code.delx.au - pulseaudio/blob - src/pulsecore/object.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   8
   9   PulseAudio is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU Lesser General Public License as published
  11   by the Free Software Foundation; either version 2 of the License,
  12   or (at your option) any later version.
  13
  14   PulseAudio is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with PulseAudio; if not, write to the Free Software
  21   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include "object.h"
  30
  31 pa_object *pa_object_new_internal(size_t size, const char *type_name, int (*check_type)(const char *type_name)) {
  32     pa_object *o;
  33
  34     pa_assert(size > sizeof(pa_object));
  35     pa_assert(type_name);
  36
  37     if (!check_type)
  38         check_type = pa_object_check_type;
  39
  40     pa_assert(check_type(type_name));
  41     pa_assert(check_type("pa_object"));
  42
  43     o = pa_xmalloc(size);
  44     PA_REFCNT_INIT(o);
  45     o->type_name = type_name;
  46     o->free = pa_object_free;
  47     o->check_type = check_type;
  48
  49     return o;
  50 }
  51
  52 pa_object *pa_object_ref(pa_object *o) {
  53     pa_object_assert_ref(o);
  54
  55     PA_REFCNT_INC(o);
  56     return o;
  57 }
  58
  59 void pa_object_unref(pa_object *o) {
  60     pa_object_assert_ref(o);
  61
  62     if (PA_REFCNT_DEC(o) <= 0) {
  63         pa_assert(o->free);
  64         o->free(o);
  65     }
  66 }
  67
  68 int pa_object_check_type(const char *type_name) {
  69     pa_assert(type_name);
  70
  71     return strcmp(type_name, "pa_object") == 0;
  72 }