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