Mercurial > octave
annotate libinterp/corefcn/dynamic-ld.cc @ 29359:7854d5752dd2
maint: merge stable to default.
author | John W. Eaton <jwe@octave.org> |
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date | Wed, 10 Feb 2021 10:10:40 -0500 |
parents | 43ad651cf5a0 0a5b15007766 |
children | 796f54d4ddbf |
rev | line source |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 1993-2021 The Octave Project Developers |
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4 // |
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5 // See the file COPYRIGHT.md in the top-level directory of this |
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6 // distribution or <https://octave.org/copyright/>. |
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7 // |
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8 // This file is part of Octave. |
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9 // |
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10 // Octave is free software: you can redistribute it and/or modify it |
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11 // under the terms of the GNU General Public License as published by |
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12 // the Free Software Foundation, either version 3 of the License, or |
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13 // (at your option) any later version. |
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14 // |
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15 // Octave is distributed in the hope that it will be useful, but |
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 // GNU General Public License for more details. |
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19 // |
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20 // You should have received a copy of the GNU General Public License |
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21 // along with Octave; see the file COPYING. If not, see |
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22 // <https://www.gnu.org/licenses/>. |
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23 // |
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24 //////////////////////////////////////////////////////////////////////// |
1 | 25 |
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26 #if defined (HAVE_CONFIG_H) |
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27 # include "config.h" |
1 | 28 #endif |
29 | |
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30 #include <iostream> |
4219 | 31 #include <list> |
32 | |
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33 #include "file-stat.h" |
6323 | 34 #include "oct-env.h" |
3325 | 35 #include "oct-time.h" |
707 | 36 |
3325 | 37 #include "defun.h" |
1352 | 38 #include "dynamic-ld.h" |
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39 #include "interpreter-private.h" |
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40 #include "interpreter.h" |
7336 | 41 #include "ov-fcn.h" |
42 #include "ov-dld-fcn.h" | |
43 #include "ov-mex-fcn.h" | |
3325 | 44 #include "parse.h" |
45 #include "unwind-prot.h" | |
1352 | 46 #include "utils.h" |
707 | 47 #include "variables.h" |
1 | 48 |
5864 | 49 #define STRINGIFY(s) STRINGIFY1(s) |
50 #define STRINGIFY1(s) #s | |
51 | |
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52 namespace octave |
1664 | 53 { |
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54 void |
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55 dynamic_loader::shlibs_list::append (const dynamic_library& shl) |
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56 { |
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57 m_lib_list.push_back (shl); |
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58 } |
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60 std::list<std::string> |
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61 dynamic_loader::shlibs_list::remove (dynamic_library& shl) |
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62 { |
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63 std::list<std::string> removed_fcns; |
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64 |
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65 for (auto p = m_lib_list.begin (); p != m_lib_list.end (); p++) |
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66 { |
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67 if (*p == shl) |
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68 { |
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69 m_lib_list.erase (p); |
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70 |
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71 removed_fcns = shl.close (); |
2894 | 72 |
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73 break; |
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74 } |
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75 } |
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76 |
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77 return removed_fcns; |
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78 } |
2894 | 79 |
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80 dynamic_library |
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81 dynamic_loader::shlibs_list::find_file (const std::string& file_name) const |
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82 { |
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83 dynamic_library retval; |
3321 | 84 |
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85 for (const auto& lib : m_lib_list) |
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86 { |
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87 if (lib.file_name () == file_name) |
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88 { |
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89 retval = lib; |
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90 break; |
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91 } |
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92 } |
1664 | 93 |
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94 return retval; |
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95 } |
1664 | 96 |
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97 void |
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98 dynamic_loader::shlibs_list::display (void) const |
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99 { |
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100 std::cerr << "current shared libraries:" << std::endl; |
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101 for (const auto& lib : m_lib_list) |
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102 std::cerr << " " << lib.file_name () << std::endl; |
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103 } |
1664 | 104 |
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105 void |
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106 dynamic_loader::clear_function (const std::string& fcn_name) |
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107 { |
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108 warning_with_id ("Octave:reload-forces-clear", " %s", fcn_name.c_str ()); |
2926 | 109 |
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110 // FIXME: is there a way to avoid this? Can we manage the list of |
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111 // functions that are loaded in the symbol table completely outside |
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112 // of the dynamic_loader class? |
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113 |
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114 symbol_table& symtab = m_interpreter.get_symbol_table (); |
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115 |
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116 symtab.clear_dld_function (fcn_name); |
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117 } |
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118 |
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119 void |
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120 dynamic_loader::clear (dynamic_library& oct_file) |
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121 { |
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122 if (oct_file.number_of_functions_loaded () > 1) |
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123 { |
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124 warning_with_id ("Octave:reload-forces-clear", |
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125 "reloading %s clears the following functions:", |
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126 oct_file.file_name ().c_str ()); |
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128 std::list<std::string> removed_fcns = m_loaded_shlibs.remove (oct_file); |
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129 |
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130 for (const auto& fcn_name : removed_fcns) |
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131 clear_function (fcn_name); |
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132 } |
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133 else |
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134 { |
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135 std::list<std::string> removed_fcns = m_loaded_shlibs.remove (oct_file); |
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136 |
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137 // FIXME: is there a way to avoid this? Can we manage the list |
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138 // of functions that are loaded in the symbol table completely |
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139 // outside of the dynamic_loader class? |
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140 |
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141 symbol_table& symtab = m_interpreter.get_symbol_table (); |
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142 |
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143 for (const auto& fcn_name : removed_fcns) |
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144 symtab.clear_dld_function (fcn_name); |
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145 } |
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146 } |
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148 octave_function * |
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149 dynamic_loader::load_oct (const std::string& fcn_name, |
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150 const std::string& file_name, |
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151 bool relative) |
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152 { |
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153 octave_function *retval = nullptr; |
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155 unwind_protect_var<bool> restore_var (m_doing_load, true); |
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156 |
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157 dynamic_library oct_file = m_loaded_shlibs.find_file (file_name); |
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159 if (oct_file && oct_file.is_out_of_date ()) |
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160 clear (oct_file); |
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162 if (! oct_file) |
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163 { |
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164 oct_file.open (file_name); |
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165 |
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166 if (oct_file) |
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167 m_loaded_shlibs.append (oct_file); |
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168 } |
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170 if (! oct_file) |
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171 error ("%s is not a valid shared library", file_name.c_str ()); |
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173 void *function = oct_file.search (fcn_name, name_mangler); |
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175 if (! function) |
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176 { |
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177 // FIXME: can we determine this C mangling scheme |
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178 // automatically at run time or configure time? |
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180 function = oct_file.search (fcn_name, name_uscore_mangler); |
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181 } |
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183 if (function) |
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184 { |
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185 octave_dld_fcn_getter f |
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186 = reinterpret_cast<octave_dld_fcn_getter> (function); |
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187 |
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188 retval = f (oct_file, relative); |
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190 if (! retval) |
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191 error ("failed to install .oct file function '%s'", |
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192 fcn_name.c_str ()); |
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193 } |
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195 return retval; |
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196 } |
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198 void * |
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199 dynamic_loader::try_load_mex (dynamic_library& mex_file, |
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200 const std::string& fcn_name, bool& have_fmex) |
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201 { |
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202 // FCN_NAME is not used here, the mangler functions always return |
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203 // some form of "mexFunction". |
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204 |
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205 have_fmex = false; |
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206 |
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207 void *function = mex_file.search (fcn_name, mex_mangler); |
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208 |
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209 if (! function) |
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210 { |
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211 // FIXME: Can we determine this C mangling scheme |
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212 // automatically at run time or configure time? |
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213 |
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214 function = mex_file.search (fcn_name, mex_uscore_mangler); |
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215 |
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216 if (! function) |
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217 { |
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218 function = mex_file.search (fcn_name, mex_f77_mangler); |
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219 |
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220 if (function) |
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221 have_fmex = true; |
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222 } |
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223 } |
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224 |
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225 return function; |
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226 } |
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227 |
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228 octave_function * |
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229 dynamic_loader::load_mex (const std::string& fcn_name, |
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230 const std::string& file_name, |
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231 bool /*relative*/) |
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232 { |
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233 unwind_protect_var<bool> restore_var (m_doing_load, true); |
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234 |
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235 dynamic_library mex_file = m_loaded_shlibs.find_file (file_name); |
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236 |
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237 if (mex_file && mex_file.is_out_of_date ()) |
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238 clear (mex_file); |
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239 |
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240 if (! mex_file) |
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241 { |
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242 mex_file.open (file_name); |
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243 |
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244 if (mex_file) |
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245 m_loaded_shlibs.append (mex_file); |
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246 } |
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248 if (! mex_file) |
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249 error ("%s is not a valid shared library", file_name.c_str ()); |
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250 |
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251 bool have_fmex = false; |
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252 |
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253 void *function = try_load_mex (mex_file, fcn_name, have_fmex); |
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254 |
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255 if (! function) |
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256 error ("failed to install .mex file function '%s'", fcn_name.c_str ()); |
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258 void *symbol = mex_file.search ("__mx_has_interleaved_complex__"); |
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259 |
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260 bool interleaved = symbol != nullptr; |
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261 |
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262 return new octave_mex_function (function, interleaved, have_fmex, |
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263 mex_file, fcn_name); |
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264 } |
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265 |
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266 bool |
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267 dynamic_loader::remove_oct (const std::string& fcn_name, |
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268 dynamic_library& shl) |
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269 { |
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270 bool retval = false; |
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272 // We don't need to do anything if this is called because we are in |
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273 // the process of reloading a .oct file that has changed. |
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275 if (! m_doing_load) |
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276 { |
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277 retval = shl.remove (fcn_name); |
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279 if (shl.number_of_functions_loaded () == 0) |
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280 m_loaded_shlibs.remove (shl); |
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281 } |
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283 return retval; |
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284 } |
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285 |
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286 bool |
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287 dynamic_loader::remove_mex (const std::string& fcn_name, |
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288 dynamic_library& shl) |
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289 { |
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290 // Use the same procedure as for oct files. |
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291 return remove_oct (fcn_name, shl); |
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292 } |
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293 |
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294 std::string |
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295 dynamic_loader::name_mangler (const std::string& name) |
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296 { |
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297 return 'G' + name; |
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298 } |
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299 |
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300 std::string |
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301 dynamic_loader::name_uscore_mangler (const std::string& name) |
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302 { |
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303 return "_G" + name; |
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304 } |
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305 |
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306 std::string |
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307 dynamic_loader::mex_mangler (const std::string&) |
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308 { |
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309 return "mexFunction"; |
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310 } |
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312 std::string |
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313 dynamic_loader::mex_uscore_mangler (const std::string&) |
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314 { |
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315 return "_mexFunction"; |
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316 } |
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318 std::string |
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319 dynamic_loader::mex_f77_mangler (const std::string&) |
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320 { |
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321 return STRINGIFY (F77_FUNC (mexfunction, MEXFUNCTION)); |
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322 } |
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