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

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as published
   9   by the Free Software Foundation; either version 2.1 of the License,
  10   or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <pulsecore/core-util.h>
  28
  29 #include "object.h"
  30
  31 const char pa_object_type_id[] = "pa_object";
  32
  33 pa_object *pa_object_new_internal(size_t size, const char *type_id, pa_bool_t (*check_type)(const char *type_id)) {
  34     pa_object *o;
  35
  36     pa_assert(size > sizeof(pa_object));
  37     pa_assert(type_id);
  38
  39     if (!check_type)
  40         check_type = pa_object_check_type;
  41
  42     pa_assert(check_type(type_id));
  43     pa_assert(check_type(pa_object_type_id));
  44
  45     o = pa_xmalloc(size);
  46     PA_REFCNT_INIT(o);
  47     o->type_id = type_id;
  48     o->free = pa_object_free;
  49     o->check_type = check_type;
  50
  51     return o;
  52 }
  53
  54 pa_object *pa_object_ref(pa_object *o) {
  55     pa_object_assert_ref(o);
  56
  57     PA_REFCNT_INC(o);
  58     return o;
  59 }
  60
  61 void pa_object_unref(pa_object *o) {
  62     pa_object_assert_ref(o);
  63
  64     if (PA_REFCNT_DEC(o) <= 0) {
  65         pa_assert(o->free);
  66         o->free(o);
  67     }
  68 }
  69
  70 pa_bool_t pa_object_check_type(const char *type_id) {
  71     pa_assert(type_id);
  72
  73     return type_id == pa_object_type_id;
  74 }