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