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
);
1292 /* Avoid possible loss of output when changing terminal modes. */
1293 while (fdatasync (fileno (tty_out
->output
)) != 0 && errno
== EINTR
)
1298 if (interrupt_input
)
1300 reset_sigio (fileno (tty_out
->input
));
1301 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1302 old_fcntl_owner
[fileno (tty_out
->input
)]);
1304 #endif /* F_SETOWN */
1305 fcntl (fileno (tty_out
->input
), F_SETFL
,
1306 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1309 if (tty_out
->old_tty
)
1310 while (emacs_set_tty (fileno (tty_out
->input
),
1311 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1314 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1318 widen_foreground_group (fileno (tty_out
->input
));
1323 /* Set up the proper status flags for use of a pty. */
1328 /* I'm told that TOICREMOTE does not mean control chars
1329 "can't be sent" but rather that they don't have
1330 input-editing or signaling effects.
1331 That should be good, because we have other ways
1332 to do those things in Emacs.
1333 However, telnet mode seems not to work on 4.2.
1334 So TIOCREMOTE is turned off now. */
1336 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1337 will hang. In particular, the "timeout" feature (which
1338 causes a read to return if there is no data available)
1339 does this. Also it is known that telnet mode will hang
1340 in such a way that Emacs must be stopped (perhaps this
1341 is the same problem).
1343 If TIOCREMOTE is turned off, then there is a bug in
1344 hp-ux which sometimes loses data. Apparently the
1345 code which blocks the master process when the internal
1346 buffer fills up does not work. Other than this,
1347 though, everything else seems to work fine.
1349 Since the latter lossage is more benign, we may as well
1350 lose that way. -- cph */
1352 #if defined (UNIX98_PTYS)
1355 ioctl (fd
, FIONBIO
, &on
);
1360 #endif /* HAVE_PTYS */
1363 #include <sys/socket.h>
1365 #endif /* HAVE_SOCKETS */
1368 #ifndef HAVE_H_ERRNO
1371 #endif /* TRY_AGAIN */
1374 init_system_name (void)
1376 #ifndef HAVE_GETHOSTNAME
1379 Vsystem_name
= build_string (uts
.nodename
);
1380 #else /* HAVE_GETHOSTNAME */
1381 unsigned int hostname_size
= 256;
1382 char *hostname
= alloca (hostname_size
);
1384 /* Try to get the host name; if the buffer is too short, try
1385 again. Apparently, the only indication gethostname gives of
1386 whether the buffer was large enough is the presence or absence
1387 of a '\0' in the string. Eech. */
1390 gethostname (hostname
, hostname_size
- 1);
1391 hostname
[hostname_size
- 1] = '\0';
1393 /* Was the buffer large enough for the '\0'? */
1394 if (strlen (hostname
) < hostname_size
- 1)
1397 hostname_size
<<= 1;
1398 hostname
= alloca (hostname_size
);
1401 /* Turn the hostname into the official, fully-qualified hostname.
1402 Don't do this if we're going to dump; this can confuse system
1403 libraries on some machines and make the dumped emacs core dump. */
1406 #endif /* not CANNOT_DUMP */
1407 if (! strchr (hostname
, '.'))
1410 #ifdef HAVE_GETADDRINFO
1411 struct addrinfo
*res
;
1412 struct addrinfo hints
;
1415 memset (&hints
, 0, sizeof (hints
));
1416 hints
.ai_socktype
= SOCK_STREAM
;
1417 hints
.ai_flags
= AI_CANONNAME
;
1419 for (count
= 0;; count
++)
1421 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1422 || ret
!= EAI_AGAIN
)
1427 Fsleep_for (make_number (1), Qnil
);
1432 struct addrinfo
*it
= res
;
1435 char *fqdn
= it
->ai_canonname
;
1436 if (fqdn
&& strchr (fqdn
, '.')
1437 && strcmp (fqdn
, "localhost.localdomain") != 0)
1443 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1444 strcpy (hostname
, it
->ai_canonname
);
1448 #else /* !HAVE_GETADDRINFO */
1450 for (count
= 0;; count
++)
1456 hp
= gethostbyname (hostname
);
1458 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1465 Fsleep_for (make_number (1), Qnil
);
1470 char *fqdn
= (char *) hp
->h_name
;
1472 if (!strchr (fqdn
, '.'))
1474 /* We still don't have a fully qualified domain name.
1475 Try to find one in the list of alternate names */
1476 char **alias
= hp
->h_aliases
;
1478 && (!strchr (*alias
, '.')
1479 || !strcmp (*alias
, "localhost.localdomain")))
1486 #endif /* !HAVE_GETADDRINFO */
1488 #endif /* HAVE_SOCKETS */
1489 Vsystem_name
= build_string (hostname
);
1490 #endif /* HAVE_GETHOSTNAME */
1493 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1494 if (*p
== ' ' || *p
== '\t')
1499 sigset_t empty_mask
;
1501 static struct sigaction process_fatal_action
;
1504 emacs_sigaction_flags (void)
1507 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1508 'select') to reset their timeout on some platforms (e.g.,
1509 HP-UX 11), which is not what we want. Also, when Emacs is
1510 interactive, we don't want SA_RESTART because we need to poll
1511 for pending input so we need long-running syscalls to be interrupted
1512 after a signal that sets pending_signals.
1514 Non-interactive keyboard input goes through stdio, where we
1515 always want restartable system calls. */
1522 /* Store into *ACTION a signal action suitable for Emacs, with handler
1525 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1527 sigemptyset (&action
->sa_mask
);
1529 /* When handling a signal, block nonfatal system signals that are caught
1530 by Emacs. This makes race conditions less likely. */
1531 sigaddset (&action
->sa_mask
, SIGALRM
);
1532 sigaddset (&action
->sa_mask
, SIGCHLD
);
1534 sigaddset (&action
->sa_mask
, SIGDANGER
);
1536 #ifdef PROFILER_CPU_SUPPORT
1537 sigaddset (&action
->sa_mask
, SIGPROF
);
1540 sigaddset (&action
->sa_mask
, SIGWINCH
);
1542 if (! noninteractive
)
1544 sigaddset (&action
->sa_mask
, SIGINT
);
1545 sigaddset (&action
->sa_mask
, SIGQUIT
);
1547 sigaddset (&action
->sa_mask
, SIGIO
);
1551 if (! IEEE_FLOATING_POINT
)
1552 sigaddset (&action
->sa_mask
, SIGFPE
);
1554 action
->sa_handler
= handler
;
1555 action
->sa_flags
= emacs_sigaction_flags ();
1558 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1559 static pthread_t main_thread
;
1562 /* SIG has arrived at the current process. Deliver it to the main
1563 thread, which should handle it with HANDLER.
1565 If we are on the main thread, handle the signal SIG with HANDLER.
1566 Otherwise, redirect the signal to the main thread, blocking it from
1567 this thread. POSIX says any thread can receive a signal that is
1568 associated with a process, process group, or asynchronous event.
1569 On GNU/Linux that is not true, but for other systems (FreeBSD at
1572 deliver_process_signal (int sig
, signal_handler_t handler
)
1574 /* Preserve errno, to avoid race conditions with signal handlers that
1575 might change errno. Races can occur even in single-threaded hosts. */
1576 int old_errno
= errno
;
1578 bool on_main_thread
= true;
1579 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1580 if (! pthread_equal (pthread_self (), main_thread
))
1583 sigemptyset (&blocked
);
1584 sigaddset (&blocked
, sig
);
1585 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1586 pthread_kill (main_thread
, sig
);
1587 on_main_thread
= false;
1596 /* Static location to save a fatal backtrace in a thread.
1597 FIXME: If two subsidiary threads fail simultaneously, the resulting
1598 backtrace may be garbage. */
1599 enum { BACKTRACE_LIMIT_MAX
= 500 };
1600 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1601 static int thread_backtrace_npointers
;
1603 /* SIG has arrived at the current thread.
1604 If we are on the main thread, handle the signal SIG with HANDLER.
1605 Otherwise, this is a fatal error in the handling thread. */
1607 deliver_thread_signal (int sig
, signal_handler_t handler
)
1609 int old_errno
= errno
;
1611 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1612 if (! pthread_equal (pthread_self (), main_thread
))
1614 thread_backtrace_npointers
1615 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1616 sigaction (sig
, &process_fatal_action
, 0);
1617 pthread_kill (main_thread
, sig
);
1619 /* Avoid further damage while the main thread is exiting. */
1621 sigsuspend (&empty_mask
);
1629 #if !HAVE_DECL_SYS_SIGLIST
1631 # ifdef _sys_siglist
1632 # define sys_siglist _sys_siglist
1633 # elif HAVE_DECL___SYS_SIGLIST
1634 # define sys_siglist __sys_siglist
1636 # define sys_siglist my_sys_siglist
1637 static char const *sys_siglist
[NSIG
];
1642 # define sys_siglist_entries _sys_nsig
1644 # define sys_siglist_entries NSIG
1647 /* Handle bus errors, invalid instruction, etc. */
1649 handle_fatal_signal (int sig
)
1651 terminate_due_to_signal (sig
, 40);
1655 deliver_fatal_signal (int sig
)
1657 deliver_process_signal (sig
, handle_fatal_signal
);
1661 deliver_fatal_thread_signal (int sig
)
1663 deliver_thread_signal (sig
, handle_fatal_signal
);
1666 static _Noreturn
void
1667 handle_arith_signal (int sig
)
1669 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1670 xsignal0 (Qarith_error
);
1674 deliver_arith_signal (int sig
)
1676 deliver_thread_signal (sig
, handle_arith_signal
);
1681 /* Handler for SIGDANGER. */
1683 handle_danger_signal (int sig
)
1685 malloc_warning ("Operating system warns that virtual memory is running low.\n");
1687 /* It might be unsafe to call do_auto_save now. */
1688 force_auto_save_soon ();
1692 deliver_danger_signal (int sig
)
1694 deliver_process_signal (sig
, handle_danger_signal
);
1698 /* Treat SIG as a terminating signal, unless it is already ignored and
1699 we are in --batch mode. Among other things, this makes nohup work. */
1701 maybe_fatal_sig (int sig
)
1703 bool catch_sig
= !noninteractive
;
1706 struct sigaction old_action
;
1707 sigaction (sig
, 0, &old_action
);
1708 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1711 sigaction (sig
, &process_fatal_action
, 0);
1715 init_signals (bool dumping
)
1717 struct sigaction thread_fatal_action
;
1718 struct sigaction action
;
1720 sigemptyset (&empty_mask
);
1722 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1723 main_thread
= pthread_self ();
1726 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1729 sys_siglist
[SIGABRT
] = "Aborted";
1731 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1733 sys_siglist
[SIGALRM
] = "Alarm clock";
1735 sys_siglist
[SIGBUS
] = "Bus error";
1737 sys_siglist
[SIGCHLD
] = "Child status changed";
1739 sys_siglist
[SIGCONT
] = "Continued";
1742 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1745 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1748 sys_siglist
[SIGEMT
] = "Emulation trap";
1750 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1752 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1755 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1757 sys_siglist
[SIGHUP
] = "Hangup";
1758 sys_siglist
[SIGILL
] = "Illegal instruction";
1759 sys_siglist
[SIGINT
] = "Interrupt";
1761 sys_siglist
[SIGIO
] = "I/O possible";
1764 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1767 sys_siglist
[SIGIOT
] = "IOT trap";
1769 sys_siglist
[SIGKILL
] = "Killed";
1771 sys_siglist
[SIGLOST
] = "Resource lost";
1774 sys_siglist
[SIGLWP
] = "SIGLWP";
1777 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1780 sys_siglist
[SIGWIND
] = "SIGPHONE";
1782 sys_siglist
[SIGPIPE
] = "Broken pipe";
1784 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1787 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1790 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1793 sys_siglist
[SIGPWR
] = "Power-fail restart";
1795 sys_siglist
[SIGQUIT
] = "Quit";
1797 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1800 sys_siglist
[SIGSAK
] = "Secure attention";
1802 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1804 sys_siglist
[SIGSOUND
] = "Sound completed";
1807 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1810 sys_siglist
[SIGSTP
] = "Stopped (user)";
1813 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1815 sys_siglist
[SIGTERM
] = "Terminated";
1817 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1820 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1823 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1826 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1829 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1832 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1835 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1838 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1841 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1844 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1847 sys_siglist
[SIGWINCH
] = "Window size changed";
1850 sys_siglist
[SIGWIND
] = "SIGWIND";
1853 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1856 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1859 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1861 /* Don't alter signal handlers if dumping. On some machines,
1862 changing signal handlers sets static data that would make signals
1863 fail to work right when the dumped Emacs is run. */
1867 sigfillset (&process_fatal_action
.sa_mask
);
1868 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1869 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1871 sigfillset (&thread_fatal_action
.sa_mask
);
1872 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1873 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1875 /* SIGINT may need special treatment on MS-Windows. See
1876 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1877 Please update the doc of kill-emacs, kill-emacs-hook, and
1878 NEWS if you change this. */
1880 maybe_fatal_sig (SIGHUP
);
1881 maybe_fatal_sig (SIGINT
);
1882 maybe_fatal_sig (SIGTERM
);
1884 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1885 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1886 to behave more like typical batch applications do. */
1887 if (! noninteractive
)
1888 signal (SIGPIPE
, SIG_IGN
);
1890 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1891 sigaction (SIGILL
, &thread_fatal_action
, 0);
1892 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1894 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1895 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1896 interpreter's floating point operations, so treat SIGFPE as an
1897 arith-error if it arises in the main thread. */
1898 if (IEEE_FLOATING_POINT
)
1899 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1902 emacs_sigaction_init (&action
, deliver_arith_signal
);
1903 sigaction (SIGFPE
, &action
, 0);
1907 add_user_signal (SIGUSR1
, "sigusr1");
1910 add_user_signal (SIGUSR2
, "sigusr2");
1912 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1914 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1917 sigaction (SIGORE
, &thread_fatal_action
, 0);
1920 sigaction (SIGUME
, &thread_fatal_action
, 0);
1923 sigaction (SIGDLK
, &process_fatal_action
, 0);
1926 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1929 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1932 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1935 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1937 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1939 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1941 sigaction (SIGTERM
, &process_fatal_action
, 0);
1943 signal (SIGPROF
, SIG_IGN
);
1946 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1949 sigaction (SIGXCPU
, &process_fatal_action
, 0);
1952 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1956 /* This just means available memory is getting low. */
1957 emacs_sigaction_init (&action
, deliver_danger_signal
);
1958 sigaction (SIGDANGER
, &action
, 0);
1961 /* AIX-specific signals. */
1963 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1966 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1969 sigaction (SIGMSG
, &process_fatal_action
, 0);
1972 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1975 sigaction (SIGSAK
, &process_fatal_action
, 0);
1978 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1981 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1991 /* Figure out how many bits the system's random number generator uses.
1992 `random' and `lrand48' are assumed to return 31 usable bits.
1993 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1994 so we'll shift it and treat it like the 15-bit USG `rand'. */
1998 # define RAND_BITS 31
1999 # else /* !HAVE_RANDOM */
2000 # ifdef HAVE_LRAND48
2001 # define RAND_BITS 31
2002 # define random lrand48
2003 # else /* !HAVE_LRAND48 */
2004 # define RAND_BITS 15
2005 # if RAND_MAX == 32767
2006 # define random rand
2007 # else /* RAND_MAX != 32767 */
2008 # if RAND_MAX == 2147483647
2009 # define random() (rand () >> 16)
2010 # else /* RAND_MAX != 2147483647 */
2012 # define random rand
2014 # define random() (rand () >> 16)
2016 # endif /* RAND_MAX != 2147483647 */
2017 # endif /* RAND_MAX != 32767 */
2018 # endif /* !HAVE_LRAND48 */
2019 # endif /* !HAVE_RANDOM */
2020 #endif /* !RAND_BITS */
2023 seed_random (void *seed
, ptrdiff_t seed_size
)
2025 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2026 unsigned int arg
= 0;
2030 unsigned char *argp
= (unsigned char *) &arg
;
2031 unsigned char *seedp
= seed
;
2033 for (i
= 0; i
< seed_size
; i
++)
2034 argp
[i
% sizeof arg
] ^= seedp
[i
];
2038 # ifdef HAVE_LRAND48
2049 EMACS_TIME t
= current_emacs_time ();
2050 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
2051 seed_random (&v
, sizeof v
);
2055 * Return a nonnegative random integer out of whatever we've got.
2056 * It contains enough bits to make a random (signed) Emacs fixnum.
2057 * This suffices even for a 64-bit architecture with a 15-bit rand.
2064 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2065 val
= (random () ^ (val
<< RAND_BITS
)
2066 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2067 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2068 return val
& INTMASK
;
2071 #ifndef HAVE_SNPRINTF
2072 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2074 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2076 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2077 ptrdiff_t nbytes
= size
- 1;
2082 va_start (ap
, format
);
2083 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2087 if (nbytes
== size
- 1)
2089 /* Calculate the length of the string that would have been created
2090 had the buffer been large enough. */
2091 char stackbuf
[4000];
2093 ptrdiff_t bsize
= sizeof stackbuf
;
2094 va_start (ap
, format
);
2095 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2101 if (INT_MAX
< nbytes
)
2114 /* If a backtrace is available, output the top lines of it to stderr.
2115 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2116 This function may be called from a signal handler, so it should
2117 not invoke async-unsafe functions like malloc. */
2119 emacs_backtrace (int backtrace_limit
)
2121 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2122 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2126 if (thread_backtrace_npointers
)
2128 buffer
= thread_backtrace_buffer
;
2129 npointers
= thread_backtrace_npointers
;
2133 buffer
= main_backtrace_buffer
;
2134 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2139 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
2140 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2141 if (bounded_limit
< npointers
)
2142 ignore_value (write (STDERR_FILENO
, "...\n", 4));
2150 terminate_due_to_signal (SIGABRT
, 40);
2155 emacs_open (const char *path
, int oflag
, int mode
)
2157 register int rtnval
;
2159 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2160 && (errno
== EINTR
))
2166 emacs_close (int fd
)
2169 register int rtnval
;
2171 while ((rtnval
= close (fd
)) == -1
2172 && (errno
== EINTR
))
2175 /* If close is interrupted SunOS 4.1 may or may not have closed the
2176 file descriptor. If it did the second close will fail with
2177 errno = EBADF. That means we have succeeded. */
2178 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2184 /* Maximum number of bytes to read or write in a single system call.
2185 This works around a serious bug in Linux kernels before 2.6.16; see
2186 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2187 It's likely to work around similar bugs in other operating systems, so do it
2188 on all platforms. Round INT_MAX down to a page size, with the conservative
2189 assumption that page sizes are at most 2**18 bytes (any kernel with a
2190 page size larger than that shouldn't have the bug). */
2191 #ifndef MAX_RW_COUNT
2192 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2195 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2196 Return the number of bytes read, which might be less than NBYTE.
2197 On error, set errno and return -1. */
2199 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
2201 register ssize_t rtnval
;
2203 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2204 passes a size that large to emacs_read. */
2206 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2207 && (errno
== EINTR
))
2212 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2213 or if a partial write occurs. Return the number of bytes written, setting
2214 errno if this is less than NBYTE. */
2216 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
2219 ptrdiff_t bytes_written
;
2225 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2231 /* I originally used `QUIT' but that might causes files to
2232 be truncated if you hit C-g in the middle of it. --Stef */
2233 if (pending_signals
)
2234 process_pending_signals ();
2243 bytes_written
+= rtnval
;
2246 return (bytes_written
);
2249 /* Return a struct timeval that is roughly equivalent to T.
2250 Use the least timeval not less than T.
2251 Return an extremal value if the result would overflow. */
2253 make_timeval (EMACS_TIME t
)
2256 tv
.tv_sec
= t
.tv_sec
;
2257 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2259 if (t
.tv_nsec
% 1000 != 0)
2261 if (tv
.tv_usec
< 999999)
2263 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2273 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2274 ATIME and MTIME, respectively.
2275 FD must be either negative -- in which case it is ignored --
2276 or a file descriptor that is open on FILE.
2277 If FD is nonnegative, then FILE can be NULL. */
2279 set_file_times (int fd
, const char *filename
,
2280 EMACS_TIME atime
, EMACS_TIME mtime
)
2282 struct timespec timespec
[2];
2283 timespec
[0] = atime
;
2284 timespec
[1] = mtime
;
2285 return fdutimens (fd
, filename
, timespec
);
2288 /* Like strsignal, except async-signal-safe, and this function typically
2289 returns a string in the C locale rather than the current locale. */
2291 safe_strsignal (int code
)
2293 char const *signame
= 0;
2295 if (0 <= code
&& code
< sys_siglist_entries
)
2296 signame
= sys_siglist
[code
];
2298 signame
= "Unknown signal";
2304 /* For make-serial-process */
2306 serial_open (char *port
)
2308 int fd
= emacs_open (port
, O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2311 error ("Could not open %s: %s",
2312 port
, emacs_strerror (errno
));
2315 ioctl (fd
, TIOCEXCL
, (char *) 0);
2321 #if !defined (HAVE_CFMAKERAW)
2322 /* Workaround for targets which are missing cfmakeraw. */
2323 /* Pasted from man page. */
2325 cfmakeraw (struct termios
*termios_p
)
2327 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2328 termios_p
->c_oflag
&= ~OPOST
;
2329 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2330 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2331 termios_p
->c_cflag
|= CS8
;
2333 #endif /* !defined (HAVE_CFMAKERAW */
2335 #if !defined (HAVE_CFSETSPEED)
2336 /* Workaround for targets which are missing cfsetspeed. */
2338 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2340 return (cfsetispeed (termios_p
, vitesse
)
2341 + cfsetospeed (termios_p
, vitesse
));
2345 /* For serial-process-configure */
2347 serial_configure (struct Lisp_Process
*p
,
2348 Lisp_Object contact
)
2350 Lisp_Object childp2
= Qnil
;
2351 Lisp_Object tem
= Qnil
;
2352 struct termios attr
;
2354 char summary
[4] = "???"; /* This usually becomes "8N1". */
2356 childp2
= Fcopy_sequence (p
->childp
);
2358 /* Read port attributes and prepare default configuration. */
2359 err
= tcgetattr (p
->outfd
, &attr
);
2361 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2363 #if defined (CLOCAL)
2364 attr
.c_cflag
|= CLOCAL
;
2367 attr
.c_cflag
|= CREAD
;
2370 /* Configure speed. */
2371 if (!NILP (Fplist_member (contact
, QCspeed
)))
2372 tem
= Fplist_get (contact
, QCspeed
);
2374 tem
= Fplist_get (p
->childp
, QCspeed
);
2376 err
= cfsetspeed (&attr
, XINT (tem
));
2378 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2379 emacs_strerror (errno
));
2380 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2382 /* Configure bytesize. */
2383 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2384 tem
= Fplist_get (contact
, QCbytesize
);
2386 tem
= Fplist_get (p
->childp
, QCbytesize
);
2388 tem
= make_number (8);
2390 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2391 error (":bytesize must be nil (8), 7, or 8");
2392 summary
[0] = XINT (tem
) + '0';
2393 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2394 attr
.c_cflag
&= ~CSIZE
;
2395 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2397 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2398 if (XINT (tem
) != 8)
2399 error ("Bytesize cannot be changed");
2401 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2403 /* Configure parity. */
2404 if (!NILP (Fplist_member (contact
, QCparity
)))
2405 tem
= Fplist_get (contact
, QCparity
);
2407 tem
= Fplist_get (p
->childp
, QCparity
);
2408 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2409 error (":parity must be nil (no parity), `even', or `odd'");
2410 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2411 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2412 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2417 else if (EQ (tem
, Qeven
))
2420 attr
.c_cflag
|= PARENB
;
2421 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2423 else if (EQ (tem
, Qodd
))
2426 attr
.c_cflag
|= (PARENB
| PARODD
);
2427 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2430 /* Don't error on no parity, which should be set by cfmakeraw. */
2432 error ("Parity cannot be configured");
2434 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2436 /* Configure stopbits. */
2437 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2438 tem
= Fplist_get (contact
, QCstopbits
);
2440 tem
= Fplist_get (p
->childp
, QCstopbits
);
2442 tem
= make_number (1);
2444 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2445 error (":stopbits must be nil (1 stopbit), 1, or 2");
2446 summary
[2] = XINT (tem
) + '0';
2447 #if defined (CSTOPB)
2448 attr
.c_cflag
&= ~CSTOPB
;
2449 if (XINT (tem
) == 2)
2450 attr
.c_cflag
|= CSTOPB
;
2452 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2453 if (XINT (tem
) != 1)
2454 error ("Stopbits cannot be configured");
2456 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2458 /* Configure flowcontrol. */
2459 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2460 tem
= Fplist_get (contact
, QCflowcontrol
);
2462 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2463 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2464 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2465 #if defined (CRTSCTS)
2466 attr
.c_cflag
&= ~CRTSCTS
;
2468 #if defined (CNEW_RTSCTS)
2469 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2471 #if defined (IXON) && defined (IXOFF)
2472 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2476 /* Already configured. */
2478 else if (EQ (tem
, Qhw
))
2480 #if defined (CRTSCTS)
2481 attr
.c_cflag
|= CRTSCTS
;
2482 #elif defined (CNEW_RTSCTS)
2483 attr
.c_cflag
|= CNEW_RTSCTS
;
2485 error ("Hardware flowcontrol (RTS/CTS) not supported");
2488 else if (EQ (tem
, Qsw
))
2490 #if defined (IXON) && defined (IXOFF)
2491 attr
.c_iflag
|= (IXON
| IXOFF
);
2493 error ("Software flowcontrol (XON/XOFF) not supported");
2496 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2498 /* Activate configuration. */
2499 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2501 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2503 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2504 pset_childp (p
, childp2
);
2506 #endif /* not DOS_NT */
2508 /* System depended enumeration of and access to system processes a-la ps(1). */
2512 /* Process enumeration and access via /proc. */
2515 list_system_processes (void)
2517 Lisp_Object procdir
, match
, proclist
, next
;
2518 struct gcpro gcpro1
, gcpro2
;
2519 register Lisp_Object tail
;
2521 GCPRO2 (procdir
, match
);
2522 /* For every process on the system, there's a directory in the
2523 "/proc" pseudo-directory whose name is the numeric ID of that
2525 procdir
= build_string ("/proc");
2526 match
= build_string ("[0-9]+");
2527 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2529 /* `proclist' gives process IDs as strings. Destructively convert
2530 each string into a number. */
2531 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2534 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2538 /* directory_files_internal returns the files in reverse order; undo
2540 proclist
= Fnreverse (proclist
);
2544 #elif defined DARWIN_OS || defined __FreeBSD__
2547 list_system_processes (void)
2550 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2552 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2555 struct kinfo_proc
*procs
;
2558 struct gcpro gcpro1
;
2559 Lisp_Object proclist
= Qnil
;
2561 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2564 procs
= xmalloc (len
);
2565 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2572 len
/= sizeof (struct kinfo_proc
);
2573 for (i
= 0; i
< len
; i
++)
2576 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2578 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2588 /* The WINDOWSNT implementation is in w32.c.
2589 The MSDOS implementation is in dosfns.c. */
2590 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2593 list_system_processes (void)
2598 #endif /* !defined (WINDOWSNT) */
2602 time_from_jiffies (unsigned long long tval
, long hz
)
2604 unsigned long long s
= tval
/ hz
;
2605 unsigned long long frac
= tval
% hz
;
2608 if (TYPE_MAXIMUM (time_t) < s
)
2610 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2611 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2612 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2615 /* This is reachable only in the unlikely case that HZ * HZ
2616 exceeds ULLONG_MAX. It calculates an approximation that is
2617 guaranteed to be in range. */
2618 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2619 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2620 ns
= frac
/ hz_per_ns
;
2623 return make_emacs_time (s
, ns
);
2627 ltime_from_jiffies (unsigned long long tval
, long hz
)
2629 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2630 return make_lisp_time (t
);
2637 EMACS_TIME up
= make_emacs_time (0, 0);
2640 fup
= fopen ("/proc/uptime", "r");
2644 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2645 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2647 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2648 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2649 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2652 if (TYPE_MAXIMUM (time_t) < upsec
)
2654 upsec
= TYPE_MAXIMUM (time_t);
2655 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2659 int upfraclen
= upfrac_end
- upfrac_start
;
2660 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2662 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2664 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2666 up
= make_emacs_time (upsec
, upfrac
);
2675 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2676 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2679 procfs_ttyname (int rdev
)
2682 char name
[PATH_MAX
];
2685 fdev
= fopen ("/proc/tty/drivers", "r");
2690 unsigned long minor_beg
, minor_end
;
2691 char minor
[25]; /* 2 32-bit numbers + dash */
2694 while (!feof (fdev
) && !ferror (fdev
))
2696 if (fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
) >= 3
2697 && major
== MAJOR (rdev
))
2699 minor_beg
= strtoul (minor
, &endp
, 0);
2701 minor_end
= minor_beg
;
2702 else if (*endp
== '-')
2703 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2707 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2709 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2717 return build_string (name
);
2720 static unsigned long
2721 procfs_get_total_memory (void)
2724 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2727 fmem
= fopen ("/proc/meminfo", "r");
2731 unsigned long entry_value
;
2732 char entry_name
[20]; /* the longest I saw is 13+1 */
2734 while (!feof (fmem
) && !ferror (fmem
))
2736 if (fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
) >= 2
2737 && strcmp (entry_name
, "MemTotal:") == 0)
2739 retval
= entry_value
;
2750 system_process_attributes (Lisp_Object pid
)
2752 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2756 long clocks_per_sec
;
2758 char procbuf
[1025], *p
, *q
;
2761 static char const default_cmd
[] = "???";
2762 const char *cmd
= default_cmd
;
2763 int cmdsize
= sizeof default_cmd
- 1;
2764 char *cmdline
= NULL
;
2765 ptrdiff_t cmdline_size
;
2768 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2771 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2772 long priority
, niceness
, rss
;
2773 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2774 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2776 Lisp_Object attrs
= Qnil
;
2777 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2778 struct gcpro gcpro1
, gcpro2
;
2780 CHECK_NUMBER_OR_FLOAT (pid
);
2781 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2782 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2783 if (stat (procfn
, &st
) < 0)
2786 GCPRO2 (attrs
, decoded_cmd
);
2790 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2792 pw
= getpwuid (uid
);
2795 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2798 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2800 gr
= getgrgid (gid
);
2803 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2805 strcpy (fn
, procfn
);
2806 procfn_end
= fn
+ strlen (fn
);
2807 strcpy (procfn_end
, "/stat");
2808 fd
= emacs_open (fn
, O_RDONLY
, 0);
2809 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2811 procbuf
[nread
] = '\0';
2814 p
= strchr (p
, '(');
2817 q
= strrchr (p
+ 1, ')');
2827 /* Command name is encoded in locale-coding-system; decode it. */
2828 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2829 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2830 Vlocale_coding_system
, 0);
2831 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2835 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2837 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2838 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2839 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2840 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2841 &u_time
, &s_time
, &cutime
, &cstime
,
2842 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2847 state_str
[1] = '\0';
2848 tem
= build_string (state_str
);
2849 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2851 /* Stops GCC whining about limited range of data type. */
2856 thcount_eint
= thcount
;
2857 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2858 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2859 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2860 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2861 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2862 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2863 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2864 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2865 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2866 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2867 if (clocks_per_sec
< 0)
2868 clocks_per_sec
= 100;
2869 attrs
= Fcons (Fcons (Qutime
,
2870 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2872 attrs
= Fcons (Fcons (Qstime
,
2873 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2875 attrs
= Fcons (Fcons (Qtime
,
2876 ltime_from_jiffies (s_time
+ u_time
,
2879 attrs
= Fcons (Fcons (Qcutime
,
2880 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2882 attrs
= Fcons (Fcons (Qcstime
,
2883 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2885 attrs
= Fcons (Fcons (Qctime
,
2886 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2888 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2889 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2890 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2891 tnow
= current_emacs_time ();
2892 telapsed
= get_up_time ();
2893 tboot
= sub_emacs_time (tnow
, telapsed
);
2894 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2895 tstart
= add_emacs_time (tboot
, tstart
);
2896 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2897 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2898 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2899 telapsed
= sub_emacs_time (tnow
, tstart
);
2900 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2901 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2902 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2903 / EMACS_TIME_TO_DOUBLE (telapsed
));
2906 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2907 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2910 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2917 strcpy (procfn_end
, "/cmdline");
2918 fd
= emacs_open (fn
, O_RDONLY
, 0);
2922 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2924 if (emacs_read (fd
, &ch
, 1) != 1)
2927 if (c_isspace (c
) || c
== '\\')
2928 cmdline_size
++; /* for later quoting, see below */
2932 cmdline
= xmalloc (cmdline_size
+ 1);
2933 lseek (fd
, 0L, SEEK_SET
);
2935 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2936 cmdline
[nread
++] = '\0';
2939 /* Assigning zero to `nread' makes us skip the following
2940 two loops, assign zero to cmdline_size, and enter the
2941 following `if' clause that handles unknown command
2945 /* We don't want trailing null characters. */
2946 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2948 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2950 /* Escape-quote whitespace and backslashes. */
2951 if (c_isspace (*p
) || *p
== '\\')
2953 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2957 else if (*p
== '\0')
2960 cmdline_size
= nread
;
2964 cmdline_size
= cmdsize
+ 2;
2965 cmdline
= xmalloc (cmdline_size
+ 1);
2966 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2969 /* Command line is encoded in locale-coding-system; decode it. */
2970 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2971 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2972 Vlocale_coding_system
, 0);
2974 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2981 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2983 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2984 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2985 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2986 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2987 #undef _FILE_OFFSET_BITS
2989 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2994 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2995 #define _FILE_OFFSET_BITS 64
2996 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2998 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3001 system_process_attributes (Lisp_Object pid
)
3003 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3008 struct psinfo pinfo
;
3014 Lisp_Object attrs
= Qnil
;
3015 Lisp_Object decoded_cmd
, tem
;
3016 struct gcpro gcpro1
, gcpro2
;
3018 CHECK_NUMBER_OR_FLOAT (pid
);
3019 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3020 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3021 if (stat (procfn
, &st
) < 0)
3024 GCPRO2 (attrs
, decoded_cmd
);
3028 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3030 pw
= getpwuid (uid
);
3033 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3036 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3038 gr
= getgrgid (gid
);
3041 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3043 strcpy (fn
, procfn
);
3044 procfn_end
= fn
+ strlen (fn
);
3045 strcpy (procfn_end
, "/psinfo");
3046 fd
= emacs_open (fn
, O_RDONLY
, 0);
3048 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3050 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3051 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3052 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3056 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3057 state_str
[1] = '\0';
3058 tem
= build_string (state_str
);
3059 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3062 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3063 need to get a string from it. */
3065 /* FIXME: missing: Qtpgid */
3077 Are they available? */
3079 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3080 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3081 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3082 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3083 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3085 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3086 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3087 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3089 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3090 range 0 .. 2**15, representing 0.0 .. 1.0. */
3091 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
3092 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
3095 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3096 strlen (pinfo
.pr_fname
)),
3097 Vlocale_coding_system
, 0);
3098 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3100 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3101 strlen (pinfo
.pr_psargs
)),
3102 Vlocale_coding_system
, 0);
3103 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3113 #elif defined __FreeBSD__
3116 timeval_to_EMACS_TIME (struct timeval t
)
3118 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3122 make_lisp_timeval (struct timeval t
)
3124 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3128 system_process_attributes (Lisp_Object pid
)
3131 int pagesize
= getpagesize ();
3138 char args
[MAXPATHLEN
];
3141 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3142 struct kinfo_proc proc
;
3143 size_t proclen
= sizeof proc
;
3145 struct gcpro gcpro1
, gcpro2
;
3146 Lisp_Object attrs
= Qnil
;
3147 Lisp_Object decoded_comm
;
3149 CHECK_NUMBER_OR_FLOAT (pid
);
3150 CONS_TO_INTEGER (pid
, int, proc_id
);
3153 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3156 GCPRO2 (attrs
, decoded_comm
);
3158 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3161 pw
= getpwuid (proc
.ki_uid
);
3164 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3166 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3169 gr
= getgrgid (proc
.ki_svgid
);
3172 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3174 decoded_comm
= code_convert_string_norecord
3175 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3176 Vlocale_coding_system
, 0);
3178 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3180 char state
[2] = {'\0', '\0'};
3181 switch (proc
.ki_stat
)
3203 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3206 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3207 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3208 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3211 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3214 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3216 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3217 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3218 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3219 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3220 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3222 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3224 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3226 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3227 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3228 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3230 attrs
= Fcons (Fcons (Qcutime
,
3231 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3233 attrs
= Fcons (Fcons (Qcstime
,
3234 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3236 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3237 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3238 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3240 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3242 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3243 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3244 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3245 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3246 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3249 now
= current_emacs_time ();
3250 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3251 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3253 len
= sizeof fscale
;
3254 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3259 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3261 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3262 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3263 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3267 len
= sizeof npages
;
3268 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3270 double pmem
= (proc
.ki_flag
& P_INMEM
3271 ? 100.0 * proc
.ki_rssize
/ npages
3273 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3276 mib
[2] = KERN_PROC_ARGS
;
3278 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3281 for (i
= 0; i
< len
; i
++)
3283 if (! args
[i
] && i
< len
- 1)
3288 (code_convert_string_norecord
3289 (build_unibyte_string (args
),
3290 Vlocale_coding_system
, 0));
3292 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3299 /* The WINDOWSNT implementation is in w32.c.
3300 The MSDOS implementation is in dosfns.c. */
3301 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3304 system_process_attributes (Lisp_Object pid
)
3309 #endif /* !defined (WINDOWSNT) */