1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2013 Free Software
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
22 #define SYSTIME_INLINE EXTERN_INLINE
29 #endif /* HAVE_PWD_H */
34 #include <ignore-value.h>
38 #include "sysselect.h"
39 #include "blockinput.h"
41 #if defined DARWIN_OS || defined __FreeBSD__
42 # include <sys/sysctl.h>
47 #include <sys/resource.h>
53 #define write sys_write
55 #define STDERR_FILENO fileno(GetStdHandle(STD_ERROR_HANDLE))
58 #endif /* not WINDOWSNT */
60 #include <sys/types.h>
64 /* Get SI_SRPC_DOMAIN, if it is available. */
65 #ifdef HAVE_SYS_SYSTEMINFO_H
66 #include <sys/systeminfo.h>
69 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
73 #include <sys/param.h>
80 #ifdef HAVE_SYS_UTSNAME_H
81 #include <sys/utsname.h>
83 #endif /* HAVE_SYS_UTSNAME_H */
88 #include "termhooks.h"
91 #include "dispextern.h"
93 #include "cm.h" /* for reset_sys_modes */
97 /* In process.h which conflicts with the local copy. */
99 int _cdecl
_spawnlp (int, const char *, const char *, ...);
100 int _cdecl
_getpid (void);
103 #include "syssignal.h"
106 static int emacs_get_tty (int, struct emacs_tty
*);
107 static int emacs_set_tty (int, struct emacs_tty
*, int);
109 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
111 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
114 /* Declare here, including term.h is problematic on some systems. */
115 extern void tputs (const char *, int, int (*)(int));
117 static const int baud_convert
[] =
119 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
120 1800, 2400, 4800, 9600, 19200, 38400
124 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
126 /* Return the current working directory. Returns NULL on errors.
127 Any other returned value must be freed with free. This is used
128 only when get_current_dir_name is not defined on the system. */
130 get_current_dir_name (void)
133 char *pwd
= getenv ("PWD");
134 struct stat dotstat
, pwdstat
;
135 /* If PWD is accurate, use it instead of calling getcwd. PWD is
136 sometimes a nicer name, and using it may avoid a fatal error if a
137 parent directory is searchable but not readable. */
139 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
140 && stat (pwd
, &pwdstat
) == 0
141 && stat (".", &dotstat
) == 0
142 && dotstat
.st_ino
== pwdstat
.st_ino
143 && dotstat
.st_dev
== pwdstat
.st_dev
145 && strlen (pwd
) < MAXPATHLEN
149 buf
= malloc (strlen (pwd
) + 1);
156 size_t buf_size
= 1024;
157 buf
= malloc (buf_size
);
162 if (getcwd (buf
, buf_size
) == buf
)
166 int tmp_errno
= errno
;
172 buf
= realloc (buf
, buf_size
);
182 /* Discard pending input on all input descriptors. */
185 discard_tty_input (void)
188 struct emacs_tty buf
;
193 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
194 while (dos_keyread () != -1)
196 #else /* not MSDOS */
198 struct tty_display_info
*tty
;
199 for (tty
= tty_list
; tty
; tty
= tty
->next
)
201 if (tty
->input
) /* Is the device suspended? */
203 emacs_get_tty (fileno (tty
->input
), &buf
);
204 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
208 #endif /* not MSDOS */
209 #endif /* not WINDOWSNT */
215 /* Arrange for character C to be read as the next input from
217 XXX What if we have multiple ttys?
223 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
226 /* Should perhaps error if in batch mode */
228 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
229 #else /* no TIOCSTI */
230 error ("Cannot stuff terminal input characters in this version of Unix");
231 #endif /* no TIOCSTI */
237 init_baud_rate (int fd
)
247 #else /* not DOS_NT */
252 emacs_ospeed
= cfgetospeed (&sg
);
253 #endif /* not DOS_NT */
256 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
257 ? baud_convert
[emacs_ospeed
] : 9600);
266 /* Wait for the subprocess with process id CHILD to terminate or change status.
267 CHILD must be a child process that has not been reaped.
268 If STATUS is non-null, store the waitpid-style exit status into *STATUS
269 and tell wait_reading_process_output that it needs to look around.
270 Use waitpid-style OPTIONS when waiting.
271 If INTERRUPTIBLE, this function is interruptible by a signal.
273 Return CHILD if successful, 0 if no status is available;
274 the latter is possible only when options & NOHANG. */
276 get_child_status (pid_t child
, int *status
, int options
, bool interruptible
)
280 /* Invoke waitpid only with a known process ID; do not invoke
281 waitpid with a nonpositive argument. Otherwise, Emacs might
282 reap an unwanted process by mistake. For example, invoking
283 waitpid (-1, ...) can mess up glib by reaping glib's subprocesses,
284 so that another thread running glib won't find them. */
287 while ((pid
= waitpid (child
, status
, options
)) < 0)
289 /* Check that CHILD is a child process that has not been reaped,
290 and that STATUS and OPTIONS are valid. Otherwise abort,
291 as continuing after this internal error could cause Emacs to
292 become confused and kill innocent-victim processes. */
296 /* Note: the MS-Windows emulation of waitpid calls QUIT
302 /* If successful and status is requested, tell wait_reading_process_output
303 that it needs to wake up and look around. */
304 if (pid
&& status
&& input_available_clear_time
)
305 *input_available_clear_time
= make_emacs_time (0, 0);
310 /* Wait for the subprocess with process id CHILD to terminate.
311 CHILD must be a child process that has not been reaped.
312 If STATUS is non-null, store the waitpid-style exit status into *STATUS
313 and tell wait_reading_process_output that it needs to look around.
314 If INTERRUPTIBLE, this function is interruptible by a signal. */
316 wait_for_termination (pid_t child
, int *status
, bool interruptible
)
318 get_child_status (child
, status
, 0, interruptible
);
321 /* Report whether the subprocess with process id CHILD has changed status.
322 Termination counts as a change of status.
323 CHILD must be a child process that has not been reaped.
324 If STATUS is non-null, store the waitpid-style exit status into *STATUS
325 and tell wait_reading_process_output that it needs to look around.
326 Use waitpid-style OPTIONS to check status, but do not wait.
328 Return CHILD if successful, 0 if no status is available because
329 the process's state has not changed. */
331 child_status_changed (pid_t child
, int *status
, int options
)
333 return get_child_status (child
, status
, WNOHANG
| options
, 0);
337 * flush any pending output
338 * (may flush input as well; it does not matter the way we use it)
342 flush_pending_output (int channel
)
344 /* FIXME: maybe this function should be removed */
347 /* Set up the terminal at the other end of a pseudo-terminal that
348 we will be controlling an inferior through.
349 It should not echo or do line-editing, since that is done
350 in Emacs. No padding needed for insertion into an Emacs buffer. */
353 child_setup_tty (int out
)
358 emacs_get_tty (out
, &s
);
359 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
360 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
362 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
363 Some versions of GNU Hurd do not have FFDLY? */
365 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
366 /* No output delays */
368 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
369 /* No output delays */
372 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
373 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
375 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
378 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
381 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
383 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
384 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
385 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
386 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
389 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
392 #ifdef SIGNALS_VIA_CHARACTERS
393 /* the QUIT and INTR character are used in process_send_signal
394 so set them here to something useful. */
395 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
396 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
397 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
398 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
399 #endif /* not SIGNALS_VIA_CHARACTERS */
402 /* Also, PTY overloads NUL and BREAK.
403 don't ignore break, but don't signal either, so it looks like NUL. */
404 s
.main
.c_iflag
&= ~IGNBRK
;
405 s
.main
.c_iflag
&= ~BRKINT
;
406 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
407 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
408 would force it to 0377. That looks like duplicated code. */
409 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
412 /* We originally enabled ICANON (and set VEOF to 04), and then had
413 process.c send additional EOF chars to flush the output when faced
414 with long lines, but this leads to weird effects when the
415 subprocess has disabled ICANON and ends up seeing those spurious
416 extra EOFs. So we don't send EOFs any more in
417 process.c:send_process. First we tried to disable ICANON by
418 default, so if a subsprocess sets up ICANON, it's his problem (or
419 the Elisp package that talks to it) to deal with lines that are
420 too long. But this disables some features, such as the ability
421 to send EOF signals. So we re-enabled ICANON but there is no
422 more "send eof to flush" going on (which is wrong and unportable
423 in itself). The correct way to handle too much output is to
424 buffer what could not be written and then write it again when
425 select returns ok for writing. This has it own set of
426 problems. Write is now asynchronous, is that a problem? How much
427 do we buffer, and what do we do when that limit is reached? */
429 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
430 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
431 #if 0 /* These settings only apply to non-ICANON mode. */
432 s
.main
.c_cc
[VMIN
] = 1;
433 s
.main
.c_cc
[VTIME
] = 0;
436 emacs_set_tty (out
, &s
, 0);
437 #endif /* not WINDOWSNT */
439 #endif /* not MSDOS */
442 /* Record a signal code and the action for it. */
446 struct sigaction action
;
449 static void save_signal_handlers (struct save_signal
*);
450 static void restore_signal_handlers (struct save_signal
*);
452 /* Suspend the Emacs process; give terminal to its superior. */
460 /* On a system where suspending is not implemented,
461 instead fork a subshell and let it talk directly to the terminal
468 /* Fork a subshell. */
473 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
475 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
479 struct save_signal saved_handlers
[5];
481 unsigned char *volatile str_volatile
= 0;
485 saved_handlers
[0].code
= SIGINT
;
486 saved_handlers
[1].code
= SIGQUIT
;
487 saved_handlers
[2].code
= SIGTERM
;
489 saved_handlers
[3].code
= SIGIO
;
490 saved_handlers
[4].code
= 0;
492 saved_handlers
[3].code
= 0;
495 /* Mentioning current_buffer->buffer would mean including buffer.h,
496 which somehow wedges the hp compiler. So instead... */
498 dir
= intern ("default-directory");
499 if (NILP (Fboundp (dir
)))
501 dir
= Fsymbol_value (dir
);
505 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
506 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
508 memcpy (str
, SDATA (dir
), len
);
509 if (str
[len
- 1] != '/') str
[len
++] = '/';
515 save_signal_handlers (saved_handlers
);
519 error ("Can't spawn subshell");
526 #ifdef DOS_NT /* MW, Aug 1993 */
527 getcwd (oldwd
, sizeof oldwd
);
529 sh
= egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
532 sh
= egetenv ("SHELL");
536 /* Use our buffer's default directory for the subshell. */
538 if (str
&& chdir ((char *) str
) != 0)
541 ignore_value (write (1, "Can't chdir\n", 12));
546 close_process_descs (); /* Close Emacs's pipes/ptys */
548 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
550 char *epwd
= getenv ("PWD");
551 char old_pwd
[MAXPATHLEN
+1+4];
553 /* If PWD is set, pass it with corrected value. */
556 strcpy (old_pwd
, epwd
);
557 if (str
[len
- 1] == '/')
559 setenv ("PWD", str
, 1);
562 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
564 putenv (old_pwd
); /* restore previous value */
566 #else /* not MSDOS */
568 /* Waits for process completion */
569 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
570 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
572 write (1, "Can't execute subshell", 22);
573 #else /* not WINDOWSNT */
574 execlp (sh
, sh
, (char *) 0);
575 ignore_value (write (1, "Can't execute subshell", 22));
577 #endif /* not WINDOWSNT */
578 #endif /* not MSDOS */
581 /* Do this now if we did not do it before. */
583 save_signal_handlers (saved_handlers
);
587 wait_for_termination (pid
, &status
, 0);
589 restore_signal_handlers (saved_handlers
);
593 save_signal_handlers (struct save_signal
*saved_handlers
)
595 while (saved_handlers
->code
)
597 struct sigaction action
;
598 emacs_sigaction_init (&action
, SIG_IGN
);
599 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
605 restore_signal_handlers (struct save_signal
*saved_handlers
)
607 while (saved_handlers
->code
)
609 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
615 static int old_fcntl_flags
[MAXDESC
];
622 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
623 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
624 interrupts_deferred
= 0;
632 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
645 sigemptyset (&unblocked
);
647 sigaddset (&unblocked
, SIGWINCH
);
649 sigaddset (&unblocked
, SIGIO
);
650 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
652 interrupts_deferred
= 0;
657 unrequest_sigio (void)
665 sigemptyset (&blocked
);
667 sigaddset (&blocked
, SIGWINCH
);
669 sigaddset (&blocked
, SIGIO
);
670 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
671 interrupts_deferred
= 1;
679 signal (SIGIO
, SIG_IGN
);
684 /* Saving and restoring the process group of Emacs's terminal. */
686 /* The process group of which Emacs was a member when it initially
689 If Emacs was in its own process group (i.e. inherited_pgroup ==
690 getpid ()), then we know we're running under a shell with job
691 control (Emacs would never be run as part of a pipeline).
694 If Emacs was not in its own process group, then we know we're
695 running under a shell (or a caller) that doesn't know how to
696 separate itself from Emacs (like sh). Emacs must be in its own
697 process group in order to receive SIGIO correctly. In this
698 situation, we put ourselves in our own pgroup, forcibly set the
699 tty's pgroup to our pgroup, and make sure to restore and reinstate
700 the tty's pgroup just like any other terminal setting. If
701 inherited_group was not the tty's pgroup, then we'll get a
702 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
703 it goes foreground in the future, which is what should happen. */
705 static pid_t inherited_pgroup
;
708 init_foreground_group (void)
710 pid_t pgrp
= getpgrp ();
711 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
714 /* Block and unblock SIGTTOU. */
717 block_tty_out_signal (void)
721 sigemptyset (&blocked
);
722 sigaddset (&blocked
, SIGTTOU
);
723 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
728 unblock_tty_out_signal (void)
731 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
735 /* Safely set a controlling terminal FD's process group to PGID.
736 If we are not in the foreground already, POSIX requires tcsetpgrp
737 to deliver a SIGTTOU signal, which would stop us. This is an
738 annoyance, so temporarily ignore the signal.
740 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
741 skip all this unless SIGTTOU is defined. */
743 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
747 block_tty_out_signal ();
748 tcsetpgrp (fd
, pgid
);
749 unblock_tty_out_signal ();
754 /* Split off the foreground process group to Emacs alone. When we are
755 in the foreground, but not started in our own process group,
756 redirect the tty device handle FD to point to our own process
757 group. FD must be the file descriptor of the controlling tty. */
759 narrow_foreground_group (int fd
)
761 if (inherited_pgroup
&& setpgid (0, 0) == 0)
762 tcsetpgrp_without_stopping (fd
, getpid ());
765 /* Set the tty to our original foreground group. */
767 widen_foreground_group (int fd
)
769 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
770 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
773 /* Getting and setting emacs_tty structures. */
775 /* Set *TC to the parameters associated with the terminal FD.
776 Return zero if all's well, or -1 if we ran into an error we
777 couldn't deal with. */
779 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
781 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
783 /* We have those nifty POSIX tcmumbleattr functions. */
784 memset (&settings
->main
, 0, sizeof (settings
->main
));
785 if (tcgetattr (fd
, &settings
->main
) < 0)
789 /* We have survived the tempest. */
794 /* Set the parameters of the tty on FD according to the contents of
795 *SETTINGS. If FLUSHP is non-zero, we discard input.
796 Return 0 if all went well, and -1 if anything failed. */
799 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
801 /* Set the primary parameters - baud rate, character size, etcetera. */
804 /* We have those nifty POSIX tcmumbleattr functions.
805 William J. Smith <wjs@wiis.wang.com> writes:
806 "POSIX 1003.1 defines tcsetattr to return success if it was
807 able to perform any of the requested actions, even if some
808 of the requested actions could not be performed.
809 We must read settings back to ensure tty setup properly.
810 AIX requires this to keep tty from hanging occasionally." */
811 /* This make sure that we don't loop indefinitely in here. */
812 for (i
= 0 ; i
< 10 ; i
++)
813 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
824 memset (&new, 0, sizeof (new));
825 /* Get the current settings, and see if they're what we asked for. */
826 tcgetattr (fd
, &new);
827 /* We cannot use memcmp on the whole structure here because under
828 * aix386 the termios structure has some reserved field that may
831 if ( new.c_iflag
== settings
->main
.c_iflag
832 && new.c_oflag
== settings
->main
.c_oflag
833 && new.c_cflag
== settings
->main
.c_cflag
834 && new.c_lflag
== settings
->main
.c_lflag
835 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
842 /* We have survived the tempest. */
849 static int old_fcntl_owner
[MAXDESC
];
850 #endif /* F_SETOWN */
852 /* This may also be defined in stdio,
853 but if so, this does no harm,
854 and using the same name avoids wasting the other one's space. */
857 unsigned char _sobuf
[BUFSIZ
+8];
862 /* Initialize the terminal mode on all tty devices that are currently
866 init_all_sys_modes (void)
868 struct tty_display_info
*tty
;
869 for (tty
= tty_list
; tty
; tty
= tty
->next
)
870 init_sys_modes (tty
);
873 /* Initialize the terminal mode on the given tty device. */
876 init_sys_modes (struct tty_display_info
*tty_out
)
878 struct emacs_tty tty
;
879 Lisp_Object terminal
;
881 Vtty_erase_char
= Qnil
;
886 if (!tty_out
->output
)
887 return; /* The tty is suspended. */
889 narrow_foreground_group (fileno (tty_out
->input
));
891 if (! tty_out
->old_tty
)
892 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
894 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
896 tty
= *tty_out
->old_tty
;
898 #if !defined (DOS_NT)
899 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
901 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
902 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
903 #ifdef INLCR /* I'm just being cautious,
904 since I can't check how widespread INLCR is--rms. */
905 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
908 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
910 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
911 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
913 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
915 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
916 if (tty_out
->flow_control
)
918 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
920 tty
.main
.c_iflag
&= ~IXANY
;
924 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
925 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
927 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
929 if (tty_out
->meta_key
)
931 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
932 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
936 XSETTERMINAL(terminal
, tty_out
->terminal
);
937 if (!NILP (Fcontrolling_tty_p (terminal
)))
939 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
940 /* Set up C-g for both SIGQUIT and SIGINT.
941 We don't know which we will get, but we handle both alike
942 so which one it really gives us does not matter. */
943 tty
.main
.c_cc
[VQUIT
] = quit_char
;
947 /* We normally don't get interrupt or quit signals from tty
948 devices other than our controlling terminal; therefore,
949 we must handle C-g as normal input. Unfortunately, this
950 means that the interrupt and quit feature must be
951 disabled on secondary ttys, or we would not even see the
954 Note that even though emacsclient could have special code
955 to pass SIGINT to Emacs, we should _not_ enable
956 interrupt/quit keys for emacsclient frames. This means
957 that we can't break out of loops in C code from a
958 secondary tty frame, but we can always decide what
959 display the C-g came from, which is more important from a
960 usability point of view. (Consider the case when two
961 people work together using the same Emacs instance.) */
962 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
963 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
965 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
966 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
968 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
973 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
976 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
978 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
979 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
982 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
985 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
986 #endif /* VREPRINT */
988 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
991 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
992 #endif /* VDISCARD */
994 if (tty_out
->flow_control
)
997 tty
.main
.c_cc
[VSTART
] = '\021';
1000 tty
.main
.c_cc
[VSTOP
] = '\023';
1006 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1009 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1014 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1015 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1016 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1017 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1018 if (tty_out
->flow_control
)
1021 tty
.main
.c_cc
[VSTART
] = '\021';
1024 tty
.main
.c_cc
[VSTOP
] = '\023';
1027 /* Also, PTY overloads NUL and BREAK.
1028 don't ignore break, but don't signal either, so it looks like NUL.
1029 This really serves a purpose only if running in an XTERM window
1030 or via TELNET or the like, but does no harm elsewhere. */
1031 tty
.main
.c_iflag
&= ~IGNBRK
;
1032 tty
.main
.c_iflag
&= ~BRKINT
;
1034 #endif /* not DOS_NT */
1036 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1037 if (!tty_out
->term_initted
)
1038 internal_terminal_init ();
1039 dos_ttraw (tty_out
);
1042 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1044 /* This code added to insure that, if flow-control is not to be used,
1045 we have an unlocked terminal at the start. */
1048 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1051 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1054 #if !defined (DOS_NT)
1056 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1061 if (interrupt_input
)
1063 old_fcntl_owner
[fileno (tty_out
->input
)] =
1064 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1065 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1066 init_sigio (fileno (tty_out
->input
));
1068 if (gpm_tty
== tty_out
)
1070 /* Arrange for mouse events to give us SIGIO signals. */
1071 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1072 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1073 init_sigio (gpm_fd
);
1075 #endif /* HAVE_GPM */
1077 #endif /* F_GETOWN */
1080 /* This symbol is defined on recent USG systems.
1081 Someone says without this call USG won't really buffer the file
1082 even with a call to setbuf. */
1083 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1085 setbuf (tty_out
->output
, (char *) _sobuf
);
1088 if (tty_out
->terminal
->set_terminal_modes_hook
)
1089 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1091 if (!tty_out
->term_initted
)
1093 Lisp_Object tail
, frame
;
1094 FOR_EACH_FRAME (tail
, frame
)
1096 /* XXX This needs to be revised. */
1097 if (FRAME_TERMCAP_P (XFRAME (frame
))
1098 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1099 init_frame_faces (XFRAME (frame
));
1103 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1105 /* We used to call "direct_output_forward_char(0)" here,
1106 but it's not clear why, since it may not do anything anyway. */
1110 Lisp_Object tail
, frame
;
1112 FOR_EACH_FRAME (tail
, frame
)
1114 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1115 || FRAME_MSDOS_P (XFRAME (frame
)))
1116 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1117 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1121 tty_out
->term_initted
= 1;
1124 /* Return nonzero if safe to use tabs in output.
1125 At the time this is called, init_sys_modes has not been done yet. */
1128 tabs_safe_p (int fd
)
1130 struct emacs_tty etty
;
1132 emacs_get_tty (fd
, &etty
);
1135 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1136 #else /* not TABDLY */
1138 #endif /* not TABDLY */
1144 /* Get terminal size from system.
1145 Store number of lines into *HEIGHTP and width into *WIDTHP.
1146 We store 0 if there's no valid information. */
1149 get_tty_size (int fd
, int *widthp
, int *heightp
)
1151 #if defined TIOCGWINSZ
1154 struct winsize size
;
1156 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1157 *widthp
= *heightp
= 0;
1160 *widthp
= size
.ws_col
;
1161 *heightp
= size
.ws_row
;
1164 #elif defined TIOCGSIZE
1166 /* SunOS - style. */
1167 struct ttysize size
;
1169 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1170 *widthp
= *heightp
= 0;
1173 *widthp
= size
.ts_cols
;
1174 *heightp
= size
.ts_lines
;
1177 #elif defined WINDOWSNT
1179 CONSOLE_SCREEN_BUFFER_INFO info
;
1180 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1182 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1183 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1186 *widthp
= *heightp
= 0;
1190 *widthp
= ScreenCols ();
1191 *heightp
= ScreenRows ();
1193 #else /* system doesn't know size */
1201 /* Set the logical window size associated with descriptor FD
1202 to HEIGHT and WIDTH. This is used mainly with ptys. */
1205 set_window_size (int fd
, int height
, int width
)
1210 struct winsize size
;
1211 size
.ws_row
= height
;
1212 size
.ws_col
= width
;
1214 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1215 return 0; /* error */
1222 /* SunOS - style. */
1223 struct ttysize size
;
1224 size
.ts_lines
= height
;
1225 size
.ts_cols
= width
;
1227 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1233 #endif /* not SunOS-style */
1234 #endif /* not BSD-style */
1239 /* Prepare all terminal devices for exiting Emacs. */
1242 reset_all_sys_modes (void)
1244 struct tty_display_info
*tty
;
1245 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1246 reset_sys_modes (tty
);
1249 /* Prepare the terminal for closing it; move the cursor to the
1250 bottom of the frame, turn off interrupt-driven I/O, etc. */
1253 reset_sys_modes (struct tty_display_info
*tty_out
)
1260 if (!tty_out
->term_initted
)
1263 if (!tty_out
->output
)
1264 return; /* The tty is suspended. */
1266 /* Go to and clear the last line of the terminal. */
1268 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1270 /* Code adapted from tty_clear_end_of_line. */
1271 if (tty_out
->TS_clr_line
)
1273 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1276 { /* have to do it the hard way */
1278 tty_turn_off_insert (tty_out
);
1280 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1282 fputc (' ', tty_out
->output
);
1286 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1287 fflush (tty_out
->output
);
1289 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1290 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1293 /* Avoid possible loss of output when changing terminal modes. */
1294 fsync (fileno (tty_out
->output
));
1299 if (interrupt_input
)
1301 reset_sigio (fileno (tty_out
->input
));
1302 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1303 old_fcntl_owner
[fileno (tty_out
->input
)]);
1305 #endif /* F_SETOWN */
1306 fcntl (fileno (tty_out
->input
), F_SETFL
,
1307 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1310 if (tty_out
->old_tty
)
1311 while (emacs_set_tty (fileno (tty_out
->input
),
1312 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1315 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1319 widen_foreground_group (fileno (tty_out
->input
));
1324 /* Set up the proper status flags for use of a pty. */
1329 /* I'm told that TOICREMOTE does not mean control chars
1330 "can't be sent" but rather that they don't have
1331 input-editing or signaling effects.
1332 That should be good, because we have other ways
1333 to do those things in Emacs.
1334 However, telnet mode seems not to work on 4.2.
1335 So TIOCREMOTE is turned off now. */
1337 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1338 will hang. In particular, the "timeout" feature (which
1339 causes a read to return if there is no data available)
1340 does this. Also it is known that telnet mode will hang
1341 in such a way that Emacs must be stopped (perhaps this
1342 is the same problem).
1344 If TIOCREMOTE is turned off, then there is a bug in
1345 hp-ux which sometimes loses data. Apparently the
1346 code which blocks the master process when the internal
1347 buffer fills up does not work. Other than this,
1348 though, everything else seems to work fine.
1350 Since the latter lossage is more benign, we may as well
1351 lose that way. -- cph */
1353 #if defined (UNIX98_PTYS)
1356 ioctl (fd
, FIONBIO
, &on
);
1361 #endif /* HAVE_PTYS */
1364 #include <sys/socket.h>
1366 #endif /* HAVE_SOCKETS */
1369 #ifndef HAVE_H_ERRNO
1372 #endif /* TRY_AGAIN */
1375 init_system_name (void)
1377 #ifndef HAVE_GETHOSTNAME
1380 Vsystem_name
= build_string (uts
.nodename
);
1381 #else /* HAVE_GETHOSTNAME */
1382 unsigned int hostname_size
= 256;
1383 char *hostname
= alloca (hostname_size
);
1385 /* Try to get the host name; if the buffer is too short, try
1386 again. Apparently, the only indication gethostname gives of
1387 whether the buffer was large enough is the presence or absence
1388 of a '\0' in the string. Eech. */
1391 gethostname (hostname
, hostname_size
- 1);
1392 hostname
[hostname_size
- 1] = '\0';
1394 /* Was the buffer large enough for the '\0'? */
1395 if (strlen (hostname
) < hostname_size
- 1)
1398 hostname_size
<<= 1;
1399 hostname
= alloca (hostname_size
);
1402 /* Turn the hostname into the official, fully-qualified hostname.
1403 Don't do this if we're going to dump; this can confuse system
1404 libraries on some machines and make the dumped emacs core dump. */
1407 #endif /* not CANNOT_DUMP */
1408 if (! strchr (hostname
, '.'))
1411 #ifdef HAVE_GETADDRINFO
1412 struct addrinfo
*res
;
1413 struct addrinfo hints
;
1416 memset (&hints
, 0, sizeof (hints
));
1417 hints
.ai_socktype
= SOCK_STREAM
;
1418 hints
.ai_flags
= AI_CANONNAME
;
1420 for (count
= 0;; count
++)
1422 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1423 || ret
!= EAI_AGAIN
)
1428 Fsleep_for (make_number (1), Qnil
);
1433 struct addrinfo
*it
= res
;
1436 char *fqdn
= it
->ai_canonname
;
1437 if (fqdn
&& strchr (fqdn
, '.')
1438 && strcmp (fqdn
, "localhost.localdomain") != 0)
1444 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1445 strcpy (hostname
, it
->ai_canonname
);
1449 #else /* !HAVE_GETADDRINFO */
1451 for (count
= 0;; count
++)
1457 hp
= gethostbyname (hostname
);
1459 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1466 Fsleep_for (make_number (1), Qnil
);
1471 char *fqdn
= (char *) hp
->h_name
;
1473 if (!strchr (fqdn
, '.'))
1475 /* We still don't have a fully qualified domain name.
1476 Try to find one in the list of alternate names */
1477 char **alias
= hp
->h_aliases
;
1479 && (!strchr (*alias
, '.')
1480 || !strcmp (*alias
, "localhost.localdomain")))
1487 #endif /* !HAVE_GETADDRINFO */
1489 #endif /* HAVE_SOCKETS */
1490 Vsystem_name
= build_string (hostname
);
1491 #endif /* HAVE_GETHOSTNAME */
1494 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1495 if (*p
== ' ' || *p
== '\t')
1500 sigset_t empty_mask
;
1502 static struct sigaction process_fatal_action
;
1505 emacs_sigaction_flags (void)
1508 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1509 'select') to reset their timeout on some platforms (e.g.,
1510 HP-UX 11), which is not what we want. Also, when Emacs is
1511 interactive, we don't want SA_RESTART because we need to poll
1512 for pending input so we need long-running syscalls to be interrupted
1513 after a signal that sets pending_signals.
1515 Non-interactive keyboard input goes through stdio, where we
1516 always want restartable system calls. */
1523 /* Store into *ACTION a signal action suitable for Emacs, with handler
1526 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1528 sigemptyset (&action
->sa_mask
);
1530 /* When handling a signal, block nonfatal system signals that are caught
1531 by Emacs. This makes race conditions less likely. */
1532 sigaddset (&action
->sa_mask
, SIGALRM
);
1533 sigaddset (&action
->sa_mask
, SIGCHLD
);
1535 sigaddset (&action
->sa_mask
, SIGDANGER
);
1537 #ifdef PROFILER_CPU_SUPPORT
1538 sigaddset (&action
->sa_mask
, SIGPROF
);
1541 sigaddset (&action
->sa_mask
, SIGWINCH
);
1543 if (! noninteractive
)
1545 sigaddset (&action
->sa_mask
, SIGINT
);
1546 sigaddset (&action
->sa_mask
, SIGQUIT
);
1548 sigaddset (&action
->sa_mask
, SIGIO
);
1552 if (! IEEE_FLOATING_POINT
)
1553 sigaddset (&action
->sa_mask
, SIGFPE
);
1555 action
->sa_handler
= handler
;
1556 action
->sa_flags
= emacs_sigaction_flags ();
1559 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1560 static pthread_t main_thread
;
1563 /* SIG has arrived at the current process. Deliver it to the main
1564 thread, which should handle it with HANDLER.
1566 If we are on the main thread, handle the signal SIG with HANDLER.
1567 Otherwise, redirect the signal to the main thread, blocking it from
1568 this thread. POSIX says any thread can receive a signal that is
1569 associated with a process, process group, or asynchronous event.
1570 On GNU/Linux that is not true, but for other systems (FreeBSD at
1573 deliver_process_signal (int sig
, signal_handler_t handler
)
1575 /* Preserve errno, to avoid race conditions with signal handlers that
1576 might change errno. Races can occur even in single-threaded hosts. */
1577 int old_errno
= errno
;
1579 bool on_main_thread
= true;
1580 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1581 if (! pthread_equal (pthread_self (), main_thread
))
1584 sigemptyset (&blocked
);
1585 sigaddset (&blocked
, sig
);
1586 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1587 pthread_kill (main_thread
, sig
);
1588 on_main_thread
= false;
1597 /* Static location to save a fatal backtrace in a thread.
1598 FIXME: If two subsidiary threads fail simultaneously, the resulting
1599 backtrace may be garbage. */
1600 enum { BACKTRACE_LIMIT_MAX
= 500 };
1601 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1602 static int thread_backtrace_npointers
;
1604 /* SIG has arrived at the current thread.
1605 If we are on the main thread, handle the signal SIG with HANDLER.
1606 Otherwise, this is a fatal error in the handling thread. */
1608 deliver_thread_signal (int sig
, signal_handler_t handler
)
1610 int old_errno
= errno
;
1612 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1613 if (! pthread_equal (pthread_self (), main_thread
))
1615 thread_backtrace_npointers
1616 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1617 sigaction (sig
, &process_fatal_action
, 0);
1618 pthread_kill (main_thread
, sig
);
1620 /* Avoid further damage while the main thread is exiting. */
1622 sigsuspend (&empty_mask
);
1630 #if !HAVE_DECL_SYS_SIGLIST
1632 # ifdef _sys_siglist
1633 # define sys_siglist _sys_siglist
1635 # define sys_siglist my_sys_siglist
1636 static char const *sys_siglist
[NSIG
];
1641 # define sys_siglist_entries _sys_nsig
1643 # define sys_siglist_entries NSIG
1646 /* Handle bus errors, invalid instruction, etc. */
1648 handle_fatal_signal (int sig
)
1650 terminate_due_to_signal (sig
, 40);
1654 deliver_fatal_signal (int sig
)
1656 deliver_process_signal (sig
, handle_fatal_signal
);
1660 deliver_fatal_thread_signal (int sig
)
1662 deliver_thread_signal (sig
, handle_fatal_signal
);
1665 static _Noreturn
void
1666 handle_arith_signal (int sig
)
1668 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1669 xsignal0 (Qarith_error
);
1673 deliver_arith_signal (int sig
)
1675 deliver_thread_signal (sig
, handle_arith_signal
);
1680 /* Handler for SIGDANGER. */
1682 handle_danger_signal (int sig
)
1684 malloc_warning ("Operating system warns that virtual memory is running low.\n");
1686 /* It might be unsafe to call do_auto_save now. */
1687 force_auto_save_soon ();
1691 deliver_danger_signal (int sig
)
1693 deliver_process_signal (sig
, handle_danger_signal
);
1697 /* Treat SIG as a terminating signal, unless it is already ignored and
1698 we are in --batch mode. Among other things, this makes nohup work. */
1700 maybe_fatal_sig (int sig
)
1702 bool catch_sig
= !noninteractive
;
1705 struct sigaction old_action
;
1706 sigaction (sig
, 0, &old_action
);
1707 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1710 sigaction (sig
, &process_fatal_action
, 0);
1714 init_signals (bool dumping
)
1716 struct sigaction thread_fatal_action
;
1717 struct sigaction action
;
1719 sigemptyset (&empty_mask
);
1721 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1722 main_thread
= pthread_self ();
1725 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1728 sys_siglist
[SIGABRT
] = "Aborted";
1730 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1732 sys_siglist
[SIGALRM
] = "Alarm clock";
1734 sys_siglist
[SIGBUS
] = "Bus error";
1736 sys_siglist
[SIGCHLD
] = "Child status changed";
1738 sys_siglist
[SIGCONT
] = "Continued";
1741 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1744 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1747 sys_siglist
[SIGEMT
] = "Emulation trap";
1749 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1751 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1754 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1756 sys_siglist
[SIGHUP
] = "Hangup";
1757 sys_siglist
[SIGILL
] = "Illegal instruction";
1758 sys_siglist
[SIGINT
] = "Interrupt";
1760 sys_siglist
[SIGIO
] = "I/O possible";
1763 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1766 sys_siglist
[SIGIOT
] = "IOT trap";
1768 sys_siglist
[SIGKILL
] = "Killed";
1770 sys_siglist
[SIGLOST
] = "Resource lost";
1773 sys_siglist
[SIGLWP
] = "SIGLWP";
1776 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1779 sys_siglist
[SIGWIND
] = "SIGPHONE";
1781 sys_siglist
[SIGPIPE
] = "Broken pipe";
1783 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1786 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1789 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1792 sys_siglist
[SIGPWR
] = "Power-fail restart";
1794 sys_siglist
[SIGQUIT
] = "Quit";
1796 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1799 sys_siglist
[SIGSAK
] = "Secure attention";
1801 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1803 sys_siglist
[SIGSOUND
] = "Sound completed";
1806 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1809 sys_siglist
[SIGSTP
] = "Stopped (user)";
1812 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1814 sys_siglist
[SIGTERM
] = "Terminated";
1816 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1819 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1822 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1825 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1828 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1831 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1834 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1837 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1840 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1843 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1846 sys_siglist
[SIGWINCH
] = "Window size changed";
1849 sys_siglist
[SIGWIND
] = "SIGWIND";
1852 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1855 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1858 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1860 /* Don't alter signal handlers if dumping. On some machines,
1861 changing signal handlers sets static data that would make signals
1862 fail to work right when the dumped Emacs is run. */
1866 sigfillset (&process_fatal_action
.sa_mask
);
1867 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1868 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1870 sigfillset (&thread_fatal_action
.sa_mask
);
1871 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1872 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1874 /* SIGINT may need special treatment on MS-Windows. See
1875 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1876 Please update the doc of kill-emacs, kill-emacs-hook, and
1877 NEWS if you change this. */
1879 maybe_fatal_sig (SIGHUP
);
1880 maybe_fatal_sig (SIGINT
);
1881 maybe_fatal_sig (SIGTERM
);
1883 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1884 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1885 to behave more like typical batch applications do. */
1886 if (! noninteractive
)
1887 signal (SIGPIPE
, SIG_IGN
);
1889 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1890 sigaction (SIGILL
, &thread_fatal_action
, 0);
1891 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1893 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1894 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1895 interpreter's floating point operations, so treat SIGFPE as an
1896 arith-error if it arises in the main thread. */
1897 if (IEEE_FLOATING_POINT
)
1898 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1901 emacs_sigaction_init (&action
, deliver_arith_signal
);
1902 sigaction (SIGFPE
, &action
, 0);
1906 add_user_signal (SIGUSR1
, "sigusr1");
1909 add_user_signal (SIGUSR2
, "sigusr2");
1911 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1913 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1916 sigaction (SIGORE
, &thread_fatal_action
, 0);
1919 sigaction (SIGUME
, &thread_fatal_action
, 0);
1922 sigaction (SIGDLK
, &process_fatal_action
, 0);
1925 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1928 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1931 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1934 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1936 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1938 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1940 sigaction (SIGTERM
, &process_fatal_action
, 0);
1942 signal (SIGPROF
, SIG_IGN
);
1945 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1948 sigaction (SIGXCPU
, &process_fatal_action
, 0);
1951 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1955 /* This just means available memory is getting low. */
1956 emacs_sigaction_init (&action
, deliver_danger_signal
);
1957 sigaction (SIGDANGER
, &action
, 0);
1960 /* AIX-specific signals. */
1962 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1965 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1968 sigaction (SIGMSG
, &process_fatal_action
, 0);
1971 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1974 sigaction (SIGSAK
, &process_fatal_action
, 0);
1977 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1980 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1990 /* Figure out how many bits the system's random number generator uses.
1991 `random' and `lrand48' are assumed to return 31 usable bits.
1992 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1993 so we'll shift it and treat it like the 15-bit USG `rand'. */
1997 # define RAND_BITS 31
1998 # else /* !HAVE_RANDOM */
1999 # ifdef HAVE_LRAND48
2000 # define RAND_BITS 31
2001 # define random lrand48
2002 # else /* !HAVE_LRAND48 */
2003 # define RAND_BITS 15
2004 # if RAND_MAX == 32767
2005 # define random rand
2006 # else /* RAND_MAX != 32767 */
2007 # if RAND_MAX == 2147483647
2008 # define random() (rand () >> 16)
2009 # else /* RAND_MAX != 2147483647 */
2011 # define random rand
2013 # define random() (rand () >> 16)
2015 # endif /* RAND_MAX != 2147483647 */
2016 # endif /* RAND_MAX != 32767 */
2017 # endif /* !HAVE_LRAND48 */
2018 # endif /* !HAVE_RANDOM */
2019 #endif /* !RAND_BITS */
2022 seed_random (void *seed
, ptrdiff_t seed_size
)
2024 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2025 unsigned int arg
= 0;
2029 unsigned char *argp
= (unsigned char *) &arg
;
2030 unsigned char *seedp
= seed
;
2032 for (i
= 0; i
< seed_size
; i
++)
2033 argp
[i
% sizeof arg
] ^= seedp
[i
];
2037 # ifdef HAVE_LRAND48
2048 EMACS_TIME t
= current_emacs_time ();
2049 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
2050 seed_random (&v
, sizeof v
);
2054 * Return a nonnegative random integer out of whatever we've got.
2055 * It contains enough bits to make a random (signed) Emacs fixnum.
2056 * This suffices even for a 64-bit architecture with a 15-bit rand.
2063 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2064 val
= (random () ^ (val
<< RAND_BITS
)
2065 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2066 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2067 return val
& INTMASK
;
2070 #ifndef HAVE_SNPRINTF
2071 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2073 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2075 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2076 ptrdiff_t nbytes
= size
- 1;
2081 va_start (ap
, format
);
2082 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2086 if (nbytes
== size
- 1)
2088 /* Calculate the length of the string that would have been created
2089 had the buffer been large enough. */
2090 char stackbuf
[4000];
2092 ptrdiff_t bsize
= sizeof stackbuf
;
2093 va_start (ap
, format
);
2094 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2100 if (INT_MAX
< nbytes
)
2113 /* If a backtrace is available, output the top lines of it to stderr.
2114 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2115 This function may be called from a signal handler, so it should
2116 not invoke async-unsafe functions like malloc. */
2118 emacs_backtrace (int backtrace_limit
)
2120 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2121 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2125 if (thread_backtrace_npointers
)
2127 buffer
= thread_backtrace_buffer
;
2128 npointers
= thread_backtrace_npointers
;
2132 buffer
= main_backtrace_buffer
;
2133 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2138 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
2139 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2140 if (bounded_limit
< npointers
)
2141 ignore_value (write (STDERR_FILENO
, "...\n", 4));
2149 terminate_due_to_signal (SIGABRT
, 40);
2154 emacs_open (const char *path
, int oflag
, int mode
)
2156 register int rtnval
;
2158 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2159 && (errno
== EINTR
))
2165 emacs_close (int fd
)
2168 register int rtnval
;
2170 while ((rtnval
= close (fd
)) == -1
2171 && (errno
== EINTR
))
2174 /* If close is interrupted SunOS 4.1 may or may not have closed the
2175 file descriptor. If it did the second close will fail with
2176 errno = EBADF. That means we have succeeded. */
2177 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2183 /* Maximum number of bytes to read or write in a single system call.
2184 This works around a serious bug in Linux kernels before 2.6.16; see
2185 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2186 It's likely to work around similar bugs in other operating systems, so do it
2187 on all platforms. Round INT_MAX down to a page size, with the conservative
2188 assumption that page sizes are at most 2**18 bytes (any kernel with a
2189 page size larger than that shouldn't have the bug). */
2190 #ifndef MAX_RW_COUNT
2191 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2194 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2195 Return the number of bytes read, which might be less than NBYTE.
2196 On error, set errno and return -1. */
2198 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
2200 register ssize_t rtnval
;
2202 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2203 passes a size that large to emacs_read. */
2205 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2206 && (errno
== EINTR
))
2211 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2212 or if a partial write occurs. Return the number of bytes written, setting
2213 errno if this is less than NBYTE. */
2215 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
2218 ptrdiff_t bytes_written
;
2224 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2230 /* I originally used `QUIT' but that might causes files to
2231 be truncated if you hit C-g in the middle of it. --Stef */
2232 if (pending_signals
)
2233 process_pending_signals ();
2242 bytes_written
+= rtnval
;
2245 return (bytes_written
);
2248 /* Return a struct timeval that is roughly equivalent to T.
2249 Use the least timeval not less than T.
2250 Return an extremal value if the result would overflow. */
2252 make_timeval (EMACS_TIME t
)
2255 tv
.tv_sec
= t
.tv_sec
;
2256 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2258 if (t
.tv_nsec
% 1000 != 0)
2260 if (tv
.tv_usec
< 999999)
2262 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2272 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2273 ATIME and MTIME, respectively.
2274 FD must be either negative -- in which case it is ignored --
2275 or a file descriptor that is open on FILE.
2276 If FD is nonnegative, then FILE can be NULL. */
2278 set_file_times (int fd
, const char *filename
,
2279 EMACS_TIME atime
, EMACS_TIME mtime
)
2281 struct timespec timespec
[2];
2282 timespec
[0] = atime
;
2283 timespec
[1] = mtime
;
2284 return fdutimens (fd
, filename
, timespec
);
2287 /* Like strsignal, except async-signal-safe, and this function typically
2288 returns a string in the C locale rather than the current locale. */
2290 safe_strsignal (int code
)
2292 char const *signame
= 0;
2294 if (0 <= code
&& code
< sys_siglist_entries
)
2295 signame
= sys_siglist
[code
];
2297 signame
= "Unknown signal";
2303 /* For make-serial-process */
2305 serial_open (char *port
)
2307 int fd
= emacs_open (port
, O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2310 error ("Could not open %s: %s",
2311 port
, emacs_strerror (errno
));
2314 ioctl (fd
, TIOCEXCL
, (char *) 0);
2320 #if !defined (HAVE_CFMAKERAW)
2321 /* Workaround for targets which are missing cfmakeraw. */
2322 /* Pasted from man page. */
2324 cfmakeraw (struct termios
*termios_p
)
2326 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2327 termios_p
->c_oflag
&= ~OPOST
;
2328 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2329 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2330 termios_p
->c_cflag
|= CS8
;
2332 #endif /* !defined (HAVE_CFMAKERAW */
2334 #if !defined (HAVE_CFSETSPEED)
2335 /* Workaround for targets which are missing cfsetspeed. */
2337 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2339 return (cfsetispeed (termios_p
, vitesse
)
2340 + cfsetospeed (termios_p
, vitesse
));
2344 /* For serial-process-configure */
2346 serial_configure (struct Lisp_Process
*p
,
2347 Lisp_Object contact
)
2349 Lisp_Object childp2
= Qnil
;
2350 Lisp_Object tem
= Qnil
;
2351 struct termios attr
;
2353 char summary
[4] = "???"; /* This usually becomes "8N1". */
2355 childp2
= Fcopy_sequence (p
->childp
);
2357 /* Read port attributes and prepare default configuration. */
2358 err
= tcgetattr (p
->outfd
, &attr
);
2360 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2362 #if defined (CLOCAL)
2363 attr
.c_cflag
|= CLOCAL
;
2366 attr
.c_cflag
|= CREAD
;
2369 /* Configure speed. */
2370 if (!NILP (Fplist_member (contact
, QCspeed
)))
2371 tem
= Fplist_get (contact
, QCspeed
);
2373 tem
= Fplist_get (p
->childp
, QCspeed
);
2375 err
= cfsetspeed (&attr
, XINT (tem
));
2377 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2378 emacs_strerror (errno
));
2379 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2381 /* Configure bytesize. */
2382 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2383 tem
= Fplist_get (contact
, QCbytesize
);
2385 tem
= Fplist_get (p
->childp
, QCbytesize
);
2387 tem
= make_number (8);
2389 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2390 error (":bytesize must be nil (8), 7, or 8");
2391 summary
[0] = XINT (tem
) + '0';
2392 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2393 attr
.c_cflag
&= ~CSIZE
;
2394 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2396 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2397 if (XINT (tem
) != 8)
2398 error ("Bytesize cannot be changed");
2400 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2402 /* Configure parity. */
2403 if (!NILP (Fplist_member (contact
, QCparity
)))
2404 tem
= Fplist_get (contact
, QCparity
);
2406 tem
= Fplist_get (p
->childp
, QCparity
);
2407 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2408 error (":parity must be nil (no parity), `even', or `odd'");
2409 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2410 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2411 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2416 else if (EQ (tem
, Qeven
))
2419 attr
.c_cflag
|= PARENB
;
2420 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2422 else if (EQ (tem
, Qodd
))
2425 attr
.c_cflag
|= (PARENB
| PARODD
);
2426 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2429 /* Don't error on no parity, which should be set by cfmakeraw. */
2431 error ("Parity cannot be configured");
2433 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2435 /* Configure stopbits. */
2436 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2437 tem
= Fplist_get (contact
, QCstopbits
);
2439 tem
= Fplist_get (p
->childp
, QCstopbits
);
2441 tem
= make_number (1);
2443 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2444 error (":stopbits must be nil (1 stopbit), 1, or 2");
2445 summary
[2] = XINT (tem
) + '0';
2446 #if defined (CSTOPB)
2447 attr
.c_cflag
&= ~CSTOPB
;
2448 if (XINT (tem
) == 2)
2449 attr
.c_cflag
|= CSTOPB
;
2451 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2452 if (XINT (tem
) != 1)
2453 error ("Stopbits cannot be configured");
2455 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2457 /* Configure flowcontrol. */
2458 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2459 tem
= Fplist_get (contact
, QCflowcontrol
);
2461 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2462 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2463 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2464 #if defined (CRTSCTS)
2465 attr
.c_cflag
&= ~CRTSCTS
;
2467 #if defined (CNEW_RTSCTS)
2468 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2470 #if defined (IXON) && defined (IXOFF)
2471 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2475 /* Already configured. */
2477 else if (EQ (tem
, Qhw
))
2479 #if defined (CRTSCTS)
2480 attr
.c_cflag
|= CRTSCTS
;
2481 #elif defined (CNEW_RTSCTS)
2482 attr
.c_cflag
|= CNEW_RTSCTS
;
2484 error ("Hardware flowcontrol (RTS/CTS) not supported");
2487 else if (EQ (tem
, Qsw
))
2489 #if defined (IXON) && defined (IXOFF)
2490 attr
.c_iflag
|= (IXON
| IXOFF
);
2492 error ("Software flowcontrol (XON/XOFF) not supported");
2495 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2497 /* Activate configuration. */
2498 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2500 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2502 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2503 pset_childp (p
, childp2
);
2505 #endif /* not DOS_NT */
2507 /* System depended enumeration of and access to system processes a-la ps(1). */
2511 /* Process enumeration and access via /proc. */
2514 list_system_processes (void)
2516 Lisp_Object procdir
, match
, proclist
, next
;
2517 struct gcpro gcpro1
, gcpro2
;
2518 register Lisp_Object tail
;
2520 GCPRO2 (procdir
, match
);
2521 /* For every process on the system, there's a directory in the
2522 "/proc" pseudo-directory whose name is the numeric ID of that
2524 procdir
= build_string ("/proc");
2525 match
= build_string ("[0-9]+");
2526 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2528 /* `proclist' gives process IDs as strings. Destructively convert
2529 each string into a number. */
2530 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2533 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2537 /* directory_files_internal returns the files in reverse order; undo
2539 proclist
= Fnreverse (proclist
);
2543 #elif defined DARWIN_OS || defined __FreeBSD__
2546 list_system_processes (void)
2549 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2551 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2554 struct kinfo_proc
*procs
;
2557 struct gcpro gcpro1
;
2558 Lisp_Object proclist
= Qnil
;
2560 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2563 procs
= xmalloc (len
);
2564 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2571 len
/= sizeof (struct kinfo_proc
);
2572 for (i
= 0; i
< len
; i
++)
2575 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2577 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2587 /* The WINDOWSNT implementation is in w32.c.
2588 The MSDOS implementation is in dosfns.c. */
2589 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2592 list_system_processes (void)
2597 #endif /* !defined (WINDOWSNT) */
2601 time_from_jiffies (unsigned long long tval
, long hz
)
2603 unsigned long long s
= tval
/ hz
;
2604 unsigned long long frac
= tval
% hz
;
2607 if (TYPE_MAXIMUM (time_t) < s
)
2609 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2610 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2611 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2614 /* This is reachable only in the unlikely case that HZ * HZ
2615 exceeds ULLONG_MAX. It calculates an approximation that is
2616 guaranteed to be in range. */
2617 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2618 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2619 ns
= frac
/ hz_per_ns
;
2622 return make_emacs_time (s
, ns
);
2626 ltime_from_jiffies (unsigned long long tval
, long hz
)
2628 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2629 return make_lisp_time (t
);
2636 EMACS_TIME up
= make_emacs_time (0, 0);
2639 fup
= fopen ("/proc/uptime", "r");
2643 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2644 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2646 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2647 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2648 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2651 if (TYPE_MAXIMUM (time_t) < upsec
)
2653 upsec
= TYPE_MAXIMUM (time_t);
2654 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2658 int upfraclen
= upfrac_end
- upfrac_start
;
2659 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2661 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2663 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2665 up
= make_emacs_time (upsec
, upfrac
);
2674 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2675 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2678 procfs_ttyname (int rdev
)
2681 char name
[PATH_MAX
];
2684 fdev
= fopen ("/proc/tty/drivers", "r");
2689 unsigned long minor_beg
, minor_end
;
2690 char minor
[25]; /* 2 32-bit numbers + dash */
2693 while (!feof (fdev
) && !ferror (fdev
))
2695 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2696 && major
== MAJOR (rdev
))
2698 minor_beg
= strtoul (minor
, &endp
, 0);
2700 minor_end
= minor_beg
;
2701 else if (*endp
== '-')
2702 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2706 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2708 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2716 return build_string (name
);
2719 static unsigned long
2720 procfs_get_total_memory (void)
2723 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2726 fmem
= fopen ("/proc/meminfo", "r");
2730 unsigned long entry_value
;
2731 char entry_name
[20]; /* the longest I saw is 13+1 */
2733 while (!feof (fmem
) && !ferror (fmem
))
2735 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2736 && strcmp (entry_name
, "MemTotal:") == 0)
2738 retval
= entry_value
;
2749 system_process_attributes (Lisp_Object pid
)
2751 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2755 long clocks_per_sec
;
2757 char procbuf
[1025], *p
, *q
;
2760 static char const default_cmd
[] = "???";
2761 const char *cmd
= default_cmd
;
2762 int cmdsize
= sizeof default_cmd
- 1;
2763 char *cmdline
= NULL
;
2764 ptrdiff_t cmdline_size
;
2767 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2770 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2771 long priority
, niceness
, rss
;
2772 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2773 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2775 Lisp_Object attrs
= Qnil
;
2776 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2777 struct gcpro gcpro1
, gcpro2
;
2779 CHECK_NUMBER_OR_FLOAT (pid
);
2780 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2781 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2782 if (stat (procfn
, &st
) < 0)
2785 GCPRO2 (attrs
, decoded_cmd
);
2789 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2791 pw
= getpwuid (uid
);
2794 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2797 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2799 gr
= getgrgid (gid
);
2802 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2804 strcpy (fn
, procfn
);
2805 procfn_end
= fn
+ strlen (fn
);
2806 strcpy (procfn_end
, "/stat");
2807 fd
= emacs_open (fn
, O_RDONLY
, 0);
2808 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2810 procbuf
[nread
] = '\0';
2813 p
= strchr (p
, '(');
2816 q
= strrchr (p
+ 1, ')');
2826 /* Command name is encoded in locale-coding-system; decode it. */
2827 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2828 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2829 Vlocale_coding_system
, 0);
2830 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2834 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2836 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2837 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2838 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2839 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2840 &u_time
, &s_time
, &cutime
, &cstime
,
2841 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2846 state_str
[1] = '\0';
2847 tem
= build_string (state_str
);
2848 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2850 /* Stops GCC whining about limited range of data type. */
2855 thcount_eint
= thcount
;
2856 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2857 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2858 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2859 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2860 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2861 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2862 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2863 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2864 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2865 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2866 if (clocks_per_sec
< 0)
2867 clocks_per_sec
= 100;
2868 attrs
= Fcons (Fcons (Qutime
,
2869 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2871 attrs
= Fcons (Fcons (Qstime
,
2872 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2874 attrs
= Fcons (Fcons (Qtime
,
2875 ltime_from_jiffies (s_time
+ u_time
,
2878 attrs
= Fcons (Fcons (Qcutime
,
2879 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2881 attrs
= Fcons (Fcons (Qcstime
,
2882 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2884 attrs
= Fcons (Fcons (Qctime
,
2885 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2887 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2888 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2889 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2890 tnow
= current_emacs_time ();
2891 telapsed
= get_up_time ();
2892 tboot
= sub_emacs_time (tnow
, telapsed
);
2893 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2894 tstart
= add_emacs_time (tboot
, tstart
);
2895 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2896 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2897 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2898 telapsed
= sub_emacs_time (tnow
, tstart
);
2899 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2900 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2901 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2902 / EMACS_TIME_TO_DOUBLE (telapsed
));
2905 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2906 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2909 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2916 strcpy (procfn_end
, "/cmdline");
2917 fd
= emacs_open (fn
, O_RDONLY
, 0);
2921 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2923 if (emacs_read (fd
, &ch
, 1) != 1)
2926 if (c_isspace (c
) || c
== '\\')
2927 cmdline_size
++; /* for later quoting, see below */
2931 cmdline
= xmalloc (cmdline_size
+ 1);
2932 lseek (fd
, 0L, SEEK_SET
);
2934 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2935 cmdline
[nread
++] = '\0';
2938 /* Assigning zero to `nread' makes us skip the following
2939 two loops, assign zero to cmdline_size, and enter the
2940 following `if' clause that handles unknown command
2944 /* We don't want trailing null characters. */
2945 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2947 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2949 /* Escape-quote whitespace and backslashes. */
2950 if (c_isspace (*p
) || *p
== '\\')
2952 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2956 else if (*p
== '\0')
2959 cmdline_size
= nread
;
2963 cmdline_size
= cmdsize
+ 2;
2964 cmdline
= xmalloc (cmdline_size
+ 1);
2965 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2968 /* Command line is encoded in locale-coding-system; decode it. */
2969 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2970 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2971 Vlocale_coding_system
, 0);
2973 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2980 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2982 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2983 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2984 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2985 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2986 #undef _FILE_OFFSET_BITS
2988 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2993 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2994 #define _FILE_OFFSET_BITS 64
2995 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2997 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3000 system_process_attributes (Lisp_Object pid
)
3002 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3007 struct psinfo pinfo
;
3013 Lisp_Object attrs
= Qnil
;
3014 Lisp_Object decoded_cmd
, tem
;
3015 struct gcpro gcpro1
, gcpro2
;
3017 CHECK_NUMBER_OR_FLOAT (pid
);
3018 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3019 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3020 if (stat (procfn
, &st
) < 0)
3023 GCPRO2 (attrs
, decoded_cmd
);
3027 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3029 pw
= getpwuid (uid
);
3032 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3035 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3037 gr
= getgrgid (gid
);
3040 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3042 strcpy (fn
, procfn
);
3043 procfn_end
= fn
+ strlen (fn
);
3044 strcpy (procfn_end
, "/psinfo");
3045 fd
= emacs_open (fn
, O_RDONLY
, 0);
3047 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3049 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3050 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3051 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3055 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3056 state_str
[1] = '\0';
3057 tem
= build_string (state_str
);
3058 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3061 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3062 need to get a string from it. */
3064 /* FIXME: missing: Qtpgid */
3076 Are they available? */
3078 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3079 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3080 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3081 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3082 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3084 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3085 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3086 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3088 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3089 range 0 .. 2**15, representing 0.0 .. 1.0. */
3090 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
3091 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
3094 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3095 strlen (pinfo
.pr_fname
)),
3096 Vlocale_coding_system
, 0);
3097 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3099 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3100 strlen (pinfo
.pr_psargs
)),
3101 Vlocale_coding_system
, 0);
3102 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3112 #elif defined __FreeBSD__
3115 timeval_to_EMACS_TIME (struct timeval t
)
3117 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3121 make_lisp_timeval (struct timeval t
)
3123 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3127 system_process_attributes (Lisp_Object pid
)
3130 int pagesize
= getpagesize ();
3137 char args
[MAXPATHLEN
];
3140 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3141 struct kinfo_proc proc
;
3142 size_t proclen
= sizeof proc
;
3144 struct gcpro gcpro1
, gcpro2
;
3145 Lisp_Object attrs
= Qnil
;
3146 Lisp_Object decoded_comm
;
3148 CHECK_NUMBER_OR_FLOAT (pid
);
3149 CONS_TO_INTEGER (pid
, int, proc_id
);
3152 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3155 GCPRO2 (attrs
, decoded_comm
);
3157 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3160 pw
= getpwuid (proc
.ki_uid
);
3163 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3165 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3168 gr
= getgrgid (proc
.ki_svgid
);
3171 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3173 decoded_comm
= code_convert_string_norecord
3174 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3175 Vlocale_coding_system
, 0);
3177 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3179 char state
[2] = {'\0', '\0'};
3180 switch (proc
.ki_stat
)
3202 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3205 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3206 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3207 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3210 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3213 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3215 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3216 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3217 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3218 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3219 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3221 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3223 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3225 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3226 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3227 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3229 attrs
= Fcons (Fcons (Qcutime
,
3230 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3232 attrs
= Fcons (Fcons (Qcstime
,
3233 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3235 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3236 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3237 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3239 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3241 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3242 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3243 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3244 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3245 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3248 now
= current_emacs_time ();
3249 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3250 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3252 len
= sizeof fscale
;
3253 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3258 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3260 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3261 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3262 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3266 len
= sizeof npages
;
3267 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3269 double pmem
= (proc
.ki_flag
& P_INMEM
3270 ? 100.0 * proc
.ki_rssize
/ npages
3272 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3275 mib
[2] = KERN_PROC_ARGS
;
3277 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3280 for (i
= 0; i
< len
; i
++)
3282 if (! args
[i
] && i
< len
- 1)
3287 (code_convert_string_norecord
3288 (build_unibyte_string (args
),
3289 Vlocale_coding_system
, 0));
3291 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3298 /* The WINDOWSNT implementation is in w32.c.
3299 The MSDOS implementation is in dosfns.c. */
3300 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3303 system_process_attributes (Lisp_Object pid
)
3308 #endif /* !defined (WINDOWSNT) */