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1683
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1 /* |
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2 |
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2847
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3 Copyright (C) 1996, 1997 John W. Eaton |
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1683
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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5307
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19 Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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1683
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21 |
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22 */ |
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23 |
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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 <cassert> |
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4489
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29 #include <cerrno> |
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1683
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30 #include <cstdlib> |
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31 #include <cstring> |
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4221
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32 #include <new> |
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1683
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33 |
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3503
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34 #include <fstream> |
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35 #include <iostream> |
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5765
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36 #include <sstream> |
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1728
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37 #include <string> |
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38 |
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1683
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39 #ifdef HAVE_UNISTD_H |
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2442
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40 #ifdef HAVE_SYS_TYPES_H |
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1683
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41 #include <sys/types.h> |
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2442
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42 #endif |
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1683
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43 #include <unistd.h> |
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44 #endif |
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45 |
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2926
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46 #include "cmd-edit.h" |
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47 #include "file-ops.h" |
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1683
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48 #include "lo-error.h" |
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2370
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49 #include "lo-mappers.h" |
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3020
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50 #include "oct-env.h" |
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4153
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51 #include "quit.h" |
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1755
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52 #include "str-vec.h" |
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1683
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53 |
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2492
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54 #include <defaults.h> |
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1683
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55 #include "defun.h" |
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56 #include "error.h" |
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57 #include "file-io.h" |
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58 #include "input.h" |
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59 #include "lex.h" |
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2492
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60 #include <oct-conf.h> |
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1742
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61 #include "oct-hist.h" |
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2162
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62 #include "oct-map.h" |
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2862
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63 #include "oct-obj.h" |
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1683
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64 #include "pager.h" |
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65 #include "parse.h" |
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66 #include "pathsearch.h" |
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67 #include "procstream.h" |
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2370
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68 #include "ov.h" |
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2985
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69 #include "pt-jump.h" |
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2982
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70 #include "pt-stmt.h" |
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1683
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71 #include "sighandlers.h" |
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72 #include "sysdep.h" |
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2693
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73 #include "syswait.h" |
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1750
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74 #include "toplev.h" |
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1683
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75 #include "unwind-prot.h" |
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76 #include "utils.h" |
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77 #include "variables.h" |
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2492
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78 #include <version.h> |
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79 |
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3020
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80 // TRUE means we are exiting via the builtin exit or quit functions. |
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81 static bool quitting_gracefully = false; |
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1683
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82 |
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4217
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83 // TRUE means we are ready to interpret commands, but not everything |
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84 // is ready for interactive use. |
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85 bool octave_interpreter_ready = false; |
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86 |
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4172
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87 // TRUE means we've processed all the init code and we are good to go. |
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88 bool octave_initialized = false; |
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89 |
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1683
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90 // Current command to execute. |
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91 tree_statement_list *global_command = 0; |
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92 |
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4238
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93 // Pointer to parent function that is currently being evaluated. |
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4748
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94 octave_function *curr_parent_function = 0; |
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4238
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95 |
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5743
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96 octave_call_stack *octave_call_stack::instance = 0; |
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97 |
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98 octave_function * |
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99 octave_call_stack::do_caller (void) |
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100 { |
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101 octave_function *retval = 0; |
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102 |
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103 if (cs.size () > 1) |
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104 { |
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105 iterator p = cs.begin (); |
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106 retval = *++p; |
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107 } |
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108 |
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109 return retval; |
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110 } |
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111 |
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5744
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112 octave_user_script * |
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113 octave_call_stack::do_caller_user_script (void) |
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114 { |
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115 octave_user_script *retval = 0; |
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116 |
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117 for (iterator p = cs.begin (); p != cs.end (); p++) |
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118 { |
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119 octave_function *f = *p; |
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120 |
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121 if (f && f->is_user_script ()) |
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122 { |
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123 retval = dynamic_cast<octave_user_script *> (f); |
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124 break; |
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125 } |
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126 } |
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127 |
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128 return retval; |
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129 } |
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130 |
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5743
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131 octave_user_function * |
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5744
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132 octave_call_stack::do_caller_user_function (void) |
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5743
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133 { |
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134 octave_user_function *retval = 0; |
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135 |
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136 for (iterator p = cs.begin (); p != cs.end (); p++) |
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137 { |
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138 octave_function *f = *p; |
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139 |
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140 if (f && f->is_user_function ()) |
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141 { |
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142 retval = dynamic_cast<octave_user_function *> (f); |
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143 break; |
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144 } |
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145 } |
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146 |
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147 return retval; |
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148 } |
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149 |
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5744
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150 octave_function * |
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151 octave_call_stack::do_caller_user_script_or_function (void) |
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152 { |
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153 octave_function *retval = 0; |
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154 |
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155 for (iterator p = cs.begin (); p != cs.end (); p++) |
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156 { |
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157 octave_function *f = *p; |
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158 |
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159 if (f && (f->is_user_script () || f->is_user_function ())) |
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160 { |
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161 retval = f; |
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162 break; |
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163 } |
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164 } |
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165 |
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166 return retval; |
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167 } |
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168 |
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169 void |
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170 octave_call_stack::unwind_pop_script (void *) |
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171 { |
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172 octave_function *f = top (); |
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173 pop (); |
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174 assert (f && f->is_user_script ()); |
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175 delete f; |
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176 } |
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177 |
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4180
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178 static void |
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179 recover_from_exception (void) |
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180 { |
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181 can_interrupt = true; |
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4182
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182 octave_interrupt_immediately = 0; |
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4180
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183 octave_interrupt_state = 0; |
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5142
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184 octave_signal_caught = 0; |
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4180
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185 octave_allocation_error = 0; |
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186 octave_restore_signal_mask (); |
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187 octave_catch_interrupts (); |
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188 } |
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189 |
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1907
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190 int |
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5189
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191 main_loop (void) |
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1907
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192 { |
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2016
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193 octave_save_signal_mask (); |
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194 |
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3020
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195 can_interrupt = true; |
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1907
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196 |
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5142
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197 octave_signal_hook = octave_signal_handler; |
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4429
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198 octave_interrupt_hook = unwind_protect::run_all; |
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199 octave_bad_alloc_hook = unwind_protect::run_all; |
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200 |
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2554
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201 octave_catch_interrupts (); |
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1907
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202 |
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4172
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203 octave_initialized = true; |
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204 |
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1907
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205 // The big loop. |
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206 |
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4153
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207 int retval = 0; |
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1907
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208 do |
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209 { |
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4180
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210 try |
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1907
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211 { |
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4153
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212 curr_sym_tab = top_level_sym_tab; |
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2620
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213 |
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4318
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214 reset_error_handler (); |
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215 |
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4153
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216 reset_parser (); |
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2620
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217 |
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4753
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218 // This is the same as yyparse in parse.y. |
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219 retval = octave_parse (); |
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2620
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220 |
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4153
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221 if (retval == 0) |
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222 { |
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223 if (global_command) |
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3804
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224 { |
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4153
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225 global_command->eval (); |
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3883
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226 |
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4153
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227 delete global_command; |
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3883
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228 |
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4153
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229 global_command = 0; |
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3883
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230 |
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4171
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231 OCTAVE_QUIT; |
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232 |
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3883
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233 if (! (interactive || forced_interactive)) |
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234 { |
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4207
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235 bool quit = (tree_return_command::returning |
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236 || tree_break_command::breaking); |
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4153
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237 |
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4207
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238 if (tree_return_command::returning) |
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239 tree_return_command::returning = 0; |
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4153
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240 |
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4207
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241 if (tree_break_command::breaking) |
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242 tree_break_command::breaking--; |
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4153
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243 |
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244 if (quit) |
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245 break; |
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246 } |
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247 |
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248 if (error_state) |
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249 { |
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250 if (! (interactive || forced_interactive)) |
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251 { |
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252 // We should exit with a non-zero status. |
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253 retval = 1; |
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254 break; |
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255 } |
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256 } |
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257 else |
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258 { |
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259 if (octave_completion_matches_called) |
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260 octave_completion_matches_called = false; |
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261 else |
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262 command_editor::increment_current_command_number (); |
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3883
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263 } |
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264 } |
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4153
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265 else if (parser_end_of_input) |
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266 break; |
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2620
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267 } |
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4153
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268 } |
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4182
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269 catch (octave_interrupt_exception) |
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4153
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270 { |
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4180
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271 recover_from_exception (); |
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5629
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272 octave_stdout << "\n"; |
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4180
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273 } |
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4181
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274 catch (std::bad_alloc) |
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4180
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275 { |
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276 recover_from_exception (); |
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277 std::cerr |
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6680
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278 << "error: memory exhausted or requested size too large for range of Octave's index type -- trying to return to prompt" |
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279 << std::endl; |
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1907
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280 } |
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281 } |
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282 while (retval == 0); |
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283 |
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284 return retval; |
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285 } |
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286 |
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1683
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287 // Fix up things before exiting. |
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288 |
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289 void |
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3162
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290 clean_up_and_exit (int retval) |
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291 { |
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3216
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292 do_octave_atexit (); |
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1683
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293 |
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5451
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294 sysdep_cleanup (); |
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295 |
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3162
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296 exit (retval == EOF ? 0 : retval); |
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1683
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297 } |
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298 |
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3180
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299 DEFUN (quit, args, nargout, |
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3332
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300 "-*- texinfo -*-\n\ |
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301 @deftypefn {Built-in Function} {} exit (@var{status})\n\ |
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302 @deftypefnx {Built-in Function} {} quit (@var{status})\n\ |
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303 Exit the current Octave session. If the optional integer value\n\ |
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304 @var{status} is supplied, pass that value to the operating system as the\n\ |
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6615
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305 Octave's exit status. The default value is zero.\n\ |
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3333
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306 @end deftypefn") |
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1683
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307 { |
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2086
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308 octave_value_list retval; |
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2068
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309 |
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3180
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310 if (nargout == 0) |
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2068
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311 { |
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3180
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312 int exit_status = 0; |
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313 |
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314 quitting_gracefully = true; |
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1683
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315 |
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3180
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316 if (args.length () > 0) |
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317 { |
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3202
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318 int tmp = args(0).nint_value (); |
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1683
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319 |
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3202
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320 if (! error_state) |
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321 exit_status = tmp; |
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3180
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322 } |
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323 |
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324 clean_up_and_exit (exit_status); |
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2068
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325 } |
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3180
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326 else |
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327 error ("quit: invalid number of output arguments"); |
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2068
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328 |
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1683
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329 return retval; |
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330 } |
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331 |
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332 DEFALIAS (exit, quit); |
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333 |
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1957
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334 DEFUN (warranty, , , |
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3446
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335 "-*- texinfo -*-\n\ |
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336 @deftypefn {Built-in Function} {} warranty ()\n\ |
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337 Describe the conditions for copying and distributing Octave.\n\ |
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338 @end deftypefn") |
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1683
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339 { |
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2086
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340 octave_value_list retval; |
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1683
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341 |
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3922
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342 octave_stdout << "\n" \ |
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343 OCTAVE_NAME_VERSION_AND_COPYRIGHT "\n\ |
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344 \n\ |
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1683
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345 This program is free software; you can redistribute it and/or modify\n\ |
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346 it under the terms of the GNU General Public License as published by\n\ |
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347 the Free Software Foundation; either version 2 of the License, or\n\ |
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348 (at your option) any later version.\n\ |
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349 \n\ |
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350 This program is distributed in the hope that it will be useful,\n\ |
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351 but WITHOUT ANY WARRANTY; without even the implied warranty of\n\ |
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352 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\ |
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353 GNU General Public License for more details.\n\ |
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354 \n\ |
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355 You should have received a copy of the GNU General Public License\n\ |
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356 along with this program. If not, write to the Free Software\n\ |
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5307
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357 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA\n\ |
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358 02110-1301, USA.\n\ |
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1683
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359 \n"; |
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360 |
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361 return retval; |
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362 } |
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363 |
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364 // Execute a shell command. |
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365 |
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1965
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366 static void |
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367 cleanup_iprocstream (void *p) |
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368 { |
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3060
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369 iprocstream *cmd = static_cast<iprocstream *> (p); |
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370 |
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371 octave_child_list::remove (cmd->pid ()); |
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372 |
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373 delete cmd; |
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1965
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374 } |
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375 |
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6316
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376 static int |
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377 wait_for_input (int fid) |
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378 { |
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379 int retval = -1; |
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380 |
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381 #if defined (HAVE_SELECT) |
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382 if (fid >= 0) |
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383 { |
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384 fd_set set; |
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385 |
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386 FD_ZERO (&set); |
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387 FD_SET (fid, &set); |
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388 |
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389 retval = select (FD_SETSIZE, &set, 0, 0, 0); |
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390 } |
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391 #else |
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392 retval = 1; |
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393 #endif |
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394 |
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395 return retval; |
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396 } |
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397 |
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2086
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398 static octave_value_list |
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3523
|
399 run_command_and_return_output (const std::string& cmd_str) |
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2083
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400 { |
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2086
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401 octave_value_list retval; |
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2083
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402 |
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403 iprocstream *cmd = new iprocstream (cmd_str.c_str ()); |
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404 |
|
3060
|
405 if (cmd) |
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2083
|
406 { |
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3060
|
407 unwind_protect::add (cleanup_iprocstream, cmd); |
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408 |
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409 if (*cmd) |
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410 { |
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6316
|
411 int fid = cmd->file_number (); |
|
2095
|
412 |
|
6316
|
413 std::ostringstream output_buf; |
|
4494
|
414 |
|
3060
|
415 char ch; |
|
3147
|
416 |
|
4489
|
417 for (;;) |
|
3147
|
418 { |
|
4489
|
419 if (cmd->get (ch)) |
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420 output_buf.put (ch); |
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|
421 else |
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|
422 { |
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|
423 if (! cmd->eof () && errno == EAGAIN) |
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|
424 { |
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|
425 cmd->clear (); |
|
3147
|
426 |
|
6316
|
427 if (wait_for_input (fid) != 1) |
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|
428 break; |
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4489
|
429 } |
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|
430 else |
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431 break; |
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432 } |
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3147
|
433 } |
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434 |
|
3252
|
435 int cmd_status = cmd->close (); |
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2083
|
436 |
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3060
|
437 if (WIFEXITED (cmd_status)) |
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|
438 cmd_status = WEXITSTATUS (cmd_status); |
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439 else |
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440 cmd_status = 127; |
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2083
|
441 |
|
5659
|
442 retval(0) = (double) cmd_status; |
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5765
|
443 retval(1) = output_buf.str (); |
|
3060
|
444 } |
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445 |
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446 unwind_protect::run (); |
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2083
|
447 } |
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448 else |
|
|
449 error ("unable to start subprocess for `%s'", cmd_str.c_str ()); |
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450 |
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|
451 return retval; |
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|
452 } |
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453 |
|
5285
|
454 enum system_exec_type { et_sync, et_async }; |
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|
455 |
|
1957
|
456 DEFUN (system, args, nargout, |
|
3301
|
457 "-*- texinfo -*-\n\ |
|
|
458 @deftypefn {Built-in Function} {} system (@var{string}, @var{return_output}, @var{type})\n\ |
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|
459 Execute a shell command specified by @var{string}. The second\n\ |
|
|
460 argument is optional. If @var{type} is @code{\"async\"}, the process\n\ |
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|
461 is started in the background and the process id of the child process\n\ |
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|
462 is returned immediately. Otherwise, the process is started, and\n\ |
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|
463 Octave waits until it exits. If @var{type} argument is omitted, a\n\ |
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|
464 value of @code{\"sync\"} is assumed.\n\ |
|
2083
|
465 \n\ |
|
3301
|
466 If two input arguments are given (the actual value of\n\ |
|
|
467 @var{return_output} is irrelevant) and the subprocess is started\n\ |
|
|
468 synchronously, or if @var{system} is called with one input argument and\n\ |
|
|
469 one or more output arguments, the output from the command is returned.\n\ |
|
5097
|
470 Otherwise, if the subprocess is executed synchronously, its output is\n\ |
|
2321
|
471 sent to the standard output. To send the output of a command executed\n\ |
|
3301
|
472 with @var{system} through the pager, use a command like\n\ |
|
2321
|
473 \n\ |
|
3301
|
474 @example\n\ |
|
|
475 disp (system (cmd, 1));\n\ |
|
|
476 @end example\n\ |
|
2321
|
477 \n\ |
|
3301
|
478 @noindent\n\ |
|
2321
|
479 or\n\ |
|
|
480 \n\ |
|
3301
|
481 @example\n\ |
|
|
482 printf (\"%s\n\", system (cmd, 1));\n\ |
|
|
483 @end example\n\ |
|
|
484 \n\ |
|
5659
|
485 The @code{system} function can return two values. The first is the\n\ |
|
|
486 exit status of the command and the second is any output from the\n\ |
|
|
487 command that was written to the standard output stream. For example,\n\ |
|
3301
|
488 \n\ |
|
|
489 @example\n\ |
|
5717
|
490 [status, output] = system (\"echo foo; exit 2\");\n\ |
|
3301
|
491 @end example\n\ |
|
|
492 \n\ |
|
|
493 @noindent\n\ |
|
|
494 will set the variable @code{output} to the string @samp{foo}, and the\n\ |
|
|
495 variable @code{status} to the integer @samp{2}.\n\ |
|
|
496 @end deftypefn") |
|
1683
|
497 { |
|
2086
|
498 octave_value_list retval; |
|
1683
|
499 |
|
3834
|
500 unwind_protect::begin_frame ("Fsystem"); |
|
|
501 |
|
1683
|
502 int nargin = args.length (); |
|
|
503 |
|
2083
|
504 if (nargin > 0 && nargin < 4) |
|
1683
|
505 { |
|
5672
|
506 bool return_output = (nargout > 1 || nargin > 1); |
|
2083
|
507 |
|
3523
|
508 std::string cmd_str = args(0).string_value (); |
|
2083
|
509 |
|
5285
|
510 system_exec_type type = et_sync; |
|
2083
|
511 |
|
|
512 if (! error_state) |
|
|
513 { |
|
|
514 if (nargin > 2) |
|
|
515 { |
|
3523
|
516 std::string type_str = args(2).string_value (); |
|
1683
|
517 |
|
2083
|
518 if (! error_state) |
|
|
519 { |
|
|
520 if (type_str == "sync") |
|
5285
|
521 type = et_sync; |
|
2083
|
522 else if (type_str == "async") |
|
5285
|
523 type = et_async; |
|
2083
|
524 else |
|
|
525 error ("system: third arg must be \"sync\" or \"async\""); |
|
|
526 } |
|
|
527 else |
|
|
528 error ("system: third argument must be a string"); |
|
|
529 } |
|
|
530 } |
|
|
531 else |
|
3523
|
532 error ("system: expecting std::string as first argument"); |
|
1683
|
533 |
|
2083
|
534 if (! error_state) |
|
|
535 { |
|
5285
|
536 if (type == et_async) |
|
2083
|
537 { |
|
6222
|
538 // FIXME -- maybe this should go in sysdep.cc? |
|
4086
|
539 #ifdef HAVE_FORK |
|
2083
|
540 pid_t pid = fork (); |
|
|
541 |
|
|
542 if (pid < 0) |
|
|
543 error ("system: fork failed -- can't create child process"); |
|
|
544 else if (pid == 0) |
|
|
545 { |
|
5775
|
546 // FIXME -- should probably replace this |
|
3273
|
547 // call with something portable. |
|
|
548 |
|
5510
|
549 execl ("/bin/sh", "sh", "-c", cmd_str.c_str (), |
|
|
550 static_cast<void *> (0)); |
|
3273
|
551 |
|
|
552 panic_impossible (); |
|
2083
|
553 } |
|
|
554 else |
|
4254
|
555 retval(0) = pid; |
|
6222
|
556 #elif defined (__WIN32__) |
|
|
557 STARTUPINFO si; |
|
|
558 PROCESS_INFORMATION pi; |
|
|
559 ZeroMemory (&si, sizeof (si)); |
|
|
560 ZeroMemory (&pi, sizeof (pi)); |
|
|
561 OCTAVE_LOCAL_BUFFER (char, xcmd_str, cmd_str.length()+1); |
|
6676
|
562 strcpy (xcmd_str, cmd_str.c_str ()); |
|
6222
|
563 |
|
|
564 if (! CreateProcess (0, xcmd_str, 0, 0, FALSE, 0, 0, 0, &si, &pi)) |
|
|
565 error ("system: CreateProcess failed -- can't create child process"); |
|
|
566 else |
|
|
567 { |
|
|
568 retval(0) = pi.dwProcessId; |
|
|
569 CloseHandle (pi.hProcess); |
|
|
570 CloseHandle (pi.hThread); |
|
|
571 } |
|
4086
|
572 #else |
|
|
573 error ("asynchronous system calls are not supported"); |
|
|
574 #endif |
|
2083
|
575 } |
|
2321
|
576 else if (return_output) |
|
|
577 retval = run_command_and_return_output (cmd_str); |
|
2083
|
578 else |
|
2321
|
579 { |
|
|
580 int status = system (cmd_str.c_str ()); |
|
|
581 |
|
|
582 // The value in status is as returned by waitpid. If |
|
|
583 // the process exited normally, extract the actual exit |
|
|
584 // status of the command. Otherwise, return 127 as a |
|
|
585 // failure code. |
|
|
586 |
|
2693
|
587 if (WIFEXITED (status)) |
|
|
588 status = WEXITSTATUS (status); |
|
2321
|
589 |
|
4233
|
590 retval(0) = status; |
|
2321
|
591 } |
|
2083
|
592 } |
|
1683
|
593 } |
|
|
594 else |
|
5823
|
595 print_usage (); |
|
1683
|
596 |
|
3834
|
597 unwind_protect::run_frame ("Fsystem"); |
|
|
598 |
|
1683
|
599 return retval; |
|
|
600 } |
|
|
601 |
|
|
602 DEFALIAS (shell_cmd, system); |
|
|
603 |
|
5775
|
604 // FIXME -- this should really be static, but that causes |
|
2614
|
605 // problems on some systems. |
|
6680
|
606 std::list<std::string> octave_atexit_functions; |
|
2077
|
607 |
|
|
608 void |
|
|
609 do_octave_atexit (void) |
|
|
610 { |
|
3216
|
611 static bool deja_vu = false; |
|
|
612 |
|
2077
|
613 while (! octave_atexit_functions.empty ()) |
|
|
614 { |
|
6680
|
615 std::string fcn = octave_atexit_functions.front (); |
|
4214
|
616 |
|
6680
|
617 octave_atexit_functions.pop_front (); |
|
2077
|
618 |
|
5237
|
619 reset_error_handler (); |
|
|
620 |
|
4233
|
621 feval (fcn, octave_value_list (), 0); |
|
3215
|
622 |
|
|
623 flush_octave_stdout (); |
|
2077
|
624 } |
|
3216
|
625 |
|
|
626 if (! deja_vu) |
|
|
627 { |
|
|
628 deja_vu = true; |
|
|
629 |
|
6068
|
630 // Do this explicitly so that destructors for mex file objects |
|
|
631 // are called, so that functions registered with mexAtExit are |
|
|
632 // called. |
|
6072
|
633 clear_mex_functions (); |
|
6068
|
634 |
|
3216
|
635 command_editor::restore_terminal_state (); |
|
|
636 |
|
5775
|
637 // FIXME -- is this needed? Can it cause any trouble? |
|
3216
|
638 raw_mode (0); |
|
|
639 |
|
5305
|
640 octave_history_write_timestamp (); |
|
|
641 |
|
3216
|
642 command_history::clean_up_and_save (); |
|
|
643 |
|
|
644 close_files (); |
|
|
645 |
|
|
646 cleanup_tmp_files (); |
|
|
647 |
|
|
648 flush_octave_stdout (); |
|
|
649 |
|
5305
|
650 if (! quitting_gracefully && (interactive || forced_interactive)) |
|
5629
|
651 { |
|
|
652 octave_stdout << "\n"; |
|
|
653 |
|
|
654 // Yes, we want this to be separate from the call to |
|
|
655 // flush_octave_stdout above. |
|
|
656 |
|
|
657 flush_octave_stdout (); |
|
|
658 } |
|
3216
|
659 } |
|
2077
|
660 } |
|
|
661 |
|
6680
|
662 DEFUN (atexit, args, nargout, |
|
3332
|
663 "-*- texinfo -*-\n\ |
|
|
664 @deftypefn {Built-in Function} {} atexit (@var{fcn})\n\ |
|
|
665 Register a function to be called when Octave exits. For example,\n\ |
|
2077
|
666 \n\ |
|
3332
|
667 @example\n\ |
|
|
668 @group\n\ |
|
6620
|
669 function bye_bye ()\n\ |
|
|
670 disp (\"Bye bye\");\n\ |
|
3332
|
671 endfunction\n\ |
|
6620
|
672 atexit (\"bye_bye\");\n\ |
|
3332
|
673 @end group\n\ |
|
|
674 @end example\n\ |
|
|
675 \n\ |
|
|
676 @noindent\n\ |
|
6620
|
677 will print the message \"Bye bye\" when Octave exits.\n\ |
|
6680
|
678 \n\ |
|
|
679 @deftypefnx {Built-in Function} {} atexit (@var{fcn}, @var{flag})\n\ |
|
|
680 Register or unregister a function to be called when Octave exits,\n\ |
|
|
681 depending on @var{flag}. If @var{flag} is true, the function is\n\ |
|
|
682 registered, if @var{flag} is false, it is unregistered. For example,\n\ |
|
|
683 after registering the function @code{bye_bye} as above,\n\ |
|
|
684 \n\ |
|
|
685 @example\n\ |
|
|
686 atexit (\"bye_bye\", false);\n\ |
|
|
687 @end example\n\ |
|
|
688 \n\ |
|
|
689 @noindent\n\ |
|
|
690 will remove the function from the list and Octave will not call\n\ |
|
|
691 the function @code{bye_by} when it exits.\n\ |
|
|
692 \n\ |
|
7001
|
693 Note that @code{atexit} only removes the first occurrence of a function\n\ |
|
6680
|
694 from the list, so if a function was placed in the list multiple\n\ |
|
|
695 times with @code{atexit}, it must also be removed from the list\n\ |
|
|
696 multiple times.\n\ |
|
3333
|
697 @end deftypefn") |
|
2077
|
698 { |
|
2086
|
699 octave_value_list retval; |
|
2077
|
700 |
|
|
701 int nargin = args.length (); |
|
|
702 |
|
6680
|
703 if (nargin == 1 || nargin == 2) |
|
2077
|
704 { |
|
3523
|
705 std::string arg = args(0).string_value (); |
|
2077
|
706 |
|
|
707 if (! error_state) |
|
6680
|
708 { |
|
|
709 bool add_mode = true; |
|
|
710 |
|
|
711 if (nargin == 2) |
|
|
712 { |
|
|
713 add_mode = args(1).bool_value (); |
|
|
714 |
|
|
715 if (error_state) |
|
|
716 error ("atexit: second argument must be a logical value"); |
|
|
717 } |
|
|
718 |
|
|
719 if (! error_state) |
|
|
720 { |
|
|
721 if (add_mode) |
|
|
722 octave_atexit_functions.push_front (arg); |
|
|
723 else |
|
|
724 { |
|
|
725 bool found = false; |
|
|
726 std::list<std::string>::iterator it; |
|
|
727 |
|
|
728 for (std::list<std::string>::iterator p = octave_atexit_functions.begin (); |
|
|
729 p != octave_atexit_functions.end (); p++) |
|
|
730 { |
|
|
731 if (*p == arg) |
|
|
732 { |
|
|
733 octave_atexit_functions.erase (p); |
|
|
734 found = true; |
|
|
735 break; |
|
|
736 } |
|
|
737 } |
|
|
738 |
|
|
739 if (nargout > 0) |
|
|
740 retval(0) = found; |
|
|
741 } |
|
|
742 } |
|
|
743 } |
|
2077
|
744 else |
|
6680
|
745 error ("atexit: argument must be a string"); |
|
2077
|
746 } |
|
|
747 else |
|
5823
|
748 print_usage (); |
|
2077
|
749 |
|
|
750 return retval; |
|
|
751 } |
|
|
752 |
|
2689
|
753 DEFUN (octave_config_info, args, , |
|
3301
|
754 "-*- texinfo -*-\n\ |
|
|
755 @deftypefn {Built-in Function} {} octave_config_info (@var{option})\n\ |
|
|
756 Return a structure containing configuration and installation\n\ |
|
|
757 information for Octave.\n\ |
|
2689
|
758 \n\ |
|
3301
|
759 if @var{option} is a string, return the configuration information for the\n\ |
|
2689
|
760 specified option.\n\ |
|
|
761 \n\ |
|
3301
|
762 @end deftypefn") |
|
2162
|
763 { |
|
2689
|
764 octave_value retval; |
|
|
765 |
|
4128
|
766 #if defined (ENABLE_DYNAMIC_LINKING) |
|
2689
|
767 bool octave_supports_dynamic_linking = true; |
|
|
768 #else |
|
|
769 bool octave_supports_dynamic_linking = false; |
|
|
770 #endif |
|
|
771 |
|
4357
|
772 static bool initialized = false; |
|
|
773 static Octave_map m; |
|
2162
|
774 |
|
6274
|
775 struct conf_info_struct |
|
|
776 { |
|
|
777 bool subst_home; |
|
|
778 const char *key; |
|
|
779 const char *val; |
|
|
780 }; |
|
|
781 |
|
|
782 static const conf_info_struct conf_info[] = |
|
4357
|
783 { |
|
6274
|
784 { false, "ALL_CFLAGS", OCTAVE_CONF_ALL_CFLAGS }, |
|
|
785 { false, "ALL_CXXFLAGS", OCTAVE_CONF_ALL_CXXFLAGS }, |
|
|
786 { false, "ALL_FFLAGS", OCTAVE_CONF_ALL_FFLAGS }, |
|
|
787 { false, "ALL_LDFLAGS", OCTAVE_CONF_ALL_LDFLAGS }, |
|
|
788 { false, "AR", OCTAVE_CONF_AR }, |
|
|
789 { false, "ARFLAGS", OCTAVE_CONF_ARFLAGS }, |
|
|
790 { false, "BLAS_LIBS", OCTAVE_CONF_BLAS_LIBS }, |
|
|
791 { false, "CC", OCTAVE_CONF_CC }, |
|
|
792 { false, "CC_VERSION", OCTAVE_CONF_CC_VERSION }, |
|
|
793 { false, "CFLAGS", OCTAVE_CONF_CFLAGS }, |
|
|
794 { false, "CPICFLAG", OCTAVE_CONF_CPICFLAG }, |
|
|
795 { false, "CPPFLAGS", OCTAVE_CONF_CPPFLAGS }, |
|
|
796 { false, "CURL_LIBS", OCTAVE_CONF_CURL_LIBS }, |
|
|
797 { false, "CXX", OCTAVE_CONF_CXX }, |
|
|
798 { false, "CXXCPP", OCTAVE_CONF_CXXCPP }, |
|
|
799 { false, "CXXFLAGS", OCTAVE_CONF_CXXFLAGS }, |
|
|
800 { false, "CXXPICFLAG", OCTAVE_CONF_CXXPICFLAG }, |
|
|
801 { false, "CXX_VERSION", OCTAVE_CONF_CXX_VERSION }, |
|
|
802 { false, "DEFAULT_PAGER", OCTAVE_DEFAULT_PAGER }, |
|
|
803 { false, "DEFS", OCTAVE_CONF_DEFS }, |
|
|
804 { false, "DLFCN_INCFLAGS", OCTAVE_CONF_DLFCN_INCFLAGS }, |
|
|
805 { false, "DL_LD", OCTAVE_CONF_DL_LD }, |
|
|
806 { false, "DL_LDFLAGS", OCTAVE_CONF_DL_LDFLAGS }, |
|
|
807 { false, "ENABLE_DYNAMIC_LINKING", OCTAVE_CONF_ENABLE_DYNAMIC_LINKING }, |
|
|
808 { false, "EXEEXT", OCTAVE_CONF_EXEEXT }, |
|
|
809 { false, "F2C", OCTAVE_CONF_F2C }, |
|
|
810 { false, "F2CFLAGS", OCTAVE_CONF_F2CFLAGS }, |
|
|
811 { false, "F77", OCTAVE_CONF_F77 }, |
|
|
812 { false, "F77_FLOAT_STORE_FLAG", OCTAVE_CONF_F77_FLOAT_STORE_FLAG }, |
|
|
813 { false, "FC", OCTAVE_CONF_FC }, |
|
|
814 { false, "FFLAGS", OCTAVE_CONF_FFLAGS }, |
|
|
815 { false, "FFTW_LIBS", OCTAVE_CONF_FFTW_LIBS }, |
|
|
816 { false, "FLIBS", OCTAVE_CONF_FLIBS }, |
|
|
817 { false, "FPICFLAG", OCTAVE_CONF_FPICFLAG }, |
|
|
818 { false, "GLPK_LIBS", OCTAVE_CONF_GLPK_LIBS }, |
|
|
819 { false, "INCFLAGS", OCTAVE_CONF_INCFLAGS }, |
|
|
820 { false, "LDFLAGS", OCTAVE_CONF_LDFLAGS }, |
|
|
821 { false, "LD_CXX", OCTAVE_CONF_LD_CXX }, |
|
|
822 { false, "LD_STATIC_FLAG", OCTAVE_CONF_LD_STATIC_FLAG }, |
|
|
823 { false, "LEX", OCTAVE_CONF_LEX }, |
|
|
824 { false, "LEXLIB", OCTAVE_CONF_LEXLIB }, |
|
|
825 { false, "LFLAGS", OCTAVE_CONF_LFLAGS }, |
|
|
826 { false, "LIBCRUFT", OCTAVE_CONF_LIBCRUFT }, |
|
|
827 { false, "LIBDLFCN", OCTAVE_CONF_LIBDLFCN }, |
|
|
828 { false, "LIBEXT", OCTAVE_CONF_LIBEXT }, |
|
|
829 { false, "LIBFLAGS", OCTAVE_CONF_LIBFLAGS }, |
|
|
830 { false, "LIBOCTAVE", OCTAVE_CONF_LIBOCTAVE }, |
|
|
831 { false, "LIBOCTINTERP", OCTAVE_CONF_LIBOCTINTERP }, |
|
|
832 { false, "LIBREADLINE", OCTAVE_CONF_LIBREADLINE }, |
|
|
833 { false, "LIBS", OCTAVE_CONF_LIBS }, |
|
|
834 { false, "LN_S", OCTAVE_CONF_LN_S }, |
|
|
835 { false, "MKOCTFILE_DL_LDFLAGS", OCTAVE_CONF_MKOCTFILE_DL_LDFLAGS }, |
|
|
836 { false, "RANLIB", OCTAVE_CONF_RANLIB }, |
|
|
837 { false, "RDYNAMIC_FLAG", OCTAVE_CONF_RDYNAMIC_FLAG }, |
|
|
838 { false, "RLD_FLAG", OCTAVE_CONF_RLD_FLAG }, |
|
|
839 { false, "SED", OCTAVE_CONF_SED }, |
|
|
840 { false, "SHARED_LIBS", OCTAVE_CONF_SHARED_LIBS }, |
|
|
841 { false, "SHLEXT", OCTAVE_CONF_SHLEXT }, |
|
|
842 { false, "SHLEXT_VER", OCTAVE_CONF_SHLEXT_VER }, |
|
|
843 { false, "SH_LD", OCTAVE_CONF_SH_LD }, |
|
|
844 { false, "SH_LDFLAGS", OCTAVE_CONF_SH_LDFLAGS }, |
|
|
845 { false, "SONAME_FLAGS", OCTAVE_CONF_SONAME_FLAGS }, |
|
|
846 { false, "STATIC_LIBS", OCTAVE_CONF_STATIC_LIBS }, |
|
|
847 { false, "UGLY_DEFS", OCTAVE_CONF_UGLY_DEFS }, |
|
|
848 { false, "USE_64_BIT_IDX_T", OCTAVE_CONF_USE_64_BIT_IDX_T }, |
|
|
849 { false, "XTRA_CFLAGS", OCTAVE_CONF_XTRA_CFLAGS }, |
|
|
850 { false, "XTRA_CXXFLAGS", OCTAVE_CONF_XTRA_CXXFLAGS }, |
|
|
851 { false, "YACC", OCTAVE_CONF_YACC }, |
|
|
852 { false, "YFLAGS", OCTAVE_CONF_YFLAGS }, |
|
|
853 { false, "api_version", OCTAVE_API_VERSION }, |
|
|
854 { true, "archlibdir", OCTAVE_ARCHLIBDIR }, |
|
|
855 { true, "bindir", OCTAVE_BINDIR }, |
|
|
856 { false, "canonical_host_type", OCTAVE_CANONICAL_HOST_TYPE }, |
|
|
857 { false, "config_opts", OCTAVE_CONF_config_opts }, |
|
|
858 { true, "datadir", OCTAVE_DATADIR }, |
|
|
859 { true, "datarootdir", OCTAVE_DATAROOTDIR }, |
|
6276
|
860 { true, "exec_prefix", OCTAVE_EXEC_PREFIX }, |
|
6274
|
861 { true, "fcnfiledir", OCTAVE_FCNFILEDIR }, |
|
|
862 { true, "imagedir", OCTAVE_IMAGEDIR }, |
|
|
863 { true, "includedir", OCTAVE_INCLUDEDIR }, |
|
|
864 { true, "infodir", OCTAVE_INFODIR }, |
|
6276
|
865 { true, "infofile", OCTAVE_INFOFILE }, |
|
6274
|
866 { true, "libdir", OCTAVE_LIBDIR }, |
|
|
867 { true, "libexecdir", OCTAVE_LIBEXECDIR }, |
|
6311
|
868 { true, "localapiarchlibdir", OCTAVE_LOCALAPIARCHLIBDIR }, |
|
6274
|
869 { true, "localapifcnfiledir", OCTAVE_LOCALAPIFCNFILEDIR }, |
|
|
870 { true, "localapioctfiledir", OCTAVE_LOCALAPIOCTFILEDIR }, |
|
|
871 { true, "localarchlibdir", OCTAVE_LOCALARCHLIBDIR }, |
|
|
872 { true, "localfcnfiledir", OCTAVE_LOCALFCNFILEDIR }, |
|
|
873 { true, "localoctfiledir", OCTAVE_LOCALOCTFILEDIR }, |
|
|
874 { true, "localstartupfiledir", OCTAVE_LOCALSTARTUPFILEDIR }, |
|
|
875 { true, "localverarchlibdir", OCTAVE_LOCALVERARCHLIBDIR }, |
|
|
876 { true, "localverfcnfiledir", OCTAVE_LOCALVERFCNFILEDIR }, |
|
|
877 { true, "localveroctfiledir", OCTAVE_LOCALVEROCTFILEDIR }, |
|
|
878 { true, "man1dir", OCTAVE_MAN1DIR }, |
|
|
879 { false, "man1ext", OCTAVE_MAN1EXT }, |
|
|
880 { true, "mandir", OCTAVE_MANDIR }, |
|
|
881 { true, "octfiledir", OCTAVE_OCTFILEDIR }, |
|
|
882 { true, "octincludedir", OCTAVE_OCTINCLUDEDIR }, |
|
|
883 { true, "octlibdir", OCTAVE_OCTLIBDIR }, |
|
6276
|
884 { true, "prefix", OCTAVE_PREFIX }, |
|
6274
|
885 { true, "startupfiledir", OCTAVE_STARTUPFILEDIR }, |
|
|
886 { false, "version", OCTAVE_VERSION }, |
|
|
887 { false, 0, 0 } |
|
4357
|
888 }; |
|
|
889 |
|
|
890 if (! initialized) |
|
|
891 { |
|
4675
|
892 m.assign ("dld", octave_value (octave_supports_dynamic_linking)); |
|
4357
|
893 |
|
4697
|
894 oct_mach_info::float_format ff = oct_mach_info::native_float_format (); |
|
|
895 m.assign ("float_format", |
|
|
896 octave_value (oct_mach_info::float_format_as_string (ff))); |
|
|
897 |
|
|
898 m.assign ("words_big_endian", |
|
|
899 octave_value (oct_mach_info::words_big_endian ())); |
|
|
900 |
|
|
901 m.assign ("words_little_endian", |
|
|
902 octave_value (oct_mach_info::words_little_endian ())); |
|
|
903 |
|
4357
|
904 int i = 0; |
|
4440
|
905 |
|
|
906 while (true) |
|
4357
|
907 { |
|
6274
|
908 const conf_info_struct& elt = conf_info[i++]; |
|
|
909 |
|
|
910 const char *key = elt.key; |
|
4357
|
911 |
|
|
912 if (key) |
|
6274
|
913 { |
|
|
914 if (elt.subst_home) |
|
|
915 m.assign (key, octave_value (subst_octave_home (elt.val))); |
|
|
916 else |
|
|
917 m.assign (key, octave_value (elt.val)); |
|
|
918 } |
|
4357
|
919 else |
|
|
920 break; |
|
|
921 } |
|
|
922 |
|
4691
|
923 bool unix_system = true; |
|
7013
|
924 bool mac_system = false; |
|
4691
|
925 bool windows_system = false; |
|
|
926 |
|
|
927 #if defined (WIN32) |
|
|
928 windows_system = true; |
|
|
929 #if !defined (__CYGWIN__) |
|
|
930 unix_system = false; |
|
|
931 #endif |
|
|
932 #endif |
|
|
933 |
|
7010
|
934 #if defined (__APPLE__) && defined (__MACH__) |
|
|
935 mac_system = true; |
|
|
936 #endif |
|
|
937 |
|
4691
|
938 m.assign ("unix", octave_value (unix_system)); |
|
7010
|
939 m.assign ("mac", octave_value (mac_system)); |
|
4691
|
940 m.assign ("windows", octave_value (windows_system)); |
|
|
941 |
|
4357
|
942 initialized = true; |
|
|
943 } |
|
2162
|
944 |
|
2689
|
945 int nargin = args.length (); |
|
|
946 |
|
|
947 if (nargin == 1) |
|
|
948 { |
|
3523
|
949 std::string arg = args(0).string_value (); |
|
2689
|
950 |
|
|
951 if (! error_state) |
|
4675
|
952 { |
|
|
953 Cell c = m.contents (arg.c_str ()); |
|
5199
|
954 |
|
|
955 if (c.is_empty ()) |
|
|
956 error ("octave_config_info: no info for `%s'", arg.c_str ()); |
|
|
957 else |
|
|
958 retval = c(0); |
|
4675
|
959 } |
|
2689
|
960 } |
|
|
961 else if (nargin == 0) |
|
4233
|
962 retval = m; |
|
2689
|
963 else |
|
5823
|
964 print_usage (); |
|
2689
|
965 |
|
|
966 return retval; |
|
2162
|
967 } |
|
|
968 |
|
1683
|
969 #if defined (__GNUG__) && defined (DEBUG_NEW_DELETE) |
|
2806
|
970 |
|
1683
|
971 int debug_new_delete = 0; |
|
|
972 |
|
|
973 typedef void (*vfp)(void); |
|
|
974 extern vfp __new_handler; |
|
|
975 |
|
|
976 void * |
|
|
977 __builtin_new (size_t sz) |
|
|
978 { |
|
|
979 void *p; |
|
|
980 |
|
|
981 /* malloc (0) is unpredictable; avoid it. */ |
|
|
982 if (sz == 0) |
|
|
983 sz = 1; |
|
2800
|
984 p = malloc (sz); |
|
1683
|
985 while (p == 0) |
|
|
986 { |
|
|
987 (*__new_handler) (); |
|
2800
|
988 p = malloc (sz); |
|
1683
|
989 } |
|
|
990 |
|
|
991 if (debug_new_delete) |
|
5629
|
992 std::cerr << "__builtin_new: " << p << std::endl; |
|
1683
|
993 |
|
|
994 return p; |
|
|
995 } |
|
|
996 |
|
|
997 void |
|
|
998 __builtin_delete (void *ptr) |
|
|
999 { |
|
|
1000 if (debug_new_delete) |
|
5629
|
1001 std::cerr << "__builtin_delete: " << ptr << std::endl; |
|
1683
|
1002 |
|
|
1003 if (ptr) |
|
|
1004 free (ptr); |
|
|
1005 } |
|
2806
|
1006 |
|
1683
|
1007 #endif |
|
|
1008 |
|
|
1009 /* |
|
|
1010 ;;; Local Variables: *** |
|
|
1011 ;;; mode: C++ *** |
|
|
1012 ;;; End: *** |
|
|
1013 */ |
