|
1 /* glpenv08.c (shared library support) */ |
|
2 |
|
3 /*********************************************************************** |
|
4 * This code is part of GLPK (GNU Linear Programming Kit). |
|
5 * |
|
6 * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
|
7 * 2009, 2010 Andrew Makhorin, Department for Applied Informatics, |
|
8 * Moscow Aviation Institute, Moscow, Russia. All rights reserved. |
|
9 * E-mail: <mao@gnu.org>. |
|
10 * |
|
11 * GLPK is free software: you can redistribute it and/or modify it |
|
12 * under the terms of the GNU General Public License as published by |
|
13 * the Free Software Foundation, either version 3 of the License, or |
|
14 * (at your option) any later version. |
|
15 * |
|
16 * GLPK is distributed in the hope that it will be useful, but WITHOUT |
|
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY |
|
18 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public |
|
19 * License for more details. |
|
20 * |
|
21 * You should have received a copy of the GNU General Public License |
|
22 * along with GLPK. If not, see <http://www.gnu.org/licenses/>. |
|
23 ***********************************************************************/ |
|
24 |
|
25 #ifdef HAVE_CONFIG_H |
|
26 #include <config.h> |
|
27 #endif |
|
28 |
|
29 #include "glpenv.h" |
|
30 |
|
31 /* GNU version ********************************************************/ |
|
32 |
|
33 #if defined(HAVE_LTDL) |
|
34 |
|
35 #include <ltdl.h> |
|
36 |
|
37 void *xdlopen(const char *module) |
|
38 { void *h = NULL; |
|
39 if (lt_dlinit() != 0) |
|
40 { lib_err_msg(lt_dlerror()); |
|
41 goto done; |
|
42 } |
|
43 h = lt_dlopen(module); |
|
44 if (h == NULL) |
|
45 { lib_err_msg(lt_dlerror()); |
|
46 if (lt_dlexit() != 0) |
|
47 xerror("xdlopen: %s\n", lt_dlerror()); |
|
48 } |
|
49 done: return h; |
|
50 } |
|
51 |
|
52 void *xdlsym(void *h, const char *symbol) |
|
53 { void *ptr; |
|
54 xassert(h != NULL); |
|
55 ptr = lt_dlsym(h, symbol); |
|
56 if (ptr == NULL) |
|
57 xerror("xdlsym: %s: %s\n", symbol, lt_dlerror()); |
|
58 return ptr; |
|
59 } |
|
60 |
|
61 void xdlclose(void *h) |
|
62 { xassert(h != NULL); |
|
63 if (lt_dlclose(h) != 0) |
|
64 xerror("xdlclose: %s\n", lt_dlerror()); |
|
65 if (lt_dlexit() != 0) |
|
66 xerror("xdlclose: %s\n", lt_dlerror()); |
|
67 return; |
|
68 } |
|
69 |
|
70 /* POSIX version ******************************************************/ |
|
71 |
|
72 #elif defined(HAVE_DLFCN) |
|
73 |
|
74 #include <dlfcn.h> |
|
75 |
|
76 void *xdlopen(const char *module) |
|
77 { void *h; |
|
78 h = dlopen(module, RTLD_NOW); |
|
79 if (h == NULL) |
|
80 lib_err_msg(dlerror()); |
|
81 return h; |
|
82 } |
|
83 |
|
84 void *xdlsym(void *h, const char *symbol) |
|
85 { void *ptr; |
|
86 xassert(h != NULL); |
|
87 ptr = dlsym(h, symbol); |
|
88 if (ptr == NULL) |
|
89 xerror("xdlsym: %s: %s\n", symbol, dlerror()); |
|
90 return ptr; |
|
91 } |
|
92 |
|
93 void xdlclose(void *h) |
|
94 { xassert(h != NULL); |
|
95 if (dlclose(h) != 0) |
|
96 xerror("xdlclose: %s\n", dlerror()); |
|
97 return; |
|
98 } |
|
99 |
|
100 /* Windows version ****************************************************/ |
|
101 |
|
102 #elif defined(__WOE__) |
|
103 |
|
104 #include <windows.h> |
|
105 |
|
106 void *xdlopen(const char *module) |
|
107 { void *h; |
|
108 h = LoadLibrary(module); |
|
109 if (h == NULL) |
|
110 { char msg[20]; |
|
111 sprintf(msg, "Error %d", GetLastError()); |
|
112 lib_err_msg(msg); |
|
113 } |
|
114 return h; |
|
115 } |
|
116 |
|
117 void *xdlsym(void *h, const char *symbol) |
|
118 { void *ptr; |
|
119 xassert(h != NULL); |
|
120 ptr = GetProcAddress(h, symbol); |
|
121 if (ptr == NULL) |
|
122 xerror("xdlsym: %s: Error %d\n", symbol, GetLastError()); |
|
123 return ptr; |
|
124 } |
|
125 |
|
126 void xdlclose(void *h) |
|
127 { xassert(h != NULL); |
|
128 if (!FreeLibrary(h)) |
|
129 xerror("xdlclose: Error %d\n", GetLastError()); |
|
130 return; |
|
131 } |
|
132 |
|
133 /* NULL version *******************************************************/ |
|
134 |
|
135 #else |
|
136 |
|
137 void *xdlopen(const char *module) |
|
138 { xassert(module == module); |
|
139 lib_err_msg("Shared libraries not supported"); |
|
140 return NULL; |
|
141 } |
|
142 |
|
143 void *xdlsym(void *h, const char *symbol) |
|
144 { xassert(h != h); |
|
145 xassert(symbol != symbol); |
|
146 return NULL; |
|
147 } |
|
148 |
|
149 void xdlclose(void *h) |
|
150 { xassert(h != h); |
|
151 return; |
|
152 } |
|
153 |
|
154 #endif |
|
155 |
|
156 /* eof */ |