1 /* Fully extensible Emacs, running on Unix, intended for GNU.
3 Copyright (C) 1985-1987, 1993-1995, 1997-1999, 2001-2013 Free Software
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"
44 #include "w32common.h"
47 #if defined HAVE_NTGUI && defined CYGWIN
51 #ifdef HAVE_WINDOW_SYSTEM
53 #endif /* HAVE_WINDOW_SYSTEM */
55 #ifdef NS_IMPL_GNUSTEP
56 /* At least under Debian, GSConfig is in a subdirectory. --Stef */
57 #include <GNUstepBase/GSConfig.h>
61 #include "intervals.h"
62 #include "character.h"
68 #include "blockinput.h"
69 #include "syssignal.h"
72 #include "termhooks.h"
80 #if (defined PROFILING \
81 && (defined __FreeBSD__ || defined GNU_LINUX || defined __MINGW32__))
82 # include <sys/gmon.h>
83 extern void moncontrol (int mode
);
92 #include <sys/resource.h>
95 #ifdef HAVE_PERSONALITY_LINUX32
96 #include <sys/personality.h>
99 static const char emacs_version
[] = VERSION
;
100 static const char emacs_copyright
[] = COPYRIGHT
;
102 /* Empty lisp strings. To avoid having to build any others. */
103 Lisp_Object empty_unibyte_string
, empty_multibyte_string
;
106 /* Cache for externally loaded libraries. */
107 Lisp_Object Vlibrary_cache
;
110 /* Set after Emacs has started up the first time.
111 Prevents reinitialization of the Lisp world and keymaps
112 on subsequent starts. */
116 extern void unexec_init_emacs_zone (void);
119 #ifdef DOUG_LEA_MALLOC
120 /* Preserves a pointer to the memory allocated that copies that
121 static data inside glibc's malloc. */
122 static void *malloc_state_ptr
;
123 /* From glibc, a routine that returns a copy of the malloc internal state. */
124 extern void *malloc_get_state (void);
125 /* From glibc, a routine that overwrites the malloc internal state. */
126 extern int malloc_set_state (void*);
127 /* True if the MALLOC_CHECK_ environment variable was set while
128 dumping. Used to work around a bug in glibc's malloc. */
129 static bool malloc_using_checking
;
132 Lisp_Object Qfile_name_handler_alist
;
134 Lisp_Object Qrisky_local_variable
;
136 Lisp_Object Qkill_emacs
;
138 /* If true, Emacs should not attempt to use a window-specific code,
139 but instead should use the virtual terminal under which it was started. */
140 bool inhibit_window_system
;
142 /* If true, a filter or a sentinel is running. Tested to save the match
143 data on the first attempt to change it inside asynchronous code. */
144 bool running_asynch_code
;
146 #if defined (HAVE_X_WINDOWS) || defined (HAVE_NS)
147 /* If true, -d was specified, meaning we're using some window system. */
151 /* An address near the bottom of the stack.
152 Tells GC how to save a copy of the stack. */
155 #if defined (DOUG_LEA_MALLOC) || defined (GNU_LINUX)
156 /* The address where the heap starts (from the first sbrk (0) call). */
157 static void *my_heap_start
;
161 /* The gap between BSS end and heap start as far as we can tell. */
162 static uprintmax_t heap_bss_diff
;
165 /* To run as a daemon under Cocoa or Windows, we must do a fork+exec,
168 On Cocoa, CoreFoundation lib fails in forked process:
169 http://developer.apple.com/ReleaseNotes/
170 CoreFoundation/CoreFoundation.html)
172 On Windows, a Cygwin fork child cannot access the USER subsystem.
174 We mark being in the exec'd process by a daemon name argument of
175 form "--daemon=\nFD0,FD1\nNAME" where FD are the pipe file descriptors,
176 NAME is the original daemon name, if any. */
177 #if defined NS_IMPL_COCOA || (defined HAVE_NTGUI && defined CYGWIN)
178 # define DAEMON_MUST_EXEC
181 /* True means running Emacs without interactive terminal. */
184 /* True means remove site-lisp directories from load-path. */
187 /* Name for the server started by the daemon.*/
188 static char *daemon_name
;
190 /* Pipe used to send exit notification to the daemon parent at
194 /* Save argv and argc. */
198 static void sort_args (int argc
, char **argv
);
199 static void syms_of_emacs (void);
201 /* MSVC needs each string be shorter than 2048 bytes, so the usage
202 strings below are split to not overflow this limit. */
204 Usage: %s [OPTION-OR-FILENAME]...\n\
206 Run Emacs, the extensible, customizable, self-documenting real-time\n\
207 display editor. The recommended way to start Emacs for normal editing\n\
208 is with no options at all.\n\
210 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
211 read the main documentation for these command-line arguments.\n\
213 Initialization options:\n\
215 --batch do not do interactive display; implies -q\n\
216 --chdir DIR change to directory DIR\n\
217 --daemon start a server in the background\n\
218 --debug-init enable Emacs Lisp debugger for init file\n\
219 --display, -d DISPLAY use X server DISPLAY\n\
220 --no-desktop do not load a saved desktop\n\
221 --no-init-file, -q load neither ~/.emacs nor default.el\n\
222 --no-shared-memory, -nl do not use shared memory\n\
223 --no-site-file do not load site-start.el\n\
224 --no-site-lisp, -nsl do not add site-lisp directories to load-path\n\
225 --no-splash do not display a splash screen on startup\n\
226 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
227 --quick, -Q equivalent to:\n\
228 -q --no-site-file --no-site-lisp --no-splash\n\
229 --script FILE run FILE as an Emacs Lisp script\n\
230 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
231 --user, -u USER load ~USER/.emacs instead of your own\n\
237 FILE visit FILE using find-file\n\
238 +LINE go to line LINE in next FILE\n\
239 +LINE:COLUMN go to line LINE, column COLUMN, in next FILE\n\
240 --directory, -L DIR add DIR to variable load-path\n\
241 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
242 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
243 --file FILE visit FILE using find-file\n\
244 --find-file FILE visit FILE using find-file\n\
245 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
246 --insert FILE insert contents of FILE into current buffer\n\
247 --kill exit without asking for confirmation\n\
248 --load, -l FILE load Emacs Lisp FILE using the load function\n\
249 --visit FILE visit FILE using find-file\n\
255 --background-color, -bg COLOR window background color\n\
256 --basic-display, -D disable many display features;\n\
257 used for debugging Emacs\n\
258 --border-color, -bd COLOR main border color\n\
259 --border-width, -bw WIDTH width of main border\n\
260 --color, --color=MODE override color mode for character terminals;\n\
261 MODE defaults to `auto', and\n\
262 can also be `never', `always',\n\
263 or a mode name like `ansi8'\n\
264 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
265 --font, -fn FONT default font; must be fixed-width\n\
266 --foreground-color, -fg COLOR window foreground color\n\
267 --fullheight, -fh make the first frame high as the screen\n\
268 --fullscreen, -fs make the first frame fullscreen\n\
269 --fullwidth, -fw make the first frame wide as the screen\n\
270 --maximized, -mm make the first frame maximized\n\
271 --geometry, -g GEOMETRY window geometry\n\
272 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
273 --iconic start Emacs in iconified state\n\
274 --internal-border, -ib WIDTH width between text and main border\n\
275 --line-spacing, -lsp PIXELS additional space to put between lines\n\
276 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
277 --name NAME title for initial Emacs frame\n\
278 --no-blinking-cursor, -nbc disable blinking cursor\n\
279 --reverse-video, -r, -rv switch foreground and background\n\
280 --title, -T TITLE title for initial Emacs frame\n\
281 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
282 --xrm XRESOURCES set additional X resources\n\
283 --parent-id XID set parent window\n\
284 --help display this help and exit\n\
285 --version output version information and exit\n\
289 You can generally also specify long option names with a single -; for\n\
290 example, -batch as well as --batch. You can use any unambiguous\n\
291 abbreviation for a --option.\n\
293 Various environment variables and window system resources also affect\n\
294 Emacs' operation. See the main documentation.\n\
296 Report bugs to bug-gnu-emacs@gnu.org. First, please see the Bugs\n\
297 section of the Emacs manual or the file BUGS.\n"
300 /* True if handling a fatal error already. */
301 bool fatal_error_in_progress
;
304 /* NS autrelease pool, for memory management. */
305 static void *ns_pool
;
310 /* Report a fatal error due to signal SIG, output a backtrace of at
311 most BACKTRACE_LIMIT lines, and exit. */
313 terminate_due_to_signal (int sig
, int backtrace_limit
)
315 signal (sig
, SIG_DFL
);
316 totally_unblock_input ();
318 /* If fatal error occurs in code below, avoid infinite recursion. */
319 if (! fatal_error_in_progress
)
321 fatal_error_in_progress
= 1;
323 if (sig
== SIGTERM
|| sig
== SIGHUP
|| sig
== SIGINT
)
324 Fkill_emacs (make_number (sig
));
326 shut_down_emacs (sig
, Qnil
);
327 emacs_backtrace (backtrace_limit
);
330 /* Signal the same code; this time it will really be fatal.
331 Since we're in a signal handler, the signal is blocked, so we
332 have to unblock it if we want to really receive it. */
336 sigemptyset (&unblocked
);
337 sigaddset (&unblocked
, sig
);
338 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
344 /* This shouldn't be executed, but it prevents a warning. */
350 /* Handler for SIGDANGER. */
352 handle_danger_signal (int sig
)
354 malloc_warning ("Operating system warns that virtual memory is running low.\n");
356 /* It might be unsafe to call do_auto_save now. */
357 force_auto_save_soon ();
361 deliver_danger_signal (int sig
)
363 deliver_process_signal (sig
, handle_danger_signal
);
367 /* Code for dealing with Lisp access to the Unix command line. */
370 init_cmdargs (int argc
, char **argv
, int skip_args
)
373 Lisp_Object name
, dir
, handler
;
374 ptrdiff_t count
= SPECPDL_INDEX ();
375 Lisp_Object raw_name
;
380 raw_name
= build_string (argv
[0]);
382 /* Add /: to the front of the name
383 if it would otherwise be treated as magic. */
384 handler
= Ffind_file_name_handler (raw_name
, Qt
);
385 if (! NILP (handler
))
386 raw_name
= concat2 (build_string ("/:"), raw_name
);
388 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
389 Vinvocation_directory
= Ffile_name_directory (raw_name
);
391 /* If we got no directory in argv[0], search PATH to find where
392 Emacs actually came from. */
393 if (NILP (Vinvocation_directory
))
396 int yes
= openp (Vexec_path
, Vinvocation_name
,
397 Vexec_suffixes
, &found
, make_number (X_OK
));
400 /* Add /: to the front of the name
401 if it would otherwise be treated as magic. */
402 handler
= Ffind_file_name_handler (found
, Qt
);
403 if (! NILP (handler
))
404 found
= concat2 (build_string ("/:"), found
);
405 Vinvocation_directory
= Ffile_name_directory (found
);
409 if (!NILP (Vinvocation_directory
)
410 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
411 /* Emacs was started with relative path, like ./emacs.
413 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
415 Vinstallation_directory
= Qnil
;
417 if (!NILP (Vinvocation_directory
))
419 dir
= Vinvocation_directory
;
421 /* If we are running from the build directory, set DIR to the
422 src subdirectory of the Emacs tree, like on Posix
424 if (SBYTES (dir
) > sizeof ("/i386/") - 1
425 && 0 == strcmp (SSDATA (dir
) + SBYTES (dir
) - sizeof ("/i386/") + 1,
427 dir
= Fexpand_file_name (build_string ("../.."), dir
);
428 #else /* !WINDOWSNT */
430 name
= Fexpand_file_name (Vinvocation_name
, dir
);
433 Lisp_Object tem
, lib_src_exists
;
434 Lisp_Object etc_exists
, info_exists
;
436 /* See if dir contains subdirs for use by Emacs.
437 Check for the ones that would exist in a build directory,
438 not including lisp and info. */
439 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
440 lib_src_exists
= Ffile_exists_p (tem
);
443 /* MSDOS installations frequently remove lib-src, but we still
444 must set installation-directory, or else info won't find
445 its files (it uses the value of installation-directory). */
446 tem
= Fexpand_file_name (build_string ("info"), dir
);
447 info_exists
= Ffile_exists_p (tem
);
452 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
454 tem
= Fexpand_file_name (build_string ("etc"), dir
);
455 etc_exists
= Ffile_exists_p (tem
);
456 if (!NILP (etc_exists
))
458 Vinstallation_directory
459 = Ffile_name_as_directory (dir
);
464 /* See if dir's parent contains those subdirs. */
465 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
466 lib_src_exists
= Ffile_exists_p (tem
);
470 /* See the MSDOS commentary above. */
471 tem
= Fexpand_file_name (build_string ("../info"), dir
);
472 info_exists
= Ffile_exists_p (tem
);
477 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
479 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
480 etc_exists
= Ffile_exists_p (tem
);
481 if (!NILP (etc_exists
))
483 tem
= Fexpand_file_name (build_string (".."), dir
);
484 Vinstallation_directory
485 = Ffile_name_as_directory (tem
);
490 /* If the Emacs executable is actually a link,
491 next try the dir that the link points into. */
492 tem
= Ffile_symlink_p (name
);
495 name
= Fexpand_file_name (tem
, dir
);
496 dir
= Ffile_name_directory (name
);
503 Vcommand_line_args
= Qnil
;
505 for (i
= argc
- 1; i
>= 0; i
--)
507 if (i
== 0 || i
> skip_args
)
508 /* For the moment, we keep arguments as is in unibyte strings.
509 They are decoded in the function command-line after we know
510 locale-coding-system. */
512 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
516 unbind_to (count
, Qnil
);
519 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
520 doc
: /* Return the program name that was used to run Emacs.
521 Any directory names are omitted. */)
524 return Fcopy_sequence (Vinvocation_name
);
527 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
529 doc
: /* Return the directory name in which the Emacs executable was located. */)
532 return Fcopy_sequence (Vinvocation_directory
);
537 /* A valid but unlikely value for the TZ environment value.
538 It is OK (though a bit slower) if the user actually chooses this value. */
539 static char const dump_tz
[] = "UtC0";
542 #ifndef ORDINARY_LINK
543 /* We don't include crtbegin.o and crtend.o in the link,
544 so these functions and variables might be missed.
545 Provide dummy definitions to avoid error.
546 (We don't have any real constructors or destructors.) */
549 /* Define a dummy function F. Declare F too, to pacify gcc
550 -Wmissing-prototypes. */
551 #define DEFINE_DUMMY_FUNCTION(f) \
552 void f (void) ATTRIBUTE_CONST EXTERNALLY_VISIBLE; void f (void) {}
554 #ifndef GCC_CTORS_IN_LIBC
555 DEFINE_DUMMY_FUNCTION (__do_global_ctors
)
556 DEFINE_DUMMY_FUNCTION (__do_global_ctors_aux
)
557 DEFINE_DUMMY_FUNCTION (__do_global_dtors
)
558 /* GNU/Linux has a bug in its library; avoid an error. */
560 char * __CTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
562 char * __DTOR_LIST__
[2] EXTERNALLY_VISIBLE
= { (char *) (-1), 0 };
563 #endif /* GCC_CTORS_IN_LIBC */
564 DEFINE_DUMMY_FUNCTION (__main
)
565 #endif /* __GNUC__ */
566 #endif /* ORDINARY_LINK */
568 /* Test whether the next argument in ARGV matches SSTR or a prefix of
569 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
570 (the argument is supposed to have a value) store in *VALPTR either
571 the next argument or the portion of this one after the equal sign.
572 ARGV is read starting at position *SKIPPTR; this index is advanced
573 by the number of arguments used.
575 Too bad we can't just use getopt for all of this, but we don't have
576 enough information to do it right. */
579 argmatch (char **argv
, int argc
, const char *sstr
, const char *lstr
,
580 int minlen
, char **valptr
, int *skipptr
)
586 /* Don't access argv[argc]; give up in advance. */
587 if (argc
<= *skipptr
+ 1)
590 arg
= argv
[*skipptr
+1];
593 if (strcmp (arg
, sstr
) == 0)
597 *valptr
= argv
[*skipptr
+2];
604 arglen
= (valptr
!= NULL
&& (p
= strchr (arg
, '=')) != NULL
605 ? p
- arg
: strlen (arg
));
606 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
608 else if (valptr
== NULL
)
619 else if (argv
[*skipptr
+2] != NULL
)
621 *valptr
= argv
[*skipptr
+2];
631 #ifdef DOUG_LEA_MALLOC
633 /* malloc can be invoked even before main (e.g. by the dynamic
634 linker), so the dumped malloc state must be restored as early as
635 possible using this special hook. */
638 malloc_initialize_hook (void)
642 if (!malloc_using_checking
)
643 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
644 ignored if the heap to be restored was constructed without
645 malloc checking. Can't use unsetenv, since that calls malloc. */
649 for (p
= environ
; p
&& *p
; p
++)
650 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
659 malloc_set_state (malloc_state_ptr
);
660 #ifndef XMALLOC_OVERRUN_CHECK
661 free (malloc_state_ptr
);
666 if (my_heap_start
== 0)
667 my_heap_start
= sbrk (0);
668 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
672 void (*__malloc_initialize_hook
) (void) EXTERNALLY_VISIBLE
= malloc_initialize_hook
;
674 #endif /* DOUG_LEA_MALLOC */
676 /* Close standard output and standard error, reporting any write
677 errors as best we can. This is intended for use with atexit. */
679 close_output_streams (void)
681 if (close_stream (stdout
) != 0)
683 fprintf (stderr
, "Write error to standard output: %s\n",
686 _exit (EXIT_FAILURE
);
689 if (close_stream (stderr
) != 0)
690 _exit (EXIT_FAILURE
);
695 main (int argc
, char **argv
)
700 char stack_bottom_variable
;
701 bool do_initial_setlocale
;
704 #ifdef HAVE_SETRLIMIT
710 #ifdef DAEMON_MUST_EXEC
719 #ifdef G_SLICE_ALWAYS_MALLOC
720 /* This is used by the Cygwin build. */
721 xputenv ("G_SLICE=always-malloc");
727 extern char my_endbss
[];
728 extern char *my_endbss_static
;
730 if (my_heap_start
== 0)
731 my_heap_start
= sbrk (0);
733 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
737 #if defined WINDOWSNT || defined HAVE_NTGUI
738 /* Set global variables used to detect Windows version. Do this as
739 early as possible. (unexw32.c calls this function as well, but
740 the additional call here is harmless.) */
741 cache_system_info ();
744 #ifdef RUN_TIME_REMAP
746 run_time_remap (argv
[0]);
749 /* If using unexmacosx.c (set by s/darwin.h), we must do this. */
752 unexec_init_emacs_zone ();
755 atexit (close_output_streams
);
757 sort_args (argc
, argv
);
759 while (argv
[argc
]) argc
++;
761 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
763 const char *version
, *copyright
;
766 Lisp_Object tem
, tem2
;
767 tem
= Fsymbol_value (intern_c_string ("emacs-version"));
768 tem2
= Fsymbol_value (intern_c_string ("emacs-copyright"));
771 fprintf (stderr
, "Invalid value of `emacs-version'\n");
776 fprintf (stderr
, "Invalid value of `emacs-copyright'\n");
781 version
= SSDATA (tem
);
782 copyright
= SSDATA (tem2
);
787 version
= emacs_version
;
788 copyright
= emacs_copyright
;
790 printf ("GNU Emacs %s\n", version
);
791 printf ("%s\n", copyright
);
792 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
793 printf ("You may redistribute copies of Emacs\n");
794 printf ("under the terms of the GNU General Public License.\n");
795 printf ("For more information about these matters, ");
796 printf ("see the file named COPYING.\n");
800 if (argmatch (argv
, argc
, "-chdir", "--chdir", 4, &ch_to_dir
, &skip_args
))
801 if (chdir (ch_to_dir
) == -1)
803 fprintf (stderr
, "%s: Can't chdir to %s: %s\n",
804 argv
[0], ch_to_dir
, strerror (errno
));
808 dumping
= !initialized
&& (strcmp (argv
[argc
- 1], "dump") == 0
809 || strcmp (argv
[argc
- 1], "bootstrap") == 0);
811 #ifdef HAVE_PERSONALITY_LINUX32
812 if (dumping
&& ! getenv ("EMACS_HEAP_EXEC"))
814 /* Set this so we only do this once. */
815 xputenv ("EMACS_HEAP_EXEC=true");
817 /* A flag to turn off address randomization which is introduced
818 in linux kernel shipped with fedora core 4 */
819 #define ADD_NO_RANDOMIZE 0x0040000
820 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
821 #undef ADD_NO_RANDOMIZE
823 execvp (argv
[0], argv
);
825 /* If the exec fails, try to dump anyway. */
828 #endif /* HAVE_PERSONALITY_LINUX32 */
830 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
831 /* Extend the stack space available.
832 Don't do that if dumping, since some systems (e.g. DJGPP)
833 might define a smaller stack limit at that time. */
836 && (!noninteractive
|| initialized
)
838 && !getrlimit (RLIMIT_STACK
, &rlim
))
841 extern size_t re_max_failures
;
842 /* Approximate the amount regex.c needs per unit of re_max_failures. */
843 int ratio
= 20 * sizeof (char *);
844 /* Then add 33% to cover the size of the smaller stacks that regex.c
845 successively allocates and discards, on its way to the maximum. */
847 /* Add in some extra to cover
848 what we're likely to use for other reasons. */
849 newlim
= re_max_failures
* ratio
+ 200000;
851 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
852 stack allocation routine for new process that the allocation
853 fails if stack limit is not on page boundary. So, round up the
854 new limit to page boundary. */
855 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize ();
857 if (newlim
> rlim
.rlim_max
)
859 newlim
= rlim
.rlim_max
;
860 /* Don't let regex.c overflow the stack we have. */
861 re_max_failures
= (newlim
- 200000) / ratio
;
863 if (rlim
.rlim_cur
< newlim
)
864 rlim
.rlim_cur
= newlim
;
866 setrlimit (RLIMIT_STACK
, &rlim
);
868 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
870 /* Record (approximately) where the stack begins. */
871 stack_bottom
= &stack_bottom_variable
;
875 #ifndef SYSTEM_MALLOC
876 /* Arrange to get warning messages as memory fills up. */
877 memory_warnings (0, malloc_warning
);
879 /* Call malloc at least once, to run malloc_initialize_hook.
880 Also call realloc and free for consistency. */
881 free (realloc (malloc (4), 4));
883 #endif /* not SYSTEM_MALLOC */
885 #if defined (MSDOS) || defined (WINDOWSNT)
886 /* We do all file input/output as binary files. When we need to translate
887 newlines, we do that manually. */
889 #endif /* MSDOS || WINDOWSNT */
892 if (!isatty (fileno (stdin
)))
893 setmode (fileno (stdin
), O_BINARY
);
894 if (!isatty (fileno (stdout
)))
897 setmode (fileno (stdout
), O_BINARY
);
901 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
902 The build procedure uses this while dumping, to ensure that the
903 dumped Emacs does not have its system locale tables initialized,
904 as that might cause screwups when the dumped Emacs starts up. */
906 char *lc_all
= getenv ("LC_ALL");
907 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
910 /* Set locale now, so that initial error messages are localized properly.
911 fixup_locale must wait until later, since it builds strings. */
912 if (do_initial_setlocale
)
913 setlocale (LC_ALL
, "");
915 inhibit_window_system
= 0;
917 /* Handle the -t switch, which specifies filename to use as terminal. */
921 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
926 result
= emacs_open (term
, O_RDWR
, 0);
927 if (result
< 0 || dup (0) < 0)
929 char *errstring
= strerror (errno
);
930 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
935 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
938 fprintf (stderr
, "Using %s\n", term
);
939 #ifdef HAVE_WINDOW_SYSTEM
940 inhibit_window_system
= 1; /* -t => -nw */
947 /* Command line option --no-windows is deprecated and thus not mentioned
948 in the manual and usage information. */
949 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
950 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
951 inhibit_window_system
= 1;
953 /* Handle the -batch switch, which means don't do interactive display. */
955 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
958 Vundo_outer_limit
= Qnil
;
960 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
962 noninteractive
= 1; /* Set batch mode. */
963 /* Convert --script to -scriptload, un-skip it, and sort again
964 so that it will be handled in proper sequence. */
965 /* FIXME broken for --script=FILE - is that supposed to work? */
966 argv
[skip_args
- 1] = (char *) "-scriptload";
968 sort_args (argc
, argv
);
971 /* Handle the --help option, which gives a usage message. */
972 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
974 printf (USAGE1
, argv
[0], USAGE2
);
980 if (argmatch (argv
, argc
, "-daemon", "--daemon", 5, NULL
, &skip_args
)
981 || argmatch (argv
, argc
, "-daemon", "--daemon", 5, &dname_arg
, &skip_args
))
986 /* Start as a daemon: fork a new child process which will run the
987 rest of the initialization code, then exit.
989 Detaching a daemon requires the following steps:
993 - close the tty file-descriptors
995 We only want to do the last 2 steps once the daemon is ready to
996 serve requests, i.e. after loading .emacs (initialization).
997 OTOH initialization may start subprocesses (e.g. ispell) and these
998 should be run from the proper process (the one that will end up
999 running as daemon) and with the proper "session id" in order for
1000 them to keep working after detaching, so fork and setsid need to be
1001 performed before initialization.
1003 We want to avoid exiting before the server socket is ready, so
1004 use a pipe for synchronization. The parent waits for the child
1005 to close its end of the pipe (using `daemon-initialized')
1007 if (pipe (daemon_pipe
) == -1)
1009 fprintf (stderr
, "Cannot pipe!\n");
1013 #ifndef DAEMON_MUST_EXEC
1015 fprintf (stderr
, "\nWarning: due to a long standing Gtk+ bug\nhttp://bugzilla.gnome.org/show_bug.cgi?id=85715\n\
1016 Emacs might crash when run in daemon mode and the X11 connection is unexpectedly lost.\n\
1017 Using an Emacs configured with --with-x-toolkit=lucid does not have this problem.\n");
1018 #endif /* USE_GTK */
1020 #else /* DAEMON_MUST_EXEC */
1021 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1022 f
= fork (); /* in orig */
1024 f
= 0; /* in exec'd */
1025 #endif /* !DAEMON_MUST_EXEC */
1031 /* Close unused writing end of the pipe. */
1032 close (daemon_pipe
[1]);
1034 /* Just wait for the child to close its end of the pipe. */
1037 retval
= read (daemon_pipe
[0], &buf
, 1);
1039 while (retval
== -1 && errno
== EINTR
);
1043 fprintf (stderr
, "Error reading status from child\n");
1046 else if (retval
== 0)
1048 fprintf (stderr
, "Error: server did not start correctly\n");
1052 close (daemon_pipe
[0]);
1057 fprintf (stderr
, "Cannot fork!\n");
1061 #ifdef DAEMON_MUST_EXEC
1063 /* In orig process, forked as child, OR in exec'd. */
1064 if (!dname_arg
|| !strchr (dname_arg
, '\n'))
1065 { /* In orig, child: now exec w/special daemon name. */
1068 snprintf (fdStr
, sizeof fdStr
,
1069 "--daemon=\n%d,%d\n%s", daemon_pipe
[0],
1070 daemon_pipe
[1], dname_arg
? dname_arg
: "");
1072 if (! (0 <= fdStrlen
&& fdStrlen
< sizeof fdStr
))
1074 fprintf (stderr
, "daemon: child name too long\n");
1078 argv
[skip_args
] = fdStr
;
1080 execv (argv
[0], argv
);
1081 fprintf (stderr
, "emacs daemon: exec failed: %d\n", errno
);
1085 /* In exec'd: parse special dname into pipe and name info. */
1086 if (!dname_arg
|| !strchr (dname_arg
, '\n')
1087 || strlen (dname_arg
) < 1 || strlen (dname_arg
) > 70)
1089 fprintf (stderr
, "emacs daemon: daemon name absent or too long\n");
1092 dname_arg2
[0] = '\0';
1093 sscanf (dname_arg
, "\n%d,%d\n%s", &(daemon_pipe
[0]), &(daemon_pipe
[1]),
1095 dname_arg
= *dname_arg2
? dname_arg2
: NULL
;
1097 #endif /* DAEMON_MUST_EXEC */
1100 daemon_name
= xstrdup (dname_arg
);
1101 /* Close unused reading end of the pipe. */
1102 close (daemon_pipe
[0]);
1103 /* Make sure that the used end of the pipe is closed on exec, so
1104 that it is not accessible to programs started from .emacs. */
1105 fcntl (daemon_pipe
[1], F_SETFD
, FD_CLOEXEC
);
1109 fprintf (stderr
, "This platform does not support the -daemon flag.\n");
1114 #if defined (HAVE_PTHREAD) && !defined (SYSTEM_MALLOC) && !defined (DOUG_LEA_MALLOC)
1115 if (! noninteractive
)
1117 extern void malloc_enable_thread (void);
1119 malloc_enable_thread ();
1123 init_signals (dumping
);
1125 noninteractive1
= noninteractive
;
1127 /* Perform basic initializations (not merely interning symbols). */
1134 init_charset_once ();
1135 init_coding_once ();
1136 init_syntax_once (); /* Create standard syntax table. */
1137 init_category_once (); /* Create standard category table. */
1138 /* Must be done before init_buffer. */
1139 init_casetab_once ();
1140 init_buffer_once (); /* Create buffer table and some buffers. */
1141 init_minibuf_once (); /* Create list of minibuffers. */
1142 /* Must precede init_window_once. */
1144 /* Call syms_of_xfaces before init_window_once because that
1145 function creates Vterminal_frame. Termcap frames now use
1146 faces, and the face implementation uses some symbols as
1149 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1150 be better to arrange things not to have this dependency. */
1152 /* Call syms_of_keyboard before init_window_once because
1153 keyboard sets up symbols that include some face names that
1154 the X support will want to use. This can happen when
1155 CANNOT_DUMP is defined. */
1156 syms_of_keyboard ();
1158 /* Called before syms_of_fileio, because it sets up Qerror_condition. */
1160 syms_of_fns (); /* Before syms_of_charset which uses hashtables. */
1162 /* Before syms_of_coding to initialize Vgc_cons_threshold. */
1164 /* Before syms_of_coding because it initializes Qcharsetp. */
1166 /* Before init_window_once, because it sets up the
1167 Vcoding_system_hash_table. */
1168 syms_of_coding (); /* This should be after syms_of_fileio. */
1170 init_window_once (); /* Init the window system. */
1171 #ifdef HAVE_WINDOW_SYSTEM
1172 init_fringe_once (); /* Swap bitmaps if necessary. */
1173 #endif /* HAVE_WINDOW_SYSTEM */
1178 if (do_initial_setlocale
)
1181 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1182 Vsystem_time_locale
= Vprevious_system_time_locale
;
1187 running_asynch_code
= 0;
1191 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1194 = argmatch (argv
, argc
, "-nsl", "--no-site-lisp", 11, NULL
, &skip_args
);
1197 ns_pool
= ns_alloc_autorelease_pool ();
1198 if (!noninteractive
)
1200 #ifdef NS_IMPL_COCOA
1201 if (skip_args
< argc
)
1203 /* FIXME: Do the right thing if getenv returns NULL, or if
1205 if (!strncmp (argv
[skip_args
], "-psn", 4))
1208 chdir (getenv ("HOME"));
1210 else if (skip_args
+1 < argc
&& !strncmp (argv
[skip_args
+1], "-psn", 4))
1213 chdir (getenv ("HOME"));
1218 #endif /* HAVE_NS */
1220 #ifdef HAVE_X_WINDOWS
1221 /* Stupid kludge to catch command-line display spec. We can't
1222 handle this argument entirely in window system dependent code
1223 because we don't even know which window system dependent code
1224 to run until we've recognized this argument. */
1226 char *displayname
= 0;
1227 int count_before
= skip_args
;
1229 /* Skip any number of -d options, but only use the last one. */
1232 int count_before_this
= skip_args
;
1234 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1236 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1241 count_before
= count_before_this
;
1244 /* If we have the form --display=NAME,
1245 convert it into -d name.
1246 This requires inserting a new element into argv. */
1247 if (displayname
&& count_before
< skip_args
)
1249 if (skip_args
== count_before
+ 1)
1251 memmove (argv
+ count_before
+ 3, argv
+ count_before
+ 2,
1252 (argc
- (count_before
+ 2)) * sizeof *argv
);
1253 argv
[count_before
+ 2] = displayname
;
1256 argv
[count_before
+ 1] = (char *) "-d";
1261 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1262 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1266 /* Don't actually discard this arg. */
1267 skip_args
= count_before
;
1269 #else /* !HAVE_X_WINDOWS */
1272 int count_before
= skip_args
;
1274 if (argmatch (argv
, argc
, "-Q", "--quick", 3, NULL
, &skip_args
)
1275 || argmatch (argv
, argc
, "-quick", 0, 2, NULL
, &skip_args
))
1278 skip_args
= count_before
;
1282 /* argmatch must not be used after here,
1283 except when building temacs
1284 because the -d argument has not been skipped in skip_args. */
1287 /* Call early 'cause init_environment needs it. */
1289 /* Set defaults for several environment variables. */
1291 init_environment (argc
, argv
, skip_args
);
1298 globals_of_w32notify ();
1299 /* Initialize environment from registry settings. */
1300 init_environment (argv
);
1301 init_ntproc (dumping
); /* must precede init_editfns. */
1304 /* Initialize and GC-protect Vinitial_environment and
1305 Vprocess_environment before set_initial_environment fills them
1308 syms_of_callproc ();
1309 /* egetenv is a pretty low-level facility, which may get called in
1310 many circumstances; it seems flimsy to put off initializing it
1311 until calling init_callproc. Do not do it when dumping. */
1313 set_initial_environment ();
1315 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1316 if this is not done. Do it after set_global_environment so that we
1317 don't pollute Vglobal_environment. */
1318 /* Setting LANG here will defeat the startup locale processing... */
1323 init_buffer (); /* Init default directory of main buffer. */
1325 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1326 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1330 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1331 Lisp_Object old_log_max
;
1332 old_log_max
= Vmessage_log_max
;
1333 XSETFASTINT (Vmessage_log_max
, 0);
1334 message_dolog ("", 0, 1, 0);
1335 Vmessage_log_max
= old_log_max
;
1338 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1341 /* Check to see if Emacs has been installed correctly. */
1342 check_windows_init_file ();
1345 /* Intern the names of all standard functions and variables;
1346 define standard keys. */
1350 /* The basic levels of Lisp must come first. Note that
1351 syms_of_data and some others have already been called. */
1356 syms_of_floatfns ();
1359 syms_of_bytecode ();
1361 syms_of_casefiddle ();
1363 syms_of_category ();
1365 syms_of_character ();
1372 syms_of_filelock ();
1375 /* syms_of_keymap (); */
1383 syms_of_terminal ();
1389 syms_of_textprop ();
1390 syms_of_composite ();
1393 #endif /* WINDOWSNT */
1394 #if defined CYGWIN && defined HAVE_NTGUI
1400 #ifdef HAVE_WINDOW_SYSTEM
1403 #endif /* HAVE_WINDOW_SYSTEM */
1404 #ifdef HAVE_X_WINDOWS
1409 syms_of_xsettings ();
1416 #endif /* HAVE_X_WINDOWS */
1429 #endif /* HAVE_NTGUI */
1431 #if defined WINDOWSNT || defined HAVE_NTGUI
1432 syms_of_w32select ();
1439 syms_of_win16select ();
1446 syms_of_nsselect ();
1448 #endif /* HAVE_NS */
1456 #endif /* HAVE_INOTIFY */
1459 syms_of_dbusbind ();
1460 #endif /* HAVE_DBUS */
1464 syms_of_w32notify ();
1465 #endif /* WINDOWSNT */
1467 syms_of_profiler ();
1469 keys_of_casefiddle ();
1472 keys_of_keyboard ();
1478 /* Initialization that must be done even if the global variable
1479 initialized is non zero. */
1481 globals_of_w32font ();
1482 globals_of_w32fns ();
1483 globals_of_w32menu ();
1484 #endif /* HAVE_NTGUI */
1486 #if defined WINDOWSNT || defined HAVE_NTGUI
1487 globals_of_w32select ();
1493 init_editfns (); /* init_process_emacs uses Voperating_system_release. */
1494 init_process_emacs (); /* init_display uses add_keyboard_wait_descriptor. */
1495 init_keyboard (); /* This too must precede init_sys_modes. */
1496 if (!noninteractive
)
1497 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1499 #ifdef HAVE_WINDOW_SYSTEM
1501 #endif /* HAVE_WINDOW_SYSTEM */
1509 /* Handle -l loadup, args passed by Makefile. */
1510 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1511 Vtop_level
= Fcons (intern_c_string ("load"),
1512 Fcons (build_string (file
), Qnil
));
1513 /* Unless next switch is -nl, load "loadup.el" first thing. */
1515 Vtop_level
= Fcons (intern_c_string ("load"),
1516 Fcons (build_string ("loadup.el"), Qnil
));
1523 /* If the execution TZ happens to be the same as the dump TZ,
1524 change it to some other value and then change it back,
1525 to force the underlying implementation to reload the TZ info.
1526 This is needed on implementations that load TZ info from files,
1527 since the TZ file contents may differ between dump and execution. */
1528 char *tz
= getenv ("TZ");
1529 if (tz
&& !strcmp (tz
, dump_tz
))
1539 /* Set up for profiling. This is known to work on FreeBSD,
1540 GNU/Linux and MinGW. It might work on some other systems too.
1541 Give it a try and tell us if it works on your system. To compile
1542 for profiling, use the configure option --enable-profiling. */
1543 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined (__MINGW32__)
1548 extern unsigned char etext
asm ("etext");
1554 monstartup ((uintptr_t) __executable_start
, (uintptr_t) &etext
);
1563 #ifdef LOCALTIME_CACHE
1564 /* Some versions of localtime have a bug. They cache the value of the time
1565 zone rather than looking it up every time. Since localtime() is
1566 called to bolt the undumping time into the undumped emacs, this
1567 results in localtime ignoring the TZ environment variable.
1568 This flushes the new TZ value into localtime. */
1570 #endif /* defined (LOCALTIME_CACHE) */
1572 /* Enter editor command loop. This never returns. */
1578 /* Sort the args so we can find the most important ones
1579 at the beginning of argv. */
1581 /* First, here's a table of all the standard options. */
1583 struct standard_args
1586 const char *longname
;
1591 static const struct standard_args standard_args
[] =
1593 { "-version", "--version", 150, 0 },
1594 { "-chdir", "--chdir", 130, 1 },
1595 { "-t", "--terminal", 120, 1 },
1596 { "-nw", "--no-window-system", 110, 0 },
1597 { "-nw", "--no-windows", 110, 0 },
1598 { "-batch", "--batch", 100, 0 },
1599 { "-script", "--script", 100, 1 },
1600 { "-daemon", "--daemon", 99, 0 },
1601 { "-help", "--help", 90, 0 },
1602 { "-nl", "--no-loadup", 70, 0 },
1603 { "-nsl", "--no-site-lisp", 65, 0 },
1604 /* -d must come last before the options handled in startup.el. */
1605 { "-d", "--display", 60, 1 },
1606 { "-display", 0, 60, 1 },
1607 /* Now for the options handled in `command-line' (startup.el). */
1608 /* (Note that to imply -nsl, -Q is partially handled here.) */
1609 { "-Q", "--quick", 55, 0 },
1610 { "-quick", 0, 55, 0 },
1611 { "-q", "--no-init-file", 50, 0 },
1612 { "-no-init-file", 0, 50, 0 },
1613 { "-no-site-file", "--no-site-file", 40, 0 },
1614 { "-u", "--user", 30, 1 },
1615 { "-user", 0, 30, 1 },
1616 { "-debug-init", "--debug-init", 20, 0 },
1617 { "-iconic", "--iconic", 15, 0 },
1618 { "-D", "--basic-display", 12, 0},
1619 { "-basic-display", 0, 12, 0},
1620 { "-nbc", "--no-blinking-cursor", 12, 0 },
1621 /* Now for the options handled in `command-line-1' (startup.el). */
1622 { "-nbi", "--no-bitmap-icon", 10, 0 },
1623 { "-bg", "--background-color", 10, 1 },
1624 { "-background", 0, 10, 1 },
1625 { "-fg", "--foreground-color", 10, 1 },
1626 { "-foreground", 0, 10, 1 },
1627 { "-bd", "--border-color", 10, 1 },
1628 { "-bw", "--border-width", 10, 1 },
1629 { "-ib", "--internal-border", 10, 1 },
1630 { "-ms", "--mouse-color", 10, 1 },
1631 { "-cr", "--cursor-color", 10, 1 },
1632 { "-fn", "--font", 10, 1 },
1633 { "-font", 0, 10, 1 },
1634 { "-fs", "--fullscreen", 10, 0 },
1635 { "-fw", "--fullwidth", 10, 0 },
1636 { "-fh", "--fullheight", 10, 0 },
1637 { "-mm", "--maximized", 10, 0 },
1638 { "-g", "--geometry", 10, 1 },
1639 { "-geometry", 0, 10, 1 },
1640 { "-T", "--title", 10, 1 },
1641 { "-title", 0, 10, 1 },
1642 { "-name", "--name", 10, 1 },
1643 { "-xrm", "--xrm", 10, 1 },
1644 { "-parent-id", "--parent-id", 10, 1 },
1645 { "-r", "--reverse-video", 5, 0 },
1647 { "-reverse", 0, 5, 0 },
1648 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1649 { "-vb", "--vertical-scroll-bars", 5, 0 },
1650 { "-color", "--color", 5, 0},
1651 { "-no-splash", "--no-splash", 3, 0 },
1652 { "-no-desktop", "--no-desktop", 3, 0 },
1654 { "-NSAutoLaunch", 0, 5, 1 },
1655 { "-NXAutoLaunch", 0, 5, 1 },
1656 { "-disable-font-backend", "--disable-font-backend", 65, 0 },
1657 { "-_NSMachLaunch", 0, 85, 1 },
1658 { "-MachLaunch", 0, 85, 1 },
1659 { "-macosx", 0, 85, 0 },
1660 { "-NSHost", 0, 85, 1 },
1662 /* These have the same priority as ordinary file name args,
1663 so they are not reordered with respect to those. */
1664 { "-L", "--directory", 0, 1 },
1665 { "-directory", 0, 0, 1 },
1666 { "-l", "--load", 0, 1 },
1667 { "-load", 0, 0, 1 },
1668 /* This has no longname, because using --scriptload confuses sort_args,
1669 because then the --script long option seems to match twice; ie
1670 you can't have a long option which is a prefix of another long
1671 option. In any case, this is entirely an internal option. */
1672 { "-scriptload", NULL
, 0, 1 },
1673 { "-f", "--funcall", 0, 1 },
1674 { "-funcall", 0, 0, 1 },
1675 { "-eval", "--eval", 0, 1 },
1676 { "-execute", "--execute", 0, 1 },
1677 { "-find-file", "--find-file", 0, 1 },
1678 { "-visit", "--visit", 0, 1 },
1679 { "-file", "--file", 0, 1 },
1680 { "-insert", "--insert", 0, 1 },
1682 { "-NXOpen", 0, 0, 1 },
1683 { "-NXOpenTemp", 0, 0, 1 },
1684 { "-NSOpen", 0, 0, 1 },
1685 { "-NSOpenTemp", 0, 0, 1 },
1686 { "-GSFilePath", 0, 0, 1 },
1688 /* This should be processed after ordinary file name args and the like. */
1689 { "-kill", "--kill", -10, 0 },
1692 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1693 so that the highest priority ones come first.
1694 Do not change the order of elements of equal priority.
1695 If an option takes an argument, keep it and its argument together.
1697 If an option that takes no argument appears more
1698 than once, eliminate all but one copy of it. */
1701 sort_args (int argc
, char **argv
)
1703 char **new = xmalloc (argc
* sizeof *new);
1704 /* For each element of argv,
1705 the corresponding element of options is:
1706 0 for an option that takes no arguments,
1707 1 for an option that takes one argument, etc.
1708 -1 for an ordinary non-option argument. */
1709 int *options
= xnmalloc (argc
, sizeof *options
);
1710 int *priority
= xnmalloc (argc
, sizeof *priority
);
1712 int incoming_used
= 1;
1716 /* Categorize all the options,
1717 and figure out which argv elts are option arguments. */
1718 for (from
= 1; from
< argc
; from
++)
1722 if (argv
[from
][0] == '-')
1726 /* If we have found "--", don't consider
1727 any more arguments as options. */
1728 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1730 /* Leave the "--", and everything following it, at the end. */
1731 for (; from
< argc
; from
++)
1733 priority
[from
] = -100;
1739 /* Look for a match with a known old-fashioned option. */
1740 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1741 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1743 options
[from
] = standard_args
[i
].nargs
;
1744 priority
[from
] = standard_args
[i
].priority
;
1745 if (from
+ standard_args
[i
].nargs
>= argc
)
1746 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1747 from
+= standard_args
[i
].nargs
;
1751 /* Look for a match with a known long option.
1752 MATCH is -1 if no match so far, -2 if two or more matches so far,
1753 >= 0 (the table index of the match) if just one match so far. */
1754 if (argv
[from
][1] == '-')
1756 char const *equals
= strchr (argv
[from
], '=');
1758 equals
? equals
- argv
[from
] : strlen (argv
[from
]);
1763 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1764 if (standard_args
[i
].longname
1765 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1774 /* If we found exactly one match, use that. */
1777 options
[from
] = standard_args
[match
].nargs
;
1778 priority
[from
] = standard_args
[match
].priority
;
1779 /* If --OPTION=VALUE syntax is used,
1780 this option uses just one argv element. */
1783 if (from
+ options
[from
] >= argc
)
1784 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1785 from
+= options
[from
];
1787 /* FIXME When match < 0, shouldn't there be some error,
1788 or at least indication to the user that there was a
1795 /* Copy the arguments, in order of decreasing priority, to NEW. */
1797 while (incoming_used
< argc
)
1800 int best_priority
= -9999;
1802 /* Find the highest priority remaining option.
1803 If several have equal priority, take the first of them. */
1804 for (from
= 1; from
< argc
; from
++)
1806 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1808 best_priority
= priority
[from
];
1811 /* Skip option arguments--they are tied to the options. */
1812 if (options
[from
] > 0)
1813 from
+= options
[from
];
1819 /* Copy the highest priority remaining option, with its args, to NEW.
1820 Unless it is a duplicate of the previous one. */
1821 if (! (options
[best
] == 0
1822 && ! strcmp (new[to
- 1], argv
[best
])))
1824 new[to
++] = argv
[best
];
1825 for (i
= 0; i
< options
[best
]; i
++)
1826 new[to
++] = argv
[best
+ i
+ 1];
1829 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
1831 /* Clear out this option in ARGV. */
1833 for (i
= 0; i
< options
[best
]; i
++)
1834 argv
[best
+ i
+ 1] = 0;
1837 /* If duplicate options were deleted, fill up extra space with null ptrs. */
1841 memcpy (argv
, new, sizeof (char *) * argc
);
1848 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1849 doc
: /* Exit the Emacs job and kill it.
1850 If ARG is an integer, return ARG as the exit program code.
1851 If ARG is a string, stuff it as keyboard input.
1853 This function is called upon receipt of the signals SIGTERM
1854 or SIGHUP, and upon SIGINT in batch mode.
1856 The value of `kill-emacs-hook', if not void,
1857 is a list of functions (of no args),
1858 all of which are called before Emacs is actually killed. */)
1861 struct gcpro gcpro1
;
1870 hook
= intern ("kill-emacs-hook");
1871 Frun_hooks (1, &hook
);
1875 #ifdef HAVE_X_WINDOWS
1876 /* Transfer any clipboards we own to the clipboard manager. */
1877 x_clipboard_manager_save_all ();
1880 shut_down_emacs (0, STRINGP (arg
) ? arg
: Qnil
);
1883 ns_release_autorelease_pool (ns_pool
);
1886 /* If we have an auto-save list file,
1887 kill it because we are exiting Emacs deliberately (not crashing).
1888 Do it after shut_down_emacs, which does an auto-save. */
1889 if (STRINGP (Vauto_save_list_file_name
))
1890 unlink (SSDATA (Vauto_save_list_file_name
));
1893 exit_code
= (XINT (arg
) < 0
1894 ? XINT (arg
) | INT_MIN
1895 : XINT (arg
) & INT_MAX
);
1897 exit_code
= EXIT_SUCCESS
;
1902 /* Perform an orderly shutdown of Emacs. Autosave any modified
1903 buffers, kill any child processes, clean up the terminal modes (if
1904 we're in the foreground), and other stuff like that. Don't perform
1905 any redisplay; this may be called when Emacs is shutting down in
1906 the background, or after its X connection has died.
1908 If SIG is a signal number, print a message for it.
1910 This is called by fatal signal handlers, X protocol error handlers,
1914 shut_down_emacs (int sig
, Lisp_Object stuff
)
1916 /* Prevent running of hooks from now on. */
1919 /* Don't update display from now on. */
1920 Vinhibit_redisplay
= Qt
;
1922 /* If we are controlling the terminal, reset terminal modes. */
1925 pid_t pgrp
= getpgrp ();
1926 pid_t tpgrp
= tcgetpgrp (0);
1927 if ((tpgrp
!= -1) && tpgrp
== pgrp
)
1929 reset_all_sys_modes ();
1930 if (sig
&& sig
!= SIGTERM
)
1932 static char const format
[] = "Fatal error %d: ";
1933 char buf
[sizeof format
- 2 + INT_STRLEN_BOUND (int)];
1934 int buflen
= sprintf (buf
, format
, sig
);
1935 char const *sig_desc
= safe_strsignal (sig
);
1936 ignore_value (write (STDERR_FILENO
, buf
, buflen
));
1937 ignore_value (write (STDERR_FILENO
, sig_desc
, strlen (sig_desc
)));
1943 reset_all_sys_modes ();
1946 stuff_buffered_input (stuff
);
1948 inhibit_sentinels
= 1;
1949 kill_buffer_processes (Qnil
);
1950 Fdo_auto_save (Qt
, Qnil
);
1952 #ifdef CLASH_DETECTION
1953 unlock_all_files ();
1956 /* There is a tendency for a SIGIO signal to arrive within exit,
1957 and cause a SIGHUP because the input descriptor is already closed. */
1961 /* Do this only if terminating normally, we want glyph matrices
1962 etc. in a core dump. */
1963 if (sig
== 0 || sig
== SIGTERM
)
1965 check_glyph_memory ();
1966 check_message_stack ();
1974 ns_term_shutdown (sig
);
1978 xml_cleanup_parser ();
1992 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1993 doc
: /* Dump current state of Emacs into executable file FILENAME.
1994 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
1995 This is used in the file `loadup.el' when building Emacs.
1997 You must run Emacs in batch mode in order to dump it. */)
1998 (Lisp_Object filename
, Lisp_Object symfile
)
2002 ptrdiff_t count
= SPECPDL_INDEX ();
2006 if (! noninteractive
)
2007 error ("Dumping Emacs works only in batch mode");
2011 /* Warn if the gap between BSS end and heap start is larger than this. */
2012 # define MAX_HEAP_BSS_DIFF (1024*1024)
2014 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2016 fprintf (stderr
, "**************************************************\n");
2017 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2018 fprintf (stderr
, "heap (%"pMu
" bytes). This usually means that exec-shield\n",
2020 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2021 fprintf (stderr
, "fail because of this. See the section about\n");
2022 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2023 fprintf (stderr
, "**************************************************\n");
2025 #endif /* GNU_LINUX */
2027 /* Bind `command-line-processed' to nil before dumping,
2028 so that the dumped Emacs will process its command line
2029 and set up to work with X windows if appropriate. */
2030 symbol
= intern ("command-line-processed");
2031 specbind (symbol
, Qnil
);
2033 CHECK_STRING (filename
);
2034 filename
= Fexpand_file_name (filename
, Qnil
);
2035 if (!NILP (symfile
))
2037 CHECK_STRING (symfile
);
2038 if (SCHARS (symfile
))
2039 symfile
= Fexpand_file_name (symfile
, Qnil
);
2043 Vpurify_flag
= Qnil
;
2046 set_time_zone_rule (dump_tz
);
2047 #ifndef LOCALTIME_CACHE
2048 /* Force a tz reload, since set_time_zone_rule doesn't. */
2054 /* Tell malloc where start of impure now is. */
2055 /* Also arrange for warnings when nearly out of space. */
2056 #ifndef SYSTEM_MALLOC
2058 /* On Windows, this was done before dumping, and that once suffices.
2059 Meanwhile, my_edata is not valid on Windows. */
2061 extern char my_edata
[];
2062 memory_warnings (my_edata
, malloc_warning
);
2064 #endif /* not WINDOWSNT */
2065 #endif /* not SYSTEM_MALLOC */
2066 #ifdef DOUG_LEA_MALLOC
2067 malloc_state_ptr
= malloc_get_state ();
2070 #ifdef USE_MMAP_FOR_BUFFERS
2073 unexec (SSDATA (filename
), !NILP (symfile
) ? SSDATA (symfile
) : 0);
2074 #ifdef USE_MMAP_FOR_BUFFERS
2077 #ifdef DOUG_LEA_MALLOC
2078 free (malloc_state_ptr
);
2082 Vlibrary_cache
= Qnil
;
2084 #ifdef HAVE_WINDOW_SYSTEM
2085 reset_image_types ();
2090 return unbind_to (count
, Qnil
);
2093 #endif /* not CANNOT_DUMP */
2096 /* Recover from setlocale (LC_ALL, ""). */
2100 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2101 so that numbers are read and printed properly for Emacs Lisp. */
2102 setlocale (LC_NUMERIC
, "C");
2105 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2108 synchronize_locale (int category
, Lisp_Object
*plocale
, Lisp_Object desired_locale
)
2110 if (! EQ (*plocale
, desired_locale
))
2112 *plocale
= desired_locale
;
2113 setlocale (category
, (STRINGP (desired_locale
)
2114 ? SSDATA (desired_locale
)
2119 /* Set system time locale to match Vsystem_time_locale, if possible. */
2121 synchronize_system_time_locale (void)
2123 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2124 Vsystem_time_locale
);
2127 /* Set system messages locale to match Vsystem_messages_locale, if
2130 synchronize_system_messages_locale (void)
2133 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2134 Vsystem_messages_locale
);
2137 #endif /* HAVE_SETLOCALE */
2141 decode_env_path (const char *evarname
, const char *defalt
)
2143 const char *path
, *p
;
2144 Lisp_Object lpath
, element
, tem
;
2147 const char *emacs_dir
= egetenv ("emacs_dir");
2148 static const char *emacs_dir_env
= "%emacs_dir%/";
2149 const size_t emacs_dir_len
= strlen (emacs_dir_env
);
2152 /* It's okay to use getenv here, because this function is only used
2153 to initialize variables when Emacs starts up, and isn't called
2156 path
= getenv (evarname
);
2167 /* Ensure values from the environment use the proper directory separator. */
2170 char *path_copy
= alloca (strlen (path
) + 1);
2171 strcpy (path_copy
, path
);
2172 dostounix_filename (path_copy
);
2179 p
= strchr (path
, SEPCHAR
);
2181 p
= path
+ strlen (path
);
2182 element
= (p
- path
? make_string (path
, p
- path
)
2183 : build_string ("."));
2185 /* Relative file names in the default path are interpreted as
2186 being relative to $emacs_dir. */
2187 if (emacs_dir
&& defaulted
2188 && strncmp (path
, emacs_dir_env
, emacs_dir_len
) == 0)
2189 element
= Fexpand_file_name (Fsubstring (element
,
2190 make_number (emacs_dir_len
),
2192 build_string (emacs_dir
));
2195 /* Add /: to the front of the name
2196 if it would otherwise be treated as magic. */
2197 tem
= Ffind_file_name_handler (element
, Qt
);
2199 /* However, if the handler says "I'm safe",
2200 don't bother adding /:. */
2204 prop
= Fget (tem
, intern ("safe-magic"));
2210 element
= concat2 (build_string ("/:"), element
);
2212 lpath
= Fcons (element
, lpath
);
2218 return Fnreverse (lpath
);
2221 DEFUN ("daemonp", Fdaemonp
, Sdaemonp
, 0, 0, 0,
2222 doc
: /* Return non-nil if the current emacs process is a daemon.
2223 If the daemon was given a name argument, return that name. */)
2228 return build_string (daemon_name
);
2235 DEFUN ("daemon-initialized", Fdaemon_initialized
, Sdaemon_initialized
, 0, 0, 0,
2236 doc
: /* Mark the Emacs daemon as being initialized.
2237 This finishes the daemonization process by doing the other half of detaching
2238 from the parent process and its tty file descriptors. */)
2245 error ("This function can only be called if emacs is run as a daemon");
2247 if (daemon_pipe
[1] < 0)
2248 error ("The daemon has already been initialized");
2250 if (NILP (Vafter_init_time
))
2251 error ("This function can only be called after loading the init files");
2253 /* Get rid of stdin, stdout and stderr. */
2254 nfd
= open ("/dev/null", O_RDWR
);
2256 err
|= dup2 (nfd
, 0) < 0;
2257 err
|= dup2 (nfd
, 1) < 0;
2258 err
|= dup2 (nfd
, 2) < 0;
2259 err
|= close (nfd
) != 0;
2261 /* Closing the pipe will notify the parent that it can exit.
2262 FIXME: In case some other process inherited the pipe, closing it here
2263 won't notify the parent because it's still open elsewhere, so we
2264 additionally send a byte, just to make sure the parent really exits.
2265 Instead, we should probably close the pipe in start-process and
2266 call-process to make sure the pipe is never inherited by
2268 err
|= write (daemon_pipe
[1], "\n", 1) < 0;
2269 err
|= close (daemon_pipe
[1]) != 0;
2270 /* Set it to an invalid value so we know we've already run this function. */
2271 daemon_pipe
[1] = -1;
2274 error ("I/O error during daemon initialization");
2279 syms_of_emacs (void)
2281 DEFSYM (Qfile_name_handler_alist
, "file-name-handler-alist");
2282 DEFSYM (Qrisky_local_variable
, "risky-local-variable");
2283 DEFSYM (Qkill_emacs
, "kill-emacs");
2286 defsubr (&Sdump_emacs
);
2289 defsubr (&Skill_emacs
);
2291 defsubr (&Sinvocation_name
);
2292 defsubr (&Sinvocation_directory
);
2293 defsubr (&Sdaemonp
);
2294 defsubr (&Sdaemon_initialized
);
2296 DEFVAR_LISP ("command-line-args", Vcommand_line_args
,
2297 doc
: /* Args passed by shell to Emacs, as a list of strings.
2298 Many arguments are deleted from the list as they are processed. */);
2300 DEFVAR_LISP ("system-type", Vsystem_type
,
2301 doc
: /* The value is a symbol indicating the type of operating system you are using.
2303 `gnu' compiled for a GNU Hurd system.
2304 `gnu/linux' compiled for a GNU/Linux system.
2305 `gnu/kfreebsd' compiled for a GNU system with a FreeBSD kernel.
2306 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2307 `ms-dos' compiled as an MS-DOS application.
2308 `windows-nt' compiled as a native W32 application.
2309 `cygwin' compiled using the Cygwin library.
2310 Anything else (in Emacs 24.1, the possibilities are: aix, berkeley-unix,
2311 hpux, irix, usg-unix-v) indicates some sort of Unix system. */);
2312 Vsystem_type
= intern_c_string (SYSTEM_TYPE
);
2313 /* See configure.ac (and config.nt) for the possible SYSTEM_TYPEs. */
2315 DEFVAR_LISP ("system-configuration", Vsystem_configuration
,
2316 doc
: /* Value is string indicating configuration Emacs was built for.
2317 On MS-Windows, the value reflects the OS flavor and version on which
2318 Emacs is running. */);
2319 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2321 DEFVAR_LISP ("system-configuration-options", Vsystem_configuration_options
,
2322 doc
: /* String containing the configuration options Emacs was built with. */);
2323 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2325 DEFVAR_BOOL ("noninteractive", noninteractive1
,
2326 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2328 DEFVAR_LISP ("kill-emacs-hook", Vkill_emacs_hook
,
2329 doc
: /* Hook run when `kill-emacs' is called.
2330 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2331 in other similar situations), functions placed on this hook should not
2332 expect to be able to interact with the user. To ask for confirmation,
2333 see `kill-emacs-query-functions' instead.
2335 Before Emacs 24.1, the hook was not run in batch mode, i.e., if
2336 `noninteractive' was non-nil. */);
2337 Vkill_emacs_hook
= Qnil
;
2339 DEFVAR_LISP ("path-separator", Vpath_separator
,
2340 doc
: /* String containing the character that separates directories in
2341 search paths, such as PATH and other similar environment variables. */);
2344 Vpath_separator
= make_string (&c
, 1);
2347 DEFVAR_LISP ("invocation-name", Vinvocation_name
,
2348 doc
: /* The program name that was used to run Emacs.
2349 Any directory names are omitted. */);
2351 DEFVAR_LISP ("invocation-directory", Vinvocation_directory
,
2352 doc
: /* The directory in which the Emacs executable was found, to run it.
2353 The value is nil if that directory's name is not known. */);
2355 DEFVAR_LISP ("installation-directory", Vinstallation_directory
,
2356 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2357 In an installed Emacs, this is normally nil. It is non-nil if
2358 both `lib-src' (on MS-DOS, `info') and `etc' directories are found
2359 within the variable `invocation-directory' or its parent. For example,
2360 this is the case when running an uninstalled Emacs executable from its
2361 build directory. */);
2362 Vinstallation_directory
= Qnil
;
2364 DEFVAR_LISP ("system-messages-locale", Vsystem_messages_locale
,
2365 doc
: /* System locale for messages. */);
2366 Vsystem_messages_locale
= Qnil
;
2368 DEFVAR_LISP ("previous-system-messages-locale",
2369 Vprevious_system_messages_locale
,
2370 doc
: /* Most recently used system locale for messages. */);
2371 Vprevious_system_messages_locale
= Qnil
;
2373 DEFVAR_LISP ("system-time-locale", Vsystem_time_locale
,
2374 doc
: /* System locale for time. */);
2375 Vsystem_time_locale
= Qnil
;
2377 DEFVAR_LISP ("previous-system-time-locale", Vprevious_system_time_locale
,
2378 doc
: /* Most recently used system locale for time. */);
2379 Vprevious_system_time_locale
= Qnil
;
2381 DEFVAR_LISP ("before-init-time", Vbefore_init_time
,
2382 doc
: /* Value of `current-time' before Emacs begins initialization. */);
2383 Vbefore_init_time
= Qnil
;
2385 DEFVAR_LISP ("after-init-time", Vafter_init_time
,
2386 doc
: /* Value of `current-time' after loading the init files.
2387 This is nil during initialization. */);
2388 Vafter_init_time
= Qnil
;
2390 DEFVAR_BOOL ("inhibit-x-resources", inhibit_x_resources
,
2391 doc
: /* If non-nil, X resources, Windows Registry settings, and NS defaults are not used. */);
2392 inhibit_x_resources
= 0;
2394 DEFVAR_LISP ("emacs-copyright", Vemacs_copyright
,
2395 doc
: /* Short copyright string for this version of Emacs. */);
2396 Vemacs_copyright
= build_string (emacs_copyright
);
2398 DEFVAR_LISP ("emacs-version", Vemacs_version
,
2399 doc
: /* Version numbers of this version of Emacs. */);
2400 Vemacs_version
= build_string (emacs_version
);
2402 DEFVAR_LISP ("dynamic-library-alist", Vdynamic_library_alist
,
2403 doc
: /* Alist of dynamic libraries vs external files implementing them.
2404 Each element is a list (LIBRARY FILE...), where the car is a symbol
2405 representing a supported external library, and the rest are strings giving
2406 alternate filenames for that library.
2408 Emacs tries to load the library from the files in the order they appear on
2409 the list; if none is loaded, the running session of Emacs won't have access
2412 Note that image types `pbm' and `xbm' do not need entries in this variable
2413 because they do not depend on external libraries and are always available.
2415 Also note that this is not a generic facility for accessing external
2416 libraries; only those already known by Emacs will be loaded. */);
2417 Vdynamic_library_alist
= Qnil
;
2418 Fput (intern_c_string ("dynamic-library-alist"), Qrisky_local_variable
, Qt
);
2421 Vlibrary_cache
= Qnil
;
2422 staticpro (&Vlibrary_cache
);
2425 /* Make sure IS_DAEMON starts up as false. */