_dbus_bindings/generic.c

   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 #include "dbus_bindings-internal.h"
  27
  28 PyObject *dbus_py_empty_tuple = NULL;
  29
  30 PyObject *
  31 dbus_py_tp_richcompare_by_pointer(PyObject *self,
  32                                   PyObject *other,
  33                                   int op)
  34 {
  35     if (op == Py_EQ || op == Py_NE) {
  36         if (self == other) {
  37             return PyInt_FromLong(op == Py_EQ);
  38         }
  39         return PyInt_FromLong(op == Py_NE);
  40     }
  41     PyErr_SetString(PyExc_TypeError,
  42                     "Instances of this type are not ordered");
  43     return NULL;
  44 }
  45
  46 long
  47 dbus_py_tp_hash_by_pointer(PyObject *self)
  48 {
  49     long hash = (long)self;
  50     return (hash == -1L ? -2L : hash);
  51 }
  52
  53 int
  54 dbus_py_immutable_setattro(PyObject *obj UNUSED,
  55                         PyObject *name UNUSED,
  56                         PyObject *value UNUSED)
  57 {
  58     PyErr_SetString(PyExc_AttributeError, "Object is immutable");
  59     return -1;
  60 }
  61
  62 /* Take the global interpreter lock and decrement the reference count.
  63  * Suitable for calling from a C callback. */
  64 void
  65 dbus_py_take_gil_and_xdecref(PyObject *obj)
  66 {
  67     PyGILState_STATE gil = PyGILState_Ensure();
  68     Py_XDECREF(obj);
  69     PyGILState_Release(gil);
  70 }
  71
  72 dbus_bool_t
  73 dbus_py_init_generic(void)
  74 {
  75     dbus_py_empty_tuple = PyTuple_New(0);
  76     if (!dbus_py_empty_tuple) return 0;
  77     return 1;
  78 }
  79
  80 /* vim:set ft=c cino< sw=4 sts=4 et: */