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[emacs.git] / src / emacs.c
blobb356faa68ae111798e4b92c63dd09c7be2fd0f9e
1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1997, 1998, 1999,
3 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
23 #include <config.h>
24 #include <signal.h>
25 #include <errno.h>
26 #include <stdio.h>
28 #include <sys/types.h>
29 #include <sys/file.h>
31 #ifdef VMS
32 #include <ssdef.h>
33 #endif
35 #ifdef HAVE_UNISTD_H
36 #include <unistd.h>
37 #endif
39 #ifdef BSD_SYSTEM
40 #include <sys/ioctl.h>
41 #endif
43 #ifdef WINDOWSNT
44 #include <fcntl.h>
45 #include <windows.h> /* just for w32.h */
46 #include "w32.h"
47 #include "w32heap.h" /* for prototype of sbrk */
48 #endif
50 #include "lisp.h"
51 #include "commands.h"
52 #include "intervals.h"
53 #include "buffer.h"
54 #include "window.h"
56 #include "systty.h"
57 #include "blockinput.h"
58 #include "syssignal.h"
59 #include "process.h"
60 #include "termhooks.h"
61 #include "keyboard.h"
62 #include "keymap.h"
64 #ifdef HAVE_SETLOCALE
65 #include <locale.h>
66 #endif
68 #ifdef HAVE_SETRLIMIT
69 #include <sys/time.h>
70 #include <sys/resource.h>
71 #endif
73 #ifdef HAVE_PERSONALITY_LINUX32
74 #include <sys/personality.h>
75 #endif
77 #ifndef O_RDWR
78 #define O_RDWR 2
79 #endif
81 #ifdef HAVE_SETPGID
82 #if !defined (USG) || defined (BSD_PGRPS)
83 #undef setpgrp
84 #define setpgrp setpgid
85 #endif
86 #endif
88 extern void malloc_warning P_ ((char *));
89 extern void set_time_zone_rule P_ ((char *));
90 #ifdef HAVE_INDEX
91 extern char *index P_ ((const char *, int));
92 #endif
94 /* Make these values available in GDB, which doesn't see macros. */
96 #ifdef USE_LSB_TAG
97 int gdb_use_lsb = 1;
98 #else
99 int gdb_use_lsb = 0;
100 #endif
101 #ifdef NO_UNION_TYPE
102 int gdb_use_union = 0;
103 #else
104 int gdb_use_union = 1;
105 #endif
106 EMACS_INT gdb_valbits = VALBITS;
107 EMACS_INT gdb_gctypebits = GCTYPEBITS;
108 #ifdef DATA_SEG_BITS
109 EMACS_INT gdb_data_seg_bits = DATA_SEG_BITS;
110 #else
111 EMACS_INT gdb_data_seg_bits = 0;
112 #endif
113 EMACS_INT PVEC_FLAG = PSEUDOVECTOR_FLAG;
114 EMACS_INT gdb_array_mark_flag = ARRAY_MARK_FLAG;
115 /* GDB might say "No enum type named pvec_type" if we don't have at
116 least one symbol with that type, and then xbacktrace could fail. */
117 enum pvec_type gdb_pvec_type = PVEC_TYPE_MASK;
119 /* Command line args from shell, as list of strings. */
120 Lisp_Object Vcommand_line_args;
122 /* The name under which Emacs was invoked, with any leading directory
123 names discarded. */
124 Lisp_Object Vinvocation_name;
126 /* The directory name from which Emacs was invoked. */
127 Lisp_Object Vinvocation_directory;
129 /* The directory name in which to find subdirs such as lisp and etc.
130 nil means get them only from PATH_LOADSEARCH. */
131 Lisp_Object Vinstallation_directory;
133 /* Hook run by `kill-emacs' before it does really anything. */
134 Lisp_Object Vkill_emacs_hook;
136 /* An empty lisp string. To avoid having to build any other. */
137 Lisp_Object empty_string;
139 /* Search path separator. */
140 Lisp_Object Vpath_separator;
142 /* Set nonzero after Emacs has started up the first time.
143 Prevents reinitialization of the Lisp world and keymaps
144 on subsequent starts. */
145 int initialized;
147 #ifdef DOUG_LEA_MALLOC
148 /* Preserves a pointer to the memory allocated that copies that
149 static data inside glibc's malloc. */
150 void *malloc_state_ptr;
151 /* From glibc, a routine that returns a copy of the malloc internal state. */
152 extern void *malloc_get_state ();
153 /* From glibc, a routine that overwrites the malloc internal state. */
154 extern int malloc_set_state ();
155 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
156 dumping. Used to work around a bug in glibc's malloc. */
157 int malloc_using_checking;
158 #endif
160 /* Variable whose value is symbol giving operating system type. */
161 Lisp_Object Vsystem_type;
163 /* Variable whose value is string giving configuration built for. */
164 Lisp_Object Vsystem_configuration;
166 /* Variable whose value is string giving configuration options,
167 for use when reporting bugs. */
168 Lisp_Object Vsystem_configuration_options;
170 Lisp_Object Qfile_name_handler_alist;
172 /* Current and previous system locales for messages and time. */
173 Lisp_Object Vsystem_messages_locale;
174 Lisp_Object Vprevious_system_messages_locale;
175 Lisp_Object Vsystem_time_locale;
176 Lisp_Object Vprevious_system_time_locale;
178 /* If non-zero, emacs should not attempt to use a window-specific code,
179 but instead should use the virtual terminal under which it was started. */
180 int inhibit_window_system;
182 /* If nonzero, set Emacs to run at this priority. This is also used
183 in child_setup and sys_suspend to make sure subshells run at normal
184 priority; those functions have their own extern declaration. */
185 EMACS_INT emacs_priority;
187 /* If non-zero, a filter or a sentinel is running. Tested to save the match
188 data on the first attempt to change it inside asynchronous code. */
189 int running_asynch_code;
191 #ifdef BSD_PGRPS
192 /* See sysdep.c. */
193 extern int inherited_pgroup;
194 #endif
196 #ifdef HAVE_X_WINDOWS
197 /* If non-zero, -d was specified, meaning we're using some window system. */
198 int display_arg;
199 #endif
201 /* An address near the bottom of the stack.
202 Tells GC how to save a copy of the stack. */
203 char *stack_bottom;
205 /* The address where the heap starts (from the first sbrk (0) call). */
206 static void *my_heap_start;
208 /* The gap between BSS end and heap start as far as we can tell. */
209 static unsigned long heap_bss_diff;
211 /* If the gap between BSS end and heap start is larger than this we try to
212 work around it, and if that fails, output a warning in dump-emacs. */
213 #define MAX_HEAP_BSS_DIFF (1024*1024)
216 #ifdef HAVE_WINDOW_SYSTEM
217 extern Lisp_Object Vwindow_system;
218 #endif /* HAVE_WINDOW_SYSTEM */
220 extern Lisp_Object Vauto_save_list_file_name;
222 extern Lisp_Object Vinhibit_redisplay;
224 #ifdef USG_SHARED_LIBRARIES
225 /* If nonzero, this is the place to put the end of the writable segment
226 at startup. */
228 unsigned int bss_end = 0;
229 #endif
231 /* Nonzero means running Emacs without interactive terminal. */
233 int noninteractive;
235 /* Value of Lisp variable `noninteractive'.
236 Normally same as C variable `noninteractive'
237 but nothing terrible happens if user sets this one. */
239 int noninteractive1;
241 /* Save argv and argc. */
242 char **initial_argv;
243 int initial_argc;
245 static void sort_args ();
246 void syms_of_emacs ();
248 /* MSVC needs each string be shorter than 2048 bytes, so the usage
249 strings below are split to not overflow this limit. */
250 #define USAGE1 "\
251 Usage: %s [OPTION-OR-FILENAME]...\n\
253 Run Emacs, the extensible, customizable, self-documenting real-time\n\
254 display editor. The recommended way to start Emacs for normal editing\n\
255 is with no options at all.\n\
257 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
258 read the main documentation for these command-line arguments.\n\
260 Initialization options:\n\
262 --batch do not do interactive display; implies -q\n\
263 --debug-init enable Emacs Lisp debugger for init file\n\
264 --display, -d DISPLAY use X server DISPLAY\n\
265 --multibyte, --no-unibyte inhibit the effect of EMACS_UNIBYTE\n\
266 --no-desktop do not load a saved desktop\n\
267 --no-init-file, -q load neither ~/.emacs nor default.el\n\
268 --no-shared-memory, -nl do not use shared memory\n\
269 --no-site-file do not load site-start.el\n\
270 --no-splash do not display a splash screen on startup\n\
271 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
272 --quick, -Q equivalent to -q --no-site-file --no-splash\n\
273 --script FILE run FILE as an Emacs Lisp script\n\
274 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
275 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
276 --user, -u USER load ~USER/.emacs instead of your own\n\
277 \n%s"
279 #define USAGE2 "\
280 Action options:\n\
282 FILE visit FILE using find-file\n\
283 +LINE FILE visit FILE using find-file, then go to line LINE\n\
284 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
285 column COLUMN\n\
286 --directory, -L DIR add DIR to variable load-path\n\
287 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
288 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
289 --file FILE visit FILE using find-file\n\
290 --find-file FILE visit FILE using find-file\n\
291 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
292 --insert FILE insert contents of FILE into current buffer\n\
293 --kill exit without asking for confirmation\n\
294 --load, -l FILE load Emacs Lisp FILE using the load function\n\
295 --visit FILE visit FILE using find-file\n\
298 #define USAGE3 "\
299 Display options:\n\
301 --background-color, -bg COLOR window background color\n\
302 --basic-display, -D disable many display features;\n\
303 used for debugging Emacs\n\
304 --border-color, -bd COLOR main border color\n\
305 --border-width, -bw WIDTH width of main border\n\
306 --color, --color=MODE override color mode for character terminals;\n\
307 MODE defaults to `auto', and can also\n\
308 be `never', `auto', `always',\n\
309 or a mode name like `ansi8'\n\
310 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
311 --font, -fn FONT default font; must be fixed-width\n\
312 --foreground-color, -fg COLOR window foreground color\n\
313 --fullheight, -fh make the first frame high as the screen\n\
314 --fullscreen, -fs make first frame fullscreen\n\
315 --fullwidth, -fw make the first frame wide as the screen\n\
316 --geometry, -g GEOMETRY window geometry\n\
317 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
318 --iconic start Emacs in iconified state\n\
319 --internal-border, -ib WIDTH width between text and main border\n\
320 --line-spacing, -lsp PIXELS additional space to put between lines\n\
321 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
322 --name NAME title for initial Emacs frame\n\
323 --no-blinking-cursor, -nbc disable blinking cursor\n\
324 --reverse-video, -r, -rv switch foreground and background\n\
325 --title, -T TITLE title for initial Emacs frame\n\
326 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
327 --xrm XRESOURCES set additional X resources\n\
328 --help display this help and exit\n\
329 --version output version information and exit\n\
332 #define USAGE4 "\
333 You can generally also specify long option names with a single -; for\n\
334 example, -batch as well as --batch. You can use any unambiguous\n\
335 abbreviation for a --option.\n\
337 Various environment variables and window system resources also affect\n\
338 Emacs' operation. See the main documentation.\n\
340 Report bugs to %s. First, please see the Bugs\n\
341 section of the Emacs manual or the file BUGS.\n"
344 /* Signal code for the fatal signal that was received. */
345 int fatal_error_code;
347 /* Nonzero if handling a fatal error already. */
348 int fatal_error_in_progress;
350 /* If non-null, call this function from fatal_error_signal before
351 committing suicide. */
353 void (*fatal_error_signal_hook) P_ ((void));
355 #ifdef HAVE_GTK_AND_PTHREAD
356 /* When compiled with GTK and running under Gnome, multiple threads meay be
357 created. Keep track of our main thread to make sure signals are delivered
358 to it (see syssignal.h). */
360 pthread_t main_thread;
361 #endif
364 /* Handle bus errors, invalid instruction, etc. */
365 SIGTYPE
366 fatal_error_signal (sig)
367 int sig;
369 SIGNAL_THREAD_CHECK (sig);
370 fatal_error_code = sig;
371 signal (sig, SIG_DFL);
373 TOTALLY_UNBLOCK_INPUT;
375 /* If fatal error occurs in code below, avoid infinite recursion. */
376 if (! fatal_error_in_progress)
378 fatal_error_in_progress = 1;
380 shut_down_emacs (sig, 0, Qnil);
383 #ifdef VMS
384 LIB$STOP (SS$_ABORT);
385 #else
386 /* Signal the same code; this time it will really be fatal.
387 Remember that since we're in a signal handler, the signal we're
388 going to send is probably blocked, so we have to unblock it if we
389 want to really receive it. */
390 #ifndef MSDOS
391 sigunblock (sigmask (fatal_error_code));
392 #endif
394 if (fatal_error_signal_hook)
395 fatal_error_signal_hook ();
397 kill (getpid (), fatal_error_code);
398 #endif /* not VMS */
401 #ifdef SIGDANGER
403 /* Handler for SIGDANGER. */
404 SIGTYPE
405 memory_warning_signal (sig)
406 int sig;
408 signal (sig, memory_warning_signal);
409 SIGNAL_THREAD_CHECK (sig);
411 malloc_warning ("Operating system warns that virtual memory is running low.\n");
413 /* It might be unsafe to call do_auto_save now. */
414 force_auto_save_soon ();
416 #endif
418 /* We define abort, rather than using it from the library,
419 so that GDB can return from a breakpoint here.
420 MSDOS has its own definition in msdos.c. */
422 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
424 #ifndef ABORT_RETURN_TYPE
425 #define ABORT_RETURN_TYPE void
426 #endif
428 ABORT_RETURN_TYPE
429 abort ()
431 kill (getpid (), SIGABRT);
432 /* This shouldn't be executed, but it prevents a warning. */
433 exit (1);
435 #endif
438 /* Code for dealing with Lisp access to the Unix command line. */
440 static void
441 init_cmdargs (argc, argv, skip_args)
442 int argc;
443 char **argv;
444 int skip_args;
446 register int i;
447 Lisp_Object name, dir, tem;
448 int count = SPECPDL_INDEX ();
449 Lisp_Object raw_name;
451 initial_argv = argv;
452 initial_argc = argc;
454 raw_name = build_string (argv[0]);
456 /* Add /: to the front of the name
457 if it would otherwise be treated as magic. */
458 tem = Ffind_file_name_handler (raw_name, Qt);
459 if (! NILP (tem))
460 raw_name = concat2 (build_string ("/:"), raw_name);
462 Vinvocation_name = Ffile_name_nondirectory (raw_name);
463 Vinvocation_directory = Ffile_name_directory (raw_name);
465 /* If we got no directory in argv[0], search PATH to find where
466 Emacs actually came from. */
467 if (NILP (Vinvocation_directory))
469 Lisp_Object found;
470 int yes = openp (Vexec_path, Vinvocation_name,
471 Vexec_suffixes, &found, make_number (X_OK));
472 if (yes == 1)
474 /* Add /: to the front of the name
475 if it would otherwise be treated as magic. */
476 tem = Ffind_file_name_handler (found, Qt);
477 if (! NILP (tem))
478 found = concat2 (build_string ("/:"), found);
479 Vinvocation_directory = Ffile_name_directory (found);
483 if (!NILP (Vinvocation_directory)
484 && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
485 /* Emacs was started with relative path, like ./emacs.
486 Make it absolute. */
487 Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil);
489 Vinstallation_directory = Qnil;
491 if (!NILP (Vinvocation_directory))
493 dir = Vinvocation_directory;
494 name = Fexpand_file_name (Vinvocation_name, dir);
495 while (1)
497 Lisp_Object tem, lib_src_exists;
498 Lisp_Object etc_exists, info_exists;
500 /* See if dir contains subdirs for use by Emacs.
501 Check for the ones that would exist in a build directory,
502 not including lisp and info. */
503 tem = Fexpand_file_name (build_string ("lib-src"), dir);
504 lib_src_exists = Ffile_exists_p (tem);
506 #ifdef MSDOS
507 /* MSDOS installations frequently remove lib-src, but we still
508 must set installation-directory, or else info won't find
509 its files (it uses the value of installation-directory). */
510 tem = Fexpand_file_name (build_string ("info"), dir);
511 info_exists = Ffile_exists_p (tem);
512 #else
513 info_exists = Qnil;
514 #endif
516 if (!NILP (lib_src_exists) || !NILP (info_exists))
518 tem = Fexpand_file_name (build_string ("etc"), dir);
519 etc_exists = Ffile_exists_p (tem);
520 if (!NILP (etc_exists))
522 Vinstallation_directory
523 = Ffile_name_as_directory (dir);
524 break;
528 /* See if dir's parent contains those subdirs. */
529 tem = Fexpand_file_name (build_string ("../lib-src"), dir);
530 lib_src_exists = Ffile_exists_p (tem);
533 #ifdef MSDOS
534 /* See the MSDOS commentary above. */
535 tem = Fexpand_file_name (build_string ("../info"), dir);
536 info_exists = Ffile_exists_p (tem);
537 #else
538 info_exists = Qnil;
539 #endif
541 if (!NILP (lib_src_exists) || !NILP (info_exists))
543 tem = Fexpand_file_name (build_string ("../etc"), dir);
544 etc_exists = Ffile_exists_p (tem);
545 if (!NILP (etc_exists))
547 tem = Fexpand_file_name (build_string (".."), dir);
548 Vinstallation_directory
549 = Ffile_name_as_directory (tem);
550 break;
554 /* If the Emacs executable is actually a link,
555 next try the dir that the link points into. */
556 tem = Ffile_symlink_p (name);
557 if (!NILP (tem))
559 name = Fexpand_file_name (tem, dir);
560 dir = Ffile_name_directory (name);
562 else
563 break;
567 Vcommand_line_args = Qnil;
569 for (i = argc - 1; i >= 0; i--)
571 if (i == 0 || i > skip_args)
572 /* For the moment, we keep arguments as is in unibyte strings.
573 They are decoded in the function command-line after we know
574 locale-coding-system. */
575 Vcommand_line_args
576 = Fcons (make_unibyte_string (argv[i], strlen (argv[i])),
577 Vcommand_line_args);
580 unbind_to (count, Qnil);
583 DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
584 doc: /* Return the program name that was used to run Emacs.
585 Any directory names are omitted. */)
588 return Fcopy_sequence (Vinvocation_name);
591 DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
592 0, 0, 0,
593 doc: /* Return the directory name in which the Emacs executable was located. */)
596 return Fcopy_sequence (Vinvocation_directory);
600 #ifdef VMS
601 #ifdef LINK_CRTL_SHARE
602 #ifdef SHARABLE_LIB_BUG
603 extern noshare char **environ;
604 #endif /* SHARABLE_LIB_BUG */
605 #endif /* LINK_CRTL_SHARE */
606 #endif /* VMS */
608 #ifdef HAVE_TZSET
609 /* A valid but unlikely value for the TZ environment value.
610 It is OK (though a bit slower) if the user actually chooses this value. */
611 static char dump_tz[] = "UtC0";
612 #endif
614 #ifndef ORDINARY_LINK
615 /* We don't include crtbegin.o and crtend.o in the link,
616 so these functions and variables might be missed.
617 Provide dummy definitions to avoid error.
618 (We don't have any real constructors or destructors.) */
619 #ifdef __GNUC__
620 #ifndef GCC_CTORS_IN_LIBC
621 void __do_global_ctors ()
623 void __do_global_ctors_aux ()
625 void __do_global_dtors ()
627 /* GNU/Linux has a bug in its library; avoid an error. */
628 #ifndef GNU_LINUX
629 char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
630 #endif
631 char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
632 #endif /* GCC_CTORS_IN_LIBC */
633 void __main ()
635 #endif /* __GNUC__ */
636 #endif /* ORDINARY_LINK */
638 /* Test whether the next argument in ARGV matches SSTR or a prefix of
639 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
640 (the argument is supposed to have a value) store in *VALPTR either
641 the next argument or the portion of this one after the equal sign.
642 ARGV is read starting at position *SKIPPTR; this index is advanced
643 by the number of arguments used.
645 Too bad we can't just use getopt for all of this, but we don't have
646 enough information to do it right. */
648 static int
649 argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr)
650 char **argv;
651 int argc;
652 char *sstr;
653 char *lstr;
654 int minlen;
655 char **valptr;
656 int *skipptr;
658 char *p = NULL;
659 int arglen;
660 char *arg;
662 /* Don't access argv[argc]; give up in advance. */
663 if (argc <= *skipptr + 1)
664 return 0;
666 arg = argv[*skipptr+1];
667 if (arg == NULL)
668 return 0;
669 if (strcmp (arg, sstr) == 0)
671 if (valptr != NULL)
673 *valptr = argv[*skipptr+2];
674 *skipptr += 2;
676 else
677 *skipptr += 1;
678 return 1;
680 arglen = (valptr != NULL && (p = index (arg, '=')) != NULL
681 ? p - arg : strlen (arg));
682 if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
683 return 0;
684 else if (valptr == NULL)
686 *skipptr += 1;
687 return 1;
689 else if (p != NULL)
691 *valptr = p+1;
692 *skipptr += 1;
693 return 1;
695 else if (argv[*skipptr+2] != NULL)
697 *valptr = argv[*skipptr+2];
698 *skipptr += 2;
699 return 1;
701 else
703 return 0;
707 #ifdef DOUG_LEA_MALLOC
709 /* malloc can be invoked even before main (e.g. by the dynamic
710 linker), so the dumped malloc state must be restored as early as
711 possible using this special hook. */
713 static void
714 malloc_initialize_hook ()
716 #ifndef USE_CRT_DLL
717 extern char **environ;
718 #endif
720 if (initialized)
722 if (!malloc_using_checking)
723 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
724 ignored if the heap to be restored was constructed without
725 malloc checking. Can't use unsetenv, since that calls malloc. */
727 char **p;
729 for (p = environ; p && *p; p++)
730 if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0)
733 *p = p[1];
734 while (*++p);
735 break;
739 malloc_set_state (malloc_state_ptr);
740 #ifndef XMALLOC_OVERRUN_CHECK
741 free (malloc_state_ptr);
742 #endif
744 else
746 if (my_heap_start == 0)
747 my_heap_start = sbrk (0);
748 malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
752 void (*__malloc_initialize_hook) () = malloc_initialize_hook;
754 #endif /* DOUG_LEA_MALLOC */
757 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
758 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"
760 /* This function is used to determine an address to which bug report should
761 be sent. */
763 char *
764 bug_reporting_address ()
766 int count = 0;
767 Lisp_Object temp;
768 char *string;
770 temp = Fsymbol_value (intern ("emacs-version"));
772 /* When `emacs-version' is invalid, use normal address. */
773 if (!STRINGP(temp))
774 return REPORT_EMACS_BUG_ADDRESS;
776 string = SDATA (temp);
778 /* Count dots in `emacs-version'. */
779 while (*string)
781 if (*string == '.')
782 count++;
783 string++;
786 /* When `emacs-version' has at least three dots, it is development or
787 pretest version of Emacs. */
788 return count >= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS : REPORT_EMACS_BUG_ADDRESS;
792 /* ARGSUSED */
794 main (argc, argv
795 #ifdef VMS
796 , envp
797 #endif
799 int argc;
800 char **argv;
801 #ifdef VMS
802 char **envp;
803 #endif
805 #if GC_MARK_STACK
806 Lisp_Object dummy;
807 #endif
808 char stack_bottom_variable;
809 int do_initial_setlocale;
810 int skip_args = 0;
811 #ifndef USE_CRT_DLL
812 extern int errno;
813 #endif
814 #ifdef HAVE_SETRLIMIT
815 struct rlimit rlim;
816 #endif
817 int no_loadup = 0;
818 char *junk = 0;
820 #if GC_MARK_STACK
821 extern Lisp_Object *stack_base;
822 stack_base = &dummy;
823 #endif
825 if (!initialized)
827 extern char my_endbss[];
828 extern char *my_endbss_static;
830 if (my_heap_start == 0)
831 my_heap_start = sbrk (0);
833 heap_bss_diff = (char *)my_heap_start - max (my_endbss, my_endbss_static);
836 #ifdef LINUX_SBRK_BUG
837 __sbrk (1);
838 #endif
840 #ifdef RUN_TIME_REMAP
841 if (initialized)
842 run_time_remap (argv[0]);
843 #endif
845 #ifdef MAC_OSX
846 if (!initialized)
847 unexec_init_emacs_zone ();
848 #endif
850 sort_args (argc, argv);
851 argc = 0;
852 while (argv[argc]) argc++;
854 if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)
855 /* We don't know the version number unless this is a dumped Emacs.
856 So ignore --version otherwise. */
857 && initialized)
859 Lisp_Object tem;
860 tem = Fsymbol_value (intern ("emacs-version"));
861 if (!STRINGP (tem))
863 fprintf (stderr, "Invalid value of `emacs-version'\n");
864 exit (1);
866 else
868 printf ("GNU Emacs %s\n", SDATA (tem));
869 printf ("Copyright (C) 2007 Free Software Foundation, Inc.\n");
870 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
871 printf ("You may redistribute copies of Emacs\n");
872 printf ("under the terms of the GNU General Public License.\n");
873 printf ("For more information about these matters, ");
874 printf ("see the file named COPYING.\n");
875 exit (0);
879 #ifdef HAVE_PERSONALITY_LINUX32
880 /* See if there is a gap between the end of BSS and the heap.
881 In that case, set personality and exec ourself again. */
882 if (!initialized
883 && (strcmp (argv[argc-1], "dump") == 0
884 || strcmp (argv[argc-1], "bootstrap") == 0)
885 && heap_bss_diff > MAX_HEAP_BSS_DIFF)
887 if (! getenv ("EMACS_HEAP_EXEC"))
889 /* Set this so we only do this once. */
890 putenv("EMACS_HEAP_EXEC=true");
892 /* A flag to turn off address randomization which is introduced
893 in linux kernel shipped with fedora core 4 */
894 #define ADD_NO_RANDOMIZE 0x0040000
895 personality (PER_LINUX32 | ADD_NO_RANDOMIZE);
896 #undef ADD_NO_RANDOMIZE
898 execvp (argv[0], argv);
900 /* If the exec fails, try to dump anyway. */
901 perror ("execvp");
904 #endif /* HAVE_PERSONALITY_LINUX32 */
907 /* Map in shared memory, if we are using that. */
908 #ifdef HAVE_SHM
909 if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args))
911 map_in_data (0);
912 /* The shared memory was just restored, which clobbered this. */
913 skip_args = 1;
915 else
917 map_in_data (1);
918 /* The shared memory was just restored, which clobbered this. */
919 skip_args = 0;
921 #endif
923 #ifdef NeXT
925 extern int malloc_cookie;
926 /* This helps out unexnext.c. */
927 if (initialized)
928 if (malloc_jumpstart (malloc_cookie) != 0)
929 printf ("malloc jumpstart failed!\n");
931 #endif /* NeXT */
933 #ifdef MAC_OSX
934 /* Skip process serial number passed in the form -psn_x_y as
935 command-line argument. The WindowServer adds this option when
936 Emacs is invoked from the Finder or by the `open' command. In
937 these cases, the working directory becomes `/', so we change it
938 to the user's home directory. */
939 if (argc > skip_args + 1 && strncmp (argv[skip_args+1], "-psn_", 5) == 0)
941 chdir (getenv ("HOME"));
942 skip_args++;
944 #endif /* MAC_OSX */
946 #ifdef VMS
947 /* If -map specified, map the data file in. */
949 char *file;
950 if (argmatch (argv, argc, "-map", "--map-data", 3, &file, &skip_args))
951 mapin_data (file);
954 #ifdef LINK_CRTL_SHARE
955 #ifdef SHARABLE_LIB_BUG
956 /* Bletcherous shared libraries! */
957 if (!stdin)
958 stdin = fdopen (0, "r");
959 if (!stdout)
960 stdout = fdopen (1, "w");
961 if (!stderr)
962 stderr = fdopen (2, "w");
963 if (!environ)
964 environ = envp;
965 #endif /* SHARABLE_LIB_BUG */
966 #endif /* LINK_CRTL_SHARE */
967 #endif /* VMS */
969 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
970 /* Extend the stack space available.
971 Don't do that if dumping, since some systems (e.g. DJGPP)
972 might define a smaller stack limit at that time. */
973 if (1
974 #ifndef CANNOT_DUMP
975 && (!noninteractive || initialized)
976 #endif
977 && !getrlimit (RLIMIT_STACK, &rlim))
979 long newlim;
980 extern size_t re_max_failures;
981 /* Approximate the amount regex.c needs per unit of re_max_failures. */
982 int ratio = 20 * sizeof (char *);
983 /* Then add 33% to cover the size of the smaller stacks that regex.c
984 successively allocates and discards, on its way to the maximum. */
985 ratio += ratio / 3;
986 /* Add in some extra to cover
987 what we're likely to use for other reasons. */
988 newlim = re_max_failures * ratio + 200000;
989 #ifdef __NetBSD__
990 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
991 stack allocation routine for new process that the allocation
992 fails if stack limit is not on page boundary. So, round up the
993 new limit to page boundary. */
994 newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize();
995 #endif
996 if (newlim > rlim.rlim_max)
998 newlim = rlim.rlim_max;
999 /* Don't let regex.c overflow the stack we have. */
1000 re_max_failures = (newlim - 200000) / ratio;
1002 if (rlim.rlim_cur < newlim)
1003 rlim.rlim_cur = newlim;
1005 setrlimit (RLIMIT_STACK, &rlim);
1007 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
1009 /* Record (approximately) where the stack begins. */
1010 stack_bottom = &stack_bottom_variable;
1012 #ifdef USG_SHARED_LIBRARIES
1013 if (bss_end)
1014 brk ((void *)bss_end);
1015 #endif
1017 clearerr (stdin);
1019 #ifndef SYSTEM_MALLOC
1020 /* Arrange to get warning messages as memory fills up. */
1021 memory_warnings (0, malloc_warning);
1023 /* Call malloc at least once, to run the initial __malloc_hook.
1024 Also call realloc and free for consistency. */
1025 free (realloc (malloc (4), 4));
1027 # ifndef SYNC_INPUT
1028 /* Arrange to disable interrupt input inside malloc etc. */
1029 uninterrupt_malloc ();
1030 # endif /* not SYNC_INPUT */
1031 #endif /* not SYSTEM_MALLOC */
1033 #ifdef HAVE_GTK_AND_PTHREAD
1034 main_thread = pthread_self ();
1035 #endif /* HAVE_GTK_AND_PTHREAD */
1037 #if defined (MSDOS) || defined (WINDOWSNT)
1038 /* We do all file input/output as binary files. When we need to translate
1039 newlines, we do that manually. */
1040 _fmode = O_BINARY;
1041 #endif /* MSDOS || WINDOWSNT */
1043 #ifdef MSDOS
1044 #if __DJGPP__ >= 2
1045 if (!isatty (fileno (stdin)))
1046 setmode (fileno (stdin), O_BINARY);
1047 if (!isatty (fileno (stdout)))
1049 fflush (stdout);
1050 setmode (fileno (stdout), O_BINARY);
1052 #else /* not __DJGPP__ >= 2 */
1053 (stdin)->_flag &= ~_IOTEXT;
1054 (stdout)->_flag &= ~_IOTEXT;
1055 (stderr)->_flag &= ~_IOTEXT;
1056 #endif /* not __DJGPP__ >= 2 */
1057 #endif /* MSDOS */
1059 #ifdef SET_EMACS_PRIORITY
1060 if (emacs_priority)
1061 nice (emacs_priority);
1062 setuid (getuid ());
1063 #endif /* SET_EMACS_PRIORITY */
1065 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
1066 The build procedure uses this while dumping, to ensure that the
1067 dumped Emacs does not have its system locale tables initialized,
1068 as that might cause screwups when the dumped Emacs starts up. */
1070 char *lc_all = getenv ("LC_ALL");
1071 do_initial_setlocale = ! lc_all || strcmp (lc_all, "C");
1074 /* Set locale now, so that initial error messages are localized properly.
1075 fixup_locale must wait until later, since it builds strings. */
1076 if (do_initial_setlocale)
1077 setlocale (LC_ALL, "");
1079 #ifdef EXTRA_INITIALIZE
1080 EXTRA_INITIALIZE;
1081 #endif
1083 inhibit_window_system = 0;
1085 /* Handle the -t switch, which specifies filename to use as terminal. */
1086 while (1)
1088 char *term;
1089 if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
1091 int result;
1092 emacs_close (0);
1093 emacs_close (1);
1094 result = emacs_open (term, O_RDWR, 0);
1095 if (result < 0)
1097 char *errstring = strerror (errno);
1098 fprintf (stderr, "%s: %s: %s\n", argv[0], term, errstring);
1099 exit (1);
1101 dup (0);
1102 if (! isatty (0))
1104 fprintf (stderr, "%s: %s: not a tty\n", argv[0], term);
1105 exit (1);
1107 fprintf (stderr, "Using %s\n", term);
1108 #ifdef HAVE_WINDOW_SYSTEM
1109 inhibit_window_system = 1; /* -t => -nw */
1110 #endif
1112 else
1113 break;
1116 /* Command line option --no-windows is deprecated and thus not mentioned
1117 in the manual and usage informations. */
1118 if (argmatch (argv, argc, "-nw", "--no-window-system", 6, NULL, &skip_args)
1119 || argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
1120 inhibit_window_system = 1;
1122 /* Handle the -batch switch, which means don't do interactive display. */
1123 noninteractive = 0;
1124 if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
1126 noninteractive = 1;
1127 Vundo_outer_limit = Qnil;
1129 if (argmatch (argv, argc, "-script", "--script", 3, &junk, &skip_args))
1131 noninteractive = 1; /* Set batch mode. */
1132 /* Convert --script to --scriptload, un-skip it, and sort again
1133 so that it will be handled in proper sequence. */
1134 argv[skip_args - 1] = "-scriptload";
1135 skip_args -= 2;
1136 sort_args (argc, argv);
1139 /* Handle the --help option, which gives a usage message. */
1140 if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
1142 printf (USAGE1, argv[0], USAGE2);
1143 printf (USAGE3);
1144 printf (USAGE4, bug_reporting_address ());
1145 exit (0);
1148 if (! noninteractive)
1150 #ifdef BSD_PGRPS
1151 if (initialized)
1153 inherited_pgroup = EMACS_GETPGRP (0);
1154 setpgrp (0, getpid ());
1156 #else
1157 #if defined (USG5) && defined (INTERRUPT_INPUT)
1158 setpgrp ();
1159 #endif
1160 #endif
1161 #if defined (HAVE_GTK_AND_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1163 extern void malloc_enable_thread P_ ((void));
1165 malloc_enable_thread ();
1167 #endif
1170 init_signals ();
1172 /* Don't catch SIGHUP if dumping. */
1173 if (1
1174 #ifndef CANNOT_DUMP
1175 && initialized
1176 #endif
1179 sigblock (sigmask (SIGHUP));
1180 /* In --batch mode, don't catch SIGHUP if already ignored.
1181 That makes nohup work. */
1182 if (! noninteractive
1183 || signal (SIGHUP, SIG_IGN) != SIG_IGN)
1184 signal (SIGHUP, fatal_error_signal);
1185 sigunblock (sigmask (SIGHUP));
1188 if (
1189 #ifndef CANNOT_DUMP
1190 ! noninteractive || initialized
1191 #else
1193 #endif
1196 /* Don't catch these signals in batch mode if dumping.
1197 On some machines, this sets static data that would make
1198 signal fail to work right when the dumped Emacs is run. */
1199 signal (SIGQUIT, fatal_error_signal);
1200 signal (SIGILL, fatal_error_signal);
1201 signal (SIGTRAP, fatal_error_signal);
1202 #ifdef SIGUSR1
1203 add_user_signal (SIGUSR1, "sigusr1");
1204 #endif
1205 #ifdef SIGUSR2
1206 add_user_signal (SIGUSR2, "sigusr2");
1207 #endif
1208 #ifdef SIGABRT
1209 signal (SIGABRT, fatal_error_signal);
1210 #endif
1211 #ifdef SIGHWE
1212 signal (SIGHWE, fatal_error_signal);
1213 #endif
1214 #ifdef SIGPRE
1215 signal (SIGPRE, fatal_error_signal);
1216 #endif
1217 #ifdef SIGORE
1218 signal (SIGORE, fatal_error_signal);
1219 #endif
1220 #ifdef SIGUME
1221 signal (SIGUME, fatal_error_signal);
1222 #endif
1223 #ifdef SIGDLK
1224 signal (SIGDLK, fatal_error_signal);
1225 #endif
1226 #ifdef SIGCPULIM
1227 signal (SIGCPULIM, fatal_error_signal);
1228 #endif
1229 #ifdef SIGIOT
1230 /* This is missing on some systems - OS/2, for example. */
1231 signal (SIGIOT, fatal_error_signal);
1232 #endif
1233 #ifdef SIGEMT
1234 signal (SIGEMT, fatal_error_signal);
1235 #endif
1236 signal (SIGFPE, fatal_error_signal);
1237 #ifdef SIGBUS
1238 signal (SIGBUS, fatal_error_signal);
1239 #endif
1240 signal (SIGSEGV, fatal_error_signal);
1241 #ifdef SIGSYS
1242 signal (SIGSYS, fatal_error_signal);
1243 #endif
1244 signal (SIGTERM, fatal_error_signal);
1245 #ifdef SIGXCPU
1246 signal (SIGXCPU, fatal_error_signal);
1247 #endif
1248 #ifdef SIGXFSZ
1249 signal (SIGXFSZ, fatal_error_signal);
1250 #endif /* SIGXFSZ */
1252 #ifdef SIGDANGER
1253 /* This just means available memory is getting low. */
1254 signal (SIGDANGER, memory_warning_signal);
1255 #endif
1257 #ifdef AIX
1258 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1259 signal (SIGXCPU, fatal_error_signal);
1260 #ifndef _I386
1261 signal (SIGIOINT, fatal_error_signal);
1262 #endif
1263 signal (SIGGRANT, fatal_error_signal);
1264 signal (SIGRETRACT, fatal_error_signal);
1265 signal (SIGSOUND, fatal_error_signal);
1266 signal (SIGMSG, fatal_error_signal);
1267 #endif /* AIX */
1270 noninteractive1 = noninteractive;
1272 /* Perform basic initializations (not merely interning symbols). */
1274 if (!initialized)
1276 init_alloc_once ();
1277 init_obarray ();
1278 init_eval_once ();
1279 init_charset_once ();
1280 init_coding_once ();
1281 init_syntax_once (); /* Create standard syntax table. */
1282 init_category_once (); /* Create standard category table. */
1283 /* Must be done before init_buffer. */
1284 init_casetab_once ();
1285 init_buffer_once (); /* Create buffer table and some buffers. */
1286 init_minibuf_once (); /* Create list of minibuffers. */
1287 /* Must precede init_window_once. */
1289 /* Call syms_of_xfaces before init_window_once because that
1290 function creates Vterminal_frame. Termcap frames now use
1291 faces, and the face implementation uses some symbols as
1292 face names. */
1293 syms_of_xfaces ();
1294 /* Call syms_of_keyboard before init_window_once because
1295 keyboard sets up symbols that include some face names that
1296 the X support will want to use. This can happen when
1297 CANNOT_DUMP is defined. */
1298 syms_of_keyboard ();
1300 #ifdef MAC_OS8
1301 /* init_window_once calls make_terminal_frame which on Mac OS
1302 creates a full-fledge output_mac type frame. This does not
1303 work correctly before syms_of_textprop, syms_of_macfns,
1304 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1305 syms_of_frame, mac_term_init, and init_keyboard have already
1306 been called. */
1307 syms_of_textprop ();
1308 syms_of_macfns ();
1309 syms_of_ccl ();
1310 syms_of_fontset ();
1311 syms_of_macterm ();
1312 syms_of_macmenu ();
1313 syms_of_macselect ();
1314 syms_of_data ();
1315 syms_of_search ();
1316 syms_of_frame ();
1318 init_atimer ();
1319 mac_term_init (build_string ("Mac"), NULL, NULL);
1320 init_keyboard ();
1321 #endif
1323 init_window_once (); /* Init the window system. */
1324 init_fileio_once (); /* Must precede any path manipulation. */
1325 #ifdef HAVE_WINDOW_SYSTEM
1326 init_fringe_once (); /* Swap bitmaps if necessary. */
1327 #endif /* HAVE_WINDOW_SYSTEM */
1330 init_alloc ();
1332 if (do_initial_setlocale)
1334 fixup_locale ();
1335 Vsystem_messages_locale = Vprevious_system_messages_locale;
1336 Vsystem_time_locale = Vprevious_system_time_locale;
1339 init_eval ();
1340 init_data ();
1341 #ifdef CLASH_DETECTION
1342 init_filelock ();
1343 #endif
1344 #ifndef MAC_OS8
1345 init_atimer ();
1346 #endif
1347 running_asynch_code = 0;
1349 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1350 but not while dumping. */
1351 if (1)
1353 int inhibit_unibyte = 0;
1355 /* --multibyte overrides EMACS_UNIBYTE. */
1356 if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args)
1357 || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args)
1358 /* Ignore EMACS_UNIBYTE before dumping. */
1359 || (!initialized && noninteractive))
1360 inhibit_unibyte = 1;
1362 /* --unibyte requests that we set up to do everything with single-byte
1363 buffers and strings. We need to handle this before calling
1364 init_lread, init_editfns and other places that generate Lisp strings
1365 from text in the environment. */
1366 /* Actually this shouldn't be needed as of 20.4 in a generally
1367 unibyte environment. As handa says, environment values
1368 aren't now decoded; also existing buffers are now made
1369 unibyte during startup if .emacs sets unibyte. Tested with
1370 8-bit data in environment variables and /etc/passwd, setting
1371 unibyte and Latin-1 in .emacs. -- Dave Love */
1372 if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args)
1373 || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args)
1374 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte))
1376 Lisp_Object old_log_max;
1377 Lisp_Object symbol, tail;
1379 symbol = intern ("default-enable-multibyte-characters");
1380 Fset (symbol, Qnil);
1382 if (initialized)
1384 /* Erase pre-dump messages in *Messages* now so no abort. */
1385 old_log_max = Vmessage_log_max;
1386 XSETFASTINT (Vmessage_log_max, 0);
1387 message_dolog ("", 0, 1, 0);
1388 Vmessage_log_max = old_log_max;
1391 for (tail = Vbuffer_alist; CONSP (tail);
1392 tail = XCDR (tail))
1394 Lisp_Object buffer;
1396 buffer = Fcdr (XCAR (tail));
1397 /* Verify that all buffers are empty now, as they
1398 ought to be. */
1399 if (BUF_Z (XBUFFER (buffer)) > BUF_BEG (XBUFFER (buffer)))
1400 abort ();
1401 /* It is safe to do this crudely in an empty buffer. */
1402 XBUFFER (buffer)->enable_multibyte_characters = Qnil;
1407 no_loadup
1408 = argmatch (argv, argc, "-nl", "--no-loadup", 6, NULL, &skip_args);
1411 #ifdef HAVE_X_WINDOWS
1412 /* Stupid kludge to catch command-line display spec. We can't
1413 handle this argument entirely in window system dependent code
1414 because we don't even know which window system dependent code
1415 to run until we've recognized this argument. */
1417 char *displayname = 0;
1418 int count_before = skip_args;
1420 /* Skip any number of -d options, but only use the last one. */
1421 while (1)
1423 int count_before_this = skip_args;
1425 if (argmatch (argv, argc, "-d", "--display", 3, &displayname, &skip_args))
1426 display_arg = 1;
1427 else if (argmatch (argv, argc, "-display", 0, 3, &displayname, &skip_args))
1428 display_arg = 1;
1429 else
1430 break;
1432 count_before = count_before_this;
1435 /* If we have the form --display=NAME,
1436 convert it into -d name.
1437 This requires inserting a new element into argv. */
1438 if (displayname != 0 && skip_args - count_before == 1)
1440 char **new = (char **) xmalloc (sizeof (char *) * (argc + 2));
1441 int j;
1443 for (j = 0; j < count_before + 1; j++)
1444 new[j] = argv[j];
1445 new[count_before + 1] = "-d";
1446 new[count_before + 2] = displayname;
1447 for (j = count_before + 2; j <argc; j++)
1448 new[j + 1] = argv[j];
1449 argv = new;
1450 argc++;
1452 /* Change --display to -d, when its arg is separate. */
1453 else if (displayname != 0 && skip_args > count_before
1454 && argv[count_before + 1][1] == '-')
1455 argv[count_before + 1] = "-d";
1457 /* Don't actually discard this arg. */
1458 skip_args = count_before;
1460 #endif
1462 /* argmatch must not be used after here,
1463 except when bulding temacs
1464 because the -d argument has not been skipped in skip_args. */
1466 #ifdef MSDOS
1467 /* Call early 'cause init_environment needs it. */
1468 init_dosfns ();
1469 /* Set defaults for several environment variables. */
1470 if (initialized)
1471 init_environment (argc, argv, skip_args);
1472 else
1473 tzset ();
1474 #endif /* MSDOS */
1476 #ifdef WINDOWSNT
1477 globals_of_w32 ();
1478 /* Initialize environment from registry settings. */
1479 init_environment (argv);
1480 init_ntproc (); /* must precede init_editfns. */
1481 #endif
1483 #if defined (MAC_OSX) && defined (HAVE_CARBON)
1484 if (initialized)
1485 init_mac_osx_environment ();
1486 #endif
1488 /* egetenv is a pretty low-level facility, which may get called in
1489 many circumstances; it seems flimsy to put off initializing it
1490 until calling init_callproc. */
1491 set_process_environment ();
1492 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1493 if this is not done. Do it after set_process_environment so that we
1494 don't pollute Vprocess_environment. */
1495 /* Setting LANG here will defeat the startup locale processing... */
1496 #ifdef AIX3_2
1497 putenv ("LANG=C");
1498 #endif
1500 init_buffer (); /* Init default directory of main buffer. */
1502 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1503 init_cmdargs (argc, argv, skip_args); /* Must precede init_lread. */
1505 if (initialized)
1507 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1508 Lisp_Object old_log_max;
1509 old_log_max = Vmessage_log_max;
1510 XSETFASTINT (Vmessage_log_max, 0);
1511 message_dolog ("", 0, 1, 0);
1512 Vmessage_log_max = old_log_max;
1515 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1516 init_lread ();
1518 /* Intern the names of all standard functions and variables;
1519 define standard keys. */
1521 if (!initialized)
1523 /* The basic levels of Lisp must come first. */
1524 /* And data must come first of all
1525 for the sake of symbols like error-message. */
1526 #ifndef MAC_OS8
1527 /* Called before init_window_once for Mac OS Classic. */
1528 syms_of_data ();
1529 #endif
1530 syms_of_alloc ();
1531 syms_of_lread ();
1532 syms_of_print ();
1533 syms_of_eval ();
1534 syms_of_fns ();
1535 syms_of_floatfns ();
1537 syms_of_abbrev ();
1538 syms_of_buffer ();
1539 syms_of_bytecode ();
1540 syms_of_callint ();
1541 syms_of_casefiddle ();
1542 syms_of_casetab ();
1543 syms_of_callproc ();
1544 syms_of_category ();
1545 #ifndef MAC_OS8
1546 /* Called before init_window_once for Mac OS Classic. */
1547 syms_of_ccl ();
1548 #endif
1549 syms_of_charset ();
1550 syms_of_cmds ();
1551 #ifndef NO_DIR_LIBRARY
1552 syms_of_dired ();
1553 #endif /* not NO_DIR_LIBRARY */
1554 syms_of_display ();
1555 syms_of_doc ();
1556 syms_of_editfns ();
1557 syms_of_emacs ();
1558 syms_of_fileio ();
1559 syms_of_coding (); /* This should be after syms_of_fileio. */
1560 #ifdef CLASH_DETECTION
1561 syms_of_filelock ();
1562 #endif /* CLASH_DETECTION */
1563 syms_of_indent ();
1564 syms_of_insdel ();
1565 syms_of_keymap ();
1566 syms_of_macros ();
1567 syms_of_marker ();
1568 syms_of_minibuf ();
1569 syms_of_process ();
1570 #ifndef MAC_OS8
1571 /* Called before init_window_once for Mac OS Classic. */
1572 syms_of_search ();
1573 syms_of_frame ();
1574 #endif
1575 syms_of_syntax ();
1576 syms_of_term ();
1577 syms_of_undo ();
1578 #ifdef HAVE_SOUND
1579 syms_of_sound ();
1580 #endif
1581 #ifndef MAC_OS8
1582 /* Called before init_window_once for Mac OS Classic. */
1583 syms_of_textprop ();
1584 #endif
1585 syms_of_composite ();
1586 #ifdef VMS
1587 syms_of_vmsproc ();
1588 #endif /* VMS */
1589 #ifdef WINDOWSNT
1590 syms_of_ntproc ();
1591 #endif /* WINDOWSNT */
1592 syms_of_window ();
1593 syms_of_xdisp ();
1594 #ifdef HAVE_WINDOW_SYSTEM
1595 syms_of_fringe ();
1596 syms_of_image ();
1597 #endif /* HAVE_WINDOW_SYSTEM */
1598 #ifdef HAVE_X_WINDOWS
1599 syms_of_xterm ();
1600 syms_of_xfns ();
1601 syms_of_fontset ();
1602 #ifdef HAVE_X_SM
1603 syms_of_xsmfns ();
1604 #endif
1605 #ifdef HAVE_X11
1606 syms_of_xselect ();
1607 #endif
1608 #endif /* HAVE_X_WINDOWS */
1610 #ifndef HAVE_NTGUI
1611 #ifndef MAC_OS
1612 /* Called before init_window_once for Mac OS Classic. */
1613 syms_of_xmenu ();
1614 #endif
1615 #endif
1617 #ifdef HAVE_NTGUI
1618 syms_of_w32term ();
1619 syms_of_w32fns ();
1620 syms_of_w32select ();
1621 syms_of_w32menu ();
1622 syms_of_fontset ();
1623 #endif /* HAVE_NTGUI */
1625 #if defined (MAC_OSX) && defined (HAVE_CARBON)
1626 syms_of_macterm ();
1627 syms_of_macfns ();
1628 syms_of_macmenu ();
1629 syms_of_macselect ();
1630 syms_of_fontset ();
1631 #endif /* MAC_OSX && HAVE_CARBON */
1633 #ifdef SYMS_SYSTEM
1634 SYMS_SYSTEM;
1635 #endif
1637 #ifdef SYMS_MACHINE
1638 SYMS_MACHINE;
1639 #endif
1641 keys_of_casefiddle ();
1642 keys_of_cmds ();
1643 keys_of_buffer ();
1644 keys_of_keyboard ();
1645 keys_of_keymap ();
1646 keys_of_minibuf ();
1647 keys_of_window ();
1649 else
1651 /* Initialization that must be done even if the global variable
1652 initialized is non zero. */
1653 #ifdef HAVE_NTGUI
1654 globals_of_w32fns ();
1655 globals_of_w32menu ();
1656 globals_of_w32select ();
1657 #endif /* HAVE_NTGUI */
1660 if (!noninteractive)
1662 #ifdef VMS
1663 init_vms_input ();/* init_display calls get_frame_size, that needs this. */
1664 #endif /* VMS */
1665 init_display (); /* Determine terminal type. init_sys_modes uses results. */
1667 #ifndef MAC_OS8
1668 /* Called before init_window_once for Mac OS Classic. */
1669 init_keyboard (); /* This too must precede init_sys_modes. */
1670 #endif
1671 #ifdef VMS
1672 init_vmsproc (); /* And this too. */
1673 #endif /* VMS */
1674 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.). */
1675 init_fns ();
1676 init_xdisp ();
1677 #ifdef HAVE_WINDOW_SYSTEM
1678 init_fringe ();
1679 init_image ();
1680 #endif /* HAVE_WINDOW_SYSTEM */
1681 init_macros ();
1682 init_editfns ();
1683 init_floatfns ();
1684 #ifdef VMS
1685 init_vmsfns ();
1686 #endif /* VMS */
1687 init_process ();
1688 #ifdef HAVE_SOUND
1689 init_sound ();
1690 #endif
1691 init_window ();
1693 if (!initialized)
1695 char *file;
1696 /* Handle -l loadup, args passed by Makefile. */
1697 if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
1698 Vtop_level = Fcons (intern ("load"),
1699 Fcons (build_string (file), Qnil));
1700 /* Unless next switch is -nl, load "loadup.el" first thing. */
1701 if (! no_loadup)
1702 Vtop_level = Fcons (intern ("load"),
1703 Fcons (build_string ("loadup.el"), Qnil));
1706 if (initialized)
1708 #ifdef HAVE_TZSET
1710 /* If the execution TZ happens to be the same as the dump TZ,
1711 change it to some other value and then change it back,
1712 to force the underlying implementation to reload the TZ info.
1713 This is needed on implementations that load TZ info from files,
1714 since the TZ file contents may differ between dump and execution. */
1715 char *tz = getenv ("TZ");
1716 if (tz && !strcmp (tz, dump_tz))
1718 ++*tz;
1719 tzset ();
1720 --*tz;
1723 #endif
1726 /* Set up for profiling. This is known to work on FreeBSD,
1727 GNU/Linux and MinGW. It might work on some other systems too.
1728 Give it a try and tell us if it works on your system. To compile
1729 for profiling, add -pg to the switches your platform uses in
1730 CFLAGS and LDFLAGS. For example:
1731 `make CFLAGS="-pg -g -O -DPROFILING=1" LDFLAGS="-pg -g"'. */
1732 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined(__MINGW32__)
1733 #ifdef PROFILING
1734 if (initialized)
1736 extern void _mcleanup ();
1737 #ifdef __MINGW32__
1738 extern unsigned char etext asm ("etext");
1739 #else
1740 extern char etext;
1741 #endif
1742 extern void safe_bcopy ();
1743 extern void dump_opcode_frequencies ();
1745 atexit (_mcleanup);
1746 /* This uses safe_bcopy because that function comes first in the
1747 Emacs executable. It might be better to use something that
1748 gives the start of the text segment, but start_of_text is not
1749 defined on all systems now. */
1750 monstartup (safe_bcopy, &etext);
1752 else
1753 moncontrol (0);
1754 #endif
1755 #endif
1757 initialized = 1;
1759 #ifdef LOCALTIME_CACHE
1760 /* Some versions of localtime have a bug. They cache the value of the time
1761 zone rather than looking it up every time. Since localtime() is
1762 called to bolt the undumping time into the undumped emacs, this
1763 results in localtime ignoring the TZ environment variable.
1764 This flushes the new TZ value into localtime. */
1765 tzset ();
1766 #endif /* defined (LOCALTIME_CACHE) */
1768 /* Enter editor command loop. This never returns. */
1769 Frecursive_edit ();
1770 /* NOTREACHED */
1771 return 0;
1774 /* Sort the args so we can find the most important ones
1775 at the beginning of argv. */
1777 /* First, here's a table of all the standard options. */
1779 struct standard_args
1781 char *name;
1782 char *longname;
1783 int priority;
1784 int nargs;
1787 struct standard_args standard_args[] =
1789 { "-version", "--version", 150, 0 },
1790 #ifdef HAVE_SHM
1791 { "-nl", "--no-shared-memory", 140, 0 },
1792 #endif
1793 #ifdef VMS
1794 { "-map", "--map-data", 130, 0 },
1795 #endif
1796 { "-t", "--terminal", 120, 1 },
1797 { "-nw", "--no-window-system", 110, 0 },
1798 { "-nw", "--no-windows", 110, 0 },
1799 { "-batch", "--batch", 100, 0 },
1800 { "-script", "--script", 100, 1 },
1801 { "-help", "--help", 90, 0 },
1802 { "-no-unibyte", "--no-unibyte", 83, 0 },
1803 { "-multibyte", "--multibyte", 82, 0 },
1804 { "-unibyte", "--unibyte", 81, 0 },
1805 { "-no-multibyte", "--no-multibyte", 80, 0 },
1806 { "-nl", "--no-loadup", 70, 0 },
1807 /* -d must come last before the options handled in startup.el. */
1808 { "-d", "--display", 60, 1 },
1809 { "-display", 0, 60, 1 },
1810 /* Now for the options handled in startup.el. */
1811 { "-Q", "--quick", 55, 0 },
1812 { "-quick", 0, 55, 0 },
1813 { "-q", "--no-init-file", 50, 0 },
1814 { "-no-init-file", 0, 50, 0 },
1815 { "-no-site-file", "--no-site-file", 40, 0 },
1816 { "-no-splash", "--no-splash", 40, 0 },
1817 { "-u", "--user", 30, 1 },
1818 { "-user", 0, 30, 1 },
1819 { "-debug-init", "--debug-init", 20, 0 },
1820 { "-nbi", "--no-bitmap-icon", 15, 0 },
1821 { "-iconic", "--iconic", 15, 0 },
1822 { "-D", "--basic-display", 12, 0},
1823 { "-basic-display", 0, 12, 0},
1824 { "-bg", "--background-color", 10, 1 },
1825 { "-background", 0, 10, 1 },
1826 { "-fg", "--foreground-color", 10, 1 },
1827 { "-foreground", 0, 10, 1 },
1828 { "-bd", "--border-color", 10, 1 },
1829 { "-bw", "--border-width", 10, 1 },
1830 { "-ib", "--internal-border", 10, 1 },
1831 { "-ms", "--mouse-color", 10, 1 },
1832 { "-cr", "--cursor-color", 10, 1 },
1833 { "-nbc", "--no-blinking-cursor", 10, 0 },
1834 { "-fn", "--font", 10, 1 },
1835 { "-font", 0, 10, 1 },
1836 { "-fs", "--fullscreen", 10, 0 },
1837 { "-fw", "--fullwidth", 10, 0 },
1838 { "-fh", "--fullheight", 10, 0 },
1839 { "-g", "--geometry", 10, 1 },
1840 { "-geometry", 0, 10, 1 },
1841 { "-T", "--title", 10, 1 },
1842 { "-title", 0, 10, 1 },
1843 { "-name", "--name", 10, 1 },
1844 { "-xrm", "--xrm", 10, 1 },
1845 { "-r", "--reverse-video", 5, 0 },
1846 { "-rv", 0, 5, 0 },
1847 { "-reverse", 0, 5, 0 },
1848 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1849 { "-vb", "--vertical-scroll-bars", 5, 0 },
1850 { "-color", "--color", 5, 0},
1851 /* These have the same priority as ordinary file name args,
1852 so they are not reordered with respect to those. */
1853 { "-L", "--directory", 0, 1 },
1854 { "-directory", 0, 0, 1 },
1855 { "-l", "--load", 0, 1 },
1856 { "-load", 0, 0, 1 },
1857 { "-scriptload", "--scriptload", 0, 1 },
1858 { "-f", "--funcall", 0, 1 },
1859 { "-funcall", 0, 0, 1 },
1860 { "-eval", "--eval", 0, 1 },
1861 { "-execute", "--execute", 0, 1 },
1862 { "-find-file", "--find-file", 0, 1 },
1863 { "-visit", "--visit", 0, 1 },
1864 { "-file", "--file", 0, 1 },
1865 { "-insert", "--insert", 0, 1 },
1866 /* This should be processed after ordinary file name args and the like. */
1867 { "-kill", "--kill", -10, 0 },
1870 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1871 so that the highest priority ones come first.
1872 Do not change the order of elements of equal priority.
1873 If an option takes an argument, keep it and its argument together.
1875 If an option that takes no argument appears more
1876 than once, eliminate all but one copy of it. */
1878 static void
1879 sort_args (argc, argv)
1880 int argc;
1881 char **argv;
1883 char **new = (char **) xmalloc (sizeof (char *) * argc);
1884 /* For each element of argv,
1885 the corresponding element of options is:
1886 0 for an option that takes no arguments,
1887 1 for an option that takes one argument, etc.
1888 -1 for an ordinary non-option argument. */
1889 int *options = (int *) xmalloc (sizeof (int) * argc);
1890 int *priority = (int *) xmalloc (sizeof (int) * argc);
1891 int to = 1;
1892 int incoming_used = 1;
1893 int from;
1894 int i;
1896 /* Categorize all the options,
1897 and figure out which argv elts are option arguments. */
1898 for (from = 1; from < argc; from++)
1900 options[from] = -1;
1901 priority[from] = 0;
1902 if (argv[from][0] == '-')
1904 int match, thislen;
1905 char *equals;
1907 /* If we have found "--", don't consider
1908 any more arguments as options. */
1909 if (argv[from][1] == '-' && argv[from][2] == 0)
1911 /* Leave the "--", and everything following it, at the end. */
1912 for (; from < argc; from++)
1914 priority[from] = -100;
1915 options[from] = -1;
1917 break;
1920 /* Look for a match with a known old-fashioned option. */
1921 for (i = 0; i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1922 if (!strcmp (argv[from], standard_args[i].name))
1924 options[from] = standard_args[i].nargs;
1925 priority[from] = standard_args[i].priority;
1926 if (from + standard_args[i].nargs >= argc)
1927 fatal ("Option `%s' requires an argument\n", argv[from]);
1928 from += standard_args[i].nargs;
1929 goto done;
1932 /* Look for a match with a known long option.
1933 MATCH is -1 if no match so far, -2 if two or more matches so far,
1934 >= 0 (the table index of the match) if just one match so far. */
1935 if (argv[from][1] == '-')
1937 match = -1;
1938 thislen = strlen (argv[from]);
1939 equals = index (argv[from], '=');
1940 if (equals != 0)
1941 thislen = equals - argv[from];
1943 for (i = 0;
1944 i < sizeof (standard_args) / sizeof (standard_args[0]); i++)
1945 if (standard_args[i].longname
1946 && !strncmp (argv[from], standard_args[i].longname,
1947 thislen))
1949 if (match == -1)
1950 match = i;
1951 else
1952 match = -2;
1955 /* If we found exactly one match, use that. */
1956 if (match >= 0)
1958 options[from] = standard_args[match].nargs;
1959 priority[from] = standard_args[match].priority;
1960 /* If --OPTION=VALUE syntax is used,
1961 this option uses just one argv element. */
1962 if (equals != 0)
1963 options[from] = 0;
1964 if (from + options[from] >= argc)
1965 fatal ("Option `%s' requires an argument\n", argv[from]);
1966 from += options[from];
1969 done: ;
1973 /* Copy the arguments, in order of decreasing priority, to NEW. */
1974 new[0] = argv[0];
1975 while (incoming_used < argc)
1977 int best = -1;
1978 int best_priority = -9999;
1980 /* Find the highest priority remaining option.
1981 If several have equal priority, take the first of them. */
1982 for (from = 1; from < argc; from++)
1984 if (argv[from] != 0 && priority[from] > best_priority)
1986 best_priority = priority[from];
1987 best = from;
1989 /* Skip option arguments--they are tied to the options. */
1990 if (options[from] > 0)
1991 from += options[from];
1994 if (best < 0)
1995 abort ();
1997 /* Copy the highest priority remaining option, with its args, to NEW.
1998 Unless it is a duplicate of the previous one. */
1999 if (! (options[best] == 0
2000 && ! strcmp (new[to - 1], argv[best])))
2002 new[to++] = argv[best];
2003 for (i = 0; i < options[best]; i++)
2004 new[to++] = argv[best + i + 1];
2007 incoming_used += 1 + (options[best] > 0 ? options[best] : 0);
2009 /* Clear out this option in ARGV. */
2010 argv[best] = 0;
2011 for (i = 0; i < options[best]; i++)
2012 argv[best + i + 1] = 0;
2015 /* If duplicate options were deleted, fill up extra space with null ptrs. */
2016 while (to < argc)
2017 new[to++] = 0;
2019 bcopy (new, argv, sizeof (char *) * argc);
2021 xfree (options);
2022 xfree (new);
2023 xfree (priority);
2026 DEFUN ("kill-emacs", Fkill_emacs, Skill_emacs, 0, 1, "P",
2027 doc: /* Exit the Emacs job and kill it.
2028 If ARG is an integer, return ARG as the exit program code.
2029 If ARG is a string, stuff it as keyboard input.
2031 The value of `kill-emacs-hook', if not void,
2032 is a list of functions (of no args),
2033 all of which are called before Emacs is actually killed. */)
2034 (arg)
2035 Lisp_Object arg;
2037 struct gcpro gcpro1;
2039 GCPRO1 (arg);
2041 if (feof (stdin))
2042 arg = Qt;
2044 if (!NILP (Vrun_hooks) && !noninteractive)
2045 call1 (Vrun_hooks, intern ("kill-emacs-hook"));
2047 UNGCPRO;
2049 /* Is it really necessary to do this deassign
2050 when we are going to exit anyway? */
2051 /* #ifdef VMS
2052 stop_vms_input ();
2053 #endif */
2055 shut_down_emacs (0, 0, STRINGP (arg) ? arg : Qnil);
2057 /* If we have an auto-save list file,
2058 kill it because we are exiting Emacs deliberately (not crashing).
2059 Do it after shut_down_emacs, which does an auto-save. */
2060 if (STRINGP (Vauto_save_list_file_name))
2061 unlink (SDATA (Vauto_save_list_file_name));
2063 exit (INTEGERP (arg) ? XINT (arg) : EXIT_SUCCESS);
2064 /* NOTREACHED */
2065 return Qnil;
2069 /* Perform an orderly shutdown of Emacs. Autosave any modified
2070 buffers, kill any child processes, clean up the terminal modes (if
2071 we're in the foreground), and other stuff like that. Don't perform
2072 any redisplay; this may be called when Emacs is shutting down in
2073 the background, or after its X connection has died.
2075 If SIG is a signal number, print a message for it.
2077 This is called by fatal signal handlers, X protocol error handlers,
2078 and Fkill_emacs. */
2080 void
2081 shut_down_emacs (sig, no_x, stuff)
2082 int sig, no_x;
2083 Lisp_Object stuff;
2085 /* Prevent running of hooks from now on. */
2086 Vrun_hooks = Qnil;
2088 /* Don't update display from now on. */
2089 Vinhibit_redisplay = Qt;
2091 /* If we are controlling the terminal, reset terminal modes. */
2092 #ifdef EMACS_HAVE_TTY_PGRP
2094 int pgrp = EMACS_GETPGRP (0);
2096 int tpgrp;
2097 if (EMACS_GET_TTY_PGRP (0, &tpgrp) != -1
2098 && tpgrp == pgrp)
2100 fflush (stdout);
2101 reset_sys_modes ();
2102 if (sig && sig != SIGTERM)
2103 fprintf (stderr, "Fatal error (%d)", sig);
2106 #else
2107 fflush (stdout);
2108 reset_sys_modes ();
2109 #endif
2111 stuff_buffered_input (stuff);
2113 #ifdef subprocesses
2114 inhibit_sentinels = 1;
2115 #endif
2116 kill_buffer_processes (Qnil);
2117 Fdo_auto_save (Qt, Qnil);
2119 #ifdef CLASH_DETECTION
2120 unlock_all_files ();
2121 #endif
2123 #ifdef VMS
2124 kill_vms_processes ();
2125 #endif
2127 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2128 #ifdef HAVE_X_WINDOWS
2129 /* It's not safe to call intern here. Maybe we are crashing. */
2130 if (!noninteractive && SYMBOLP (Vwindow_system)
2131 && SCHARS (SYMBOL_NAME (Vwindow_system)) == 1
2132 && SREF (SYMBOL_NAME (Vwindow_system), 0) == 'x'
2133 && ! no_x)
2134 Fx_close_current_connection ();
2135 #endif /* HAVE_X_WINDOWS */
2136 #endif
2138 #ifdef SIGIO
2139 /* There is a tendency for a SIGIO signal to arrive within exit,
2140 and cause a SIGHUP because the input descriptor is already closed. */
2141 unrequest_sigio ();
2142 signal (SIGIO, SIG_IGN);
2143 #endif
2145 #ifdef WINDOWSNT
2146 term_ntproc ();
2147 #endif
2149 /* Do this only if terminating normally, we want glyph matrices
2150 etc. in a core dump. */
2151 if (sig == 0 || sig == SIGTERM)
2153 check_glyph_memory ();
2154 check_message_stack ();
2157 #ifdef MSDOS
2158 dos_cleanup ();
2159 #endif
2164 #ifndef CANNOT_DUMP
2166 #ifdef HAVE_SHM
2168 DEFUN ("dump-emacs-data", Fdump_emacs_data, Sdump_emacs_data, 1, 1, 0,
2169 doc: /* Dump current state of Emacs into data file FILENAME.
2170 This function exists on systems that use HAVE_SHM. */)
2171 (filename)
2172 Lisp_Object filename;
2174 extern char my_edata[];
2175 Lisp_Object tem;
2177 check_pure_size ();
2178 CHECK_STRING (filename);
2179 filename = Fexpand_file_name (filename, Qnil);
2181 tem = Vpurify_flag;
2182 Vpurify_flag = Qnil;
2184 fflush (stdout);
2185 /* Tell malloc where start of impure now is. */
2186 /* Also arrange for warnings when nearly out of space. */
2187 #ifndef SYSTEM_MALLOC
2188 memory_warnings (my_edata, malloc_warning);
2189 #endif
2190 map_out_data (SDATA (filename));
2192 Vpurify_flag = tem;
2194 return Qnil;
2197 #else /* not HAVE_SHM */
2199 DEFUN ("dump-emacs", Fdump_emacs, Sdump_emacs, 2, 2, 0,
2200 doc: /* Dump current state of Emacs into executable file FILENAME.
2201 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2202 This is used in the file `loadup.el' when building Emacs.
2204 You must run Emacs in batch mode in order to dump it. */)
2205 (filename, symfile)
2206 Lisp_Object filename, symfile;
2208 extern char my_edata[];
2209 Lisp_Object tem;
2210 Lisp_Object symbol;
2211 int count = SPECPDL_INDEX ();
2213 check_pure_size ();
2215 if (! noninteractive)
2216 error ("Dumping Emacs works only in batch mode");
2218 #ifdef GNU_LINUX
2219 if (heap_bss_diff > MAX_HEAP_BSS_DIFF)
2221 fprintf (stderr, "**************************************************\n");
2222 fprintf (stderr, "Warning: Your system has a gap between BSS and the\n");
2223 fprintf (stderr, "heap (%lu byte). This usually means that exec-shield\n",
2224 heap_bss_diff);
2225 fprintf (stderr, "or something similar is in effect. The dump may\n");
2226 fprintf (stderr, "fail because of this. See the section about \n");
2227 fprintf (stderr, "exec-shield in etc/PROBLEMS for more information.\n");
2228 fprintf (stderr, "**************************************************\n");
2230 #endif /* GNU_LINUX */
2232 /* Bind `command-line-processed' to nil before dumping,
2233 so that the dumped Emacs will process its command line
2234 and set up to work with X windows if appropriate. */
2235 symbol = intern ("command-line-processed");
2236 specbind (symbol, Qnil);
2238 CHECK_STRING (filename);
2239 filename = Fexpand_file_name (filename, Qnil);
2240 if (!NILP (symfile))
2242 CHECK_STRING (symfile);
2243 if (SCHARS (symfile))
2244 symfile = Fexpand_file_name (symfile, Qnil);
2247 tem = Vpurify_flag;
2248 Vpurify_flag = Qnil;
2250 #ifdef HAVE_TZSET
2251 set_time_zone_rule (dump_tz);
2252 #ifndef LOCALTIME_CACHE
2253 /* Force a tz reload, since set_time_zone_rule doesn't. */
2254 tzset ();
2255 #endif
2256 #endif
2258 fflush (stdout);
2259 #ifdef VMS
2260 mapout_data (SDATA (filename));
2261 #else
2262 /* Tell malloc where start of impure now is. */
2263 /* Also arrange for warnings when nearly out of space. */
2264 #ifndef SYSTEM_MALLOC
2265 #ifndef WINDOWSNT
2266 /* On Windows, this was done before dumping, and that once suffices.
2267 Meanwhile, my_edata is not valid on Windows. */
2268 memory_warnings (my_edata, malloc_warning);
2269 #endif /* not WINDOWSNT */
2270 #endif
2271 #if !defined (SYSTEM_MALLOC) && defined (HAVE_GTK_AND_PTHREAD) && !defined SYNC_INPUT
2272 /* Pthread may call malloc before main, and then we will get an endless
2273 loop, because pthread_self (see alloc.c) calls malloc the first time
2274 it is called on some systems. */
2275 reset_malloc_hooks ();
2276 #endif
2277 #ifdef DOUG_LEA_MALLOC
2278 malloc_state_ptr = malloc_get_state ();
2279 #endif
2281 #ifdef USE_MMAP_FOR_BUFFERS
2282 mmap_set_vars (0);
2283 #endif
2284 unexec (SDATA (filename),
2285 !NILP (symfile) ? SDATA (symfile) : 0, my_edata, 0, 0);
2286 #ifdef USE_MMAP_FOR_BUFFERS
2287 mmap_set_vars (1);
2288 #endif
2289 #ifdef DOUG_LEA_MALLOC
2290 free (malloc_state_ptr);
2291 #endif
2292 #endif /* not VMS */
2294 Vpurify_flag = tem;
2296 return unbind_to (count, Qnil);
2299 #endif /* not HAVE_SHM */
2301 #endif /* not CANNOT_DUMP */
2303 #if HAVE_SETLOCALE
2304 /* Recover from setlocale (LC_ALL, ""). */
2305 void
2306 fixup_locale ()
2308 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2309 so that numbers are read and printed properly for Emacs Lisp. */
2310 setlocale (LC_NUMERIC, "C");
2313 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2314 DESIRED_LOCALE. */
2315 static void
2316 synchronize_locale (category, plocale, desired_locale)
2317 int category;
2318 Lisp_Object *plocale;
2319 Lisp_Object desired_locale;
2321 if (! EQ (*plocale, desired_locale))
2323 *plocale = desired_locale;
2324 setlocale (category, (STRINGP (desired_locale)
2325 ? (char *) SDATA (desired_locale)
2326 : ""));
2330 /* Set system time locale to match Vsystem_time_locale, if possible. */
2331 void
2332 synchronize_system_time_locale ()
2334 synchronize_locale (LC_TIME, &Vprevious_system_time_locale,
2335 Vsystem_time_locale);
2338 /* Set system messages locale to match Vsystem_messages_locale, if
2339 possible. */
2340 void
2341 synchronize_system_messages_locale ()
2343 #ifdef LC_MESSAGES
2344 synchronize_locale (LC_MESSAGES, &Vprevious_system_messages_locale,
2345 Vsystem_messages_locale);
2346 #endif
2348 #endif /* HAVE_SETLOCALE */
2350 #ifndef SEPCHAR
2351 #define SEPCHAR ':'
2352 #endif
2354 Lisp_Object
2355 decode_env_path (evarname, defalt)
2356 char *evarname, *defalt;
2358 register char *path, *p;
2359 Lisp_Object lpath, element, tem;
2361 /* It's okay to use getenv here, because this function is only used
2362 to initialize variables when Emacs starts up, and isn't called
2363 after that. */
2364 if (evarname != 0)
2365 path = (char *) getenv (evarname);
2366 else
2367 path = 0;
2368 if (!path)
2369 path = defalt;
2370 #ifdef DOS_NT
2371 /* Ensure values from the environment use the proper directory separator. */
2372 if (path)
2374 p = alloca (strlen (path) + 1);
2375 strcpy (p, path);
2376 path = p;
2378 if ('/' == DIRECTORY_SEP)
2379 dostounix_filename (path);
2380 else
2381 unixtodos_filename (path);
2383 #endif
2384 lpath = Qnil;
2385 while (1)
2387 p = index (path, SEPCHAR);
2388 if (!p) p = path + strlen (path);
2389 element = (p - path ? make_string (path, p - path)
2390 : build_string ("."));
2392 /* Add /: to the front of the name
2393 if it would otherwise be treated as magic. */
2394 tem = Ffind_file_name_handler (element, Qt);
2396 /* However, if the handler says "I'm safe",
2397 don't bother adding /:. */
2398 if (SYMBOLP (tem))
2400 Lisp_Object prop;
2401 prop = Fget (tem, intern ("safe-magic"));
2402 if (! NILP (prop))
2403 tem = Qnil;
2406 if (! NILP (tem))
2407 element = concat2 (build_string ("/:"), element);
2409 lpath = Fcons (element, lpath);
2410 if (*p)
2411 path = p + 1;
2412 else
2413 break;
2415 return Fnreverse (lpath);
2418 void
2419 syms_of_emacs ()
2421 Qfile_name_handler_alist = intern ("file-name-handler-alist");
2422 staticpro (&Qfile_name_handler_alist);
2424 #ifndef CANNOT_DUMP
2425 #ifdef HAVE_SHM
2426 defsubr (&Sdump_emacs_data);
2427 #else
2428 defsubr (&Sdump_emacs);
2429 #endif
2430 #endif
2432 defsubr (&Skill_emacs);
2434 defsubr (&Sinvocation_name);
2435 defsubr (&Sinvocation_directory);
2437 DEFVAR_LISP ("command-line-args", &Vcommand_line_args,
2438 doc: /* Args passed by shell to Emacs, as a list of strings.
2439 Many arguments are deleted from the list as they are processed. */);
2441 DEFVAR_LISP ("system-type", &Vsystem_type,
2442 doc: /* Value is symbol indicating type of operating system you are using.
2443 Special values:
2444 `gnu/linux' compiled for a GNU/Linux system.
2445 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2446 `macos' compiled for Mac OS 9.
2447 `ms-dos' compiled as an MS-DOS application.
2448 `windows-nt' compiled as a native W32 application.
2449 `cygwin' compiled using the Cygwin library.
2450 `vax-vms' or
2451 `axp-vms' compiled for a (Open)VMS system.
2452 Anything else indicates some sort of Unix system. */);
2453 Vsystem_type = intern (SYSTEM_TYPE);
2455 DEFVAR_LISP ("system-configuration", &Vsystem_configuration,
2456 doc: /* Value is string indicating configuration Emacs was built for.
2457 On MS-Windows, the value reflects the OS flavor and version on which
2458 Emacs is running. */);
2459 Vsystem_configuration = build_string (EMACS_CONFIGURATION);
2461 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options,
2462 doc: /* String containing the configuration options Emacs was built with. */);
2463 Vsystem_configuration_options = build_string (EMACS_CONFIG_OPTIONS);
2465 DEFVAR_BOOL ("noninteractive", &noninteractive1,
2466 doc: /* Non-nil means Emacs is running without interactive terminal. */);
2468 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook,
2469 doc: /* Hook to be run when kill-emacs is called.
2470 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2471 in other similar situations), functions placed on this hook should not
2472 expect to be able to interact with the user. To ask for confirmation,
2473 see `kill-emacs-query-functions' instead.
2475 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2476 Vkill_emacs_hook = Qnil;
2478 empty_string = build_string ("");
2479 staticpro (&empty_string);
2481 DEFVAR_INT ("emacs-priority", &emacs_priority,
2482 doc: /* Priority for Emacs to run at.
2483 This value is effective only if set before Emacs is dumped,
2484 and only if the Emacs executable is installed with setuid to permit
2485 it to change priority. (Emacs sets its uid back to the real uid.)
2486 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2487 before you compile Emacs, to enable the code for this feature. */);
2488 emacs_priority = 0;
2490 DEFVAR_LISP ("path-separator", &Vpath_separator,
2491 doc: /* String containing the character that separates directories in
2492 search paths, such as PATH and other similar environment variables. */);
2494 char c = SEPCHAR;
2495 Vpath_separator = make_string (&c, 1);
2498 DEFVAR_LISP ("invocation-name", &Vinvocation_name,
2499 doc: /* The program name that was used to run Emacs.
2500 Any directory names are omitted. */);
2502 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory,
2503 doc: /* The directory in which the Emacs executable was found, to run it.
2504 The value is nil if that directory's name is not known. */);
2506 DEFVAR_LISP ("installation-directory", &Vinstallation_directory,
2507 doc: /* A directory within which to look for the `lib-src' and `etc' directories.
2508 This is non-nil when we can't find those directories in their standard
2509 installed locations, but we can find them
2510 near where the Emacs executable was found. */);
2511 Vinstallation_directory = Qnil;
2513 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale,
2514 doc: /* System locale for messages. */);
2515 Vsystem_messages_locale = Qnil;
2517 DEFVAR_LISP ("previous-system-messages-locale",
2518 &Vprevious_system_messages_locale,
2519 doc: /* Most recently used system locale for messages. */);
2520 Vprevious_system_messages_locale = Qnil;
2522 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale,
2523 doc: /* System locale for time. */);
2524 Vsystem_time_locale = Qnil;
2526 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale,
2527 doc: /* Most recently used system locale for time. */);
2528 Vprevious_system_time_locale = Qnil;
2531 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2532 (do not change this comment) */