Mercurial > octave
annotate src/toplev.cc @ 7719:87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Wed, 16 Apr 2008 22:08:15 -0400 |
| parents | 6070c3bd69c4 |
| children | bb614b3883a9 |
| rev | line source |
|---|---|
| 1683 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
| 4 2004, 2005, 2006, 2007 John W. Eaton | |
| 1683 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 1683 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 1683 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 25 #include <config.h> | |
| 26 #endif | |
| 27 | |
| 28 #include <cassert> | |
| 4489 | 29 #include <cerrno> |
| 1683 | 30 #include <cstdlib> |
| 31 #include <cstring> | |
| 4221 | 32 #include <new> |
| 1683 | 33 |
| 3503 | 34 #include <fstream> |
| 35 #include <iostream> | |
| 5765 | 36 #include <sstream> |
| 1728 | 37 #include <string> |
| 38 | |
| 1683 | 39 #ifdef HAVE_UNISTD_H |
| 2442 | 40 #ifdef HAVE_SYS_TYPES_H |
| 1683 | 41 #include <sys/types.h> |
| 2442 | 42 #endif |
| 1683 | 43 #include <unistd.h> |
| 44 #endif | |
| 45 | |
| 2926 | 46 #include "cmd-edit.h" |
| 47 #include "file-ops.h" | |
| 1683 | 48 #include "lo-error.h" |
| 2370 | 49 #include "lo-mappers.h" |
| 3020 | 50 #include "oct-env.h" |
| 4153 | 51 #include "quit.h" |
| 1755 | 52 #include "str-vec.h" |
| 1683 | 53 |
| 2492 | 54 #include <defaults.h> |
| 1683 | 55 #include "defun.h" |
| 56 #include "error.h" | |
| 57 #include "file-io.h" | |
| 58 #include "input.h" | |
| 59 #include "lex.h" | |
| 2492 | 60 #include <oct-conf.h> |
| 1742 | 61 #include "oct-hist.h" |
| 2162 | 62 #include "oct-map.h" |
| 2862 | 63 #include "oct-obj.h" |
| 1683 | 64 #include "pager.h" |
| 65 #include "parse.h" | |
| 66 #include "pathsearch.h" | |
| 67 #include "procstream.h" | |
| 2370 | 68 #include "ov.h" |
| 2985 | 69 #include "pt-jump.h" |
| 2982 | 70 #include "pt-stmt.h" |
| 1683 | 71 #include "sighandlers.h" |
| 72 #include "sysdep.h" | |
| 2693 | 73 #include "syswait.h" |
| 1750 | 74 #include "toplev.h" |
| 1683 | 75 #include "unwind-prot.h" |
| 76 #include "utils.h" | |
| 77 #include "variables.h" | |
| 2492 | 78 #include <version.h> |
| 1683 | 79 |
| 3020 | 80 // TRUE means we are exiting via the builtin exit or quit functions. |
| 81 static bool quitting_gracefully = false; | |
| 1683 | 82 |
| 4217 | 83 // TRUE means we are ready to interpret commands, but not everything |
| 84 // is ready for interactive use. | |
| 85 bool octave_interpreter_ready = false; | |
| 86 | |
| 4172 | 87 // TRUE means we've processed all the init code and we are good to go. |
| 88 bool octave_initialized = false; | |
| 89 | |
| 1683 | 90 // Current command to execute. |
| 91 tree_statement_list *global_command = 0; | |
| 92 | |
| 4238 | 93 // Pointer to parent function that is currently being evaluated. |
| 4748 | 94 octave_function *curr_parent_function = 0; |
| 4238 | 95 |
| 5743 | 96 octave_call_stack *octave_call_stack::instance = 0; |
| 97 | |
| 5744 | 98 octave_user_script * |
| 99 octave_call_stack::do_caller_user_script (void) | |
| 100 { | |
| 101 octave_user_script *retval = 0; | |
| 102 | |
| 103 for (iterator p = cs.begin (); p != cs.end (); p++) | |
| 104 { | |
| 105 octave_function *f = *p; | |
| 106 | |
| 107 if (f && f->is_user_script ()) | |
| 108 { | |
| 109 retval = dynamic_cast<octave_user_script *> (f); | |
| 110 break; | |
| 111 } | |
| 112 } | |
| 113 | |
| 114 return retval; | |
| 115 } | |
| 116 | |
| 5743 | 117 octave_user_function * |
| 5744 | 118 octave_call_stack::do_caller_user_function (void) |
| 5743 | 119 { |
| 120 octave_user_function *retval = 0; | |
| 121 | |
| 122 for (iterator p = cs.begin (); p != cs.end (); p++) | |
| 123 { | |
| 124 octave_function *f = *p; | |
| 125 | |
| 126 if (f && f->is_user_function ()) | |
| 127 { | |
| 128 retval = dynamic_cast<octave_user_function *> (f); | |
| 129 break; | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 return retval; | |
| 134 } | |
| 135 | |
|
7719
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7552
diff
changeset
|
136 octave_user_code * |
|
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7552
diff
changeset
|
137 octave_call_stack::do_caller_user_code (void) |
| 5744 | 138 { |
|
7719
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7552
diff
changeset
|
139 octave_user_code *retval = 0; |
| 5744 | 140 |
| 141 for (iterator p = cs.begin (); p != cs.end (); p++) | |
| 142 { | |
| 143 octave_function *f = *p; | |
| 144 | |
|
7719
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7552
diff
changeset
|
145 if (f && f->is_user_code ()) |
| 5744 | 146 { |
|
7719
87eda1f8faaa
octave_user_code: new base class for octave_user_script and octave_user_function
John W. Eaton <jwe@octave.org>
parents:
7552
diff
changeset
|
147 retval = dynamic_cast<octave_user_code *> (f); |
| 5744 | 148 break; |
| 149 } | |
| 150 } | |
| 151 | |
| 152 return retval; | |
| 153 } | |
| 154 | |
| 155 void | |
| 156 octave_call_stack::unwind_pop_script (void *) | |
| 157 { | |
| 158 octave_function *f = top (); | |
| 159 pop (); | |
| 160 assert (f && f->is_user_script ()); | |
| 161 delete f; | |
| 162 } | |
| 163 | |
| 7202 | 164 void |
| 4180 | 165 recover_from_exception (void) |
| 166 { | |
| 167 can_interrupt = true; | |
| 4182 | 168 octave_interrupt_immediately = 0; |
| 4180 | 169 octave_interrupt_state = 0; |
| 5142 | 170 octave_signal_caught = 0; |
|
7481
78f3811155f7
use exceptions in liboctave error handler
John W. Eaton <jwe@octave.org>
parents:
7409
diff
changeset
|
171 octave_exception_state = octave_no_exception; |
| 4180 | 172 octave_restore_signal_mask (); |
| 173 octave_catch_interrupts (); | |
| 174 } | |
| 175 | |
| 1907 | 176 int |
| 5189 | 177 main_loop (void) |
| 1907 | 178 { |
| 2016 | 179 octave_save_signal_mask (); |
| 180 | |
| 3020 | 181 can_interrupt = true; |
| 1907 | 182 |
| 5142 | 183 octave_signal_hook = octave_signal_handler; |
| 4429 | 184 octave_interrupt_hook = unwind_protect::run_all; |
| 185 octave_bad_alloc_hook = unwind_protect::run_all; | |
| 186 | |
| 2554 | 187 octave_catch_interrupts (); |
| 1907 | 188 |
| 4172 | 189 octave_initialized = true; |
| 190 | |
| 1907 | 191 // The big loop. |
| 192 | |
| 4153 | 193 int retval = 0; |
| 1907 | 194 do |
| 195 { | |
| 4180 | 196 try |
| 1907 | 197 { |
| 7336 | 198 symbol_table::reset_scope (); |
| 2620 | 199 |
| 4318 | 200 reset_error_handler (); |
| 201 | |
| 4153 | 202 reset_parser (); |
| 2620 | 203 |
| 4753 | 204 // This is the same as yyparse in parse.y. |
| 205 retval = octave_parse (); | |
| 2620 | 206 |
| 4153 | 207 if (retval == 0) |
| 208 { | |
| 209 if (global_command) | |
| 3804 | 210 { |
| 4153 | 211 global_command->eval (); |
| 3883 | 212 |
| 4153 | 213 delete global_command; |
| 3883 | 214 |
| 4153 | 215 global_command = 0; |
| 3883 | 216 |
| 4171 | 217 OCTAVE_QUIT; |
| 218 | |
| 3883 | 219 if (! (interactive || forced_interactive)) |
| 220 { | |
| 4207 | 221 bool quit = (tree_return_command::returning |
| 222 || tree_break_command::breaking); | |
| 4153 | 223 |
| 4207 | 224 if (tree_return_command::returning) |
| 225 tree_return_command::returning = 0; | |
| 4153 | 226 |
| 4207 | 227 if (tree_break_command::breaking) |
| 228 tree_break_command::breaking--; | |
| 4153 | 229 |
| 230 if (quit) | |
| 231 break; | |
| 232 } | |
| 233 | |
| 234 if (error_state) | |
| 235 { | |
| 236 if (! (interactive || forced_interactive)) | |
| 237 { | |
| 238 // We should exit with a non-zero status. | |
| 239 retval = 1; | |
| 240 break; | |
| 241 } | |
| 242 } | |
| 243 else | |
| 244 { | |
| 245 if (octave_completion_matches_called) | |
| 246 octave_completion_matches_called = false; | |
| 247 else | |
| 248 command_editor::increment_current_command_number (); | |
| 3883 | 249 } |
| 250 } | |
| 4153 | 251 else if (parser_end_of_input) |
| 252 break; | |
| 2620 | 253 } |
| 4153 | 254 } |
| 4182 | 255 catch (octave_interrupt_exception) |
| 4153 | 256 { |
| 4180 | 257 recover_from_exception (); |
| 5629 | 258 octave_stdout << "\n"; |
| 4180 | 259 } |
| 4181 | 260 catch (std::bad_alloc) |
| 4180 | 261 { |
| 262 recover_from_exception (); | |
| 263 std::cerr | |
| 6680 | 264 << "error: memory exhausted or requested size too large for range of Octave's index type -- trying to return to prompt" |
| 265 << std::endl; | |
| 1907 | 266 } |
| 267 } | |
| 268 while (retval == 0); | |
| 269 | |
| 270 return retval; | |
| 271 } | |
| 272 | |
| 1683 | 273 // Fix up things before exiting. |
| 274 | |
| 275 void | |
| 3162 | 276 clean_up_and_exit (int retval) |
| 277 { | |
| 3216 | 278 do_octave_atexit (); |
| 1683 | 279 |
| 5451 | 280 sysdep_cleanup (); |
| 281 | |
| 3162 | 282 exit (retval == EOF ? 0 : retval); |
| 1683 | 283 } |
| 284 | |
| 3180 | 285 DEFUN (quit, args, nargout, |
| 3332 | 286 "-*- texinfo -*-\n\ |
| 287 @deftypefn {Built-in Function} {} exit (@var{status})\n\ | |
| 288 @deftypefnx {Built-in Function} {} quit (@var{status})\n\ | |
| 289 Exit the current Octave session. If the optional integer value\n\ | |
| 290 @var{status} is supplied, pass that value to the operating system as the\n\ | |
| 6615 | 291 Octave's exit status. The default value is zero.\n\ |
| 3333 | 292 @end deftypefn") |
| 1683 | 293 { |
| 2086 | 294 octave_value_list retval; |
| 2068 | 295 |
| 3180 | 296 if (nargout == 0) |
| 2068 | 297 { |
| 3180 | 298 int exit_status = 0; |
| 299 | |
| 300 quitting_gracefully = true; | |
| 1683 | 301 |
| 3180 | 302 if (args.length () > 0) |
| 303 { | |
| 3202 | 304 int tmp = args(0).nint_value (); |
| 1683 | 305 |
| 3202 | 306 if (! error_state) |
| 307 exit_status = tmp; | |
| 3180 | 308 } |
| 309 | |
| 310 clean_up_and_exit (exit_status); | |
| 2068 | 311 } |
| 3180 | 312 else |
| 313 error ("quit: invalid number of output arguments"); | |
| 2068 | 314 |
| 1683 | 315 return retval; |
| 316 } | |
| 317 | |
| 318 DEFALIAS (exit, quit); | |
| 319 | |
| 1957 | 320 DEFUN (warranty, , , |
| 3446 | 321 "-*- texinfo -*-\n\ |
| 322 @deftypefn {Built-in Function} {} warranty ()\n\ | |
| 323 Describe the conditions for copying and distributing Octave.\n\ | |
| 324 @end deftypefn") | |
| 1683 | 325 { |
| 2086 | 326 octave_value_list retval; |
| 1683 | 327 |
| 3922 | 328 octave_stdout << "\n" \ |
| 329 OCTAVE_NAME_VERSION_AND_COPYRIGHT "\n\ | |
| 330 \n\ | |
| 1683 | 331 This program is free software; you can redistribute it and/or modify\n\ |
| 332 it under the terms of the GNU General Public License as published by\n\ | |
| 7016 | 333 the Free Software Foundation; either version 3 of the License, or\n\ |
| 1683 | 334 (at your option) any later version.\n\ |
| 335 \n\ | |
| 336 This program is distributed in the hope that it will be useful,\n\ | |
| 337 but WITHOUT ANY WARRANTY; without even the implied warranty of\n\ | |
| 338 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n\ | |
| 339 GNU General Public License for more details.\n\ | |
| 340 \n\ | |
| 341 You should have received a copy of the GNU General Public License\n\ | |
| 7016 | 342 along with this program. If not, see <http://www.gnu.org/licenses/>.\n\ |
| 1683 | 343 \n"; |
| 344 | |
| 345 return retval; | |
| 346 } | |
| 347 | |
| 348 // Execute a shell command. | |
| 349 | |
| 1965 | 350 static void |
| 351 cleanup_iprocstream (void *p) | |
| 352 { | |
| 3060 | 353 iprocstream *cmd = static_cast<iprocstream *> (p); |
| 354 | |
| 355 octave_child_list::remove (cmd->pid ()); | |
| 356 | |
| 357 delete cmd; | |
| 1965 | 358 } |
| 359 | |
| 6316 | 360 static int |
| 361 wait_for_input (int fid) | |
| 362 { | |
| 363 int retval = -1; | |
| 364 | |
| 365 #if defined (HAVE_SELECT) | |
| 366 if (fid >= 0) | |
| 367 { | |
| 368 fd_set set; | |
| 369 | |
| 370 FD_ZERO (&set); | |
| 371 FD_SET (fid, &set); | |
| 372 | |
| 373 retval = select (FD_SETSIZE, &set, 0, 0, 0); | |
| 374 } | |
| 375 #else | |
| 376 retval = 1; | |
| 377 #endif | |
| 378 | |
| 379 return retval; | |
| 380 } | |
| 381 | |
| 2086 | 382 static octave_value_list |
| 3523 | 383 run_command_and_return_output (const std::string& cmd_str) |
| 2083 | 384 { |
| 2086 | 385 octave_value_list retval; |
| 2083 | 386 |
| 387 iprocstream *cmd = new iprocstream (cmd_str.c_str ()); | |
| 388 | |
| 3060 | 389 if (cmd) |
| 2083 | 390 { |
| 3060 | 391 unwind_protect::add (cleanup_iprocstream, cmd); |
| 392 | |
| 393 if (*cmd) | |
| 394 { | |
| 6316 | 395 int fid = cmd->file_number (); |
| 2095 | 396 |
| 6316 | 397 std::ostringstream output_buf; |
| 4494 | 398 |
| 3060 | 399 char ch; |
| 3147 | 400 |
| 4489 | 401 for (;;) |
| 3147 | 402 { |
| 4489 | 403 if (cmd->get (ch)) |
| 404 output_buf.put (ch); | |
| 405 else | |
| 406 { | |
| 407 if (! cmd->eof () && errno == EAGAIN) | |
| 408 { | |
| 409 cmd->clear (); | |
| 3147 | 410 |
| 6316 | 411 if (wait_for_input (fid) != 1) |
| 412 break; | |
| 4489 | 413 } |
| 414 else | |
| 415 break; | |
| 416 } | |
| 3147 | 417 } |
| 418 | |
| 3252 | 419 int cmd_status = cmd->close (); |
| 2083 | 420 |
| 3060 | 421 if (WIFEXITED (cmd_status)) |
| 422 cmd_status = WEXITSTATUS (cmd_status); | |
| 423 else | |
| 424 cmd_status = 127; | |
| 2083 | 425 |
| 5659 | 426 retval(0) = (double) cmd_status; |
| 5765 | 427 retval(1) = output_buf.str (); |
| 3060 | 428 } |
| 429 | |
| 430 unwind_protect::run (); | |
| 2083 | 431 } |
| 432 else | |
| 433 error ("unable to start subprocess for `%s'", cmd_str.c_str ()); | |
| 434 | |
| 435 return retval; | |
| 436 } | |
| 437 | |
| 5285 | 438 enum system_exec_type { et_sync, et_async }; |
| 439 | |
| 1957 | 440 DEFUN (system, args, nargout, |
| 3301 | 441 "-*- texinfo -*-\n\ |
| 442 @deftypefn {Built-in Function} {} system (@var{string}, @var{return_output}, @var{type})\n\ | |
| 443 Execute a shell command specified by @var{string}. The second\n\ | |
| 444 argument is optional. If @var{type} is @code{\"async\"}, the process\n\ | |
| 445 is started in the background and the process id of the child process\n\ | |
| 446 is returned immediately. Otherwise, the process is started, and\n\ | |
| 447 Octave waits until it exits. If @var{type} argument is omitted, a\n\ | |
| 448 value of @code{\"sync\"} is assumed.\n\ | |
| 2083 | 449 \n\ |
| 3301 | 450 If two input arguments are given (the actual value of\n\ |
| 451 @var{return_output} is irrelevant) and the subprocess is started\n\ | |
| 452 synchronously, or if @var{system} is called with one input argument and\n\ | |
| 453 one or more output arguments, the output from the command is returned.\n\ | |
| 5097 | 454 Otherwise, if the subprocess is executed synchronously, its output is\n\ |
| 2321 | 455 sent to the standard output. To send the output of a command executed\n\ |
| 3301 | 456 with @var{system} through the pager, use a command like\n\ |
| 2321 | 457 \n\ |
| 3301 | 458 @example\n\ |
| 459 disp (system (cmd, 1));\n\ | |
| 460 @end example\n\ | |
| 2321 | 461 \n\ |
| 3301 | 462 @noindent\n\ |
| 2321 | 463 or\n\ |
| 464 \n\ | |
| 3301 | 465 @example\n\ |
| 466 printf (\"%s\n\", system (cmd, 1));\n\ | |
| 467 @end example\n\ | |
| 468 \n\ | |
| 5659 | 469 The @code{system} function can return two values. The first is the\n\ |
| 470 exit status of the command and the second is any output from the\n\ | |
| 471 command that was written to the standard output stream. For example,\n\ | |
| 3301 | 472 \n\ |
| 473 @example\n\ | |
| 5717 | 474 [status, output] = system (\"echo foo; exit 2\");\n\ |
| 3301 | 475 @end example\n\ |
| 476 \n\ | |
| 477 @noindent\n\ | |
| 478 will set the variable @code{output} to the string @samp{foo}, and the\n\ | |
| 479 variable @code{status} to the integer @samp{2}.\n\ | |
| 480 @end deftypefn") | |
| 1683 | 481 { |
| 2086 | 482 octave_value_list retval; |
| 1683 | 483 |
| 3834 | 484 unwind_protect::begin_frame ("Fsystem"); |
| 485 | |
| 1683 | 486 int nargin = args.length (); |
| 487 | |
| 2083 | 488 if (nargin > 0 && nargin < 4) |
| 1683 | 489 { |
| 5672 | 490 bool return_output = (nargout > 1 || nargin > 1); |
| 2083 | 491 |
| 3523 | 492 std::string cmd_str = args(0).string_value (); |
| 2083 | 493 |
| 5285 | 494 system_exec_type type = et_sync; |
| 2083 | 495 |
| 496 if (! error_state) | |
| 497 { | |
| 498 if (nargin > 2) | |
| 499 { | |
| 3523 | 500 std::string type_str = args(2).string_value (); |
| 1683 | 501 |
| 2083 | 502 if (! error_state) |
| 503 { | |
| 504 if (type_str == "sync") | |
| 5285 | 505 type = et_sync; |
| 2083 | 506 else if (type_str == "async") |
| 5285 | 507 type = et_async; |
| 2083 | 508 else |
| 509 error ("system: third arg must be \"sync\" or \"async\""); | |
| 510 } | |
| 511 else | |
| 512 error ("system: third argument must be a string"); | |
| 513 } | |
| 514 } | |
| 515 else | |
| 3523 | 516 error ("system: expecting std::string as first argument"); |
| 1683 | 517 |
| 2083 | 518 if (! error_state) |
| 519 { | |
| 7104 | 520 #if defined (__WIN32__) && ! defined (__CYGWIN__) |
| 521 // Work around weird double-quote handling on Windows systems. | |
| 522 if (type == et_sync) | |
| 523 cmd_str = "\"" + cmd_str + "\""; | |
| 524 #endif | |
| 525 | |
| 5285 | 526 if (type == et_async) |
| 2083 | 527 { |
| 6222 | 528 // FIXME -- maybe this should go in sysdep.cc? |
| 4086 | 529 #ifdef HAVE_FORK |
| 2083 | 530 pid_t pid = fork (); |
| 531 | |
| 532 if (pid < 0) | |
| 533 error ("system: fork failed -- can't create child process"); | |
| 534 else if (pid == 0) | |
| 535 { | |
| 5775 | 536 // FIXME -- should probably replace this |
| 3273 | 537 // call with something portable. |
| 538 | |
| 5510 | 539 execl ("/bin/sh", "sh", "-c", cmd_str.c_str (), |
| 540 static_cast<void *> (0)); | |
| 3273 | 541 |
| 542 panic_impossible (); | |
| 2083 | 543 } |
| 544 else | |
| 4254 | 545 retval(0) = pid; |
| 6222 | 546 #elif defined (__WIN32__) |
| 547 STARTUPINFO si; | |
| 548 PROCESS_INFORMATION pi; | |
| 549 ZeroMemory (&si, sizeof (si)); | |
| 550 ZeroMemory (&pi, sizeof (pi)); | |
| 551 OCTAVE_LOCAL_BUFFER (char, xcmd_str, cmd_str.length()+1); | |
| 6676 | 552 strcpy (xcmd_str, cmd_str.c_str ()); |
| 6222 | 553 |
| 554 if (! CreateProcess (0, xcmd_str, 0, 0, FALSE, 0, 0, 0, &si, &pi)) | |
| 555 error ("system: CreateProcess failed -- can't create child process"); | |
| 556 else | |
| 557 { | |
| 558 retval(0) = pi.dwProcessId; | |
| 559 CloseHandle (pi.hProcess); | |
| 560 CloseHandle (pi.hThread); | |
| 561 } | |
| 4086 | 562 #else |
| 563 error ("asynchronous system calls are not supported"); | |
| 564 #endif | |
| 2083 | 565 } |
| 2321 | 566 else if (return_output) |
| 567 retval = run_command_and_return_output (cmd_str); | |
| 2083 | 568 else |
| 2321 | 569 { |
| 570 int status = system (cmd_str.c_str ()); | |
| 571 | |
| 572 // The value in status is as returned by waitpid. If | |
| 573 // the process exited normally, extract the actual exit | |
| 574 // status of the command. Otherwise, return 127 as a | |
| 575 // failure code. | |
| 576 | |
| 2693 | 577 if (WIFEXITED (status)) |
| 578 status = WEXITSTATUS (status); | |
| 2321 | 579 |
| 4233 | 580 retval(0) = status; |
| 2321 | 581 } |
| 2083 | 582 } |
| 1683 | 583 } |
| 584 else | |
| 5823 | 585 print_usage (); |
| 1683 | 586 |
| 3834 | 587 unwind_protect::run_frame ("Fsystem"); |
| 588 | |
| 1683 | 589 return retval; |
| 590 } | |
| 591 | |
| 592 DEFALIAS (shell_cmd, system); | |
| 593 | |
| 5775 | 594 // FIXME -- this should really be static, but that causes |
| 2614 | 595 // problems on some systems. |
| 6680 | 596 std::list<std::string> octave_atexit_functions; |
| 2077 | 597 |
| 598 void | |
| 599 do_octave_atexit (void) | |
| 600 { | |
| 3216 | 601 static bool deja_vu = false; |
| 602 | |
| 2077 | 603 while (! octave_atexit_functions.empty ()) |
| 604 { | |
| 6680 | 605 std::string fcn = octave_atexit_functions.front (); |
| 4214 | 606 |
| 6680 | 607 octave_atexit_functions.pop_front (); |
| 2077 | 608 |
| 5237 | 609 reset_error_handler (); |
| 610 | |
| 4233 | 611 feval (fcn, octave_value_list (), 0); |
| 3215 | 612 |
| 613 flush_octave_stdout (); | |
| 2077 | 614 } |
| 3216 | 615 |
| 616 if (! deja_vu) | |
| 617 { | |
| 618 deja_vu = true; | |
| 619 | |
| 6068 | 620 // Do this explicitly so that destructors for mex file objects |
| 621 // are called, so that functions registered with mexAtExit are | |
| 622 // called. | |
| 6072 | 623 clear_mex_functions (); |
| 6068 | 624 |
| 3216 | 625 command_editor::restore_terminal_state (); |
| 626 | |
| 5775 | 627 // FIXME -- is this needed? Can it cause any trouble? |
| 3216 | 628 raw_mode (0); |
| 629 | |
| 5305 | 630 octave_history_write_timestamp (); |
| 631 | |
| 3216 | 632 command_history::clean_up_and_save (); |
| 633 | |
| 634 close_files (); | |
| 635 | |
| 636 cleanup_tmp_files (); | |
| 637 | |
| 638 flush_octave_stdout (); | |
| 639 | |
| 5305 | 640 if (! quitting_gracefully && (interactive || forced_interactive)) |
| 5629 | 641 { |
| 642 octave_stdout << "\n"; | |
| 643 | |
| 644 // Yes, we want this to be separate from the call to | |
| 645 // flush_octave_stdout above. | |
| 646 | |
| 647 flush_octave_stdout (); | |
| 648 } | |
| 3216 | 649 } |
| 2077 | 650 } |
| 651 | |
| 7409 | 652 void |
| 653 octave_add_atexit_function (const std::string& fname) | |
| 654 { | |
| 655 octave_atexit_functions.push_front (fname); | |
| 656 } | |
| 657 | |
| 658 bool | |
| 659 octave_remove_atexit_function (const std::string& fname) | |
| 660 { | |
| 661 bool found = false; | |
| 662 | |
| 663 for (std::list<std::string>::iterator p = octave_atexit_functions.begin (); | |
| 664 p != octave_atexit_functions.end (); p++) | |
| 665 { | |
| 666 if (*p == fname) | |
| 667 { | |
| 668 octave_atexit_functions.erase (p); | |
| 669 found = true; | |
| 670 break; | |
| 671 } | |
| 672 } | |
| 673 | |
| 674 return found; | |
| 675 } | |
| 676 | |
| 677 | |
| 6680 | 678 DEFUN (atexit, args, nargout, |
| 3332 | 679 "-*- texinfo -*-\n\ |
| 680 @deftypefn {Built-in Function} {} atexit (@var{fcn})\n\ | |
| 681 Register a function to be called when Octave exits. For example,\n\ | |
| 2077 | 682 \n\ |
| 3332 | 683 @example\n\ |
| 684 @group\n\ | |
| 6620 | 685 function bye_bye ()\n\ |
| 686 disp (\"Bye bye\");\n\ | |
| 3332 | 687 endfunction\n\ |
| 6620 | 688 atexit (\"bye_bye\");\n\ |
| 3332 | 689 @end group\n\ |
| 690 @end example\n\ | |
| 691 \n\ | |
| 692 @noindent\n\ | |
| 6620 | 693 will print the message \"Bye bye\" when Octave exits.\n\ |
| 6680 | 694 \n\ |
| 695 @deftypefnx {Built-in Function} {} atexit (@var{fcn}, @var{flag})\n\ | |
| 696 Register or unregister a function to be called when Octave exits,\n\ | |
| 697 depending on @var{flag}. If @var{flag} is true, the function is\n\ | |
| 698 registered, if @var{flag} is false, it is unregistered. For example,\n\ | |
| 699 after registering the function @code{bye_bye} as above,\n\ | |
| 700 \n\ | |
| 701 @example\n\ | |
| 702 atexit (\"bye_bye\", false);\n\ | |
| 703 @end example\n\ | |
| 704 \n\ | |
| 705 @noindent\n\ | |
| 706 will remove the function from the list and Octave will not call\n\ | |
| 707 the function @code{bye_by} when it exits.\n\ | |
| 708 \n\ | |
| 7001 | 709 Note that @code{atexit} only removes the first occurrence of a function\n\ |
| 6680 | 710 from the list, so if a function was placed in the list multiple\n\ |
| 711 times with @code{atexit}, it must also be removed from the list\n\ | |
| 712 multiple times.\n\ | |
| 3333 | 713 @end deftypefn") |
| 2077 | 714 { |
| 2086 | 715 octave_value_list retval; |
| 2077 | 716 |
| 717 int nargin = args.length (); | |
| 718 | |
| 6680 | 719 if (nargin == 1 || nargin == 2) |
| 2077 | 720 { |
| 3523 | 721 std::string arg = args(0).string_value (); |
| 2077 | 722 |
| 723 if (! error_state) | |
| 6680 | 724 { |
| 725 bool add_mode = true; | |
| 726 | |
| 727 if (nargin == 2) | |
| 728 { | |
| 729 add_mode = args(1).bool_value (); | |
| 730 | |
| 731 if (error_state) | |
| 732 error ("atexit: second argument must be a logical value"); | |
| 733 } | |
| 734 | |
| 735 if (! error_state) | |
| 736 { | |
| 737 if (add_mode) | |
| 7409 | 738 octave_add_atexit_function (arg); |
| 6680 | 739 else |
| 740 { | |
| 7409 | 741 bool found = octave_remove_atexit_function (arg); |
| 6680 | 742 |
| 743 if (nargout > 0) | |
| 744 retval(0) = found; | |
| 745 } | |
| 746 } | |
| 747 } | |
| 2077 | 748 else |
| 6680 | 749 error ("atexit: argument must be a string"); |
| 2077 | 750 } |
| 751 else | |
| 5823 | 752 print_usage (); |
| 2077 | 753 |
| 754 return retval; | |
| 755 } | |
| 756 | |
| 2689 | 757 DEFUN (octave_config_info, args, , |
| 3301 | 758 "-*- texinfo -*-\n\ |
| 759 @deftypefn {Built-in Function} {} octave_config_info (@var{option})\n\ | |
| 760 Return a structure containing configuration and installation\n\ | |
| 761 information for Octave.\n\ | |
| 2689 | 762 \n\ |
| 3301 | 763 if @var{option} is a string, return the configuration information for the\n\ |
| 2689 | 764 specified option.\n\ |
| 765 \n\ | |
| 3301 | 766 @end deftypefn") |
| 2162 | 767 { |
| 2689 | 768 octave_value retval; |
| 769 | |
| 4128 | 770 #if defined (ENABLE_DYNAMIC_LINKING) |
| 2689 | 771 bool octave_supports_dynamic_linking = true; |
| 772 #else | |
| 773 bool octave_supports_dynamic_linking = false; | |
| 774 #endif | |
| 775 | |
| 4357 | 776 static bool initialized = false; |
| 777 static Octave_map m; | |
| 2162 | 778 |
| 6274 | 779 struct conf_info_struct |
| 780 { | |
| 781 bool subst_home; | |
| 782 const char *key; | |
| 783 const char *val; | |
| 784 }; | |
| 785 | |
| 786 static const conf_info_struct conf_info[] = | |
| 4357 | 787 { |
| 6274 | 788 { false, "ALL_CFLAGS", OCTAVE_CONF_ALL_CFLAGS }, |
| 789 { false, "ALL_CXXFLAGS", OCTAVE_CONF_ALL_CXXFLAGS }, | |
| 790 { false, "ALL_FFLAGS", OCTAVE_CONF_ALL_FFLAGS }, | |
| 791 { false, "ALL_LDFLAGS", OCTAVE_CONF_ALL_LDFLAGS }, | |
| 792 { false, "AR", OCTAVE_CONF_AR }, | |
| 793 { false, "ARFLAGS", OCTAVE_CONF_ARFLAGS }, | |
| 794 { false, "BLAS_LIBS", OCTAVE_CONF_BLAS_LIBS }, | |
| 795 { false, "CC", OCTAVE_CONF_CC }, | |
| 796 { false, "CC_VERSION", OCTAVE_CONF_CC_VERSION }, | |
| 797 { false, "CFLAGS", OCTAVE_CONF_CFLAGS }, | |
| 798 { false, "CPICFLAG", OCTAVE_CONF_CPICFLAG }, | |
| 799 { false, "CPPFLAGS", OCTAVE_CONF_CPPFLAGS }, | |
| 800 { false, "CURL_LIBS", OCTAVE_CONF_CURL_LIBS }, | |
| 801 { false, "CXX", OCTAVE_CONF_CXX }, | |
| 802 { false, "CXXCPP", OCTAVE_CONF_CXXCPP }, | |
| 803 { false, "CXXFLAGS", OCTAVE_CONF_CXXFLAGS }, | |
| 804 { false, "CXXPICFLAG", OCTAVE_CONF_CXXPICFLAG }, | |
| 805 { false, "CXX_VERSION", OCTAVE_CONF_CXX_VERSION }, | |
| 806 { false, "DEFAULT_PAGER", OCTAVE_DEFAULT_PAGER }, | |
| 807 { false, "DEFS", OCTAVE_CONF_DEFS }, | |
| 808 { false, "DL_LD", OCTAVE_CONF_DL_LD }, | |
| 809 { false, "DL_LDFLAGS", OCTAVE_CONF_DL_LDFLAGS }, | |
| 810 { false, "ENABLE_DYNAMIC_LINKING", OCTAVE_CONF_ENABLE_DYNAMIC_LINKING }, | |
| 811 { false, "EXEEXT", OCTAVE_CONF_EXEEXT }, | |
| 812 { false, "F2C", OCTAVE_CONF_F2C }, | |
| 813 { false, "F2CFLAGS", OCTAVE_CONF_F2CFLAGS }, | |
| 814 { false, "F77", OCTAVE_CONF_F77 }, | |
| 815 { false, "F77_FLOAT_STORE_FLAG", OCTAVE_CONF_F77_FLOAT_STORE_FLAG }, | |
| 816 { false, "FC", OCTAVE_CONF_FC }, | |
| 817 { false, "FFLAGS", OCTAVE_CONF_FFLAGS }, | |
| 818 { false, "FFTW_LIBS", OCTAVE_CONF_FFTW_LIBS }, | |
| 819 { false, "FLIBS", OCTAVE_CONF_FLIBS }, | |
| 820 { false, "FPICFLAG", OCTAVE_CONF_FPICFLAG }, | |
| 821 { false, "GLPK_LIBS", OCTAVE_CONF_GLPK_LIBS }, | |
| 7361 | 822 { false, "GNUPLOT", OCTAVE_CONF_GNUPLOT }, |
| 6274 | 823 { false, "INCFLAGS", OCTAVE_CONF_INCFLAGS }, |
| 824 { false, "LDFLAGS", OCTAVE_CONF_LDFLAGS }, | |
| 825 { false, "LD_CXX", OCTAVE_CONF_LD_CXX }, | |
| 826 { false, "LD_STATIC_FLAG", OCTAVE_CONF_LD_STATIC_FLAG }, | |
| 827 { false, "LEX", OCTAVE_CONF_LEX }, | |
| 828 { false, "LEXLIB", OCTAVE_CONF_LEXLIB }, | |
| 829 { false, "LFLAGS", OCTAVE_CONF_LFLAGS }, | |
| 830 { false, "LIBCRUFT", OCTAVE_CONF_LIBCRUFT }, | |
| 831 { false, "LIBEXT", OCTAVE_CONF_LIBEXT }, | |
| 832 { false, "LIBFLAGS", OCTAVE_CONF_LIBFLAGS }, | |
| 833 { false, "LIBOCTAVE", OCTAVE_CONF_LIBOCTAVE }, | |
| 834 { false, "LIBOCTINTERP", OCTAVE_CONF_LIBOCTINTERP }, | |
| 835 { false, "LIBREADLINE", OCTAVE_CONF_LIBREADLINE }, | |
| 836 { false, "LIBS", OCTAVE_CONF_LIBS }, | |
| 837 { false, "LN_S", OCTAVE_CONF_LN_S }, | |
| 838 { false, "MKOCTFILE_DL_LDFLAGS", OCTAVE_CONF_MKOCTFILE_DL_LDFLAGS }, | |
| 839 { false, "RANLIB", OCTAVE_CONF_RANLIB }, | |
| 840 { false, "RDYNAMIC_FLAG", OCTAVE_CONF_RDYNAMIC_FLAG }, | |
| 841 { false, "RLD_FLAG", OCTAVE_CONF_RLD_FLAG }, | |
| 842 { false, "SED", OCTAVE_CONF_SED }, | |
| 843 { false, "SHARED_LIBS", OCTAVE_CONF_SHARED_LIBS }, | |
| 844 { false, "SHLEXT", OCTAVE_CONF_SHLEXT }, | |
| 845 { false, "SHLEXT_VER", OCTAVE_CONF_SHLEXT_VER }, | |
| 846 { false, "SH_LD", OCTAVE_CONF_SH_LD }, | |
| 847 { false, "SH_LDFLAGS", OCTAVE_CONF_SH_LDFLAGS }, | |
| 848 { false, "SONAME_FLAGS", OCTAVE_CONF_SONAME_FLAGS }, | |
| 849 { false, "STATIC_LIBS", OCTAVE_CONF_STATIC_LIBS }, | |
| 850 { false, "UGLY_DEFS", OCTAVE_CONF_UGLY_DEFS }, | |
| 851 { false, "USE_64_BIT_IDX_T", OCTAVE_CONF_USE_64_BIT_IDX_T }, | |
| 852 { false, "XTRA_CFLAGS", OCTAVE_CONF_XTRA_CFLAGS }, | |
| 853 { false, "XTRA_CXXFLAGS", OCTAVE_CONF_XTRA_CXXFLAGS }, | |
| 854 { false, "YACC", OCTAVE_CONF_YACC }, | |
| 855 { false, "YFLAGS", OCTAVE_CONF_YFLAGS }, | |
| 856 { false, "api_version", OCTAVE_API_VERSION }, | |
| 857 { true, "archlibdir", OCTAVE_ARCHLIBDIR }, | |
| 858 { true, "bindir", OCTAVE_BINDIR }, | |
| 859 { false, "canonical_host_type", OCTAVE_CANONICAL_HOST_TYPE }, | |
| 860 { false, "config_opts", OCTAVE_CONF_config_opts }, | |
| 861 { true, "datadir", OCTAVE_DATADIR }, | |
| 862 { true, "datarootdir", OCTAVE_DATAROOTDIR }, | |
| 6276 | 863 { true, "exec_prefix", OCTAVE_EXEC_PREFIX }, |
| 6274 | 864 { true, "fcnfiledir", OCTAVE_FCNFILEDIR }, |
| 865 { true, "imagedir", OCTAVE_IMAGEDIR }, | |
| 866 { true, "includedir", OCTAVE_INCLUDEDIR }, | |
| 867 { true, "infodir", OCTAVE_INFODIR }, | |
| 6276 | 868 { true, "infofile", OCTAVE_INFOFILE }, |
| 6274 | 869 { true, "libdir", OCTAVE_LIBDIR }, |
| 870 { true, "libexecdir", OCTAVE_LIBEXECDIR }, | |
| 6311 | 871 { true, "localapiarchlibdir", OCTAVE_LOCALAPIARCHLIBDIR }, |
| 6274 | 872 { true, "localapifcnfiledir", OCTAVE_LOCALAPIFCNFILEDIR }, |
| 873 { true, "localapioctfiledir", OCTAVE_LOCALAPIOCTFILEDIR }, | |
| 874 { true, "localarchlibdir", OCTAVE_LOCALARCHLIBDIR }, | |
| 875 { true, "localfcnfiledir", OCTAVE_LOCALFCNFILEDIR }, | |
| 876 { true, "localoctfiledir", OCTAVE_LOCALOCTFILEDIR }, | |
| 877 { true, "localstartupfiledir", OCTAVE_LOCALSTARTUPFILEDIR }, | |
| 878 { true, "localverarchlibdir", OCTAVE_LOCALVERARCHLIBDIR }, | |
| 879 { true, "localverfcnfiledir", OCTAVE_LOCALVERFCNFILEDIR }, | |
| 880 { true, "localveroctfiledir", OCTAVE_LOCALVEROCTFILEDIR }, | |
| 881 { true, "man1dir", OCTAVE_MAN1DIR }, | |
| 882 { false, "man1ext", OCTAVE_MAN1EXT }, | |
| 883 { true, "mandir", OCTAVE_MANDIR }, | |
| 884 { true, "octfiledir", OCTAVE_OCTFILEDIR }, | |
| 885 { true, "octincludedir", OCTAVE_OCTINCLUDEDIR }, | |
| 886 { true, "octlibdir", OCTAVE_OCTLIBDIR }, | |
| 6276 | 887 { true, "prefix", OCTAVE_PREFIX }, |
| 6274 | 888 { true, "startupfiledir", OCTAVE_STARTUPFILEDIR }, |
| 889 { false, "version", OCTAVE_VERSION }, | |
| 890 { false, 0, 0 } | |
| 4357 | 891 }; |
| 892 | |
| 893 if (! initialized) | |
| 894 { | |
| 4675 | 895 m.assign ("dld", octave_value (octave_supports_dynamic_linking)); |
| 4357 | 896 |
| 4697 | 897 oct_mach_info::float_format ff = oct_mach_info::native_float_format (); |
| 898 m.assign ("float_format", | |
| 899 octave_value (oct_mach_info::float_format_as_string (ff))); | |
| 900 | |
| 901 m.assign ("words_big_endian", | |
| 902 octave_value (oct_mach_info::words_big_endian ())); | |
| 903 | |
| 904 m.assign ("words_little_endian", | |
| 905 octave_value (oct_mach_info::words_little_endian ())); | |
| 906 | |
| 4357 | 907 int i = 0; |
| 4440 | 908 |
| 909 while (true) | |
| 4357 | 910 { |
| 6274 | 911 const conf_info_struct& elt = conf_info[i++]; |
| 912 | |
| 913 const char *key = elt.key; | |
| 4357 | 914 |
| 915 if (key) | |
| 6274 | 916 { |
| 917 if (elt.subst_home) | |
| 918 m.assign (key, octave_value (subst_octave_home (elt.val))); | |
| 919 else | |
| 920 m.assign (key, octave_value (elt.val)); | |
| 921 } | |
| 4357 | 922 else |
| 923 break; | |
| 924 } | |
| 925 | |
| 4691 | 926 bool unix_system = true; |
| 7013 | 927 bool mac_system = false; |
| 4691 | 928 bool windows_system = false; |
| 929 | |
| 930 #if defined (WIN32) | |
| 931 windows_system = true; | |
| 932 #if !defined (__CYGWIN__) | |
| 933 unix_system = false; | |
| 934 #endif | |
| 935 #endif | |
| 936 | |
| 7010 | 937 #if defined (__APPLE__) && defined (__MACH__) |
| 938 mac_system = true; | |
| 939 #endif | |
| 940 | |
| 4691 | 941 m.assign ("unix", octave_value (unix_system)); |
| 7010 | 942 m.assign ("mac", octave_value (mac_system)); |
| 4691 | 943 m.assign ("windows", octave_value (windows_system)); |
| 944 | |
| 4357 | 945 initialized = true; |
| 946 } | |
| 2162 | 947 |
| 2689 | 948 int nargin = args.length (); |
| 949 | |
| 950 if (nargin == 1) | |
| 951 { | |
| 3523 | 952 std::string arg = args(0).string_value (); |
| 2689 | 953 |
| 954 if (! error_state) | |
| 4675 | 955 { |
| 956 Cell c = m.contents (arg.c_str ()); | |
| 5199 | 957 |
| 958 if (c.is_empty ()) | |
| 959 error ("octave_config_info: no info for `%s'", arg.c_str ()); | |
| 960 else | |
| 961 retval = c(0); | |
| 4675 | 962 } |
| 2689 | 963 } |
| 964 else if (nargin == 0) | |
| 4233 | 965 retval = m; |
| 2689 | 966 else |
| 5823 | 967 print_usage (); |
| 2689 | 968 |
| 969 return retval; | |
| 2162 | 970 } |
| 971 | |
| 1683 | 972 #if defined (__GNUG__) && defined (DEBUG_NEW_DELETE) |
| 2806 | 973 |
| 1683 | 974 int debug_new_delete = 0; |
| 975 | |
| 976 typedef void (*vfp)(void); | |
| 977 extern vfp __new_handler; | |
| 978 | |
| 979 void * | |
| 980 __builtin_new (size_t sz) | |
| 981 { | |
| 982 void *p; | |
| 983 | |
| 984 /* malloc (0) is unpredictable; avoid it. */ | |
| 985 if (sz == 0) | |
| 986 sz = 1; | |
| 2800 | 987 p = malloc (sz); |
| 1683 | 988 while (p == 0) |
| 989 { | |
| 990 (*__new_handler) (); | |
| 2800 | 991 p = malloc (sz); |
| 1683 | 992 } |
| 993 | |
| 994 if (debug_new_delete) | |
| 5629 | 995 std::cerr << "__builtin_new: " << p << std::endl; |
| 1683 | 996 |
| 997 return p; | |
| 998 } | |
| 999 | |
| 1000 void | |
| 1001 __builtin_delete (void *ptr) | |
| 1002 { | |
| 1003 if (debug_new_delete) | |
| 5629 | 1004 std::cerr << "__builtin_delete: " << ptr << std::endl; |
| 1683 | 1005 |
| 1006 if (ptr) | |
| 1007 free (ptr); | |
| 1008 } | |
| 2806 | 1009 |
| 1683 | 1010 #endif |
| 1011 | |
| 1012 /* | |
| 1013 ;;; Local Variables: *** | |
| 1014 ;;; mode: C++ *** | |
| 1015 ;;; End: *** | |
| 1016 */ |