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