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