lib/object.c

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