1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2012
4 Free Software Foundation, Inc.
6 This file is part of GNU Emacs.
8 GNU Emacs is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
26 #include <sys/types.h>
30 #include <ignore-value.h>
40 #if defined WINDOWSNT || defined HAVE_NTGUI
41 #include "w32select.h"
45 #if defined HAVE_NTGUI && defined CYGWIN
49 #ifdef HAVE_WINDOW_SYSTEM
51 #endif /* HAVE_WINDOW_SYSTEM */
53 #ifdef NS_IMPL_GNUSTEP
54 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
55 #include <GNUstepBase/GSConfig.h>
59 #include "intervals.h"
60 #include "character.h"
66 #include "blockinput.h"
67 #include "syssignal.h"
70 #include "termhooks.h"
78 #if (defined PROFILING \
79 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
80 # include <sys/gmon.h>
81 extern void moncontrol (int mode
);
90 #include <sys/resource.h>
93 #ifdef HAVE_PERSONALITY_LINUX32
94 #include <sys/personality.h>
101 static const char emacs_version
[] = VERSION
;
102 static const char emacs_copyright
[] = COPYRIGHT
;
104 /* Empty lisp strings. To avoid having to build any others. */
105 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
108 /* Cache for externally loaded libraries. */
109 Lisp_Object Vlibrary_cache
;
112 /* Set after Emacs has started up the first time.
113 Prevents reinitialization of the Lisp world and keymaps
114 on subsequent starts. */
118 extern void unexec_init_emacs_zone (void);
121 #ifdef DOUG_LEA_MALLOC
122 /* Preserves a pointer to the memory allocated that copies that
123 static data inside glibc's malloc. */
124 static void *malloc_state_ptr
;
125 /* From glibc, a routine that returns a copy of the malloc internal state. */
126 extern void *malloc_get_state (void);
127 /* From glibc, a routine that overwrites the malloc internal state. */
128 extern int malloc_set_state (void*);
129 /* True if the MALLOC_CHECK_ environment variable was set while
130 dumping. Used to work around a bug in glibc's malloc. */
131 static bool malloc_using_checking
;
134 Lisp_Object Qfile_name_handler_alist
;
136 Lisp_Object Qrisky_local_variable
;
138 Lisp_Object Qkill_emacs
;
140 /* If true, Emacs should not attempt to use a window-specific code,
141 but instead should use the virtual terminal under which it was started. */
142 bool inhibit_window_system
;
144 /* If true, a filter or a sentinel is running. Tested to save the match
145 data on the first attempt to change it inside asynchronous code. */
146 bool running_asynch_code
;
148 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
149 /* If true, -d was specified, meaning we're using some window system. */
153 /* An address near the bottom of the stack.
154 Tells GC how to save a copy of the stack. */
157 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
158 /* The address where the heap starts (from the first sbrk (0) call). */
159 static void *my_heap_start
;
163 /* The gap between BSS end and heap start as far as we can tell. */
164 static uprintmax_t heap_bss_diff
;
167 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
170 On Cocoa, CoreFoundation lib fails in forked process:
171 http://developer.apple.com/ReleaseNotes/
172 CoreFoundation/CoreFoundation.html)
174 On Windows, a Cygwin fork child cannot access the USER subsystem.
176 We mark being in the exec'd process by a daemon name argument of
177 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
178 NAME is the original daemon name, if any. */
179 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
180 # define DAEMON_MUST_EXEC
183 /* True means running Emacs without interactive terminal. */
186 /* True means remove site-lisp directories from load-path. */
189 /* Name for the server started by the daemon.*/
190 static char *daemon_name
;
192 /* Pipe used to send exit notification to the daemon parent at
196 /* Save argv and argc. */
200 static void sort_args (int argc
, char **argv
);
201 static void syms_of_emacs (void);
203 /* MSVC needs each string be shorter than 2048 bytes, so the usage
204 strings below are split to not overflow this limit. */
206 Usage: %s [OPTION-OR-FILENAME]...\n\
208 Run Emacs, the extensible, customizable, self-documenting real-time\n\
209 display editor. The recommended way to start Emacs for normal editing\n\
210 is with no options at all.\n\
212 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
213 read the main documentation for these command-line arguments.\n\
215 Initialization options:\n\
217 --batch do not do interactive display; implies -q\n\
218 --chdir DIR change to directory DIR\n\
219 --daemon start a server in the background\n\
220 --debug-init enable Emacs Lisp debugger for init file\n\
221 --display, -d DISPLAY use X server DISPLAY\n\
222 --no-desktop do not load a saved desktop\n\
223 --no-init-file, -q load neither ~/.emacs nor default.el\n\
224 --no-shared-memory, -nl do not use shared memory\n\
225 --no-site-file do not load site-start.el\n\
226 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
227 --no-splash do not display a splash screen on startup\n\
228 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
229 --quick, -Q equivalent to:\n\
230 -q --no-site-file --no-site-lisp --no-splash\n\
231 --script FILE run FILE as an Emacs Lisp script\n\
232 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
233 --user, -u USER load ~USER/.emacs instead of your own\n\
239 FILE visit FILE using find-file\n\
240 +LINE go to line LINE in next FILE\n\
241 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
242 --directory, -L DIR add DIR to variable load-path\n\
243 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
244 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
245 --file FILE visit FILE using find-file\n\
246 --find-file FILE visit FILE using find-file\n\
247 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
248 --insert FILE insert contents of FILE into current buffer\n\
249 --kill exit without asking for confirmation\n\
250 --load, -l FILE load Emacs Lisp FILE using the load function\n\
251 --visit FILE visit FILE using find-file\n\
257 --background-color, -bg COLOR window background color\n\
258 --basic-display, -D disable many display features;\n\
259 used for debugging Emacs\n\
260 --border-color, -bd COLOR main border color\n\
261 --border-width, -bw WIDTH width of main border\n\
262 --color, --color=MODE override color mode for character terminals;\n\
263 MODE defaults to `auto', and\n\
264 can also be `never', `always',\n\
265 or a mode name like `ansi8'\n\
266 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
267 --font, -fn FONT default font; must be fixed-width\n\
268 --foreground-color, -fg COLOR window foreground color\n\
269 --fullheight, -fh make the first frame high as the screen\n\
270 --fullscreen, -fs make the first frame fullscreen\n\
271 --fullwidth, -fw make the first frame wide as the screen\n\
272 --maximized, -mm make the first frame maximized\n\
273 --geometry, -g GEOMETRY window geometry\n\
274 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
275 --iconic start Emacs in iconified state\n\
276 --internal-border, -ib WIDTH width between text and main border\n\
277 --line-spacing, -lsp PIXELS additional space to put between lines\n\
278 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
279 --name NAME title for initial Emacs frame\n\
280 --no-blinking-cursor, -nbc disable blinking cursor\n\
281 --reverse-video, -r, -rv switch foreground and background\n\
282 --title, -T TITLE title for initial Emacs frame\n\
283 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
284 --xrm XRESOURCES set additional X resources\n\
285 --parent-id XID set parent window\n\
286 --help display this help and exit\n\
287 --version output version information and exit\n\
291 You can generally also specify long option names with a single -; for\n\
292 example, -batch as well as --batch. You can use any unambiguous\n\
293 abbreviation for a --option.\n\
295 Various environment variables and window system resources also affect\n\
296 Emacs' operation. See the main documentation.\n\
298 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
299 section of the Emacs manual or the file BUGS.\n"
302 /* True if handling a fatal error already. */
303 bool fatal_error_in_progress
;
306 /* NS autrelease pool, for memory management. */
307 static void *ns_pool
;
312 /* Report a fatal error due to signal SIG, output a backtrace of at
313 most BACKTRACE_LIMIT lines, and exit. */
315 terminate_due_to_signal (int sig
, int backtrace_limit
)
317 signal (sig
, SIG_DFL
);
318 totally_unblock_input ();
320 /* If fatal error occurs in code below, avoid infinite recursion. */
321 if (! fatal_error_in_progress
)
323 fatal_error_in_progress
= 1;
325 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
326 Fkill_emacs (make_number (sig
));
328 shut_down_emacs (sig
, Qnil
);
329 emacs_backtrace (backtrace_limit
);
332 /* Signal the same code; this time it will really be fatal.
333 Since we're in a signal handler, the signal is blocked, so we
334 have to unblock it if we want to really receive it. */
338 sigemptyset (&unblocked
);
339 sigaddset (&unblocked
, sig
);
340 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
346 /* This shouldn't be executed, but it prevents a warning. */
352 /* Handler for SIGDANGER. */
354 handle_danger_signal (int sig
)
356 malloc_warning ("Operating system warns that virtual memory is running low.\n");
358 /* It might be unsafe to call do_auto_save now. */
359 force_auto_save_soon ();
363 deliver_danger_signal (int sig
)
365 deliver_process_signal (sig
, handle_danger_signal
);
369 /* Code for dealing with Lisp access to the Unix command line. */
372 init_cmdargs (int argc
, char **argv
, int skip_args
)
375 Lisp_Object name
, dir
, handler
;
376 ptrdiff_t count
= SPECPDL_INDEX ();
377 Lisp_Object raw_name
;
382 raw_name
= build_string (argv
[0]);
384 /* Add /: to the front of the name
385 if it would otherwise be treated as magic. */
386 handler
= Ffind_file_name_handler (raw_name
, Qt
);
387 if (! NILP (handler
))
388 raw_name
= concat2 (build_string ("/:"), raw_name
);
390 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
391 Vinvocation_directory
= Ffile_name_directory (raw_name
);
393 /* If we got no directory in argv[0], search PATH to find where
394 Emacs actually came from. */
395 if (NILP (Vinvocation_directory
))
398 int yes
= openp (Vexec_path
, Vinvocation_name
,
399 Vexec_suffixes
, &found
, make_number (X_OK
));
402 /* Add /: to the front of the name
403 if it would otherwise be treated as magic. */
404 handler
= Ffind_file_name_handler (found
, Qt
);
405 if (! NILP (handler
))
406 found
= concat2 (build_string ("/:"), found
);
407 Vinvocation_directory
= Ffile_name_directory (found
);
411 if (!NILP (Vinvocation_directory
)
412 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
413 /* Emacs was started with relative path, like ./emacs.
415 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
417 Vinstallation_directory
= Qnil
;
419 if (!NILP (Vinvocation_directory
))
421 dir
= Vinvocation_directory
;
423 /* If we are running from the build directory, set DIR to the
424 src subdirectory of the Emacs tree, like on Posix
426 if (SBYTES (dir
) > sizeof ("/i386/") - 1
427 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
429 dir
= Fexpand_file_name (build_string ("../.."), dir
);
430 #else /* !WINDOWSNT */
432 name
= Fexpand_file_name (Vinvocation_name
, dir
);
435 Lisp_Object tem
, lib_src_exists
;
436 Lisp_Object etc_exists
, info_exists
;
438 /* See if dir contains subdirs for use by Emacs.
439 Check for the ones that would exist in a build directory,
440 not including lisp and info. */
441 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
442 lib_src_exists
= Ffile_exists_p (tem
);
445 /* MSDOS installations frequently remove lib-src, but we still
446 must set installation-directory, or else info won't find
447 its files (it uses the value of installation-directory). */
448 tem
= Fexpand_file_name (build_string ("info"), dir
);
449 info_exists
= Ffile_exists_p (tem
);
454 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
456 tem
= Fexpand_file_name (build_string ("etc"), dir
);
457 etc_exists
= Ffile_exists_p (tem
);
458 if (!NILP (etc_exists
))
460 Vinstallation_directory
461 = Ffile_name_as_directory (dir
);
466 /* See if dir's parent contains those subdirs. */
467 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
468 lib_src_exists
= Ffile_exists_p (tem
);
472 /* See the MSDOS commentary above. */
473 tem
= Fexpand_file_name (build_string ("../info"), dir
);
474 info_exists
= Ffile_exists_p (tem
);
479 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
481 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
482 etc_exists
= Ffile_exists_p (tem
);
483 if (!NILP (etc_exists
))
485 tem
= Fexpand_file_name (build_string (".."), dir
);
486 Vinstallation_directory
487 = Ffile_name_as_directory (tem
);
492 /* If the Emacs executable is actually a link,
493 next try the dir that the link points into. */
494 tem
= Ffile_symlink_p (name
);
497 name
= Fexpand_file_name (tem
, dir
);
498 dir
= Ffile_name_directory (name
);
505 Vcommand_line_args
= Qnil
;
507 for (i
= argc
- 1; i
>= 0; i
--)
509 if (i
== 0 || i
> skip_args
)
510 /* For the moment, we keep arguments as is in unibyte strings.
511 They are decoded in the function command-line after we know
512 locale-coding-system. */
514 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
518 unbind_to (count
, Qnil
);
521 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
522 doc
: /* Return the program name that was used to run Emacs.
523 Any directory names are omitted. */)
526 return Fcopy_sequence (Vinvocation_name
);
529 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
531 doc
: /* Return the directory name in which the Emacs executable was located. */)
534 return Fcopy_sequence (Vinvocation_directory
);
539 /* A valid but unlikely value for the TZ environment value.
540 It is OK (though a bit slower) if the user actually chooses this value. */
541 static char dump_tz
[] = "UtC0";
544 #ifndef ORDINARY_LINK
545 /* We don't include crtbegin.o and crtend.o in the link,
546 so these functions and variables might be missed.
547 Provide dummy definitions to avoid error.
548 (We don't have any real constructors or destructors.) */
551 /* Define a dummy function F. Declare F too, to pacify gcc
552 -Wmissing-prototypes. */
553 #define DEFINE_DUMMY_FUNCTION(f) \
554 void f (void) ATTRIBUTE_CONST EXTERNALLY_VISIBLE; void f (void) {}
556 #ifndef GCC_CTORS_IN_LIBC
557 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
558 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
559 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
560 /* GNU/Linux has a bug in its library; avoid an error. */
562 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
564 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
565 #endif /* GCC_CTORS_IN_LIBC */
566 DEFINE_DUMMY_FUNCTION (__main
)
567 #endif /* __GNUC__ */
568 #endif /* ORDINARY_LINK */
570 /* Test whether the next argument in ARGV matches SSTR or a prefix of
571 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
572 (the argument is supposed to have a value) store in *VALPTR either
573 the next argument or the portion of this one after the equal sign.
574 ARGV is read starting at position *SKIPPTR; this index is advanced
575 by the number of arguments used.
577 Too bad we can't just use getopt for all of this, but we don't have
578 enough information to do it right. */
581 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
582 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)
644 if (!malloc_using_checking
)
645 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
646 ignored if the heap to be restored was constructed without
647 malloc checking. Can't use unsetenv, since that calls malloc. */
651 for (p
= environ
; p
&& *p
; p
++)
652 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
661 malloc_set_state (malloc_state_ptr
);
662 #ifndef XMALLOC_OVERRUN_CHECK
663 free (malloc_state_ptr
);
668 if (my_heap_start
== 0)
669 my_heap_start
= sbrk (0);
670 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
674 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
676 #endif /* DOUG_LEA_MALLOC */
681 main (int argc
, char **argv
)
686 char stack_bottom_variable
;
687 bool do_initial_setlocale
;
690 #ifdef HAVE_SETRLIMIT
696 #ifdef DAEMON_MUST_EXEC
705 #if defined (USE_GTK) && defined (G_SLICE_ALWAYS_MALLOC)
706 /* This is used by the Cygwin build. */
707 setenv ("G_SLICE", "always-malloc", 1);
713 extern char my_endbss
[];
714 extern char *my_endbss_static
;
716 if (my_heap_start
== 0)
717 my_heap_start
= sbrk (0);
719 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
723 #ifdef RUN_TIME_REMAP
725 run_time_remap (argv
[0]);
728 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
731 unexec_init_emacs_zone ();
734 sort_args (argc
, argv
);
736 while (argv
[argc
]) argc
++;
738 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
740 const char *version
, *copyright
;
743 Lisp_Object tem
, tem2
;
744 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
745 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
748 fprintf (stderr
, "Invalid value of `emacs-version'\n");
753 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
758 version
= SSDATA (tem
);
759 copyright
= SSDATA (tem2
);
764 version
= emacs_version
;
765 copyright
= emacs_copyright
;
767 printf ("GNU Emacs %s\n", version
);
768 printf ("%s\n", copyright
);
769 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
770 printf ("You may redistribute copies of Emacs\n");
771 printf ("under the terms of the GNU General Public License.\n");
772 printf ("For more information about these matters, ");
773 printf ("see the file named COPYING.\n");
777 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
778 if (chdir (ch_to_dir
) == -1)
780 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
781 argv
[0], ch_to_dir
, strerror (errno
));
785 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
786 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
788 #ifdef HAVE_PERSONALITY_LINUX32
789 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
791 static char heapexec
[] = "EMACS_HEAP_EXEC=true";
792 /* Set this so we only do this once. */
795 /* A flag to turn off address randomization which is introduced
796 in linux kernel shipped with fedora core 4 */
797 #define ADD_NO_RANDOMIZE 0x0040000
798 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
799 #undef ADD_NO_RANDOMIZE
801 execvp (argv
[0], argv
);
803 /* If the exec fails, try to dump anyway. */
806 #endif /* HAVE_PERSONALITY_LINUX32 */
808 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
809 /* Extend the stack space available.
810 Don't do that if dumping, since some systems (e.g. DJGPP)
811 might define a smaller stack limit at that time. */
814 && (!noninteractive
|| initialized
)
816 && !getrlimit (RLIMIT_STACK
, &rlim
))
819 extern size_t re_max_failures
;
820 /* Approximate the amount regex.c needs per unit of re_max_failures. */
821 int ratio
= 20 * sizeof (char *);
822 /* Then add 33% to cover the size of the smaller stacks that regex.c
823 successively allocates and discards, on its way to the maximum. */
825 /* Add in some extra to cover
826 what we're likely to use for other reasons. */
827 newlim
= re_max_failures
* ratio
+ 200000;
829 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
830 stack allocation routine for new process that the allocation
831 fails if stack limit is not on page boundary. So, round up the
832 new limit to page boundary. */
833 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
835 if (newlim
> rlim
.rlim_max
)
837 newlim
= rlim
.rlim_max
;
838 /* Don't let regex.c overflow the stack we have. */
839 re_max_failures
= (newlim
- 200000) / ratio
;
841 if (rlim
.rlim_cur
< newlim
)
842 rlim
.rlim_cur
= newlim
;
844 setrlimit (RLIMIT_STACK
, &rlim
);
846 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
848 /* Record (approximately) where the stack begins. */
849 stack_bottom
= &stack_bottom_variable
;
853 #ifndef SYSTEM_MALLOC
854 /* Arrange to get warning messages as memory fills up. */
855 memory_warnings (0, malloc_warning
);
857 /* Call malloc at least once, to run malloc_initialize_hook.
858 Also call realloc and free for consistency. */
859 free (realloc (malloc (4), 4));
861 #endif /* not SYSTEM_MALLOC */
863 #if defined (MSDOS) || defined (WINDOWSNT)
864 /* We do all file input/output as binary files. When we need to translate
865 newlines, we do that manually. */
867 #endif /* MSDOS || WINDOWSNT */
870 if (!isatty (fileno (stdin
)))
871 setmode (fileno (stdin
), O_BINARY
);
872 if (!isatty (fileno (stdout
)))
875 setmode (fileno (stdout
), O_BINARY
);
879 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
880 The build procedure uses this while dumping, to ensure that the
881 dumped Emacs does not have its system locale tables initialized,
882 as that might cause screwups when the dumped Emacs starts up. */
884 char *lc_all
= getenv ("LC_ALL");
885 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
888 /* Set locale now, so that initial error messages are localized properly.
889 fixup_locale must wait until later, since it builds strings. */
890 if (do_initial_setlocale
)
891 setlocale (LC_ALL
, "");
893 inhibit_window_system
= 0;
895 /* Handle the -t switch, which specifies filename to use as terminal. */
899 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
904 result
= emacs_open (term
, O_RDWR
, 0);
905 if (result
< 0 || dup (0) < 0)
907 char *errstring
= strerror (errno
);
908 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
913 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
916 fprintf (stderr
, "Using %s\n", term
);
917 #ifdef HAVE_WINDOW_SYSTEM
918 inhibit_window_system
= 1; /* -t => -nw */
925 /* Command line option --no-windows is deprecated and thus not mentioned
926 in the manual and usage information. */
927 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
928 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
929 inhibit_window_system
= 1;
931 /* Handle the -batch switch, which means don't do interactive display. */
933 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
936 Vundo_outer_limit
= Qnil
;
938 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
940 noninteractive
= 1; /* Set batch mode. */
941 /* Convert --script to -scriptload, un-skip it, and sort again
942 so that it will be handled in proper sequence. */
943 /* FIXME broken for --script=FILE - is that supposed to work? */
944 argv
[skip_args
- 1] = (char *) "-scriptload";
946 sort_args (argc
, argv
);
949 /* Handle the --help option, which gives a usage message. */
950 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
952 printf (USAGE1
, argv
[0], USAGE2
);
958 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
959 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
964 /* Start as a daemon: fork a new child process which will run the
965 rest of the initialization code, then exit.
967 Detaching a daemon requires the following steps:
971 - close the tty file-descriptors
973 We only want to do the last 2 steps once the daemon is ready to
974 serve requests, i.e. after loading .emacs (initialization).
975 OTOH initialization may start subprocesses (e.g. ispell) and these
976 should be run from the proper process (the one that will end up
977 running as daemon) and with the proper "session id" in order for
978 them to keep working after detaching, so fork and setsid need to be
979 performed before initialization.
981 We want to avoid exiting before the server socket is ready, so
982 use a pipe for synchronization. The parent waits for the child
983 to close its end of the pipe (using `daemon-initialized')
985 if (pipe (daemon_pipe
) == -1)
987 fprintf (stderr
, "Cannot pipe!\n");
991 #ifndef DAEMON_MUST_EXEC
993 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
994 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
995 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
998 #else /* DAEMON_MUST_EXEC */
999 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1000 f
= fork (); /* in orig */
1002 f
= 0; /* in exec'd */
1003 #endif /* !DAEMON_MUST_EXEC */
1009 /* Close unused writing end of the pipe. */
1010 close (daemon_pipe
[1]);
1012 /* Just wait for the child to close its end of the pipe. */
1015 retval
= read (daemon_pipe
[0], &buf
, 1);
1017 while (retval
== -1 && errno
== EINTR
);
1021 fprintf (stderr
, "Error reading status from child\n");
1024 else if (retval
== 0)
1026 fprintf (stderr
, "Error: server did not start correctly\n");
1030 close (daemon_pipe
[0]);
1035 fprintf (stderr
, "Cannot fork!\n");
1039 #ifdef DAEMON_MUST_EXEC
1041 /* In orig process, forked as child, OR in exec'd. */
1042 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1043 { /* In orig, child: now exec w/special daemon name. */
1046 snprintf (fdStr
, sizeof fdStr
,
1047 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1048 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1050 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1052 fprintf (stderr
, "daemon: child name too long\n");
1056 argv
[skip_args
] = fdStr
;
1058 execv (argv
[0], argv
);
1059 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1063 /* In exec'd: parse special dname into pipe and name info. */
1064 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1065 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1067 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1070 dname_arg2
[0] = '\0';
1071 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1073 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1075 #endif /* DAEMON_MUST_EXEC */
1078 daemon_name
= xstrdup (dname_arg
);
1079 /* Close unused reading end of the pipe. */
1080 close (daemon_pipe
[0]);
1081 /* Make sure that the used end of the pipe is closed on exec, so
1082 that it is not accessible to programs started from .emacs. */
1083 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1089 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1094 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1095 if (! noninteractive
)
1097 extern void malloc_enable_thread (void);
1099 malloc_enable_thread ();
1103 init_signals (dumping
);
1105 noninteractive1
= noninteractive
;
1107 /* Perform basic initializations (not merely interning symbols). */
1114 init_charset_once ();
1115 init_coding_once ();
1116 init_syntax_once (); /* Create standard syntax table. */
1117 init_category_once (); /* Create standard category table. */
1118 /* Must be done before init_buffer. */
1119 init_casetab_once ();
1120 init_buffer_once (); /* Create buffer table and some buffers. */
1121 init_minibuf_once (); /* Create list of minibuffers. */
1122 /* Must precede init_window_once. */
1124 /* Call syms_of_xfaces before init_window_once because that
1125 function creates Vterminal_frame. Termcap frames now use
1126 faces, and the face implementation uses some symbols as
1129 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1130 be better to arrange things not to have this dependency. */
1132 /* Call syms_of_keyboard before init_window_once because
1133 keyboard sets up symbols that include some face names that
1134 the X support will want to use. This can happen when
1135 CANNOT_DUMP is defined. */
1136 syms_of_keyboard ();
1138 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1141 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1143 /* Before syms_of_coding because it initializes Qcharsetp. */
1145 /* Before init_window_once, because it sets up the
1146 Vcoding_system_hash_table. */
1147 syms_of_coding (); /* This should be after syms_of_fileio. */
1149 init_window_once (); /* Init the window system. */
1150 #ifdef HAVE_WINDOW_SYSTEM
1151 init_fringe_once (); /* Swap bitmaps if necessary. */
1152 #endif /* HAVE_WINDOW_SYSTEM */
1157 if (do_initial_setlocale
)
1160 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1161 Vsystem_time_locale
= Vprevious_system_time_locale
;
1166 running_asynch_code
= 0;
1170 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1173 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1176 ns_pool
= ns_alloc_autorelease_pool ();
1177 if (!noninteractive
)
1179 #ifdef NS_IMPL_COCOA
1180 if (skip_args
< argc
)
1182 /* FIXME: Do the right thing if getenv returns NULL, or if
1184 if (!strncmp (argv
[skip_args
], "-psn", 4))
1187 chdir (getenv ("HOME"));
1189 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1192 chdir (getenv ("HOME"));
1197 #endif /* HAVE_NS */
1199 #ifdef HAVE_X_WINDOWS
1200 /* Stupid kludge to catch command-line display spec. We can't
1201 handle this argument entirely in window system dependent code
1202 because we don't even know which window system dependent code
1203 to run until we've recognized this argument. */
1205 char *displayname
= 0;
1206 int count_before
= skip_args
;
1208 /* Skip any number of -d options, but only use the last one. */
1211 int count_before_this
= skip_args
;
1213 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1215 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1220 count_before
= count_before_this
;
1223 /* If we have the form --display=NAME,
1224 convert it into -d name.
1225 This requires inserting a new element into argv. */
1226 if (displayname
&& count_before
< skip_args
)
1228 if (skip_args
== count_before
+ 1)
1230 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1231 (argc
- (count_before
+ 2)) * sizeof *argv
);
1232 argv
[count_before
+ 2] = displayname
;
1235 argv
[count_before
+ 1] = (char *) "-d";
1240 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1241 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1245 /* Don't actually discard this arg. */
1246 skip_args
= count_before
;
1248 #else /* !HAVE_X_WINDOWS */
1251 int count_before
= skip_args
;
1253 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1254 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1257 skip_args
= count_before
;
1261 /* argmatch must not be used after here,
1262 except when building temacs
1263 because the -d argument has not been skipped in skip_args. */
1266 /* Call early 'cause init_environment needs it. */
1268 /* Set defaults for several environment variables. */
1270 init_environment (argc
, argv
, skip_args
);
1277 globals_of_w32notify ();
1278 /* Initialize environment from registry settings. */
1279 init_environment (argv
);
1280 init_ntproc (dumping
); /* must precede init_editfns. */
1283 /* Initialize and GC-protect Vinitial_environment and
1284 Vprocess_environment before set_initial_environment fills them
1287 syms_of_callproc ();
1288 /* egetenv is a pretty low-level facility, which may get called in
1289 many circumstances; it seems flimsy to put off initializing it
1290 until calling init_callproc. Do not do it when dumping. */
1292 set_initial_environment ();
1294 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1295 if this is not done. Do it after set_global_environment so that we
1296 don't pollute Vglobal_environment. */
1297 /* Setting LANG here will defeat the startup locale processing... */
1302 init_buffer (); /* Init default directory of main buffer. */
1304 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1305 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1309 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1310 Lisp_Object old_log_max
;
1311 old_log_max
= Vmessage_log_max
;
1312 XSETFASTINT (Vmessage_log_max
, 0);
1313 message_dolog ("", 0, 1, 0);
1314 Vmessage_log_max
= old_log_max
;
1317 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1320 /* Check to see if Emacs has been installed correctly. */
1321 check_windows_init_file ();
1324 /* Intern the names of all standard functions and variables;
1325 define standard keys. */
1329 /* The basic levels of Lisp must come first. Note that
1330 syms_of_data and some others have already been called. */
1336 syms_of_floatfns ();
1339 syms_of_bytecode ();
1341 syms_of_casefiddle ();
1343 syms_of_category ();
1345 syms_of_character ();
1352 syms_of_filelock ();
1355 /* syms_of_keymap (); */
1363 syms_of_terminal ();
1369 syms_of_textprop ();
1370 syms_of_composite ();
1373 #endif /* WINDOWSNT */
1374 #if defined CYGWIN && defined HAVE_NTGUI
1380 #ifdef HAVE_WINDOW_SYSTEM
1383 #endif /* HAVE_WINDOW_SYSTEM */
1384 #ifdef HAVE_X_WINDOWS
1389 syms_of_xsettings ();
1396 #endif /* HAVE_X_WINDOWS */
1409 #endif /* HAVE_NTGUI */
1411 #if defined WINDOWSNT || defined HAVE_NTGUI
1412 syms_of_w32select ();
1419 syms_of_win16select ();
1426 syms_of_nsselect ();
1428 #endif /* HAVE_NS */
1435 syms_of_dbusbind ();
1436 #endif /* HAVE_DBUS */
1440 syms_of_w32notify ();
1441 #endif /* WINDOWSNT */
1443 syms_of_profiler ();
1445 keys_of_casefiddle ();
1448 keys_of_keyboard ();
1454 /* Initialization that must be done even if the global variable
1455 initialized is non zero. */
1457 globals_of_w32font ();
1458 globals_of_w32fns ();
1459 globals_of_w32menu ();
1460 #endif /* HAVE_NTGUI */
1462 #if defined WINDOWSNT || defined HAVE_NTGUI
1463 globals_of_w32select ();
1469 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1470 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1471 init_keyboard (); /* This too must precede init_sys_modes. */
1472 if (!noninteractive
)
1473 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1475 #ifdef HAVE_WINDOW_SYSTEM
1477 #endif /* HAVE_WINDOW_SYSTEM */
1485 /* Handle -l loadup, args passed by Makefile. */
1486 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1487 Vtop_level
= Fcons (intern_c_string ("load"),
1488 Fcons (build_string (file
), Qnil
));
1489 /* Unless next switch is -nl, load "loadup.el" first thing. */
1491 Vtop_level
= Fcons (intern_c_string ("load"),
1492 Fcons (build_string ("loadup.el"), Qnil
));
1499 /* If the execution TZ happens to be the same as the dump TZ,
1500 change it to some other value and then change it back,
1501 to force the underlying implementation to reload the TZ info.
1502 This is needed on implementations that load TZ info from files,
1503 since the TZ file contents may differ between dump and execution. */
1504 char *tz
= getenv ("TZ");
1505 if (tz
&& !strcmp (tz
, dump_tz
))
1515 /* Set up for profiling. This is known to work on FreeBSD,
1516 GNU/Linux and MinGW. It might work on some other systems too.
1517 Give it a try and tell us if it works on your system. To compile
1518 for profiling, use the configure option --enable-profiling. */
1519 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1524 extern unsigned char etext
asm ("etext");
1530 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1539 #ifdef LOCALTIME_CACHE
1540 /* Some versions of localtime have a bug. They cache the value of the time
1541 zone rather than looking it up every time. Since localtime() is
1542 called to bolt the undumping time into the undumped emacs, this
1543 results in localtime ignoring the TZ environment variable.
1544 This flushes the new TZ value into localtime. */
1546 #endif /* defined (LOCALTIME_CACHE) */
1548 /* Enter editor command loop. This never returns. */
1554 /* Sort the args so we can find the most important ones
1555 at the beginning of argv. */
1557 /* First, here's a table of all the standard options. */
1559 struct standard_args
1562 const char *longname
;
1567 static const struct standard_args standard_args
[] =
1569 { "-version", "--version", 150, 0 },
1570 { "-chdir", "--chdir", 130, 1 },
1571 { "-t", "--terminal", 120, 1 },
1572 { "-nw", "--no-window-system", 110, 0 },
1573 { "-nw", "--no-windows", 110, 0 },
1574 { "-batch", "--batch", 100, 0 },
1575 { "-script", "--script", 100, 1 },
1576 { "-daemon", "--daemon", 99, 0 },
1577 { "-help", "--help", 90, 0 },
1578 { "-nl", "--no-loadup", 70, 0 },
1579 { "-nsl", "--no-site-lisp", 65, 0 },
1580 /* -d must come last before the options handled in startup.el. */
1581 { "-d", "--display", 60, 1 },
1582 { "-display", 0, 60, 1 },
1583 /* Now for the options handled in `command-line' (startup.el). */
1584 /* (Note that to imply -nsl, -Q is partially handled here.) */
1585 { "-Q", "--quick", 55, 0 },
1586 { "-quick", 0, 55, 0 },
1587 { "-q", "--no-init-file", 50, 0 },
1588 { "-no-init-file", 0, 50, 0 },
1589 { "-no-site-file", "--no-site-file", 40, 0 },
1590 { "-u", "--user", 30, 1 },
1591 { "-user", 0, 30, 1 },
1592 { "-debug-init", "--debug-init", 20, 0 },
1593 { "-iconic", "--iconic", 15, 0 },
1594 { "-D", "--basic-display", 12, 0},
1595 { "-basic-display", 0, 12, 0},
1596 { "-nbc", "--no-blinking-cursor", 12, 0 },
1597 /* Now for the options handled in `command-line-1' (startup.el). */
1598 { "-nbi", "--no-bitmap-icon", 10, 0 },
1599 { "-bg", "--background-color", 10, 1 },
1600 { "-background", 0, 10, 1 },
1601 { "-fg", "--foreground-color", 10, 1 },
1602 { "-foreground", 0, 10, 1 },
1603 { "-bd", "--border-color", 10, 1 },
1604 { "-bw", "--border-width", 10, 1 },
1605 { "-ib", "--internal-border", 10, 1 },
1606 { "-ms", "--mouse-color", 10, 1 },
1607 { "-cr", "--cursor-color", 10, 1 },
1608 { "-fn", "--font", 10, 1 },
1609 { "-font", 0, 10, 1 },
1610 { "-fs", "--fullscreen", 10, 0 },
1611 { "-fw", "--fullwidth", 10, 0 },
1612 { "-fh", "--fullheight", 10, 0 },
1613 { "-mm", "--maximized", 10, 0 },
1614 { "-g", "--geometry", 10, 1 },
1615 { "-geometry", 0, 10, 1 },
1616 { "-T", "--title", 10, 1 },
1617 { "-title", 0, 10, 1 },
1618 { "-name", "--name", 10, 1 },
1619 { "-xrm", "--xrm", 10, 1 },
1620 { "-parent-id", "--parent-id", 10, 1 },
1621 { "-r", "--reverse-video", 5, 0 },
1623 { "-reverse", 0, 5, 0 },
1624 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1625 { "-vb", "--vertical-scroll-bars", 5, 0 },
1626 { "-color", "--color", 5, 0},
1627 { "-no-splash", "--no-splash", 3, 0 },
1628 { "-no-desktop", "--no-desktop", 3, 0 },
1630 { "-NSAutoLaunch", 0, 5, 1 },
1631 { "-NXAutoLaunch", 0, 5, 1 },
1632 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1633 { "-_NSMachLaunch", 0, 85, 1 },
1634 { "-MachLaunch", 0, 85, 1 },
1635 { "-macosx", 0, 85, 0 },
1636 { "-NSHost", 0, 85, 1 },
1638 /* These have the same priority as ordinary file name args,
1639 so they are not reordered with respect to those. */
1640 { "-L", "--directory", 0, 1 },
1641 { "-directory", 0, 0, 1 },
1642 { "-l", "--load", 0, 1 },
1643 { "-load", 0, 0, 1 },
1644 /* This has no longname, because using --scriptload confuses sort_args,
1645 because then the --script long option seems to match twice; ie
1646 you can't have a long option which is a prefix of another long
1647 option. In any case, this is entirely an internal option. */
1648 { "-scriptload", NULL
, 0, 1 },
1649 { "-f", "--funcall", 0, 1 },
1650 { "-funcall", 0, 0, 1 },
1651 { "-eval", "--eval", 0, 1 },
1652 { "-execute", "--execute", 0, 1 },
1653 { "-find-file", "--find-file", 0, 1 },
1654 { "-visit", "--visit", 0, 1 },
1655 { "-file", "--file", 0, 1 },
1656 { "-insert", "--insert", 0, 1 },
1658 { "-NXOpen", 0, 0, 1 },
1659 { "-NXOpenTemp", 0, 0, 1 },
1660 { "-NSOpen", 0, 0, 1 },
1661 { "-NSOpenTemp", 0, 0, 1 },
1662 { "-GSFilePath", 0, 0, 1 },
1664 /* This should be processed after ordinary file name args and the like. */
1665 { "-kill", "--kill", -10, 0 },
1668 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1669 so that the highest priority ones come first.
1670 Do not change the order of elements of equal priority.
1671 If an option takes an argument, keep it and its argument together.
1673 If an option that takes no argument appears more
1674 than once, eliminate all but one copy of it. */
1677 sort_args (int argc
, char **argv
)
1679 char **new = xmalloc (argc
* sizeof *new);
1680 /* For each element of argv,
1681 the corresponding element of options is:
1682 0 for an option that takes no arguments,
1683 1 for an option that takes one argument, etc.
1684 -1 for an ordinary non-option argument. */
1685 int *options
= xnmalloc (argc
, sizeof *options
);
1686 int *priority
= xnmalloc (argc
, sizeof *priority
);
1688 int incoming_used
= 1;
1692 /* Categorize all the options,
1693 and figure out which argv elts are option arguments. */
1694 for (from
= 1; from
< argc
; from
++)
1698 if (argv
[from
][0] == '-')
1702 /* If we have found "--", don't consider
1703 any more arguments as options. */
1704 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1706 /* Leave the "--", and everything following it, at the end. */
1707 for (; from
< argc
; from
++)
1709 priority
[from
] = -100;
1715 /* Look for a match with a known old-fashioned option. */
1716 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1717 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1719 options
[from
] = standard_args
[i
].nargs
;
1720 priority
[from
] = standard_args
[i
].priority
;
1721 if (from
+ standard_args
[i
].nargs
>= argc
)
1722 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1723 from
+= standard_args
[i
].nargs
;
1727 /* Look for a match with a known long option.
1728 MATCH is -1 if no match so far, -2 if two or more matches so far,
1729 >= 0 (the table index of the match) if just one match so far. */
1730 if (argv
[from
][1] == '-')
1732 char const *equals
= strchr (argv
[from
], '=');
1734 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1739 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1740 if (standard_args
[i
].longname
1741 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1750 /* If we found exactly one match, use that. */
1753 options
[from
] = standard_args
[match
].nargs
;
1754 priority
[from
] = standard_args
[match
].priority
;
1755 /* If --OPTION=VALUE syntax is used,
1756 this option uses just one argv element. */
1759 if (from
+ options
[from
] >= argc
)
1760 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1761 from
+= options
[from
];
1763 /* FIXME When match < 0, shouldn't there be some error,
1764 or at least indication to the user that there was a
1771 /* Copy the arguments, in order of decreasing priority, to NEW. */
1773 while (incoming_used
< argc
)
1776 int best_priority
= -9999;
1778 /* Find the highest priority remaining option.
1779 If several have equal priority, take the first of them. */
1780 for (from
= 1; from
< argc
; from
++)
1782 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1784 best_priority
= priority
[from
];
1787 /* Skip option arguments--they are tied to the options. */
1788 if (options
[from
] > 0)
1789 from
+= options
[from
];
1795 /* Copy the highest priority remaining option, with its args, to NEW.
1796 Unless it is a duplicate of the previous one. */
1797 if (! (options
[best
] == 0
1798 && ! strcmp (new[to
- 1], argv
[best
])))
1800 new[to
++] = argv
[best
];
1801 for (i
= 0; i
< options
[best
]; i
++)
1802 new[to
++] = argv
[best
+ i
+ 1];
1805 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1807 /* Clear out this option in ARGV. */
1809 for (i
= 0; i
< options
[best
]; i
++)
1810 argv
[best
+ i
+ 1] = 0;
1813 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1817 memcpy (argv
, new, sizeof (char *) * argc
);
1824 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1825 doc
: /* Exit the Emacs job and kill it.
1826 If ARG is an integer, return ARG as the exit program code.
1827 If ARG is a string, stuff it as keyboard input.
1829 This function is called upon receipt of the signals SIGTERM
1830 or SIGHUP, and upon SIGINT in batch mode.
1832 The value of `kill-emacs-hook', if not void,
1833 is a list of functions (of no args),
1834 all of which are called before Emacs is actually killed. */)
1837 struct gcpro gcpro1
;
1846 hook
= intern ("kill-emacs-hook");
1847 Frun_hooks (1, &hook
);
1851 #ifdef HAVE_X_WINDOWS
1852 /* Transfer any clipboards we own to the clipboard manager. */
1853 x_clipboard_manager_save_all ();
1856 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1859 ns_release_autorelease_pool (ns_pool
);
1862 /* If we have an auto-save list file,
1863 kill it because we are exiting Emacs deliberately (not crashing).
1864 Do it after shut_down_emacs, which does an auto-save. */
1865 if (STRINGP (Vauto_save_list_file_name
))
1866 unlink (SSDATA (Vauto_save_list_file_name
));
1869 exit_code
= (XINT (arg
) < 0
1870 ? XINT (arg
) | INT_MIN
1871 : XINT (arg
) & INT_MAX
);
1872 else if (noninteractive
&& (fflush (stdout
) || ferror (stdout
)))
1873 exit_code
= EXIT_FAILURE
;
1875 exit_code
= EXIT_SUCCESS
;
1880 /* Perform an orderly shutdown of Emacs. Autosave any modified
1881 buffers, kill any child processes, clean up the terminal modes (if
1882 we're in the foreground), and other stuff like that. Don't perform
1883 any redisplay; this may be called when Emacs is shutting down in
1884 the background, or after its X connection has died.
1886 If SIG is a signal number, print a message for it.
1888 This is called by fatal signal handlers, X protocol error handlers,
1892 shut_down_emacs (int sig
, Lisp_Object stuff
)
1894 /* Prevent running of hooks from now on. */
1897 /* Don't update display from now on. */
1898 Vinhibit_redisplay
= Qt
;
1900 /* If we are controlling the terminal, reset terminal modes. */
1903 pid_t pgrp
= EMACS_GETPGRP (0);
1904 pid_t tpgrp
= tcgetpgrp (0);
1905 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1907 reset_all_sys_modes ();
1908 if (sig
&& sig
!= SIGTERM
)
1910 static char const format
[] = "Fatal error %d: ";
1911 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1912 int buflen
= sprintf (buf
, format
, sig
);
1913 char const *sig_desc
= safe_strsignal (sig
);
1914 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1915 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1921 reset_all_sys_modes ();
1924 stuff_buffered_input (stuff
);
1926 inhibit_sentinels
= 1;
1927 kill_buffer_processes (Qnil
);
1928 Fdo_auto_save (Qt
, Qnil
);
1930 #ifdef CLASH_DETECTION
1931 unlock_all_files ();
1934 /* There is a tendency for a SIGIO signal to arrive within exit,
1935 and cause a SIGHUP because the input descriptor is already closed. */
1939 /* Do this only if terminating normally, we want glyph matrices
1940 etc. in a core dump. */
1941 if (sig
== 0 || sig
== SIGTERM
)
1943 check_glyph_memory ();
1944 check_message_stack ();
1952 ns_term_shutdown (sig
);
1956 xml_cleanup_parser ();
1970 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1971 doc
: /* Dump current state of Emacs into executable file FILENAME.
1972 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1973 This is used in the file `loadup.el' when building Emacs.
1975 You must run Emacs in batch mode in order to dump it. */)
1976 (Lisp_Object filename
, Lisp_Object symfile
)
1980 ptrdiff_t count
= SPECPDL_INDEX ();
1984 if (! noninteractive
)
1985 error ("Dumping Emacs works only in batch mode");
1989 /* Warn if the gap between BSS end and heap start is larger than this. */
1990 # define MAX_HEAP_BSS_DIFF (1024*1024)
1992 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
1994 fprintf (stderr
, "**************************************************\n");
1995 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
1996 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
1998 fprintf (stderr
, "or something similar is in effect. The dump may\n");
1999 fprintf (stderr
, "fail because of this. See the section about\n");
2000 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2001 fprintf (stderr
, "**************************************************\n");
2003 #endif /* GNU_LINUX */
2005 /* Bind `command-line-processed' to nil before dumping,
2006 so that the dumped Emacs will process its command line
2007 and set up to work with X windows if appropriate. */
2008 symbol
= intern ("command-line-processed");
2009 specbind (symbol
, Qnil
);
2011 CHECK_STRING (filename
);
2012 filename
= Fexpand_file_name (filename
, Qnil
);
2013 if (!NILP (symfile
))
2015 CHECK_STRING (symfile
);
2016 if (SCHARS (symfile
))
2017 symfile
= Fexpand_file_name (symfile
, Qnil
);
2021 Vpurify_flag
= Qnil
;
2024 set_time_zone_rule (dump_tz
);
2025 #ifndef LOCALTIME_CACHE
2026 /* Force a tz reload, since set_time_zone_rule doesn't. */
2032 /* Tell malloc where start of impure now is. */
2033 /* Also arrange for warnings when nearly out of space. */
2034 #ifndef SYSTEM_MALLOC
2036 /* On Windows, this was done before dumping, and that once suffices.
2037 Meanwhile, my_edata is not valid on Windows. */
2039 extern char my_edata
[];
2040 memory_warnings (my_edata
, malloc_warning
);
2042 #endif /* not WINDOWSNT */
2043 #endif /* not SYSTEM_MALLOC */
2044 #ifdef DOUG_LEA_MALLOC
2045 malloc_state_ptr
= malloc_get_state ();
2048 #ifdef USE_MMAP_FOR_BUFFERS
2051 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2052 #ifdef USE_MMAP_FOR_BUFFERS
2055 #ifdef DOUG_LEA_MALLOC
2056 free (malloc_state_ptr
);
2060 Vlibrary_cache
= Qnil
;
2062 #ifdef HAVE_WINDOW_SYSTEM
2063 reset_image_types ();
2068 return unbind_to (count
, Qnil
);
2071 #endif /* not CANNOT_DUMP */
2074 /* Recover from setlocale (LC_ALL, ""). */
2078 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2079 so that numbers are read and printed properly for Emacs Lisp. */
2080 setlocale (LC_NUMERIC
, "C");
2083 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2086 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2088 if (! EQ (*plocale
, desired_locale
))
2090 *plocale
= desired_locale
;
2091 setlocale (category
, (STRINGP (desired_locale
)
2092 ? SSDATA (desired_locale
)
2097 /* Set system time locale to match Vsystem_time_locale, if possible. */
2099 synchronize_system_time_locale (void)
2101 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2102 Vsystem_time_locale
);
2105 /* Set system messages locale to match Vsystem_messages_locale, if
2108 synchronize_system_messages_locale (void)
2111 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2112 Vsystem_messages_locale
);
2115 #endif /* HAVE_SETLOCALE */
2119 decode_env_path (const char *evarname
, const char *defalt
)
2121 const char *path
, *p
;
2122 Lisp_Object lpath
, element
, tem
;
2125 const char *emacs_dir
= egetenv ("emacs_dir");
2126 static const char *emacs_dir_env
= "%emacs_dir%/";
2127 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2130 /* It's okay to use getenv here, because this function is only used
2131 to initialize variables when Emacs starts up, and isn't called
2134 path
= getenv (evarname
);
2145 /* Ensure values from the environment use the proper directory separator. */
2148 char *path_copy
= alloca (strlen (path
) + 1);
2149 strcpy (path_copy
, path
);
2150 dostounix_filename (path_copy
);
2157 p
= strchr (path
, SEPCHAR
);
2159 p
= path
+ strlen (path
);
2160 element
= (p
- path
? make_string (path
, p
- path
)
2161 : build_string ("."));
2163 /* Relative file names in the default path are interpreted as
2164 being relative to $emacs_dir. */
2165 if (emacs_dir
&& defaulted
2166 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2167 element
= Fexpand_file_name (Fsubstring (element
,
2168 make_number (emacs_dir_len
),
2170 build_string (emacs_dir
));
2173 /* Add /: to the front of the name
2174 if it would otherwise be treated as magic. */
2175 tem
= Ffind_file_name_handler (element
, Qt
);
2177 /* However, if the handler says "I'm safe",
2178 don't bother adding /:. */
2182 prop
= Fget (tem
, intern ("safe-magic"));
2188 element
= concat2 (build_string ("/:"), element
);
2190 lpath
= Fcons (element
, lpath
);
2196 return Fnreverse (lpath
);
2199 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2200 doc
: /* Return non-nil if the current emacs process is a daemon.
2201 If the daemon was given a name argument, return that name. */)
2206 return build_string (daemon_name
);
2213 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2214 doc
: /* Mark the Emacs daemon as being initialized.
2215 This finishes the daemonization process by doing the other half of detaching
2216 from the parent process and its tty file descriptors. */)
2223 error ("This function can only be called if emacs is run as a daemon");
2225 if (daemon_pipe
[1] < 0)
2226 error ("The daemon has already been initialized");
2228 if (NILP (Vafter_init_time
))
2229 error ("This function can only be called after loading the init files");
2231 /* Get rid of stdin, stdout and stderr. */
2232 nfd
= open ("/dev/null", O_RDWR
);
2234 err
|= dup2 (nfd
, 0) < 0;
2235 err
|= dup2 (nfd
, 1) < 0;
2236 err
|= dup2 (nfd
, 2) < 0;
2237 err
|= close (nfd
) != 0;
2239 /* Closing the pipe will notify the parent that it can exit.
2240 FIXME: In case some other process inherited the pipe, closing it here
2241 won't notify the parent because it's still open elsewhere, so we
2242 additionally send a byte, just to make sure the parent really exits.
2243 Instead, we should probably close the pipe in start-process and
2244 call-process to make sure the pipe is never inherited by
2246 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2247 err
|= close (daemon_pipe
[1]) != 0;
2248 /* Set it to an invalid value so we know we've already run this function. */
2249 daemon_pipe
[1] = -1;
2252 error ("I/O error during daemon initialization");
2257 syms_of_emacs (void)
2259 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2260 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2261 DEFSYM (Qkill_emacs
, "kill-emacs");
2264 defsubr (&Sdump_emacs
);
2267 defsubr (&Skill_emacs
);
2269 defsubr (&Sinvocation_name
);
2270 defsubr (&Sinvocation_directory
);
2271 defsubr (&Sdaemonp
);
2272 defsubr (&Sdaemon_initialized
);
2274 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2275 doc
: /* Args passed by shell to Emacs, as a list of strings.
2276 Many arguments are deleted from the list as they are processed. */);
2278 DEFVAR_LISP ("system-type", Vsystem_type
,
2279 doc
: /* The value is a symbol indicating the type of operating system you are using.
2281 `gnu' compiled for a GNU Hurd system.
2282 `gnu/linux' compiled for a GNU/Linux system.
2283 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2284 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2285 `ms-dos' compiled as an MS-DOS application.
2286 `windows-nt' compiled as a native W32 application.
2287 `cygwin' compiled using the Cygwin library.
2288 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2289 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2290 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2291 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2293 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2294 doc
: /* Value is string indicating configuration Emacs was built for.
2295 On MS-Windows, the value reflects the OS flavor and version on which
2296 Emacs is running. */);
2297 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2299 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2300 doc
: /* String containing the configuration options Emacs was built with. */);
2301 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2303 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2304 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2306 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2307 doc
: /* Hook run when `kill-emacs' is called.
2308 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2309 in other similar situations), functions placed on this hook should not
2310 expect to be able to interact with the user. To ask for confirmation,
2311 see `kill-emacs-query-functions' instead.
2313 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2314 `noninteractive' was non-nil. */);
2315 Vkill_emacs_hook
= Qnil
;
2317 DEFVAR_LISP ("path-separator", Vpath_separator
,
2318 doc
: /* String containing the character that separates directories in
2319 search paths, such as PATH and other similar environment variables. */);
2322 Vpath_separator
= make_string (&c
, 1);
2325 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2326 doc
: /* The program name that was used to run Emacs.
2327 Any directory names are omitted. */);
2329 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2330 doc
: /* The directory in which the Emacs executable was found, to run it.
2331 The value is nil if that directory's name is not known. */);
2333 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2334 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2335 In an installed Emacs, this is normally nil. It is non-nil if
2336 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2337 within the variable `invocation-directory' or its parent. For example,
2338 this is the case when running an uninstalled Emacs executable from its
2339 build directory. */);
2340 Vinstallation_directory
= Qnil
;
2342 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2343 doc
: /* System locale for messages. */);
2344 Vsystem_messages_locale
= Qnil
;
2346 DEFVAR_LISP ("previous-system-messages-locale",
2347 Vprevious_system_messages_locale
,
2348 doc
: /* Most recently used system locale for messages. */);
2349 Vprevious_system_messages_locale
= Qnil
;
2351 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2352 doc
: /* System locale for time. */);
2353 Vsystem_time_locale
= Qnil
;
2355 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2356 doc
: /* Most recently used system locale for time. */);
2357 Vprevious_system_time_locale
= Qnil
;
2359 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2360 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2361 Vbefore_init_time
= Qnil
;
2363 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2364 doc
: /* Value of `current-time' after loading the init files.
2365 This is nil during initialization. */);
2366 Vafter_init_time
= Qnil
;
2368 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2369 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2370 inhibit_x_resources
= 0;
2372 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2373 doc
: /* Short copyright string for this version of Emacs. */);
2374 Vemacs_copyright
= build_string (emacs_copyright
);
2376 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2377 doc
: /* Version numbers of this version of Emacs. */);
2378 Vemacs_version
= build_string (emacs_version
);
2380 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2381 doc
: /* Alist of dynamic libraries vs external files implementing them.
2382 Each element is a list (LIBRARY FILE...), where the car is a symbol
2383 representing a supported external library, and the rest are strings giving
2384 alternate filenames for that library.
2386 Emacs tries to load the library from the files in the order they appear on
2387 the list; if none is loaded, the running session of Emacs won't have access
2390 Note that image types `pbm' and `xbm' do not need entries in this variable
2391 because they do not depend on external libraries and are always available.
2393 Also note that this is not a generic facility for accessing external
2394 libraries; only those already known by Emacs will be loaded. */);
2395 Vdynamic_library_alist
= Qnil
;
2396 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2399 Vlibrary_cache
= Qnil
;
2400 staticpro (&Vlibrary_cache
);
2403 /* Make sure IS_DAEMON starts up as false. */