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1 /**************************************************************************
2  *
3  * Copyright 2009 VMware, Inc.
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
10  * distribute, sub license, and/or sell copies of the Software, and to
11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * The above copyright notice and this permission notice (including the
23  * next paragraph) shall be included in all copies or substantial portions
24  * of the Software.
25  *
26  **************************************************************************/
27 
28 
29 #ifndef U_DL_H_
30 #define U_DL_H_
31 
32 
33 #include "pipe/p_config.h"
34 
35 #ifdef	__cplusplus
36 extern "C" {
37 #endif
38 
39 #if defined(PIPE_OS_WINDOWS)
40 #  define UTIL_DL_EXT ".dll"
41 #  define UTIL_DL_PREFIX ""
42 #elif defined(PIPE_OS_APPLE)
43 #  define UTIL_DL_EXT ".dylib"
44 #  define UTIL_DL_PREFIX "lib"
45 #else
46 #  define UTIL_DL_EXT ".so"
47 #  define UTIL_DL_PREFIX "lib"
48 #endif
49 
50 
51 struct util_dl_library;
52 
53 
54 typedef void (*util_dl_proc)(void);
55 
56 
57 /**
58  * Open a library dynamically.
59  */
60 struct util_dl_library *
61 util_dl_open(const char *filename);
62 
63 
64 /**
65  * Lookup a function in a library.
66  */
67 util_dl_proc
68 util_dl_get_proc_address(struct util_dl_library *library,
69                          const char *procname);
70 
71 
72 /**
73  * Close a library.
74  */
75 void
76 util_dl_close(struct util_dl_library *library);
77 
78 
79 /**
80  * Return most recent error message.
81  */
82 const char *
83 util_dl_error(void);
84 
85 #ifdef	__cplusplus
86 }
87 #endif
88 
89 #endif /* U_DL_H_ */
90