1/*
2 * module.h, dynamic module interface
3 *
4 * Copyright (c) 2009-2010 Wind River Systems, Inc.
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19#ifndef __MODULE_H
20#define __MODULE_H
21
22#include <dlfcn.h>
23
24#ifdef __cplusplus
25extern "C" {
26#endif
27
28struct module;
29
30typedef int (*module_init_t)(struct module *module);
31typedef void (*module_exit_t)(struct module *module);
32
33struct module {
34    char *name;
35
36    int ref_count;
37    void *handle;
38
39    module_init_t init;
40    module_exit_t exit;
41
42    void *priv;
43    struct module *next;
44};
45
46#define MODULE_LAZY RTLD_LAZY
47#define MODULE_NOW RTLD_NOW
48#define MODUEL_GLOBAL RTLD_GLOBAL
49
50struct module *module_open(const char *path, int flag);
51int module_close(struct module *module);
52void *module_symbol(struct module *module, const char *string);
53
54#ifdef __cplusplus
55} /* extern "C" */
56#endif
57
58#endif /* __MODULE_H */
59