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 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 "object.h"
  28
  29 pa_object *pa_object_new_internal(size_t size, const char *type_name, int (*check_type)(const char *type_name)) {
  30     pa_object *o;
  31
  32     pa_assert(size > sizeof(pa_object));
  33     pa_assert(type_name);
  34
  35     if (!check_type)
  36         check_type = pa_object_check_type;
  37
  38     pa_assert(check_type(type_name));
  39     pa_assert(check_type("pa_object"));
  40
  41     o = pa_xmalloc(size);
  42     PA_REFCNT_INIT(o);
  43     o->type_name = type_name;
  44     o->free = pa_object_free;
  45     o->check_type = check_type;
  46
  47     return o;
  48 }
  49
  50 pa_object *pa_object_ref(pa_object *o) {
  51     pa_object_assert_ref(o);
  52
  53     PA_REFCNT_INC(o);
  54     return o;
  55 }
  56
  57 void pa_object_unref(pa_object *o) {
  58     pa_object_assert_ref(o);
  59
  60     if (PA_REFCNT_DEC(o) <= 0) {
  61         pa_assert(o->free);
  62         o->free(o);
  63     }
  64 }
  65
  66 int pa_object_check_type(const char *type_name) {
  67     pa_assert(type_name);
  68
  69     return strcmp(type_name, "pa_object") == 0;
  70 }