Mercurial > sdl-ios-xcode
annotate src/SDL_loadso.c @ 582:16cc97387d52
Worked around objective C brokenness in Cygwin's automake
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sat, 01 Feb 2003 18:58:42 +0000 |
parents | 745873ea091f |
children | 35ff0890ac4e |
rev | line source |
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1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
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4 |
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5 This library is free software; you can redistribute it and/or |
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6 modify it under the terms of the GNU Library General Public |
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7 License as published by the Free Software Foundation; either |
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8 version 2 of the License, or (at your option) any later version. |
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9 |
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10 This library is distributed in the hope that it will be useful, |
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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13 Library General Public License for more details. |
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14 |
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15 You should have received a copy of the GNU Library General Public |
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16 License along with this library; if not, write to the Free |
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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18 |
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19 Sam Lantinga |
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20 slouken@libsdl.org |
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21 */ |
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22 |
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23 #ifdef SAVE_RCSID |
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24 static char rcsid = |
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25 "@(#) $Id$"; |
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26 #endif |
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27 |
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28 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ |
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29 /* System dependent library loading routines */ |
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30 |
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31 #include <stdio.h> |
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32 #if defined(USE_DLOPEN) |
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33 # include <dlfcn.h> |
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34 #elif defined(WIN32) |
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35 # include <windows.h> |
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36 #elif defined(__BEOS__) |
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37 # include <be/kernel/image.h> |
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38 #elif defined(macintosh) |
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39 # include <string.h> |
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40 # include <Strings.h> |
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41 # include <CodeFragments.h> |
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42 # include <Errors.h> |
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43 #else |
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44 /*#error Unsupported dynamic link environment*/ |
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45 #endif /* system type */ |
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46 |
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47 #include "SDL_types.h" |
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48 #include "SDL_error.h" |
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49 #include "SDL_loadso.h" |
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50 |
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51 void *SDL_LoadObject(const char *sofile) |
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52 { |
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53 void *handle = NULL; |
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54 const char *loaderror = "SDL_LoadObject() not implemented"; |
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55 #if defined(USE_DLOPEN) |
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56 /* * */ |
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57 handle = dlopen(sofile, RTLD_NOW); |
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58 loaderror = (char *)dlerror(); |
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59 #elif defined(WIN32) |
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60 /* * */ |
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61 char errbuf[512]; |
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62 |
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63 handle = (void *)LoadLibrary(sofile); |
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64 |
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65 /* Generate an error message if all loads failed */ |
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66 if ( handle == NULL ) { |
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67 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS | |
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68 FORMAT_MESSAGE_FROM_SYSTEM), |
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69 NULL, GetLastError(), |
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70 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
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71 errbuf, SDL_TABLESIZE(errbuf), NULL); |
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72 loaderror = errbuf; |
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73 } |
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74 #elif defined(__BEOS__) |
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75 /* * */ |
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76 image_id library_id; |
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77 |
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78 library_id = load_add_on(sofile); |
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79 if ( library_id == B_ERROR ) { |
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80 loaderror = "BeOS error"; |
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81 } else { |
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82 handle = (void *)(library_id); |
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83 } |
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84 #elif defined(macintosh) |
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85 /* * */ |
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86 CFragConnectionID library_id; |
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87 Ptr mainAddr; |
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88 Str255 errName; |
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89 OSErr error; |
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90 char psofile[512]; |
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91 |
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92 strncpy(psofile, sofile, SDL_TABLESIZE(psofile)); |
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93 psofile[SDL_TABLESIZE(psofile)-1] = '\0'; |
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94 error = GetSharedLibrary(C2PStr(psofile), kCompiledCFragArch, |
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95 kLoadCFrag, &library_id, &mainAddr, errName); |
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96 switch (error) { |
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97 case noErr: |
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98 break; |
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99 case cfragNoLibraryErr: |
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100 loaderror = "Library not found"; |
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101 break; |
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102 case cfragUnresolvedErr: |
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103 loaderror = "Unabled to resolve symbols"; |
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104 break; |
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105 case cfragNoPrivateMemErr: |
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106 case cfragNoClientMemErr: |
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107 loaderror = "Out of memory"; |
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108 break; |
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109 default: |
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110 loaderror = "Unknown Code Fragment Manager error"; |
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111 break; |
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112 } |
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113 if ( loaderror == NULL ) { |
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114 handle = (void *)(library_id); |
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115 } |
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116 #endif /* system type */ |
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117 |
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118 if ( handle == NULL ) { |
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119 SDL_SetError("Failed loading %s: %s", sofile, loaderror); |
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120 } |
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121 return(handle); |
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122 } |
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123 |
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124 void *SDL_LoadFunction(void *handle, const char *name) |
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125 { |
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126 void *symbol = NULL; |
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127 const char *loaderror = "SDL_LoadFunction not implemented"; |
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128 #if defined(USE_DLOPEN) |
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129 /* * */ |
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130 symbol = dlsym(handle, name); |
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131 if ( symbol == NULL ) { |
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132 loaderror = (char *)dlerror(); |
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133 } |
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134 #elif defined(WIN32) |
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135 /* * */ |
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136 char errbuf[512]; |
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137 |
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138 symbol = (void *)GetProcAddress((HMODULE)handle, name); |
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139 if ( symbol == NULL ) { |
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140 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS | |
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141 FORMAT_MESSAGE_FROM_SYSTEM), |
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142 NULL, GetLastError(), |
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143 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
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144 errbuf, SDL_TABLESIZE(errbuf), NULL); |
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145 loaderror = errbuf; |
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146 } |
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147 #elif defined(__BEOS__) |
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148 /* * */ |
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149 image_id library_id = (image_id)handle; |
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150 if ( get_image_symbol(library_id, |
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151 name, B_SYMBOL_TYPE_TEXT, &symbol) != B_NO_ERROR ) { |
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152 loaderror = "Symbol not found"; |
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153 } |
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154 #elif defined(macintosh) |
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155 /* * */ |
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156 CFragSymbolClass class; |
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157 CFragConnectionID library_id = (CFragConnectionID)handle; |
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158 char pname[512]; |
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159 |
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160 strncpy(pname, name, SDL_TABLESIZE(pname)); |
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161 pname[SDL_TABLESIZE(pname)-1] = '\0'; |
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162 if ( FindSymbol(library_id, C2PStr(pname), |
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163 (char **)&symbol, &class) != noErr ) { |
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164 loaderror = "Symbol not found"; |
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165 } |
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166 #endif /* system type */ |
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167 |
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168 if ( symbol == NULL ) { |
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169 SDL_SetError("Failed loading %s: %s", name, loaderror); |
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170 } |
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171 return(symbol); |
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172 } |
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173 |
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174 void SDL_UnloadObject(void *handle) |
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175 { |
336
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176 #if defined(__BEOS__) |
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177 image_id library_id; |
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178 #endif |
294
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179 if ( handle == NULL ) { |
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180 return; |
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181 } |
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182 #if defined(USE_DLOPEN) |
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183 /* * */ |
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184 dlclose(handle); |
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185 #elif defined(WIN32) |
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186 /* * */ |
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187 FreeLibrary((HMODULE)handle); |
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188 #elif defined(__BEOS__) |
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189 /* * */ |
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190 library_id = (image_id)handle; |
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191 unload_add_on(library_id); |
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192 #elif defined(macintosh) |
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193 /* * */ |
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194 CFragConnectionID library_id = (CFragConnectionID)handle; |
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195 CloseConnection(library_id); |
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196 #endif /* system type */ |
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197 } |