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update Octave Project Developers copyright for the new year In files that have the "Octave Project Developers" copyright notice, update for 2020.
author John W. Eaton <jwe@octave.org>
date Mon, 06 Jan 2020 22:29:51 -0500
parents b442ec6dda5c
children bd51beb6205e
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1 /*
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2
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3 Copyright (C) 1993-2020 The Octave Project Developers
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4
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5 See the file COPYRIGHT.md in the top-level directory of this distribution
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6 or <https://octave.org/COPYRIGHT.html/>.
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7
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8
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9 This file is part of Octave.
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10
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11 Octave is free software: you can redistribute it and/or modify it
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12 under the terms of the GNU General Public License as published by
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13 the Free Software Foundation, either version 3 of the License, or
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14 (at your option) any later version.
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15
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16 Octave is distributed in the hope that it will be useful, but
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17 WITHOUT ANY WARRANTY; without even the implied warranty of
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18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 GNU General Public License for more details.
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21 You should have received a copy of the GNU General Public License
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22 along with Octave; see the file COPYING. If not, see
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23 <https://www.gnu.org/licenses/>.
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25 */
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26
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27 #if defined (HAVE_CONFIG_H)
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28 # include "config.h"
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29 #endif
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30
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31 #include <csignal>
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32 #include <cstdlib>
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33
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34 #include <iostream>
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35 #include <new>
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36
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37 #if defined (OCTAVE_USE_WINDOWS_API)
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38 # define WIN32_LEAN_AND_MEAN
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39 # include <windows.h>
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40 #endif
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41
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42 #include "child-list.h"
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43 #include "cmd-edit.h"
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44 #include "oct-syscalls.h"
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45 #include "quit.h"
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46 #include "signal-wrappers.h"
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47
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48 #include "defun.h"
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49 #include "error.h"
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50 #include "input.h"
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51 #include "interpreter-private.h"
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52 #include "interpreter.h"
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53 #include "load-save.h"
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54 #include "octave.h"
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55 #include "oct-map.h"
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56 #include "pager.h"
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57 #include "sighandlers.h"
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58 #include "sysdep.h"
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59 #include "utils.h"
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60 #include "variables.h"
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61
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62 namespace octave
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63 {
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64 // Nonzero means we have already printed a message for this series of
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65 // SIGPIPES. We assume that the writer will eventually give up.
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66 int pipe_handler_error_count = 0;
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67
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68 // TRUE means we can be interrupted.
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69 bool can_interrupt = false;
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71 // TRUE means we should try to enter the debugger on SIGINT.
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72 bool Vdebug_on_interrupt = false;
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74 // Allow users to avoid writing octave-workspace for SIGHUP (sent by
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75 // closing gnome-terminal, for example). Note that this variable has
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76 // no effect if Vcrash_dumps_octave_core is FALSE.
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77 static bool Vsighup_dumps_octave_core = true;
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78
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79 // Similar to Vsighup_dumps_octave_core, but for SIGQUIT signal.
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80 static bool Vsigquit_dumps_octave_core = true;
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81
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82 // Similar to Vsighup_dumps_octave_core, but for SIGTERM signal.
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83 static bool Vsigterm_dumps_octave_core = true;
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84
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85 // List of signals we have caught since last call to signal_handler.
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86 static bool *signals_caught = nullptr;
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87
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88 static void
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89 my_friendly_exit (int sig, bool save_vars = true)
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90 {
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91 std::cerr << "fatal: caught signal "
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92 << octave_strsignal_wrapper (sig)
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93 << " -- stopping myself..." << std::endl;
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94
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95 if (save_vars)
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96 dump_octave_core ();
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97
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98 sysdep_cleanup ();
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99
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100 throw exit_exception (1);
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101 }
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102
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103 // Called from octave_quit () to actually do something about the signals
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104 // we have caught.
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105
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106 void
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107 respond_to_pending_signals (void)
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108 {
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109 // The list of signals is relatively short, so we will just go
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110 // linearly through the list.
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111
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112 // Interrupt signals are currently handled separately.
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113
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114 static int sigint;
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115 static const bool have_sigint
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116 = octave_get_sig_number ("SIGINT", &sigint);
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117
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118 static int sigbreak;
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119 static const bool have_sigbreak
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120 = octave_get_sig_number ("SIGBREAK", &sigbreak);
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121
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122 // Termination signals.
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123
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124 static int sighup;
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125 static const bool have_sighup
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126 = octave_get_sig_number ("SIGHUP", &sighup);
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127
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128 static int sigquit;
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129 static const bool have_sigquit
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130 = octave_get_sig_number ("SIGQUIT", &sigquit);
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131
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132 static int sigterm;
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133 static const bool have_sigterm
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134 = octave_get_sig_number ("SIGTERM", &sigterm);
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135
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136 // Alarm signals.
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137
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138 static int sigalrm;
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139 static const bool have_sigalrm
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140 = octave_get_sig_number ("SIGALRM", &sigalrm);
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141
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142 static int sigvtalrm;
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143 static const bool have_sigvtalrm
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144 = octave_get_sig_number ("SIGVTALRM", &sigvtalrm);
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145
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146 // I/O signals.
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147
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148 static int sigio;
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149 static const bool have_sigio
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150 = octave_get_sig_number ("SIGIO", &sigio);
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151
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152 static int siglost;
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153 static const bool have_siglost
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154 = octave_get_sig_number ("SIGLOST", &siglost);
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155
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156 static int sigpipe;
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157 static const bool have_sigpipe
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158 = octave_get_sig_number ("SIGPIPE", &sigpipe);
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159
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160 // Job control signals.
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161
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162 static int sigchld;
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163 static const bool have_sigchld
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164 = octave_get_sig_number ("SIGCHLD", &sigchld);
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165
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166 static int sigcld;
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167 static const bool have_sigcld
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168 = octave_get_sig_number ("SIGCLD", &sigcld);
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169
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170 // Resource limit signals.
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171
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172 static int sigxcpu;
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173 static const bool have_sigxcpu
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174 = octave_get_sig_number ("SIGXCPU", &sigxcpu);
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175
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176 static int sigxfsz;
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177 static const bool have_sigxfsz
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178 = octave_get_sig_number ("SIGXFSZ", &sigxfsz);
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179
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180 // User signals.
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181
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182 static int sigusr1;
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183 static const bool have_sigusr1
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184 = octave_get_sig_number ("SIGUSR1", &sigusr1);
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185
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186 static int sigusr2;
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187 static const bool have_sigusr2
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188 = octave_get_sig_number ("SIGUSR2", &sigusr2);
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189
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190 child_list& kids = __get_child_list__ ("respond_to_pending_signals");
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191
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192 for (int sig = 0; sig < octave_num_signals (); sig++)
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193 {
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194 if (signals_caught[sig])
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195 {
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196 signals_caught[sig] = false;
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197
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198 if ((have_sigchld && sig == sigchld)
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199 || (have_sigcld && sig == sigcld))
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200 {
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201 // FIXME: should we block or ignore?
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202 volatile interrupt_handler saved_interrupt_handler
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203 = ignore_interrupts ();
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204
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205 void *context = octave_block_child ();
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206
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207 kids.wait ();
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208
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209 set_interrupt_handler (saved_interrupt_handler);
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210
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211 octave_unblock_child (context);
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212
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213 kids.reap ();
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214 }
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215 else if (have_sigpipe && sig == sigpipe)
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216 {
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217 std::cerr << "warning: broken pipe" << std::endl;
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218
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219 // Don't loop forever on account of this.
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220 // FIXME: is this really needed? Does it do anything
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221 // useful now?
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222
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223 if (pipe_handler_error_count++ > 100
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224 && octave_interrupt_state >= 0)
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225 octave_interrupt_state++;
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226 }
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227 else if (have_sighup && sig == sighup)
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228 my_friendly_exit (sighup, Vsighup_dumps_octave_core);
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229 else if (have_sigquit && sig == sigquit)
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230 my_friendly_exit (sigquit, Vsigquit_dumps_octave_core);
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231 else if (have_sigterm && sig == sigterm)
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232 my_friendly_exit (sigterm, Vsigterm_dumps_octave_core);
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233 else if ((have_sigalrm && sig == sigalrm)
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234 || (have_sigvtalrm && sig == sigvtalrm)
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235 || (have_sigio && sig == sigio)
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236 || (have_siglost && sig == siglost)
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237 || (have_sigxcpu && sig == sigxcpu)
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238 || (have_sigxfsz && sig == sigxfsz)
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239 || (have_sigusr1 && sig == sigusr1)
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240 || (have_sigusr2 && sig == sigusr2))
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241 std::cerr << "warning: ignoring signal: "
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242 << octave_strsignal_wrapper (sig)
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243 << std::endl;
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244 else if ((have_sigint && sig == sigint)
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245 || (have_sigbreak && sig == sigbreak))
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246 ; // Handled separately; do nothing.
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247 else
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248 std::cerr << "warning: ignoring unexpected signal: "
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249 << octave_strsignal_wrapper (sig)
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250 << std::endl;
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251 }
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252 }
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253 }
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254
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255 sig_handler *
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256 set_signal_handler (int sig, sig_handler *handler, bool restart_syscalls)
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257 {
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258 return octave_set_signal_handler_internal (sig, handler, restart_syscalls);
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259 }
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260
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261 sig_handler *
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262 set_signal_handler (const char *signame, sig_handler *handler,
22407
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263 bool restart_syscalls)
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264 {
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265 return octave_set_signal_handler_by_name (signame, handler,
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266 restart_syscalls);
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267 }
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268
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269 static void
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270 generic_sig_handler (int sig)
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271 {
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272 // FIXME: this function may execute in a separate signal handler or
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273 // signal watcher thread so it should probably be more careful about
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274 // how it accesses global objects.
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275
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276 octave_signal_caught = 1;
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277
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278 signals_caught[sig] = true;
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279
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280 static int sigint;
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281 static const bool have_sigint
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282 = octave_get_sig_number ("SIGINT", &sigint);
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283
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284 static int sigbreak;
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285 static const bool have_sigbreak
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286 = octave_get_sig_number ("SIGBREAK", &sigbreak);
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287
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288 if ((have_sigint && sig == sigint)
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289 || (have_sigbreak && sig == sigbreak))
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290 {
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291 if (! octave_initialized)
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292 exit (1);
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293
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294 if (can_interrupt)
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295 {
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296 octave_signal_caught = 1;
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297 octave_interrupt_state++;
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298 }
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299 }
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300 }
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301
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302 static void
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303 deadly_sig_handler (int sig)
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304 {
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305 std::cerr << "fatal: caught signal "
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306 << octave_strsignal_wrapper (sig)
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307 << " -- stopping myself..." << std::endl;
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308
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309 octave_set_default_signal_handler (sig);
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310
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311 octave_raise_wrapper (sig);
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312 }
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313
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314 static void
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315 fpe_sig_handler (int)
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316 {
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317 // FIXME: is there something better we can do?
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318
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319 std::cerr << "warning: floating point exception" << std::endl;
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320 }
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321
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322 interrupt_handler
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323 catch_interrupts (void)
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324 {
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325 interrupt_handler retval;
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326
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327 retval.int_handler = set_signal_handler ("SIGINT", generic_sig_handler);
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328 retval.brk_handler = set_signal_handler ("SIGBREAK", generic_sig_handler);
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329
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330 return retval;
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331 }
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332
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333 interrupt_handler
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334 ignore_interrupts (void)
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335 {
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336 interrupt_handler retval;
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337
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338 retval.int_handler = set_signal_handler ("SIGINT", SIG_IGN);
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339 retval.brk_handler = set_signal_handler ("SIGBREAK", SIG_IGN);
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340
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341 return retval;
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342 }
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343
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344 interrupt_handler
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345 set_interrupt_handler (const volatile interrupt_handler& h,
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346 bool restart_syscalls)
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347 {
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348 interrupt_handler retval;
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349
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350 retval.int_handler = set_signal_handler ("SIGINT", h.int_handler,
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351 restart_syscalls);
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352
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353 retval.brk_handler = set_signal_handler ("SIGBREAK", h.brk_handler,
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354 restart_syscalls);
2536
1d63e820ee13 [project @ 1996-11-19 20:34:29 by jwe]
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355
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356 return retval;
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357 }
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358
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359 // Install all the handlers for the signals we might care about.
1373
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360
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361 void
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362 install_signal_handlers (void)
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363 {
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364 if (! signals_caught)
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365 signals_caught = new bool [octave_num_signals ()];
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366
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367 for (int i = 0; i < octave_num_signals (); i++)
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368 signals_caught[i] = false;
3162
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369
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370 // Interrupt signals.
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371
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372 catch_interrupts ();
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373
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374 // Program Error signals. These are most likely unrecoverable for
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375 // us.
1446
5135dac66704 [project @ 1995-09-19 22:34:06 by jwe]
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376
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377 set_signal_handler ("SIGABRT", deadly_sig_handler);
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378 set_signal_handler ("SIGBUS", deadly_sig_handler);
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379 set_signal_handler ("SIGEMT", deadly_sig_handler);
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380 set_signal_handler ("SIGILL", deadly_sig_handler);
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381 // SIGIOT is normally another name for SIGABRT.
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382 set_signal_handler ("SIGIOT", deadly_sig_handler);
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383 set_signal_handler ("SIGSEGV", deadly_sig_handler);
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384 set_signal_handler ("SIGSYS", deadly_sig_handler);
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385 set_signal_handler ("SIGTRAP", deadly_sig_handler);
1230
92609e161b29 [project @ 1995-04-10 01:08:57 by jwe]
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386
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387 // Handle SIGFPE separately.
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388
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389 set_signal_handler ("SIGFPE", fpe_sig_handler);
3281
aaaa20d31a5f [project @ 1999-10-13 07:02:46 by jwe]
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diff changeset
390
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391 // Handle other signals for which the default action is to terminate
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392 // the program.
4172
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diff changeset
393
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394 // Termination signals.
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395
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diff changeset
396 set_signal_handler ("SIGHUP", generic_sig_handler);
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diff changeset
397 set_signal_handler ("SIGQUIT", generic_sig_handler);
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diff changeset
398 set_signal_handler ("SIGTERM", generic_sig_handler);
8658
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diff changeset
399
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diff changeset
400 // Alarm signals.
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diff changeset
401
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diff changeset
402 set_signal_handler ("SIGALRM", generic_sig_handler);
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diff changeset
403 set_signal_handler ("SIGVTALRM", generic_sig_handler);
4793
a62215ab8a03 [project @ 2004-02-20 20:59:34 by jwe]
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parents: 4791
diff changeset
404
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405 // I/O signals.
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diff changeset
406
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407 set_signal_handler ("SIGLOST", generic_sig_handler);
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diff changeset
408 set_signal_handler ("SIGPIPE", generic_sig_handler);
4787
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parents: 4675
diff changeset
409
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410 // Job control signals. We only recognize signals about child
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diff changeset
411 // processes.
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diff changeset
412
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diff changeset
413 set_signal_handler ("SIGCHLD", generic_sig_handler);
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diff changeset
414 set_signal_handler ("SIGCLD", generic_sig_handler);
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diff changeset
415
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416 // Resource limit signals.
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diff changeset
417
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418 // FIXME: does it really make sense to try to handle the CPU limit
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419 // signal?
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
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parents:
diff changeset
420
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421 set_signal_handler ("SIGXCPU", generic_sig_handler);
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diff changeset
422 set_signal_handler ("SIGXFSZ", generic_sig_handler);
c5c11b07598a refactor signal handling (bug #52757)
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diff changeset
423
c5c11b07598a refactor signal handling (bug #52757)
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diff changeset
424 // User signals.
2554
f7e3d23f0a8f [project @ 1996-11-21 01:41:57 by jwe]
jwe
parents: 2536
diff changeset
425
22051
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
426 set_signal_handler ("SIGUSR1", generic_sig_handler);
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
427 set_signal_handler ("SIGUSR2", generic_sig_handler);
2705
18395aaeafb7 [project @ 1997-02-20 04:56:43 by jwe]
jwe
parents: 2693
diff changeset
428
24520
c5c11b07598a refactor signal handling (bug #52757)
John W. Eaton <jwe@octave.org>
parents: 24118
diff changeset
429 // This does nothing on Windows systems.
c5c11b07598a refactor signal handling (bug #52757)
John W. Eaton <jwe@octave.org>
parents: 24118
diff changeset
430 octave_create_interrupt_watcher_thread (generic_sig_handler);
22051
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
431 }
635
5338832d2cf6 [project @ 1994-08-23 17:57:20 by jwe]
jwe
parents: 529
diff changeset
432
22051
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
433 static void
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
434 set_sig_struct_field (octave_scalar_map& m, const char *signame)
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
435 {
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
436 int signum;
21941
1d23b75cbcd1 hide signal.h from C++ sources
John W. Eaton <jwe@octave.org>
parents: 21938
diff changeset
437
22051
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
438 // The names in the struct do not include the leading "SIG" prefix.
1
78fd87e624cb [project @ 1993-08-08 01:13:40 by jwe]
jwe
parents:
diff changeset
439
22051
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
440 if (octave_get_sig_number (signame, &signum))
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
441 m.assign (&signame[3], signum);
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
442 }
3174
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe]
jwe
parents: 3162
diff changeset
443
22051
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
444 static octave_scalar_map
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
445 make_sig_struct (void)
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
446 {
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
447 octave_scalar_map m;
3174
390d5e396682 [project @ 1998-05-04 16:36:17 by jwe]
jwe
parents: 3162
diff changeset
448
22051
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
449 set_sig_struct_field (m, "SIGABRT");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
450 set_sig_struct_field (m, "SIGALRM");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
451 set_sig_struct_field (m, "SIGBUS");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
452 set_sig_struct_field (m, "SIGCHLD");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
453 set_sig_struct_field (m, "SIGCLD");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
454 set_sig_struct_field (m, "SIGCONT");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
455 set_sig_struct_field (m, "SIGEMT");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
456 set_sig_struct_field (m, "SIGFPE");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
457 set_sig_struct_field (m, "SIGHUP");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
458 set_sig_struct_field (m, "SIGILL");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
459 set_sig_struct_field (m, "SIGINFO");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
460 set_sig_struct_field (m, "SIGINT");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
461 set_sig_struct_field (m, "SIGIO");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
462 set_sig_struct_field (m, "SIGIOT");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
463 set_sig_struct_field (m, "SIGKILL");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
464 set_sig_struct_field (m, "SIGLOST");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
465 set_sig_struct_field (m, "SIGPIPE");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
466 set_sig_struct_field (m, "SIGPOLL");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
467 set_sig_struct_field (m, "SIGPROF");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
468 set_sig_struct_field (m, "SIGPWR");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
469 set_sig_struct_field (m, "SIGQUIT");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
470 set_sig_struct_field (m, "SIGSEGV");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
471 set_sig_struct_field (m, "SIGSTKFLT");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
472 set_sig_struct_field (m, "SIGSTOP");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
473 set_sig_struct_field (m, "SIGSYS");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
474 set_sig_struct_field (m, "SIGTERM");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
475 set_sig_struct_field (m, "SIGTRAP");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
476 set_sig_struct_field (m, "SIGTSTP");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
477 set_sig_struct_field (m, "SIGTTIN");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
478 set_sig_struct_field (m, "SIGTTOU");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
479 set_sig_struct_field (m, "SIGUNUSED");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
480 set_sig_struct_field (m, "SIGURG");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
481 set_sig_struct_field (m, "SIGUSR1");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
482 set_sig_struct_field (m, "SIGUSR2");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
483 set_sig_struct_field (m, "SIGVTALRM");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
484 set_sig_struct_field (m, "SIGWINCH");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
485 set_sig_struct_field (m, "SIGXCPU");
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
486 set_sig_struct_field (m, "SIGXFSZ");
4294
755f6509bb01 [project @ 2003-01-11 04:01:53 by jwe]
jwe
parents: 4233
diff changeset
487
22051
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
488 return m;
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
489 }
4294
755f6509bb01 [project @ 2003-01-11 04:01:53 by jwe]
jwe
parents: 4233
diff changeset
490 }
755f6509bb01 [project @ 2003-01-11 04:01:53 by jwe]
jwe
parents: 4233
diff changeset
491
5780
cbf717bf8150 [project @ 2006-04-27 20:02:30 by jwe]
jwe
parents: 5775
diff changeset
492 DEFUN (SIG, args, ,
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
493 doc: /* -*- texinfo -*-
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
494 @deftypefn {} {} SIG ()
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
495 Return a structure containing Unix signal names and their defined values.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
496 @end deftypefn */)
5780
cbf717bf8150 [project @ 2006-04-27 20:02:30 by jwe]
jwe
parents: 5775
diff changeset
497 {
20801
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20791
diff changeset
498 if (args.length () != 0)
5823
080c08b192d8 [project @ 2006-05-19 05:32:17 by jwe]
jwe
parents: 5794
diff changeset
499 print_usage ();
5780
cbf717bf8150 [project @ 2006-04-27 20:02:30 by jwe]
jwe
parents: 5775
diff changeset
500
22051
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
501 static octave_scalar_map m = octave::make_sig_struct ();
20801
a542a9bf177e eliminate return statements after calls to print_usage
John W. Eaton <jwe@octave.org>
parents: 20791
diff changeset
502
20939
b17fda023ca6 maint: Use new C++ archetype in more files.
Rik <rik@octave.org>
parents: 20853
diff changeset
503 return ovl (m);
5780
cbf717bf8150 [project @ 2006-04-27 20:02:30 by jwe]
jwe
parents: 5775
diff changeset
504 }
cbf717bf8150 [project @ 2006-04-27 20:02:30 by jwe]
jwe
parents: 5775
diff changeset
505
12827
8c6d71520920 codesprint: new tests for sysdep.cc functions
John W. Eaton <jwe@octave.org>
parents: 11586
diff changeset
506 /*
14429
eff4a5933e28 Update %!tests in src/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents: 14338
diff changeset
507 %!assert (isstruct (SIG ()))
eff4a5933e28 Update %!tests in src/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents: 14338
diff changeset
508 %!assert (! isempty (SIG ()))
eff4a5933e28 Update %!tests in src/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents: 14338
diff changeset
509
eff4a5933e28 Update %!tests in src/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents: 14338
diff changeset
510 %!error SIG (1)
12827
8c6d71520920 codesprint: new tests for sysdep.cc functions
John W. Eaton <jwe@octave.org>
parents: 11586
diff changeset
511 */
8c6d71520920 codesprint: new tests for sysdep.cc functions
John W. Eaton <jwe@octave.org>
parents: 11586
diff changeset
512
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5780
diff changeset
513 DEFUN (debug_on_interrupt, args, nargout,
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
514 doc: /* -*- texinfo -*-
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
515 @deftypefn {} {@var{val} =} debug_on_interrupt ()
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
516 @deftypefnx {} {@var{old_val} =} debug_on_interrupt (@var{new_val})
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
517 @deftypefnx {} {} debug_on_interrupt (@var{new_val}, "local")
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
518 Query or set the internal variable that controls whether Octave will try
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
519 to enter debugging mode when it receives an interrupt signal (typically
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
520 generated with @kbd{C-c}).
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
521
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
522 If a second interrupt signal is received before reaching the debugging mode,
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
523 a normal interrupt will occur.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
524
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
525 When called from inside a function with the @qcode{"local"} option, the
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
526 variable is changed locally for the function and any subroutines it calls.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
527 The original variable value is restored when exiting the function.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
528 @seealso{debug_on_error, debug_on_warning}
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
529 @end deftypefn */)
4449
e2c91da0aa16 [project @ 2003-07-09 02:21:11 by jwe]
jwe
parents: 4429
diff changeset
530 {
22051
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
531 return set_internal_variable (octave::Vdebug_on_interrupt, args, nargout,
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
532 "debug_on_interrupt");
4449
e2c91da0aa16 [project @ 2003-07-09 02:21:11 by jwe]
jwe
parents: 4429
diff changeset
533 }
e2c91da0aa16 [project @ 2003-07-09 02:21:11 by jwe]
jwe
parents: 4429
diff changeset
534
12827
8c6d71520920 codesprint: new tests for sysdep.cc functions
John W. Eaton <jwe@octave.org>
parents: 11586
diff changeset
535 /*
8c6d71520920 codesprint: new tests for sysdep.cc functions
John W. Eaton <jwe@octave.org>
parents: 11586
diff changeset
536 %!test
12832
03f125c0fb7b codesprint: improve tests
John W. Eaton <jwe@octave.org>
parents: 12827
diff changeset
537 %! orig_val = debug_on_interrupt ();
03f125c0fb7b codesprint: improve tests
John W. Eaton <jwe@octave.org>
parents: 12827
diff changeset
538 %! old_val = debug_on_interrupt (! orig_val);
03f125c0fb7b codesprint: improve tests
John W. Eaton <jwe@octave.org>
parents: 12827
diff changeset
539 %! assert (orig_val, old_val);
03f125c0fb7b codesprint: improve tests
John W. Eaton <jwe@octave.org>
parents: 12827
diff changeset
540 %! assert (debug_on_interrupt (), ! orig_val);
03f125c0fb7b codesprint: improve tests
John W. Eaton <jwe@octave.org>
parents: 12827
diff changeset
541 %! debug_on_interrupt (orig_val);
03f125c0fb7b codesprint: improve tests
John W. Eaton <jwe@octave.org>
parents: 12827
diff changeset
542 %! assert (debug_on_interrupt (), orig_val);
14429
eff4a5933e28 Update %!tests in src/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents: 14338
diff changeset
543
eff4a5933e28 Update %!tests in src/ directory with Octave coding conventions.
Rik <octave@nomad.inbox5.com>
parents: 14338
diff changeset
544 %!error (debug_on_interrupt (1, 2))
12827
8c6d71520920 codesprint: new tests for sysdep.cc functions
John W. Eaton <jwe@octave.org>
parents: 11586
diff changeset
545 */
8c6d71520920 codesprint: new tests for sysdep.cc functions
John W. Eaton <jwe@octave.org>
parents: 11586
diff changeset
546
5794
1138ced03f14 [project @ 2006-05-08 20:23:04 by jwe]
jwe
parents: 5780
diff changeset
547 DEFUN (sighup_dumps_octave_core, args, nargout,
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
548 doc: /* -*- texinfo -*-
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
549 @deftypefn {} {@var{val} =} sighup_dumps_octave_core ()
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
550 @deftypefnx {} {@var{old_val} =} sighup_dumps_octave_core (@var{new_val})
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
551 @deftypefnx {} {} sighup_dumps_octave_core (@var{new_val}, "local")
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
552 Query or set the internal variable that controls whether Octave tries
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
553 to save all current variables to the file @file{octave-workspace} if it
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
554 receives a hangup signal.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
555
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
556 When called from inside a function with the @qcode{"local"} option, the
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
557 variable is changed locally for the function and any subroutines it calls.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
558 The original variable value is restored when exiting the function.
112b20240c87 move docstrings in C++ files out of C strings and into comments
John W. Eaton <jwe@octave.org>
parents: 21941
diff changeset
559 @end deftypefn */)
4185
8f6d418d31c3 [project @ 2002-11-15 23:22:03 by jwe]
jwe
parents: 4182
diff changeset
560 {
22051
6db928d06b07 move signal functions into octave namespace
John W. Eaton <jwe@octave.org>
parents: 22049
diff changeset
561 return set_internal_variable (octave::Vsighup_dumps_octave_core,
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562 args, nargout,
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563 "sighup_dumps_octave_core");
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564 }
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565
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566 /*
8c6d71520920 codesprint: new tests for sysdep.cc functions
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567 %!test
12832
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568 %! orig_val = sighup_dumps_octave_core ();
03f125c0fb7b codesprint: improve tests
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569 %! old_val = sighup_dumps_octave_core (! orig_val);
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570 %! assert (orig_val, old_val);
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571 %! assert (sighup_dumps_octave_core (), ! orig_val);
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572 %! sighup_dumps_octave_core (orig_val);
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573 %! assert (sighup_dumps_octave_core (), orig_val);
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574
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575 %!error (sighup_dumps_octave_core (1, 2))
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576 */
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577
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578 DEFUN (sigquit_dumps_octave_core, args, nargout,
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579 doc: /* -*- texinfo -*-
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580 @deftypefn {} {@var{val} =} sigquit_dumps_octave_core ()
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581 @deftypefnx {} {@var{old_val} =} sigquit_dumps_octave_core (@var{new_val})
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582 @deftypefnx {} {} sigquit_dumps_octave_core (@var{new_val}, "local")
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parents: 24118
diff changeset
583 Query or set the internal variable that controls whether Octave tries
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diff changeset
584 to save all current variables to the file @file{octave-workspace} if it
c5c11b07598a refactor signal handling (bug #52757)
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585 receives a quit signal.
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586
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parents: 24118
diff changeset
587 When called from inside a function with the @qcode{"local"} option, the
c5c11b07598a refactor signal handling (bug #52757)
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parents: 24118
diff changeset
588 variable is changed locally for the function and any subroutines it calls.
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diff changeset
589 The original variable value is restored when exiting the function.
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590 @end deftypefn */)
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591 {
c5c11b07598a refactor signal handling (bug #52757)
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592 return set_internal_variable (octave::Vsigquit_dumps_octave_core,
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John W. Eaton <jwe@octave.org>
parents: 24118
diff changeset
593 args, nargout,
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594 "sigquit_dumps_octave_core");
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595 }
c5c11b07598a refactor signal handling (bug #52757)
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parents: 24118
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596
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parents: 24118
diff changeset
597 /*
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diff changeset
598 %!test
c5c11b07598a refactor signal handling (bug #52757)
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diff changeset
599 %! orig_val = sigquit_dumps_octave_core ();
c5c11b07598a refactor signal handling (bug #52757)
John W. Eaton <jwe@octave.org>
parents: 24118
diff changeset
600 %! old_val = sigquit_dumps_octave_core (! orig_val);
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diff changeset
601 %! assert (orig_val, old_val);
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parents: 24118
diff changeset
602 %! assert (sigquit_dumps_octave_core (), ! orig_val);
c5c11b07598a refactor signal handling (bug #52757)
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diff changeset
603 %! sigquit_dumps_octave_core (orig_val);
c5c11b07598a refactor signal handling (bug #52757)
John W. Eaton <jwe@octave.org>
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diff changeset
604 %! assert (sigquit_dumps_octave_core (), orig_val);
c5c11b07598a refactor signal handling (bug #52757)
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diff changeset
605
c5c11b07598a refactor signal handling (bug #52757)
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diff changeset
606 %!error (sigquit_dumps_octave_core (1, 2))
c5c11b07598a refactor signal handling (bug #52757)
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diff changeset
607 */
c5c11b07598a refactor signal handling (bug #52757)
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diff changeset
608
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609 DEFUN (sigterm_dumps_octave_core, args, nargout,
21966
112b20240c87 move docstrings in C++ files out of C strings and into comments
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610 doc: /* -*- texinfo -*-
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diff changeset
611 @deftypefn {} {@var{val} =} sigterm_dumps_octave_core ()
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diff changeset
612 @deftypefnx {} {@var{old_val} =} sigterm_dumps_octave_core (@var{new_val})
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613 @deftypefnx {} {} sigterm_dumps_octave_core (@var{new_val}, "local")
112b20240c87 move docstrings in C++ files out of C strings and into comments
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diff changeset
614 Query or set the internal variable that controls whether Octave tries
112b20240c87 move docstrings in C++ files out of C strings and into comments
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diff changeset
615 to save all current variables to the file @file{octave-workspace} if it
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616 receives a terminate signal.
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617
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diff changeset
618 When called from inside a function with the @qcode{"local"} option, the
112b20240c87 move docstrings in C++ files out of C strings and into comments
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diff changeset
619 variable is changed locally for the function and any subroutines it calls.
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620 The original variable value is restored when exiting the function.
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diff changeset
621 @end deftypefn */)
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622 {
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623 return set_internal_variable (octave::Vsigterm_dumps_octave_core,
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624 args, nargout,
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parents: 22049
diff changeset
625 "sigterm_dumps_octave_core");
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626 }
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627
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628 /*
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629 %!test
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630 %! orig_val = sigterm_dumps_octave_core ();
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631 %! old_val = sigterm_dumps_octave_core (! orig_val);
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632 %! assert (orig_val, old_val);
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633 %! assert (sigterm_dumps_octave_core (), ! orig_val);
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diff changeset
634 %! sigterm_dumps_octave_core (orig_val);
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635 %! assert (sigterm_dumps_octave_core (), orig_val);
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diff changeset
636
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diff changeset
637 %!error (sigterm_dumps_octave_core (1, 2))
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638 */