| 1 | /* |
| 2 | * source.c |
| 3 | * |
| 4 | * Babeltrace Source Component |
| 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/ref.h> |
| 30 | #include <babeltrace/compiler.h> |
| 31 | #include <babeltrace/plugin/source-internal.h> |
| 32 | #include <babeltrace/plugin/component-internal.h> |
| 33 | #include <babeltrace/plugin/notification/iterator.h> |
| 34 | #include <babeltrace/plugin/notification/iterator-internal.h> |
| 35 | |
| 36 | BT_HIDDEN |
| 37 | enum bt_component_status bt_component_source_validate( |
| 38 | struct bt_component *component) |
| 39 | { |
| 40 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; |
| 41 | struct bt_component_source *source; |
| 42 | |
| 43 | if (!component) { |
| 44 | ret = BT_COMPONENT_STATUS_INVALID; |
| 45 | goto end; |
| 46 | } |
| 47 | |
| 48 | if (!component->class) { |
| 49 | ret = BT_COMPONENT_STATUS_INVALID; |
| 50 | goto end; |
| 51 | } |
| 52 | |
| 53 | if (component->class->type != BT_COMPONENT_TYPE_SOURCE) { |
| 54 | ret = BT_COMPONENT_STATUS_INVALID; |
| 55 | goto end; |
| 56 | } |
| 57 | |
| 58 | source = container_of(component, struct bt_component_source, parent); |
| 59 | if (source->init_iterator) { |
| 60 | ret = BT_COMPONENT_STATUS_INVALID; |
| 61 | goto end; |
| 62 | } |
| 63 | end: |
| 64 | return ret; |
| 65 | } |
| 66 | |
| 67 | BT_HIDDEN |
| 68 | struct bt_component *bt_component_source_create( |
| 69 | struct bt_component_class *class, struct bt_value *params) |
| 70 | { |
| 71 | struct bt_component_source *source = NULL; |
| 72 | enum bt_component_status ret; |
| 73 | |
| 74 | source = g_new0(struct bt_component_source, 1); |
| 75 | if (!source) { |
| 76 | goto end; |
| 77 | } |
| 78 | |
| 79 | source->parent.class = bt_get(class); |
| 80 | ret = bt_component_init(&source->parent, NULL); |
| 81 | if (ret != BT_COMPONENT_STATUS_OK) { |
| 82 | BT_PUT(source); |
| 83 | goto end; |
| 84 | } |
| 85 | end: |
| 86 | return source ? &source->parent : NULL; |
| 87 | } |
| 88 | |
| 89 | enum bt_component_status |
| 90 | bt_component_source_set_iterator_init_cb(struct bt_component *component, |
| 91 | bt_component_source_init_iterator_cb init_iterator) |
| 92 | { |
| 93 | struct bt_component_source *source; |
| 94 | enum bt_component_status ret = BT_COMPONENT_STATUS_OK; |
| 95 | |
| 96 | if (component->class->type != BT_COMPONENT_TYPE_SOURCE) { |
| 97 | ret = BT_COMPONENT_STATUS_INVALID; |
| 98 | goto end; |
| 99 | } |
| 100 | |
| 101 | source = container_of(component, struct bt_component_source, parent); |
| 102 | source->init_iterator = init_iterator; |
| 103 | end: |
| 104 | return ret; |
| 105 | } |
| 106 | |
| 107 | struct bt_notification_iterator *bt_component_source_create_iterator( |
| 108 | struct bt_component *component) |
| 109 | { |
| 110 | enum bt_component_status ret_component; |
| 111 | enum bt_notification_iterator_status ret_iterator; |
| 112 | struct bt_component_source *source; |
| 113 | struct bt_notification_iterator *iterator = NULL; |
| 114 | |
| 115 | if (!component) { |
| 116 | goto end; |
| 117 | } |
| 118 | |
| 119 | if (bt_component_get_type(component) != BT_COMPONENT_TYPE_SOURCE) { |
| 120 | goto end; |
| 121 | } |
| 122 | |
| 123 | iterator = bt_notification_iterator_create(component); |
| 124 | if (!iterator) { |
| 125 | goto end; |
| 126 | } |
| 127 | |
| 128 | source = container_of(component, struct bt_component_source, parent); |
| 129 | assert(source->init_iterator); |
| 130 | ret_component = source->init_iterator(component, iterator); |
| 131 | if (ret_component != BT_COMPONENT_STATUS_OK) { |
| 132 | goto error; |
| 133 | } |
| 134 | |
| 135 | ret_iterator = bt_notification_iterator_validate(iterator); |
| 136 | if (ret_iterator != BT_NOTIFICATION_ITERATOR_STATUS_OK) { |
| 137 | goto error; |
| 138 | } |
| 139 | end: |
| 140 | return iterator; |
| 141 | error: |
| 142 | BT_PUT(iterator); |
| 143 | return iterator; |
| 144 | } |