| 1 | /* |
| 2 | * iterator.c |
| 3 | * |
| 4 | * Babeltrace Notification Iterator |
| 5 | * |
| 6 | * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 7 | * |
| 8 | * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com> |
| 9 | * |
| 10 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 11 | * of this software and associated documentation files (the "Software"), to deal |
| 12 | * in the Software without restriction, including without limitation the rights |
| 13 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 14 | * copies of the Software, and to permit persons to whom the Software is |
| 15 | * furnished to do so, subject to the following conditions: |
| 16 | * |
| 17 | * The above copyright notice and this permission notice shall be included in |
| 18 | * all copies or substantial portions of the Software. |
| 19 | * |
| 20 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 21 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 23 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 24 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 25 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 26 | * SOFTWARE. |
| 27 | */ |
| 28 | |
| 29 | #include <babeltrace/compiler.h> |
| 30 | #include <babeltrace/ref.h> |
| 31 | #include <babeltrace/plugin/component.h> |
| 32 | #include <babeltrace/plugin/source-internal.h> |
| 33 | #include <babeltrace/plugin/notification/iterator.h> |
| 34 | #include <babeltrace/plugin/notification/iterator-internal.h> |
| 35 | |
| 36 | static |
| 37 | void bt_notification_iterator_destroy(struct bt_object *obj) |
| 38 | { |
| 39 | struct bt_notification_iterator *iterator; |
| 40 | |
| 41 | assert(obj); |
| 42 | iterator = container_of(obj, struct bt_notification_iterator, |
| 43 | base); |
| 44 | assert(iterator->user_destroy || !iterator->user_data); |
| 45 | if (iterator->user_destroy) { |
| 46 | iterator->user_destroy(iterator); |
| 47 | } |
| 48 | g_free(iterator); |
| 49 | } |
| 50 | |
| 51 | BT_HIDDEN |
| 52 | struct bt_notification_iterator *bt_notification_iterator_create( |
| 53 | struct bt_component *component) |
| 54 | { |
| 55 | struct bt_notification_iterator *iterator = NULL; |
| 56 | |
| 57 | if (!component || |
| 58 | bt_component_get_type(component) != BT_COMPONENT_TYPE_SOURCE) { |
| 59 | goto end; |
| 60 | } |
| 61 | |
| 62 | iterator = g_new0(struct bt_notification_iterator, 1); |
| 63 | if (!iterator) { |
| 64 | goto end; |
| 65 | } |
| 66 | |
| 67 | bt_object_init(iterator, bt_notification_iterator_destroy); |
| 68 | end: |
| 69 | return iterator; |
| 70 | } |
| 71 | |
| 72 | BT_HIDDEN |
| 73 | enum bt_notification_iterator_status bt_notification_iterator_validate( |
| 74 | struct bt_notification_iterator *iterator) |
| 75 | { |
| 76 | enum bt_notification_iterator_status ret = |
| 77 | BT_NOTIFICATION_ITERATOR_STATUS_OK; |
| 78 | |
| 79 | if (!iterator || !iterator->get || !iterator->next) { |
| 80 | ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL; |
| 81 | goto end; |
| 82 | } |
| 83 | end: |
| 84 | return ret; |
| 85 | } |
| 86 | |
| 87 | enum bt_notification_iterator_status bt_notification_iterator_set_get_cb( |
| 88 | struct bt_notification_iterator *iterator, |
| 89 | bt_notification_iterator_get_cb get) |
| 90 | { |
| 91 | enum bt_notification_iterator_status ret = |
| 92 | BT_NOTIFICATION_ITERATOR_STATUS_OK; |
| 93 | |
| 94 | if (!iterator || !get) { |
| 95 | ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL; |
| 96 | goto end; |
| 97 | } |
| 98 | |
| 99 | iterator->get = get; |
| 100 | end: |
| 101 | return ret; |
| 102 | } |
| 103 | |
| 104 | enum bt_notification_iterator_status |
| 105 | bt_notification_iterator_set_next_cb(struct bt_notification_iterator *iterator, |
| 106 | bt_notification_iterator_next_cb next) |
| 107 | { |
| 108 | enum bt_notification_iterator_status ret = |
| 109 | BT_NOTIFICATION_ITERATOR_STATUS_OK; |
| 110 | |
| 111 | if (!iterator || !next) { |
| 112 | ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL; |
| 113 | goto end; |
| 114 | } |
| 115 | |
| 116 | iterator->next = next; |
| 117 | end: |
| 118 | return ret; |
| 119 | } |
| 120 | |
| 121 | enum bt_notification_iterator_status |
| 122 | bt_notification_iterator_set_destroy_cb( |
| 123 | struct bt_notification_iterator *iterator, |
| 124 | bt_notification_iterator_destroy_cb destroy) |
| 125 | { |
| 126 | enum bt_notification_iterator_status ret = |
| 127 | BT_NOTIFICATION_ITERATOR_STATUS_OK; |
| 128 | |
| 129 | if (!iterator || !destroy) { |
| 130 | ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL; |
| 131 | goto end; |
| 132 | } |
| 133 | |
| 134 | iterator->user_destroy = destroy; |
| 135 | end: |
| 136 | return ret; |
| 137 | } |
| 138 | |
| 139 | void *bt_notification_iterator_get_private_data( |
| 140 | struct bt_notification_iterator *iterator) |
| 141 | { |
| 142 | return iterator ? iterator->user_data : NULL; |
| 143 | } |
| 144 | |
| 145 | enum bt_notification_iterator_status |
| 146 | bt_notification_iterator_set_private_data( |
| 147 | struct bt_notification_iterator *iterator, void *data) |
| 148 | { |
| 149 | enum bt_notification_iterator_status ret = |
| 150 | BT_NOTIFICATION_ITERATOR_STATUS_OK; |
| 151 | |
| 152 | if (!iterator || !data) { |
| 153 | ret = BT_NOTIFICATION_ITERATOR_STATUS_INVAL; |
| 154 | goto end; |
| 155 | } |
| 156 | |
| 157 | iterator->user_data = data; |
| 158 | end: |
| 159 | return ret; |
| 160 | } |