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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 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 3 of the License, or (at your |
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10 option) any 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, see |
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19 <http://www.gnu.org/licenses/>. |
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20 |
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21 */ |
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22 |
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240
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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 #include <list> |
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28 |
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29 #include "oct-env.h" |
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30 #include "oct-time.h" |
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31 #include "file-stat.h" |
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32 |
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33 #include <defaults.h> |
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34 |
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35 #include "defun.h" |
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36 #include "dynamic-ld.h" |
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37 #include "parse.h" |
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38 #include "unwind-prot.h" |
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39 #include "utils.h" |
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40 #include "variables.h" |
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41 |
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5864
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42 #define STRINGIFY(s) STRINGIFY1(s) |
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43 #define STRINGIFY1(s) #s |
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44 |
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45 class |
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46 octave_shlib_list |
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47 { |
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48 public: |
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49 |
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50 static void append (const octave_shlib& shl); |
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51 |
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52 static void remove (octave_shlib& shl, octave_shlib::close_hook cl_hook = 0); |
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53 |
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54 static void *search (const std::string& fcn_name, octave_shlib& shl, |
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55 octave_shlib::name_mangler mangler = 0); |
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56 |
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57 private: |
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58 |
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59 octave_shlib_list (void) { } |
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60 |
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61 ~octave_shlib_list (void) { } |
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62 |
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63 void do_append (const octave_shlib& shl); |
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64 |
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65 void do_remove (octave_shlib& shl, octave_shlib::close_hook cl_hook = 0); |
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66 |
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67 void *do_search (const std::string& fcn_name, octave_shlib& shl, |
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68 octave_shlib::name_mangler mangler = 0); |
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69 |
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70 static octave_shlib_list *instance; |
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71 |
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72 static bool instance_ok (void); |
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73 |
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74 // List of libraries we have loaded. |
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75 std::list<octave_shlib> lib_list; |
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76 |
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77 // No copying! |
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78 |
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79 octave_shlib_list (const octave_shlib_list&); |
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80 |
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81 octave_shlib_list& operator = (const octave_shlib_list&); |
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82 }; |
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83 |
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84 octave_shlib_list *octave_shlib_list::instance = 0; |
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85 |
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86 void |
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87 octave_shlib_list::do_append (const octave_shlib& shl) |
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88 { |
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89 lib_list.push_back (shl); |
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90 } |
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91 |
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92 void |
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93 octave_shlib_list::do_remove (octave_shlib& shl, |
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94 octave_shlib::close_hook cl_hook) |
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95 { |
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96 for (std::list<octave_shlib>::iterator p = lib_list.begin (); |
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97 p != lib_list.end (); |
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98 p++) |
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99 { |
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100 if (*p == shl) |
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101 { |
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102 shl.close (cl_hook); |
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103 |
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104 lib_list.erase (p); |
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105 |
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106 break; |
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107 } |
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108 } |
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109 } |
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110 |
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111 void * |
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112 octave_shlib_list::do_search (const std::string& fcn_name, octave_shlib& shl, |
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113 octave_shlib::name_mangler mangler) |
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114 { |
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115 void *function = 0; |
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116 |
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117 shl = octave_shlib (); |
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118 |
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119 for (std::list<octave_shlib>::iterator p = lib_list.begin (); |
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120 p != lib_list.end (); |
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121 p++) |
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122 { |
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123 function = p->search (fcn_name, mangler); |
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124 |
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125 if (function) |
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126 { |
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127 shl = *p; |
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128 |
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129 break; |
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130 } |
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131 } |
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132 |
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133 return function; |
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134 } |
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135 |
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136 bool |
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137 octave_shlib_list::instance_ok (void) |
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138 { |
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139 bool retval = true; |
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140 |
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141 if (! instance) |
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142 instance = new octave_shlib_list (); |
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143 |
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144 if (! instance) |
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145 { |
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146 ::error ("unable to create shared library list object!"); |
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147 |
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148 retval = false; |
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149 } |
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150 |
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151 return retval; |
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152 } |
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153 |
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154 void |
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155 octave_shlib_list::append (const octave_shlib& shl) |
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156 { |
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157 if (instance_ok ()) |
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158 instance->do_append (shl); |
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159 } |
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160 |
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161 void |
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162 octave_shlib_list::remove (octave_shlib& shl, |
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163 octave_shlib::close_hook cl_hook) |
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164 { |
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165 if (instance_ok ()) |
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166 instance->do_remove (shl, cl_hook); |
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167 } |
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168 |
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169 void * |
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170 octave_shlib_list::search (const std::string& fcn_name, octave_shlib& shl, |
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171 octave_shlib::name_mangler mangler) |
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172 { |
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173 return (instance_ok ()) ? instance->do_search (fcn_name, shl, mangler) : 0; |
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174 } |
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175 |
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176 class |
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177 octave_mex_file_list |
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178 { |
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179 public: |
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180 |
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181 static void append (const octave_shlib& shl); |
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182 |
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183 static void remove (octave_shlib& shl, octave_shlib::close_hook cl_hook = 0); |
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184 |
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185 private: |
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186 |
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187 octave_mex_file_list (void) { } |
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188 |
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189 ~octave_mex_file_list (void) { } |
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190 |
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191 void do_append (const octave_shlib& shl); |
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192 |
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193 void do_remove (octave_shlib& shl, octave_shlib::close_hook cl_hook = 0); |
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194 |
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195 static octave_mex_file_list *instance; |
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196 |
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197 static bool instance_ok (void); |
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198 |
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199 // List of libraries we have loaded. |
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200 std::list<octave_shlib> file_list; |
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201 |
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202 // No copying! |
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203 |
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204 octave_mex_file_list (const octave_mex_file_list&); |
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205 |
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206 octave_mex_file_list& operator = (const octave_mex_file_list&); |
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207 }; |
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208 |
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209 octave_mex_file_list *octave_mex_file_list::instance = 0; |
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210 |
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211 void |
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212 octave_mex_file_list::do_append (const octave_shlib& shl) |
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213 { |
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214 file_list.push_back (shl); |
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215 } |
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216 |
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217 void |
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218 octave_mex_file_list::do_remove (octave_shlib& shl, |
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219 octave_shlib::close_hook cl_hook) |
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220 { |
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221 |
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222 for (std::list<octave_shlib>::iterator p = file_list.begin (); |
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223 p != file_list.end (); |
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224 p++) |
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225 { |
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226 if (*p == shl) |
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227 { |
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228 shl.close (cl_hook); |
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229 |
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230 file_list.erase (p); |
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231 |
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232 break; |
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233 } |
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234 } |
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235 } |
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236 |
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237 bool |
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238 octave_mex_file_list::instance_ok (void) |
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239 { |
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240 bool retval = true; |
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241 |
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242 if (! instance) |
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243 instance = new octave_mex_file_list (); |
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244 |
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245 if (! instance) |
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246 { |
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247 ::error ("unable to create shared library list object!"); |
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248 |
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249 retval = false; |
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250 } |
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251 |
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252 return retval; |
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253 } |
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254 |
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255 void |
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256 octave_mex_file_list::append (const octave_shlib& shl) |
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257 { |
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258 if (instance_ok ()) |
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259 instance->do_append (shl); |
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260 } |
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261 |
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262 void |
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263 octave_mex_file_list::remove (octave_shlib& shl, |
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264 octave_shlib::close_hook cl_hook) |
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265 { |
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266 if (instance_ok ()) |
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267 instance->do_remove (shl, cl_hook); |
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268 } |
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269 |
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270 octave_dynamic_loader *octave_dynamic_loader::instance = 0; |
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271 |
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272 bool octave_dynamic_loader::doing_load = false; |
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273 |
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2969
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274 bool |
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275 octave_dynamic_loader::instance_ok (void) |
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276 { |
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277 bool retval = true; |
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278 |
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279 if (! instance) |
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280 instance = new octave_dynamic_loader (); |
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281 |
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282 if (! instance) |
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283 { |
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284 ::error ("unable to create dynamic loader object!"); |
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285 |
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286 retval = false; |
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287 } |
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288 |
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289 return retval; |
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290 } |
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291 |
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292 static |
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293 void do_clear_function (const std::string& fcn_name) |
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294 { |
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295 warning_with_id ("Octave:reload-forces-clear", " %s", fcn_name.c_str ()); |
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296 |
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297 curr_sym_tab->clear (fcn_name); |
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298 |
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299 if (curr_sym_tab != top_level_sym_tab) |
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300 top_level_sym_tab->clear (fcn_name); |
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301 |
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302 fbi_sym_tab->clear (fcn_name); |
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3325
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303 } |
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304 |
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305 static void |
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306 clear (octave_shlib& oct_file) |
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307 { |
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308 if (oct_file.number_of_functions_loaded () > 1) |
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309 warning_with_id ("Octave:reload-forces-clear", |
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310 "reloading %s clears the following functions:", |
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311 oct_file.file_name().c_str ()); |
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312 |
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313 octave_shlib_list::remove (oct_file, do_clear_function); |
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314 } |
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315 |
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316 bool |
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317 octave_dynamic_loader::do_load_oct (const std::string& fcn_name, |
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318 const std::string& file_name, |
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319 bool relative) |
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320 { |
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321 bool retval = false; |
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322 |
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323 octave_shlib oct_file; |
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324 |
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325 unwind_protect::begin_frame ("octave_dynamic_loader::do_load"); |
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326 |
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327 unwind_protect_bool (octave_dynamic_loader::doing_load); |
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328 |
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329 doing_load = true; |
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330 |
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331 void *function |
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332 = octave_shlib_list::search (fcn_name, oct_file, mangle_name); |
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333 |
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334 if (! error_state) |
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335 { |
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336 if (function |
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337 && (! same_file (file_name, oct_file.file_name ()) |
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338 || oct_file.is_out_of_date ())) |
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339 { |
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340 clear (oct_file); |
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341 function = 0; |
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342 } |
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343 |
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344 if (! function) |
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345 { |
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346 std::string oct_file_name = file_name; |
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347 |
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348 if (oct_file_name.empty ()) |
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349 { |
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350 oct_file_name = oct_file_in_path (fcn_name); |
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351 |
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352 if (! oct_file_name.empty ()) |
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353 relative = ! octave_env::absolute_pathname (oct_file_name); |
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354 } |
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355 |
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6323
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356 if (oct_file_name.empty ()) |
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357 { |
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358 if (oct_file.is_relative ()) |
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359 { |
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360 // Can't see this function from current |
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361 // directory, so we should clear it. |
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362 clear (oct_file); |
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363 function = 0; |
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364 } |
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365 } |
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366 else |
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367 { |
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368 oct_file.open (oct_file_name); |
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369 |
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370 if (! error_state) |
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371 { |
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372 if (oct_file) |
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373 { |
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6323
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374 if (relative) |
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375 oct_file.mark_relative (); |
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376 |
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3325
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377 octave_shlib_list::append (oct_file); |
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378 |
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379 function = oct_file.search (fcn_name, mangle_name); |
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380 } |
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381 else |
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382 ::error ("%s is not a valid shared library", |
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383 oct_file_name.c_str ()); |
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3325
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384 } |
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385 } |
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386 } |
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387 } |
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388 |
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389 if (function) |
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390 { |
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391 octave_dld_fcn_installer f |
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5854
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392 = FCN_PTR_CAST (octave_dld_fcn_installer, function); |
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3325
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393 |
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6323
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394 retval = f (oct_file, relative); |
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3656
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395 |
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396 if (! retval) |
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5864
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397 ::error ("failed to install .oct file function `%s'", |
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398 fcn_name.c_str ()); |
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3325
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399 } |
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3655
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400 |
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3325
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401 unwind_protect::run_frame ("octave_dynamic_loader::do_load"); |
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402 |
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403 return retval; |
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404 } |
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405 |
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406 bool |
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5864
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407 octave_dynamic_loader::do_load_mex (const std::string& fcn_name, |
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6323
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408 const std::string& file_name, |
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409 bool relative) |
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5864
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410 { |
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411 bool retval = false; |
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412 |
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413 octave_shlib mex_file; |
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414 |
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415 unwind_protect::begin_frame ("octave_dynamic_loader::do_load"); |
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416 |
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417 unwind_protect_bool (octave_dynamic_loader::doing_load); |
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418 |
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419 doing_load = true; |
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420 |
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6323
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421 std::string mex_file_name = file_name; |
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422 |
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423 if (mex_file_name.empty ()) |
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424 { |
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425 mex_file_name = mex_file_in_path (fcn_name); |
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426 |
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427 if (! mex_file_name.empty ()) |
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428 relative = ! octave_env::absolute_pathname (mex_file_name); |
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429 } |
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5864
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430 |
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431 void *function = 0; |
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432 |
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433 bool have_fmex = false; |
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434 |
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435 if (! mex_file_name.empty ()) |
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436 { |
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437 mex_file.open (mex_file_name); |
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438 |
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439 if (! error_state) |
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440 { |
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441 if (mex_file) |
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442 { |
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443 octave_mex_file_list::append (mex_file); |
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444 |
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445 function = mex_file.search ("mexFunction"); |
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446 |
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447 if (! function) |
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448 { |
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6221
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449 // FIXME -- can we determine this C mangling scheme |
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450 // automatically at run time or configure time? |
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451 |
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452 function = mex_file.search ("_mexFunction"); |
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453 |
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454 if (! function) |
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455 { |
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456 function = mex_file.search (STRINGIFY (F77_FUNC (mexfunction, MEXFUNCTION))); |
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457 if (function) |
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458 have_fmex = true; |
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459 } |
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5864
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460 } |
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461 } |
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462 else |
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463 ::error ("%s is not a valid shared library", |
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464 mex_file_name.c_str ()); |
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465 } |
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466 } |
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467 |
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468 if (function) |
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469 { |
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6323
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470 install_mex_function (function, have_fmex, fcn_name, mex_file, relative); |
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5864
|
471 |
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472 retval = true; |
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473 } |
|
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474 else |
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475 ::error ("failed to install .mex file function `%s'", fcn_name.c_str ()); |
|
|
476 |
|
|
477 unwind_protect::run_frame ("octave_dynamic_loader::do_load"); |
|
|
478 |
|
|
479 return retval; |
|
|
480 } |
|
|
481 |
|
|
482 bool |
|
3523
|
483 octave_dynamic_loader::do_remove (const std::string& fcn_name, octave_shlib& shl) |
|
3325
|
484 { |
|
|
485 bool retval = false; |
|
|
486 |
|
|
487 // We don't need to do anything if this is called because we are in |
|
|
488 // the process of reloading a .oct file that has changed. |
|
|
489 |
|
|
490 if (! doing_load) |
|
|
491 { |
|
|
492 retval = shl.remove (fcn_name); |
|
|
493 |
|
|
494 if (shl.number_of_functions_loaded () == 0) |
|
|
495 octave_shlib_list::remove (shl); |
|
|
496 } |
|
|
497 |
|
|
498 return retval; |
|
|
499 } |
|
|
500 |
|
|
501 bool |
|
5864
|
502 octave_dynamic_loader::load_oct (const std::string& fcn_name, |
|
6323
|
503 const std::string& file_name, |
|
|
504 bool relative) |
|
3325
|
505 { |
|
6323
|
506 return (instance_ok ()) |
|
|
507 ? instance->do_load_oct (fcn_name, file_name, relative) : false; |
|
5864
|
508 } |
|
|
509 |
|
|
510 bool |
|
|
511 octave_dynamic_loader::load_mex (const std::string& fcn_name, |
|
6323
|
512 const std::string& file_name, |
|
|
513 bool relative) |
|
5864
|
514 { |
|
6323
|
515 return (instance_ok ()) |
|
|
516 ? instance->do_load_mex (fcn_name, file_name, relative) : false; |
|
3325
|
517 } |
|
|
518 |
|
|
519 bool |
|
3523
|
520 octave_dynamic_loader::remove (const std::string& fcn_name, octave_shlib& shl) |
|
3325
|
521 { |
|
|
522 return (instance_ok ()) ? instance->do_remove (fcn_name, shl) : false; |
|
2893
|
523 } |
|
707
|
524 |
|
3536
|
525 std::string |
|
3523
|
526 octave_dynamic_loader::mangle_name (const std::string& name) |
|
2894
|
527 { |
|
3222
|
528 #if defined (CXX_PREPENDS_UNDERSCORE) |
|
3523
|
529 std::string retval ("_FS"); |
|
3222
|
530 #else |
|
3523
|
531 std::string retval ("FS"); |
|
3222
|
532 #endif |
|
2894
|
533 retval.append (name); |
|
3842
|
534 retval.append ("_"); |
|
|
535 retval.append (STRINGIFY (CXX_ABI)); |
|
2894
|
536 return retval; |
|
|
537 } |
|
707
|
538 |
|
1
|
539 /* |
|
|
540 ;;; Local Variables: *** |
|
|
541 ;;; mode: C++ *** |
|
|
542 ;;; End: *** |
|
|
543 */ |
