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annotate dwt/dwthelper/Loader.d @ 238:380bad9f6852

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reverted char[] to String
author Frank Benoit <benoit@tionex.de>
date Mon, 05 May 2008 00:42:55 +0200
parents 384b3a0c9cd7
children
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1 /*****************************************************************************
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2
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3 license:
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4
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5 version:
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6
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7 Dynamic loader for gtk symbol names
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8
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9 History: 2004-12-11 initial version by John Reimer
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10 2005-02-21 class and symbol names change; versioning modification
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11 2005-05-05 linux fixes
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12 2007-12-23 source cleanup
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13 2007-12-30 merge Paths.d into Loader.d
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14 2008-01-05 Tango only version using tango.sys.SharedLib
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15
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16 Note: Design inspired by Kris Bell's ICU.d, the dynamic loader from
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17 an early version of mango
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18
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19 ******************************************************************************/
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20
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21 module dwt.dwthelper.Loader;
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22
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23 import dwt.dwthelper.utils;
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24
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25 private import tango.io.Stdout,
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26 tango.sys.SharedLib;
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27
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28 /*****************************************************************************
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29
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30 *****************************************************************************/
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31
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32 enum LIBRARY
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33 {
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34 ATK,
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35 CAIRO,
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36 GDK,
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37 GDKPIXBUF,
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38 GLIB,
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39 GMODULE,
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40 GOBJECT,
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41 GTHREAD,
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42 GTK,
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43 PANGO,
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44 GLGDK,
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45 GLGTK,
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46 GL,
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47 GLU,
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48 GLEXT,
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49 GDA,
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50 GLADE,
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51 GSV,
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52 GSTREAMER,
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53 GSTINTERFACES
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54 }
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55
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56 /*****************************************************************************
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57
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58 *****************************************************************************/
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59
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60 version (Windows)
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61 {
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62 const String[LIBRARY.max+1] importLibs = [
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63 LIBRARY.ATK: "libatk-1.0-0.dll",
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64 LIBRARY.CAIRO: "libcairo-2.dll",
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65 LIBRARY.GDK: "libgdk-win32-2.0-0.dll",
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66 LIBRARY.GDKPIXBUF: "libgdk_pixbuf-2.0-0.dll",
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67 LIBRARY.GLIB: "libglib-2.0-0.dll",
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68 LIBRARY.GMODULE: "libgmodule-2.0-0.dll",
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69 LIBRARY.GOBJECT: "libgobject-2.0-0.dll",
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70 LIBRARY.GTHREAD: "libgthread-2.0-0.dll",
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71 LIBRARY.GTK: "libgtk-win32-2.0-0.dll",
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72 LIBRARY.PANGO: "libpango-1.0-0.dll",
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73 LIBRARY.GLGDK: "libgdkglext-win32-1.0-0.dll",
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74 LIBRARY.GLGTK: "libgtkglext-win32-1.0-0.dll",
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75 LIBRARY.GL: "opengl32.dll",
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76 LIBRARY.GLU: "glu32.dll",
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77 LIBRARY.GDA: "libgda-2.dll",
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78 LIBRARY.GLADE: "libglade-2.0.dll",
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79 LIBRARY.GSV: "libgtksourceview-1.0-0.dll",
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80 LIBRARY.GSTREAMER: "libgstreamer-0.10.dll",
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81 LIBRARY.GSTINTERFACES: "libgstinterfaces-0.10.dll"
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82 ];
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83 }
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84
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85 /*****************************************************************************
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86
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87 *****************************************************************************/
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88
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89 version(linux)
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90 {
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91 const String[LIBRARY.max+1] importLibs = [
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92 LIBRARY.ATK: "libatk-1.0.so",
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93 LIBRARY.CAIRO: "libcairo.so.2",
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94 LIBRARY.GDK: "libgdk-x11-2.0.so",
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95 LIBRARY.GDKPIXBUF: "libgdk_pixbuf-2.0.so",
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96 LIBRARY.GLIB: "libglib-2.0.so",
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97 LIBRARY.GMODULE: "libgmodule-2.0.so",
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98 LIBRARY.GOBJECT: "libgobject-2.0.so",
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99 LIBRARY.GTHREAD: "libgthread-2.0.so",
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100 LIBRARY.GTK: "libgtk-x11-2.0.so",
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101 LIBRARY.PANGO: "libpango-1.0.so",
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102 LIBRARY.GLGDK: "libgdkglext-x11-1.0.so",
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103 LIBRARY.GLGTK: "libgtkglext-x11-1.0.so",
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104 LIBRARY.GL: "libGL.so",
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105 LIBRARY.GLU: "libGLU.so",
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106 LIBRARY.GLEXT: "libGL.so",
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107 LIBRARY.GDA: "libgda-2.so.3",
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108 LIBRARY.GLADE: "libglade-2.0.so",
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109 LIBRARY.GSV: "libgtksourceview-1.0.so",
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110 LIBRARY.GSTREAMER: "libgstreamer-0.10.so",
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111 LIBRARY.GSTINTERFACES: "libgstinterfaces-0.10.so"
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112 ];
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113 }
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114
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115 /*****************************************************************************
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116
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117 getLibraryPath -- place holder for future expansion
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118
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119 ******************************************************************************/
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120
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121
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122 version(Windows)
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123 {
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124 String getLibraryPath()
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125 {
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126 return "\\Program Files\\GTK2-Runtime\\lib\\";
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127 }
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128 }
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129
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130 /*****************************************************************************
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131
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132 getLibraryPath is empty for linux because default path is known by ld
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133
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134 ******************************************************************************/
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135
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136 version(linux)
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137 {
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138 String getLibraryPath() { return ""; }
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139 }
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140
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141 /*****************************************************************************
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142
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143 ProcLink is used to record the library, function, and function name
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144 that will be loaded by the dynamic loader.
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145
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146 ******************************************************************************/
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147
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148 public struct Symbol
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149 {
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150 String name;
174
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151 void** pointer;
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152 }
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153
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154 /*****************************************************************************
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155
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156 The Linker class: handles loading of the library and exported functions
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157
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158 ******************************************************************************/
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159
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160 public class Linker
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161 {
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162 static String[][String] loadFailures;
174
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163
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164 /*************************************************************************
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165
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166 Gets all the failed loads for a specific library. This is filled in
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167 only if the default onFailure method is used during load.
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168
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169 returns: an array of the names that failed to load for a specific
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170 library or null if none was found.
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171
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172 **************************************************************************/
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173
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174 public static String[] getLoadFailures(String libName)
174
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175 {
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176 if ( libName in loadFailures )
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177 {
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178 return loadFailures[libName];
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179 }
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180 else
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181 {
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182 return null;
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183 }
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184 }
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185
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186 /*************************************************************************
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187
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188 Loads all libraries. This is filled in only if the default onFailure
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189 method is used during load.
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190
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191 returns: an array of the library names.
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192
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193 **************************************************************************/
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194
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195 public static String[] getLoadLibraries()
174
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196 {
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197 return loadFailures.keys;
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198 }
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199
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200 /*************************************************************************
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201
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202 isPerfectLoad -- Checks if any symbol failed to load.
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203 Returns: true if ALL symbols loaded.
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204
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205 **************************************************************************/
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206
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207 public static bool isPerfectLoad()
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208 {
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209 return loadFailures.keys.length == 0;
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210 }
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211
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212 /*************************************************************************
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213
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214 **************************************************************************/
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215
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216 public static void dumpFailedLoads()
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217 {
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218 foreach ( String lib ; Linker.getLoadLibraries() )
174
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219 {
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220 foreach ( String symbol ; Linker.getLoadFailures(lib) )
174
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221 {
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222 version(Tango)
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223 Stdout.formatln("failed ({}) {}", lib, symbol).newline;
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224 }
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225 }
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226 }
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227
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228 /*************************************************************************
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229
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230 **************************************************************************/
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231
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232 private SharedLib primaryLib;
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233 private SharedLib alternateLib;
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234
238
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235 private String libraryName;
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236 private String alternateLibraryName;
174
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237
238
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238 alias void function( String libraryName, String symbolName, String message=null) FailureCallback;
174
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239
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240 private FailureCallback onLoadFailure;
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241
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242 /*************************************************************************
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243
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244 **************************************************************************/
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245
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246 this( String libraryName, String alternateLibraryName=null )
174
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247 {
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248 this(libraryName, alternateLibraryName, &(Linker.defaultFail));
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249 }
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250
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251 /*************************************************************************
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252
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253 **************************************************************************/
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254
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255 this (String libraryName, String alternateLibraryName, FailureCallback fn )
174
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256 {
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257 this.libraryName = libraryName;
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258 this.alternateLibraryName = alternateLibraryName;
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259 onLoadFailure = fn;
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260
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261 SharedLib.throwExceptions = false;
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262
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263 primaryLib = SharedLib.load( this.libraryName );
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264
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265 version(linux)
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266 {
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267 if (this.primaryLib is null)
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268 primaryLib = SharedLib.load( this.libraryName ~ ".0\0" );
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269 }
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270
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271 if ( alternateLibraryName !is null )
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272 {
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273 alternateLib = SharedLib.load( this.alternateLibraryName );
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274 }
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275
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276 if (primaryLib is null)
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277 {
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278 throw new Exception("Library load failed: " ~ libraryName);
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279 }
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280 }
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281
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282 /*************************************************************************
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283
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284 Default load failure callback. Logs the symbols that failed to load.
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285
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286 **************************************************************************/
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287
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288 static void defaultFail( String libraryName, String symbolName, String message=null )
174
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289 {
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290 if ( !(libraryName in loadFailures) )
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291 {
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292 String[] cc;
174
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293 loadFailures[libraryName] = cc;
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294 }
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295
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296 loadFailures[libraryName] ~= symbolName.dup;
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297 }
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298
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299 /*************************************************************************
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300
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301 Loads all the symbols for this library.
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302
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303 **************************************************************************/
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304
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305 void link( inout Symbol[] symbols )
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306 {
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307 foreach( Symbol link; symbols )
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308 {
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309 *link.pointer = primaryLib.getSymbol ( (link.name~"\0").ptr);
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310
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311 if (*link.pointer is null)
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312 {
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313 if ( alternateLib !is null )
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314 {
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315 *link.pointer = alternateLib.getSymbol( (link.name~"\0").ptr);
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316 Stdout("Loader.Linker.link trying alternate lib: ", link.name).newline;
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317 }
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318 if (*link.pointer is null)
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319 {
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320 onLoadFailure( libraryName, link.name );
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321 }
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322 }
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323 }
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324 }
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325
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326 }