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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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 #include <config.h> |
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25 #endif |
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26 |
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27 #if defined (HAVE_SHL_LOAD_API) |
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28 #include <cerrno> |
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29 #include <cstring> |
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30 #endif |
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31 |
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32 #if defined (HAVE_DYLD_API) |
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33 #include <mach-o/dyld.h> |
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34 #endif |
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35 |
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36 extern "C" |
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37 { |
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38 #if defined (HAVE_DLOPEN_API) |
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39 #if defined (HAVE_DLFCN_H) |
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40 #include <dlfcn.h> |
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41 #else |
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42 extern void *dlopen (const char *, int); |
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43 extern const char *dlerror (void); |
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44 extern void *dlsym (void *, const char *); |
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45 extern int dlclose (void *); |
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46 #endif |
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47 #elif defined (HAVE_SHL_LOAD_API) |
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48 #include <dl.h> |
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49 #endif |
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50 } |
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51 |
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52 #include "file-stat.h" |
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53 #include "lo-error.h" |
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54 #include "oct-shlib.h" |
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55 #include "str-vec.h" |
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56 |
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57 class |
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58 octave_base_shlib : public octave_shlib |
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59 { |
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60 public: |
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61 |
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62 octave_base_shlib (void) |
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63 : octave_shlib (octave_xshlib ()), file (), fcn_names (), |
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64 tm_loaded (static_cast<time_t> (0)) |
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65 { count = 1; } |
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66 |
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67 octave_base_shlib (const std::string& f) |
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68 : octave_shlib (octave_xshlib ()), file (f), fcn_names (), |
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69 tm_loaded (static_cast<time_t> (0)) |
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70 { count = 1; } |
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71 |
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72 ~octave_base_shlib (void) { } |
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73 |
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74 void open (const std::string&, bool = false) { } |
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75 |
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76 void *search (const std::string&, name_mangler = 0) { return 0; } |
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77 |
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78 void close (octave_shlib::close_hook = 0) { } |
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79 |
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80 bool remove (const std::string& fcn_name); |
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81 |
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82 bool is_open (void) const { return false; } |
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83 |
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84 bool is_out_of_date (void) const; |
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85 |
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86 int number_of_functions_loaded (void) const { return fcn_names.length (); } |
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87 |
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88 std::string file_name (void) const { return file; } |
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89 |
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90 octave_time time_loaded (void) const { return tm_loaded; } |
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91 |
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92 protected: |
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93 |
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94 std::string file; |
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95 |
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96 string_vector fcn_names; |
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97 |
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98 octave_time tm_loaded; |
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99 |
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100 void stamp_time (bool warn_future = false); |
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101 |
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102 void add_to_fcn_names (const std::string& name); |
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103 |
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104 void do_close_hook (octave_shlib::close_hook = 0); |
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105 |
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106 void tabula_rasa (void); |
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107 |
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108 // No copying! |
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109 |
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110 octave_base_shlib (const octave_base_shlib&); |
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111 |
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112 octave_base_shlib& operator = (const octave_base_shlib&); |
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113 }; |
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114 |
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115 bool |
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116 octave_base_shlib::remove (const std::string& fcn_name) |
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117 { |
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118 bool retval = false; |
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119 |
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120 int n = number_of_functions_loaded (); |
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121 |
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122 string_vector new_fcn_names (n); |
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123 |
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124 int k = 0; |
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125 |
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126 for (int i = 0; i < n; i++) |
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127 { |
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128 if (fcn_names(i) == fcn_name) |
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129 retval = true; |
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130 else |
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131 new_fcn_names(k++) = fcn_names(i); |
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132 } |
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133 |
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134 new_fcn_names.resize (k); |
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135 |
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136 fcn_names = new_fcn_names; |
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137 |
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138 return retval; |
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139 } |
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140 |
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141 bool |
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142 octave_base_shlib::is_out_of_date (void) const |
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143 { |
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144 file_stat fs (file); |
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145 |
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146 return fs.is_newer (tm_loaded); |
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147 } |
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148 |
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149 void |
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150 octave_base_shlib::stamp_time (bool warn_future) |
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151 { |
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152 tm_loaded.stamp (); |
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153 |
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154 if (warn_future) |
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155 { |
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156 file_stat fs (file); |
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157 |
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158 if (fs.is_newer (tm_loaded)) |
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159 (*current_liboctave_warning_handler) |
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160 ("timestamp on file %s is in the future", file.c_str ()); |
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161 } |
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162 } |
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163 |
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164 void |
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165 octave_base_shlib::add_to_fcn_names (const std::string& name) |
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166 { |
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167 int n = number_of_functions_loaded (); |
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168 |
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169 for (int i = 0; i < n; i++) |
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170 if (fcn_names(i) == name) |
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171 return; |
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172 |
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173 fcn_names.resize (n+1); |
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174 |
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175 fcn_names(n) = name; |
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176 } |
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177 |
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178 void |
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179 octave_base_shlib::do_close_hook (octave_shlib::close_hook cl_hook) |
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180 { |
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181 int n = number_of_functions_loaded (); |
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182 |
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183 for (int i = 0; i < n; i++) |
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184 cl_hook (fcn_names(i)); |
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185 } |
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186 |
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187 void |
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188 octave_base_shlib::tabula_rasa (void) |
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189 { |
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190 file = ""; |
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191 |
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192 fcn_names.resize (0); |
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193 |
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194 tm_loaded = static_cast<time_t> (0); |
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195 } |
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196 |
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197 #if defined (HAVE_DLOPEN_API) |
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198 |
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199 class |
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200 octave_dlopen_shlib : public octave_base_shlib |
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201 { |
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202 public: |
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203 |
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204 octave_dlopen_shlib (void); |
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205 |
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206 ~octave_dlopen_shlib (void); |
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207 |
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208 void open (const std::string& f, bool warn_future = false); |
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209 |
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210 void *search (const std::string& name, name_mangler mangler = 0); |
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211 |
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212 void close (octave_shlib::close_hook cl_hook = 0); |
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213 |
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214 bool is_open (void) const { return (library != 0); } |
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215 |
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216 private: |
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217 |
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218 // No copying! |
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219 |
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220 octave_dlopen_shlib (const octave_dlopen_shlib&); |
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221 |
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222 octave_dlopen_shlib& operator = (const octave_dlopen_shlib&); |
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223 |
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224 void *library; |
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225 }; |
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226 |
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227 octave_dlopen_shlib::octave_dlopen_shlib (void) |
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228 : octave_base_shlib (), library (0) |
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229 { |
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230 } |
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231 |
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232 octave_dlopen_shlib::~octave_dlopen_shlib (void) |
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233 { |
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234 close (); |
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235 } |
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236 |
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237 void |
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238 octave_dlopen_shlib::open (const std::string& f, bool warn_future) |
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239 { |
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240 if (! is_open ()) |
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241 { |
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242 file = f; |
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243 |
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244 int flags = 0; |
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245 |
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246 #if defined (RTLD_LAZY) |
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247 flags |= RTLD_LAZY; |
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248 #endif |
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249 |
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250 #if defined (RTLD_GLOBAL) |
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251 flags |= RTLD_GLOBAL; |
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252 #endif |
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253 |
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254 library = dlopen (file.c_str (), flags); |
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255 |
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256 if (library) |
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257 stamp_time (warn_future); |
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258 else |
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259 { |
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260 const char *msg = dlerror (); |
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261 |
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262 if (msg) |
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263 (*current_liboctave_error_handler) ("%s", msg); |
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264 } |
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265 } |
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266 else |
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267 (*current_liboctave_error_handler) |
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268 ("shared library %s is already open", file.c_str ()); |
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269 } |
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270 |
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271 void * |
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272 octave_dlopen_shlib::search (const std::string& name, |
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273 octave_shlib::name_mangler mangler) |
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274 { |
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275 void *function = 0; |
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276 |
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277 if (is_open ()) |
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278 { |
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279 std::string sym_name = name; |
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280 |
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281 if (mangler) |
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282 sym_name = mangler (name); |
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283 |
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284 function = dlsym (library, sym_name.c_str ()); |
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285 |
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286 if (function) |
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287 add_to_fcn_names (name); |
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288 } |
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289 else |
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290 (*current_liboctave_error_handler) |
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291 ("shared library %s is not open", file.c_str ()); |
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292 |
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293 return function; |
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294 } |
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295 |
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296 void |
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297 octave_dlopen_shlib::close (octave_shlib::close_hook cl_hook) |
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298 { |
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299 if (is_open ()) |
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300 { |
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301 do_close_hook (cl_hook); |
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302 |
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303 dlclose (library); |
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304 |
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305 library = 0; |
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306 |
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307 tabula_rasa (); |
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308 } |
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309 } |
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310 |
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311 #elif defined (HAVE_SHL_LOAD_API) |
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312 |
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313 class |
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314 octave_shl_load_shlib : public octave_base_shlib |
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315 { |
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316 public: |
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317 |
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318 octave_shl_load_shlib (void); |
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319 |
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320 ~octave_shl_load_shlib (void); |
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321 |
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322 void open (const std::string& f, bool warn_future = false); |
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323 |
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324 void *search (const std::string& name, name_mangler mangler = 0); |
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325 |
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326 void close (octave_shlib::close_hook cl_hook = 0); |
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327 |
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328 bool is_open (void) const { return (library != 0); } |
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329 |
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330 private: |
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331 |
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332 // No copying! |
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333 |
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334 octave_shl_load_shlib (const octave_shl_load_shlib&); |
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335 |
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336 octave_shl_load_shlib& operator = (const octave_shl_load_shlib&); |
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337 |
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338 shl_t library; |
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339 }; |
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340 |
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341 octave_shl_load_shlib::octave_shl_load_shlib (void) |
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342 : octave_base_shlib (), library (0) |
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343 { |
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344 } |
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345 |
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346 octave_shl_load_shlib::~octave_shl_load_shlib (void) |
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347 { |
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348 close (); |
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349 } |
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350 |
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351 void |
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352 octave_shl_load_shlib::open (const std::string& f, bool warn_future) |
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353 { |
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354 if (! is_open ()) |
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355 { |
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356 file = f; |
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357 |
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358 library = shl_load (file.c_str (), BIND_DEFERRED, 0L); |
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359 |
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360 if (library) |
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361 stamp_time (warn_future); |
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362 else |
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363 { |
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364 using namespace std; |
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365 (*current_liboctave_error_handler) ("%s", strerror (errno)); |
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366 } |
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367 } |
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368 else |
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369 (*current_liboctave_error_handler) |
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370 ("shared library %s is already open", file.c_str ()); |
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371 } |
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372 |
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373 void * |
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374 octave_shl_load_shlib::search (const std::string& name, |
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375 octave_shlib::name_mangler mangler) |
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376 { |
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377 void *function = 0; |
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378 |
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379 if (is_open ()) |
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380 { |
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381 std::string sym_name = name; |
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382 |
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383 if (mangler) |
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384 sym_name = mangler (name); |
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385 |
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386 int status = shl_findsym (&library, sym_name.c_str (), |
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387 TYPE_UNDEFINED, &function); |
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388 |
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389 if (status == 0) |
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390 add_to_fcn_names (name); |
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391 } |
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392 else |
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393 (*current_liboctave_error_handler) |
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394 ("shared library %s is not open", file.c_str ()); |
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395 |
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396 return function; |
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397 } |
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398 |
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399 void |
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400 octave_shl_load_shlib::close (octave_shlib::close_hook cl_hook) |
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401 { |
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402 if (is_open ()) |
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403 { |
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404 do_close_hook (cl_hook); |
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405 |
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406 shl_unload (library); |
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407 |
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408 library = 0; |
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409 |
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410 tabula_rasa (); |
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411 } |
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412 } |
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413 |
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414 #elif defined (HAVE_LOADLIBRARY_API) |
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415 |
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416 class |
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417 octave_w32_shlib: public octave_base_shlib |
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418 { |
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419 public: |
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420 |
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421 octave_w32_shlib (void); |
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422 |
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423 ~octave_w32_shlib (void); |
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424 |
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425 void open (const std::string& f, bool warn_future = false); |
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426 |
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427 void *search (const std::string& name, name_mangler mangler = 0); |
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428 |
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429 void close (octave_shlib::close_hook cl_hook = 0); |
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430 |
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431 bool is_open (void) const { return (handle != 0); } |
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432 |
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433 private: |
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434 |
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435 // No copying! |
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436 |
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437 octave_w32_shlib (const octave_w32_shlib&); |
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438 |
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439 octave_w32_shlib& operator = (const octave_w32_shlib&); |
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440 |
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441 HINSTANCE handle; |
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442 }; |
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443 |
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444 octave_w32_shlib::octave_w32_shlib (void) |
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445 : octave_base_shlib (), handle (0) |
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446 { |
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447 } |
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448 |
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449 octave_w32_shlib::~octave_w32_shlib (void) |
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450 { |
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451 close (); |
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452 } |
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453 |
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454 void |
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455 octave_w32_shlib::open (const std::string& f, bool warn_future) |
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456 { |
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457 if (! is_open ()) |
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458 { |
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459 file = f; |
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460 |
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461 handle = LoadLibrary (file.c_str ()); |
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462 |
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463 if (handle != NULL) |
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464 stamp_time (warn_future); |
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465 else |
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466 { |
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467 DWORD lastError = GetLastError (); |
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468 char *msg; |
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469 |
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470 switch (lastError) |
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471 { |
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472 case ERROR_MOD_NOT_FOUND: |
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473 case ERROR_DLL_NOT_FOUND: |
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474 msg = "could not find library or dependents"; |
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475 break; |
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476 |
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477 case ERROR_INVALID_DLL: |
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478 msg = "library or its dependents are damaged"; |
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479 break; |
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480 |
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481 case ERROR_DLL_INIT_FAILED: |
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482 msg = "library initialization routine failed"; |
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483 break; |
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484 |
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485 default: |
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486 msg = "library open failed"; |
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487 } |
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488 |
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489 (*current_liboctave_error_handler) ("%s: %s", msg, file.c_str ()); |
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490 } |
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491 } |
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492 else |
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493 (*current_liboctave_error_handler) |
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494 ("shared library %s is already open", file.c_str ()); |
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495 } |
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496 |
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497 void * |
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498 octave_w32_shlib::search (const std::string& name, |
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499 octave_shlib::name_mangler mangler) |
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500 { |
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501 void *function = 0; |
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502 |
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503 if (is_open ()) |
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504 { |
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505 std::string sym_name = name; |
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506 |
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507 if (mangler) |
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508 sym_name = mangler (name); |
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509 |
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510 function |
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511 = static_cast<void *> (GetProcAddress (handle, sym_name.c_str ())); |
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512 |
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513 if (function) |
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514 add_to_fcn_names (name); |
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515 } |
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516 else |
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517 (*current_liboctave_error_handler) |
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518 ("shared library %s is not open", file.c_str ()); |
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519 |
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520 return function; |
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521 } |
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522 |
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523 void |
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524 octave_w32_shlib::close (octave_shlib::close_hook cl_hook) |
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525 { |
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526 if (is_open ()) |
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527 { |
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528 do_close_hook (cl_hook); |
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529 |
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530 FreeLibrary (handle); |
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531 |
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532 handle = 0; |
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533 |
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534 tabula_rasa (); |
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535 } |
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536 } |
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537 |
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4162
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538 #elif defined (HAVE_DYLD_API) |
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539 |
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540 class |
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541 octave_dyld_shlib : public octave_base_shlib |
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542 { |
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543 public: |
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544 |
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545 octave_dyld_shlib (void); |
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546 |
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547 ~octave_dyld_shlib (void); |
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548 |
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549 void open (const std::string& f, bool warn_future = false); |
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550 |
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551 void *search (const std::string& name, name_mangler mangler = 0); |
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552 |
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553 void close (octave_shlib::close_hook cl_hook = 0); |
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554 |
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555 bool is_open (void) const {return (isOpen); } |
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556 |
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557 private: |
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558 |
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559 // No copying! |
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560 |
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561 octave_dyld_shlib (const octave_dyld_shlib&); |
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562 |
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563 octave_dyld_shlib& operator = (const octave_dyld_shlib&); |
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564 |
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565 bool isOpen; |
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566 NSObjectFileImage img; |
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567 NSModule handle; |
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568 }; |
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569 |
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570 octave_dyld_shlib::octave_dyld_shlib (void) |
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571 : octave_base_shlib (), isOpen (false), handle (0) |
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572 { |
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573 } |
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574 |
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575 octave_dyld_shlib::~octave_dyld_shlib (void) |
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576 { |
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577 close (); |
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578 } |
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579 |
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580 void |
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581 octave_dyld_shlib::open (const std::string& f, bool warn_future) |
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582 { |
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583 int returnCode; |
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584 |
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585 if (! is_open ()) |
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586 { |
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587 file = f; |
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588 |
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589 returnCode = NSCreateObjectFileImageFromFile (file.c_str (), &img); |
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590 |
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591 if (NSObjectFileImageSuccess == returnCode) |
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592 { |
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593 handle = NSLinkModule (img, file.c_str (), |
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594 (NSLINKMODULE_OPTION_RETURN_ON_ERROR |
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595 | NSLINKMODULE_OPTION_PRIVATE)); |
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596 if (handle) |
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597 { |
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598 stamp_time (warn_future); |
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599 isOpen = true; |
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600 } |
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601 else |
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602 { |
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603 (*current_liboctave_error_handler) |
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604 ("couldn't link module %s", file.c_str ()); |
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605 } |
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606 } |
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607 else |
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608 { |
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|
609 (*current_liboctave_error_handler) |
|
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610 ("got NSObjectFileImageReturnCode %d", returnCode); |
|
|
611 |
|
|
612 // XXX FIXME XXX -- should use NSLinkEditError () to get |
|
|
613 // more info on what went wrong. |
|
|
614 } |
|
|
615 } |
|
|
616 else |
|
|
617 { |
|
|
618 (*current_liboctave_error_handler) |
|
|
619 ("bundle %s is already open", file.c_str ()); |
|
|
620 } |
|
|
621 } |
|
|
622 |
|
|
623 void * |
|
|
624 octave_dyld_shlib::search (const std::string& name, |
|
|
625 octave_shlib::name_mangler mangler) |
|
|
626 { |
|
|
627 void *function = 0; |
|
|
628 |
|
|
629 if (is_open ()) |
|
|
630 { |
|
|
631 std::string sym_name = name; |
|
|
632 |
|
|
633 if (mangler) |
|
|
634 sym_name = mangler (name); |
|
|
635 |
|
|
636 NSSymbol symbol = NSLookupSymbolInModule (handle, sym_name.c_str ()); |
|
|
637 |
|
|
638 if (symbol) |
|
|
639 { |
|
|
640 function = NSAddressOfSymbol (symbol); |
|
|
641 add_to_fcn_names (name); |
|
|
642 } |
|
|
643 } |
|
|
644 else |
|
|
645 (*current_liboctave_error_handler) |
|
|
646 ("bundle %s is not open", file.c_str ()); |
|
|
647 |
|
|
648 return function; |
|
|
649 } |
|
|
650 |
|
|
651 void |
|
|
652 octave_dyld_shlib::close (octave_shlib::close_hook cl_hook) |
|
|
653 { |
|
|
654 if (is_open ()) |
|
|
655 { |
|
|
656 do_close_hook (cl_hook); |
|
|
657 |
|
|
658 NSUnLinkModule (handle, NSUNLINKMODULE_OPTION_RESET_LAZY_REFERENCES); |
|
|
659 |
|
|
660 handle = 0; |
|
|
661 |
|
|
662 if (NSDestroyObjectFileImage (img)) |
|
|
663 isOpen = false; |
|
|
664 |
|
|
665 tabula_rasa (); |
|
|
666 } |
|
|
667 } |
|
|
668 |
|
3326
|
669 #endif |
|
|
670 |
|
|
671 octave_shlib * |
|
|
672 octave_shlib::make_shlib (void) |
|
|
673 { |
|
4110
|
674 #if defined (HAVE_DLOPEN_API) |
|
3326
|
675 return new octave_dlopen_shlib (); |
|
4110
|
676 #elif defined (HAVE_SHL_LOAD_API) |
|
3326
|
677 return new octave_shl_load_shlib (); |
|
4110
|
678 #elif defined (HAVE_LOADLIBRARY_API) |
|
|
679 return new octave_w32_shlib (); |
|
4162
|
680 #elif defined (HAVE_DYLD_API) |
|
|
681 return new octave_dyld_shlib (); |
|
3326
|
682 #else |
|
|
683 return new octave_base_shlib (); |
|
|
684 #endif |
|
|
685 } |
|
|
686 |
|
|
687 /* |
|
|
688 ;;; Local Variables: *** |
|
|
689 ;;; mode: C++ *** |
|
|
690 ;;; End: *** |
|
|
691 */ |
