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annotate src/loadso/win32/SDL_sysloadso.c @ 1861:b42823412c3b

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Fixed bug #232 ------- Comment #2 From Matthias Geissert 2006-05-24 07:54 [reply] ------- See http://dri.sourceforge.net/doc/DRIuserguide.html, section 11.5. There is written that you need to use RTLD_GLOBAL, since, otherwise, nested open of dynamic libraries doesn't work. However, This is necassary in this case, since libGL opens the hardware-specific driver/library. I hope this helps you.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 20 Jun 2006 03:52:41 +0000
parents 92947e3a18db
children 782fd950bd46 c121d94672cb a1b03ba2fcd0
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #include "SDL_config.h"
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23
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92947e3a18db Make sure code is only compiled if the appropriate subsystem is enabled
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24 #ifdef SDL_LOADSO_WIN32
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25
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26 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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27 /* System dependent library loading routines */
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28
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29 #define WIN32_LEAN_AND_MEAN
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30 #include <windows.h>
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31
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32 #include "SDL_loadso.h"
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33
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34 void *SDL_LoadObject(const char *sofile)
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35 {
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36 void *handle = NULL;
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37 const char *loaderror = "Unknown error";
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38
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39 #if defined(_WIN32_WCE)
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40 char errbuf[512];
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41
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42 wchar_t *errbuf_t = SDL_malloc(512 * sizeof(wchar_t));
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43 wchar_t *sofile_t = SDL_malloc((MAX_PATH+1) * sizeof(wchar_t));
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44
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45 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, sofile, -1, sofile_t, MAX_PATH);
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46 handle = (void *)LoadLibrary(sofile_t);
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47
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48 /* Generate an error message if all loads failed */
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49 if ( handle == NULL ) {
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50 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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51 FORMAT_MESSAGE_FROM_SYSTEM),
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52 NULL, GetLastError(),
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53 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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54 errbuf_t, SDL_arraysize(errbuf), NULL);
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55 WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
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56 loaderror = errbuf;
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57 }
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58
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59 SDL_free(sofile_t);
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60 SDL_free(errbuf_t);
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61
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62 #else /*if defined(__WIN32__)*/
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63 char errbuf[512];
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64
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65 handle = (void *)LoadLibrary(sofile);
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66
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67 /* Generate an error message if all loads failed */
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68 if ( handle == NULL ) {
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69 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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70 FORMAT_MESSAGE_FROM_SYSTEM),
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71 NULL, GetLastError(),
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72 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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73 errbuf, SDL_arraysize(errbuf), NULL);
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74 loaderror = errbuf;
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75 }
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76 #endif
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77
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78 if ( handle == NULL ) {
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79 SDL_SetError("Failed loading %s: %s", sofile, loaderror);
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80 }
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81 return(handle);
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82 }
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83
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84 void *SDL_LoadFunction(void *handle, const char *name)
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85 {
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86 void *symbol = NULL;
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87 const char *loaderror = "Unknown error";
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88
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89 #if defined(_WIN32_WCE)
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90 char errbuf[512];
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91 int length = SDL_strlen(name);
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92
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93 wchar_t *name_t = SDL_malloc((length + 1) * sizeof(wchar_t));
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94 wchar_t *errbuf_t = SDL_malloc(512 * sizeof(wchar_t));
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95
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96 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, -1, name_t, length);
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97
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98 symbol = (void *)GetProcAddress((HMODULE)handle, name_t);
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99 if ( symbol == NULL ) {
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100 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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101 FORMAT_MESSAGE_FROM_SYSTEM),
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102 NULL, GetLastError(),
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103 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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104 errbuf_t, SDL_arraysize(errbuf), NULL);
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105 WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
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106 loaderror = errbuf;
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107 }
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108
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109 SDL_free(name_t);
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110 SDL_free(errbuf_t);
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111
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112 #else /*if defined(WIN32)*/
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113 char errbuf[512];
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114
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115 symbol = (void *)GetProcAddress((HMODULE)handle, name);
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116 if ( symbol == NULL ) {
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117 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
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118 FORMAT_MESSAGE_FROM_SYSTEM),
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119 NULL, GetLastError(),
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120 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
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121 errbuf, SDL_arraysize(errbuf), NULL);
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122 loaderror = errbuf;
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123 }
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124 #endif
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125
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126 if ( symbol == NULL ) {
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127 SDL_SetError("Failed loading %s: %s", name, loaderror);
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128 }
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129 return(symbol);
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130 }
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131
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132 void SDL_UnloadObject(void *handle)
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133 {
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134 if ( handle != NULL ) {
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135 FreeLibrary((HMODULE)handle);
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136 }
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137 }
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138
1635
92947e3a18db Make sure code is only compiled if the appropriate subsystem is enabled
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139 #endif /* SDL_LOADSO_WIN32 */