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);
915 if (result
< 0 || dup (0) < 0)
917 char *errstring
= strerror (errno
);
918 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
923 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
926 fprintf (stderr
, "Using %s\n", term
);
927 #ifdef HAVE_WINDOW_SYSTEM
928 inhibit_window_system
= 1; /* -t => -nw */
935 /* Command line option --no-windows is deprecated and thus not mentioned
936 in the manual and usage informations. */
937 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
938 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
939 inhibit_window_system
= 1;
941 /* Handle the -batch switch, which means don't do interactive display. */
943 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
946 Vundo_outer_limit
= Qnil
;
948 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
950 noninteractive
= 1; /* Set batch mode. */
951 /* Convert --script to -scriptload, un-skip it, and sort again
952 so that it will be handled in proper sequence. */
953 /* FIXME broken for --script=FILE - is that supposed to work? */
954 argv
[skip_args
- 1] = "-scriptload";
956 sort_args (argc
, argv
);
959 /* Handle the --help option, which gives a usage message. */
960 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
962 printf (USAGE1
, argv
[0], USAGE2
);
968 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
969 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
974 /* Start as a daemon: fork a new child process which will run the
975 rest of the initialization code, then exit.
977 Detaching a daemon requires the following steps:
981 - close the tty file-descriptors
983 We only want to do the last 2 steps once the daemon is ready to
984 serve requests, i.e. after loading .emacs (initialization).
985 OTOH initialization may start subprocesses (e.g. ispell) and these
986 should be run from the proper process (the one that will end up
987 running as daemon) and with the proper "session id" in order for
988 them to keep working after detaching, so fork and setsid need to be
989 performed before initialization.
991 We want to avoid exiting before the server socket is ready, so
992 use a pipe for synchronization. The parent waits for the child
993 to close its end of the pipe (using `daemon-initialized')
995 if (pipe (daemon_pipe
) == -1)
997 fprintf (stderr
, "Cannot pipe!\n");
1001 #ifndef NS_IMPL_COCOA
1003 #else /* NS_IMPL_COCOA */
1004 /* Under Cocoa we must do fork+exec as CoreFoundation lib fails in
1005 forked process: http://developer.apple.com/ReleaseNotes/
1006 CoreFoundation/CoreFoundation.html)
1007 We mark being in the exec'd process by a daemon name argument of
1008 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
1009 NAME is the original daemon name, if any. */
1010 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1011 f
= fork (); /* in orig */
1013 f
= 0; /* in exec'd */
1014 #endif /* NS_IMPL_COCOA */
1020 /* Close unused writing end of the pipe. */
1021 close (daemon_pipe
[1]);
1023 /* Just wait for the child to close its end of the pipe. */
1026 retval
= read (daemon_pipe
[0], &buf
, 1);
1028 while (retval
== -1 && errno
== EINTR
);
1032 fprintf (stderr
, "Error reading status from child\n");
1035 else if (retval
== 0)
1037 fprintf (stderr
, "Error: server did not start correctly\n");
1041 close (daemon_pipe
[0]);
1046 fprintf (stderr
, "Cannot fork!\n");
1050 #ifdef NS_IMPL_COCOA
1052 /* In orig process, forked as child, OR in exec'd. */
1053 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1054 { /* In orig, child: now exec w/special daemon name. */
1057 if (dname_arg
&& strlen (dname_arg
) > 70)
1059 fprintf (stderr
, "daemon: child name too long\n");
1063 sprintf (fdStr
, "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1064 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1065 argv
[skip_args
] = fdStr
;
1067 execv (argv
[0], argv
);
1068 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1072 /* In exec'd: parse special dname into pipe and name info. */
1073 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1074 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1076 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1079 dname_arg2
[0] = '\0';
1080 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1082 dname_arg
= strlen (dname_arg2
) ? dname_arg2
: NULL
;
1084 #endif /* NS_IMPL_COCOA */
1087 daemon_name
= xstrdup (dname_arg
);
1088 /* Close unused reading end of the pipe. */
1089 close (daemon_pipe
[0]);
1090 /* Make sure that the used end of the pipe is closed on exec, so
1091 that it is not accessible to programs started from .emacs. */
1092 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1098 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1103 if (! noninteractive
)
1105 #if defined (USG5) && defined (INTERRUPT_INPUT)
1108 #if defined (HAVE_GTK_AND_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1110 extern void malloc_enable_thread (void);
1112 malloc_enable_thread ();
1119 /* Don't catch SIGHUP if dumping. */
1126 sigblock (sigmask (SIGHUP
));
1127 /* In --batch mode, don't catch SIGHUP if already ignored.
1128 That makes nohup work. */
1129 if (! noninteractive
1130 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1131 signal (SIGHUP
, fatal_error_signal
);
1132 sigunblock (sigmask (SIGHUP
));
1137 ! noninteractive
|| initialized
1143 /* Don't catch these signals in batch mode if dumping.
1144 On some machines, this sets static data that would make
1145 signal fail to work right when the dumped Emacs is run. */
1146 signal (SIGQUIT
, fatal_error_signal
);
1147 signal (SIGILL
, fatal_error_signal
);
1148 signal (SIGTRAP
, fatal_error_signal
);
1150 add_user_signal (SIGUSR1
, "sigusr1");
1153 add_user_signal (SIGUSR2
, "sigusr2");
1156 signal (SIGABRT
, fatal_error_signal
);
1159 signal (SIGHWE
, fatal_error_signal
);
1162 signal (SIGPRE
, fatal_error_signal
);
1165 signal (SIGORE
, fatal_error_signal
);
1168 signal (SIGUME
, fatal_error_signal
);
1171 signal (SIGDLK
, fatal_error_signal
);
1174 signal (SIGCPULIM
, fatal_error_signal
);
1177 /* This is missing on some systems - OS/2, for example. */
1178 signal (SIGIOT
, fatal_error_signal
);
1181 signal (SIGEMT
, fatal_error_signal
);
1183 signal (SIGFPE
, fatal_error_signal
);
1185 signal (SIGBUS
, fatal_error_signal
);
1187 signal (SIGSEGV
, fatal_error_signal
);
1189 signal (SIGSYS
, fatal_error_signal
);
1191 /* May need special treatment on MS-Windows. See
1192 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1193 Please update the doc of kill-emacs, kill-emacs-hook, and
1194 NEWS if you change this.
1196 if (noninteractive
) signal (SIGINT
, fatal_error_signal
);
1197 signal (SIGTERM
, fatal_error_signal
);
1199 signal (SIGXCPU
, fatal_error_signal
);
1202 signal (SIGXFSZ
, fatal_error_signal
);
1203 #endif /* SIGXFSZ */
1206 /* This just means available memory is getting low. */
1207 signal (SIGDANGER
, memory_warning_signal
);
1211 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1212 signal (SIGXCPU
, fatal_error_signal
);
1213 signal (SIGIOINT
, fatal_error_signal
);
1214 signal (SIGGRANT
, fatal_error_signal
);
1215 signal (SIGRETRACT
, fatal_error_signal
);
1216 signal (SIGSOUND
, fatal_error_signal
);
1217 signal (SIGMSG
, fatal_error_signal
);
1221 noninteractive1
= noninteractive
;
1223 /* Perform basic initializations (not merely interning symbols). */
1230 init_character_once ();
1231 init_charset_once ();
1232 init_coding_once ();
1233 init_syntax_once (); /* Create standard syntax table. */
1234 init_category_once (); /* Create standard category table. */
1235 /* Must be done before init_buffer. */
1236 init_casetab_once ();
1237 init_buffer_once (); /* Create buffer table and some buffers. */
1238 init_minibuf_once (); /* Create list of minibuffers. */
1239 /* Must precede init_window_once. */
1241 /* Call syms_of_xfaces before init_window_once because that
1242 function creates Vterminal_frame. Termcap frames now use
1243 faces, and the face implementation uses some symbols as
1246 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1247 be better to arrange things not to have this dependency. */
1249 /* Call syms_of_keyboard before init_window_once because
1250 keyboard sets up symbols that include some face names that
1251 the X support will want to use. This can happen when
1252 CANNOT_DUMP is defined. */
1253 syms_of_keyboard ();
1255 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1258 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1260 /* Before syms_of_coding because it initializes Qcharsetp. */
1262 /* Before init_window_once, because it sets up the
1263 Vcoding_system_hash_table. */
1264 syms_of_coding (); /* This should be after syms_of_fileio. */
1266 init_window_once (); /* Init the window system. */
1267 #ifdef HAVE_WINDOW_SYSTEM
1268 init_fringe_once (); /* Swap bitmaps if necessary. */
1269 #endif /* HAVE_WINDOW_SYSTEM */
1274 if (do_initial_setlocale
)
1277 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1278 Vsystem_time_locale
= Vprevious_system_time_locale
;
1283 #ifdef CLASH_DETECTION
1287 running_asynch_code
= 0;
1290 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1293 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1296 ns_alloc_autorelease_pool();
1297 if (!noninteractive
)
1299 #ifdef NS_IMPL_COCOA
1300 if (skip_args
< argc
)
1302 if (!strncmp(argv
[skip_args
], "-psn", 4))
1305 chdir (getenv ("HOME"));
1307 else if (skip_args
+1 < argc
&& !strncmp(argv
[skip_args
+1], "-psn", 4))
1310 chdir (getenv ("HOME"));
1315 #endif /* HAVE_NS */
1317 #ifdef HAVE_X_WINDOWS
1318 /* Stupid kludge to catch command-line display spec. We can't
1319 handle this argument entirely in window system dependent code
1320 because we don't even know which window system dependent code
1321 to run until we've recognized this argument. */
1323 char *displayname
= 0;
1324 int count_before
= skip_args
;
1326 /* Skip any number of -d options, but only use the last one. */
1329 int count_before_this
= skip_args
;
1331 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1333 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1338 count_before
= count_before_this
;
1341 /* If we have the form --display=NAME,
1342 convert it into -d name.
1343 This requires inserting a new element into argv. */
1344 if (displayname
!= 0 && skip_args
- count_before
== 1)
1346 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1349 for (j
= 0; j
< count_before
+ 1; j
++)
1351 new[count_before
+ 1] = "-d";
1352 new[count_before
+ 2] = displayname
;
1353 for (j
= count_before
+ 2; j
<argc
; j
++)
1354 new[j
+ 1] = argv
[j
];
1358 /* Change --display to -d, when its arg is separate. */
1359 else if (displayname
!= 0 && skip_args
> count_before
1360 && argv
[count_before
+ 1][1] == '-')
1361 argv
[count_before
+ 1] = "-d";
1365 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1366 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1370 /* Don't actually discard this arg. */
1371 skip_args
= count_before
;
1373 #else /* !HAVE_X_WINDOWS */
1376 int count_before
= skip_args
;
1378 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1379 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1382 skip_args
= count_before
;
1386 /* argmatch must not be used after here,
1387 except when bulding temacs
1388 because the -d argument has not been skipped in skip_args. */
1391 /* Call early 'cause init_environment needs it. */
1393 /* Set defaults for several environment variables. */
1395 init_environment (argc
, argv
, skip_args
);
1402 /* Initialize environment from registry settings. */
1403 init_environment (argv
);
1404 init_ntproc (); /* must precede init_editfns. */
1414 /* Initialize and GC-protect Vinitial_environment and
1415 Vprocess_environment before set_initial_environment fills them
1418 syms_of_callproc ();
1419 /* egetenv is a pretty low-level facility, which may get called in
1420 many circumstances; it seems flimsy to put off initializing it
1421 until calling init_callproc. */
1422 set_initial_environment ();
1423 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1424 if this is not done. Do it after set_global_environment so that we
1425 don't pollute Vglobal_environment. */
1426 /* Setting LANG here will defeat the startup locale processing... */
1431 init_buffer (); /* Init default directory of main buffer. */
1433 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1434 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1438 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1439 Lisp_Object old_log_max
;
1440 old_log_max
= Vmessage_log_max
;
1441 XSETFASTINT (Vmessage_log_max
, 0);
1442 message_dolog ("", 0, 1, 0);
1443 Vmessage_log_max
= old_log_max
;
1446 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1449 /* Intern the names of all standard functions and variables;
1450 define standard keys. */
1454 /* The basic levels of Lisp must come first. Note that
1455 syms_of_data and some others have already been called. */
1461 syms_of_floatfns ();
1464 syms_of_bytecode ();
1466 syms_of_casefiddle ();
1468 syms_of_category ();
1470 syms_of_character ();
1477 syms_of_filelock ();
1480 /* syms_of_keymap (); */
1488 syms_of_terminal ();
1494 syms_of_textprop ();
1495 syms_of_composite ();
1498 #endif /* WINDOWSNT */
1502 #ifdef HAVE_WINDOW_SYSTEM
1505 #endif /* HAVE_WINDOW_SYSTEM */
1506 #ifdef HAVE_X_WINDOWS
1511 syms_of_xsettings ();
1518 #endif /* HAVE_X_WINDOWS */
1529 syms_of_w32select ();
1532 #endif /* HAVE_NTGUI */
1538 syms_of_win16select();
1545 syms_of_nsselect ();
1547 #endif /* HAVE_NS */
1554 syms_of_dbusbind ();
1555 #endif /* HAVE_DBUS */
1559 #endif /* WINDOWSNT */
1561 keys_of_casefiddle ();
1564 keys_of_keyboard ();
1570 /* Initialization that must be done even if the global variable
1571 initialized is non zero. */
1573 globals_of_w32fns ();
1574 globals_of_w32menu ();
1575 globals_of_w32select ();
1576 #endif /* HAVE_NTGUI */
1581 init_editfns (); /* init_process uses Voperating_system_release. */
1582 init_process (); /* init_display uses add_keyboard_wait_descriptor. */
1583 init_keyboard (); /* This too must precede init_sys_modes. */
1584 if (!noninteractive
)
1585 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1588 #ifdef HAVE_WINDOW_SYSTEM
1591 #endif /* HAVE_WINDOW_SYSTEM */
1603 /* Handle -l loadup, args passed by Makefile. */
1604 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1605 Vtop_level
= Fcons (intern_c_string ("load"),
1606 Fcons (build_string (file
), Qnil
));
1607 /* Unless next switch is -nl, load "loadup.el" first thing. */
1609 Vtop_level
= Fcons (intern_c_string ("load"),
1610 Fcons (build_string ("loadup.el"), Qnil
));
1617 /* If the execution TZ happens to be the same as the dump TZ,
1618 change it to some other value and then change it back,
1619 to force the underlying implementation to reload the TZ info.
1620 This is needed on implementations that load TZ info from files,
1621 since the TZ file contents may differ between dump and execution. */
1622 char *tz
= getenv ("TZ");
1623 if (tz
&& !strcmp (tz
, dump_tz
))
1633 /* Set up for profiling. This is known to work on FreeBSD,
1634 GNU/Linux and MinGW. It might work on some other systems too.
1635 Give it a try and tell us if it works on your system. To compile
1636 for profiling, use the configure option --enable-profiling. */
1637 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined(__MINGW32__)
1641 extern void _mcleanup ();
1643 extern unsigned char etext
asm ("etext");
1647 #ifdef HAVE___EXECUTABLE_START
1648 /* This symbol is defined by GNU ld to the start of the text
1650 extern char __executable_start
[];
1652 extern void safe_bcopy ();
1656 #ifdef HAVE___EXECUTABLE_START
1657 monstartup (__executable_start
, &etext
);
1659 /* This uses safe_bcopy because that function comes first in the
1660 Emacs executable. It might be better to use something that
1661 gives the start of the text segment, but start_of_text is not
1662 defined on all systems now. */
1663 /* FIXME: Does not work on architectures with function
1665 monstartup (safe_bcopy
, &etext
);
1675 #ifdef LOCALTIME_CACHE
1676 /* Some versions of localtime have a bug. They cache the value of the time
1677 zone rather than looking it up every time. Since localtime() is
1678 called to bolt the undumping time into the undumped emacs, this
1679 results in localtime ignoring the TZ environment variable.
1680 This flushes the new TZ value into localtime. */
1682 #endif /* defined (LOCALTIME_CACHE) */
1684 /* Enter editor command loop. This never returns. */
1690 /* Sort the args so we can find the most important ones
1691 at the beginning of argv. */
1693 /* First, here's a table of all the standard options. */
1695 struct standard_args
1698 const char *longname
;
1703 const struct standard_args standard_args
[] =
1705 { "-version", "--version", 150, 0 },
1706 { "-chdir", "--chdir", 130, 1 },
1707 { "-t", "--terminal", 120, 1 },
1708 { "-nw", "--no-window-system", 110, 0 },
1709 { "-nw", "--no-windows", 110, 0 },
1710 { "-batch", "--batch", 100, 0 },
1711 { "-script", "--script", 100, 1 },
1712 { "-daemon", "--daemon", 99, 0 },
1713 { "-help", "--help", 90, 0 },
1714 { "-nl", "--no-loadup", 70, 0 },
1715 { "-nsl", "--no-site-lisp", 65, 0 },
1716 /* -d must come last before the options handled in startup.el. */
1717 { "-d", "--display", 60, 1 },
1718 { "-display", 0, 60, 1 },
1719 /* Now for the options handled in `command-line' (startup.el). */
1720 /* (Note that to imply -nsl, -Q is partially handled here.) */
1721 { "-Q", "--quick", 55, 0 },
1722 { "-quick", 0, 55, 0 },
1723 { "-q", "--no-init-file", 50, 0 },
1724 { "-no-init-file", 0, 50, 0 },
1725 { "-no-site-file", "--no-site-file", 40, 0 },
1726 { "-u", "--user", 30, 1 },
1727 { "-user", 0, 30, 1 },
1728 { "-debug-init", "--debug-init", 20, 0 },
1729 { "-iconic", "--iconic", 15, 0 },
1730 { "-D", "--basic-display", 12, 0},
1731 { "-basic-display", 0, 12, 0},
1732 { "-nbc", "--no-blinking-cursor", 12, 0 },
1733 /* Now for the options handled in `command-line-1' (startup.el). */
1734 { "-nbi", "--no-bitmap-icon", 10, 0 },
1735 { "-bg", "--background-color", 10, 1 },
1736 { "-background", 0, 10, 1 },
1737 { "-fg", "--foreground-color", 10, 1 },
1738 { "-foreground", 0, 10, 1 },
1739 { "-bd", "--border-color", 10, 1 },
1740 { "-bw", "--border-width", 10, 1 },
1741 { "-ib", "--internal-border", 10, 1 },
1742 { "-ms", "--mouse-color", 10, 1 },
1743 { "-cr", "--cursor-color", 10, 1 },
1744 { "-fn", "--font", 10, 1 },
1745 { "-font", 0, 10, 1 },
1746 { "-fs", "--fullscreen", 10, 0 },
1747 { "-fw", "--fullwidth", 10, 0 },
1748 { "-fh", "--fullheight", 10, 0 },
1749 { "-mm", "--maximized", 10, 0 },
1750 { "-g", "--geometry", 10, 1 },
1751 { "-geometry", 0, 10, 1 },
1752 { "-T", "--title", 10, 1 },
1753 { "-title", 0, 10, 1 },
1754 { "-name", "--name", 10, 1 },
1755 { "-xrm", "--xrm", 10, 1 },
1756 { "-parent-id", "--parent-id", 10, 1 },
1757 { "-r", "--reverse-video", 5, 0 },
1759 { "-reverse", 0, 5, 0 },
1760 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1761 { "-vb", "--vertical-scroll-bars", 5, 0 },
1762 { "-color", "--color", 5, 0},
1763 { "-no-splash", "--no-splash", 3, 0 },
1764 { "-no-desktop", "--no-desktop", 3, 0 },
1766 { "-NSAutoLaunch", 0, 5, 1 },
1767 { "-NXAutoLaunch", 0, 5, 1 },
1768 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1769 { "-_NSMachLaunch", 0, 85, 1 },
1770 { "-MachLaunch", 0, 85, 1 },
1771 { "-macosx", 0, 85, 0 },
1772 { "-NSHost", 0, 85, 1 },
1774 /* These have the same priority as ordinary file name args,
1775 so they are not reordered with respect to those. */
1776 { "-L", "--directory", 0, 1 },
1777 { "-directory", 0, 0, 1 },
1778 { "-l", "--load", 0, 1 },
1779 { "-load", 0, 0, 1 },
1780 /* This has no longname, because using --scriptload confuses sort_args,
1781 because then the --script long option seems to match twice; ie
1782 you can't have a long option which is a prefix of another long
1783 option. In any case, this is entirely an internal option. */
1784 { "-scriptload", NULL
, 0, 1 },
1785 { "-f", "--funcall", 0, 1 },
1786 { "-funcall", 0, 0, 1 },
1787 { "-eval", "--eval", 0, 1 },
1788 { "-execute", "--execute", 0, 1 },
1789 { "-find-file", "--find-file", 0, 1 },
1790 { "-visit", "--visit", 0, 1 },
1791 { "-file", "--file", 0, 1 },
1792 { "-insert", "--insert", 0, 1 },
1794 { "-NXOpen", 0, 0, 1 },
1795 { "-NXOpenTemp", 0, 0, 1 },
1796 { "-NSOpen", 0, 0, 1 },
1797 { "-NSOpenTemp", 0, 0, 1 },
1798 { "-GSFilePath", 0, 0, 1 },
1800 /* This should be processed after ordinary file name args and the like. */
1801 { "-kill", "--kill", -10, 0 },
1804 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1805 so that the highest priority ones come first.
1806 Do not change the order of elements of equal priority.
1807 If an option takes an argument, keep it and its argument together.
1809 If an option that takes no argument appears more
1810 than once, eliminate all but one copy of it. */
1813 sort_args (int argc
, char **argv
)
1815 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1816 /* For each element of argv,
1817 the corresponding element of options is:
1818 0 for an option that takes no arguments,
1819 1 for an option that takes one argument, etc.
1820 -1 for an ordinary non-option argument. */
1821 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1822 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1824 int incoming_used
= 1;
1828 /* Categorize all the options,
1829 and figure out which argv elts are option arguments. */
1830 for (from
= 1; from
< argc
; from
++)
1834 if (argv
[from
][0] == '-')
1839 /* If we have found "--", don't consider
1840 any more arguments as options. */
1841 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1843 /* Leave the "--", and everything following it, at the end. */
1844 for (; from
< argc
; from
++)
1846 priority
[from
] = -100;
1852 /* Look for a match with a known old-fashioned option. */
1853 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1854 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1856 options
[from
] = standard_args
[i
].nargs
;
1857 priority
[from
] = standard_args
[i
].priority
;
1858 if (from
+ standard_args
[i
].nargs
>= argc
)
1859 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1860 from
+= standard_args
[i
].nargs
;
1864 /* Look for a match with a known long option.
1865 MATCH is -1 if no match so far, -2 if two or more matches so far,
1866 >= 0 (the table index of the match) if just one match so far. */
1867 if (argv
[from
][1] == '-')
1870 thislen
= strlen (argv
[from
]);
1871 equals
= strchr (argv
[from
], '=');
1873 thislen
= equals
- argv
[from
];
1876 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1877 if (standard_args
[i
].longname
1878 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1887 /* If we found exactly one match, use that. */
1890 options
[from
] = standard_args
[match
].nargs
;
1891 priority
[from
] = standard_args
[match
].priority
;
1892 /* If --OPTION=VALUE syntax is used,
1893 this option uses just one argv element. */
1896 if (from
+ options
[from
] >= argc
)
1897 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1898 from
+= options
[from
];
1900 /* FIXME When match < 0, shouldn't there be some error,
1901 or at least indication to the user that there was a
1908 /* Copy the arguments, in order of decreasing priority, to NEW. */
1910 while (incoming_used
< argc
)
1913 int best_priority
= -9999;
1915 /* Find the highest priority remaining option.
1916 If several have equal priority, take the first of them. */
1917 for (from
= 1; from
< argc
; from
++)
1919 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1921 best_priority
= priority
[from
];
1924 /* Skip option arguments--they are tied to the options. */
1925 if (options
[from
] > 0)
1926 from
+= options
[from
];
1932 /* Copy the highest priority remaining option, with its args, to NEW.
1933 Unless it is a duplicate of the previous one. */
1934 if (! (options
[best
] == 0
1935 && ! strcmp (new[to
- 1], argv
[best
])))
1937 new[to
++] = argv
[best
];
1938 for (i
= 0; i
< options
[best
]; i
++)
1939 new[to
++] = argv
[best
+ i
+ 1];
1942 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1944 /* Clear out this option in ARGV. */
1946 for (i
= 0; i
< options
[best
]; i
++)
1947 argv
[best
+ i
+ 1] = 0;
1950 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1954 memcpy (argv
, new, sizeof (char *) * argc
);
1961 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1962 doc
: /* Exit the Emacs job and kill it.
1963 If ARG is an integer, return ARG as the exit program code.
1964 If ARG is a string, stuff it as keyboard input.
1966 This function is called upon receipt of the signals SIGTERM
1967 or SIGHUP, and upon SIGINT in batch mode.
1969 The value of `kill-emacs-hook', if not void,
1970 is a list of functions (of no args),
1971 all of which are called before Emacs is actually killed. */)
1974 struct gcpro gcpro1
;
1981 if (!NILP (Vrun_hooks
))
1982 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1986 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1988 /* If we have an auto-save list file,
1989 kill it because we are exiting Emacs deliberately (not crashing).
1990 Do it after shut_down_emacs, which does an auto-save. */
1991 if (STRINGP (Vauto_save_list_file_name
))
1992 unlink (SDATA (Vauto_save_list_file_name
));
1994 exit (INTEGERP (arg
) ? XINT (arg
) : EXIT_SUCCESS
);
1998 /* Perform an orderly shutdown of Emacs. Autosave any modified
1999 buffers, kill any child processes, clean up the terminal modes (if
2000 we're in the foreground), and other stuff like that. Don't perform
2001 any redisplay; this may be called when Emacs is shutting down in
2002 the background, or after its X connection has died.
2004 If SIG is a signal number, print a message for it.
2006 This is called by fatal signal handlers, X protocol error handlers,
2010 shut_down_emacs (int sig
, int no_x
, Lisp_Object stuff
)
2012 /* Prevent running of hooks from now on. */
2015 /* Don't update display from now on. */
2016 Vinhibit_redisplay
= Qt
;
2018 /* If we are controlling the terminal, reset terminal modes. */
2021 int pgrp
= EMACS_GETPGRP (0);
2022 int tpgrp
= tcgetpgrp (0);
2023 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
2025 reset_all_sys_modes ();
2026 if (sig
&& sig
!= SIGTERM
)
2027 fprintf (stderr
, "Fatal error (%d)", sig
);
2032 reset_all_sys_modes ();
2035 stuff_buffered_input (stuff
);
2037 inhibit_sentinels
= 1;
2038 kill_buffer_processes (Qnil
);
2039 Fdo_auto_save (Qt
, Qnil
);
2041 #ifdef CLASH_DETECTION
2042 unlock_all_files ();
2045 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2046 #ifdef HAVE_X_WINDOWS
2047 /* It's not safe to call intern here. Maybe we are crashing. */
2048 if (!noninteractive
&& SYMBOLP (Vinitial_window_system
)
2049 && SCHARS (SYMBOL_NAME (Vinitial_window_system
)) == 1
2050 && SREF (SYMBOL_NAME (Vinitial_window_system
), 0) == 'x'
2052 Fx_close_current_connection ();
2053 #endif /* HAVE_X_WINDOWS */
2057 /* There is a tendency for a SIGIO signal to arrive within exit,
2058 and cause a SIGHUP because the input descriptor is already closed. */
2060 signal (SIGIO
, SIG_IGN
);
2067 /* Do this only if terminating normally, we want glyph matrices
2068 etc. in a core dump. */
2069 if (sig
== 0 || sig
== SIGTERM
)
2071 check_glyph_memory ();
2072 check_message_stack ();
2080 ns_term_shutdown (sig
);
2088 /* FIXME: maybe this should go into header file, config.h seems the
2089 only one appropriate. */
2090 extern int unexec (const char *, const char *);
2092 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2093 doc
: /* Dump current state of Emacs into executable file FILENAME.
2094 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2095 This is used in the file `loadup.el' when building Emacs.
2097 You must run Emacs in batch mode in order to dump it. */)
2098 (Lisp_Object filename
, Lisp_Object symfile
)
2100 extern char my_edata
[];
2103 int count
= SPECPDL_INDEX ();
2107 if (! noninteractive
)
2108 error ("Dumping Emacs works only in batch mode");
2111 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2113 fprintf (stderr
, "**************************************************\n");
2114 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2115 fprintf (stderr
, "heap (%lu bytes). This usually means that exec-shield\n",
2117 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2118 fprintf (stderr
, "fail because of this. See the section about\n");
2119 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2120 fprintf (stderr
, "**************************************************\n");
2122 #endif /* GNU_LINUX */
2124 /* Bind `command-line-processed' to nil before dumping,
2125 so that the dumped Emacs will process its command line
2126 and set up to work with X windows if appropriate. */
2127 symbol
= intern ("command-line-processed");
2128 specbind (symbol
, Qnil
);
2130 CHECK_STRING (filename
);
2131 filename
= Fexpand_file_name (filename
, Qnil
);
2132 if (!NILP (symfile
))
2134 CHECK_STRING (symfile
);
2135 if (SCHARS (symfile
))
2136 symfile
= Fexpand_file_name (symfile
, Qnil
);
2140 Vpurify_flag
= Qnil
;
2143 set_time_zone_rule (dump_tz
);
2144 #ifndef LOCALTIME_CACHE
2145 /* Force a tz reload, since set_time_zone_rule doesn't. */
2151 /* Tell malloc where start of impure now is. */
2152 /* Also arrange for warnings when nearly out of space. */
2153 #ifndef SYSTEM_MALLOC
2155 /* On Windows, this was done before dumping, and that once suffices.
2156 Meanwhile, my_edata is not valid on Windows. */
2157 memory_warnings (my_edata
, malloc_warning
);
2158 #endif /* not WINDOWSNT */
2159 #if defined (HAVE_GTK_AND_PTHREAD) && !defined SYNC_INPUT
2160 /* Pthread may call malloc before main, and then we will get an endless
2161 loop, because pthread_self (see alloc.c) calls malloc the first time
2162 it is called on some systems. */
2163 reset_malloc_hooks ();
2165 #endif /* not SYSTEM_MALLOC */
2166 #ifdef DOUG_LEA_MALLOC
2167 malloc_state_ptr
= malloc_get_state ();
2170 #ifdef USE_MMAP_FOR_BUFFERS
2173 unexec (SDATA (filename
), !NILP (symfile
) ? SDATA (symfile
) : 0);
2174 #ifdef USE_MMAP_FOR_BUFFERS
2177 #ifdef DOUG_LEA_MALLOC
2178 free (malloc_state_ptr
);
2183 return unbind_to (count
, Qnil
);
2186 #endif /* not CANNOT_DUMP */
2189 /* Recover from setlocale (LC_ALL, ""). */
2193 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2194 so that numbers are read and printed properly for Emacs Lisp. */
2195 setlocale (LC_NUMERIC
, "C");
2198 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2201 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2203 if (! EQ (*plocale
, desired_locale
))
2205 *plocale
= desired_locale
;
2206 setlocale (category
, (STRINGP (desired_locale
)
2207 ? SSDATA (desired_locale
)
2212 /* Set system time locale to match Vsystem_time_locale, if possible. */
2214 synchronize_system_time_locale (void)
2216 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2217 Vsystem_time_locale
);
2220 /* Set system messages locale to match Vsystem_messages_locale, if
2223 synchronize_system_messages_locale (void)
2226 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2227 Vsystem_messages_locale
);
2230 #endif /* HAVE_SETLOCALE */
2237 decode_env_path (const char *evarname
, const char *defalt
)
2239 const char *path
, *p
;
2240 Lisp_Object lpath
, element
, tem
;
2242 /* It's okay to use getenv here, because this function is only used
2243 to initialize variables when Emacs starts up, and isn't called
2246 path
= getenv (evarname
);
2252 /* Ensure values from the environment use the proper directory separator. */
2255 char *path_copy
= alloca (strlen (path
) + 1);
2256 strcpy (path_copy
, path
);
2257 dostounix_filename (path_copy
);
2264 p
= strchr (path
, SEPCHAR
);
2266 p
= path
+ strlen (path
);
2267 element
= (p
- path
? make_string (path
, p
- path
)
2268 : build_string ("."));
2270 /* Add /: to the front of the name
2271 if it would otherwise be treated as magic. */
2272 tem
= Ffind_file_name_handler (element
, Qt
);
2274 /* However, if the handler says "I'm safe",
2275 don't bother adding /:. */
2279 prop
= Fget (tem
, intern ("safe-magic"));
2285 element
= concat2 (build_string ("/:"), element
);
2287 lpath
= Fcons (element
, lpath
);
2293 return Fnreverse (lpath
);
2296 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2297 doc
: /* Return non-nil if the current emacs process is a daemon.
2298 If the daemon was given a name argument, return that name. */)
2303 return build_string (daemon_name
);
2310 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2311 doc
: /* Mark the Emacs daemon as being initialized.
2312 This finishes the daemonization process by doing the other half of detaching
2313 from the parent process and its tty file descriptors. */)
2319 error ("This function can only be called if emacs is run as a daemon");
2321 if (daemon_pipe
[1] < 0)
2322 error ("The daemon has already been initialized");
2324 if (NILP (Vafter_init_time
))
2325 error ("This function can only be called after loading the init files");
2327 /* Get rid of stdin, stdout and stderr. */
2328 nfd
= open ("/dev/null", O_RDWR
);
2334 /* Closing the pipe will notify the parent that it can exit.
2335 FIXME: In case some other process inherited the pipe, closing it here
2336 won't notify the parent because it's still open elsewhere, so we
2337 additionally send a byte, just to make sure the parent really exits.
2338 Instead, we should probably close the pipe in start-process and
2339 call-process to make sure the pipe is never inherited by
2341 write (daemon_pipe
[1], "\n", 1);
2342 close (daemon_pipe
[1]);
2343 /* Set it to an invalid value so we know we've already run this function. */
2344 daemon_pipe
[1] = -1;
2349 syms_of_emacs (void)
2351 Qfile_name_handler_alist
= intern_c_string ("file-name-handler-alist");
2352 staticpro (&Qfile_name_handler_alist
);
2353 Qrisky_local_variable
= intern_c_string ("risky-local-variable");
2354 staticpro (&Qrisky_local_variable
);
2357 defsubr (&Sdump_emacs
);
2360 defsubr (&Skill_emacs
);
2362 defsubr (&Sinvocation_name
);
2363 defsubr (&Sinvocation_directory
);
2364 defsubr (&Sdaemonp
);
2365 defsubr (&Sdaemon_initialized
);
2367 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2368 doc
: /* Args passed by shell to Emacs, as a list of strings.
2369 Many arguments are deleted from the list as they are processed. */);
2371 DEFVAR_LISP ("system-type", Vsystem_type
,
2372 doc
: /* The value is a symbol indicating the type of operating system you are using.
2374 `gnu' compiled for a GNU Hurd system.
2375 `gnu/linux' compiled for a GNU/Linux system.
2376 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2377 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2378 `ms-dos' compiled as an MS-DOS application.
2379 `windows-nt' compiled as a native W32 application.
2380 `cygwin' compiled using the Cygwin library.
2381 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2382 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2383 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2384 /* Above values are from SYSTEM_TYPE in src/s/*.h. */
2386 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2387 doc
: /* Value is string indicating configuration Emacs was built for.
2388 On MS-Windows, the value reflects the OS flavor and version on which
2389 Emacs is running. */);
2390 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2392 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2393 doc
: /* String containing the configuration options Emacs was built with. */);
2394 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2396 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2397 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2399 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2400 doc
: /* Hook to be run when `kill-emacs' is called.
2401 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2402 in other similar situations), functions placed on this hook should not
2403 expect to be able to interact with the user. To ask for confirmation,
2404 see `kill-emacs-query-functions' instead.
2406 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2407 `noninteractive' was non-nil. */);
2408 Vkill_emacs_hook
= Qnil
;
2410 DEFVAR_LISP ("path-separator", Vpath_separator
,
2411 doc
: /* String containing the character that separates directories in
2412 search paths, such as PATH and other similar environment variables. */);
2415 Vpath_separator
= make_string (&c
, 1);
2418 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2419 doc
: /* The program name that was used to run Emacs.
2420 Any directory names are omitted. */);
2422 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2423 doc
: /* The directory in which the Emacs executable was found, to run it.
2424 The value is nil if that directory's name is not known. */);
2426 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2427 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2428 This is non-nil when we can't find those directories in their standard
2429 installed locations, but we can find them near where the Emacs executable
2431 Vinstallation_directory
= Qnil
;
2433 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2434 doc
: /* System locale for messages. */);
2435 Vsystem_messages_locale
= Qnil
;
2437 DEFVAR_LISP ("previous-system-messages-locale",
2438 Vprevious_system_messages_locale
,
2439 doc
: /* Most recently used system locale for messages. */);
2440 Vprevious_system_messages_locale
= Qnil
;
2442 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2443 doc
: /* System locale for time. */);
2444 Vsystem_time_locale
= Qnil
;
2446 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2447 doc
: /* Most recently used system locale for time. */);
2448 Vprevious_system_time_locale
= Qnil
;
2450 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2451 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2452 Vbefore_init_time
= Qnil
;
2454 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2455 doc
: /* Value of `current-time' after loading the init files.
2456 This is nil during initialization. */);
2457 Vafter_init_time
= Qnil
;
2459 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2460 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2461 inhibit_x_resources
= 0;
2463 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2464 doc
: /* Short copyright string for this version of Emacs. */);
2465 Vemacs_copyright
= build_string (emacs_copyright
);
2467 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2468 doc
: /* Version numbers of this version of Emacs. */);
2469 Vemacs_version
= build_string (emacs_version
);
2471 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2472 doc
: /* Alist of dynamic libraries vs external files implementing them.
2473 Each element is a list (LIBRARY FILE...), where the car is a symbol
2474 representing a supported external library, and the rest are strings giving
2475 alternate filenames for that library.
2477 Emacs tries to load the library from the files in the order they appear on
2478 the list; if none is loaded, the running session of Emacs won't have access
2481 Note that image types `pbm' and `xbm' do not need entries in this variable
2482 because they do not depend on external libraries and are always available.
2484 Also note that this is not a generic facility for accessing external
2485 libraries; only those already known by Emacs will be loaded. */);
2486 Vdynamic_library_alist
= Qnil
;
2487 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2489 /* Make sure IS_DAEMON starts up as false. */