6 * Copyright 2015 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
);
50 if (!g_module_close(plugin
->module
)) {
51 printf_error("Module close error: %s",
59 g_string_free(plugin
->path
, TRUE
);
64 struct bt_plugin
*bt_plugin_create(GModule
*module
, const char *path
)
66 struct bt_plugin
*plugin
= NULL
;
67 gpointer symbol
= NULL
;
69 if (!module
|| !path
) {
73 plugin
= g_new0(struct bt_plugin
, 1);
78 bt_object_init(plugin
, bt_plugin_destroy
);
79 plugin
->path
= g_string_new(path
);
84 if (!g_module_symbol(module
, PLUGIN_SYMBOL_NAME
,
85 (gpointer
*) &plugin
->name
)) {
86 printf_error("Unable to resolve plugin symbol %s from %s",
87 PLUGIN_SYMBOL_NAME
, g_module_name(module
));
91 if (!g_module_symbol(module
, PLUGIN_SYMBOL_LICENSE
,
92 (gpointer
*) &plugin
->license
)) {
93 printf_error("Unable to resolve plugin symbol %s from %s",
94 PLUGIN_SYMBOL_LICENSE
, g_module_name(module
));
97 if (!g_module_symbol(module
, PLUGIN_SYMBOL_INIT
, &symbol
)) {
98 printf_error("Unable to resolve plugin symbol %s from %s",
99 PLUGIN_SYMBOL_INIT
, g_module_name(module
));
102 plugin
->init
= *((bt_plugin_init_func
*) symbol
);
104 printf_error("NULL %s symbol target",
111 if (g_module_symbol(module
, PLUGIN_SYMBOL_EXIT
,
112 (gpointer
*) &symbol
)) {
113 plugin
->exit
= *((bt_plugin_exit_func
*) symbol
);
115 g_module_symbol(module
, PLUGIN_SYMBOL_AUTHOR
,
116 (gpointer
*) &plugin
->author
);
117 g_module_symbol(module
, PLUGIN_SYMBOL_DESCRIPTION
,
118 (gpointer
*) &plugin
->description
);
127 enum bt_component_status
bt_plugin_register_component_classes(
128 struct bt_plugin
*plugin
, struct bt_component_factory
*factory
)
130 assert(plugin
&& factory
);
131 return plugin
->init(factory
);
134 const char *bt_plugin_get_name(struct bt_plugin
*plugin
)
136 return plugin
? plugin
->name
: NULL
;
139 const char *bt_plugin_get_author(struct bt_plugin
*plugin
)
141 return plugin
? plugin
->author
: NULL
;
144 const char *bt_plugin_get_license(struct bt_plugin
*plugin
)
146 return plugin
? plugin
->license
: NULL
;
149 const char *bt_plugin_get_path(struct bt_plugin
*plugin
)
151 return plugin
? plugin
->path
->str
: NULL
;
154 const char *bt_plugin_get_description(struct bt_plugin
*plugin
)
156 return plugin
? plugin
->description
: NULL
;