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4a25879c JG |
1 | /* |
2 | * plugin.c | |
3 | * | |
4 | * Babeltrace Plugin | |
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 | ||
2bd8a567 JG |
29 | #include <babeltrace/plugin/plugin-internal.h> |
30 | #include <babeltrace/babeltrace-internal.h> | |
31 | #include <babeltrace/compiler.h> | |
32 | ||
33 | static void bt_plugin_destroy(struct bt_ctf_ref *ref); | |
34 | ||
4a25879c JG |
35 | const char *bt_plugin_get_name(struct bt_plugin *plugin) |
36 | { | |
37 | const char *ret = NULL; | |
38 | ||
39 | if (!plugin) { | |
40 | goto end; | |
41 | } | |
42 | ||
43 | ret = plugin->name->str; | |
44 | end: | |
45 | return ret; | |
46 | } | |
47 | ||
48 | enum bt_plugin_status bt_plugin_set_name(struct bt_plugin *plugin, | |
49 | const char *name) | |
50 | { | |
51 | enum bt_plugin_status ret = BT_PLUGIN_STATUS_OK; | |
52 | ||
53 | if (!plugin || !name || name[0] == '\0') { | |
54 | ret = BT_PLUGIN_STATUS_INVAL; | |
55 | goto end; | |
56 | } | |
57 | ||
58 | g_string_assign(plugin->name, name); | |
59 | end: | |
60 | return ret; | |
61 | } | |
62 | ||
63 | enum bt_plugin_type bt_plugin_get_type(struct bt_plugin *plugin) | |
64 | { | |
65 | enum bt_plugin_type type = BT_PLUGIN_TYPE_UNKNOWN; | |
66 | ||
67 | if (!plugin) { | |
68 | goto end; | |
69 | } | |
70 | ||
71 | type = plugin->type; | |
72 | end: | |
73 | return type; | |
74 | } | |
75 | ||
76 | enum bt_plugin_status bt_plugin_set_error_stream( | |
77 | struct bt_plugin *plugin, FILE *stream) | |
78 | { | |
79 | enum bt_plugin_status ret = BT_PLUGIN_STATUS_OK; | |
80 | ||
81 | if (!plugin) { | |
82 | ret = BT_PLUGIN_STATUS_INVAL; | |
83 | goto end; | |
84 | } | |
85 | ||
86 | plugin->error_stream = stream; | |
87 | end: | |
88 | return ret; | |
89 | } | |
90 | ||
91 | void bt_plugin_get(struct bt_plugin *plugin) | |
92 | { | |
93 | if (!plugin) { | |
94 | return; | |
95 | } | |
96 | ||
97 | bt_ctf_ref_get(&plugin->ref_count); | |
98 | } | |
99 | ||
100 | void bt_plugin_put(struct bt_plugin *plugin) | |
101 | { | |
102 | if (!plugin) { | |
103 | return; | |
104 | } | |
105 | ||
0777b693 JG |
106 | bt_ctf_ref_put(&plugin->ref_count, bt_plugin_destroy); |
107 | } | |
108 | ||
109 | BT_HIDDEN | |
110 | enum bt_plugin_status bt_plugin_init(struct bt_plugin *plugin, const char *name, | |
2bd8a567 | 111 | void *user_data, bt_plugin_destroy_cb user_destroy_func, |
0777b693 | 112 | enum bt_plugin_type plugin_type, |
2bd8a567 | 113 | bt_plugin_destroy_cb plugin_destroy) |
0777b693 JG |
114 | { |
115 | enum bt_plugin_status ret = BT_PLUGIN_STATUS_OK; | |
116 | ||
117 | if (!plugin || !name || name[0] == '\0' || | |
2bd8a567 | 118 | !user_destroy_func || !user_data || !plugin_destroy) { |
0777b693 JG |
119 | ret = BT_PLUGIN_STATUS_INVAL; |
120 | goto end; | |
121 | } | |
122 | ||
123 | bt_ctf_ref_init(&plugin->ref_count); | |
124 | plugin->type = plugin_type; | |
125 | plugin->user_data = user_data; | |
126 | plugin->user_data_destroy = user_destroy_func; | |
127 | plugin->destroy = plugin_destroy; | |
128 | ||
129 | plugin->name = g_string_new(name); | |
130 | if (!plugin->name) { | |
131 | ret = BT_PLUGIN_STATUS_NOMEM; | |
132 | goto end; | |
133 | } | |
134 | end: | |
135 | return ret; | |
136 | } | |
137 | ||
138 | static | |
139 | void bt_plugin_destroy(struct bt_ctf_ref *ref) | |
140 | { | |
2bd8a567 | 141 | struct bt_plugin *plugin = NULL; |
0777b693 JG |
142 | |
143 | if (!ref) { | |
144 | return; | |
145 | } | |
146 | ||
2bd8a567 | 147 | plugin = container_of(ref, struct bt_plugin, ref_count); |
0777b693 JG |
148 | |
149 | /** | |
150 | * Destroy user data, base and source/filter/sink last since | |
151 | * it will deallocate the plugin. | |
152 | */ | |
2bd8a567 JG |
153 | assert(plugin->user_data_destroy); |
154 | plugin->user_data_destroy(plugin->user_data); | |
0777b693 JG |
155 | |
156 | g_string_free(plugin->name, TRUE); | |
157 | ||
158 | assert(plugin->destroy); | |
159 | plugin->destroy(plugin); | |
4a25879c | 160 | } |