/* Fully extensible Emacs, running on Unix, intended for GNU.
- Copyright (C) 1985, 86, 87, 93, 94, 95 Free Software Foundation, Inc.
+ Copyright (C) 1985,86,87,93,94,95,97,1998 Free Software Foundation, Inc.
This file is part of GNU Emacs.
#include "lisp.h"
#include "commands.h"
#include "intervals.h"
+#include "buffer.h"
#include "systty.h"
#include "blockinput.h"
#include "syssignal.h"
#include "process.h"
+#include "keyboard.h"
#ifdef HAVE_SETRLIMIT
#include <sys/time.h>
/* Hook run by `kill-emacs' before it does really anything. */
Lisp_Object Vkill_emacs_hook;
+#ifdef SIGUSR1
+/* Hooks for signal USR1 and USR2 handing */
+Lisp_Object Vsignal_USR1_hook;
+#ifdef SIGUSR2
+Lisp_Object Vsignal_USR2_hook;
+#endif
+#endif
+
+/* Search path separator. */
+Lisp_Object Vpath_separator;
+
/* Set nonzero after Emacs has started up the first time.
Prevents reinitialization of the Lisp world and keymaps
on subsequent starts. */
int initial_argc;
static void sort_args ();
+void syms_of_emacs ();
\f
/* Signal code for the fatal signal that was received */
int fatal_error_code;
/* Nonzero if handling a fatal error already */
int fatal_error_in_progress;
+#ifdef SIGUSR1
+int SIGUSR1_in_progress=0;
+SIGTYPE
+handle_USR1_signal (sig)
+ int sig;
+{
+ if (! SIGUSR1_in_progress)
+ {
+ SIGUSR1_in_progress = 1;
+
+ if (!NILP (Vrun_hooks) && !noninteractive)
+ call1 (Vrun_hooks, intern ("signal-USR1-hook"));
+
+ SIGUSR1_in_progress = 0;
+ }
+}
+
+#ifdef SIGUSR2
+int SIGUSR2_in_progress=0;
+SIGTYPE
+handle_USR2_signal (sig)
+ int sig;
+{
+ if (! SIGUSR2_in_progress)
+ {
+ SIGUSR2_in_progress = 1;
+
+ if (!NILP (Vrun_hooks) && !noninteractive)
+ call1 (Vrun_hooks, intern ("signal-USR2-hook"));
+
+ SIGUSR2_in_progress = 0;
+ }
+}
+#endif
+#endif
+
/* Handle bus errors, illegal instruction, etc. */
SIGTYPE
fatal_error_signal (sig)
force_auto_save_soon ();
}
#endif
+
+/* We define abort, rather than using it from the library,
+ so that GDB can return from a breakpoint here.
+ MSDOS has its own definition on msdos.c */
+
+#if ! defined (DOS_NT) && ! defined (NO_ABORT)
+void
+abort ()
+{
+ kill (getpid (), SIGABRT);
+ /* This shouldn't be executed, but it prevents a warning. */
+ exit (1);
+}
+#endif
+
\f
/* Code for dealing with Lisp access to the Unix command line */
-static
+static void
init_cmdargs (argc, argv, skip_args)
int argc;
char **argv;
(We don't have any real constructors or destructors.) */
#ifdef __GNUC__
#ifndef GCC_CTORS_IN_LIBC
-__do_global_ctors ()
+void __do_global_ctors ()
{}
-__do_global_ctors_aux ()
+void __do_global_ctors_aux ()
{}
-__do_global_dtors ()
+void __do_global_dtors ()
{}
/* Linux has a bug in its library; avoid an error. */
#ifndef LINUX
#endif
char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
#endif /* GCC_CTORS_IN_LIBC */
-__main ()
+void __main ()
{}
#endif /* __GNUC__ */
#endif /* ORDINARY_LINK */
}
/* ARGSUSED */
+int
main (argc, argv, envp)
int argc;
char **argv;
char stack_bottom_variable;
int skip_args = 0;
extern int errno;
- extern sys_nerr;
+ extern int sys_nerr;
#ifdef HAVE_SETRLIMIT
struct rlimit rlim;
#endif
#ifdef DOUG_LEA_MALLOC
if (initialized)
{
+ extern void r_alloc_reinit ();
malloc_set_state (malloc_state_ptr);
free (malloc_state_ptr);
r_alloc_reinit ();
sort_args (argc, argv);
- if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args))
+ if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)
+ /* We don't know the version number unless this is a dumped Emacs.
+ So ignore --version otherwise. */
+ && initialized)
{
Lisp_Object tem;
tem = Fsymbol_value (intern ("emacs-version"));
else
{
printf ("GNU Emacs %s\n", XSTRING (tem)->data);
- printf ("Copyright (C) 1996 Free Software Foundation, Inc.\n");
+ printf ("Copyright (C) 1998 Free Software Foundation, Inc.\n");
printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
printf ("You may redistribute copies of Emacs\n");
printf ("under the terms of the GNU General Public License.\n");
{
long newlim;
extern int re_max_failures;
- /* Approximate the amount regex.c needs, plus some more. */
- newlim = re_max_failures * 2 * 20 * sizeof (char *);
+ /* Approximate the amount regex.c needs per unit of re_max_failures. */
+ int ratio = 20 * sizeof (char *);
+ /* Then add 33% to cover the size of the smaller stacks that regex.c
+ successively allocates and discards, on its way to the maximum. */
+ ratio += ratio / 3;
+ /* Add in some extra to cover
+ what we're likely to use for other reasons. */
+ newlim = re_max_failures * ratio + 200000;
#ifdef __NetBSD__
/* NetBSD (at least NetBSD 1.2G and former) has a bug in its
stack allocation routine for new process that the allocation
if (newlim > rlim.rlim_max)
{
newlim = rlim.rlim_max;
- /* Don't let regex.c overflow the stack. */
- re_max_failures = newlim / (2 * 20 * sizeof (char *));
+ /* Don't let regex.c overflow the stack we have. */
+ re_max_failures = (newlim - 200000) / ratio;
}
if (rlim.rlim_cur < newlim)
rlim.rlim_cur = newlim;
printf ("\
Usage: %s [-t term] [--terminal term] [-nw] [--no-windows] [--batch]\n\
[-q] [--no-init-file] [-u user] [--user user] [--debug-init]\n\
- [--version] [--no-site-file]\n\
+ [--unibyte] [--multibyte] [--version] [--no-site-file]\n\
[-f func] [--funcall func] [-l file] [--load file] [--insert file]\n\
[+linenum] file-to-visit [--kill]\n\
-Report bugs to bug-gnu-emacs@prep.ai.mit.edu. First, please see\n\
+Report bugs to bug-gnu-emacs@gnu.org. First, please see\n\
the Bugs section of the Emacs manual or the file BUGS.\n", argv[0]);
exit (0);
}
signal (SIGQUIT, fatal_error_signal);
signal (SIGILL, fatal_error_signal);
signal (SIGTRAP, fatal_error_signal);
+#ifdef SIGUSR1
+ signal (SIGUSR1, handle_USR1_signal);
+#ifdef SIGUSR2
+ signal (SIGUSR2, handle_USR2_signal);
+#endif
+#endif
#ifdef SIGABRT
signal (SIGABRT, fatal_error_signal);
#endif
init_data ();
running_asynch_code = 0;
+ /* Handle --unibyte and the EMACS_UNIBYTE envvar,
+ but not while dumping. */
+ if (
+#ifndef CANNOT_DUMP
+ ! noninteractive || initialized
+#else
+ 1
+#endif
+ )
+ {
+ int inhibit_unibyte = 0;
+
+ /* --multibyte overrides EMACS_UNIBYTE. */
+ if (argmatch (argv, argc, "-no-unibyte", "--no-unibyte", 4, NULL, &skip_args)
+ || argmatch (argv, argc, "-multibyte", "--multibyte", 4, NULL, &skip_args))
+ inhibit_unibyte = 1;
+
+ /* --unibyte requests that we set up to do everything with single-byte
+ buffers and strings. We need to handle this before calling
+ init_lread, init_editfns and other places that generate Lisp strings
+ from text in the environment. */
+ if (argmatch (argv, argc, "-unibyte", "--unibyte", 4, NULL, &skip_args)
+ || argmatch (argv, argc, "-no-multibyte", "--no-multibyte", 4, NULL, &skip_args)
+ || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte))
+ {
+ Lisp_Object old_log_max;
+ Lisp_Object symbol, tail;
+
+ symbol = intern ("default-enable-multibyte-characters");
+ Fset (symbol, Qnil);
+
+ if (initialized)
+ {
+ /* Erase pre-dump messages in *Messages* now so no abort. */
+ old_log_max = Vmessage_log_max;
+ XSETFASTINT (Vmessage_log_max, 0);
+ message_dolog ("", 0, 1, 0);
+ Vmessage_log_max = old_log_max;
+ }
+
+ for (tail = Vbuffer_alist; CONSP (tail);
+ tail = XCONS (tail)->cdr)
+ {
+ Lisp_Object buffer;
+
+ buffer = Fcdr (XCONS (tail)->car);
+ /* Verify that all buffers are empty now, as they
+ ought to be. */
+ if (BUF_Z (XBUFFER (buffer)) > BUF_BEG (XBUFFER (buffer)))
+ abort ();
+ /* It is safe to do this crudely in an empty buffer. */
+ XBUFFER (buffer)->enable_multibyte_characters = Qnil;
+ }
+ }
+ }
+
#ifdef MSDOS
/* Call early 'cause init_environment needs it. */
init_dosfns ();
Lisp_Object old_log_max;
old_log_max = Vmessage_log_max;
XSETFASTINT (Vmessage_log_max, 0);
- message_dolog ("", 0, 1);
+ message_dolog ("", 0, 1, 0);
Vmessage_log_max = old_log_max;
}
init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
init_lread ();
- if (!noninteractive)
- {
-#ifdef VMS
- init_vms_input ();/* init_display calls get_frame_size, that needs this */
-#endif /* VMS */
- init_display (); /* Determine terminal type. init_sys_modes uses results */
- }
- init_keyboard (); /* This too must precede init_sys_modes */
-#ifdef VMS
- init_vmsproc (); /* And this too. */
-#endif /* VMS */
- init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
- init_xdisp ();
- init_macros ();
- init_editfns ();
-#ifdef LISP_FLOAT_TYPE
- init_floatfns ();
-#endif
-#ifdef VMS
- init_vmsfns ();
-#endif /* VMS */
- init_process ();
-
-/* Intern the names of all standard functions and variables; define standard keys */
+ /* Intern the names of all standard functions and variables;
+ define standard keys. */
if (!initialized)
{
keys_of_frame ();
}
+ if (!noninteractive)
+ {
+#ifdef VMS
+ init_vms_input ();/* init_display calls get_frame_size, that needs this */
+#endif /* VMS */
+ init_display (); /* Determine terminal type. init_sys_modes uses results */
+ }
+ init_keyboard (); /* This too must precede init_sys_modes */
+#ifdef VMS
+ init_vmsproc (); /* And this too. */
+#endif /* VMS */
+ init_sys_modes (); /* Init system terminal modes (RAW or CBREAK, etc.) */
+ init_xdisp ();
+ init_macros ();
+ init_editfns ();
+#ifdef LISP_FLOAT_TYPE
+ init_floatfns ();
+#endif
+#ifdef VMS
+ init_vmsfns ();
+#endif /* VMS */
+ init_process ();
+
if (!initialized)
{
char *file;
- /* Handle -l loadup-and-dump, args passed by Makefile. */
+ /* Handle -l loadup, args passed by Makefile. */
if (argmatch (argv, argc, "-l", "--load", 3, &file, &skip_args))
Vtop_level = Fcons (intern ("load"),
Fcons (build_string (file), Qnil));
{ "-d", "--display", 80, 1 },
{ "-display", 0, 80, 1 },
{ "-nw", "--no-windows", 70, 0 },
+ { "-no-unibyte", "--no-unibyte", 66, 0 },
+ { "-multibyte", "--multibyte", 66, 0 },
+ { "-unibyte", "--unibyte", 65, 0 },
+ { "-no-multibyte", "--no-multibyte", 65, 0 },
{ "-batch", "--batch", 60, 0 },
{ "-q", "--no-init-file", 50, 0 },
{ "-no-init-file", 0, 50, 0 },
#ifdef WINDOWSNT
term_ntproc ();
#endif
+
+#ifdef MSDOS
+ dos_cleanup ();
+#endif
}
return Fnreverse (lpath);
}
+void
syms_of_emacs ()
{
Qfile_name_handler_alist = intern ("file-name-handler-alist");
see `kill-emacs-query-functions' instead.");
Vkill_emacs_hook = Qnil;
+#ifdef SIGUSR1
+ DEFVAR_LISP ("signal-USR1-hook", &Vsignal_USR1_hook,
+ "Hook to be run whenever emacs receives a USR1 signal");
+ Vsignal_USR1_hook = Qnil;
+#ifdef SIGUSR2
+ DEFVAR_LISP ("signal-USR2-hook", &Vsignal_USR2_hook,
+ "Hook to be run whenever emacs receives a USR2 signal");
+ Vsignal_USR2_hook = Qnil;
+#endif
+#endif
+
+
DEFVAR_INT ("emacs-priority", &emacs_priority,
"Priority for Emacs to run at.\n\
This value is effective only if set before Emacs is dumped,\n\
before you compile Emacs, to enable the code for this feature.");
emacs_priority = 0;
+ DEFVAR_LISP ("path-separator", &Vpath_separator,
+ "The directory separator in search paths, as a string.");
+ {
+ char c = SEPCHAR;
+ Vpath_separator = make_string (&c, 1);
+ }
+
DEFVAR_LISP ("invocation-name", &Vinvocation_name,
"The program name that was used to run Emacs.\n\
Any directory names are omitted.");
HCoop / bpt / emacs.git / blobdiff