1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985,86,87,93,94,95,97,1998 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
28 #include <sys/types.h>
36 #include <sys/ioctl.h>
41 #include "intervals.h"
44 #include "blockinput.h"
45 #include "syssignal.h"
50 #include <sys/resource.h>
57 extern void malloc_warning ();
58 extern void set_time_zone_rule ();
59 extern char *index ();
60 extern char *strerror ();
62 /* Command line args from shell, as list of strings */
63 Lisp_Object Vcommand_line_args
;
65 /* The name under which Emacs was invoked, with any leading directory
67 Lisp_Object Vinvocation_name
;
69 /* The directory name from which Emacs was invoked. */
70 Lisp_Object Vinvocation_directory
;
72 /* The directory name in which to find subdirs such as lisp and etc.
73 nil means get them only from PATH_LOADSEARCH. */
74 Lisp_Object Vinstallation_directory
;
76 /* Hook run by `kill-emacs' before it does really anything. */
77 Lisp_Object Vkill_emacs_hook
;
80 /* Hooks for signal USR1 and USR2 handing */
81 Lisp_Object Vsignal_USR1_hook
;
83 Lisp_Object Vsignal_USR2_hook
;
87 /* Set nonzero after Emacs has started up the first time.
88 Prevents reinitialization of the Lisp world and keymaps
89 on subsequent starts. */
92 #ifdef DOUG_LEA_MALLOC
93 /* Preserves a pointer to the memory allocated that copies that
94 static data inside glibc's malloc. */
95 void *malloc_state_ptr
;
96 /* From glibc, a routine that returns a copy of the malloc internal state. */
97 extern void *malloc_get_state ();
98 /* From glibc, a routine that overwrites the malloc internal state. */
99 extern void malloc_set_state ();
102 /* Variable whose value is symbol giving operating system type. */
103 Lisp_Object Vsystem_type
;
105 /* Variable whose value is string giving configuration built for. */
106 Lisp_Object Vsystem_configuration
;
108 /* Variable whose value is string giving configuration options,
109 for use when reporting bugs. */
110 Lisp_Object Vsystem_configuration_options
;
112 Lisp_Object Qfile_name_handler_alist
;
114 /* If non-zero, emacs should not attempt to use an window-specific code,
115 but instead should use the virtual terminal under which it was started */
116 int inhibit_window_system
;
118 /* If nonzero, set Emacs to run at this priority. This is also used
119 in child_setup and sys_suspend to make sure subshells run at normal
120 priority; Those functions have their own extern declaration. */
123 /* If non-zero a filter or a sentinel is running. Tested to save the match
124 data on the first attempt to change it inside asynchronous code. */
125 int running_asynch_code
;
129 extern int inherited_pgroup
;
132 #ifdef HAVE_X_WINDOWS
133 /* If non-zero, -d was specified, meaning we're using some window system. */
137 /* An address near the bottom of the stack.
138 Tells GC how to save a copy of the stack. */
141 #ifdef HAVE_WINDOW_SYSTEM
142 extern Lisp_Object Vwindow_system
;
143 #endif /* HAVE_WINDOW_SYSTEM */
145 extern Lisp_Object Vauto_save_list_file_name
;
147 #ifdef USG_SHARED_LIBRARIES
148 /* If nonzero, this is the place to put the end of the writable segment
151 unsigned int bss_end
= 0;
154 /* Nonzero means running Emacs without interactive terminal. */
158 /* Value of Lisp variable `noninteractive'.
159 Normally same as C variable `noninteractive'
160 but nothing terrible happens if user sets this one. */
164 /* Save argv and argc. */
168 static void sort_args ();
170 /* Signal code for the fatal signal that was received */
171 int fatal_error_code
;
173 /* Nonzero if handling a fatal error already */
174 int fatal_error_in_progress
;
177 int SIGUSR1_in_progress
=0;
179 handle_USR1_signal (sig
)
182 if (! SIGUSR1_in_progress
)
184 SIGUSR1_in_progress
= 1;
186 if (!NILP (Vrun_hooks
) && !noninteractive
)
187 call1 (Vrun_hooks
, intern ("signal-USR1-hook"));
189 SIGUSR1_in_progress
= 0;
194 int SIGUSR2_in_progress
=0;
196 handle_USR2_signal (sig
)
199 if (! SIGUSR2_in_progress
)
201 SIGUSR2_in_progress
= 1;
203 if (!NILP (Vrun_hooks
) && !noninteractive
)
204 call1 (Vrun_hooks
, intern ("signal-USR2-hook"));
206 SIGUSR2_in_progress
= 0;
212 /* Handle bus errors, illegal instruction, etc. */
214 fatal_error_signal (sig
)
217 fatal_error_code
= sig
;
218 signal (sig
, SIG_DFL
);
220 TOTALLY_UNBLOCK_INPUT
;
222 /* If fatal error occurs in code below, avoid infinite recursion. */
223 if (! fatal_error_in_progress
)
225 fatal_error_in_progress
= 1;
227 shut_down_emacs (sig
, 0, Qnil
);
231 LIB$
STOP (SS$_ABORT
);
233 /* Signal the same code; this time it will really be fatal.
234 Remember that since we're in a signal handler, the signal we're
235 going to send is probably blocked, so we have to unblock it if we
236 want to really receive it. */
238 sigunblock (sigmask (fatal_error_code
));
240 kill (getpid (), fatal_error_code
);
246 /* Handler for SIGDANGER. */
248 memory_warning_signal (sig
)
251 signal (sig
, memory_warning_signal
);
253 malloc_warning ("Operating system warns that virtual memory is running low.\n");
255 /* It might be unsafe to call do_auto_save now. */
256 force_auto_save_soon ();
260 /* We define abort, rather than using it from the library,
261 so that GDB can return from a breakpoint here. */
266 kill (getpid (), SIGABRT
);
270 /* Code for dealing with Lisp access to the Unix command line */
273 init_cmdargs (argc
, argv
, skip_args
)
279 Lisp_Object name
, dir
, tem
;
280 int count
= specpdl_ptr
- specpdl
;
281 Lisp_Object raw_name
;
286 raw_name
= build_string (argv
[0]);
288 /* Add /: to the front of the name
289 if it would otherwise be treated as magic. */
290 tem
= Ffind_file_name_handler (raw_name
, Qt
);
292 raw_name
= concat2 (build_string ("/:"), raw_name
);
294 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
295 Vinvocation_directory
= Ffile_name_directory (raw_name
);
297 /* If we got no directory in argv[0], search PATH to find where
298 Emacs actually came from. */
299 if (NILP (Vinvocation_directory
))
302 int yes
= openp (Vexec_path
, Vinvocation_name
,
303 EXEC_SUFFIXES
, &found
, 1);
306 /* Add /: to the front of the name
307 if it would otherwise be treated as magic. */
308 tem
= Ffind_file_name_handler (found
, Qt
);
310 found
= concat2 (build_string ("/:"), found
);
311 Vinvocation_directory
= Ffile_name_directory (found
);
315 if (!NILP (Vinvocation_directory
)
316 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
317 /* Emacs was started with relative path, like ./emacs.
319 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
321 Vinstallation_directory
= Qnil
;
323 if (!NILP (Vinvocation_directory
))
325 dir
= Vinvocation_directory
;
326 name
= Fexpand_file_name (Vinvocation_name
, dir
);
329 Lisp_Object tem
, lib_src_exists
;
330 Lisp_Object etc_exists
, info_exists
;
332 /* See if dir contains subdirs for use by Emacs.
333 Check for the ones that would exist in a build directory,
334 not including lisp and info. */
335 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
336 lib_src_exists
= Ffile_exists_p (tem
);
339 /* MSDOS installations frequently remove lib-src, but we still
340 must set installation-directory, or else info won't find
341 its files (it uses the value of installation-directory). */
342 tem
= Fexpand_file_name (build_string ("info"), dir
);
343 info_exists
= Ffile_exists_p (tem
);
348 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
350 tem
= Fexpand_file_name (build_string ("etc"), dir
);
351 etc_exists
= Ffile_exists_p (tem
);
352 if (!NILP (etc_exists
))
354 Vinstallation_directory
355 = Ffile_name_as_directory (dir
);
360 /* See if dir's parent contains those subdirs. */
361 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
362 lib_src_exists
= Ffile_exists_p (tem
);
366 /* See the MSDOS commentary above. */
367 tem
= Fexpand_file_name (build_string ("../info"), dir
);
368 info_exists
= Ffile_exists_p (tem
);
373 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
375 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
376 etc_exists
= Ffile_exists_p (tem
);
377 if (!NILP (etc_exists
))
379 tem
= Fexpand_file_name (build_string (".."), dir
);
380 Vinstallation_directory
381 = Ffile_name_as_directory (tem
);
386 /* If the Emacs executable is actually a link,
387 next try the dir that the link points into. */
388 tem
= Ffile_symlink_p (name
);
391 name
= Fexpand_file_name (tem
, dir
);
392 dir
= Ffile_name_directory (name
);
399 Vcommand_line_args
= Qnil
;
401 for (i
= argc
- 1; i
>= 0; i
--)
403 if (i
== 0 || i
> skip_args
)
405 = Fcons (build_string (argv
[i
]), Vcommand_line_args
);
408 unbind_to (count
, Qnil
);
411 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
412 "Return the program name that was used to run Emacs.\n\
413 Any directory names are omitted.")
416 return Fcopy_sequence (Vinvocation_name
);
419 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
421 "Return the directory name in which the Emacs executable was located")
424 return Fcopy_sequence (Vinvocation_directory
);
429 #ifdef LINK_CRTL_SHARE
430 #ifdef SHARABLE_LIB_BUG
431 extern noshare
char **environ
;
432 #endif /* SHARABLE_LIB_BUG */
433 #endif /* LINK_CRTL_SHARE */
437 /* A valid but unlikely value for the TZ environment value.
438 It is OK (though a bit slower) if the user actually chooses this value. */
439 static char dump_tz
[] = "UtC0";
442 #ifndef ORDINARY_LINK
443 /* We don't include crtbegin.o and crtend.o in the link,
444 so these functions and variables might be missed.
445 Provide dummy definitions to avoid error.
446 (We don't have any real constructors or destructors.) */
448 #ifndef GCC_CTORS_IN_LIBC
451 __do_global_ctors_aux ()
455 /* Linux has a bug in its library; avoid an error. */
457 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
459 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
460 #endif /* GCC_CTORS_IN_LIBC */
463 #endif /* __GNUC__ */
464 #endif /* ORDINARY_LINK */
466 /* Test whether the next argument in ARGV matches SSTR or a prefix of
467 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
468 (the argument is supposed to have a value) store in *VALPTR either
469 the next argument or the portion of this one after the equal sign.
470 ARGV is read starting at position *SKIPPTR; this index is advanced
471 by the number of arguments used.
473 Too bad we can't just use getopt for all of this, but we don't have
474 enough information to do it right. */
477 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
490 /* Don't access argv[argc]; give up in advance. */
491 if (argc
<= *skipptr
+ 1)
494 arg
= argv
[*skipptr
+1];
497 if (strcmp (arg
, sstr
) == 0)
501 *valptr
= argv
[*skipptr
+2];
508 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
509 ? p
- arg
: strlen (arg
));
510 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
512 else if (valptr
== NULL
)
523 else if (argv
[*skipptr
+2] != NULL
)
525 *valptr
= argv
[*skipptr
+2];
536 main (argc
, argv
, envp
)
541 char stack_bottom_variable
;
545 #ifdef HAVE_SETRLIMIT
549 #ifdef LINUX_SBRK_BUG
553 #ifdef DOUG_LEA_MALLOC
556 malloc_set_state (malloc_state_ptr
);
557 free (malloc_state_ptr
);
562 #ifdef RUN_TIME_REMAP
564 run_time_remap (argv
[0]);
567 sort_args (argc
, argv
);
569 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
))
572 tem
= Fsymbol_value (intern ("emacs-version"));
575 fprintf (stderr
, "Invalid value of `emacs-version'\n");
580 printf ("GNU Emacs %s\n", XSTRING (tem
)->data
);
581 printf ("Copyright (C) 1997 Free Software Foundation, Inc.\n");
582 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
583 printf ("You may redistribute copies of Emacs\n");
584 printf ("under the terms of the GNU General Public License.\n");
585 printf ("For more information about these matters, ");
586 printf ("see the files named COPYING.\n");
591 /* Map in shared memory, if we are using that. */
593 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
596 /* The shared memory was just restored, which clobbered this. */
602 /* The shared memory was just restored, which clobbered this. */
609 extern int malloc_cookie
;
610 /* This helps out unexnext.c. */
612 if (malloc_jumpstart (malloc_cookie
) != 0)
613 printf ("malloc jumpstart failed!\n");
618 /* If -map specified, map the data file in */
621 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &mapin_file
, &skip_args
))
625 #ifdef LINK_CRTL_SHARE
626 #ifdef SHARABLE_LIB_BUG
627 /* Bletcherous shared libraries! */
629 stdin
= fdopen (0, "r");
631 stdout
= fdopen (1, "w");
633 stderr
= fdopen (2, "w");
636 #endif /* SHARABLE_LIB_BUG */
637 #endif /* LINK_CRTL_SHARE */
640 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
641 /* Extend the stack space available.
642 Don't do that if dumping, since some systems (e.g. DJGPP)
643 might define a smaller stack limit at that time. */
646 && (!noninteractive
|| initialized
)
648 && !getrlimit (RLIMIT_STACK
, &rlim
))
651 extern int re_max_failures
;
652 /* Approximate the amount regex.c needs per unit of re_max_failures. */
653 int ratio
= 20 * sizeof (char *);
654 /* Then add 33% to cover the size of the smaller stacks that regex.c
655 successively allocates and discards, on its way to the maximum. */
657 /* Add in some extra to cover
658 what we're likely to use for other reasons. */
659 newlim
= re_max_failures
* ratio
+ 200000;
661 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
662 stack allocation routine for new process that the allocation
663 fails if stack limit is not on page boundary. So, round up the
664 new limit to page boundary. */
665 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
667 if (newlim
> rlim
.rlim_max
)
669 newlim
= rlim
.rlim_max
;
670 /* Don't let regex.c overflow the stack we have. */
671 re_max_failures
= (newlim
- 200000) / ratio
;
673 if (rlim
.rlim_cur
< newlim
)
674 rlim
.rlim_cur
= newlim
;
676 setrlimit (RLIMIT_STACK
, &rlim
);
678 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
680 /* Record (approximately) where the stack begins. */
681 stack_bottom
= &stack_bottom_variable
;
683 #ifdef USG_SHARED_LIBRARIES
685 brk ((void *)bss_end
);
690 #ifndef SYSTEM_MALLOC
693 /* Arrange to get warning messages as memory fills up. */
694 memory_warnings (0, malloc_warning
);
696 /* Arrange to disable interrupt input while malloc and friends are
698 uninterrupt_malloc ();
700 #endif /* not SYSTEM_MALLOC */
703 /* We do all file input/output as binary files. When we need to translate
704 newlines, we do that manually. */
708 if (!isatty (fileno (stdin
)))
709 setmode (fileno (stdin
), O_BINARY
);
710 if (!isatty (fileno (stdout
)))
713 setmode (fileno (stdout
), O_BINARY
);
715 #else /* not __DJGPP__ >= 2 */
716 (stdin
)->_flag
&= ~_IOTEXT
;
717 (stdout
)->_flag
&= ~_IOTEXT
;
718 (stderr
)->_flag
&= ~_IOTEXT
;
719 #endif /* not __DJGPP__ >= 2 */
722 #ifdef SET_EMACS_PRIORITY
724 nice (emacs_priority
);
726 #endif /* SET_EMACS_PRIORITY */
728 #ifdef EXTRA_INITIALIZE
732 inhibit_window_system
= 0;
734 /* --unibyte requests that we set up to do everything with single-byte
735 buffers and strings. We need to handle this before calling
736 init_lread, init_editfns and other places that generate Lisp strings
737 from text in the environment. */
738 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
))
741 symbol
= intern ("default-enable-multibyte-characters");
743 Fset_default (symbol
, Qnil
);
746 /* Handle the -t switch, which specifies filename to use as terminal */
749 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
754 result
= open (term
, O_RDWR
, 2 );
757 char *errstring
= strerror (errno
);
758 fprintf (stderr
, "emacs: %s: %s\n", term
, errstring
);
764 fprintf (stderr
, "emacs: %s: not a tty\n", term
);
767 fprintf (stderr
, "Using %s\n", term
);
768 #ifdef HAVE_WINDOW_SYSTEM
769 inhibit_window_system
= 1; /* -t => -nw */
773 if (argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
774 inhibit_window_system
= 1;
776 /* Handle the -batch switch, which means don't do interactive display. */
778 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
781 /* Handle the --help option, which gives a usage message.. */
782 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
785 Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
786 [-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
787 [--version] [--no-site-file]\n\
788 [-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
789 [+linenum] file-to-visit [--kill]\n\
790 Report bugs to bug-gnu-emacs@prep.ai.mit.edu. First, please see\n\
791 the Bugs section of the Emacs manual or the file BUGS.\n", argv
[0]);
795 #ifdef HAVE_X_WINDOWS
796 /* Stupid kludge to catch command-line display spec. We can't
797 handle this argument entirely in window system dependent code
798 because we don't even know which window system dependent code
799 to run until we've recognized this argument. */
801 char *displayname
= 0;
803 int count_before
= skip_args
;
805 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
807 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
810 /* If we have the form --display=NAME,
811 convert it into -d name.
812 This requires inserting a new element into argv. */
813 if (displayname
!= 0 && skip_args
- count_before
== 1)
815 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
818 for (j
= 0; j
< count_before
+ 1; j
++)
820 new[count_before
+ 1] = "-d";
821 new[count_before
+ 2] = displayname
;
822 for (j
= count_before
+ 2; j
<argc
; j
++)
823 new[j
+ 1] = argv
[j
];
827 /* Change --display to -d, when its arg is separate. */
828 else if (displayname
!= 0 && skip_args
> count_before
829 && argv
[count_before
+ 1][1] == '-')
830 argv
[count_before
+ 1] = "-d";
832 /* Don't actually discard this arg. */
833 skip_args
= count_before
;
837 if (! noninteractive
)
842 inherited_pgroup
= EMACS_GETPGRP (0);
843 setpgrp (0, getpid ());
846 #if defined (USG5) && defined (INTERRUPT_INPUT)
856 /* Don't catch SIGHUP if dumping. */
863 sigblock (sigmask (SIGHUP
));
864 /* In --batch mode, don't catch SIGHUP if already ignored.
865 That makes nohup work. */
867 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
868 signal (SIGHUP
, fatal_error_signal
);
869 sigunblock (sigmask (SIGHUP
));
874 ! noninteractive
|| initialized
880 /* Don't catch these signals in batch mode if dumping.
881 On some machines, this sets static data that would make
882 signal fail to work right when the dumped Emacs is run. */
883 signal (SIGQUIT
, fatal_error_signal
);
884 signal (SIGILL
, fatal_error_signal
);
885 signal (SIGTRAP
, fatal_error_signal
);
887 signal (SIGUSR1
, handle_USR1_signal
);
889 signal (SIGUSR2
, handle_USR2_signal
);
893 signal (SIGABRT
, fatal_error_signal
);
896 signal (SIGHWE
, fatal_error_signal
);
899 signal (SIGPRE
, fatal_error_signal
);
902 signal (SIGORE
, fatal_error_signal
);
905 signal (SIGUME
, fatal_error_signal
);
908 signal (SIGDLK
, fatal_error_signal
);
911 signal (SIGCPULIM
, fatal_error_signal
);
914 /* This is missing on some systems - OS/2, for example. */
915 signal (SIGIOT
, fatal_error_signal
);
918 signal (SIGEMT
, fatal_error_signal
);
920 signal (SIGFPE
, fatal_error_signal
);
922 signal (SIGBUS
, fatal_error_signal
);
924 signal (SIGSEGV
, fatal_error_signal
);
926 signal (SIGSYS
, fatal_error_signal
);
928 signal (SIGTERM
, fatal_error_signal
);
930 signal (SIGXCPU
, fatal_error_signal
);
933 signal (SIGXFSZ
, fatal_error_signal
);
937 /* This just means available memory is getting low. */
938 signal (SIGDANGER
, memory_warning_signal
);
942 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
943 signal (SIGXCPU
, fatal_error_signal
);
945 signal (SIGIOINT
, fatal_error_signal
);
947 signal (SIGGRANT
, fatal_error_signal
);
948 signal (SIGRETRACT
, fatal_error_signal
);
949 signal (SIGSOUND
, fatal_error_signal
);
950 signal (SIGMSG
, fatal_error_signal
);
954 noninteractive1
= noninteractive
;
956 /* Perform basic initializations (not merely interning symbols) */
963 init_charset_once ();
965 init_syntax_once (); /* Create standard syntax table. */
966 init_category_once (); /* Create standard category table. */
967 /* Must be done before init_buffer */
968 init_casetab_once ();
969 init_buffer_once (); /* Create buffer table and some buffers */
970 init_minibuf_once (); /* Create list of minibuffers */
971 /* Must precede init_window_once */
972 init_window_once (); /* Init the window system */
978 running_asynch_code
= 0;
981 /* Call early 'cause init_environment needs it. */
983 /* Set defaults for several environment variables. */
985 init_environment (argc
, argv
, skip_args
);
991 /* Initialize environment from registry settings. */
993 init_ntproc (); /* must precede init_editfns */
996 /* egetenv is a pretty low-level facility, which may get called in
997 many circumstances; it seems flimsy to put off initializing it
998 until calling init_callproc. */
999 set_process_environment ();
1000 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1001 if this is not done. Do it after set_process_environment so that we
1002 don't pollute Vprocess_environment. */
1007 init_buffer (); /* Init default directory of main buffer */
1009 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1010 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1014 /* Erase any pre-dump messages in the message log, to avoid confusion */
1015 Lisp_Object old_log_max
;
1016 old_log_max
= Vmessage_log_max
;
1017 XSETFASTINT (Vmessage_log_max
, 0);
1018 message_dolog ("", 0, 1, 0);
1019 Vmessage_log_max
= old_log_max
;
1022 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1025 if (!noninteractive
)
1028 init_vms_input ();/* init_display calls get_frame_size, that needs this */
1030 init_display (); /* Determine terminal type. init_sys_modes uses results */
1032 init_keyboard (); /* This too must precede init_sys_modes */
1034 init_vmsproc (); /* And this too. */
1036 init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
1040 #ifdef LISP_FLOAT_TYPE
1048 /* Intern the names of all standard functions and variables; define standard keys */
1052 /* The basic levels of Lisp must come first */
1053 /* And data must come first of all
1054 for the sake of symbols like error-message */
1061 syms_of_floatfns ();
1065 syms_of_bytecode ();
1067 syms_of_casefiddle ();
1069 syms_of_callproc ();
1070 syms_of_category ();
1074 #ifndef NO_DIR_LIBRARY
1076 #endif /* not NO_DIR_LIBRARY */
1082 syms_of_coding (); /* This should be after syms_of_fileio. */
1083 #ifdef CLASH_DETECTION
1084 syms_of_filelock ();
1085 #endif /* CLASH_DETECTION */
1088 syms_of_keyboard ();
1093 syms_of_mocklisp ();
1101 /* Only defined if Emacs is compiled with USE_TEXT_PROPERTIES */
1102 syms_of_textprop ();
1108 #endif /* WINDOWSNT */
1111 #ifdef HAVE_X_WINDOWS
1118 #endif /* HAVE_X_WINDOWS */
1128 syms_of_w32faces ();
1129 syms_of_w32select ();
1131 #endif /* HAVE_NTGUI */
1141 keys_of_casefiddle ();
1144 keys_of_keyboard ();
1155 /* Handle -l loadup-and-dump, args passed by Makefile. */
1156 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1157 Vtop_level
= Fcons (intern ("load"),
1158 Fcons (build_string (file
), Qnil
));
1160 /* Unless next switch is -nl, load "loadup.el" first thing. */
1161 if (!argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
))
1162 Vtop_level
= Fcons (intern ("load"),
1163 Fcons (build_string ("loadup.el"), Qnil
));
1164 #endif /* CANNOT_DUMP */
1171 /* If the execution TZ happens to be the same as the dump TZ,
1172 change it to some other value and then change it back,
1173 to force the underlying implementation to reload the TZ info.
1174 This is needed on implementations that load TZ info from files,
1175 since the TZ file contents may differ between dump and execution. */
1176 char *tz
= getenv ("TZ");
1177 if (tz
&& !strcmp (tz
, dump_tz
))
1187 /* Gerd Moellmann <gerd@acm.org> says this makes profiling work on
1188 FreeBSD. It might work on some other systems too.
1189 Give it a try and tell me if it works on your system. */
1194 extern void _mcleanup ();
1196 extern Lisp_Object
Fredraw_frame ();
1198 /* This uses Fredraw_frame because that function
1199 comes first in the Emacs executable.
1200 It might be better to use something that gives
1201 the start of the text segment, but start_of_text
1202 is not defined on all systems now. */
1203 monstartup (Fredraw_frame
, &etext
);
1212 #ifdef LOCALTIME_CACHE
1213 /* Some versions of localtime have a bug. They cache the value of the time
1214 zone rather than looking it up every time. Since localtime() is
1215 called to bolt the undumping time into the undumped emacs, this
1216 results in localtime ignoring the TZ environment variable.
1217 This flushes the new TZ value into localtime. */
1219 #endif /* defined (LOCALTIME_CACHE) */
1221 /* Enter editor command loop. This never returns. */
1226 /* Sort the args so we can find the most important ones
1227 at the beginning of argv. */
1229 /* First, here's a table of all the standard options. */
1231 struct standard_args
1239 struct standard_args standard_args
[] =
1241 { "-version", "--version", 110, 0 },
1242 { "-help", "--help", 110, 0 },
1243 { "-nl", "--no-shared-memory", 100, 0 },
1245 { "-map", "--map-data", 100, 0 },
1247 { "-unibyte", "--unibyte", 95, 0 },
1248 { "-t", "--terminal", 90, 1 },
1249 { "-d", "--display", 80, 1 },
1250 { "-display", 0, 80, 1 },
1251 { "-nw", "--no-windows", 70, 0 },
1252 { "-batch", "--batch", 60, 0 },
1253 { "-q", "--no-init-file", 50, 0 },
1254 { "-no-init-file", 0, 50, 0 },
1255 { "-no-site-file", "--no-site-file", 40, 0 },
1256 { "-u", "--user", 30, 1 },
1257 { "-user", 0, 30, 1 },
1258 { "-debug-init", "--debug-init", 20, 0 },
1259 { "-i", "--icon-type", 15, 0 },
1260 { "-itype", 0, 15, 0 },
1261 { "-iconic", "--iconic", 15, 0 },
1262 { "-bg", "--background-color", 10, 1 },
1263 { "-background", 0, 10, 1 },
1264 { "-fg", "--foreground-color", 10, 1 },
1265 { "-foreground", 0, 10, 1 },
1266 { "-bd", "--border-color", 10, 1 },
1267 { "-bw", "--border-width", 10, 1 },
1268 { "-ib", "--internal-border", 10, 1 },
1269 { "-ms", "--mouse-color", 10, 1 },
1270 { "-cr", "--cursor-color", 10, 1 },
1271 { "-fn", "--font", 10, 1 },
1272 { "-font", 0, 10, 1 },
1273 { "-g", "--geometry", 10, 1 },
1274 { "-geometry", 0, 10, 1 },
1275 { "-T", "--title", 10, 1 },
1276 { "-title", 0, 10, 1 },
1277 { "-name", "--name", 10, 1 },
1278 { "-xrm", "--xrm", 10, 1 },
1279 { "-r", "--reverse-video", 5, 0 },
1281 { "-reverse", 0, 5, 0 },
1282 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1283 { "-vb", "--vertical-scroll-bars", 5, 0 },
1284 /* These have the same priority as ordinary file name args,
1285 so they are not reordered with respect to those. */
1286 { "-L", "--directory", 0, 1 },
1287 { "-directory", 0, 0, 1 },
1288 { "-l", "--load", 0, 1 },
1289 { "-load", 0, 0, 1 },
1290 { "-f", "--funcall", 0, 1 },
1291 { "-funcall", 0, 0, 1 },
1292 { "-eval", "--eval", 0, 1 },
1293 { "-find-file", "--find-file", 0, 1 },
1294 { "-visit", "--visit", 0, 1 },
1295 { "-insert", "--insert", 0, 1 },
1296 /* This should be processed after ordinary file name args and the like. */
1297 { "-kill", "--kill", -10, 0 },
1300 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1301 so that the highest priority ones come first.
1302 Do not change the order of elements of equal priority.
1303 If an option takes an argument, keep it and its argument together. */
1306 sort_args (argc
, argv
)
1310 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1311 /* For each element of argv,
1312 the corresponding element of options is:
1313 0 for an option that takes no arguments,
1314 1 for an option that takes one argument, etc.
1315 -1 for an ordinary non-option argument. */
1316 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1317 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1321 int end_of_options
= argc
;
1323 /* Categorize all the options,
1324 and figure out which argv elts are option arguments. */
1325 for (from
= 1; from
< argc
; from
++)
1329 if (argv
[from
][0] == '-')
1334 /* If we have found "--", don't consider
1335 any more arguments as options. */
1336 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1338 /* Leave the "--", and everything following it, at the end. */
1339 for (; from
< argc
; from
++)
1341 priority
[from
] = -100;
1347 /* Look for a match with a known old-fashioned option. */
1348 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1349 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1351 options
[from
] = standard_args
[i
].nargs
;
1352 priority
[from
] = standard_args
[i
].priority
;
1353 if (from
+ standard_args
[i
].nargs
>= argc
)
1354 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1355 from
+= standard_args
[i
].nargs
;
1359 /* Look for a match with a known long option.
1360 MATCH is -1 if no match so far, -2 if two or more matches so far,
1361 >= 0 (the table index of the match) if just one match so far. */
1362 if (argv
[from
][1] == '-')
1365 thislen
= strlen (argv
[from
]);
1366 equals
= index (argv
[from
], '=');
1368 thislen
= equals
- argv
[from
];
1371 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1372 if (standard_args
[i
].longname
1373 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1382 /* If we found exactly one match, use that. */
1385 options
[from
] = standard_args
[match
].nargs
;
1386 priority
[from
] = standard_args
[match
].priority
;
1387 /* If --OPTION=VALUE syntax is used,
1388 this option uses just one argv element. */
1391 if (from
+ options
[from
] >= argc
)
1392 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1393 from
+= options
[from
];
1400 /* Copy the arguments, in order of decreasing priority, to NEW. */
1405 int best_priority
= -9999;
1407 /* Find the highest priority remaining option.
1408 If several have equal priority, take the first of them. */
1409 for (from
= 1; from
< argc
; from
++)
1411 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
1413 best_priority
= priority
[from
];
1416 /* Skip option arguments--they are tied to the options. */
1417 if (options
[from
] > 0)
1418 from
+= options
[from
];
1424 /* Copy the highest priority remaining option, with its args, to NEW. */
1425 new[to
++] = argv
[best
];
1426 for (i
= 0; i
< options
[best
]; i
++)
1427 new[to
++] = argv
[best
+ i
+ 1];
1429 /* Clear out this option in ARGV. */
1431 for (i
= 0; i
< options
[best
]; i
++)
1432 argv
[best
+ i
+ 1] = 0;
1435 bcopy (new, argv
, sizeof (char *) * argc
);
1442 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
1443 "Exit the Emacs job and kill it.\n\
1444 If ARG is an integer, return ARG as the exit program code.\n\
1445 If ARG is a string, stuff it as keyboard input.\n\n\
1446 The value of `kill-emacs-hook', if not void,\n\
1447 is a list of functions (of no args),\n\
1448 all of which are called before Emacs is actually killed.")
1452 Lisp_Object hook
, hook1
;
1454 struct gcpro gcpro1
;
1461 if (!NILP (Vrun_hooks
) && !noninteractive
)
1462 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
1466 /* Is it really necessary to do this deassign
1467 when we are going to exit anyway? */
1472 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
1474 /* If we have an auto-save list file,
1475 kill it because we are exiting Emacs deliberately (not crashing).
1476 Do it after shut_down_emacs, which does an auto-save. */
1477 if (STRINGP (Vauto_save_list_file_name
))
1478 unlink (XSTRING (Vauto_save_list_file_name
)->data
);
1480 exit (INTEGERP (arg
) ? XINT (arg
)
1491 /* Perform an orderly shutdown of Emacs. Autosave any modified
1492 buffers, kill any child processes, clean up the terminal modes (if
1493 we're in the foreground), and other stuff like that. Don't perform
1494 any redisplay; this may be called when Emacs is shutting down in
1495 the background, or after its X connection has died.
1497 If SIG is a signal number, print a message for it.
1499 This is called by fatal signal handlers, X protocol error handlers,
1503 shut_down_emacs (sig
, no_x
, stuff
)
1507 /* Prevent running of hooks from now on. */
1510 /* If we are controlling the terminal, reset terminal modes */
1511 #ifdef EMACS_HAVE_TTY_PGRP
1513 int pgrp
= EMACS_GETPGRP (0);
1516 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
1521 if (sig
&& sig
!= SIGTERM
)
1522 fprintf (stderr
, "Fatal error (%d).", sig
);
1530 stuff_buffered_input (stuff
);
1532 kill_buffer_processes (Qnil
);
1533 Fdo_auto_save (Qt
, Qnil
);
1535 #ifdef CLASH_DETECTION
1536 unlock_all_files ();
1540 kill_vms_processes ();
1543 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
1544 #ifdef HAVE_X_WINDOWS
1545 /* It's not safe to call intern here. Maybe we are crashing. */
1546 if (!noninteractive
&& SYMBOLP (Vwindow_system
)
1547 && XSYMBOL (Vwindow_system
)->name
->size
== 1
1548 && XSYMBOL (Vwindow_system
)->name
->data
[0] == 'x'
1550 Fx_close_current_connection ();
1551 #endif /* HAVE_X_WINDOWS */
1555 /* There is a tendency for a SIGIO signal to arrive within exit,
1556 and cause a SIGHUP because the input descriptor is already closed. */
1558 signal (SIGIO
, SIG_IGN
);
1576 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
1577 "Dump current state of Emacs into data file FILENAME.\n\
1578 This function exists on systems that use HAVE_SHM.")
1580 Lisp_Object filename
;
1582 extern char my_edata
[];
1585 CHECK_STRING (filename
, 0);
1586 filename
= Fexpand_file_name (filename
, Qnil
);
1589 Vpurify_flag
= Qnil
;
1592 /* Tell malloc where start of impure now is */
1593 /* Also arrange for warnings when nearly out of space. */
1594 #ifndef SYSTEM_MALLOC
1595 memory_warnings (my_edata
, malloc_warning
);
1597 map_out_data (XSTRING (filename
)->data
);
1604 #else /* not HAVE_SHM */
1606 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
1607 "Dump current state of Emacs into executable file FILENAME.\n\
1608 Take symbols from SYMFILE (presumably the file you executed to run Emacs).\n\
1609 This is used in the file `loadup.el' when building Emacs.\n\
1611 You must run Emacs in batch mode in order to dump it.")
1613 Lisp_Object filename
, symfile
;
1615 extern char my_edata
[];
1618 int count
= specpdl_ptr
- specpdl
;
1620 if (! noninteractive
)
1621 error ("Dumping Emacs works only in batch mode");
1623 /* Bind `command-line-processed' to nil before dumping,
1624 so that the dumped Emacs will process its command line
1625 and set up to work with X windows if appropriate. */
1626 symbol
= intern ("command-line-process");
1627 specbind (symbol
, Qnil
);
1629 CHECK_STRING (filename
, 0);
1630 filename
= Fexpand_file_name (filename
, Qnil
);
1631 if (!NILP (symfile
))
1633 CHECK_STRING (symfile
, 0);
1634 if (XSTRING (symfile
)->size
)
1635 symfile
= Fexpand_file_name (symfile
, Qnil
);
1639 Vpurify_flag
= Qnil
;
1642 set_time_zone_rule (dump_tz
);
1643 #ifndef LOCALTIME_CACHE
1644 /* Force a tz reload, since set_time_zone_rule doesn't. */
1651 mapout_data (XSTRING (filename
)->data
);
1653 /* Tell malloc where start of impure now is */
1654 /* Also arrange for warnings when nearly out of space. */
1655 #ifndef SYSTEM_MALLOC
1657 /* On Windows, this was done before dumping, and that once suffices.
1658 Meanwhile, my_edata is not valid on Windows. */
1659 memory_warnings (my_edata
, malloc_warning
);
1660 #endif /* not WINDOWSNT */
1662 #ifdef DOUG_LEA_MALLOC
1663 malloc_state_ptr
= malloc_get_state ();
1665 unexec (XSTRING (filename
)->data
,
1666 !NILP (symfile
) ? XSTRING (symfile
)->data
: 0, my_edata
, 0, 0);
1667 #ifdef DOUG_LEA_MALLOC
1668 free (malloc_state_ptr
);
1670 #endif /* not VMS */
1674 return unbind_to (count
, Qnil
);
1677 #endif /* not HAVE_SHM */
1679 #endif /* not CANNOT_DUMP */
1686 decode_env_path (evarname
, defalt
)
1687 char *evarname
, *defalt
;
1689 register char *path
, *p
;
1690 Lisp_Object lpath
, element
, tem
;
1692 /* It's okay to use getenv here, because this function is only used
1693 to initialize variables when Emacs starts up, and isn't called
1696 path
= (char *) getenv (evarname
);
1702 /* Ensure values from the environment use the proper directory separator. */
1705 p
= alloca (strlen (path
) + 1);
1709 if ('/' == DIRECTORY_SEP
)
1710 dostounix_filename (path
);
1712 unixtodos_filename (path
);
1718 p
= index (path
, SEPCHAR
);
1719 if (!p
) p
= path
+ strlen (path
);
1720 element
= (p
- path
? make_string (path
, p
- path
)
1721 : build_string ("."));
1723 /* Add /: to the front of the name
1724 if it would otherwise be treated as magic. */
1725 tem
= Ffind_file_name_handler (element
, Qt
);
1727 element
= concat2 (build_string ("/:"), element
);
1729 lpath
= Fcons (element
, lpath
);
1735 return Fnreverse (lpath
);
1740 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
1741 staticpro (&Qfile_name_handler_alist
);
1745 defsubr (&Sdump_emacs_data
);
1747 defsubr (&Sdump_emacs
);
1751 defsubr (&Skill_emacs
);
1753 defsubr (&Sinvocation_name
);
1754 defsubr (&Sinvocation_directory
);
1756 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
1757 "Args passed by shell to Emacs, as a list of strings.");
1759 DEFVAR_LISP ("system-type", &Vsystem_type
,
1760 "Value is symbol indicating type of operating system you are using.");
1761 Vsystem_type
= intern (SYSTEM_TYPE
);
1763 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
1764 "Value is string indicating configuration Emacs was built for.");
1765 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
1767 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
1768 "String containing the configuration options Emacs was built with.");
1769 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
1771 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
1772 "Non-nil means Emacs is running without interactive terminal.");
1774 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
1775 "Hook to be run whenever kill-emacs is called.\n\
1776 Since kill-emacs may be invoked when the terminal is disconnected (or\n\
1777 in other similar situations), functions placed on this hook should not\n\
1778 expect to be able to interact with the user. To ask for confirmation,\n\
1779 see `kill-emacs-query-functions' instead.");
1780 Vkill_emacs_hook
= Qnil
;
1783 DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook
,
1784 "Hook to be run whenever emacs recieves a USR1 signal");
1785 Vsignal_USR1_hook
= Qnil
;
1787 DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook
,
1788 "Hook to be run whenever emacs recieves a USR2 signal");
1789 Vsignal_USR2_hook
= Qnil
;
1794 DEFVAR_INT ("emacs-priority", &emacs_priority
,
1795 "Priority for Emacs to run at.\n\
1796 This value is effective only if set before Emacs is dumped,\n\
1797 and only if the Emacs executable is installed with setuid to permit\n\
1798 it to change priority. (Emacs sets its uid back to the real uid.)\n\
1799 Currently, you need to define SET_EMACS_PRIORITY in `config.h'\n\
1800 before you compile Emacs, to enable the code for this feature.");
1803 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
1804 "The program name that was used to run Emacs.\n\
1805 Any directory names are omitted.");
1807 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
1808 "The directory in which the Emacs executable was found, to run it.\n\
1809 The value is nil if that directory's name is not known.");
1811 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
1812 "A directory within which to look for the `lib-src' and `etc' directories.\n\
1813 This is non-nil when we can't find those directories in their standard\n\
1814 installed locations, but we can find them\n\
1815 near where the Emacs executable was found.");
1816 Vinstallation_directory
= Qnil
;