6 * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
8 * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
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:
17 * The above copyright notice and this permission notice shall be included in
18 * all copies or substantial portions of the Software.
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
29 #include <babeltrace/compiler.h>
30 #include <babeltrace/ref.h>
31 #include <babeltrace/plugin/plugin-internal.h>
34 #define PLUGIN_SYMBOL_NAME "__bt_plugin_name"
35 #define PLUGIN_SYMBOL_AUTHOR "__bt_plugin_author"
36 #define PLUGIN_SYMBOL_LICENSE "__bt_plugin_license"
37 #define PLUGIN_SYMBOL_INIT "__bt_plugin_init"
38 #define PLUGIN_SYMBOL_EXIT "__bt_plugin_exit"
39 #define PLUGIN_SYMBOL_DESCRIPTION "__bt_plugin_description"
42 void bt_plugin_destroy(struct bt_object
*obj
)
44 struct bt_plugin
*plugin
;
47 plugin
= container_of(obj
, struct bt_plugin
, base
);
54 if (!g_module_close(plugin
->module
)) {
55 printf_error("Module close error: %s",
60 g_string_free(plugin
->path
, TRUE
);
65 struct bt_plugin
*bt_plugin_create(GModule
*module
, const char *path
)
67 struct bt_plugin
*plugin
= NULL
;
68 gpointer symbol
= NULL
;
70 if (!module
|| !path
) {
74 plugin
= g_new0(struct bt_plugin
, 1);
79 bt_object_init(plugin
, bt_plugin_destroy
);
80 plugin
->path
= g_string_new(path
);
85 if (!g_module_symbol(module
, PLUGIN_SYMBOL_NAME
,
86 (gpointer
*) &plugin
->name
)) {
87 printf_error("Unable to resolve plugin symbol %s from %s",
88 PLUGIN_SYMBOL_NAME
, g_module_name(module
));
92 if (!g_module_symbol(module
, PLUGIN_SYMBOL_LICENSE
,
93 (gpointer
*) &plugin
->license
)) {
94 printf_error("Unable to resolve plugin symbol %s from %s",
95 PLUGIN_SYMBOL_LICENSE
, g_module_name(module
));
98 if (!g_module_symbol(module
, PLUGIN_SYMBOL_INIT
, &symbol
)) {
99 printf_error("Unable to resolve plugin symbol %s from %s",
100 PLUGIN_SYMBOL_INIT
, g_module_name(module
));
103 plugin
->init
= *((bt_plugin_init_func
*) symbol
);
105 printf_error("NULL %s symbol target",
112 if (g_module_symbol(module
, PLUGIN_SYMBOL_EXIT
,
113 (gpointer
*) &symbol
)) {
114 plugin
->exit
= *((bt_plugin_exit_func
*) symbol
);
116 g_module_symbol(module
, PLUGIN_SYMBOL_AUTHOR
,
117 (gpointer
*) &plugin
->author
);
118 g_module_symbol(module
, PLUGIN_SYMBOL_DESCRIPTION
,
119 (gpointer
*) &plugin
->description
);
128 enum bt_component_status
bt_plugin_register_component_classes(
129 struct bt_plugin
*plugin
, struct bt_component_factory
*factory
)
131 assert(plugin
&& factory
);
132 return plugin
->init(factory
);
135 const char *bt_plugin_get_name(struct bt_plugin
*plugin
)
137 return plugin
? plugin
->name
: NULL
;
140 const char *bt_plugin_get_author(struct bt_plugin
*plugin
)
142 return plugin
? plugin
->author
: NULL
;
145 const char *bt_plugin_get_license(struct bt_plugin
*plugin
)
147 return plugin
? plugin
->license
: NULL
;
150 const char *bt_plugin_get_path(struct bt_plugin
*plugin
)
152 return plugin
? plugin
->path
->str
: NULL
;
155 const char *bt_plugin_get_description(struct bt_plugin
*plugin
)
157 return plugin
? plugin
->description
: NULL
;