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 */
33 #include <allocator.h>
35 #include <careadlinkat.h>
36 #include <ignore-value.h>
40 #include "sysselect.h"
41 #include "blockinput.h"
44 #include <sys/param.h>
45 #include <sys/sysctl.h>
50 #include <sys/resource.h>
56 #define write sys_write
58 #define STDERR_FILENO fileno(GetStdHandle(STD_ERROR_HANDLE))
61 #endif /* not WINDOWSNT */
63 #include <sys/types.h>
67 /* Get SI_SRPC_DOMAIN, if it is available. */
68 #ifdef HAVE_SYS_SYSTEMINFO_H
69 #include <sys/systeminfo.h>
72 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
74 #include <sys/param.h>
83 #ifdef HAVE_SYS_UTSNAME_H
84 #include <sys/utsname.h>
86 #endif /* HAVE_SYS_UTSNAME_H */
91 #include "termhooks.h"
94 #include "dispextern.h"
96 #include "cm.h" /* for reset_sys_modes */
100 /* In process.h which conflicts with the local copy. */
102 int _cdecl
_spawnlp (int, const char *, const char *, ...);
103 int _cdecl
_getpid (void);
106 #include "syssignal.h"
109 static int emacs_get_tty (int, struct emacs_tty
*);
110 static int emacs_set_tty (int, struct emacs_tty
*, int);
112 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
114 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
117 /* Declare here, including term.h is problematic on some systems. */
118 extern void tputs (const char *, int, int (*)(int));
120 static const int baud_convert
[] =
122 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
123 1800, 2400, 4800, 9600, 19200, 38400
127 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
129 /* Return the current working directory. Returns NULL on errors.
130 Any other returned value must be freed with free. This is used
131 only when get_current_dir_name is not defined on the system. */
133 get_current_dir_name (void)
136 char *pwd
= getenv ("PWD");
137 struct stat dotstat
, pwdstat
;
138 /* If PWD is accurate, use it instead of calling getcwd. PWD is
139 sometimes a nicer name, and using it may avoid a fatal error if a
140 parent directory is searchable but not readable. */
142 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
143 && stat (pwd
, &pwdstat
) == 0
144 && stat (".", &dotstat
) == 0
145 && dotstat
.st_ino
== pwdstat
.st_ino
146 && dotstat
.st_dev
== pwdstat
.st_dev
148 && strlen (pwd
) < MAXPATHLEN
152 buf
= malloc (strlen (pwd
) + 1);
159 size_t buf_size
= 1024;
160 buf
= malloc (buf_size
);
165 if (getcwd (buf
, buf_size
) == buf
)
169 int tmp_errno
= errno
;
175 buf
= realloc (buf
, buf_size
);
185 /* Discard pending input on all input descriptors. */
188 discard_tty_input (void)
191 struct emacs_tty buf
;
196 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
197 while (dos_keyread () != -1)
199 #else /* not MSDOS */
201 struct tty_display_info
*tty
;
202 for (tty
= tty_list
; tty
; tty
= tty
->next
)
204 if (tty
->input
) /* Is the device suspended? */
206 emacs_get_tty (fileno (tty
->input
), &buf
);
207 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
211 #endif /* not MSDOS */
212 #endif /* not WINDOWSNT */
218 /* Arrange for character C to be read as the next input from
220 XXX What if we have multiple ttys?
226 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
229 /* Should perhaps error if in batch mode */
231 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
232 #else /* no TIOCSTI */
233 error ("Cannot stuff terminal input characters in this version of Unix");
234 #endif /* no TIOCSTI */
240 init_baud_rate (int fd
)
250 #else /* not DOS_NT */
255 emacs_ospeed
= cfgetospeed (&sg
);
256 #endif /* not DOS_NT */
259 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
260 ? baud_convert
[emacs_ospeed
] : 9600);
269 /* Wait for the subprocess with process id CHILD to terminate or change status.
270 CHILD must be a child process that has not been reaped.
271 If STATUS is non-null, store the waitpid-style exit status into *STATUS
272 and tell wait_reading_process_output that it needs to look around.
273 Use waitpid-style OPTIONS when waiting.
274 If INTERRUPTIBLE, this function is interruptible by a signal.
276 Return CHILD if successful, 0 if no status is available;
277 the latter is possible only when options & NOHANG. */
279 get_child_status (pid_t child
, int *status
, int options
, bool interruptible
)
283 /* Invoke waitpid only with a known process ID; do not invoke
284 waitpid with a nonpositive argument. Otherwise, Emacs might
285 reap an unwanted process by mistake. For example, invoking
286 waitpid (-1, ...) can mess up glib by reaping glib's subprocesses,
287 so that another thread running glib won't find them. */
290 while ((pid
= waitpid (child
, status
, options
)) < 0)
292 /* Check that CHILD is a child process that has not been reaped,
293 and that STATUS and OPTIONS are valid. Otherwise abort,
294 as continuing after this internal error could cause Emacs to
295 become confused and kill innocent-victim processes. */
299 /* Note: the MS-Windows emulation of waitpid calls QUIT
305 /* If successful and status is requested, tell wait_reading_process_output
306 that it needs to wake up and look around. */
307 if (pid
&& status
&& input_available_clear_time
)
308 *input_available_clear_time
= make_emacs_time (0, 0);
313 /* Wait for the subprocess with process id CHILD to terminate.
314 CHILD must be a child process that has not been reaped.
315 If STATUS is non-null, store the waitpid-style exit status into *STATUS
316 and tell wait_reading_process_output that it needs to look around.
317 If INTERRUPTIBLE, this function is interruptible by a signal. */
319 wait_for_termination (pid_t child
, int *status
, bool interruptible
)
321 get_child_status (child
, status
, 0, interruptible
);
324 /* Report whether the subprocess with process id CHILD has changed status.
325 Termination counts as a change of status.
326 CHILD must be a child process that has not been reaped.
327 If STATUS is non-null, store the waitpid-style exit status into *STATUS
328 and tell wait_reading_process_output that it needs to look around.
329 Use waitpid-style OPTIONS to check status, but do not wait.
331 Return CHILD if successful, 0 if no status is available because
332 the process's state has not changed. */
334 child_status_changed (pid_t child
, int *status
, int options
)
336 return get_child_status (child
, status
, WNOHANG
| options
, 0);
340 * flush any pending output
341 * (may flush input as well; it does not matter the way we use it)
345 flush_pending_output (int channel
)
347 /* FIXME: maybe this function should be removed */
350 /* Set up the terminal at the other end of a pseudo-terminal that
351 we will be controlling an inferior through.
352 It should not echo or do line-editing, since that is done
353 in Emacs. No padding needed for insertion into an Emacs buffer. */
356 child_setup_tty (int out
)
361 emacs_get_tty (out
, &s
);
362 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
363 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
365 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
366 Some versions of GNU Hurd do not have FFDLY? */
368 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
369 /* No output delays */
371 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
372 /* No output delays */
375 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
376 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
378 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
381 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
384 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
386 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
387 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
388 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
389 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
392 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
395 #ifdef SIGNALS_VIA_CHARACTERS
396 /* the QUIT and INTR character are used in process_send_signal
397 so set them here to something useful. */
398 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
399 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
400 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
401 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
402 #endif /* not SIGNALS_VIA_CHARACTERS */
405 /* Also, PTY overloads NUL and BREAK.
406 don't ignore break, but don't signal either, so it looks like NUL. */
407 s
.main
.c_iflag
&= ~IGNBRK
;
408 s
.main
.c_iflag
&= ~BRKINT
;
409 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
410 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
411 would force it to 0377. That looks like duplicated code. */
412 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
415 /* We originally enabled ICANON (and set VEOF to 04), and then had
416 process.c send additional EOF chars to flush the output when faced
417 with long lines, but this leads to weird effects when the
418 subprocess has disabled ICANON and ends up seeing those spurious
419 extra EOFs. So we don't send EOFs any more in
420 process.c:send_process. First we tried to disable ICANON by
421 default, so if a subsprocess sets up ICANON, it's his problem (or
422 the Elisp package that talks to it) to deal with lines that are
423 too long. But this disables some features, such as the ability
424 to send EOF signals. So we re-enabled ICANON but there is no
425 more "send eof to flush" going on (which is wrong and unportable
426 in itself). The correct way to handle too much output is to
427 buffer what could not be written and then write it again when
428 select returns ok for writing. This has it own set of
429 problems. Write is now asynchronous, is that a problem? How much
430 do we buffer, and what do we do when that limit is reached? */
432 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
433 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
434 #if 0 /* These settings only apply to non-ICANON mode. */
435 s
.main
.c_cc
[VMIN
] = 1;
436 s
.main
.c_cc
[VTIME
] = 0;
439 emacs_set_tty (out
, &s
, 0);
440 #endif /* not WINDOWSNT */
442 #endif /* not MSDOS */
445 /* Record a signal code and the action for it. */
449 struct sigaction action
;
452 static void save_signal_handlers (struct save_signal
*);
453 static void restore_signal_handlers (struct save_signal
*);
455 /* Suspend the Emacs process; give terminal to its superior. */
463 /* On a system where suspending is not implemented,
464 instead fork a subshell and let it talk directly to the terminal
471 /* Fork a subshell. */
476 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
478 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
482 struct save_signal saved_handlers
[5];
484 unsigned char *volatile str_volatile
= 0;
488 saved_handlers
[0].code
= SIGINT
;
489 saved_handlers
[1].code
= SIGQUIT
;
490 saved_handlers
[2].code
= SIGTERM
;
492 saved_handlers
[3].code
= SIGIO
;
493 saved_handlers
[4].code
= 0;
495 saved_handlers
[3].code
= 0;
498 /* Mentioning current_buffer->buffer would mean including buffer.h,
499 which somehow wedges the hp compiler. So instead... */
501 dir
= intern ("default-directory");
502 if (NILP (Fboundp (dir
)))
504 dir
= Fsymbol_value (dir
);
508 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
509 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
511 memcpy (str
, SDATA (dir
), len
);
512 if (str
[len
- 1] != '/') str
[len
++] = '/';
518 save_signal_handlers (saved_handlers
);
522 error ("Can't spawn subshell");
529 #ifdef DOS_NT /* MW, Aug 1993 */
530 getcwd (oldwd
, sizeof oldwd
);
532 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
535 sh
= (char *) egetenv ("SHELL");
539 /* Use our buffer's default directory for the subshell. */
541 if (str
&& chdir ((char *) str
) != 0)
544 ignore_value (write (1, "Can't chdir\n", 12));
549 close_process_descs (); /* Close Emacs's pipes/ptys */
551 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
553 char *epwd
= getenv ("PWD");
554 char old_pwd
[MAXPATHLEN
+1+4];
556 /* If PWD is set, pass it with corrected value. */
559 strcpy (old_pwd
, epwd
);
560 if (str
[len
- 1] == '/')
562 setenv ("PWD", str
, 1);
565 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
567 putenv (old_pwd
); /* restore previous value */
569 #else /* not MSDOS */
571 /* Waits for process completion */
572 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
573 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
575 write (1, "Can't execute subshell", 22);
576 #else /* not WINDOWSNT */
577 execlp (sh
, sh
, (char *) 0);
578 ignore_value (write (1, "Can't execute subshell", 22));
580 #endif /* not WINDOWSNT */
581 #endif /* not MSDOS */
584 /* Do this now if we did not do it before. */
586 save_signal_handlers (saved_handlers
);
590 wait_for_termination (pid
, &status
, 0);
592 restore_signal_handlers (saved_handlers
);
596 save_signal_handlers (struct save_signal
*saved_handlers
)
598 while (saved_handlers
->code
)
600 struct sigaction action
;
601 emacs_sigaction_init (&action
, SIG_IGN
);
602 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
608 restore_signal_handlers (struct save_signal
*saved_handlers
)
610 while (saved_handlers
->code
)
612 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
618 static int old_fcntl_flags
[MAXDESC
];
625 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
626 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
627 interrupts_deferred
= 0;
635 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
648 sigemptyset (&unblocked
);
650 sigaddset (&unblocked
, SIGWINCH
);
652 sigaddset (&unblocked
, SIGIO
);
653 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
655 interrupts_deferred
= 0;
660 unrequest_sigio (void)
668 sigemptyset (&blocked
);
670 sigaddset (&blocked
, SIGWINCH
);
672 sigaddset (&blocked
, SIGIO
);
673 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
674 interrupts_deferred
= 1;
682 signal (SIGIO
, SIG_IGN
);
687 /* Saving and restoring the process group of Emacs's terminal. */
689 /* The process group of which Emacs was a member when it initially
692 If Emacs was in its own process group (i.e. inherited_pgroup ==
693 getpid ()), then we know we're running under a shell with job
694 control (Emacs would never be run as part of a pipeline).
697 If Emacs was not in its own process group, then we know we're
698 running under a shell (or a caller) that doesn't know how to
699 separate itself from Emacs (like sh). Emacs must be in its own
700 process group in order to receive SIGIO correctly. In this
701 situation, we put ourselves in our own pgroup, forcibly set the
702 tty's pgroup to our pgroup, and make sure to restore and reinstate
703 the tty's pgroup just like any other terminal setting. If
704 inherited_group was not the tty's pgroup, then we'll get a
705 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
706 it goes foreground in the future, which is what should happen. */
708 static pid_t inherited_pgroup
;
711 init_foreground_group (void)
713 pid_t pgrp
= getpgrp ();
714 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
717 /* Block and unblock SIGTTOU. */
720 block_tty_out_signal (void)
724 sigemptyset (&blocked
);
725 sigaddset (&blocked
, SIGTTOU
);
726 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
731 unblock_tty_out_signal (void)
734 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
738 /* Safely set a controlling terminal FD's process group to PGID.
739 If we are not in the foreground already, POSIX requires tcsetpgrp
740 to deliver a SIGTTOU signal, which would stop us. This is an
741 annoyance, so temporarily ignore the signal.
743 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
744 skip all this unless SIGTTOU is defined. */
746 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
750 block_tty_out_signal ();
751 tcsetpgrp (fd
, pgid
);
752 unblock_tty_out_signal ();
757 /* Split off the foreground process group to Emacs alone. When we are
758 in the foreground, but not started in our own process group,
759 redirect the tty device handle FD to point to our own process
760 group. FD must be the file descriptor of the controlling tty. */
762 narrow_foreground_group (int fd
)
764 if (inherited_pgroup
&& setpgid (0, 0) == 0)
765 tcsetpgrp_without_stopping (fd
, getpid ());
768 /* Set the tty to our original foreground group. */
770 widen_foreground_group (int fd
)
772 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
773 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
776 /* Getting and setting emacs_tty structures. */
778 /* Set *TC to the parameters associated with the terminal FD.
779 Return zero if all's well, or -1 if we ran into an error we
780 couldn't deal with. */
782 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
784 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
786 /* We have those nifty POSIX tcmumbleattr functions. */
787 memset (&settings
->main
, 0, sizeof (settings
->main
));
788 if (tcgetattr (fd
, &settings
->main
) < 0)
792 /* We have survived the tempest. */
797 /* Set the parameters of the tty on FD according to the contents of
798 *SETTINGS. If FLUSHP is non-zero, we discard input.
799 Return 0 if all went well, and -1 if anything failed. */
802 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
804 /* Set the primary parameters - baud rate, character size, etcetera. */
807 /* We have those nifty POSIX tcmumbleattr functions.
808 William J. Smith <wjs@wiis.wang.com> writes:
809 "POSIX 1003.1 defines tcsetattr to return success if it was
810 able to perform any of the requested actions, even if some
811 of the requested actions could not be performed.
812 We must read settings back to ensure tty setup properly.
813 AIX requires this to keep tty from hanging occasionally." */
814 /* This make sure that we don't loop indefinitely in here. */
815 for (i
= 0 ; i
< 10 ; i
++)
816 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
827 memset (&new, 0, sizeof (new));
828 /* Get the current settings, and see if they're what we asked for. */
829 tcgetattr (fd
, &new);
830 /* We cannot use memcmp on the whole structure here because under
831 * aix386 the termios structure has some reserved field that may
834 if ( new.c_iflag
== settings
->main
.c_iflag
835 && new.c_oflag
== settings
->main
.c_oflag
836 && new.c_cflag
== settings
->main
.c_cflag
837 && new.c_lflag
== settings
->main
.c_lflag
838 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
845 /* We have survived the tempest. */
852 static int old_fcntl_owner
[MAXDESC
];
853 #endif /* F_SETOWN */
855 /* This may also be defined in stdio,
856 but if so, this does no harm,
857 and using the same name avoids wasting the other one's space. */
860 unsigned char _sobuf
[BUFSIZ
+8];
865 /* Initialize the terminal mode on all tty devices that are currently
869 init_all_sys_modes (void)
871 struct tty_display_info
*tty
;
872 for (tty
= tty_list
; tty
; tty
= tty
->next
)
873 init_sys_modes (tty
);
876 /* Initialize the terminal mode on the given tty device. */
879 init_sys_modes (struct tty_display_info
*tty_out
)
881 struct emacs_tty tty
;
882 Lisp_Object terminal
;
884 Vtty_erase_char
= Qnil
;
889 if (!tty_out
->output
)
890 return; /* The tty is suspended. */
892 narrow_foreground_group (fileno (tty_out
->input
));
894 if (! tty_out
->old_tty
)
895 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
897 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
899 tty
= *tty_out
->old_tty
;
901 #if !defined (DOS_NT)
902 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
904 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
905 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
906 #ifdef INLCR /* I'm just being cautious,
907 since I can't check how widespread INLCR is--rms. */
908 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
911 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
913 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
914 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
916 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
918 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
919 if (tty_out
->flow_control
)
921 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
923 tty
.main
.c_iflag
&= ~IXANY
;
927 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
928 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
930 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
932 if (tty_out
->meta_key
)
934 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
935 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
939 XSETTERMINAL(terminal
, tty_out
->terminal
);
940 if (!NILP (Fcontrolling_tty_p (terminal
)))
942 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
943 /* Set up C-g for both SIGQUIT and SIGINT.
944 We don't know which we will get, but we handle both alike
945 so which one it really gives us does not matter. */
946 tty
.main
.c_cc
[VQUIT
] = quit_char
;
950 /* We normally don't get interrupt or quit signals from tty
951 devices other than our controlling terminal; therefore,
952 we must handle C-g as normal input. Unfortunately, this
953 means that the interrupt and quit feature must be
954 disabled on secondary ttys, or we would not even see the
957 Note that even though emacsclient could have special code
958 to pass SIGINT to Emacs, we should _not_ enable
959 interrupt/quit keys for emacsclient frames. This means
960 that we can't break out of loops in C code from a
961 secondary tty frame, but we can always decide what
962 display the C-g came from, which is more important from a
963 usability point of view. (Consider the case when two
964 people work together using the same Emacs instance.) */
965 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
966 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
968 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
969 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
971 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
976 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
979 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
981 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
982 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
985 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
988 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
989 #endif /* VREPRINT */
991 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
994 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
995 #endif /* VDISCARD */
997 if (tty_out
->flow_control
)
1000 tty
.main
.c_cc
[VSTART
] = '\021';
1003 tty
.main
.c_cc
[VSTOP
] = '\023';
1009 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1012 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1017 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1018 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1019 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1020 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1021 if (tty_out
->flow_control
)
1024 tty
.main
.c_cc
[VSTART
] = '\021';
1027 tty
.main
.c_cc
[VSTOP
] = '\023';
1030 /* Also, PTY overloads NUL and BREAK.
1031 don't ignore break, but don't signal either, so it looks like NUL.
1032 This really serves a purpose only if running in an XTERM window
1033 or via TELNET or the like, but does no harm elsewhere. */
1034 tty
.main
.c_iflag
&= ~IGNBRK
;
1035 tty
.main
.c_iflag
&= ~BRKINT
;
1037 #endif /* not DOS_NT */
1039 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1040 if (!tty_out
->term_initted
)
1041 internal_terminal_init ();
1042 dos_ttraw (tty_out
);
1045 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1047 /* This code added to insure that, if flow-control is not to be used,
1048 we have an unlocked terminal at the start. */
1051 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1054 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1057 #if !defined (DOS_NT)
1059 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1064 if (interrupt_input
)
1066 old_fcntl_owner
[fileno (tty_out
->input
)] =
1067 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1068 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1069 init_sigio (fileno (tty_out
->input
));
1071 if (gpm_tty
== tty_out
)
1073 /* Arrange for mouse events to give us SIGIO signals. */
1074 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1075 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1076 init_sigio (gpm_fd
);
1078 #endif /* HAVE_GPM */
1080 #endif /* F_GETOWN */
1083 /* This symbol is defined on recent USG systems.
1084 Someone says without this call USG won't really buffer the file
1085 even with a call to setbuf. */
1086 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1088 setbuf (tty_out
->output
, (char *) _sobuf
);
1091 if (tty_out
->terminal
->set_terminal_modes_hook
)
1092 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1094 if (!tty_out
->term_initted
)
1096 Lisp_Object tail
, frame
;
1097 FOR_EACH_FRAME (tail
, frame
)
1099 /* XXX This needs to be revised. */
1100 if (FRAME_TERMCAP_P (XFRAME (frame
))
1101 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1102 init_frame_faces (XFRAME (frame
));
1106 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1108 /* We used to call "direct_output_forward_char(0)" here,
1109 but it's not clear why, since it may not do anything anyway. */
1113 Lisp_Object tail
, frame
;
1115 FOR_EACH_FRAME (tail
, frame
)
1117 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1118 || FRAME_MSDOS_P (XFRAME (frame
)))
1119 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1120 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1124 tty_out
->term_initted
= 1;
1127 /* Return nonzero if safe to use tabs in output.
1128 At the time this is called, init_sys_modes has not been done yet. */
1131 tabs_safe_p (int fd
)
1133 struct emacs_tty etty
;
1135 emacs_get_tty (fd
, &etty
);
1138 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1139 #else /* not TABDLY */
1141 #endif /* not TABDLY */
1147 /* Get terminal size from system.
1148 Store number of lines into *HEIGHTP and width into *WIDTHP.
1149 We store 0 if there's no valid information. */
1152 get_tty_size (int fd
, int *widthp
, int *heightp
)
1154 #if defined TIOCGWINSZ
1157 struct winsize size
;
1159 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1160 *widthp
= *heightp
= 0;
1163 *widthp
= size
.ws_col
;
1164 *heightp
= size
.ws_row
;
1167 #elif defined TIOCGSIZE
1169 /* SunOS - style. */
1170 struct ttysize size
;
1172 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1173 *widthp
= *heightp
= 0;
1176 *widthp
= size
.ts_cols
;
1177 *heightp
= size
.ts_lines
;
1180 #elif defined WINDOWSNT
1182 CONSOLE_SCREEN_BUFFER_INFO info
;
1183 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1185 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1186 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1189 *widthp
= *heightp
= 0;
1193 *widthp
= ScreenCols ();
1194 *heightp
= ScreenRows ();
1196 #else /* system doesn't know size */
1204 /* Set the logical window size associated with descriptor FD
1205 to HEIGHT and WIDTH. This is used mainly with ptys. */
1208 set_window_size (int fd
, int height
, int width
)
1213 struct winsize size
;
1214 size
.ws_row
= height
;
1215 size
.ws_col
= width
;
1217 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1218 return 0; /* error */
1225 /* SunOS - style. */
1226 struct ttysize size
;
1227 size
.ts_lines
= height
;
1228 size
.ts_cols
= width
;
1230 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1236 #endif /* not SunOS-style */
1237 #endif /* not BSD-style */
1242 /* Prepare all terminal devices for exiting Emacs. */
1245 reset_all_sys_modes (void)
1247 struct tty_display_info
*tty
;
1248 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1249 reset_sys_modes (tty
);
1252 /* Prepare the terminal for closing it; move the cursor to the
1253 bottom of the frame, turn off interrupt-driven I/O, etc. */
1256 reset_sys_modes (struct tty_display_info
*tty_out
)
1263 if (!tty_out
->term_initted
)
1266 if (!tty_out
->output
)
1267 return; /* The tty is suspended. */
1269 /* Go to and clear the last line of the terminal. */
1271 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1273 /* Code adapted from tty_clear_end_of_line. */
1274 if (tty_out
->TS_clr_line
)
1276 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1279 { /* have to do it the hard way */
1281 tty_turn_off_insert (tty_out
);
1283 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1285 fputc (' ', tty_out
->output
);
1289 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1290 fflush (tty_out
->output
);
1292 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1293 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1296 /* Avoid possible loss of output when changing terminal modes. */
1297 fsync (fileno (tty_out
->output
));
1302 if (interrupt_input
)
1304 reset_sigio (fileno (tty_out
->input
));
1305 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1306 old_fcntl_owner
[fileno (tty_out
->input
)]);
1308 #endif /* F_SETOWN */
1309 fcntl (fileno (tty_out
->input
), F_SETFL
,
1310 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1313 if (tty_out
->old_tty
)
1314 while (emacs_set_tty (fileno (tty_out
->input
),
1315 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1318 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1322 widen_foreground_group (fileno (tty_out
->input
));
1327 /* Set up the proper status flags for use of a pty. */
1332 /* I'm told that TOICREMOTE does not mean control chars
1333 "can't be sent" but rather that they don't have
1334 input-editing or signaling effects.
1335 That should be good, because we have other ways
1336 to do those things in Emacs.
1337 However, telnet mode seems not to work on 4.2.
1338 So TIOCREMOTE is turned off now. */
1340 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1341 will hang. In particular, the "timeout" feature (which
1342 causes a read to return if there is no data available)
1343 does this. Also it is known that telnet mode will hang
1344 in such a way that Emacs must be stopped (perhaps this
1345 is the same problem).
1347 If TIOCREMOTE is turned off, then there is a bug in
1348 hp-ux which sometimes loses data. Apparently the
1349 code which blocks the master process when the internal
1350 buffer fills up does not work. Other than this,
1351 though, everything else seems to work fine.
1353 Since the latter lossage is more benign, we may as well
1354 lose that way. -- cph */
1356 #if defined (UNIX98_PTYS)
1359 ioctl (fd
, FIONBIO
, &on
);
1364 #endif /* HAVE_PTYS */
1367 #include <sys/socket.h>
1369 #endif /* HAVE_SOCKETS */
1372 #ifndef HAVE_H_ERRNO
1375 #endif /* TRY_AGAIN */
1378 init_system_name (void)
1380 #ifndef HAVE_GETHOSTNAME
1383 Vsystem_name
= build_string (uts
.nodename
);
1384 #else /* HAVE_GETHOSTNAME */
1385 unsigned int hostname_size
= 256;
1386 char *hostname
= alloca (hostname_size
);
1388 /* Try to get the host name; if the buffer is too short, try
1389 again. Apparently, the only indication gethostname gives of
1390 whether the buffer was large enough is the presence or absence
1391 of a '\0' in the string. Eech. */
1394 gethostname (hostname
, hostname_size
- 1);
1395 hostname
[hostname_size
- 1] = '\0';
1397 /* Was the buffer large enough for the '\0'? */
1398 if (strlen (hostname
) < hostname_size
- 1)
1401 hostname_size
<<= 1;
1402 hostname
= alloca (hostname_size
);
1405 /* Turn the hostname into the official, fully-qualified hostname.
1406 Don't do this if we're going to dump; this can confuse system
1407 libraries on some machines and make the dumped emacs core dump. */
1410 #endif /* not CANNOT_DUMP */
1411 if (! strchr (hostname
, '.'))
1414 #ifdef HAVE_GETADDRINFO
1415 struct addrinfo
*res
;
1416 struct addrinfo hints
;
1419 memset (&hints
, 0, sizeof (hints
));
1420 hints
.ai_socktype
= SOCK_STREAM
;
1421 hints
.ai_flags
= AI_CANONNAME
;
1423 for (count
= 0;; count
++)
1425 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1426 || ret
!= EAI_AGAIN
)
1431 Fsleep_for (make_number (1), Qnil
);
1436 struct addrinfo
*it
= res
;
1439 char *fqdn
= it
->ai_canonname
;
1440 if (fqdn
&& strchr (fqdn
, '.')
1441 && strcmp (fqdn
, "localhost.localdomain") != 0)
1447 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1448 strcpy (hostname
, it
->ai_canonname
);
1452 #else /* !HAVE_GETADDRINFO */
1454 for (count
= 0;; count
++)
1460 hp
= gethostbyname (hostname
);
1462 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1469 Fsleep_for (make_number (1), Qnil
);
1474 char *fqdn
= (char *) hp
->h_name
;
1476 if (!strchr (fqdn
, '.'))
1478 /* We still don't have a fully qualified domain name.
1479 Try to find one in the list of alternate names */
1480 char **alias
= hp
->h_aliases
;
1482 && (!strchr (*alias
, '.')
1483 || !strcmp (*alias
, "localhost.localdomain")))
1490 #endif /* !HAVE_GETADDRINFO */
1492 #endif /* HAVE_SOCKETS */
1493 Vsystem_name
= build_string (hostname
);
1494 #endif /* HAVE_GETHOSTNAME */
1497 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1498 if (*p
== ' ' || *p
== '\t')
1503 sigset_t empty_mask
;
1505 static struct sigaction process_fatal_action
;
1508 emacs_sigaction_flags (void)
1511 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1512 'select') to reset their timeout on some platforms (e.g.,
1513 HP-UX 11), which is not what we want. Also, when Emacs is
1514 interactive, we don't want SA_RESTART because we need to poll
1515 for pending input so we need long-running syscalls to be interrupted
1516 after a signal that sets pending_signals.
1518 Non-interactive keyboard input goes through stdio, where we
1519 always want restartable system calls. */
1526 /* Store into *ACTION a signal action suitable for Emacs, with handler
1529 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1531 sigemptyset (&action
->sa_mask
);
1533 /* When handling a signal, block nonfatal system signals that are caught
1534 by Emacs. This makes race conditions less likely. */
1535 sigaddset (&action
->sa_mask
, SIGALRM
);
1536 sigaddset (&action
->sa_mask
, SIGCHLD
);
1538 sigaddset (&action
->sa_mask
, SIGDANGER
);
1540 #ifdef PROFILER_CPU_SUPPORT
1541 sigaddset (&action
->sa_mask
, SIGPROF
);
1544 sigaddset (&action
->sa_mask
, SIGWINCH
);
1546 if (! noninteractive
)
1548 sigaddset (&action
->sa_mask
, SIGINT
);
1549 sigaddset (&action
->sa_mask
, SIGQUIT
);
1551 sigaddset (&action
->sa_mask
, SIGIO
);
1555 if (! IEEE_FLOATING_POINT
)
1556 sigaddset (&action
->sa_mask
, SIGFPE
);
1558 action
->sa_handler
= handler
;
1559 action
->sa_flags
= emacs_sigaction_flags ();
1562 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1563 static pthread_t main_thread
;
1566 /* SIG has arrived at the current process. Deliver it to the main
1567 thread, which should handle it with HANDLER.
1569 If we are on the main thread, handle the signal SIG with HANDLER.
1570 Otherwise, redirect the signal to the main thread, blocking it from
1571 this thread. POSIX says any thread can receive a signal that is
1572 associated with a process, process group, or asynchronous event.
1573 On GNU/Linux that is not true, but for other systems (FreeBSD at
1576 deliver_process_signal (int sig
, signal_handler_t handler
)
1578 /* Preserve errno, to avoid race conditions with signal handlers that
1579 might change errno. Races can occur even in single-threaded hosts. */
1580 int old_errno
= errno
;
1582 bool on_main_thread
= true;
1583 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1584 if (! pthread_equal (pthread_self (), main_thread
))
1587 sigemptyset (&blocked
);
1588 sigaddset (&blocked
, sig
);
1589 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1590 pthread_kill (main_thread
, sig
);
1591 on_main_thread
= false;
1600 /* Static location to save a fatal backtrace in a thread.
1601 FIXME: If two subsidiary threads fail simultaneously, the resulting
1602 backtrace may be garbage. */
1603 enum { BACKTRACE_LIMIT_MAX
= 500 };
1604 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1605 static int thread_backtrace_npointers
;
1607 /* SIG has arrived at the current thread.
1608 If we are on the main thread, handle the signal SIG with HANDLER.
1609 Otherwise, this is a fatal error in the handling thread. */
1611 deliver_thread_signal (int sig
, signal_handler_t handler
)
1613 int old_errno
= errno
;
1615 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1616 if (! pthread_equal (pthread_self (), main_thread
))
1618 thread_backtrace_npointers
1619 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1620 sigaction (sig
, &process_fatal_action
, 0);
1621 pthread_kill (main_thread
, sig
);
1623 /* Avoid further damage while the main thread is exiting. */
1625 sigsuspend (&empty_mask
);
1633 #if !HAVE_DECL_SYS_SIGLIST
1635 # ifdef _sys_siglist
1636 # define sys_siglist _sys_siglist
1638 # define sys_siglist my_sys_siglist
1639 static char const *sys_siglist
[NSIG
];
1644 # define sys_siglist_entries _sys_nsig
1646 # define sys_siglist_entries NSIG
1649 /* Handle bus errors, invalid instruction, etc. */
1651 handle_fatal_signal (int sig
)
1653 terminate_due_to_signal (sig
, 40);
1657 deliver_fatal_signal (int sig
)
1659 deliver_process_signal (sig
, handle_fatal_signal
);
1663 deliver_fatal_thread_signal (int sig
)
1665 deliver_thread_signal (sig
, handle_fatal_signal
);
1668 static _Noreturn
void
1669 handle_arith_signal (int sig
)
1671 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1672 xsignal0 (Qarith_error
);
1676 deliver_arith_signal (int sig
)
1678 deliver_thread_signal (sig
, handle_arith_signal
);
1681 /* Treat SIG as a terminating signal, unless it is already ignored and
1682 we are in --batch mode. Among other things, this makes nohup work. */
1684 maybe_fatal_sig (int sig
)
1686 bool catch_sig
= !noninteractive
;
1689 struct sigaction old_action
;
1690 sigaction (sig
, 0, &old_action
);
1691 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1694 sigaction (sig
, &process_fatal_action
, 0);
1698 init_signals (bool dumping
)
1700 struct sigaction thread_fatal_action
;
1701 struct sigaction action
;
1703 sigemptyset (&empty_mask
);
1705 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1706 main_thread
= pthread_self ();
1709 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1712 sys_siglist
[SIGABRT
] = "Aborted";
1714 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1716 sys_siglist
[SIGALRM
] = "Alarm clock";
1718 sys_siglist
[SIGBUS
] = "Bus error";
1720 sys_siglist
[SIGCHLD
] = "Child status changed";
1722 sys_siglist
[SIGCONT
] = "Continued";
1725 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1728 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1731 sys_siglist
[SIGEMT
] = "Emulation trap";
1733 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1735 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1738 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1740 sys_siglist
[SIGHUP
] = "Hangup";
1741 sys_siglist
[SIGILL
] = "Illegal instruction";
1742 sys_siglist
[SIGINT
] = "Interrupt";
1744 sys_siglist
[SIGIO
] = "I/O possible";
1747 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1750 sys_siglist
[SIGIOT
] = "IOT trap";
1752 sys_siglist
[SIGKILL
] = "Killed";
1754 sys_siglist
[SIGLOST
] = "Resource lost";
1757 sys_siglist
[SIGLWP
] = "SIGLWP";
1760 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1763 sys_siglist
[SIGWIND
] = "SIGPHONE";
1765 sys_siglist
[SIGPIPE
] = "Broken pipe";
1767 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1770 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1773 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1776 sys_siglist
[SIGPWR
] = "Power-fail restart";
1778 sys_siglist
[SIGQUIT
] = "Quit";
1780 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1783 sys_siglist
[SIGSAK
] = "Secure attention";
1785 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1787 sys_siglist
[SIGSOUND
] = "Sound completed";
1790 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1793 sys_siglist
[SIGSTP
] = "Stopped (user)";
1796 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1798 sys_siglist
[SIGTERM
] = "Terminated";
1800 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1803 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1806 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1809 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1812 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1815 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1818 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1821 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1824 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1827 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1830 sys_siglist
[SIGWINCH
] = "Window size changed";
1833 sys_siglist
[SIGWIND
] = "SIGWIND";
1836 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1839 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1842 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1844 /* Don't alter signal handlers if dumping. On some machines,
1845 changing signal handlers sets static data that would make signals
1846 fail to work right when the dumped Emacs is run. */
1850 sigfillset (&process_fatal_action
.sa_mask
);
1851 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1852 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1854 sigfillset (&thread_fatal_action
.sa_mask
);
1855 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1856 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1858 /* SIGINT may need special treatment on MS-Windows. See
1859 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1860 Please update the doc of kill-emacs, kill-emacs-hook, and
1861 NEWS if you change this. */
1863 maybe_fatal_sig (SIGHUP
);
1864 maybe_fatal_sig (SIGINT
);
1865 maybe_fatal_sig (SIGTERM
);
1867 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1868 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1869 to behave more like typical batch applications do. */
1870 if (! noninteractive
)
1871 signal (SIGPIPE
, SIG_IGN
);
1873 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1874 sigaction (SIGILL
, &thread_fatal_action
, 0);
1875 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1877 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1878 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1879 interpreter's floating point operations, so treat SIGFPE as an
1880 arith-error if it arises in the main thread. */
1881 if (IEEE_FLOATING_POINT
)
1882 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1885 emacs_sigaction_init (&action
, deliver_arith_signal
);
1886 sigaction (SIGFPE
, &action
, 0);
1890 add_user_signal (SIGUSR1
, "sigusr1");
1893 add_user_signal (SIGUSR2
, "sigusr2");
1895 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1897 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1900 sigaction (SIGORE
, &thread_fatal_action
, 0);
1903 sigaction (SIGUME
, &thread_fatal_action
, 0);
1906 sigaction (SIGDLK
, &process_fatal_action
, 0);
1909 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1912 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1915 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1918 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1920 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1922 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1924 sigaction (SIGTERM
, &process_fatal_action
, 0);
1926 signal (SIGPROF
, SIG_IGN
);
1929 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1932 sigaction (SIGXCPU
, &process_fatal_action
, 0);
1935 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1939 /* This just means available memory is getting low. */
1940 emacs_sigaction_init (&action
, deliver_danger_signal
);
1941 sigaction (SIGDANGER
, &action
, 0);
1944 /* AIX-specific signals. */
1946 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1949 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1952 sigaction (SIGMSG
, &process_fatal_action
, 0);
1955 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1958 sigaction (SIGSAK
, &process_fatal_action
, 0);
1961 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1964 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1974 /* Figure out how many bits the system's random number generator uses.
1975 `random' and `lrand48' are assumed to return 31 usable bits.
1976 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1977 so we'll shift it and treat it like the 15-bit USG `rand'. */
1981 # define RAND_BITS 31
1982 # else /* !HAVE_RANDOM */
1983 # ifdef HAVE_LRAND48
1984 # define RAND_BITS 31
1985 # define random lrand48
1986 # else /* !HAVE_LRAND48 */
1987 # define RAND_BITS 15
1988 # if RAND_MAX == 32767
1989 # define random rand
1990 # else /* RAND_MAX != 32767 */
1991 # if RAND_MAX == 2147483647
1992 # define random() (rand () >> 16)
1993 # else /* RAND_MAX != 2147483647 */
1995 # define random rand
1997 # define random() (rand () >> 16)
1999 # endif /* RAND_MAX != 2147483647 */
2000 # endif /* RAND_MAX != 32767 */
2001 # endif /* !HAVE_LRAND48 */
2002 # endif /* !HAVE_RANDOM */
2003 #endif /* !RAND_BITS */
2006 seed_random (void *seed
, ptrdiff_t seed_size
)
2008 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2009 unsigned int arg
= 0;
2013 unsigned char *argp
= (unsigned char *) &arg
;
2014 unsigned char *seedp
= seed
;
2016 for (i
= 0; i
< seed_size
; i
++)
2017 argp
[i
% sizeof arg
] ^= seedp
[i
];
2021 # ifdef HAVE_LRAND48
2032 EMACS_TIME t
= current_emacs_time ();
2033 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
2034 seed_random (&v
, sizeof v
);
2038 * Return a nonnegative random integer out of whatever we've got.
2039 * It contains enough bits to make a random (signed) Emacs fixnum.
2040 * This suffices even for a 64-bit architecture with a 15-bit rand.
2047 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2048 val
= (random () ^ (val
<< RAND_BITS
)
2049 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2050 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2051 return val
& INTMASK
;
2054 #ifndef HAVE_SNPRINTF
2055 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2057 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2059 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2060 ptrdiff_t nbytes
= size
- 1;
2065 va_start (ap
, format
);
2066 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2070 if (nbytes
== size
- 1)
2072 /* Calculate the length of the string that would have been created
2073 had the buffer been large enough. */
2074 char stackbuf
[4000];
2076 ptrdiff_t bsize
= sizeof stackbuf
;
2077 va_start (ap
, format
);
2078 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2084 if (INT_MAX
< nbytes
)
2097 /* If a backtrace is available, output the top lines of it to stderr.
2098 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2099 This function may be called from a signal handler, so it should
2100 not invoke async-unsafe functions like malloc. */
2102 emacs_backtrace (int backtrace_limit
)
2104 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2105 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2109 if (thread_backtrace_npointers
)
2111 buffer
= thread_backtrace_buffer
;
2112 npointers
= thread_backtrace_npointers
;
2116 buffer
= main_backtrace_buffer
;
2117 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2122 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
2123 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2124 if (bounded_limit
< npointers
)
2125 ignore_value (write (STDERR_FILENO
, "...\n", 4));
2133 terminate_due_to_signal (SIGABRT
, 40);
2138 emacs_open (const char *path
, int oflag
, int mode
)
2140 register int rtnval
;
2142 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2143 && (errno
== EINTR
))
2149 emacs_close (int fd
)
2152 register int rtnval
;
2154 while ((rtnval
= close (fd
)) == -1
2155 && (errno
== EINTR
))
2158 /* If close is interrupted SunOS 4.1 may or may not have closed the
2159 file descriptor. If it did the second close will fail with
2160 errno = EBADF. That means we have succeeded. */
2161 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2167 /* Maximum number of bytes to read or write in a single system call.
2168 This works around a serious bug in Linux kernels before 2.6.16; see
2169 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2170 It's likely to work around similar bugs in other operating systems, so do it
2171 on all platforms. Round INT_MAX down to a page size, with the conservative
2172 assumption that page sizes are at most 2**18 bytes (any kernel with a
2173 page size larger than that shouldn't have the bug). */
2174 #ifndef MAX_RW_COUNT
2175 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2178 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2179 Return the number of bytes read, which might be less than NBYTE.
2180 On error, set errno and return -1. */
2182 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
2184 register ssize_t rtnval
;
2186 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2187 passes a size that large to emacs_read. */
2189 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2190 && (errno
== EINTR
))
2195 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2196 or if a partial write occurs. Return the number of bytes written, setting
2197 errno if this is less than NBYTE. */
2199 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
2202 ptrdiff_t bytes_written
;
2208 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2214 /* I originally used `QUIT' but that might causes files to
2215 be truncated if you hit C-g in the middle of it. --Stef */
2216 if (pending_signals
)
2217 process_pending_signals ();
2226 bytes_written
+= rtnval
;
2229 return (bytes_written
);
2232 static struct allocator
const emacs_norealloc_allocator
=
2233 { xmalloc
, NULL
, xfree
, memory_full
};
2235 /* Get the symbolic link value of FILENAME. Return a pointer to a
2236 NUL-terminated string. If readlink fails, return NULL and set
2237 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
2238 Otherwise, allocate memory and return a pointer to that memory. If
2239 memory allocation fails, diagnose and fail without returning. If
2240 successful, store the length of the symbolic link into *LINKLEN. */
2242 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
2244 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
2245 &emacs_norealloc_allocator
, careadlinkatcwd
);
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 BSD_SYSTEM
2546 list_system_processes (void)
2548 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
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
++)
2574 #if defined DARWIN_OS || defined __NetBSD__
2575 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2576 #elif defined __OpenBSD__
2577 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2579 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2589 /* The WINDOWSNT implementation is in w32.c.
2590 The MSDOS implementation is in dosfns.c. */
2591 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2594 list_system_processes (void)
2599 #endif /* !defined (WINDOWSNT) */
2603 time_from_jiffies (unsigned long long tval
, long hz
)
2605 unsigned long long s
= tval
/ hz
;
2606 unsigned long long frac
= tval
% hz
;
2609 if (TYPE_MAXIMUM (time_t) < s
)
2611 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2612 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2613 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2616 /* This is reachable only in the unlikely case that HZ * HZ
2617 exceeds ULLONG_MAX. It calculates an approximation that is
2618 guaranteed to be in range. */
2619 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2620 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2621 ns
= frac
/ hz_per_ns
;
2624 return make_emacs_time (s
, ns
);
2628 ltime_from_jiffies (unsigned long long tval
, long hz
)
2630 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2631 return make_lisp_time (t
);
2638 EMACS_TIME up
= make_emacs_time (0, 0);
2641 fup
= fopen ("/proc/uptime", "r");
2645 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2646 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2648 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2649 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2650 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2653 if (TYPE_MAXIMUM (time_t) < upsec
)
2655 upsec
= TYPE_MAXIMUM (time_t);
2656 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2660 int upfraclen
= upfrac_end
- upfrac_start
;
2661 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2663 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2665 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2667 up
= make_emacs_time (upsec
, upfrac
);
2676 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2677 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2680 procfs_ttyname (int rdev
)
2683 char name
[PATH_MAX
];
2686 fdev
= fopen ("/proc/tty/drivers", "r");
2691 unsigned long minor_beg
, minor_end
;
2692 char minor
[25]; /* 2 32-bit numbers + dash */
2695 while (!feof (fdev
) && !ferror (fdev
))
2697 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2698 && major
== MAJOR (rdev
))
2700 minor_beg
= strtoul (minor
, &endp
, 0);
2702 minor_end
= minor_beg
;
2703 else if (*endp
== '-')
2704 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2708 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2710 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2718 return build_string (name
);
2721 static unsigned long
2722 procfs_get_total_memory (void)
2725 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2728 fmem
= fopen ("/proc/meminfo", "r");
2732 unsigned long entry_value
;
2733 char entry_name
[20]; /* the longest I saw is 13+1 */
2735 while (!feof (fmem
) && !ferror (fmem
))
2737 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2738 && strcmp (entry_name
, "MemTotal:") == 0)
2740 retval
= entry_value
;
2751 system_process_attributes (Lisp_Object pid
)
2753 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2757 long clocks_per_sec
;
2759 char procbuf
[1025], *p
, *q
;
2762 static char const default_cmd
[] = "???";
2763 const char *cmd
= default_cmd
;
2764 int cmdsize
= sizeof default_cmd
- 1;
2765 char *cmdline
= NULL
;
2766 ptrdiff_t cmdline_size
;
2769 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2772 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2773 long priority
, niceness
, rss
;
2774 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2775 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2777 Lisp_Object attrs
= Qnil
;
2778 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2779 struct gcpro gcpro1
, gcpro2
;
2781 CHECK_NUMBER_OR_FLOAT (pid
);
2782 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2783 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2784 if (stat (procfn
, &st
) < 0)
2787 GCPRO2 (attrs
, decoded_cmd
);
2791 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2793 pw
= getpwuid (uid
);
2796 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2799 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2801 gr
= getgrgid (gid
);
2804 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2806 strcpy (fn
, procfn
);
2807 procfn_end
= fn
+ strlen (fn
);
2808 strcpy (procfn_end
, "/stat");
2809 fd
= emacs_open (fn
, O_RDONLY
, 0);
2810 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2812 procbuf
[nread
] = '\0';
2815 p
= strchr (p
, '(');
2818 q
= strrchr (p
+ 1, ')');
2828 /* Command name is encoded in locale-coding-system; decode it. */
2829 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2830 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2831 Vlocale_coding_system
, 0);
2832 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2836 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2838 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2839 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2840 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2841 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2842 &u_time
, &s_time
, &cutime
, &cstime
,
2843 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2848 state_str
[1] = '\0';
2849 tem
= build_string (state_str
);
2850 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2852 /* Stops GCC whining about limited range of data type. */
2857 thcount_eint
= thcount
;
2858 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2859 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2860 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2861 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2862 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2863 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2864 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2865 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2866 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2867 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2868 if (clocks_per_sec
< 0)
2869 clocks_per_sec
= 100;
2870 attrs
= Fcons (Fcons (Qutime
,
2871 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2873 attrs
= Fcons (Fcons (Qstime
,
2874 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2876 attrs
= Fcons (Fcons (Qtime
,
2877 ltime_from_jiffies (s_time
+ u_time
,
2880 attrs
= Fcons (Fcons (Qcutime
,
2881 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2883 attrs
= Fcons (Fcons (Qcstime
,
2884 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2886 attrs
= Fcons (Fcons (Qctime
,
2887 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2889 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2890 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2891 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2892 tnow
= current_emacs_time ();
2893 telapsed
= get_up_time ();
2894 tboot
= sub_emacs_time (tnow
, telapsed
);
2895 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2896 tstart
= add_emacs_time (tboot
, tstart
);
2897 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2898 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2899 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2900 telapsed
= sub_emacs_time (tnow
, tstart
);
2901 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2902 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2903 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2904 / EMACS_TIME_TO_DOUBLE (telapsed
));
2907 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2908 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2911 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2918 strcpy (procfn_end
, "/cmdline");
2919 fd
= emacs_open (fn
, O_RDONLY
, 0);
2923 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2925 if (emacs_read (fd
, &ch
, 1) != 1)
2928 if (c_isspace (c
) || c
== '\\')
2929 cmdline_size
++; /* for later quoting, see below */
2933 cmdline
= xmalloc (cmdline_size
+ 1);
2934 lseek (fd
, 0L, SEEK_SET
);
2936 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2937 cmdline
[nread
++] = '\0';
2940 /* Assigning zero to `nread' makes us skip the following
2941 two loops, assign zero to cmdline_size, and enter the
2942 following `if' clause that handles unknown command
2946 /* We don't want trailing null characters. */
2947 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2949 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2951 /* Escape-quote whitespace and backslashes. */
2952 if (c_isspace (*p
) || *p
== '\\')
2954 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2958 else if (*p
== '\0')
2961 cmdline_size
= nread
;
2965 cmdline_size
= cmdsize
+ 2;
2966 cmdline
= xmalloc (cmdline_size
+ 1);
2967 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2970 /* Command line is encoded in locale-coding-system; decode it. */
2971 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2972 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2973 Vlocale_coding_system
, 0);
2975 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2982 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2984 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2985 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2986 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2987 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2988 #undef _FILE_OFFSET_BITS
2990 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2995 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2996 #define _FILE_OFFSET_BITS 64
2997 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2999 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3002 system_process_attributes (Lisp_Object pid
)
3004 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3009 struct psinfo pinfo
;
3015 Lisp_Object attrs
= Qnil
;
3016 Lisp_Object decoded_cmd
, tem
;
3017 struct gcpro gcpro1
, gcpro2
;
3019 CHECK_NUMBER_OR_FLOAT (pid
);
3020 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3021 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3022 if (stat (procfn
, &st
) < 0)
3025 GCPRO2 (attrs
, decoded_cmd
);
3029 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3031 pw
= getpwuid (uid
);
3034 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3037 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3039 gr
= getgrgid (gid
);
3042 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3044 strcpy (fn
, procfn
);
3045 procfn_end
= fn
+ strlen (fn
);
3046 strcpy (procfn_end
, "/psinfo");
3047 fd
= emacs_open (fn
, O_RDONLY
, 0);
3049 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3051 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3052 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3053 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3057 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3058 state_str
[1] = '\0';
3059 tem
= build_string (state_str
);
3060 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3063 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3064 need to get a string from it. */
3066 /* FIXME: missing: Qtpgid */
3078 Are they available? */
3080 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3081 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3082 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3083 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3084 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3086 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3087 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3088 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3090 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3091 range 0 .. 2**15, representing 0.0 .. 1.0. */
3092 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
3093 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
3096 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3097 strlen (pinfo
.pr_fname
)),
3098 Vlocale_coding_system
, 0);
3099 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3101 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3102 strlen (pinfo
.pr_psargs
)),
3103 Vlocale_coding_system
, 0);
3104 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3114 #elif defined __FreeBSD__
3117 timeval_to_EMACS_TIME (struct timeval t
)
3119 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3123 make_lisp_timeval (struct timeval t
)
3125 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3129 system_process_attributes (Lisp_Object pid
)
3132 int pagesize
= getpagesize ();
3139 char args
[MAXPATHLEN
];
3142 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3143 struct kinfo_proc proc
;
3144 size_t proclen
= sizeof proc
;
3146 struct gcpro gcpro1
, gcpro2
;
3147 Lisp_Object attrs
= Qnil
;
3148 Lisp_Object decoded_comm
;
3150 CHECK_NUMBER_OR_FLOAT (pid
);
3151 CONS_TO_INTEGER (pid
, int, proc_id
);
3154 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3157 GCPRO2 (attrs
, decoded_comm
);
3159 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3162 pw
= getpwuid (proc
.ki_uid
);
3165 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3167 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3170 gr
= getgrgid (proc
.ki_svgid
);
3173 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3175 decoded_comm
= code_convert_string_norecord
3176 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3177 Vlocale_coding_system
, 0);
3179 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3181 char state
[2] = {'\0', '\0'};
3182 switch (proc
.ki_stat
)
3204 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3207 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3208 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3209 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3212 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3215 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3217 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3218 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3219 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3220 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3221 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3223 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3225 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3227 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3228 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3229 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3231 attrs
= Fcons (Fcons (Qcutime
,
3232 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3234 attrs
= Fcons (Fcons (Qcstime
,
3235 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3237 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3238 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3239 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3241 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3243 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3244 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3245 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3246 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3247 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3250 now
= current_emacs_time ();
3251 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3252 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3254 len
= sizeof fscale
;
3255 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3260 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3262 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3263 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3264 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3268 len
= sizeof npages
;
3269 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3271 double pmem
= (proc
.ki_flag
& P_INMEM
3272 ? 100.0 * proc
.ki_rssize
/ npages
3274 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3277 mib
[2] = KERN_PROC_ARGS
;
3279 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3282 for (i
= 0; i
< len
; i
++)
3284 if (! args
[i
] && i
< len
- 1)
3289 (code_convert_string_norecord
3290 (build_unibyte_string (args
),
3291 Vlocale_coding_system
, 0));
3293 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3300 /* The WINDOWSNT implementation is in w32.c.
3301 The MSDOS implementation is in dosfns.c. */
3302 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3305 system_process_attributes (Lisp_Object pid
)
3310 #endif /* !defined (WINDOWSNT) */