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1 /* |
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2 |
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3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
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4 2002, 2004, 2005, 2006, 2007 John W. Eaton |
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5 |
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6 This file is part of Octave. |
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7 |
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8 Octave is free software; you can redistribute it and/or modify it |
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9 under the terms of the GNU General Public License as published by the |
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10 Free Software Foundation; either version 3 of the License, or (at your |
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11 option) any later version. |
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12 |
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13 Octave is distributed in the hope that it will be useful, but WITHOUT |
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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16 for more details. |
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17 |
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18 You should have received a copy of the GNU General Public License |
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19 along with Octave; see the file COPYING. If not, see |
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20 <http://www.gnu.org/licenses/>. |
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21 |
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22 */ |
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23 |
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240
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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28 #include <list> |
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29 |
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30 #include "oct-env.h" |
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31 #include "oct-time.h" |
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32 #include "file-stat.h" |
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33 |
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34 #include <defaults.h> |
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35 |
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36 #include "defun.h" |
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37 #include "dynamic-ld.h" |
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38 #include "ov-fcn.h" |
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39 #include "ov-dld-fcn.h" |
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40 #include "ov-mex-fcn.h" |
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41 #include "parse.h" |
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42 #include "unwind-prot.h" |
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43 #include "utils.h" |
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44 #include "variables.h" |
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45 |
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46 #define STRINGIFY(s) STRINGIFY1(s) |
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47 #define STRINGIFY1(s) #s |
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48 |
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49 class |
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50 octave_shlib_list |
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51 { |
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52 public: |
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53 |
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54 static void append (const octave_shlib& shl); |
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55 |
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56 static void remove (octave_shlib& shl, octave_shlib::close_hook cl_hook = 0); |
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57 |
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58 static void *search (const std::string& fcn_name, octave_shlib& shl, |
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59 octave_shlib::name_mangler mangler = 0); |
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60 |
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61 private: |
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62 |
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63 octave_shlib_list (void) { } |
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64 |
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65 ~octave_shlib_list (void) { } |
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66 |
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67 void do_append (const octave_shlib& shl); |
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68 |
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69 void do_remove (octave_shlib& shl, octave_shlib::close_hook cl_hook = 0); |
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70 |
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71 void *do_search (const std::string& fcn_name, octave_shlib& shl, |
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72 octave_shlib::name_mangler mangler = 0); |
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73 |
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74 static octave_shlib_list *instance; |
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75 |
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76 static bool instance_ok (void); |
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77 |
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78 // List of libraries we have loaded. |
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79 std::list<octave_shlib> lib_list; |
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80 |
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81 // No copying! |
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82 |
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83 octave_shlib_list (const octave_shlib_list&); |
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84 |
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85 octave_shlib_list& operator = (const octave_shlib_list&); |
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86 }; |
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87 |
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88 octave_shlib_list *octave_shlib_list::instance = 0; |
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89 |
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90 void |
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91 octave_shlib_list::do_append (const octave_shlib& shl) |
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92 { |
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93 lib_list.push_back (shl); |
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94 } |
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95 |
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96 void |
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97 octave_shlib_list::do_remove (octave_shlib& shl, |
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98 octave_shlib::close_hook cl_hook) |
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99 { |
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100 for (std::list<octave_shlib>::iterator p = lib_list.begin (); |
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101 p != lib_list.end (); |
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102 p++) |
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103 { |
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104 if (*p == shl) |
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105 { |
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106 shl.close (cl_hook); |
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107 |
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108 lib_list.erase (p); |
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109 |
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110 break; |
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111 } |
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112 } |
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113 } |
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114 |
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115 void * |
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116 octave_shlib_list::do_search (const std::string& fcn_name, octave_shlib& shl, |
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117 octave_shlib::name_mangler mangler) |
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118 { |
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119 void *function = 0; |
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120 |
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121 shl = octave_shlib (); |
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122 |
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123 for (std::list<octave_shlib>::iterator p = lib_list.begin (); |
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124 p != lib_list.end (); |
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125 p++) |
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126 { |
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127 function = p->search (fcn_name, mangler); |
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128 |
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129 if (function) |
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130 { |
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131 shl = *p; |
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132 |
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133 break; |
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134 } |
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135 } |
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136 |
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137 return function; |
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138 } |
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139 |
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140 bool |
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141 octave_shlib_list::instance_ok (void) |
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142 { |
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143 bool retval = true; |
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144 |
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145 if (! instance) |
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146 instance = new octave_shlib_list (); |
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147 |
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148 if (! instance) |
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149 { |
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150 ::error ("unable to create shared library list object!"); |
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151 |
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152 retval = false; |
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153 } |
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154 |
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155 return retval; |
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156 } |
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157 |
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158 void |
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159 octave_shlib_list::append (const octave_shlib& shl) |
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160 { |
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161 if (instance_ok ()) |
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162 instance->do_append (shl); |
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163 } |
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164 |
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165 void |
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166 octave_shlib_list::remove (octave_shlib& shl, |
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167 octave_shlib::close_hook cl_hook) |
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168 { |
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169 if (instance_ok ()) |
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170 instance->do_remove (shl, cl_hook); |
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171 } |
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172 |
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173 void * |
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174 octave_shlib_list::search (const std::string& fcn_name, octave_shlib& shl, |
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175 octave_shlib::name_mangler mangler) |
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176 { |
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177 return (instance_ok ()) ? instance->do_search (fcn_name, shl, mangler) : 0; |
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178 } |
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179 |
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180 class |
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181 octave_mex_file_list |
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182 { |
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183 public: |
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184 |
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185 static void append (const octave_shlib& shl); |
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186 |
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187 static void remove (octave_shlib& shl, octave_shlib::close_hook cl_hook = 0); |
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188 |
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189 private: |
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190 |
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191 octave_mex_file_list (void) { } |
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192 |
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193 ~octave_mex_file_list (void) { } |
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194 |
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195 void do_append (const octave_shlib& shl); |
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196 |
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197 void do_remove (octave_shlib& shl, octave_shlib::close_hook cl_hook = 0); |
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198 |
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199 static octave_mex_file_list *instance; |
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200 |
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201 static bool instance_ok (void); |
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202 |
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203 // List of libraries we have loaded. |
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204 std::list<octave_shlib> file_list; |
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205 |
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206 // No copying! |
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207 |
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208 octave_mex_file_list (const octave_mex_file_list&); |
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209 |
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210 octave_mex_file_list& operator = (const octave_mex_file_list&); |
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211 }; |
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212 |
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213 octave_mex_file_list *octave_mex_file_list::instance = 0; |
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214 |
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215 void |
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216 octave_mex_file_list::do_append (const octave_shlib& shl) |
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217 { |
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218 file_list.push_back (shl); |
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219 } |
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220 |
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221 void |
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222 octave_mex_file_list::do_remove (octave_shlib& shl, |
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223 octave_shlib::close_hook cl_hook) |
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224 { |
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225 |
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226 for (std::list<octave_shlib>::iterator p = file_list.begin (); |
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227 p != file_list.end (); |
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228 p++) |
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229 { |
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230 if (*p == shl) |
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231 { |
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232 shl.close (cl_hook); |
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233 |
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234 file_list.erase (p); |
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235 |
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236 break; |
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237 } |
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238 } |
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239 } |
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240 |
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241 bool |
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242 octave_mex_file_list::instance_ok (void) |
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243 { |
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244 bool retval = true; |
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245 |
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246 if (! instance) |
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247 instance = new octave_mex_file_list (); |
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248 |
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249 if (! instance) |
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250 { |
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251 ::error ("unable to create shared library list object!"); |
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252 |
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253 retval = false; |
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254 } |
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255 |
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256 return retval; |
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257 } |
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258 |
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259 void |
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260 octave_mex_file_list::append (const octave_shlib& shl) |
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261 { |
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262 if (instance_ok ()) |
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263 instance->do_append (shl); |
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264 } |
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265 |
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266 void |
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267 octave_mex_file_list::remove (octave_shlib& shl, |
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268 octave_shlib::close_hook cl_hook) |
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269 { |
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270 if (instance_ok ()) |
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271 instance->do_remove (shl, cl_hook); |
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272 } |
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273 |
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274 octave_dynamic_loader *octave_dynamic_loader::instance = 0; |
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275 |
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276 bool octave_dynamic_loader::doing_load = false; |
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277 |
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278 bool |
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279 octave_dynamic_loader::instance_ok (void) |
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280 { |
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281 bool retval = true; |
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282 |
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283 if (! instance) |
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284 instance = new octave_dynamic_loader (); |
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285 |
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286 if (! instance) |
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287 { |
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288 ::error ("unable to create dynamic loader object!"); |
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289 |
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290 retval = false; |
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291 } |
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292 |
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293 return retval; |
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294 } |
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295 |
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296 static |
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297 void do_clear_function (const std::string& fcn_name) |
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298 { |
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299 warning_with_id ("Octave:reload-forces-clear", " %s", fcn_name.c_str ()); |
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300 |
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301 symbol_table::clear_user_function (fcn_name); |
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302 } |
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303 |
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304 static void |
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305 clear (octave_shlib& oct_file) |
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306 { |
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307 if (oct_file.number_of_functions_loaded () > 1) |
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308 warning_with_id ("Octave:reload-forces-clear", |
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309 "reloading %s clears the following functions:", |
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310 oct_file.file_name().c_str ()); |
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311 |
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312 octave_shlib_list::remove (oct_file, do_clear_function); |
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313 } |
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314 |
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315 octave_function * |
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316 octave_dynamic_loader::do_load_oct (const std::string& fcn_name, |
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317 const std::string& file_name, |
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318 bool relative) |
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319 { |
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320 octave_function *retval = 0; |
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321 |
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322 octave_shlib oct_file; |
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323 |
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324 unwind_protect::begin_frame ("octave_dynamic_loader::do_load"); |
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325 |
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326 unwind_protect_bool (octave_dynamic_loader::doing_load); |
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327 |
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328 doing_load = true; |
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329 |
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330 void *function |
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331 = octave_shlib_list::search (fcn_name, oct_file, xmangle_name); |
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332 |
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333 if (! error_state) |
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334 { |
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335 if (function |
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336 && (! same_file (file_name, oct_file.file_name ()) |
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337 || oct_file.is_out_of_date ())) |
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338 { |
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339 clear (oct_file); |
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340 function = 0; |
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341 } |
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342 |
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343 if (! function) |
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344 { |
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345 std::string oct_file_name = file_name; |
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346 |
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347 if (oct_file_name.empty ()) |
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348 { |
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349 oct_file_name = oct_file_in_path (fcn_name); |
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350 |
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351 if (! oct_file_name.empty ()) |
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352 relative = ! octave_env::absolute_pathname (oct_file_name); |
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353 } |
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354 |
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355 if (oct_file_name.empty ()) |
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356 { |
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357 if (oct_file.is_relative ()) |
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358 { |
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359 // Can't see this function from current |
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360 // directory, so we should clear it. |
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361 clear (oct_file); |
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362 function = 0; |
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363 } |
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364 } |
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365 else |
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366 { |
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367 oct_file.open (oct_file_name); |
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368 |
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369 if (! error_state) |
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370 { |
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371 if (oct_file) |
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372 { |
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373 if (relative) |
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374 oct_file.mark_relative (); |
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375 |
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376 octave_shlib_list::append (oct_file); |
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377 |
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378 function = oct_file.search (fcn_name, xmangle_name); |
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379 } |
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380 else |
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381 ::error ("%s is not a valid shared library", |
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382 oct_file_name.c_str ()); |
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383 } |
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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 if (function) |
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389 { |
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390 octave_dld_fcn_getter f |
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391 = FCN_PTR_CAST (octave_dld_fcn_getter, function); |
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392 |
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393 retval = f (oct_file, relative); |
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394 |
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395 if (! retval) |
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396 ::error ("failed to install .oct file function `%s'", |
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397 fcn_name.c_str ()); |
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398 } |
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399 |
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400 unwind_protect::run_frame ("octave_dynamic_loader::do_load"); |
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401 |
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402 return retval; |
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403 } |
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404 |
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7336
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405 octave_function * |
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406 octave_dynamic_loader::do_load_mex (const std::string& fcn_name, |
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407 const std::string& file_name, |
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408 bool relative) |
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409 { |
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410 octave_function *retval = 0; |
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411 |
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412 octave_shlib mex_file; |
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413 |
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414 unwind_protect::begin_frame ("octave_dynamic_loader::do_load"); |
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415 |
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416 unwind_protect_bool (octave_dynamic_loader::doing_load); |
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417 |
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418 doing_load = true; |
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419 |
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6323
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420 std::string mex_file_name = file_name; |
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421 |
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422 if (mex_file_name.empty ()) |
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423 { |
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424 mex_file_name = mex_file_in_path (fcn_name); |
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425 |
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426 if (! mex_file_name.empty ()) |
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427 relative = ! octave_env::absolute_pathname (mex_file_name); |
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428 } |
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429 |
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430 void *function = 0; |
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431 |
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432 bool have_fmex = false; |
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433 |
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434 if (! mex_file_name.empty ()) |
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435 { |
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436 mex_file.open (mex_file_name); |
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437 |
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438 if (! error_state) |
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439 { |
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440 if (mex_file) |
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441 { |
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442 octave_mex_file_list::append (mex_file); |
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443 |
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444 function = mex_file.search ("mexFunction"); |
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445 |
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446 if (! function) |
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447 { |
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6221
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448 // FIXME -- can we determine this C mangling scheme |
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449 // automatically at run time or configure time? |
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450 |
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451 function = mex_file.search ("_mexFunction"); |
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452 |
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453 if (! function) |
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454 { |
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455 function = mex_file.search (STRINGIFY (F77_FUNC (mexfunction, MEXFUNCTION))); |
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456 if (function) |
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457 have_fmex = true; |
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458 } |
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5864
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459 } |
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460 } |
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461 else |
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462 ::error ("%s is not a valid shared library", |
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463 mex_file_name.c_str ()); |
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464 } |
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465 } |
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466 |
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467 if (function) |
|
7336
|
468 retval = new octave_mex_function (function, have_fmex, mex_file, fcn_name); |
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5864
|
469 else |
|
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470 ::error ("failed to install .mex file function `%s'", fcn_name.c_str ()); |
|
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471 |
|
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472 unwind_protect::run_frame ("octave_dynamic_loader::do_load"); |
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|
473 |
|
|
474 return retval; |
|
|
475 } |
|
|
476 |
|
|
477 bool |
|
3523
|
478 octave_dynamic_loader::do_remove (const std::string& fcn_name, octave_shlib& shl) |
|
3325
|
479 { |
|
|
480 bool retval = false; |
|
|
481 |
|
|
482 // We don't need to do anything if this is called because we are in |
|
|
483 // the process of reloading a .oct file that has changed. |
|
|
484 |
|
|
485 if (! doing_load) |
|
|
486 { |
|
|
487 retval = shl.remove (fcn_name); |
|
|
488 |
|
|
489 if (shl.number_of_functions_loaded () == 0) |
|
|
490 octave_shlib_list::remove (shl); |
|
|
491 } |
|
|
492 |
|
|
493 return retval; |
|
|
494 } |
|
|
495 |
|
7336
|
496 octave_function * |
|
5864
|
497 octave_dynamic_loader::load_oct (const std::string& fcn_name, |
|
7336
|
498 const std::string& file_name, |
|
|
499 bool relative) |
|
3325
|
500 { |
|
6323
|
501 return (instance_ok ()) |
|
7336
|
502 ? instance->do_load_oct (fcn_name, file_name, relative) : 0; |
|
5864
|
503 } |
|
|
504 |
|
7336
|
505 octave_function * |
|
5864
|
506 octave_dynamic_loader::load_mex (const std::string& fcn_name, |
|
7336
|
507 const std::string& file_name, |
|
|
508 bool relative) |
|
5864
|
509 { |
|
6323
|
510 return (instance_ok ()) |
|
7336
|
511 ? instance->do_load_mex (fcn_name, file_name, relative) : 0; |
|
3325
|
512 } |
|
|
513 |
|
|
514 bool |
|
3523
|
515 octave_dynamic_loader::remove (const std::string& fcn_name, octave_shlib& shl) |
|
3325
|
516 { |
|
|
517 return (instance_ok ()) ? instance->do_remove (fcn_name, shl) : false; |
|
2893
|
518 } |
|
707
|
519 |
|
3536
|
520 std::string |
|
3523
|
521 octave_dynamic_loader::mangle_name (const std::string& name) |
|
2894
|
522 { |
|
3222
|
523 #if defined (CXX_PREPENDS_UNDERSCORE) |
|
3523
|
524 std::string retval ("_FS"); |
|
3222
|
525 #else |
|
3523
|
526 std::string retval ("FS"); |
|
3222
|
527 #endif |
|
2894
|
528 retval.append (name); |
|
3842
|
529 retval.append ("_"); |
|
|
530 retval.append (STRINGIFY (CXX_ABI)); |
|
2894
|
531 return retval; |
|
|
532 } |
|
707
|
533 |
|
7336
|
534 std::string |
|
|
535 octave_dynamic_loader::xmangle_name (const std::string& name) |
|
|
536 { |
|
|
537 #if defined (CXX_PREPENDS_UNDERSCORE) |
|
|
538 std::string retval ("_G"); |
|
|
539 #else |
|
|
540 std::string retval ("G"); |
|
|
541 #endif |
|
|
542 retval.append (name); |
|
|
543 retval.append ("_"); |
|
|
544 retval.append (STRINGIFY (CXX_ABI)); |
|
|
545 return retval; |
|
|
546 } |
|
|
547 |
|
1
|
548 /* |
|
|
549 ;;; Local Variables: *** |
|
|
550 ;;; mode: C++ *** |
|
|
551 ;;; End: *** |
|
|
552 */ |
