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1 /* |
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2 |
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3 Copyright (C) 1999 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #if defined (HAVE_SHL_LOAD_API) |
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29 #include <cerrno> |
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30 #include <cstring> |
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31 #endif |
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32 |
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33 #if defined (HAVE_DYLD_API) |
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34 #include <mach-o/dyld.h> |
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35 #endif |
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36 |
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37 extern "C" |
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38 { |
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39 #if defined (HAVE_DLOPEN_API) |
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40 #if defined (HAVE_DLFCN_H) |
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41 #include <dlfcn.h> |
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42 #else |
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43 extern void *dlopen (const char *, int); |
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44 extern const char *dlerror (void); |
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45 extern void *dlsym (void *, const char *); |
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46 extern int dlclose (void *); |
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47 #endif |
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48 #elif defined (HAVE_SHL_LOAD_API) |
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49 #include <dl.h> |
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50 #elif defined (HAVE_LOADLIBRARY_API) |
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51 #include <windows.h> |
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52 #endif |
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53 } |
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54 |
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55 #include "file-stat.h" |
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56 #include "lo-error.h" |
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57 #include "oct-shlib.h" |
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58 #include "str-vec.h" |
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59 |
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60 class |
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61 octave_base_shlib : public octave_shlib |
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62 { |
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63 public: |
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64 |
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65 octave_base_shlib (void) |
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66 : octave_shlib (octave_xshlib ()), file (), fcn_names (), |
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67 tm_loaded (static_cast<time_t> (0)) |
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68 { count = 1; } |
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69 |
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70 octave_base_shlib (const std::string& f) |
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71 : octave_shlib (octave_xshlib ()), file (f), fcn_names (), |
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72 tm_loaded (static_cast<time_t> (0)) |
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73 { count = 1; } |
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74 |
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75 ~octave_base_shlib (void) { } |
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76 |
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77 void open (const std::string&, bool = false) { } |
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78 |
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79 void *search (const std::string&, name_mangler = 0) { return 0; } |
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80 |
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81 void close (octave_shlib::close_hook = 0) { } |
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82 |
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83 bool remove (const std::string& fcn_name); |
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84 |
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85 bool is_open (void) const { return false; } |
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86 |
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87 bool is_out_of_date (void) const; |
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88 |
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89 int number_of_functions_loaded (void) const { return fcn_names.length (); } |
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90 |
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91 std::string file_name (void) const { return file; } |
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92 |
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93 octave_time time_loaded (void) const { return tm_loaded; } |
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94 |
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95 protected: |
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96 |
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97 std::string file; |
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98 |
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99 string_vector fcn_names; |
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100 |
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101 octave_time tm_loaded; |
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102 |
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103 void stamp_time (bool warn_future = false); |
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104 |
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105 void add_to_fcn_names (const std::string& name); |
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106 |
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107 void do_close_hook (octave_shlib::close_hook = 0); |
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108 |
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109 void tabula_rasa (void); |
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110 |
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111 // No copying! |
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112 |
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113 octave_base_shlib (const octave_base_shlib&); |
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114 |
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115 octave_base_shlib& operator = (const octave_base_shlib&); |
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116 }; |
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117 |
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118 bool |
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119 octave_base_shlib::remove (const std::string& fcn_name) |
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120 { |
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121 bool retval = false; |
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122 |
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123 int n = number_of_functions_loaded (); |
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124 |
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125 string_vector new_fcn_names (n); |
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126 |
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127 int k = 0; |
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128 |
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129 for (int i = 0; i < n; i++) |
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130 { |
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131 if (fcn_names(i) == fcn_name) |
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132 retval = true; |
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133 else |
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134 new_fcn_names(k++) = fcn_names(i); |
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135 } |
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136 |
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137 new_fcn_names.resize (k); |
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138 |
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139 fcn_names = new_fcn_names; |
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140 |
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141 return retval; |
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142 } |
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143 |
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144 bool |
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145 octave_base_shlib::is_out_of_date (void) const |
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146 { |
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147 file_stat fs (file); |
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148 |
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149 return fs.is_newer (tm_loaded); |
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150 } |
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151 |
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152 void |
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153 octave_base_shlib::stamp_time (bool warn_future) |
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154 { |
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155 tm_loaded.stamp (); |
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156 |
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157 if (warn_future) |
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158 { |
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159 file_stat fs (file); |
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160 |
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161 if (fs.is_newer (tm_loaded)) |
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162 (*current_liboctave_warning_handler) |
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163 ("timestamp on file %s is in the future", file.c_str ()); |
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164 } |
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165 } |
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166 |
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167 void |
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168 octave_base_shlib::add_to_fcn_names (const std::string& name) |
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169 { |
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170 int n = number_of_functions_loaded (); |
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171 |
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172 for (int i = 0; i < n; i++) |
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173 if (fcn_names(i) == name) |
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174 return; |
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175 |
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176 fcn_names.resize (n+1); |
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177 |
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178 fcn_names(n) = name; |
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179 } |
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180 |
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181 void |
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182 octave_base_shlib::do_close_hook (octave_shlib::close_hook cl_hook) |
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183 { |
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184 int n = number_of_functions_loaded (); |
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185 |
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186 for (int i = 0; i < n; i++) |
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187 cl_hook (fcn_names(i)); |
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188 } |
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189 |
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190 void |
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191 octave_base_shlib::tabula_rasa (void) |
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192 { |
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193 file = ""; |
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194 |
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195 fcn_names.resize (0); |
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196 |
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197 tm_loaded = static_cast<time_t> (0); |
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198 } |
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199 |
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200 #if defined (HAVE_DLOPEN_API) |
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201 |
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202 class |
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203 octave_dlopen_shlib : public octave_base_shlib |
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204 { |
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205 public: |
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206 |
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207 octave_dlopen_shlib (void); |
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208 |
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209 ~octave_dlopen_shlib (void); |
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210 |
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211 void open (const std::string& f, bool warn_future = false); |
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212 |
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213 void *search (const std::string& name, name_mangler mangler = 0); |
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214 |
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215 void close (octave_shlib::close_hook cl_hook = 0); |
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216 |
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217 bool is_open (void) const { return (library != 0); } |
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218 |
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219 private: |
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220 |
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221 // No copying! |
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222 |
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223 octave_dlopen_shlib (const octave_dlopen_shlib&); |
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224 |
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225 octave_dlopen_shlib& operator = (const octave_dlopen_shlib&); |
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226 |
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227 void *library; |
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228 }; |
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229 |
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230 octave_dlopen_shlib::octave_dlopen_shlib (void) |
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231 : octave_base_shlib (), library (0) |
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232 { |
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233 } |
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234 |
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235 octave_dlopen_shlib::~octave_dlopen_shlib (void) |
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236 { |
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237 close (); |
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238 } |
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239 |
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240 void |
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241 octave_dlopen_shlib::open (const std::string& f, bool warn_future) |
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242 { |
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243 if (! is_open ()) |
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244 { |
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245 file = f; |
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246 |
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247 int flags = 0; |
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248 |
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249 #if defined (RTLD_LAZY) |
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250 flags |= RTLD_LAZY; |
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251 #endif |
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252 |
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253 #if defined (RTLD_GLOBAL) |
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254 flags |= RTLD_GLOBAL; |
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255 #endif |
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256 |
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257 library = dlopen (file.c_str (), flags); |
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258 |
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259 if (library) |
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260 stamp_time (warn_future); |
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261 else |
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262 { |
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263 const char *msg = dlerror (); |
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264 |
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265 if (msg) |
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266 (*current_liboctave_error_handler) ("%s", msg); |
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267 } |
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268 } |
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269 else |
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270 (*current_liboctave_error_handler) |
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271 ("shared library %s is already open", file.c_str ()); |
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272 } |
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273 |
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274 void * |
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275 octave_dlopen_shlib::search (const std::string& name, |
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276 octave_shlib::name_mangler mangler) |
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277 { |
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278 void *function = 0; |
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279 |
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280 if (is_open ()) |
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281 { |
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282 std::string sym_name = name; |
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283 |
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284 if (mangler) |
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285 sym_name = mangler (name); |
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286 |
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287 function = dlsym (library, sym_name.c_str ()); |
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288 |
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289 if (function) |
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290 add_to_fcn_names (name); |
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291 } |
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292 else |
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293 (*current_liboctave_error_handler) |
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294 ("shared library %s is not open", file.c_str ()); |
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295 |
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296 return function; |
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297 } |
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298 |
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299 void |
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300 octave_dlopen_shlib::close (octave_shlib::close_hook cl_hook) |
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301 { |
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302 if (is_open ()) |
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303 { |
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304 do_close_hook (cl_hook); |
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305 |
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306 dlclose (library); |
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307 |
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308 library = 0; |
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309 |
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310 tabula_rasa (); |
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311 } |
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312 } |
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313 |
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314 #elif defined (HAVE_SHL_LOAD_API) |
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315 |
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316 class |
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317 octave_shl_load_shlib : public octave_base_shlib |
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318 { |
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319 public: |
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320 |
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321 octave_shl_load_shlib (void); |
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322 |
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323 ~octave_shl_load_shlib (void); |
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324 |
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325 void open (const std::string& f, bool warn_future = false); |
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326 |
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327 void *search (const std::string& name, name_mangler mangler = 0); |
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328 |
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329 void close (octave_shlib::close_hook cl_hook = 0); |
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330 |
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331 bool is_open (void) const { return (library != 0); } |
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332 |
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333 private: |
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334 |
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335 // No copying! |
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336 |
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337 octave_shl_load_shlib (const octave_shl_load_shlib&); |
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338 |
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339 octave_shl_load_shlib& operator = (const octave_shl_load_shlib&); |
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340 |
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341 shl_t library; |
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342 }; |
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343 |
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344 octave_shl_load_shlib::octave_shl_load_shlib (void) |
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345 : octave_base_shlib (), library (0) |
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346 { |
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347 } |
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348 |
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349 octave_shl_load_shlib::~octave_shl_load_shlib (void) |
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350 { |
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351 close (); |
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352 } |
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353 |
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354 void |
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355 octave_shl_load_shlib::open (const std::string& f, bool warn_future) |
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356 { |
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357 if (! is_open ()) |
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358 { |
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359 file = f; |
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360 |
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361 library = shl_load (file.c_str (), BIND_DEFERRED, 0L); |
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362 |
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363 if (library) |
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364 stamp_time (warn_future); |
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365 else |
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366 { |
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367 using namespace std; |
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368 (*current_liboctave_error_handler) ("%s", strerror (errno)); |
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369 } |
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370 } |
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371 else |
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372 (*current_liboctave_error_handler) |
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373 ("shared library %s is already open", file.c_str ()); |
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374 } |
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375 |
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376 void * |
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377 octave_shl_load_shlib::search (const std::string& name, |
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378 octave_shlib::name_mangler mangler) |
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379 { |
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380 void *function = 0; |
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381 |
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382 if (is_open ()) |
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383 { |
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384 std::string sym_name = name; |
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385 |
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386 if (mangler) |
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387 sym_name = mangler (name); |
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388 |
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389 int status = shl_findsym (&library, sym_name.c_str (), |
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390 TYPE_UNDEFINED, &function); |
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391 |
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392 if (status == 0) |
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393 add_to_fcn_names (name); |
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394 } |
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395 else |
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396 (*current_liboctave_error_handler) |
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397 ("shared library %s is not open", file.c_str ()); |
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398 |
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399 return function; |
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400 } |
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401 |
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402 void |
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403 octave_shl_load_shlib::close (octave_shlib::close_hook cl_hook) |
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404 { |
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405 if (is_open ()) |
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406 { |
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407 do_close_hook (cl_hook); |
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408 |
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409 shl_unload (library); |
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410 |
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411 library = 0; |
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412 |
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413 tabula_rasa (); |
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414 } |
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415 } |
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416 |
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417 #elif defined (HAVE_LOADLIBRARY_API) |
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418 |
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419 class |
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420 octave_w32_shlib: public octave_base_shlib |
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421 { |
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422 public: |
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423 |
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424 octave_w32_shlib (void); |
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425 |
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426 ~octave_w32_shlib (void); |
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427 |
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428 void open (const std::string& f, bool warn_future = false); |
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429 |
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430 void *search (const std::string& name, name_mangler mangler = 0); |
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431 |
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432 void close (octave_shlib::close_hook cl_hook = 0); |
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433 |
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434 bool is_open (void) const { return (handle != 0); } |
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435 |
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436 private: |
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437 |
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438 // No copying! |
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439 |
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440 octave_w32_shlib (const octave_w32_shlib&); |
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441 |
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442 octave_w32_shlib& operator = (const octave_w32_shlib&); |
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443 |
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444 HINSTANCE handle; |
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445 }; |
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446 |
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447 octave_w32_shlib::octave_w32_shlib (void) |
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448 : octave_base_shlib (), handle (0) |
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449 { |
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450 } |
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451 |
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452 octave_w32_shlib::~octave_w32_shlib (void) |
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453 { |
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454 close (); |
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455 } |
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456 |
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457 void |
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458 octave_w32_shlib::open (const std::string& f, bool warn_future) |
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459 { |
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460 if (! is_open ()) |
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461 { |
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462 file = f; |
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463 |
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464 handle = LoadLibrary (file.c_str ()); |
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465 |
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466 if (handle != NULL) |
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467 stamp_time (warn_future); |
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468 else |
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469 { |
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470 DWORD lastError = GetLastError (); |
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471 char *msg; |
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472 |
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473 switch (lastError) |
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474 { |
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475 case ERROR_MOD_NOT_FOUND: |
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476 case ERROR_DLL_NOT_FOUND: |
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477 msg = "could not find library or dependents"; |
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478 break; |
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479 |
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480 case ERROR_INVALID_DLL: |
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481 msg = "library or its dependents are damaged"; |
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482 break; |
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483 |
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484 case ERROR_DLL_INIT_FAILED: |
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485 msg = "library initialization routine failed"; |
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486 break; |
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487 |
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488 default: |
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489 msg = "library open failed"; |
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490 } |
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491 |
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492 (*current_liboctave_error_handler) ("%s: %s", msg, file.c_str ()); |
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493 } |
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494 } |
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495 else |
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496 (*current_liboctave_error_handler) |
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497 ("shared library %s is already open", file.c_str ()); |
|
|
498 } |
|
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499 |
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5451
|
500 extern "C" |
|
|
501 { |
|
|
502 void * octave_w32_search (HINSTANCE handle, const char * name); |
|
|
503 } |
|
|
504 |
|
4110
|
505 void * |
|
|
506 octave_w32_shlib::search (const std::string& name, |
|
|
507 octave_shlib::name_mangler mangler) |
|
|
508 { |
|
|
509 void *function = 0; |
|
|
510 |
|
|
511 if (is_open ()) |
|
|
512 { |
|
|
513 std::string sym_name = name; |
|
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514 |
|
|
515 if (mangler) |
|
|
516 sym_name = mangler (name); |
|
|
517 |
|
5451
|
518 function = octave_w32_library_search (handle, sym_name.c_str ()); |
|
4110
|
519 |
|
|
520 if (function) |
|
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521 add_to_fcn_names (name); |
|
|
522 } |
|
|
523 else |
|
|
524 (*current_liboctave_error_handler) |
|
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525 ("shared library %s is not open", file.c_str ()); |
|
|
526 |
|
|
527 return function; |
|
|
528 } |
|
|
529 |
|
|
530 void |
|
|
531 octave_w32_shlib::close (octave_shlib::close_hook cl_hook) |
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532 { |
|
|
533 if (is_open ()) |
|
|
534 { |
|
|
535 do_close_hook (cl_hook); |
|
|
536 |
|
|
537 FreeLibrary (handle); |
|
|
538 |
|
|
539 handle = 0; |
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|
540 |
|
|
541 tabula_rasa (); |
|
|
542 } |
|
|
543 } |
|
|
544 |
|
4162
|
545 #elif defined (HAVE_DYLD_API) |
|
|
546 |
|
|
547 class |
|
|
548 octave_dyld_shlib : public octave_base_shlib |
|
|
549 { |
|
|
550 public: |
|
|
551 |
|
|
552 octave_dyld_shlib (void); |
|
|
553 |
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|
554 ~octave_dyld_shlib (void); |
|
|
555 |
|
|
556 void open (const std::string& f, bool warn_future = false); |
|
|
557 |
|
|
558 void *search (const std::string& name, name_mangler mangler = 0); |
|
|
559 |
|
|
560 void close (octave_shlib::close_hook cl_hook = 0); |
|
|
561 |
|
|
562 bool is_open (void) const {return (isOpen); } |
|
|
563 |
|
|
564 private: |
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|
565 |
|
|
566 // No copying! |
|
|
567 |
|
|
568 octave_dyld_shlib (const octave_dyld_shlib&); |
|
|
569 |
|
|
570 octave_dyld_shlib& operator = (const octave_dyld_shlib&); |
|
|
571 |
|
|
572 bool isOpen; |
|
|
573 NSObjectFileImage img; |
|
|
574 NSModule handle; |
|
|
575 }; |
|
|
576 |
|
|
577 octave_dyld_shlib::octave_dyld_shlib (void) |
|
|
578 : octave_base_shlib (), isOpen (false), handle (0) |
|
|
579 { |
|
|
580 } |
|
|
581 |
|
|
582 octave_dyld_shlib::~octave_dyld_shlib (void) |
|
|
583 { |
|
|
584 close (); |
|
|
585 } |
|
|
586 |
|
|
587 void |
|
|
588 octave_dyld_shlib::open (const std::string& f, bool warn_future) |
|
|
589 { |
|
|
590 int returnCode; |
|
|
591 |
|
|
592 if (! is_open ()) |
|
|
593 { |
|
|
594 file = f; |
|
|
595 |
|
|
596 returnCode = NSCreateObjectFileImageFromFile (file.c_str (), &img); |
|
|
597 |
|
|
598 if (NSObjectFileImageSuccess == returnCode) |
|
|
599 { |
|
|
600 handle = NSLinkModule (img, file.c_str (), |
|
|
601 (NSLINKMODULE_OPTION_RETURN_ON_ERROR |
|
|
602 | NSLINKMODULE_OPTION_PRIVATE)); |
|
|
603 if (handle) |
|
|
604 { |
|
|
605 stamp_time (warn_future); |
|
|
606 isOpen = true; |
|
|
607 } |
|
|
608 else |
|
|
609 { |
|
|
610 (*current_liboctave_error_handler) |
|
|
611 ("couldn't link module %s", file.c_str ()); |
|
|
612 } |
|
|
613 } |
|
|
614 else |
|
|
615 { |
|
|
616 (*current_liboctave_error_handler) |
|
|
617 ("got NSObjectFileImageReturnCode %d", returnCode); |
|
|
618 |
|
5775
|
619 // FIXME -- should use NSLinkEditError () to get |
|
4162
|
620 // more info on what went wrong. |
|
|
621 } |
|
|
622 } |
|
|
623 else |
|
|
624 { |
|
|
625 (*current_liboctave_error_handler) |
|
|
626 ("bundle %s is already open", file.c_str ()); |
|
|
627 } |
|
|
628 } |
|
|
629 |
|
|
630 void * |
|
|
631 octave_dyld_shlib::search (const std::string& name, |
|
|
632 octave_shlib::name_mangler mangler) |
|
|
633 { |
|
|
634 void *function = 0; |
|
|
635 |
|
|
636 if (is_open ()) |
|
|
637 { |
|
|
638 std::string sym_name = name; |
|
|
639 |
|
|
640 if (mangler) |
|
|
641 sym_name = mangler (name); |
|
|
642 |
|
|
643 NSSymbol symbol = NSLookupSymbolInModule (handle, sym_name.c_str ()); |
|
|
644 |
|
|
645 if (symbol) |
|
|
646 { |
|
|
647 function = NSAddressOfSymbol (symbol); |
|
|
648 add_to_fcn_names (name); |
|
|
649 } |
|
|
650 } |
|
|
651 else |
|
|
652 (*current_liboctave_error_handler) |
|
|
653 ("bundle %s is not open", file.c_str ()); |
|
|
654 |
|
|
655 return function; |
|
|
656 } |
|
|
657 |
|
|
658 void |
|
|
659 octave_dyld_shlib::close (octave_shlib::close_hook cl_hook) |
|
|
660 { |
|
|
661 if (is_open ()) |
|
|
662 { |
|
|
663 do_close_hook (cl_hook); |
|
|
664 |
|
|
665 NSUnLinkModule (handle, NSUNLINKMODULE_OPTION_RESET_LAZY_REFERENCES); |
|
|
666 |
|
|
667 handle = 0; |
|
|
668 |
|
|
669 if (NSDestroyObjectFileImage (img)) |
|
|
670 isOpen = false; |
|
|
671 |
|
|
672 tabula_rasa (); |
|
|
673 } |
|
|
674 } |
|
|
675 |
|
3326
|
676 #endif |
|
|
677 |
|
|
678 octave_shlib * |
|
|
679 octave_shlib::make_shlib (void) |
|
|
680 { |
|
4110
|
681 #if defined (HAVE_DLOPEN_API) |
|
3326
|
682 return new octave_dlopen_shlib (); |
|
4110
|
683 #elif defined (HAVE_SHL_LOAD_API) |
|
3326
|
684 return new octave_shl_load_shlib (); |
|
4110
|
685 #elif defined (HAVE_LOADLIBRARY_API) |
|
|
686 return new octave_w32_shlib (); |
|
4162
|
687 #elif defined (HAVE_DYLD_API) |
|
|
688 return new octave_dyld_shlib (); |
|
3326
|
689 #else |
|
|
690 return new octave_base_shlib (); |
|
|
691 #endif |
|
|
692 } |
|
|
693 |
|
|
694 /* |
|
|
695 ;;; Local Variables: *** |
|
|
696 ;;; mode: C++ *** |
|
|
697 ;;; End: *** |
|
|
698 */ |
