (PyObject *o) \
  40 { \
  41     return (o->ob_type == &type##Type) \
  42             || PyObject_IsInstance(o, (PyObject *)&type##Type); \
  43 }
  44
  45 static PyObject *empty_tuple = NULL;
  46
  47 static int
  48 Glue_immutable_setattro(PyObject *obj UNUSED,
  49                         PyObject *name UNUSED,
  50                         PyObject *value UNUSED)
  51 {
  52     PyErr_SetString(PyExc_AttributeError, "Object is immutable");
  53     return -1;
  54 }
  55
  56 /* Take the global interpreter lock and decrement the reference count.
  57  * Suitable for calling from a C callback. */
  58 static void
  59 Glue_TakeGILAndXDecref(PyObject *obj)
  60 {
  61     PyGILState_STATE gil = PyGILState_Ensure();
  62     Py_XDECREF(obj);
  63     PyGILState_Release(gil);
  64 }
  65
  66 static inline int
  67 init_generic(void)
  68 {
  69     empty_tuple = PyTuple_New(0);
  70     if (!empty_tuple) return 0;
  71     return 1;
  72 }
  73
  74 /* vim:set ft=c cino< sw=4 sts=4 et: */