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 <close-stream.h>
31 #include <ignore-value.h>
41 #if defined WINDOWSNT || defined HAVE_NTGUI
42 #include "w32select.h"
46 #if defined HAVE_NTGUI && defined CYGWIN
50 #ifdef HAVE_WINDOW_SYSTEM
52 #endif /* HAVE_WINDOW_SYSTEM */
54 #ifdef NS_IMPL_GNUSTEP
55 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
56 #include <GNUstepBase/GSConfig.h>
60 #include "intervals.h"
61 #include "character.h"
67 #include "blockinput.h"
68 #include "syssignal.h"
71 #include "termhooks.h"
79 #if (defined PROFILING \
80 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
81 # include <sys/gmon.h>
82 extern void moncontrol (int mode
);
91 #include <sys/resource.h>
94 #ifdef HAVE_PERSONALITY_LINUX32
95 #include <sys/personality.h>
98 static const char emacs_version
[] = VERSION
;
99 static const char emacs_copyright
[] = COPYRIGHT
;
101 /* Empty lisp strings. To avoid having to build any others. */
102 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
105 /* Cache for externally loaded libraries. */
106 Lisp_Object Vlibrary_cache
;
109 /* Set after Emacs has started up the first time.
110 Prevents reinitialization of the Lisp world and keymaps
111 on subsequent starts. */
115 extern void unexec_init_emacs_zone (void);
118 #ifdef DOUG_LEA_MALLOC
119 /* Preserves a pointer to the memory allocated that copies that
120 static data inside glibc's malloc. */
121 static void *malloc_state_ptr
;
122 /* From glibc, a routine that returns a copy of the malloc internal state. */
123 extern void *malloc_get_state (void);
124 /* From glibc, a routine that overwrites the malloc internal state. */
125 extern int malloc_set_state (void*);
126 /* True if the MALLOC_CHECK_ environment variable was set while
127 dumping. Used to work around a bug in glibc's malloc. */
128 static bool malloc_using_checking
;
131 Lisp_Object Qfile_name_handler_alist
;
133 Lisp_Object Qrisky_local_variable
;
135 Lisp_Object Qkill_emacs
;
137 /* If true, Emacs should not attempt to use a window-specific code,
138 but instead should use the virtual terminal under which it was started. */
139 bool inhibit_window_system
;
141 /* If true, a filter or a sentinel is running. Tested to save the match
142 data on the first attempt to change it inside asynchronous code. */
143 bool running_asynch_code
;
145 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
146 /* If true, -d was specified, meaning we're using some window system. */
150 /* An address near the bottom of the stack.
151 Tells GC how to save a copy of the stack. */
154 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
155 /* The address where the heap starts (from the first sbrk (0) call). */
156 static void *my_heap_start
;
160 /* The gap between BSS end and heap start as far as we can tell. */
161 static uprintmax_t heap_bss_diff
;
164 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
167 On Cocoa, CoreFoundation lib fails in forked process:
168 http://developer.apple.com/ReleaseNotes/
169 CoreFoundation/CoreFoundation.html)
171 On Windows, a Cygwin fork child cannot access the USER subsystem.
173 We mark being in the exec'd process by a daemon name argument of
174 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
175 NAME is the original daemon name, if any. */
176 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
177 # define DAEMON_MUST_EXEC
180 /* True means running Emacs without interactive terminal. */
183 /* True means remove site-lisp directories from load-path. */
186 /* Name for the server started by the daemon.*/
187 static char *daemon_name
;
189 /* Pipe used to send exit notification to the daemon parent at
193 /* Save argv and argc. */
197 static void sort_args (int argc
, char **argv
);
198 static void syms_of_emacs (void);
200 /* MSVC needs each string be shorter than 2048 bytes, so the usage
201 strings below are split to not overflow this limit. */
203 Usage: %s [OPTION-OR-FILENAME]...\n\
205 Run Emacs, the extensible, customizable, self-documenting real-time\n\
206 display editor. The recommended way to start Emacs for normal editing\n\
207 is with no options at all.\n\
209 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
210 read the main documentation for these command-line arguments.\n\
212 Initialization options:\n\
214 --batch do not do interactive display; implies -q\n\
215 --chdir DIR change to directory DIR\n\
216 --daemon start a server in the background\n\
217 --debug-init enable Emacs Lisp debugger for init file\n\
218 --display, -d DISPLAY use X server DISPLAY\n\
219 --no-desktop do not load a saved desktop\n\
220 --no-init-file, -q load neither ~/.emacs nor default.el\n\
221 --no-shared-memory, -nl do not use shared memory\n\
222 --no-site-file do not load site-start.el\n\
223 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
224 --no-splash do not display a splash screen on startup\n\
225 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
226 --quick, -Q equivalent to:\n\
227 -q --no-site-file --no-site-lisp --no-splash\n\
228 --script FILE run FILE as an Emacs Lisp script\n\
229 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
230 --user, -u USER load ~USER/.emacs instead of your own\n\
236 FILE visit FILE using find-file\n\
237 +LINE go to line LINE in next FILE\n\
238 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
239 --directory, -L DIR add DIR to variable load-path\n\
240 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
241 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
242 --file FILE visit FILE using find-file\n\
243 --find-file FILE visit FILE using find-file\n\
244 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
245 --insert FILE insert contents of FILE into current buffer\n\
246 --kill exit without asking for confirmation\n\
247 --load, -l FILE load Emacs Lisp FILE using the load function\n\
248 --visit FILE visit FILE using find-file\n\
254 --background-color, -bg COLOR window background color\n\
255 --basic-display, -D disable many display features;\n\
256 used for debugging Emacs\n\
257 --border-color, -bd COLOR main border color\n\
258 --border-width, -bw WIDTH width of main border\n\
259 --color, --color=MODE override color mode for character terminals;\n\
260 MODE defaults to `auto', and\n\
261 can also be `never', `always',\n\
262 or a mode name like `ansi8'\n\
263 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
264 --font, -fn FONT default font; must be fixed-width\n\
265 --foreground-color, -fg COLOR window foreground color\n\
266 --fullheight, -fh make the first frame high as the screen\n\
267 --fullscreen, -fs make the first frame fullscreen\n\
268 --fullwidth, -fw make the first frame wide as the screen\n\
269 --maximized, -mm make the first frame maximized\n\
270 --geometry, -g GEOMETRY window geometry\n\
271 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
272 --iconic start Emacs in iconified state\n\
273 --internal-border, -ib WIDTH width between text and main border\n\
274 --line-spacing, -lsp PIXELS additional space to put between lines\n\
275 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
276 --name NAME title for initial Emacs frame\n\
277 --no-blinking-cursor, -nbc disable blinking cursor\n\
278 --reverse-video, -r, -rv switch foreground and background\n\
279 --title, -T TITLE title for initial Emacs frame\n\
280 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
281 --xrm XRESOURCES set additional X resources\n\
282 --parent-id XID set parent window\n\
283 --help display this help and exit\n\
284 --version output version information and exit\n\
288 You can generally also specify long option names with a single -; for\n\
289 example, -batch as well as --batch. You can use any unambiguous\n\
290 abbreviation for a --option.\n\
292 Various environment variables and window system resources also affect\n\
293 Emacs' operation. See the main documentation.\n\
295 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
296 section of the Emacs manual or the file BUGS.\n"
299 /* True if handling a fatal error already. */
300 bool fatal_error_in_progress
;
303 /* NS autrelease pool, for memory management. */
304 static void *ns_pool
;
309 /* Report a fatal error due to signal SIG, output a backtrace of at
310 most BACKTRACE_LIMIT lines, and exit. */
312 terminate_due_to_signal (int sig
, int backtrace_limit
)
314 signal (sig
, SIG_DFL
);
315 totally_unblock_input ();
317 /* If fatal error occurs in code below, avoid infinite recursion. */
318 if (! fatal_error_in_progress
)
320 fatal_error_in_progress
= 1;
322 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
323 Fkill_emacs (make_number (sig
));
325 shut_down_emacs (sig
, Qnil
);
326 emacs_backtrace (backtrace_limit
);
329 /* Signal the same code; this time it will really be fatal.
330 Since we're in a signal handler, the signal is blocked, so we
331 have to unblock it if we want to really receive it. */
335 sigemptyset (&unblocked
);
336 sigaddset (&unblocked
, sig
);
337 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
343 /* This shouldn't be executed, but it prevents a warning. */
349 /* Handler for SIGDANGER. */
351 handle_danger_signal (int sig
)
353 malloc_warning ("Operating system warns that virtual memory is running low.\n");
355 /* It might be unsafe to call do_auto_save now. */
356 force_auto_save_soon ();
360 deliver_danger_signal (int sig
)
362 deliver_process_signal (sig
, handle_danger_signal
);
366 /* Code for dealing with Lisp access to the Unix command line. */
369 init_cmdargs (int argc
, char **argv
, int skip_args
)
372 Lisp_Object name
, dir
, handler
;
373 ptrdiff_t count
= SPECPDL_INDEX ();
374 Lisp_Object raw_name
;
379 raw_name
= build_string (argv
[0]);
381 /* Add /: to the front of the name
382 if it would otherwise be treated as magic. */
383 handler
= Ffind_file_name_handler (raw_name
, Qt
);
384 if (! NILP (handler
))
385 raw_name
= concat2 (build_string ("/:"), raw_name
);
387 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
388 Vinvocation_directory
= Ffile_name_directory (raw_name
);
390 /* If we got no directory in argv[0], search PATH to find where
391 Emacs actually came from. */
392 if (NILP (Vinvocation_directory
))
395 int yes
= openp (Vexec_path
, Vinvocation_name
,
396 Vexec_suffixes
, &found
, make_number (X_OK
));
399 /* Add /: to the front of the name
400 if it would otherwise be treated as magic. */
401 handler
= Ffind_file_name_handler (found
, Qt
);
402 if (! NILP (handler
))
403 found
= concat2 (build_string ("/:"), found
);
404 Vinvocation_directory
= Ffile_name_directory (found
);
408 if (!NILP (Vinvocation_directory
)
409 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
410 /* Emacs was started with relative path, like ./emacs.
412 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
414 Vinstallation_directory
= Qnil
;
416 if (!NILP (Vinvocation_directory
))
418 dir
= Vinvocation_directory
;
420 /* If we are running from the build directory, set DIR to the
421 src subdirectory of the Emacs tree, like on Posix
423 if (SBYTES (dir
) > sizeof ("/i386/") - 1
424 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
426 dir
= Fexpand_file_name (build_string ("../.."), dir
);
427 #else /* !WINDOWSNT */
429 name
= Fexpand_file_name (Vinvocation_name
, dir
);
432 Lisp_Object tem
, lib_src_exists
;
433 Lisp_Object etc_exists
, info_exists
;
435 /* See if dir contains subdirs for use by Emacs.
436 Check for the ones that would exist in a build directory,
437 not including lisp and info. */
438 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
439 lib_src_exists
= Ffile_exists_p (tem
);
442 /* MSDOS installations frequently remove lib-src, but we still
443 must set installation-directory, or else info won't find
444 its files (it uses the value of installation-directory). */
445 tem
= Fexpand_file_name (build_string ("info"), dir
);
446 info_exists
= Ffile_exists_p (tem
);
451 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
453 tem
= Fexpand_file_name (build_string ("etc"), dir
);
454 etc_exists
= Ffile_exists_p (tem
);
455 if (!NILP (etc_exists
))
457 Vinstallation_directory
458 = Ffile_name_as_directory (dir
);
463 /* See if dir's parent contains those subdirs. */
464 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
465 lib_src_exists
= Ffile_exists_p (tem
);
469 /* See the MSDOS commentary above. */
470 tem
= Fexpand_file_name (build_string ("../info"), dir
);
471 info_exists
= Ffile_exists_p (tem
);
476 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
478 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
479 etc_exists
= Ffile_exists_p (tem
);
480 if (!NILP (etc_exists
))
482 tem
= Fexpand_file_name (build_string (".."), dir
);
483 Vinstallation_directory
484 = Ffile_name_as_directory (tem
);
489 /* If the Emacs executable is actually a link,
490 next try the dir that the link points into. */
491 tem
= Ffile_symlink_p (name
);
494 name
= Fexpand_file_name (tem
, dir
);
495 dir
= Ffile_name_directory (name
);
502 Vcommand_line_args
= Qnil
;
504 for (i
= argc
- 1; i
>= 0; i
--)
506 if (i
== 0 || i
> skip_args
)
507 /* For the moment, we keep arguments as is in unibyte strings.
508 They are decoded in the function command-line after we know
509 locale-coding-system. */
511 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
515 unbind_to (count
, Qnil
);
518 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
519 doc
: /* Return the program name that was used to run Emacs.
520 Any directory names are omitted. */)
523 return Fcopy_sequence (Vinvocation_name
);
526 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
528 doc
: /* Return the directory name in which the Emacs executable was located. */)
531 return Fcopy_sequence (Vinvocation_directory
);
536 /* A valid but unlikely value for the TZ environment value.
537 It is OK (though a bit slower) if the user actually chooses this value. */
538 static char const dump_tz
[] = "UtC0";
541 #ifndef ORDINARY_LINK
542 /* We don't include crtbegin.o and crtend.o in the link,
543 so these functions and variables might be missed.
544 Provide dummy definitions to avoid error.
545 (We don't have any real constructors or destructors.) */
548 /* Define a dummy function F. Declare F too, to pacify gcc
549 -Wmissing-prototypes. */
550 #define DEFINE_DUMMY_FUNCTION(f) \
551 void f (void) ATTRIBUTE_CONST EXTERNALLY_VISIBLE; void f (void) {}
553 #ifndef GCC_CTORS_IN_LIBC
554 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
555 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
556 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
557 /* GNU/Linux has a bug in its library; avoid an error. */
559 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
561 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
562 #endif /* GCC_CTORS_IN_LIBC */
563 DEFINE_DUMMY_FUNCTION (__main
)
564 #endif /* __GNUC__ */
565 #endif /* ORDINARY_LINK */
567 /* Test whether the next argument in ARGV matches SSTR or a prefix of
568 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
569 (the argument is supposed to have a value) store in *VALPTR either
570 the next argument or the portion of this one after the equal sign.
571 ARGV is read starting at position *SKIPPTR; this index is advanced
572 by the number of arguments used.
574 Too bad we can't just use getopt for all of this, but we don't have
575 enough information to do it right. */
578 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
579 int minlen
, char **valptr
, int *skipptr
)
585 /* Don't access argv[argc]; give up in advance. */
586 if (argc
<= *skipptr
+ 1)
589 arg
= argv
[*skipptr
+1];
592 if (strcmp (arg
, sstr
) == 0)
596 *valptr
= argv
[*skipptr
+2];
603 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
604 ? p
- arg
: strlen (arg
));
605 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
607 else if (valptr
== NULL
)
618 else if (argv
[*skipptr
+2] != NULL
)
620 *valptr
= argv
[*skipptr
+2];
630 #ifdef DOUG_LEA_MALLOC
632 /* malloc can be invoked even before main (e.g. by the dynamic
633 linker), so the dumped malloc state must be restored as early as
634 possible using this special hook. */
637 malloc_initialize_hook (void)
641 if (!malloc_using_checking
)
642 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
643 ignored if the heap to be restored was constructed without
644 malloc checking. Can't use unsetenv, since that calls malloc. */
648 for (p
= environ
; p
&& *p
; p
++)
649 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
658 malloc_set_state (malloc_state_ptr
);
659 #ifndef XMALLOC_OVERRUN_CHECK
660 free (malloc_state_ptr
);
665 if (my_heap_start
== 0)
666 my_heap_start
= sbrk (0);
667 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
671 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
673 #endif /* DOUG_LEA_MALLOC */
675 /* Close standard output and standard error, reporting any write
676 errors as best we can. This is intended for use with atexit. */
678 close_output_streams (void)
680 if (close_stream (stdout
) != 0)
682 fprintf (stderr
, "Write error to standard output: %s\n",
685 _exit (EXIT_FAILURE
);
688 if (close_stream (stderr
) != 0)
689 _exit (EXIT_FAILURE
);
694 main (int argc
, char **argv
)
699 char stack_bottom_variable
;
700 bool do_initial_setlocale
;
703 #ifdef HAVE_SETRLIMIT
709 #ifdef DAEMON_MUST_EXEC
718 #ifdef G_SLICE_ALWAYS_MALLOC
719 /* This is used by the Cygwin build. */
720 xputenv ("G_SLICE=always-malloc");
726 extern char my_endbss
[];
727 extern char *my_endbss_static
;
729 if (my_heap_start
== 0)
730 my_heap_start
= sbrk (0);
732 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
736 #ifdef RUN_TIME_REMAP
738 run_time_remap (argv
[0]);
741 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
744 unexec_init_emacs_zone ();
747 atexit (close_output_streams
);
749 sort_args (argc
, argv
);
751 while (argv
[argc
]) argc
++;
753 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
755 const char *version
, *copyright
;
758 Lisp_Object tem
, tem2
;
759 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
760 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
763 fprintf (stderr
, "Invalid value of `emacs-version'\n");
768 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
773 version
= SSDATA (tem
);
774 copyright
= SSDATA (tem2
);
779 version
= emacs_version
;
780 copyright
= emacs_copyright
;
782 printf ("GNU Emacs %s\n", version
);
783 printf ("%s\n", copyright
);
784 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
785 printf ("You may redistribute copies of Emacs\n");
786 printf ("under the terms of the GNU General Public License.\n");
787 printf ("For more information about these matters, ");
788 printf ("see the file named COPYING.\n");
792 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
793 if (chdir (ch_to_dir
) == -1)
795 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
796 argv
[0], ch_to_dir
, strerror (errno
));
800 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
801 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
803 #ifdef HAVE_PERSONALITY_LINUX32
804 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
806 /* Set this so we only do this once. */
807 xputenv ("EMACS_HEAP_EXEC=true");
809 /* A flag to turn off address randomization which is introduced
810 in linux kernel shipped with fedora core 4 */
811 #define ADD_NO_RANDOMIZE 0x0040000
812 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
813 #undef ADD_NO_RANDOMIZE
815 execvp (argv
[0], argv
);
817 /* If the exec fails, try to dump anyway. */
820 #endif /* HAVE_PERSONALITY_LINUX32 */
822 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
823 /* Extend the stack space available.
824 Don't do that if dumping, since some systems (e.g. DJGPP)
825 might define a smaller stack limit at that time. */
828 && (!noninteractive
|| initialized
)
830 && !getrlimit (RLIMIT_STACK
, &rlim
))
833 extern size_t re_max_failures
;
834 /* Approximate the amount regex.c needs per unit of re_max_failures. */
835 int ratio
= 20 * sizeof (char *);
836 /* Then add 33% to cover the size of the smaller stacks that regex.c
837 successively allocates and discards, on its way to the maximum. */
839 /* Add in some extra to cover
840 what we're likely to use for other reasons. */
841 newlim
= re_max_failures
* ratio
+ 200000;
843 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
844 stack allocation routine for new process that the allocation
845 fails if stack limit is not on page boundary. So, round up the
846 new limit to page boundary. */
847 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
849 if (newlim
> rlim
.rlim_max
)
851 newlim
= rlim
.rlim_max
;
852 /* Don't let regex.c overflow the stack we have. */
853 re_max_failures
= (newlim
- 200000) / ratio
;
855 if (rlim
.rlim_cur
< newlim
)
856 rlim
.rlim_cur
= newlim
;
858 setrlimit (RLIMIT_STACK
, &rlim
);
860 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
862 /* Record (approximately) where the stack begins. */
863 stack_bottom
= &stack_bottom_variable
;
867 #ifndef SYSTEM_MALLOC
868 /* Arrange to get warning messages as memory fills up. */
869 memory_warnings (0, malloc_warning
);
871 /* Call malloc at least once, to run malloc_initialize_hook.
872 Also call realloc and free for consistency. */
873 free (realloc (malloc (4), 4));
875 #endif /* not SYSTEM_MALLOC */
877 #if defined (MSDOS) || defined (WINDOWSNT)
878 /* We do all file input/output as binary files. When we need to translate
879 newlines, we do that manually. */
881 #endif /* MSDOS || WINDOWSNT */
884 if (!isatty (fileno (stdin
)))
885 setmode (fileno (stdin
), O_BINARY
);
886 if (!isatty (fileno (stdout
)))
889 setmode (fileno (stdout
), O_BINARY
);
893 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
894 The build procedure uses this while dumping, to ensure that the
895 dumped Emacs does not have its system locale tables initialized,
896 as that might cause screwups when the dumped Emacs starts up. */
898 char *lc_all
= getenv ("LC_ALL");
899 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
902 /* Set locale now, so that initial error messages are localized properly.
903 fixup_locale must wait until later, since it builds strings. */
904 if (do_initial_setlocale
)
905 setlocale (LC_ALL
, "");
907 inhibit_window_system
= 0;
909 /* Handle the -t switch, which specifies filename to use as terminal. */
913 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
918 result
= emacs_open (term
, O_RDWR
, 0);
919 if (result
< 0 || dup (0) < 0)
921 char *errstring
= strerror (errno
);
922 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
927 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
930 fprintf (stderr
, "Using %s\n", term
);
931 #ifdef HAVE_WINDOW_SYSTEM
932 inhibit_window_system
= 1; /* -t => -nw */
939 /* Command line option --no-windows is deprecated and thus not mentioned
940 in the manual and usage information. */
941 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
942 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
943 inhibit_window_system
= 1;
945 /* Handle the -batch switch, which means don't do interactive display. */
947 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
950 Vundo_outer_limit
= Qnil
;
952 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
954 noninteractive
= 1; /* Set batch mode. */
955 /* Convert --script to -scriptload, un-skip it, and sort again
956 so that it will be handled in proper sequence. */
957 /* FIXME broken for --script=FILE - is that supposed to work? */
958 argv
[skip_args
- 1] = (char *) "-scriptload";
960 sort_args (argc
, argv
);
963 /* Handle the --help option, which gives a usage message. */
964 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
966 printf (USAGE1
, argv
[0], USAGE2
);
972 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
973 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
978 /* Start as a daemon: fork a new child process which will run the
979 rest of the initialization code, then exit.
981 Detaching a daemon requires the following steps:
985 - close the tty file-descriptors
987 We only want to do the last 2 steps once the daemon is ready to
988 serve requests, i.e. after loading .emacs (initialization).
989 OTOH initialization may start subprocesses (e.g. ispell) and these
990 should be run from the proper process (the one that will end up
991 running as daemon) and with the proper "session id" in order for
992 them to keep working after detaching, so fork and setsid need to be
993 performed before initialization.
995 We want to avoid exiting before the server socket is ready, so
996 use a pipe for synchronization. The parent waits for the child
997 to close its end of the pipe (using `daemon-initialized')
999 if (pipe (daemon_pipe
) == -1)
1001 fprintf (stderr
, "Cannot pipe!\n");
1005 #ifndef DAEMON_MUST_EXEC
1007 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1008 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1009 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1010 #endif /* USE_GTK */
1012 #else /* DAEMON_MUST_EXEC */
1013 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1014 f
= fork (); /* in orig */
1016 f
= 0; /* in exec'd */
1017 #endif /* !DAEMON_MUST_EXEC */
1023 /* Close unused writing end of the pipe. */
1024 close (daemon_pipe
[1]);
1026 /* Just wait for the child to close its end of the pipe. */
1029 retval
= read (daemon_pipe
[0], &buf
, 1);
1031 while (retval
== -1 && errno
== EINTR
);
1035 fprintf (stderr
, "Error reading status from child\n");
1038 else if (retval
== 0)
1040 fprintf (stderr
, "Error: server did not start correctly\n");
1044 close (daemon_pipe
[0]);
1049 fprintf (stderr
, "Cannot fork!\n");
1053 #ifdef DAEMON_MUST_EXEC
1055 /* In orig process, forked as child, OR in exec'd. */
1056 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1057 { /* In orig, child: now exec w/special daemon name. */
1060 snprintf (fdStr
, sizeof fdStr
,
1061 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1062 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1064 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1066 fprintf (stderr
, "daemon: child name too long\n");
1070 argv
[skip_args
] = fdStr
;
1072 execv (argv
[0], argv
);
1073 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1077 /* In exec'd: parse special dname into pipe and name info. */
1078 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1079 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1081 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1084 dname_arg2
[0] = '\0';
1085 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1087 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1089 #endif /* DAEMON_MUST_EXEC */
1092 daemon_name
= xstrdup (dname_arg
);
1093 /* Close unused reading end of the pipe. */
1094 close (daemon_pipe
[0]);
1095 /* Make sure that the used end of the pipe is closed on exec, so
1096 that it is not accessible to programs started from .emacs. */
1097 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1101 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1106 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1107 if (! noninteractive
)
1109 extern void malloc_enable_thread (void);
1111 malloc_enable_thread ();
1115 init_signals (dumping
);
1117 noninteractive1
= noninteractive
;
1119 /* Perform basic initializations (not merely interning symbols). */
1126 init_charset_once ();
1127 init_coding_once ();
1128 init_syntax_once (); /* Create standard syntax table. */
1129 init_category_once (); /* Create standard category table. */
1130 /* Must be done before init_buffer. */
1131 init_casetab_once ();
1132 init_buffer_once (); /* Create buffer table and some buffers. */
1133 init_minibuf_once (); /* Create list of minibuffers. */
1134 /* Must precede init_window_once. */
1136 /* Call syms_of_xfaces before init_window_once because that
1137 function creates Vterminal_frame. Termcap frames now use
1138 faces, and the face implementation uses some symbols as
1141 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1142 be better to arrange things not to have this dependency. */
1144 /* Call syms_of_keyboard before init_window_once because
1145 keyboard sets up symbols that include some face names that
1146 the X support will want to use. This can happen when
1147 CANNOT_DUMP is defined. */
1148 syms_of_keyboard ();
1150 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1152 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1154 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1156 /* Before syms_of_coding because it initializes Qcharsetp. */
1158 /* Before init_window_once, because it sets up the
1159 Vcoding_system_hash_table. */
1160 syms_of_coding (); /* This should be after syms_of_fileio. */
1162 init_window_once (); /* Init the window system. */
1163 #ifdef HAVE_WINDOW_SYSTEM
1164 init_fringe_once (); /* Swap bitmaps if necessary. */
1165 #endif /* HAVE_WINDOW_SYSTEM */
1170 if (do_initial_setlocale
)
1173 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1174 Vsystem_time_locale
= Vprevious_system_time_locale
;
1179 running_asynch_code
= 0;
1183 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1186 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1189 ns_pool
= ns_alloc_autorelease_pool ();
1190 if (!noninteractive
)
1192 #ifdef NS_IMPL_COCOA
1193 if (skip_args
< argc
)
1195 /* FIXME: Do the right thing if getenv returns NULL, or if
1197 if (!strncmp (argv
[skip_args
], "-psn", 4))
1200 chdir (getenv ("HOME"));
1202 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1205 chdir (getenv ("HOME"));
1210 #endif /* HAVE_NS */
1212 #ifdef HAVE_X_WINDOWS
1213 /* Stupid kludge to catch command-line display spec. We can't
1214 handle this argument entirely in window system dependent code
1215 because we don't even know which window system dependent code
1216 to run until we've recognized this argument. */
1218 char *displayname
= 0;
1219 int count_before
= skip_args
;
1221 /* Skip any number of -d options, but only use the last one. */
1224 int count_before_this
= skip_args
;
1226 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1228 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1233 count_before
= count_before_this
;
1236 /* If we have the form --display=NAME,
1237 convert it into -d name.
1238 This requires inserting a new element into argv. */
1239 if (displayname
&& count_before
< skip_args
)
1241 if (skip_args
== count_before
+ 1)
1243 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1244 (argc
- (count_before
+ 2)) * sizeof *argv
);
1245 argv
[count_before
+ 2] = displayname
;
1248 argv
[count_before
+ 1] = (char *) "-d";
1253 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1254 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1258 /* Don't actually discard this arg. */
1259 skip_args
= count_before
;
1261 #else /* !HAVE_X_WINDOWS */
1264 int count_before
= skip_args
;
1266 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1267 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1270 skip_args
= count_before
;
1274 /* argmatch must not be used after here,
1275 except when building temacs
1276 because the -d argument has not been skipped in skip_args. */
1279 /* Call early 'cause init_environment needs it. */
1281 /* Set defaults for several environment variables. */
1283 init_environment (argc
, argv
, skip_args
);
1290 globals_of_w32notify ();
1291 /* Initialize environment from registry settings. */
1292 init_environment (argv
);
1293 init_ntproc (dumping
); /* must precede init_editfns. */
1296 /* Initialize and GC-protect Vinitial_environment and
1297 Vprocess_environment before set_initial_environment fills them
1300 syms_of_callproc ();
1301 /* egetenv is a pretty low-level facility, which may get called in
1302 many circumstances; it seems flimsy to put off initializing it
1303 until calling init_callproc. Do not do it when dumping. */
1305 set_initial_environment ();
1307 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1308 if this is not done. Do it after set_global_environment so that we
1309 don't pollute Vglobal_environment. */
1310 /* Setting LANG here will defeat the startup locale processing... */
1315 init_buffer (); /* Init default directory of main buffer. */
1317 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1318 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1322 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1323 Lisp_Object old_log_max
;
1324 old_log_max
= Vmessage_log_max
;
1325 XSETFASTINT (Vmessage_log_max
, 0);
1326 message_dolog ("", 0, 1, 0);
1327 Vmessage_log_max
= old_log_max
;
1330 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1333 /* Check to see if Emacs has been installed correctly. */
1334 check_windows_init_file ();
1337 /* Intern the names of all standard functions and variables;
1338 define standard keys. */
1342 /* The basic levels of Lisp must come first. Note that
1343 syms_of_data and some others have already been called. */
1348 syms_of_floatfns ();
1351 syms_of_bytecode ();
1353 syms_of_casefiddle ();
1355 syms_of_category ();
1357 syms_of_character ();
1364 syms_of_filelock ();
1367 /* syms_of_keymap (); */
1375 syms_of_terminal ();
1381 syms_of_textprop ();
1382 syms_of_composite ();
1385 #endif /* WINDOWSNT */
1386 #if defined CYGWIN && defined HAVE_NTGUI
1392 #ifdef HAVE_WINDOW_SYSTEM
1395 #endif /* HAVE_WINDOW_SYSTEM */
1396 #ifdef HAVE_X_WINDOWS
1401 syms_of_xsettings ();
1408 #endif /* HAVE_X_WINDOWS */
1421 #endif /* HAVE_NTGUI */
1423 #if defined WINDOWSNT || defined HAVE_NTGUI
1424 syms_of_w32select ();
1431 syms_of_win16select ();
1438 syms_of_nsselect ();
1440 #endif /* HAVE_NS */
1448 #endif /* HAVE_INOTIFY */
1451 syms_of_dbusbind ();
1452 #endif /* HAVE_DBUS */
1456 syms_of_w32notify ();
1457 #endif /* WINDOWSNT */
1459 syms_of_profiler ();
1461 keys_of_casefiddle ();
1464 keys_of_keyboard ();
1470 /* Initialization that must be done even if the global variable
1471 initialized is non zero. */
1473 globals_of_w32font ();
1474 globals_of_w32fns ();
1475 globals_of_w32menu ();
1476 #endif /* HAVE_NTGUI */
1478 #if defined WINDOWSNT || defined HAVE_NTGUI
1479 globals_of_w32select ();
1485 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1486 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1487 init_keyboard (); /* This too must precede init_sys_modes. */
1488 if (!noninteractive
)
1489 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1491 #ifdef HAVE_WINDOW_SYSTEM
1493 #endif /* HAVE_WINDOW_SYSTEM */
1501 /* Handle -l loadup, args passed by Makefile. */
1502 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1503 Vtop_level
= Fcons (intern_c_string ("load"),
1504 Fcons (build_string (file
), Qnil
));
1505 /* Unless next switch is -nl, load "loadup.el" first thing. */
1507 Vtop_level
= Fcons (intern_c_string ("load"),
1508 Fcons (build_string ("loadup.el"), Qnil
));
1515 /* If the execution TZ happens to be the same as the dump TZ,
1516 change it to some other value and then change it back,
1517 to force the underlying implementation to reload the TZ info.
1518 This is needed on implementations that load TZ info from files,
1519 since the TZ file contents may differ between dump and execution. */
1520 char *tz
= getenv ("TZ");
1521 if (tz
&& !strcmp (tz
, dump_tz
))
1531 /* Set up for profiling. This is known to work on FreeBSD,
1532 GNU/Linux and MinGW. It might work on some other systems too.
1533 Give it a try and tell us if it works on your system. To compile
1534 for profiling, use the configure option --enable-profiling. */
1535 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1540 extern unsigned char etext
asm ("etext");
1546 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1555 #ifdef LOCALTIME_CACHE
1556 /* Some versions of localtime have a bug. They cache the value of the time
1557 zone rather than looking it up every time. Since localtime() is
1558 called to bolt the undumping time into the undumped emacs, this
1559 results in localtime ignoring the TZ environment variable.
1560 This flushes the new TZ value into localtime. */
1562 #endif /* defined (LOCALTIME_CACHE) */
1564 /* Enter editor command loop. This never returns. */
1570 /* Sort the args so we can find the most important ones
1571 at the beginning of argv. */
1573 /* First, here's a table of all the standard options. */
1575 struct standard_args
1578 const char *longname
;
1583 static const struct standard_args standard_args
[] =
1585 { "-version", "--version", 150, 0 },
1586 { "-chdir", "--chdir", 130, 1 },
1587 { "-t", "--terminal", 120, 1 },
1588 { "-nw", "--no-window-system", 110, 0 },
1589 { "-nw", "--no-windows", 110, 0 },
1590 { "-batch", "--batch", 100, 0 },
1591 { "-script", "--script", 100, 1 },
1592 { "-daemon", "--daemon", 99, 0 },
1593 { "-help", "--help", 90, 0 },
1594 { "-nl", "--no-loadup", 70, 0 },
1595 { "-nsl", "--no-site-lisp", 65, 0 },
1596 /* -d must come last before the options handled in startup.el. */
1597 { "-d", "--display", 60, 1 },
1598 { "-display", 0, 60, 1 },
1599 /* Now for the options handled in `command-line' (startup.el). */
1600 /* (Note that to imply -nsl, -Q is partially handled here.) */
1601 { "-Q", "--quick", 55, 0 },
1602 { "-quick", 0, 55, 0 },
1603 { "-q", "--no-init-file", 50, 0 },
1604 { "-no-init-file", 0, 50, 0 },
1605 { "-no-site-file", "--no-site-file", 40, 0 },
1606 { "-u", "--user", 30, 1 },
1607 { "-user", 0, 30, 1 },
1608 { "-debug-init", "--debug-init", 20, 0 },
1609 { "-iconic", "--iconic", 15, 0 },
1610 { "-D", "--basic-display", 12, 0},
1611 { "-basic-display", 0, 12, 0},
1612 { "-nbc", "--no-blinking-cursor", 12, 0 },
1613 /* Now for the options handled in `command-line-1' (startup.el). */
1614 { "-nbi", "--no-bitmap-icon", 10, 0 },
1615 { "-bg", "--background-color", 10, 1 },
1616 { "-background", 0, 10, 1 },
1617 { "-fg", "--foreground-color", 10, 1 },
1618 { "-foreground", 0, 10, 1 },
1619 { "-bd", "--border-color", 10, 1 },
1620 { "-bw", "--border-width", 10, 1 },
1621 { "-ib", "--internal-border", 10, 1 },
1622 { "-ms", "--mouse-color", 10, 1 },
1623 { "-cr", "--cursor-color", 10, 1 },
1624 { "-fn", "--font", 10, 1 },
1625 { "-font", 0, 10, 1 },
1626 { "-fs", "--fullscreen", 10, 0 },
1627 { "-fw", "--fullwidth", 10, 0 },
1628 { "-fh", "--fullheight", 10, 0 },
1629 { "-mm", "--maximized", 10, 0 },
1630 { "-g", "--geometry", 10, 1 },
1631 { "-geometry", 0, 10, 1 },
1632 { "-T", "--title", 10, 1 },
1633 { "-title", 0, 10, 1 },
1634 { "-name", "--name", 10, 1 },
1635 { "-xrm", "--xrm", 10, 1 },
1636 { "-parent-id", "--parent-id", 10, 1 },
1637 { "-r", "--reverse-video", 5, 0 },
1639 { "-reverse", 0, 5, 0 },
1640 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1641 { "-vb", "--vertical-scroll-bars", 5, 0 },
1642 { "-color", "--color", 5, 0},
1643 { "-no-splash", "--no-splash", 3, 0 },
1644 { "-no-desktop", "--no-desktop", 3, 0 },
1646 { "-NSAutoLaunch", 0, 5, 1 },
1647 { "-NXAutoLaunch", 0, 5, 1 },
1648 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1649 { "-_NSMachLaunch", 0, 85, 1 },
1650 { "-MachLaunch", 0, 85, 1 },
1651 { "-macosx", 0, 85, 0 },
1652 { "-NSHost", 0, 85, 1 },
1654 /* These have the same priority as ordinary file name args,
1655 so they are not reordered with respect to those. */
1656 { "-L", "--directory", 0, 1 },
1657 { "-directory", 0, 0, 1 },
1658 { "-l", "--load", 0, 1 },
1659 { "-load", 0, 0, 1 },
1660 /* This has no longname, because using --scriptload confuses sort_args,
1661 because then the --script long option seems to match twice; ie
1662 you can't have a long option which is a prefix of another long
1663 option. In any case, this is entirely an internal option. */
1664 { "-scriptload", NULL
, 0, 1 },
1665 { "-f", "--funcall", 0, 1 },
1666 { "-funcall", 0, 0, 1 },
1667 { "-eval", "--eval", 0, 1 },
1668 { "-execute", "--execute", 0, 1 },
1669 { "-find-file", "--find-file", 0, 1 },
1670 { "-visit", "--visit", 0, 1 },
1671 { "-file", "--file", 0, 1 },
1672 { "-insert", "--insert", 0, 1 },
1674 { "-NXOpen", 0, 0, 1 },
1675 { "-NXOpenTemp", 0, 0, 1 },
1676 { "-NSOpen", 0, 0, 1 },
1677 { "-NSOpenTemp", 0, 0, 1 },
1678 { "-GSFilePath", 0, 0, 1 },
1680 /* This should be processed after ordinary file name args and the like. */
1681 { "-kill", "--kill", -10, 0 },
1684 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1685 so that the highest priority ones come first.
1686 Do not change the order of elements of equal priority.
1687 If an option takes an argument, keep it and its argument together.
1689 If an option that takes no argument appears more
1690 than once, eliminate all but one copy of it. */
1693 sort_args (int argc
, char **argv
)
1695 char **new = xmalloc (argc
* sizeof *new);
1696 /* For each element of argv,
1697 the corresponding element of options is:
1698 0 for an option that takes no arguments,
1699 1 for an option that takes one argument, etc.
1700 -1 for an ordinary non-option argument. */
1701 int *options
= xnmalloc (argc
, sizeof *options
);
1702 int *priority
= xnmalloc (argc
, sizeof *priority
);
1704 int incoming_used
= 1;
1708 /* Categorize all the options,
1709 and figure out which argv elts are option arguments. */
1710 for (from
= 1; from
< argc
; from
++)
1714 if (argv
[from
][0] == '-')
1718 /* If we have found "--", don't consider
1719 any more arguments as options. */
1720 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1722 /* Leave the "--", and everything following it, at the end. */
1723 for (; from
< argc
; from
++)
1725 priority
[from
] = -100;
1731 /* Look for a match with a known old-fashioned option. */
1732 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1733 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1735 options
[from
] = standard_args
[i
].nargs
;
1736 priority
[from
] = standard_args
[i
].priority
;
1737 if (from
+ standard_args
[i
].nargs
>= argc
)
1738 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1739 from
+= standard_args
[i
].nargs
;
1743 /* Look for a match with a known long option.
1744 MATCH is -1 if no match so far, -2 if two or more matches so far,
1745 >= 0 (the table index of the match) if just one match so far. */
1746 if (argv
[from
][1] == '-')
1748 char const *equals
= strchr (argv
[from
], '=');
1750 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1755 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1756 if (standard_args
[i
].longname
1757 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1766 /* If we found exactly one match, use that. */
1769 options
[from
] = standard_args
[match
].nargs
;
1770 priority
[from
] = standard_args
[match
].priority
;
1771 /* If --OPTION=VALUE syntax is used,
1772 this option uses just one argv element. */
1775 if (from
+ options
[from
] >= argc
)
1776 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1777 from
+= options
[from
];
1779 /* FIXME When match < 0, shouldn't there be some error,
1780 or at least indication to the user that there was a
1787 /* Copy the arguments, in order of decreasing priority, to NEW. */
1789 while (incoming_used
< argc
)
1792 int best_priority
= -9999;
1794 /* Find the highest priority remaining option.
1795 If several have equal priority, take the first of them. */
1796 for (from
= 1; from
< argc
; from
++)
1798 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1800 best_priority
= priority
[from
];
1803 /* Skip option arguments--they are tied to the options. */
1804 if (options
[from
] > 0)
1805 from
+= options
[from
];
1811 /* Copy the highest priority remaining option, with its args, to NEW.
1812 Unless it is a duplicate of the previous one. */
1813 if (! (options
[best
] == 0
1814 && ! strcmp (new[to
- 1], argv
[best
])))
1816 new[to
++] = argv
[best
];
1817 for (i
= 0; i
< options
[best
]; i
++)
1818 new[to
++] = argv
[best
+ i
+ 1];
1821 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1823 /* Clear out this option in ARGV. */
1825 for (i
= 0; i
< options
[best
]; i
++)
1826 argv
[best
+ i
+ 1] = 0;
1829 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1833 memcpy (argv
, new, sizeof (char *) * argc
);
1840 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1841 doc
: /* Exit the Emacs job and kill it.
1842 If ARG is an integer, return ARG as the exit program code.
1843 If ARG is a string, stuff it as keyboard input.
1845 This function is called upon receipt of the signals SIGTERM
1846 or SIGHUP, and upon SIGINT in batch mode.
1848 The value of `kill-emacs-hook', if not void,
1849 is a list of functions (of no args),
1850 all of which are called before Emacs is actually killed. */)
1853 struct gcpro gcpro1
;
1862 hook
= intern ("kill-emacs-hook");
1863 Frun_hooks (1, &hook
);
1867 #ifdef HAVE_X_WINDOWS
1868 /* Transfer any clipboards we own to the clipboard manager. */
1869 x_clipboard_manager_save_all ();
1872 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1875 ns_release_autorelease_pool (ns_pool
);
1878 /* If we have an auto-save list file,
1879 kill it because we are exiting Emacs deliberately (not crashing).
1880 Do it after shut_down_emacs, which does an auto-save. */
1881 if (STRINGP (Vauto_save_list_file_name
))
1882 unlink (SSDATA (Vauto_save_list_file_name
));
1885 exit_code
= (XINT (arg
) < 0
1886 ? XINT (arg
) | INT_MIN
1887 : XINT (arg
) & INT_MAX
);
1889 exit_code
= EXIT_SUCCESS
;
1894 /* Perform an orderly shutdown of Emacs. Autosave any modified
1895 buffers, kill any child processes, clean up the terminal modes (if
1896 we're in the foreground), and other stuff like that. Don't perform
1897 any redisplay; this may be called when Emacs is shutting down in
1898 the background, or after its X connection has died.
1900 If SIG is a signal number, print a message for it.
1902 This is called by fatal signal handlers, X protocol error handlers,
1906 shut_down_emacs (int sig
, Lisp_Object stuff
)
1908 /* Prevent running of hooks from now on. */
1911 /* Don't update display from now on. */
1912 Vinhibit_redisplay
= Qt
;
1914 /* If we are controlling the terminal, reset terminal modes. */
1917 pid_t pgrp
= getpgrp ();
1918 pid_t tpgrp
= tcgetpgrp (0);
1919 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1921 reset_all_sys_modes ();
1922 if (sig
&& sig
!= SIGTERM
)
1924 static char const format
[] = "Fatal error %d: ";
1925 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1926 int buflen
= sprintf (buf
, format
, sig
);
1927 char const *sig_desc
= safe_strsignal (sig
);
1928 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1929 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1935 reset_all_sys_modes ();
1938 stuff_buffered_input (stuff
);
1940 inhibit_sentinels
= 1;
1941 kill_buffer_processes (Qnil
);
1942 Fdo_auto_save (Qt
, Qnil
);
1944 #ifdef CLASH_DETECTION
1945 unlock_all_files ();
1948 /* There is a tendency for a SIGIO signal to arrive within exit,
1949 and cause a SIGHUP because the input descriptor is already closed. */
1953 /* Do this only if terminating normally, we want glyph matrices
1954 etc. in a core dump. */
1955 if (sig
== 0 || sig
== SIGTERM
)
1957 check_glyph_memory ();
1958 check_message_stack ();
1966 ns_term_shutdown (sig
);
1970 xml_cleanup_parser ();
1984 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1985 doc
: /* Dump current state of Emacs into executable file FILENAME.
1986 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1987 This is used in the file `loadup.el' when building Emacs.
1989 You must run Emacs in batch mode in order to dump it. */)
1990 (Lisp_Object filename
, Lisp_Object symfile
)
1994 ptrdiff_t count
= SPECPDL_INDEX ();
1998 if (! noninteractive
)
1999 error ("Dumping Emacs works only in batch mode");
2003 /* Warn if the gap between BSS end and heap start is larger than this. */
2004 # define MAX_HEAP_BSS_DIFF (1024*1024)
2006 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2008 fprintf (stderr
, "**************************************************\n");
2009 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2010 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2012 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2013 fprintf (stderr
, "fail because of this. See the section about\n");
2014 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2015 fprintf (stderr
, "**************************************************\n");
2017 #endif /* GNU_LINUX */
2019 /* Bind `command-line-processed' to nil before dumping,
2020 so that the dumped Emacs will process its command line
2021 and set up to work with X windows if appropriate. */
2022 symbol
= intern ("command-line-processed");
2023 specbind (symbol
, Qnil
);
2025 CHECK_STRING (filename
);
2026 filename
= Fexpand_file_name (filename
, Qnil
);
2027 if (!NILP (symfile
))
2029 CHECK_STRING (symfile
);
2030 if (SCHARS (symfile
))
2031 symfile
= Fexpand_file_name (symfile
, Qnil
);
2035 Vpurify_flag
= Qnil
;
2038 set_time_zone_rule (dump_tz
);
2039 #ifndef LOCALTIME_CACHE
2040 /* Force a tz reload, since set_time_zone_rule doesn't. */
2046 /* Tell malloc where start of impure now is. */
2047 /* Also arrange for warnings when nearly out of space. */
2048 #ifndef SYSTEM_MALLOC
2050 /* On Windows, this was done before dumping, and that once suffices.
2051 Meanwhile, my_edata is not valid on Windows. */
2053 extern char my_edata
[];
2054 memory_warnings (my_edata
, malloc_warning
);
2056 #endif /* not WINDOWSNT */
2057 #endif /* not SYSTEM_MALLOC */
2058 #ifdef DOUG_LEA_MALLOC
2059 malloc_state_ptr
= malloc_get_state ();
2062 #ifdef USE_MMAP_FOR_BUFFERS
2065 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2066 #ifdef USE_MMAP_FOR_BUFFERS
2069 #ifdef DOUG_LEA_MALLOC
2070 free (malloc_state_ptr
);
2074 Vlibrary_cache
= Qnil
;
2076 #ifdef HAVE_WINDOW_SYSTEM
2077 reset_image_types ();
2082 return unbind_to (count
, Qnil
);
2085 #endif /* not CANNOT_DUMP */
2088 /* Recover from setlocale (LC_ALL, ""). */
2092 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2093 so that numbers are read and printed properly for Emacs Lisp. */
2094 setlocale (LC_NUMERIC
, "C");
2097 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2100 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2102 if (! EQ (*plocale
, desired_locale
))
2104 *plocale
= desired_locale
;
2105 setlocale (category
, (STRINGP (desired_locale
)
2106 ? SSDATA (desired_locale
)
2111 /* Set system time locale to match Vsystem_time_locale, if possible. */
2113 synchronize_system_time_locale (void)
2115 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2116 Vsystem_time_locale
);
2119 /* Set system messages locale to match Vsystem_messages_locale, if
2122 synchronize_system_messages_locale (void)
2125 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2126 Vsystem_messages_locale
);
2129 #endif /* HAVE_SETLOCALE */
2133 decode_env_path (const char *evarname
, const char *defalt
)
2135 const char *path
, *p
;
2136 Lisp_Object lpath
, element
, tem
;
2139 const char *emacs_dir
= egetenv ("emacs_dir");
2140 static const char *emacs_dir_env
= "%emacs_dir%/";
2141 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2144 /* It's okay to use getenv here, because this function is only used
2145 to initialize variables when Emacs starts up, and isn't called
2148 path
= getenv (evarname
);
2159 /* Ensure values from the environment use the proper directory separator. */
2162 char *path_copy
= alloca (strlen (path
) + 1);
2163 strcpy (path_copy
, path
);
2164 dostounix_filename (path_copy
);
2171 p
= strchr (path
, SEPCHAR
);
2173 p
= path
+ strlen (path
);
2174 element
= (p
- path
? make_string (path
, p
- path
)
2175 : build_string ("."));
2177 /* Relative file names in the default path are interpreted as
2178 being relative to $emacs_dir. */
2179 if (emacs_dir
&& defaulted
2180 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2181 element
= Fexpand_file_name (Fsubstring (element
,
2182 make_number (emacs_dir_len
),
2184 build_string (emacs_dir
));
2187 /* Add /: to the front of the name
2188 if it would otherwise be treated as magic. */
2189 tem
= Ffind_file_name_handler (element
, Qt
);
2191 /* However, if the handler says "I'm safe",
2192 don't bother adding /:. */
2196 prop
= Fget (tem
, intern ("safe-magic"));
2202 element
= concat2 (build_string ("/:"), element
);
2204 lpath
= Fcons (element
, lpath
);
2210 return Fnreverse (lpath
);
2213 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2214 doc
: /* Return non-nil if the current emacs process is a daemon.
2215 If the daemon was given a name argument, return that name. */)
2220 return build_string (daemon_name
);
2227 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2228 doc
: /* Mark the Emacs daemon as being initialized.
2229 This finishes the daemonization process by doing the other half of detaching
2230 from the parent process and its tty file descriptors. */)
2237 error ("This function can only be called if emacs is run as a daemon");
2239 if (daemon_pipe
[1] < 0)
2240 error ("The daemon has already been initialized");
2242 if (NILP (Vafter_init_time
))
2243 error ("This function can only be called after loading the init files");
2245 /* Get rid of stdin, stdout and stderr. */
2246 nfd
= open ("/dev/null", O_RDWR
);
2248 err
|= dup2 (nfd
, 0) < 0;
2249 err
|= dup2 (nfd
, 1) < 0;
2250 err
|= dup2 (nfd
, 2) < 0;
2251 err
|= close (nfd
) != 0;
2253 /* Closing the pipe will notify the parent that it can exit.
2254 FIXME: In case some other process inherited the pipe, closing it here
2255 won't notify the parent because it's still open elsewhere, so we
2256 additionally send a byte, just to make sure the parent really exits.
2257 Instead, we should probably close the pipe in start-process and
2258 call-process to make sure the pipe is never inherited by
2260 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2261 err
|= close (daemon_pipe
[1]) != 0;
2262 /* Set it to an invalid value so we know we've already run this function. */
2263 daemon_pipe
[1] = -1;
2266 error ("I/O error during daemon initialization");
2271 syms_of_emacs (void)
2273 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2274 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2275 DEFSYM (Qkill_emacs
, "kill-emacs");
2278 defsubr (&Sdump_emacs
);
2281 defsubr (&Skill_emacs
);
2283 defsubr (&Sinvocation_name
);
2284 defsubr (&Sinvocation_directory
);
2285 defsubr (&Sdaemonp
);
2286 defsubr (&Sdaemon_initialized
);
2288 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2289 doc
: /* Args passed by shell to Emacs, as a list of strings.
2290 Many arguments are deleted from the list as they are processed. */);
2292 DEFVAR_LISP ("system-type", Vsystem_type
,
2293 doc
: /* The value is a symbol indicating the type of operating system you are using.
2295 `gnu' compiled for a GNU Hurd system.
2296 `gnu/linux' compiled for a GNU/Linux system.
2297 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2298 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2299 `ms-dos' compiled as an MS-DOS application.
2300 `windows-nt' compiled as a native W32 application.
2301 `cygwin' compiled using the Cygwin library.
2302 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2303 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2304 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2305 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2307 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2308 doc
: /* Value is string indicating configuration Emacs was built for.
2309 On MS-Windows, the value reflects the OS flavor and version on which
2310 Emacs is running. */);
2311 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2313 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2314 doc
: /* String containing the configuration options Emacs was built with. */);
2315 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2317 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2318 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2320 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2321 doc
: /* Hook run when `kill-emacs' is called.
2322 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2323 in other similar situations), functions placed on this hook should not
2324 expect to be able to interact with the user. To ask for confirmation,
2325 see `kill-emacs-query-functions' instead.
2327 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2328 `noninteractive' was non-nil. */);
2329 Vkill_emacs_hook
= Qnil
;
2331 DEFVAR_LISP ("path-separator", Vpath_separator
,
2332 doc
: /* String containing the character that separates directories in
2333 search paths, such as PATH and other similar environment variables. */);
2336 Vpath_separator
= make_string (&c
, 1);
2339 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2340 doc
: /* The program name that was used to run Emacs.
2341 Any directory names are omitted. */);
2343 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2344 doc
: /* The directory in which the Emacs executable was found, to run it.
2345 The value is nil if that directory's name is not known. */);
2347 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2348 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2349 In an installed Emacs, this is normally nil. It is non-nil if
2350 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2351 within the variable `invocation-directory' or its parent. For example,
2352 this is the case when running an uninstalled Emacs executable from its
2353 build directory. */);
2354 Vinstallation_directory
= Qnil
;
2356 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2357 doc
: /* System locale for messages. */);
2358 Vsystem_messages_locale
= Qnil
;
2360 DEFVAR_LISP ("previous-system-messages-locale",
2361 Vprevious_system_messages_locale
,
2362 doc
: /* Most recently used system locale for messages. */);
2363 Vprevious_system_messages_locale
= Qnil
;
2365 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2366 doc
: /* System locale for time. */);
2367 Vsystem_time_locale
= Qnil
;
2369 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2370 doc
: /* Most recently used system locale for time. */);
2371 Vprevious_system_time_locale
= Qnil
;
2373 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2374 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2375 Vbefore_init_time
= Qnil
;
2377 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2378 doc
: /* Value of `current-time' after loading the init files.
2379 This is nil during initialization. */);
2380 Vafter_init_time
= Qnil
;
2382 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2383 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2384 inhibit_x_resources
= 0;
2386 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2387 doc
: /* Short copyright string for this version of Emacs. */);
2388 Vemacs_copyright
= build_string (emacs_copyright
);
2390 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2391 doc
: /* Version numbers of this version of Emacs. */);
2392 Vemacs_version
= build_string (emacs_version
);
2394 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2395 doc
: /* Alist of dynamic libraries vs external files implementing them.
2396 Each element is a list (LIBRARY FILE...), where the car is a symbol
2397 representing a supported external library, and the rest are strings giving
2398 alternate filenames for that library.
2400 Emacs tries to load the library from the files in the order they appear on
2401 the list; if none is loaded, the running session of Emacs won't have access
2404 Note that image types `pbm' and `xbm' do not need entries in this variable
2405 because they do not depend on external libraries and are always available.
2407 Also note that this is not a generic facility for accessing external
2408 libraries; only those already known by Emacs will be loaded. */);
2409 Vdynamic_library_alist
= Qnil
;
2410 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2413 Vlibrary_cache
= Qnil
;
2414 staticpro (&Vlibrary_cache
);
2417 /* Make sure IS_DAEMON starts up as false. */