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