Add bt_plugin test
[babeltrace.git] / lib / component / component-class.c
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1/*
2 * component-class.c
3 *
4 * Babeltrace Plugin Component Class
33b34c43 5 *
3310b217 6 * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
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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>
33b34c43 30#include <babeltrace/component/component-class-internal.h>
b8a06801 31#include <babeltrace/ref.h>
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32#include <glib.h>
33
34static
b8a06801 35void bt_component_class_destroy(struct bt_object *obj)
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36{
37 struct bt_component_class *class;
33b34c43 38 int i;
fb2dcc52 39
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40 assert(obj);
41 class = container_of(obj, struct bt_component_class, base);
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42
43 /* Call destroy listeners in reverse registration order */
44 for (i = class->destroy_listeners->len - 1; i >= 0; i--) {
45 struct bt_component_class_destroyer_listener *listener =
46 &g_array_index(class->destroy_listeners,
47 struct bt_component_class_destroyer_listener,
48 i);
49
50 listener->func(class, listener->data);
51 }
52
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53 if (class->name) {
54 g_string_free(class->name, TRUE);
55 }
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56 if (class->description) {
57 g_string_free(class->description, TRUE);
58 }
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59 if (class->destroy_listeners) {
60 g_array_free(class->destroy_listeners, TRUE);
61 }
b8a06801 62
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63 g_free(class);
64}
65
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66struct bt_component_class *bt_component_class_create(
67 enum bt_component_type type, const char *name,
33b34c43 68 const char *description, bt_component_init_cb init)
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69{
70 struct bt_component_class *class;
71
72 class = g_new0(struct bt_component_class, 1);
73 if (!class) {
74 goto end;
75 }
76
b8a06801 77 bt_object_init(class, bt_component_class_destroy);
fb2dcc52 78 class->type = type;
4b70dd83 79 class->init = init;
fb2dcc52 80 class->name = g_string_new(name);
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81 class->description = g_string_new(description);
82 if (!class->name || !class->description) {
b8a06801 83 BT_PUT(class);
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84 goto end;
85 }
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86 class->destroy_listeners = g_array_new(FALSE, TRUE,
87 sizeof(struct bt_component_class_destroyer_listener));
88 if (!class->destroy_listeners) {
89 BT_PUT(class);
90 goto end;
91 }
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92end:
93 return class;
94}
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95
96const char *bt_component_class_get_name(
97 struct bt_component_class *component_class)
98{
99 return component_class ? component_class->name->str : NULL;
100}
101
102enum bt_component_type bt_component_class_get_type(
103 struct bt_component_class *component_class)
104{
105 return component_class ? component_class->type :
106 BT_COMPONENT_TYPE_UNKNOWN;
107}
108
33b34c43 109const char *bt_component_class_get_description(
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110 struct bt_component_class *component_class)
111{
33b34c43 112 return component_class ? component_class->description->str : NULL;
38b48196 113}
7c7c0433 114
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115BT_HIDDEN
116int bt_component_class_add_destroy_listener(struct bt_component_class *class,
117 bt_component_class_destroy_listener_func func, void *data)
7c7c0433 118{
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119 int ret = 0;
120 struct bt_component_class_destroyer_listener listener;
121
122 if (!class || !func) {
123 ret = -1;
124 goto end;
125 }
126
127 listener.func = func;
128 listener.data = data;
129 g_array_append_val(class->destroy_listeners, listener);
130
131end:
132 return ret;
7c7c0433 133}
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