u_dl.c revision cdc920a0 
1/**************************************************************************
2 *
3 * Copyright 2009 VMware, Inc.
4 * Copyright 1999-2008  Brian Paul
5 * All Rights Reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the
9 * "Software"), to deal in the Software without restriction, including
10 * without limitation the rights to use, copy, modify, merge, publish,
11 * distribute, sub license, and/or sell copies of the Software, and to
12 * permit persons to whom the Software is furnished to do so, subject to
13 * the following conditions:
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * The above copyright notice and this permission notice (including the
24 * next paragraph) shall be included in all copies or substantial portions
25 * of the Software.
26 *
27 **************************************************************************/
28
29
30#include "pipe/p_config.h"
31#include "pipe/p_compiler.h"
32
33#if defined(PIPE_OS_UNIX)
34#include <dlfcn.h>
35#endif
36#if defined(PIPE_OS_WINDOWS)
37#include <windows.h>
38#endif
39
40#include "u_dl.h"
41
42
43struct util_dl_library *
44util_dl_open(const char *filename)
45{
46#if defined(PIPE_OS_UNIX)
47   return (struct util_dl_library *)dlopen(filename, RTLD_LAZY | RTLD_GLOBAL);
48#elif defined(PIPE_OS_WINDOWS)
49   return (struct util_dl_library *)LoadLibraryA(filename);
50#else
51   return NULL;
52#endif
53}
54
55
56util_dl_proc
57util_dl_get_proc_address(struct util_dl_library *library,
58                         const char *procname)
59{
60#if defined(PIPE_OS_UNIX)
61   return (util_dl_proc)dlsym((void *)library, procname);
62#elif defined(PIPE_OS_WINDOWS)
63   return (util_dl_proc)GetProcAddress((HMODULE)library, procname);
64#else
65   return (util_dl_proc)NULL;
66#endif
67}
68
69
70void
71util_dl_close(struct util_dl_library *library)
72{
73#if defined(PIPE_OS_UNIX)
74   dlclose((void *)library);
75#elif defined(PIPE_OS_WINDOWS)
76   FreeLibrary((HMODULE)library);
77#else
78   (void)library;
79#endif
80}
81