1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1997, 1998, 1999,
4 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
5 Free Software Foundation, Inc.
7 This file is part of GNU Emacs.
9 GNU Emacs is free software: you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation, either version 3 of the License, or
12 (at your option) any later version.
14 GNU Emacs is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
28 #include <sys/types.h>
35 #include <windows.h> /* just for w32.h */
37 #include "w32heap.h" /* for prototype of sbrk */
40 #ifdef NS_IMPL_GNUSTEP
41 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
42 #include <GNUstepBase/GSConfig.h>
47 #include "intervals.h"
52 #include "blockinput.h"
53 #include "syssignal.h"
56 #include "termhooks.h"
74 #include <sys/resource.h>
77 #ifdef HAVE_PERSONALITY_LINUX32
78 #include <sys/personality.h>
88 #define setpgrp setpgid
92 /* If you change the following line, remember to update
93 msdos/mainmake.v2 which gleans the Emacs version from it! */
94 static const char emacs_version
[] = "24.0.50";
95 static const char emacs_copyright
[] = "Copyright (C) 2011 Free Software Foundation, Inc.";
97 /* Make these values available in GDB, which doesn't see macros. */
100 int gdb_use_lsb EXTERNALLY_VISIBLE
= 1;
102 int gdb_use_lsb EXTERNALLY_VISIBLE
= 0;
104 #ifndef USE_LISP_UNION_TYPE
105 int gdb_use_union EXTERNALLY_VISIBLE
= 0;
107 int gdb_use_union EXTERNALLY_VISIBLE
= 1;
109 EMACS_INT gdb_valbits EXTERNALLY_VISIBLE
= VALBITS
;
110 EMACS_INT gdb_gctypebits EXTERNALLY_VISIBLE
= GCTYPEBITS
;
111 #if defined (DATA_SEG_BITS) && ! defined (USE_LSB_TAG)
112 EMACS_INT gdb_data_seg_bits EXTERNALLY_VISIBLE
= DATA_SEG_BITS
;
114 EMACS_INT gdb_data_seg_bits EXTERNALLY_VISIBLE
= 0;
116 EMACS_INT PVEC_FLAG EXTERNALLY_VISIBLE
= PSEUDOVECTOR_FLAG
;
117 EMACS_INT gdb_array_mark_flag EXTERNALLY_VISIBLE
= ARRAY_MARK_FLAG
;
118 /* GDB might say "No enum type named pvec_type" if we don't have at
119 least one symbol with that type, and then xbacktrace could fail. */
120 enum pvec_type gdb_pvec_type EXTERNALLY_VISIBLE
= PVEC_TYPE_MASK
;
122 /* Empty lisp strings. To avoid having to build any others. */
123 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
125 /* Set nonzero after Emacs has started up the first time.
126 Prevents reinitialization of the Lisp world and keymaps
127 on subsequent starts. */
130 #ifdef DOUG_LEA_MALLOC
131 /* Preserves a pointer to the memory allocated that copies that
132 static data inside glibc's malloc. */
133 void *malloc_state_ptr
;
134 /* From glibc, a routine that returns a copy of the malloc internal state. */
135 extern void *malloc_get_state (void);
136 /* From glibc, a routine that overwrites the malloc internal state. */
137 extern int malloc_set_state (void*);
138 /* Non-zero if the MALLOC_CHECK_ environment variable was set while
139 dumping. Used to work around a bug in glibc's malloc. */
140 int malloc_using_checking
;
143 Lisp_Object Qfile_name_handler_alist
;
145 Lisp_Object Qrisky_local_variable
;
147 /* If non-zero, emacs should not attempt to use a window-specific code,
148 but instead should use the virtual terminal under which it was started. */
149 int inhibit_window_system
;
151 /* If non-zero, a filter or a sentinel is running. Tested to save the match
152 data on the first attempt to change it inside asynchronous code. */
153 int running_asynch_code
;
155 #if defined(HAVE_X_WINDOWS) || defined(HAVE_NS)
156 /* If non-zero, -d was specified, meaning we're using some window system. */
160 /* An address near the bottom of the stack.
161 Tells GC how to save a copy of the stack. */
164 /* The address where the heap starts (from the first sbrk (0) call). */
165 static void *my_heap_start
;
167 /* The gap between BSS end and heap start as far as we can tell. */
168 static unsigned long heap_bss_diff
;
170 /* If the gap between BSS end and heap start is larger than this
171 output a warning in dump-emacs. */
172 #define MAX_HEAP_BSS_DIFF (1024*1024)
174 /* Nonzero means running Emacs without interactive terminal. */
178 /* Nonzero means remove site-lisp directories from load-path. */
181 /* Name for the server started by the daemon.*/
182 static char *daemon_name
;
184 /* Pipe used to send exit notification to the daemon parent at
188 /* Save argv and argc. */
192 static void sort_args (int argc
, char **argv
);
193 void syms_of_emacs (void);
195 /* MSVC needs each string be shorter than 2048 bytes, so the usage
196 strings below are split to not overflow this limit. */
198 Usage: %s [OPTION-OR-FILENAME]...\n\
200 Run Emacs, the extensible, customizable, self-documenting real-time\n\
201 display editor. The recommended way to start Emacs for normal editing\n\
202 is with no options at all.\n\
204 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
205 read the main documentation for these command-line arguments.\n\
207 Initialization options:\n\
209 --batch do not do interactive display; implies -q\n\
210 --chdir DIR change to directory DIR\n\
211 --daemon start a server in the background\n\
212 --debug-init enable Emacs Lisp debugger for init file\n\
213 --display, -d DISPLAY use X server DISPLAY\n\
214 --no-desktop do not load a saved desktop\n\
215 --no-init-file, -q load neither ~/.emacs nor default.el\n\
216 --no-shared-memory, -nl do not use shared memory\n\
217 --no-site-file do not load site-start.el\n\
218 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
219 --no-splash do not display a splash screen on startup\n\
220 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
221 --quick, -Q equivalent to:\n\
222 -q --no-site-file --no-site-lisp --no-splash\n\
223 --script FILE run FILE as an Emacs Lisp script\n\
224 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
225 --user, -u USER load ~USER/.emacs instead of your own\n\
231 FILE visit FILE using find-file\n\
232 +LINE go to line LINE in next FILE\n\
233 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
234 --directory, -L DIR add DIR to variable load-path\n\
235 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
236 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
237 --file FILE visit FILE using find-file\n\
238 --find-file FILE visit FILE using find-file\n\
239 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
240 --insert FILE insert contents of FILE into current buffer\n\
241 --kill exit without asking for confirmation\n\
242 --load, -l FILE load Emacs Lisp FILE using the load function\n\
243 --visit FILE visit FILE using find-file\n\
249 --background-color, -bg COLOR window background color\n\
250 --basic-display, -D disable many display features;\n\
251 used for debugging Emacs\n\
252 --border-color, -bd COLOR main border color\n\
253 --border-width, -bw WIDTH width of main border\n\
254 --color, --color=MODE override color mode for character terminals;\n\
255 MODE defaults to `auto', and can also\n\
256 be `never', `auto', `always',\n\
257 or a mode name like `ansi8'\n\
258 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
259 --font, -fn FONT default font; must be fixed-width\n\
260 --foreground-color, -fg COLOR window foreground color\n\
261 --fullheight, -fh make the first frame high as the screen\n\
262 --fullscreen, -fs make first frame fullscreen\n\
263 --fullwidth, -fw make the first frame wide as the screen\n\
264 --maximized, -mm make the first frame maximized\n\
265 --geometry, -g GEOMETRY window geometry\n\
266 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
267 --iconic start Emacs in iconified state\n\
268 --internal-border, -ib WIDTH width between text and main border\n\
269 --line-spacing, -lsp PIXELS additional space to put between lines\n\
270 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
271 --name NAME title for initial Emacs frame\n\
272 --no-blinking-cursor, -nbc disable blinking cursor\n\
273 --reverse-video, -r, -rv switch foreground and background\n\
274 --title, -T TITLE title for initial Emacs frame\n\
275 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
276 --xrm XRESOURCES set additional X resources\n\
277 --parent-id XID set parent window\n\
278 --help display this help and exit\n\
279 --version output version information and exit\n\
283 You can generally also specify long option names with a single -; for\n\
284 example, -batch as well as --batch. You can use any unambiguous\n\
285 abbreviation for a --option.\n\
287 Various environment variables and window system resources also affect\n\
288 Emacs' operation. See the main documentation.\n\
290 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
291 section of the Emacs manual or the file BUGS.\n"
294 /* Signal code for the fatal signal that was received. */
295 int fatal_error_code
;
297 /* Nonzero if handling a fatal error already. */
298 int fatal_error_in_progress
;
300 /* If non-null, call this function from fatal_error_signal before
301 committing suicide. */
303 void (*fatal_error_signal_hook
) (void);
305 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
306 /* When compiled with GTK and running under Gnome,
307 multiple threads may be created. Keep track of our main
308 thread to make sure signals are delivered to it (see syssignal.h). */
310 pthread_t main_thread
;
314 /* Handle bus errors, invalid instruction, etc. */
316 fatal_error_signal (int sig
)
318 SIGNAL_THREAD_CHECK (sig
);
319 fatal_error_code
= sig
;
320 signal (sig
, SIG_DFL
);
322 TOTALLY_UNBLOCK_INPUT
;
324 /* If fatal error occurs in code below, avoid infinite recursion. */
325 if (! fatal_error_in_progress
)
327 fatal_error_in_progress
= 1;
329 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
330 Fkill_emacs (make_number (sig
));
332 shut_down_emacs (sig
, 0, Qnil
);
335 /* Signal the same code; this time it will really be fatal.
336 Remember that since we're in a signal handler, the signal we're
337 going to send is probably blocked, so we have to unblock it if we
338 want to really receive it. */
340 sigunblock (sigmask (fatal_error_code
));
343 if (fatal_error_signal_hook
)
344 fatal_error_signal_hook ();
346 kill (getpid (), fatal_error_code
);
351 /* Handler for SIGDANGER. */
353 memory_warning_signal (sig
)
356 signal (sig
, memory_warning_signal
);
357 SIGNAL_THREAD_CHECK (sig
);
359 malloc_warning ("Operating system warns that virtual memory is running low.\n");
361 /* It might be unsafe to call do_auto_save now. */
362 force_auto_save_soon ();
366 /* We define abort, rather than using it from the library,
367 so that GDB can return from a breakpoint here.
368 MSDOS has its own definition in msdos.c. */
370 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
375 kill (getpid (), SIGABRT
);
376 /* This shouldn't be executed, but it prevents a warning. */
382 /* Code for dealing with Lisp access to the Unix command line. */
385 init_cmdargs (int argc
, char **argv
, int skip_args
)
388 Lisp_Object name
, dir
, tem
;
389 int count
= SPECPDL_INDEX ();
390 Lisp_Object raw_name
;
395 raw_name
= build_string (argv
[0]);
397 /* Add /: to the front of the name
398 if it would otherwise be treated as magic. */
399 tem
= Ffind_file_name_handler (raw_name
, Qt
);
401 raw_name
= concat2 (build_string ("/:"), raw_name
);
403 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
404 Vinvocation_directory
= Ffile_name_directory (raw_name
);
406 /* If we got no directory in argv[0], search PATH to find where
407 Emacs actually came from. */
408 if (NILP (Vinvocation_directory
))
411 int yes
= openp (Vexec_path
, Vinvocation_name
,
412 Vexec_suffixes
, &found
, make_number (X_OK
));
415 /* Add /: to the front of the name
416 if it would otherwise be treated as magic. */
417 tem
= Ffind_file_name_handler (found
, Qt
);
419 found
= concat2 (build_string ("/:"), found
);
420 Vinvocation_directory
= Ffile_name_directory (found
);
424 if (!NILP (Vinvocation_directory
)
425 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
426 /* Emacs was started with relative path, like ./emacs.
428 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
430 Vinstallation_directory
= Qnil
;
432 if (!NILP (Vinvocation_directory
))
434 dir
= Vinvocation_directory
;
435 name
= Fexpand_file_name (Vinvocation_name
, dir
);
438 Lisp_Object tem
, lib_src_exists
;
439 Lisp_Object etc_exists
, info_exists
;
441 /* See if dir contains subdirs for use by Emacs.
442 Check for the ones that would exist in a build directory,
443 not including lisp and info. */
444 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
445 lib_src_exists
= Ffile_exists_p (tem
);
448 /* MSDOS installations frequently remove lib-src, but we still
449 must set installation-directory, or else info won't find
450 its files (it uses the value of installation-directory). */
451 tem
= Fexpand_file_name (build_string ("info"), dir
);
452 info_exists
= Ffile_exists_p (tem
);
457 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
459 tem
= Fexpand_file_name (build_string ("etc"), dir
);
460 etc_exists
= Ffile_exists_p (tem
);
461 if (!NILP (etc_exists
))
463 Vinstallation_directory
464 = Ffile_name_as_directory (dir
);
469 /* See if dir's parent contains those subdirs. */
470 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
471 lib_src_exists
= Ffile_exists_p (tem
);
475 /* See the MSDOS commentary above. */
476 tem
= Fexpand_file_name (build_string ("../info"), dir
);
477 info_exists
= Ffile_exists_p (tem
);
482 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
484 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
485 etc_exists
= Ffile_exists_p (tem
);
486 if (!NILP (etc_exists
))
488 tem
= Fexpand_file_name (build_string (".."), dir
);
489 Vinstallation_directory
490 = Ffile_name_as_directory (tem
);
495 /* If the Emacs executable is actually a link,
496 next try the dir that the link points into. */
497 tem
= Ffile_symlink_p (name
);
500 name
= Fexpand_file_name (tem
, dir
);
501 dir
= Ffile_name_directory (name
);
508 Vcommand_line_args
= Qnil
;
510 for (i
= argc
- 1; i
>= 0; i
--)
512 if (i
== 0 || i
> skip_args
)
513 /* For the moment, we keep arguments as is in unibyte strings.
514 They are decoded in the function command-line after we know
515 locale-coding-system. */
517 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
521 unbind_to (count
, Qnil
);
524 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
525 doc
: /* Return the program name that was used to run Emacs.
526 Any directory names are omitted. */)
529 return Fcopy_sequence (Vinvocation_name
);
532 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
534 doc
: /* Return the directory name in which the Emacs executable was located. */)
537 return Fcopy_sequence (Vinvocation_directory
);
542 /* A valid but unlikely value for the TZ environment value.
543 It is OK (though a bit slower) if the user actually chooses this value. */
544 static char dump_tz
[] = "UtC0";
547 #ifndef ORDINARY_LINK
548 /* We don't include crtbegin.o and crtend.o in the link,
549 so these functions and variables might be missed.
550 Provide dummy definitions to avoid error.
551 (We don't have any real constructors or destructors.) */
553 #ifndef GCC_CTORS_IN_LIBC
554 void __do_global_ctors (void)
556 void __do_global_ctors_aux (void)
558 void __do_global_dtors (void)
560 /* GNU/Linux has a bug in its library; avoid an error. */
562 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
564 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
565 #endif /* GCC_CTORS_IN_LIBC */
568 #endif /* __GNUC__ */
569 #endif /* ORDINARY_LINK */
571 /* Test whether the next argument in ARGV matches SSTR or a prefix of
572 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
573 (the argument is supposed to have a value) store in *VALPTR either
574 the next argument or the portion of this one after the equal sign.
575 ARGV is read starting at position *SKIPPTR; this index is advanced
576 by the number of arguments used.
578 Too bad we can't just use getopt for all of this, but we don't have
579 enough information to do it right. */
582 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
, int minlen
, char **valptr
, int *skipptr
)
588 /* Don't access argv[argc]; give up in advance. */
589 if (argc
<= *skipptr
+ 1)
592 arg
= argv
[*skipptr
+1];
595 if (strcmp (arg
, sstr
) == 0)
599 *valptr
= argv
[*skipptr
+2];
606 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
607 ? p
- arg
: strlen (arg
));
608 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
610 else if (valptr
== NULL
)
621 else if (argv
[*skipptr
+2] != NULL
)
623 *valptr
= argv
[*skipptr
+2];
633 #ifdef DOUG_LEA_MALLOC
635 /* malloc can be invoked even before main (e.g. by the dynamic
636 linker), so the dumped malloc state must be restored as early as
637 possible using this special hook. */
640 malloc_initialize_hook (void)
643 extern char **environ
;
648 if (!malloc_using_checking
)
649 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
650 ignored if the heap to be restored was constructed without
651 malloc checking. Can't use unsetenv, since that calls malloc. */
655 for (p
= environ
; p
&& *p
; p
++)
656 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
665 malloc_set_state (malloc_state_ptr
);
666 #ifndef XMALLOC_OVERRUN_CHECK
667 free (malloc_state_ptr
);
672 if (my_heap_start
== 0)
673 my_heap_start
= sbrk (0);
674 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
678 void (*__malloc_initialize_hook
) (void) = malloc_initialize_hook
;
680 #endif /* DOUG_LEA_MALLOC */
685 main (int argc
, char **argv
)
690 char stack_bottom_variable
;
691 int do_initial_setlocale
;
693 #ifdef HAVE_SETRLIMIT
708 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
709 /* This is used by the Cygwin build. */
710 setenv ("G_SLICE", "always-malloc", 1);
715 extern char my_endbss
[];
716 extern char *my_endbss_static
;
718 if (my_heap_start
== 0)
719 my_heap_start
= sbrk (0);
721 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
724 #ifdef RUN_TIME_REMAP
726 run_time_remap (argv
[0]);
729 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
732 unexec_init_emacs_zone ();
735 sort_args (argc
, argv
);
737 while (argv
[argc
]) argc
++;
739 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
741 const char *version
, *copyright
;
744 Lisp_Object tem
, tem2
;
745 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
746 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
749 fprintf (stderr
, "Invalid value of `emacs-version'\n");
754 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
759 version
= SDATA (tem
);
760 copyright
= SDATA (tem2
);
765 version
= emacs_version
;
766 copyright
= emacs_copyright
;
768 printf ("GNU Emacs %s\n", version
);
769 printf ("%s\n", copyright
);
770 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
771 printf ("You may redistribute copies of Emacs\n");
772 printf ("under the terms of the GNU General Public License.\n");
773 printf ("For more information about these matters, ");
774 printf ("see the file named COPYING.\n");
778 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
779 if (chdir (ch_to_dir
) == -1)
781 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
782 argv
[0], ch_to_dir
, strerror (errno
));
787 #ifdef HAVE_PERSONALITY_LINUX32
789 && (strcmp (argv
[argc
-1], "dump") == 0
790 || strcmp (argv
[argc
-1], "bootstrap") == 0)
791 && ! getenv ("EMACS_HEAP_EXEC"))
793 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
794 /* Set this so we only do this once. */
797 /* A flag to turn off address randomization which is introduced
798 in linux kernel shipped with fedora core 4 */
799 #define ADD_NO_RANDOMIZE 0x0040000
800 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
801 #undef ADD_NO_RANDOMIZE
803 execvp (argv
[0], argv
);
805 /* If the exec fails, try to dump anyway. */
808 #endif /* HAVE_PERSONALITY_LINUX32 */
810 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
811 /* Extend the stack space available.
812 Don't do that if dumping, since some systems (e.g. DJGPP)
813 might define a smaller stack limit at that time. */
816 && (!noninteractive
|| initialized
)
818 && !getrlimit (RLIMIT_STACK
, &rlim
))
821 extern size_t re_max_failures
;
822 /* Approximate the amount regex.c needs per unit of re_max_failures. */
823 int ratio
= 20 * sizeof (char *);
824 /* Then add 33% to cover the size of the smaller stacks that regex.c
825 successively allocates and discards, on its way to the maximum. */
827 /* Add in some extra to cover
828 what we're likely to use for other reasons. */
829 newlim
= re_max_failures
* ratio
+ 200000;
831 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
832 stack allocation routine for new process that the allocation
833 fails if stack limit is not on page boundary. So, round up the
834 new limit to page boundary. */
835 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
837 if (newlim
> rlim
.rlim_max
)
839 newlim
= rlim
.rlim_max
;
840 /* Don't let regex.c overflow the stack we have. */
841 re_max_failures
= (newlim
- 200000) / ratio
;
843 if (rlim
.rlim_cur
< newlim
)
844 rlim
.rlim_cur
= newlim
;
846 setrlimit (RLIMIT_STACK
, &rlim
);
848 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
850 /* Record (approximately) where the stack begins. */
851 stack_bottom
= &stack_bottom_variable
;
855 #ifndef SYSTEM_MALLOC
856 /* Arrange to get warning messages as memory fills up. */
857 memory_warnings (0, malloc_warning
);
859 /* Call malloc at least once, to run the initial __malloc_hook.
860 Also call realloc and free for consistency. */
861 free (realloc (malloc (4), 4));
864 /* Arrange to disable interrupt input inside malloc etc. */
865 uninterrupt_malloc ();
866 # endif /* not SYNC_INPUT */
867 #endif /* not SYSTEM_MALLOC */
869 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
870 main_thread
= pthread_self ();
871 #endif /* FORWARD_SIGNAL_TO_MAIN_THREAD */
873 #if defined (MSDOS) || defined (WINDOWSNT)
874 /* We do all file input/output as binary files. When we need to translate
875 newlines, we do that manually. */
877 #endif /* MSDOS || WINDOWSNT */
880 if (!isatty (fileno (stdin
)))
881 setmode (fileno (stdin
), O_BINARY
);
882 if (!isatty (fileno (stdout
)))
885 setmode (fileno (stdout
), O_BINARY
);
889 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
890 The build procedure uses this while dumping, to ensure that the
891 dumped Emacs does not have its system locale tables initialized,
892 as that might cause screwups when the dumped Emacs starts up. */
894 char *lc_all
= getenv ("LC_ALL");
895 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
898 /* Set locale now, so that initial error messages are localized properly.
899 fixup_locale must wait until later, since it builds strings. */
900 if (do_initial_setlocale
)
901 setlocale (LC_ALL
, "");
903 inhibit_window_system
= 0;
905 /* Handle the -t switch, which specifies filename to use as terminal. */
909 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
914 result
= emacs_open (term
, O_RDWR
, 0);
917 char *errstring
= strerror (errno
);
918 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
924 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
927 fprintf (stderr
, "Using %s\n", term
);
928 #ifdef HAVE_WINDOW_SYSTEM
929 inhibit_window_system
= 1; /* -t => -nw */
936 /* Command line option --no-windows is deprecated and thus not mentioned
937 in the manual and usage informations. */
938 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
939 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
940 inhibit_window_system
= 1;
942 /* Handle the -batch switch, which means don't do interactive display. */
944 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
947 Vundo_outer_limit
= Qnil
;
949 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
951 noninteractive
= 1; /* Set batch mode. */
952 /* Convert --script to -scriptload, un-skip it, and sort again
953 so that it will be handled in proper sequence. */
954 /* FIXME broken for --script=FILE - is that supposed to work? */
955 argv
[skip_args
- 1] = "-scriptload";
957 sort_args (argc
, argv
);
960 /* Handle the --help option, which gives a usage message. */
961 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
963 printf (USAGE1
, argv
[0], USAGE2
);
969 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
970 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
975 /* Start as a daemon: fork a new child process which will run the
976 rest of the initialization code, then exit.
978 Detaching a daemon requires the following steps:
982 - close the tty file-descriptors
984 We only want to do the last 2 steps once the daemon is ready to
985 serve requests, i.e. after loading .emacs (initialization).
986 OTOH initialization may start subprocesses (e.g. ispell) and these
987 should be run from the proper process (the one that will end up
988 running as daemon) and with the proper "session id" in order for
989 them to keep working after detaching, so fork and setsid need to be
990 performed before initialization.
992 We want to avoid exiting before the server socket is ready, so
993 use a pipe for synchronization. The parent waits for the child
994 to close its end of the pipe (using `daemon-initialized')
996 if (pipe (daemon_pipe
) == -1)
998 fprintf (stderr
, "Cannot pipe!\n");
1002 #ifndef NS_IMPL_COCOA
1004 #else /* NS_IMPL_COCOA */
1005 /* Under Cocoa we must do fork+exec as CoreFoundation lib fails in
1006 forked process: http://developer.apple.com/ReleaseNotes/
1007 CoreFoundation/CoreFoundation.html)
1008 We mark being in the exec'd process by a daemon name argument of
1009 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
1010 NAME is the original daemon name, if any. */
1011 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1012 f
= fork (); /* in orig */
1014 f
= 0; /* in exec'd */
1015 #endif /* NS_IMPL_COCOA */
1021 /* Close unused writing end of the pipe. */
1022 close (daemon_pipe
[1]);
1024 /* Just wait for the child to close its end of the pipe. */
1027 retval
= read (daemon_pipe
[0], &buf
, 1);
1029 while (retval
== -1 && errno
== EINTR
);
1033 fprintf (stderr
, "Error reading status from child\n");
1036 else if (retval
== 0)
1038 fprintf (stderr
, "Error: server did not start correctly\n");
1042 close (daemon_pipe
[0]);
1047 fprintf (stderr
, "Cannot fork!\n");
1051 #ifdef NS_IMPL_COCOA
1053 /* In orig process, forked as child, OR in exec'd. */
1054 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1055 { /* In orig, child: now exec w/special daemon name. */
1058 if (dname_arg
&& strlen (dname_arg
) > 70)
1060 fprintf (stderr
, "daemon: child name too long\n");
1064 sprintf (fdStr
, "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1065 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1066 argv
[skip_args
] = fdStr
;
1068 execv (argv
[0], argv
);
1069 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1073 /* In exec'd: parse special dname into pipe and name info. */
1074 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1075 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1077 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1080 dname_arg2
[0] = '\0';
1081 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1083 dname_arg
= strlen (dname_arg2
) ? dname_arg2
: NULL
;
1085 #endif /* NS_IMPL_COCOA */
1088 daemon_name
= xstrdup (dname_arg
);
1089 /* Close unused reading end of the pipe. */
1090 close (daemon_pipe
[0]);
1091 /* Make sure that the used end of the pipe is closed on exec, so
1092 that it is not accessible to programs started from .emacs. */
1093 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1099 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1104 if (! noninteractive
)
1106 #if defined (USG5) && defined (INTERRUPT_INPUT)
1109 #if defined (HAVE_GTK_AND_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1111 extern void malloc_enable_thread (void);
1113 malloc_enable_thread ();
1120 /* Don't catch SIGHUP if dumping. */
1127 sigblock (sigmask (SIGHUP
));
1128 /* In --batch mode, don't catch SIGHUP if already ignored.
1129 That makes nohup work. */
1130 if (! noninteractive
1131 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1132 signal (SIGHUP
, fatal_error_signal
);
1133 sigunblock (sigmask (SIGHUP
));
1138 ! noninteractive
|| initialized
1144 /* Don't catch these signals in batch mode if dumping.
1145 On some machines, this sets static data that would make
1146 signal fail to work right when the dumped Emacs is run. */
1147 signal (SIGQUIT
, fatal_error_signal
);
1148 signal (SIGILL
, fatal_error_signal
);
1149 signal (SIGTRAP
, fatal_error_signal
);
1151 add_user_signal (SIGUSR1
, "sigusr1");
1154 add_user_signal (SIGUSR2
, "sigusr2");
1157 signal (SIGABRT
, fatal_error_signal
);
1160 signal (SIGHWE
, fatal_error_signal
);
1163 signal (SIGPRE
, fatal_error_signal
);
1166 signal (SIGORE
, fatal_error_signal
);
1169 signal (SIGUME
, fatal_error_signal
);
1172 signal (SIGDLK
, fatal_error_signal
);
1175 signal (SIGCPULIM
, fatal_error_signal
);
1178 /* This is missing on some systems - OS/2, for example. */
1179 signal (SIGIOT
, fatal_error_signal
);
1182 signal (SIGEMT
, fatal_error_signal
);
1184 signal (SIGFPE
, fatal_error_signal
);
1186 signal (SIGBUS
, fatal_error_signal
);
1188 signal (SIGSEGV
, fatal_error_signal
);
1190 signal (SIGSYS
, fatal_error_signal
);
1192 /* May need special treatment on MS-Windows. See
1193 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1194 Please update the doc of kill-emacs, kill-emacs-hook, and
1195 NEWS if you change this.
1197 if (noninteractive
) signal (SIGINT
, fatal_error_signal
);
1198 signal (SIGTERM
, fatal_error_signal
);
1200 signal (SIGXCPU
, fatal_error_signal
);
1203 signal (SIGXFSZ
, fatal_error_signal
);
1204 #endif /* SIGXFSZ */
1207 /* This just means available memory is getting low. */
1208 signal (SIGDANGER
, memory_warning_signal
);
1212 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1213 signal (SIGXCPU
, fatal_error_signal
);
1214 signal (SIGIOINT
, fatal_error_signal
);
1215 signal (SIGGRANT
, fatal_error_signal
);
1216 signal (SIGRETRACT
, fatal_error_signal
);
1217 signal (SIGSOUND
, fatal_error_signal
);
1218 signal (SIGMSG
, fatal_error_signal
);
1222 noninteractive1
= noninteractive
;
1224 /* Perform basic initializations (not merely interning symbols). */
1231 init_character_once ();
1232 init_charset_once ();
1233 init_coding_once ();
1234 init_syntax_once (); /* Create standard syntax table. */
1235 init_category_once (); /* Create standard category table. */
1236 /* Must be done before init_buffer. */
1237 init_casetab_once ();
1238 init_buffer_once (); /* Create buffer table and some buffers. */
1239 init_minibuf_once (); /* Create list of minibuffers. */
1240 /* Must precede init_window_once. */
1242 /* Call syms_of_xfaces before init_window_once because that
1243 function creates Vterminal_frame. Termcap frames now use
1244 faces, and the face implementation uses some symbols as
1247 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1248 be better to arrange things not to have this dependency. */
1250 /* Call syms_of_keyboard before init_window_once because
1251 keyboard sets up symbols that include some face names that
1252 the X support will want to use. This can happen when
1253 CANNOT_DUMP is defined. */
1254 syms_of_keyboard ();
1256 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1259 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1261 /* Before syms_of_coding because it initializes Qcharsetp. */
1263 /* Before init_window_once, because it sets up the
1264 Vcoding_system_hash_table. */
1265 syms_of_coding (); /* This should be after syms_of_fileio. */
1267 init_window_once (); /* Init the window system. */
1268 #ifdef HAVE_WINDOW_SYSTEM
1269 init_fringe_once (); /* Swap bitmaps if necessary. */
1270 #endif /* HAVE_WINDOW_SYSTEM */
1275 if (do_initial_setlocale
)
1278 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1279 Vsystem_time_locale
= Vprevious_system_time_locale
;
1284 #ifdef CLASH_DETECTION
1288 running_asynch_code
= 0;
1291 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1294 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1297 ns_alloc_autorelease_pool();
1298 if (!noninteractive
)
1300 #ifdef NS_IMPL_COCOA
1301 if (skip_args
< argc
)
1303 if (!strncmp(argv
[skip_args
], "-psn", 4))
1306 chdir (getenv ("HOME"));
1308 else if (skip_args
+1 < argc
&& !strncmp(argv
[skip_args
+1], "-psn", 4))
1311 chdir (getenv ("HOME"));
1316 #endif /* HAVE_NS */
1318 #ifdef HAVE_X_WINDOWS
1319 /* Stupid kludge to catch command-line display spec. We can't
1320 handle this argument entirely in window system dependent code
1321 because we don't even know which window system dependent code
1322 to run until we've recognized this argument. */
1324 char *displayname
= 0;
1325 int count_before
= skip_args
;
1327 /* Skip any number of -d options, but only use the last one. */
1330 int count_before_this
= skip_args
;
1332 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1334 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1339 count_before
= count_before_this
;
1342 /* If we have the form --display=NAME,
1343 convert it into -d name.
1344 This requires inserting a new element into argv. */
1345 if (displayname
!= 0 && skip_args
- count_before
== 1)
1347 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1350 for (j
= 0; j
< count_before
+ 1; j
++)
1352 new[count_before
+ 1] = "-d";
1353 new[count_before
+ 2] = displayname
;
1354 for (j
= count_before
+ 2; j
<argc
; j
++)
1355 new[j
+ 1] = argv
[j
];
1359 /* Change --display to -d, when its arg is separate. */
1360 else if (displayname
!= 0 && skip_args
> count_before
1361 && argv
[count_before
+ 1][1] == '-')
1362 argv
[count_before
+ 1] = "-d";
1366 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1367 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1371 /* Don't actually discard this arg. */
1372 skip_args
= count_before
;
1374 #else /* !HAVE_X_WINDOWS */
1377 int count_before
= skip_args
;
1379 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1380 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1383 skip_args
= count_before
;
1387 /* argmatch must not be used after here,
1388 except when bulding temacs
1389 because the -d argument has not been skipped in skip_args. */
1392 /* Call early 'cause init_environment needs it. */
1394 /* Set defaults for several environment variables. */
1396 init_environment (argc
, argv
, skip_args
);
1403 /* Initialize environment from registry settings. */
1404 init_environment (argv
);
1405 init_ntproc (); /* must precede init_editfns. */
1415 /* Initialize and GC-protect Vinitial_environment and
1416 Vprocess_environment before set_initial_environment fills them
1419 syms_of_callproc ();
1420 /* egetenv is a pretty low-level facility, which may get called in
1421 many circumstances; it seems flimsy to put off initializing it
1422 until calling init_callproc. */
1423 set_initial_environment ();
1424 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1425 if this is not done. Do it after set_global_environment so that we
1426 don't pollute Vglobal_environment. */
1427 /* Setting LANG here will defeat the startup locale processing... */
1432 init_buffer (); /* Init default directory of main buffer. */
1434 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1435 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1439 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1440 Lisp_Object old_log_max
;
1441 old_log_max
= Vmessage_log_max
;
1442 XSETFASTINT (Vmessage_log_max
, 0);
1443 message_dolog ("", 0, 1, 0);
1444 Vmessage_log_max
= old_log_max
;
1447 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1450 /* Intern the names of all standard functions and variables;
1451 define standard keys. */
1455 /* The basic levels of Lisp must come first. Note that
1456 syms_of_data and some others have already been called. */
1462 syms_of_floatfns ();
1465 syms_of_bytecode ();
1467 syms_of_casefiddle ();
1469 syms_of_category ();
1471 syms_of_character ();
1478 syms_of_filelock ();
1481 /* syms_of_keymap (); */
1489 syms_of_terminal ();
1495 syms_of_textprop ();
1496 syms_of_composite ();
1499 #endif /* WINDOWSNT */
1503 #ifdef HAVE_WINDOW_SYSTEM
1506 #endif /* HAVE_WINDOW_SYSTEM */
1507 #ifdef HAVE_X_WINDOWS
1512 syms_of_xsettings ();
1519 #endif /* HAVE_X_WINDOWS */
1530 syms_of_w32select ();
1533 #endif /* HAVE_NTGUI */
1539 syms_of_win16select();
1546 syms_of_nsselect ();
1548 #endif /* HAVE_NS */
1555 syms_of_dbusbind ();
1556 #endif /* HAVE_DBUS */
1560 #endif /* WINDOWSNT */
1562 keys_of_casefiddle ();
1565 keys_of_keyboard ();
1571 /* Initialization that must be done even if the global variable
1572 initialized is non zero. */
1574 globals_of_w32fns ();
1575 globals_of_w32menu ();
1576 globals_of_w32select ();
1577 #endif /* HAVE_NTGUI */
1582 init_editfns (); /* init_process uses Voperating_system_release. */
1583 init_process (); /* init_display uses add_keyboard_wait_descriptor. */
1584 init_keyboard (); /* This too must precede init_sys_modes. */
1585 if (!noninteractive
)
1586 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1589 #ifdef HAVE_WINDOW_SYSTEM
1592 #endif /* HAVE_WINDOW_SYSTEM */
1604 /* Handle -l loadup, args passed by Makefile. */
1605 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1606 Vtop_level
= Fcons (intern_c_string ("load"),
1607 Fcons (build_string (file
), Qnil
));
1608 /* Unless next switch is -nl, load "loadup.el" first thing. */
1610 Vtop_level
= Fcons (intern_c_string ("load"),
1611 Fcons (build_string ("loadup.el"), Qnil
));
1618 /* If the execution TZ happens to be the same as the dump TZ,
1619 change it to some other value and then change it back,
1620 to force the underlying implementation to reload the TZ info.
1621 This is needed on implementations that load TZ info from files,
1622 since the TZ file contents may differ between dump and execution. */
1623 char *tz
= getenv ("TZ");
1624 if (tz
&& !strcmp (tz
, dump_tz
))
1634 /* Set up for profiling. This is known to work on FreeBSD,
1635 GNU/Linux and MinGW. It might work on some other systems too.
1636 Give it a try and tell us if it works on your system. To compile
1637 for profiling, use the configure option --enable-profiling. */
1638 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined(__MINGW32__)
1642 extern void _mcleanup ();
1644 extern unsigned char etext
asm ("etext");
1648 #ifdef HAVE___EXECUTABLE_START
1649 /* This symbol is defined by GNU ld to the start of the text
1651 extern char __executable_start
[];
1653 extern void safe_bcopy ();
1657 #ifdef HAVE___EXECUTABLE_START
1658 monstartup (__executable_start
, &etext
);
1660 /* This uses safe_bcopy because that function comes first in the
1661 Emacs executable. It might be better to use something that
1662 gives the start of the text segment, but start_of_text is not
1663 defined on all systems now. */
1664 /* FIXME: Does not work on architectures with function
1666 monstartup (safe_bcopy
, &etext
);
1676 #ifdef LOCALTIME_CACHE
1677 /* Some versions of localtime have a bug. They cache the value of the time
1678 zone rather than looking it up every time. Since localtime() is
1679 called to bolt the undumping time into the undumped emacs, this
1680 results in localtime ignoring the TZ environment variable.
1681 This flushes the new TZ value into localtime. */
1683 #endif /* defined (LOCALTIME_CACHE) */
1685 /* Enter editor command loop. This never returns. */
1691 /* Sort the args so we can find the most important ones
1692 at the beginning of argv. */
1694 /* First, here's a table of all the standard options. */
1696 struct standard_args
1699 const char *longname
;
1704 const struct standard_args standard_args
[] =
1706 { "-version", "--version", 150, 0 },
1707 { "-chdir", "--chdir", 130, 1 },
1708 { "-t", "--terminal", 120, 1 },
1709 { "-nw", "--no-window-system", 110, 0 },
1710 { "-nw", "--no-windows", 110, 0 },
1711 { "-batch", "--batch", 100, 0 },
1712 { "-script", "--script", 100, 1 },
1713 { "-daemon", "--daemon", 99, 0 },
1714 { "-help", "--help", 90, 0 },
1715 { "-nl", "--no-loadup", 70, 0 },
1716 { "-nsl", "--no-site-lisp", 65, 0 },
1717 /* -d must come last before the options handled in startup.el. */
1718 { "-d", "--display", 60, 1 },
1719 { "-display", 0, 60, 1 },
1720 /* Now for the options handled in `command-line' (startup.el). */
1721 /* (Note that to imply -nsl, -Q is partially handled here.) */
1722 { "-Q", "--quick", 55, 0 },
1723 { "-quick", 0, 55, 0 },
1724 { "-q", "--no-init-file", 50, 0 },
1725 { "-no-init-file", 0, 50, 0 },
1726 { "-no-site-file", "--no-site-file", 40, 0 },
1727 { "-u", "--user", 30, 1 },
1728 { "-user", 0, 30, 1 },
1729 { "-debug-init", "--debug-init", 20, 0 },
1730 { "-iconic", "--iconic", 15, 0 },
1731 { "-D", "--basic-display", 12, 0},
1732 { "-basic-display", 0, 12, 0},
1733 { "-nbc", "--no-blinking-cursor", 12, 0 },
1734 /* Now for the options handled in `command-line-1' (startup.el). */
1735 { "-nbi", "--no-bitmap-icon", 10, 0 },
1736 { "-bg", "--background-color", 10, 1 },
1737 { "-background", 0, 10, 1 },
1738 { "-fg", "--foreground-color", 10, 1 },
1739 { "-foreground", 0, 10, 1 },
1740 { "-bd", "--border-color", 10, 1 },
1741 { "-bw", "--border-width", 10, 1 },
1742 { "-ib", "--internal-border", 10, 1 },
1743 { "-ms", "--mouse-color", 10, 1 },
1744 { "-cr", "--cursor-color", 10, 1 },
1745 { "-fn", "--font", 10, 1 },
1746 { "-font", 0, 10, 1 },
1747 { "-fs", "--fullscreen", 10, 0 },
1748 { "-fw", "--fullwidth", 10, 0 },
1749 { "-fh", "--fullheight", 10, 0 },
1750 { "-mm", "--maximized", 10, 0 },
1751 { "-g", "--geometry", 10, 1 },
1752 { "-geometry", 0, 10, 1 },
1753 { "-T", "--title", 10, 1 },
1754 { "-title", 0, 10, 1 },
1755 { "-name", "--name", 10, 1 },
1756 { "-xrm", "--xrm", 10, 1 },
1757 { "-parent-id", "--parent-id", 10, 1 },
1758 { "-r", "--reverse-video", 5, 0 },
1760 { "-reverse", 0, 5, 0 },
1761 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1762 { "-vb", "--vertical-scroll-bars", 5, 0 },
1763 { "-color", "--color", 5, 0},
1764 { "-no-splash", "--no-splash", 3, 0 },
1765 { "-no-desktop", "--no-desktop", 3, 0 },
1767 { "-NSAutoLaunch", 0, 5, 1 },
1768 { "-NXAutoLaunch", 0, 5, 1 },
1769 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1770 { "-_NSMachLaunch", 0, 85, 1 },
1771 { "-MachLaunch", 0, 85, 1 },
1772 { "-macosx", 0, 85, 0 },
1773 { "-NSHost", 0, 85, 1 },
1775 /* These have the same priority as ordinary file name args,
1776 so they are not reordered with respect to those. */
1777 { "-L", "--directory", 0, 1 },
1778 { "-directory", 0, 0, 1 },
1779 { "-l", "--load", 0, 1 },
1780 { "-load", 0, 0, 1 },
1781 /* This has no longname, because using --scriptload confuses sort_args,
1782 because then the --script long option seems to match twice; ie
1783 you can't have a long option which is a prefix of another long
1784 option. In any case, this is entirely an internal option. */
1785 { "-scriptload", NULL
, 0, 1 },
1786 { "-f", "--funcall", 0, 1 },
1787 { "-funcall", 0, 0, 1 },
1788 { "-eval", "--eval", 0, 1 },
1789 { "-execute", "--execute", 0, 1 },
1790 { "-find-file", "--find-file", 0, 1 },
1791 { "-visit", "--visit", 0, 1 },
1792 { "-file", "--file", 0, 1 },
1793 { "-insert", "--insert", 0, 1 },
1795 { "-NXOpen", 0, 0, 1 },
1796 { "-NXOpenTemp", 0, 0, 1 },
1797 { "-NSOpen", 0, 0, 1 },
1798 { "-NSOpenTemp", 0, 0, 1 },
1799 { "-GSFilePath", 0, 0, 1 },
1801 /* This should be processed after ordinary file name args and the like. */
1802 { "-kill", "--kill", -10, 0 },
1805 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1806 so that the highest priority ones come first.
1807 Do not change the order of elements of equal priority.
1808 If an option takes an argument, keep it and its argument together.
1810 If an option that takes no argument appears more
1811 than once, eliminate all but one copy of it. */
1814 sort_args (int argc
, char **argv
)
1816 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1817 /* For each element of argv,
1818 the corresponding element of options is:
1819 0 for an option that takes no arguments,
1820 1 for an option that takes one argument, etc.
1821 -1 for an ordinary non-option argument. */
1822 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1823 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1825 int incoming_used
= 1;
1829 /* Categorize all the options,
1830 and figure out which argv elts are option arguments. */
1831 for (from
= 1; from
< argc
; from
++)
1835 if (argv
[from
][0] == '-')
1840 /* If we have found "--", don't consider
1841 any more arguments as options. */
1842 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1844 /* Leave the "--", and everything following it, at the end. */
1845 for (; from
< argc
; from
++)
1847 priority
[from
] = -100;
1853 /* Look for a match with a known old-fashioned option. */
1854 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1855 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1857 options
[from
] = standard_args
[i
].nargs
;
1858 priority
[from
] = standard_args
[i
].priority
;
1859 if (from
+ standard_args
[i
].nargs
>= argc
)
1860 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1861 from
+= standard_args
[i
].nargs
;
1865 /* Look for a match with a known long option.
1866 MATCH is -1 if no match so far, -2 if two or more matches so far,
1867 >= 0 (the table index of the match) if just one match so far. */
1868 if (argv
[from
][1] == '-')
1871 thislen
= strlen (argv
[from
]);
1872 equals
= strchr (argv
[from
], '=');
1874 thislen
= equals
- argv
[from
];
1877 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1878 if (standard_args
[i
].longname
1879 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1888 /* If we found exactly one match, use that. */
1891 options
[from
] = standard_args
[match
].nargs
;
1892 priority
[from
] = standard_args
[match
].priority
;
1893 /* If --OPTION=VALUE syntax is used,
1894 this option uses just one argv element. */
1897 if (from
+ options
[from
] >= argc
)
1898 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1899 from
+= options
[from
];
1901 /* FIXME When match < 0, shouldn't there be some error,
1902 or at least indication to the user that there was a
1909 /* Copy the arguments, in order of decreasing priority, to NEW. */
1911 while (incoming_used
< argc
)
1914 int best_priority
= -9999;
1916 /* Find the highest priority remaining option.
1917 If several have equal priority, take the first of them. */
1918 for (from
= 1; from
< argc
; from
++)
1920 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1922 best_priority
= priority
[from
];
1925 /* Skip option arguments--they are tied to the options. */
1926 if (options
[from
] > 0)
1927 from
+= options
[from
];
1933 /* Copy the highest priority remaining option, with its args, to NEW.
1934 Unless it is a duplicate of the previous one. */
1935 if (! (options
[best
] == 0
1936 && ! strcmp (new[to
- 1], argv
[best
])))
1938 new[to
++] = argv
[best
];
1939 for (i
= 0; i
< options
[best
]; i
++)
1940 new[to
++] = argv
[best
+ i
+ 1];
1943 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1945 /* Clear out this option in ARGV. */
1947 for (i
= 0; i
< options
[best
]; i
++)
1948 argv
[best
+ i
+ 1] = 0;
1951 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1955 memcpy (argv
, new, sizeof (char *) * argc
);
1962 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1963 doc
: /* Exit the Emacs job and kill it.
1964 If ARG is an integer, return ARG as the exit program code.
1965 If ARG is a string, stuff it as keyboard input.
1967 This function is called upon receipt of the signals SIGTERM
1968 or SIGHUP, and upon SIGINT in batch mode.
1970 The value of `kill-emacs-hook', if not void,
1971 is a list of functions (of no args),
1972 all of which are called before Emacs is actually killed. */)
1975 struct gcpro gcpro1
;
1982 if (!NILP (Vrun_hooks
))
1983 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1987 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1989 /* If we have an auto-save list file,
1990 kill it because we are exiting Emacs deliberately (not crashing).
1991 Do it after shut_down_emacs, which does an auto-save. */
1992 if (STRINGP (Vauto_save_list_file_name
))
1993 unlink (SDATA (Vauto_save_list_file_name
));
1995 exit (INTEGERP (arg
) ? XINT (arg
) : EXIT_SUCCESS
);
1999 /* Perform an orderly shutdown of Emacs. Autosave any modified
2000 buffers, kill any child processes, clean up the terminal modes (if
2001 we're in the foreground), and other stuff like that. Don't perform
2002 any redisplay; this may be called when Emacs is shutting down in
2003 the background, or after its X connection has died.
2005 If SIG is a signal number, print a message for it.
2007 This is called by fatal signal handlers, X protocol error handlers,
2011 shut_down_emacs (int sig
, int no_x
, Lisp_Object stuff
)
2013 /* Prevent running of hooks from now on. */
2016 /* Don't update display from now on. */
2017 Vinhibit_redisplay
= Qt
;
2019 /* If we are controlling the terminal, reset terminal modes. */
2022 int pgrp
= EMACS_GETPGRP (0);
2023 int tpgrp
= tcgetpgrp (0);
2024 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
2026 reset_all_sys_modes ();
2027 if (sig
&& sig
!= SIGTERM
)
2028 fprintf (stderr
, "Fatal error (%d)", sig
);
2033 reset_all_sys_modes ();
2036 stuff_buffered_input (stuff
);
2038 inhibit_sentinels
= 1;
2039 kill_buffer_processes (Qnil
);
2040 Fdo_auto_save (Qt
, Qnil
);
2042 #ifdef CLASH_DETECTION
2043 unlock_all_files ();
2046 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2047 #ifdef HAVE_X_WINDOWS
2048 /* It's not safe to call intern here. Maybe we are crashing. */
2049 if (!noninteractive
&& SYMBOLP (Vinitial_window_system
)
2050 && SCHARS (SYMBOL_NAME (Vinitial_window_system
)) == 1
2051 && SREF (SYMBOL_NAME (Vinitial_window_system
), 0) == 'x'
2053 Fx_close_current_connection ();
2054 #endif /* HAVE_X_WINDOWS */
2058 /* There is a tendency for a SIGIO signal to arrive within exit,
2059 and cause a SIGHUP because the input descriptor is already closed. */
2061 signal (SIGIO
, SIG_IGN
);
2068 /* Do this only if terminating normally, we want glyph matrices
2069 etc. in a core dump. */
2070 if (sig
== 0 || sig
== SIGTERM
)
2072 check_glyph_memory ();
2073 check_message_stack ();
2081 ns_term_shutdown (sig
);
2089 /* FIXME: maybe this should go into header file, config.h seems the
2090 only one appropriate. */
2091 extern int unexec (const char *, const char *);
2093 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2094 doc
: /* Dump current state of Emacs into executable file FILENAME.
2095 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2096 This is used in the file `loadup.el' when building Emacs.
2098 You must run Emacs in batch mode in order to dump it. */)
2099 (Lisp_Object filename
, Lisp_Object symfile
)
2101 extern char my_edata
[];
2104 int count
= SPECPDL_INDEX ();
2108 if (! noninteractive
)
2109 error ("Dumping Emacs works only in batch mode");
2112 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2114 fprintf (stderr
, "**************************************************\n");
2115 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2116 fprintf (stderr
, "heap (%lu bytes). This usually means that exec-shield\n",
2118 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2119 fprintf (stderr
, "fail because of this. See the section about\n");
2120 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2121 fprintf (stderr
, "**************************************************\n");
2123 #endif /* GNU_LINUX */
2125 /* Bind `command-line-processed' to nil before dumping,
2126 so that the dumped Emacs will process its command line
2127 and set up to work with X windows if appropriate. */
2128 symbol
= intern ("command-line-processed");
2129 specbind (symbol
, Qnil
);
2131 CHECK_STRING (filename
);
2132 filename
= Fexpand_file_name (filename
, Qnil
);
2133 if (!NILP (symfile
))
2135 CHECK_STRING (symfile
);
2136 if (SCHARS (symfile
))
2137 symfile
= Fexpand_file_name (symfile
, Qnil
);
2141 Vpurify_flag
= Qnil
;
2144 set_time_zone_rule (dump_tz
);
2145 #ifndef LOCALTIME_CACHE
2146 /* Force a tz reload, since set_time_zone_rule doesn't. */
2152 /* Tell malloc where start of impure now is. */
2153 /* Also arrange for warnings when nearly out of space. */
2154 #ifndef SYSTEM_MALLOC
2156 /* On Windows, this was done before dumping, and that once suffices.
2157 Meanwhile, my_edata is not valid on Windows. */
2158 memory_warnings (my_edata
, malloc_warning
);
2159 #endif /* not WINDOWSNT */
2160 #if defined (HAVE_GTK_AND_PTHREAD) && !defined SYNC_INPUT
2161 /* Pthread may call malloc before main, and then we will get an endless
2162 loop, because pthread_self (see alloc.c) calls malloc the first time
2163 it is called on some systems. */
2164 reset_malloc_hooks ();
2166 #endif /* not SYSTEM_MALLOC */
2167 #ifdef DOUG_LEA_MALLOC
2168 malloc_state_ptr
= malloc_get_state ();
2171 #ifdef USE_MMAP_FOR_BUFFERS
2174 unexec (SDATA (filename
), !NILP (symfile
) ? SDATA (symfile
) : 0);
2175 #ifdef USE_MMAP_FOR_BUFFERS
2178 #ifdef DOUG_LEA_MALLOC
2179 free (malloc_state_ptr
);
2184 return unbind_to (count
, Qnil
);
2187 #endif /* not CANNOT_DUMP */
2190 /* Recover from setlocale (LC_ALL, ""). */
2194 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2195 so that numbers are read and printed properly for Emacs Lisp. */
2196 setlocale (LC_NUMERIC
, "C");
2199 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2202 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2204 if (! EQ (*plocale
, desired_locale
))
2206 *plocale
= desired_locale
;
2207 setlocale (category
, (STRINGP (desired_locale
)
2208 ? SSDATA (desired_locale
)
2213 /* Set system time locale to match Vsystem_time_locale, if possible. */
2215 synchronize_system_time_locale (void)
2217 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2218 Vsystem_time_locale
);
2221 /* Set system messages locale to match Vsystem_messages_locale, if
2224 synchronize_system_messages_locale (void)
2227 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2228 Vsystem_messages_locale
);
2231 #endif /* HAVE_SETLOCALE */
2238 decode_env_path (const char *evarname
, const char *defalt
)
2240 const char *path
, *p
;
2241 Lisp_Object lpath
, element
, tem
;
2243 /* It's okay to use getenv here, because this function is only used
2244 to initialize variables when Emacs starts up, and isn't called
2247 path
= getenv (evarname
);
2253 /* Ensure values from the environment use the proper directory separator. */
2256 char *path_copy
= alloca (strlen (path
) + 1);
2257 strcpy (path_copy
, path
);
2258 dostounix_filename (path_copy
);
2265 p
= strchr (path
, SEPCHAR
);
2267 p
= path
+ strlen (path
);
2268 element
= (p
- path
? make_string (path
, p
- path
)
2269 : build_string ("."));
2271 /* Add /: to the front of the name
2272 if it would otherwise be treated as magic. */
2273 tem
= Ffind_file_name_handler (element
, Qt
);
2275 /* However, if the handler says "I'm safe",
2276 don't bother adding /:. */
2280 prop
= Fget (tem
, intern ("safe-magic"));
2286 element
= concat2 (build_string ("/:"), element
);
2288 lpath
= Fcons (element
, lpath
);
2294 return Fnreverse (lpath
);
2297 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2298 doc
: /* Return non-nil if the current emacs process is a daemon.
2299 If the daemon was given a name argument, return that name. */)
2304 return build_string (daemon_name
);
2311 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2312 doc
: /* Mark the Emacs daemon as being initialized.
2313 This finishes the daemonization process by doing the other half of detaching
2314 from the parent process and its tty file descriptors. */)
2320 error ("This function can only be called if emacs is run as a daemon");
2322 if (daemon_pipe
[1] < 0)
2323 error ("The daemon has already been initialized");
2325 if (NILP (Vafter_init_time
))
2326 error ("This function can only be called after loading the init files");
2328 /* Get rid of stdin, stdout and stderr. */
2329 nfd
= open ("/dev/null", O_RDWR
);
2335 /* Closing the pipe will notify the parent that it can exit.
2336 FIXME: In case some other process inherited the pipe, closing it here
2337 won't notify the parent because it's still open elsewhere, so we
2338 additionally send a byte, just to make sure the parent really exits.
2339 Instead, we should probably close the pipe in start-process and
2340 call-process to make sure the pipe is never inherited by
2342 write (daemon_pipe
[1], "\n", 1);
2343 close (daemon_pipe
[1]);
2344 /* Set it to an invalid value so we know we've already run this function. */
2345 daemon_pipe
[1] = -1;
2350 syms_of_emacs (void)
2352 Qfile_name_handler_alist
= intern_c_string ("file-name-handler-alist");
2353 staticpro (&Qfile_name_handler_alist
);
2354 Qrisky_local_variable
= intern_c_string ("risky-local-variable");
2355 staticpro (&Qrisky_local_variable
);
2358 defsubr (&Sdump_emacs
);
2361 defsubr (&Skill_emacs
);
2363 defsubr (&Sinvocation_name
);
2364 defsubr (&Sinvocation_directory
);
2365 defsubr (&Sdaemonp
);
2366 defsubr (&Sdaemon_initialized
);
2368 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2369 doc
: /* Args passed by shell to Emacs, as a list of strings.
2370 Many arguments are deleted from the list as they are processed. */);
2372 DEFVAR_LISP ("system-type", Vsystem_type
,
2373 doc
: /* The value is a symbol indicating the type of operating system you are using.
2375 `gnu' compiled for a GNU Hurd system.
2376 `gnu/linux' compiled for a GNU/Linux system.
2377 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2378 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2379 `ms-dos' compiled as an MS-DOS application.
2380 `windows-nt' compiled as a native W32 application.
2381 `cygwin' compiled using the Cygwin library.
2382 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2383 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2384 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2385 /* Above values are from SYSTEM_TYPE in src/s/*.h. */
2387 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2388 doc
: /* Value is string indicating configuration Emacs was built for.
2389 On MS-Windows, the value reflects the OS flavor and version on which
2390 Emacs is running. */);
2391 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2393 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2394 doc
: /* String containing the configuration options Emacs was built with. */);
2395 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2397 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2398 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2400 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2401 doc
: /* Hook to be run when `kill-emacs' is called.
2402 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2403 in other similar situations), functions placed on this hook should not
2404 expect to be able to interact with the user. To ask for confirmation,
2405 see `kill-emacs-query-functions' instead.
2407 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2408 `noninteractive' was non-nil. */);
2409 Vkill_emacs_hook
= Qnil
;
2411 DEFVAR_LISP ("path-separator", Vpath_separator
,
2412 doc
: /* String containing the character that separates directories in
2413 search paths, such as PATH and other similar environment variables. */);
2416 Vpath_separator
= make_string (&c
, 1);
2419 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2420 doc
: /* The program name that was used to run Emacs.
2421 Any directory names are omitted. */);
2423 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2424 doc
: /* The directory in which the Emacs executable was found, to run it.
2425 The value is nil if that directory's name is not known. */);
2427 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2428 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2429 This is non-nil when we can't find those directories in their standard
2430 installed locations, but we can find them near where the Emacs executable
2432 Vinstallation_directory
= Qnil
;
2434 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2435 doc
: /* System locale for messages. */);
2436 Vsystem_messages_locale
= Qnil
;
2438 DEFVAR_LISP ("previous-system-messages-locale",
2439 Vprevious_system_messages_locale
,
2440 doc
: /* Most recently used system locale for messages. */);
2441 Vprevious_system_messages_locale
= Qnil
;
2443 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2444 doc
: /* System locale for time. */);
2445 Vsystem_time_locale
= Qnil
;
2447 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2448 doc
: /* Most recently used system locale for time. */);
2449 Vprevious_system_time_locale
= Qnil
;
2451 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2452 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2453 Vbefore_init_time
= Qnil
;
2455 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2456 doc
: /* Value of `current-time' after loading the init files.
2457 This is nil during initialization. */);
2458 Vafter_init_time
= Qnil
;
2460 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2461 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2462 inhibit_x_resources
= 0;
2464 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2465 doc
: /* Short copyright string for this version of Emacs. */);
2466 Vemacs_copyright
= build_string (emacs_copyright
);
2468 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2469 doc
: /* Version numbers of this version of Emacs. */);
2470 Vemacs_version
= build_string (emacs_version
);
2472 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2473 doc
: /* Alist of dynamic libraries vs external files implementing them.
2474 Each element is a list (LIBRARY FILE...), where the car is a symbol
2475 representing a supported external library, and the rest are strings giving
2476 alternate filenames for that library.
2478 Emacs tries to load the library from the files in the order they appear on
2479 the list; if none is loaded, the running session of Emacs won't have access
2482 Note that image types `pbm' and `xbm' do not need entries in this variable
2483 because they do not depend on external libraries and are always available.
2485 Also note that this is not a generic facility for accessing external
2486 libraries; only those already known by Emacs will be loaded. */);
2487 Vdynamic_library_alist
= Qnil
;
2488 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2490 /* Make sure IS_DAEMON starts up as false. */