lib/object.c

   1 /*
   2  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   3  * Copyright (c) 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to deal
   7  * in the Software without restriction, including without limitation the rights
   8  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9  * copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  */
  23
  24 #define BT_LOG_TAG "OBJECT"
  25 #include <babeltrace/lib-logging-internal.h>
  26
  27 #include <babeltrace/assert-pre-internal.h>
  28 #include <babeltrace/object-internal.h>
  29
  30 void bt_object_get_ref(const void *ptr)
  31 {
  32         struct bt_object *obj = (void *) ptr;
  33
  34         if (unlikely(!obj)) {
  35                 goto end;
  36         }
  37
  38         BT_ASSERT_PRE(obj->is_shared, "Object is not shared: addr=%p", obj);
  39         bt_object_get_no_null_check(obj);
  40
  41 end:
  42         return;
  43 }
  44
  45 void bt_object_put_ref(const void *ptr)
  46 {
  47         struct bt_object *obj = (void *) ptr;
  48
  49         if (unlikely(!obj)) {
  50                 return;
  51         }
  52
  53         BT_ASSERT_PRE(obj->is_shared, "Object is not shared: addr=%p", obj);
  54         BT_ASSERT_PRE(bt_object_get_ref_count(obj) > 0,
  55                 "Decrementing a reference count set to 0: addr=%p", ptr);
  56         bt_object_put_no_null_check(obj);
  57 }