1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2012
3 Free Software Foundation, Inc.
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);
104 extern char *getwd (char *);
107 #include "syssignal.h"
110 static int emacs_get_tty (int, struct emacs_tty
*);
111 static int emacs_set_tty (int, struct emacs_tty
*, int);
113 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
115 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
118 /* Declare here, including term.h is problematic on some systems. */
119 extern void tputs (const char *, int, int (*)(int));
121 static const int baud_convert
[] =
123 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
124 1800, 2400, 4800, 9600, 19200, 38400
128 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
130 /* Return the current working directory. Returns NULL on errors.
131 Any other returned value must be freed with free. This is used
132 only when get_current_dir_name is not defined on the system. */
134 get_current_dir_name (void)
138 struct stat dotstat
, pwdstat
;
139 /* If PWD is accurate, use it instead of calling getwd. PWD is
140 sometimes a nicer name, and using it may avoid a fatal error if a
141 parent directory is searchable but not readable. */
142 if ((pwd
= getenv ("PWD")) != 0
143 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
144 && stat (pwd
, &pwdstat
) == 0
145 && stat (".", &dotstat
) == 0
146 && dotstat
.st_ino
== pwdstat
.st_ino
147 && dotstat
.st_dev
== pwdstat
.st_dev
149 && strlen (pwd
) < MAXPATHLEN
153 buf
= malloc (strlen (pwd
) + 1);
161 size_t buf_size
= 1024;
162 buf
= malloc (buf_size
);
167 if (getcwd (buf
, buf_size
) == buf
)
171 int tmp_errno
= errno
;
177 buf
= realloc (buf
, buf_size
);
185 /* We need MAXPATHLEN here. */
186 buf
= malloc (MAXPATHLEN
+ 1);
189 if (getwd (buf
) == NULL
)
191 int tmp_errno
= errno
;
203 /* Discard pending input on all input descriptors. */
206 discard_tty_input (void)
209 struct emacs_tty buf
;
214 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
215 while (dos_keyread () != -1)
217 #else /* not MSDOS */
219 struct tty_display_info
*tty
;
220 for (tty
= tty_list
; tty
; tty
= tty
->next
)
222 if (tty
->input
) /* Is the device suspended? */
224 emacs_get_tty (fileno (tty
->input
), &buf
);
225 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
229 #endif /* not MSDOS */
230 #endif /* not WINDOWSNT */
236 /* Arrange for character C to be read as the next input from
238 XXX What if we have multiple ttys?
244 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
247 /* Should perhaps error if in batch mode */
249 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
250 #else /* no TIOCSTI */
251 error ("Cannot stuff terminal input characters in this version of Unix");
252 #endif /* no TIOCSTI */
258 init_baud_rate (int fd
)
268 #else /* not DOS_NT */
273 emacs_ospeed
= cfgetospeed (&sg
);
274 #endif /* not DOS_NT */
277 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
278 ? baud_convert
[emacs_ospeed
] : 9600);
288 wait_for_termination_1 (pid_t pid
, int interruptible
)
293 int wait_result
= waitpid (pid
, &status
, 0);
301 record_child_status_change (wait_result
, status
);
305 /* Note: the MS-Windows emulation of waitpid calls QUIT
312 /* Wait for subprocess with process id `pid' to terminate and
313 make sure it will get eliminated (not remain forever as a zombie) */
316 wait_for_termination (pid_t pid
)
318 wait_for_termination_1 (pid
, 0);
321 /* Like the above, but allow keyboard interruption. */
323 interruptible_wait_for_termination (pid_t pid
)
325 wait_for_termination_1 (pid
, 1);
329 * flush any pending output
330 * (may flush input as well; it does not matter the way we use it)
334 flush_pending_output (int channel
)
336 /* FIXME: maybe this function should be removed */
339 /* Set up the terminal at the other end of a pseudo-terminal that
340 we will be controlling an inferior through.
341 It should not echo or do line-editing, since that is done
342 in Emacs. No padding needed for insertion into an Emacs buffer. */
345 child_setup_tty (int out
)
350 emacs_get_tty (out
, &s
);
351 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
352 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
354 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
355 Some versions of GNU Hurd do not have FFDLY? */
357 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
358 /* No output delays */
360 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
361 /* No output delays */
364 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
365 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
367 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
370 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
373 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
375 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
376 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
377 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
378 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
381 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
384 #ifdef SIGNALS_VIA_CHARACTERS
385 /* the QUIT and INTR character are used in process_send_signal
386 so set them here to something useful. */
387 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
388 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
389 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
390 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
391 #endif /* not SIGNALS_VIA_CHARACTERS */
394 /* Also, PTY overloads NUL and BREAK.
395 don't ignore break, but don't signal either, so it looks like NUL. */
396 s
.main
.c_iflag
&= ~IGNBRK
;
397 s
.main
.c_iflag
&= ~BRKINT
;
398 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
399 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
400 would force it to 0377. That looks like duplicated code. */
401 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
404 /* We originally enabled ICANON (and set VEOF to 04), and then had
405 process.c send additional EOF chars to flush the output when faced
406 with long lines, but this leads to weird effects when the
407 subprocess has disabled ICANON and ends up seeing those spurious
408 extra EOFs. So we don't send EOFs any more in
409 process.c:send_process. First we tried to disable ICANON by
410 default, so if a subsprocess sets up ICANON, it's his problem (or
411 the Elisp package that talks to it) to deal with lines that are
412 too long. But this disables some features, such as the ability
413 to send EOF signals. So we re-enabled ICANON but there is no
414 more "send eof to flush" going on (which is wrong and unportable
415 in itself). The correct way to handle too much output is to
416 buffer what could not be written and then write it again when
417 select returns ok for writing. This has it own set of
418 problems. Write is now asynchronous, is that a problem? How much
419 do we buffer, and what do we do when that limit is reached? */
421 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
422 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
423 #if 0 /* These settings only apply to non-ICANON mode. */
424 s
.main
.c_cc
[VMIN
] = 1;
425 s
.main
.c_cc
[VTIME
] = 0;
428 emacs_set_tty (out
, &s
, 0);
429 #endif /* not WINDOWSNT */
431 #endif /* not MSDOS */
434 /* Record a signal code and the action for it. */
438 struct sigaction action
;
441 static void save_signal_handlers (struct save_signal
*);
442 static void restore_signal_handlers (struct save_signal
*);
444 /* Suspend the Emacs process; give terminal to its superior. */
449 #if defined (SIGTSTP) && !defined (MSDOS)
452 pid_t pgrp
= getpgrp ();
453 EMACS_KILLPG (pgrp
, SIGTSTP
);
456 #else /* No SIGTSTP */
457 /* On a system where suspending is not implemented,
458 instead fork a subshell and let it talk directly to the terminal
462 #endif /* no SIGTSTP */
465 /* Fork a subshell. */
470 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
472 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
475 struct save_signal saved_handlers
[5];
477 unsigned char *volatile str_volatile
= 0;
481 saved_handlers
[0].code
= SIGINT
;
482 saved_handlers
[1].code
= SIGQUIT
;
483 saved_handlers
[2].code
= SIGTERM
;
485 saved_handlers
[3].code
= SIGIO
;
486 saved_handlers
[4].code
= 0;
488 saved_handlers
[3].code
= 0;
491 /* Mentioning current_buffer->buffer would mean including buffer.h,
492 which somehow wedges the hp compiler. So instead... */
494 dir
= intern ("default-directory");
495 if (NILP (Fboundp (dir
)))
497 dir
= Fsymbol_value (dir
);
501 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
502 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
504 memcpy (str
, SDATA (dir
), len
);
505 if (str
[len
- 1] != '/') str
[len
++] = '/';
511 save_signal_handlers (saved_handlers
);
512 synch_process_alive
= 1;
516 error ("Can't spawn subshell");
523 #ifdef DOS_NT /* MW, Aug 1993 */
526 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
529 sh
= (char *) egetenv ("SHELL");
533 /* Use our buffer's default directory for the subshell. */
535 if (str
&& chdir ((char *) str
) != 0)
538 ignore_value (write (1, "Can't chdir\n", 12));
543 close_process_descs (); /* Close Emacs's pipes/ptys */
545 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
547 char *epwd
= getenv ("PWD");
548 char old_pwd
[MAXPATHLEN
+1+4];
550 /* If PWD is set, pass it with corrected value. */
553 strcpy (old_pwd
, epwd
);
554 if (str
[len
- 1] == '/')
556 setenv ("PWD", str
, 1);
559 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
561 putenv (old_pwd
); /* restore previous value */
563 #else /* not MSDOS */
565 /* Waits for process completion */
566 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
567 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
569 write (1, "Can't execute subshell", 22);
570 #else /* not WINDOWSNT */
571 execlp (sh
, sh
, (char *) 0);
572 ignore_value (write (1, "Can't execute subshell", 22));
574 #endif /* not WINDOWSNT */
575 #endif /* not MSDOS */
578 /* Do this now if we did not do it before. */
580 save_signal_handlers (saved_handlers
);
581 synch_process_alive
= 1;
585 wait_for_termination (pid
);
587 restore_signal_handlers (saved_handlers
);
588 synch_process_alive
= 0;
592 save_signal_handlers (struct save_signal
*saved_handlers
)
594 while (saved_handlers
->code
)
596 struct sigaction action
;
597 emacs_sigaction_init (&action
, SIG_IGN
);
598 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
604 restore_signal_handlers (struct save_signal
*saved_handlers
)
606 while (saved_handlers
->code
)
608 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
614 static int old_fcntl_flags
[MAXDESC
];
621 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
622 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
623 interrupts_deferred
= 0;
631 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
644 sigemptyset (&unblocked
);
646 sigaddset (&unblocked
, SIGWINCH
);
648 sigaddset (&unblocked
, SIGIO
);
649 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
651 interrupts_deferred
= 0;
656 unrequest_sigio (void)
664 sigemptyset (&blocked
);
666 sigaddset (&blocked
, SIGWINCH
);
668 sigaddset (&blocked
, SIGIO
);
669 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
670 interrupts_deferred
= 1;
678 signal (SIGIO
, SIG_IGN
);
683 /* Saving and restoring the process group of Emacs's terminal. */
685 /* The process group of which Emacs was a member when it initially
688 If Emacs was in its own process group (i.e. inherited_pgroup ==
689 getpid ()), then we know we're running under a shell with job
690 control (Emacs would never be run as part of a pipeline).
693 If Emacs was not in its own process group, then we know we're
694 running under a shell (or a caller) that doesn't know how to
695 separate itself from Emacs (like sh). Emacs must be in its own
696 process group in order to receive SIGIO correctly. In this
697 situation, we put ourselves in our own pgroup, forcibly set the
698 tty's pgroup to our pgroup, and make sure to restore and reinstate
699 the tty's pgroup just like any other terminal setting. If
700 inherited_group was not the tty's pgroup, then we'll get a
701 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
702 it goes foreground in the future, which is what should happen. */
704 static pid_t inherited_pgroup
;
707 init_foreground_group (void)
709 pid_t pgrp
= getpgrp ();
710 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
713 /* Safely set a controlling terminal FD's process group to PGID.
714 If we are not in the foreground already, POSIX requires tcsetpgrp
715 to deliver a SIGTTOU signal, which would stop us. This is an
716 annoyance, so temporarily ignore the signal.
718 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
719 skip all this unless SIGTTOU is defined. */
721 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
724 signal_handler_t handler
;
726 handler
= signal (SIGTTOU
, SIG_IGN
);
727 tcsetpgrp (fd
, pgid
);
728 signal (SIGTTOU
, handler
);
733 /* Split off the foreground process group to Emacs alone. When we are
734 in the foreground, but not started in our own process group,
735 redirect the tty device handle FD to point to our own process
736 group. FD must be the file descriptor of the controlling tty. */
738 narrow_foreground_group (int fd
)
740 if (inherited_pgroup
&& setpgid (0, 0) == 0)
741 tcsetpgrp_without_stopping (fd
, getpid ());
744 /* Set the tty to our original foreground group. */
746 widen_foreground_group (int fd
)
748 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
749 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
752 /* Getting and setting emacs_tty structures. */
754 /* Set *TC to the parameters associated with the terminal FD.
755 Return zero if all's well, or -1 if we ran into an error we
756 couldn't deal with. */
758 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
760 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
762 /* We have those nifty POSIX tcmumbleattr functions. */
763 memset (&settings
->main
, 0, sizeof (settings
->main
));
764 if (tcgetattr (fd
, &settings
->main
) < 0)
768 /* We have survived the tempest. */
773 /* Set the parameters of the tty on FD according to the contents of
774 *SETTINGS. If FLUSHP is non-zero, we discard input.
775 Return 0 if all went well, and -1 if anything failed. */
778 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
780 /* Set the primary parameters - baud rate, character size, etcetera. */
783 /* We have those nifty POSIX tcmumbleattr functions.
784 William J. Smith <wjs@wiis.wang.com> writes:
785 "POSIX 1003.1 defines tcsetattr to return success if it was
786 able to perform any of the requested actions, even if some
787 of the requested actions could not be performed.
788 We must read settings back to ensure tty setup properly.
789 AIX requires this to keep tty from hanging occasionally." */
790 /* This make sure that we don't loop indefinitely in here. */
791 for (i
= 0 ; i
< 10 ; i
++)
792 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
803 memset (&new, 0, sizeof (new));
804 /* Get the current settings, and see if they're what we asked for. */
805 tcgetattr (fd
, &new);
806 /* We cannot use memcmp on the whole structure here because under
807 * aix386 the termios structure has some reserved field that may
810 if ( new.c_iflag
== settings
->main
.c_iflag
811 && new.c_oflag
== settings
->main
.c_oflag
812 && new.c_cflag
== settings
->main
.c_cflag
813 && new.c_lflag
== settings
->main
.c_lflag
814 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
821 /* We have survived the tempest. */
828 static int old_fcntl_owner
[MAXDESC
];
829 #endif /* F_SETOWN */
831 /* This may also be defined in stdio,
832 but if so, this does no harm,
833 and using the same name avoids wasting the other one's space. */
836 unsigned char _sobuf
[BUFSIZ
+8];
841 /* Initialize the terminal mode on all tty devices that are currently
845 init_all_sys_modes (void)
847 struct tty_display_info
*tty
;
848 for (tty
= tty_list
; tty
; tty
= tty
->next
)
849 init_sys_modes (tty
);
852 /* Initialize the terminal mode on the given tty device. */
855 init_sys_modes (struct tty_display_info
*tty_out
)
857 struct emacs_tty tty
;
858 Lisp_Object terminal
;
860 Vtty_erase_char
= Qnil
;
865 if (!tty_out
->output
)
866 return; /* The tty is suspended. */
868 narrow_foreground_group (fileno (tty_out
->input
));
870 if (! tty_out
->old_tty
)
871 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
873 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
875 tty
= *tty_out
->old_tty
;
877 #if !defined (DOS_NT)
878 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
880 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
881 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
882 #ifdef INLCR /* I'm just being cautious,
883 since I can't check how widespread INLCR is--rms. */
884 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
887 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
889 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
890 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
892 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
894 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
895 if (tty_out
->flow_control
)
897 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
899 tty
.main
.c_iflag
&= ~IXANY
;
903 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
904 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
906 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
908 if (tty_out
->meta_key
)
910 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
911 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
915 XSETTERMINAL(terminal
, tty_out
->terminal
);
916 if (!NILP (Fcontrolling_tty_p (terminal
)))
918 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
919 /* Set up C-g for both SIGQUIT and SIGINT.
920 We don't know which we will get, but we handle both alike
921 so which one it really gives us does not matter. */
922 tty
.main
.c_cc
[VQUIT
] = quit_char
;
926 /* We normally don't get interrupt or quit signals from tty
927 devices other than our controlling terminal; therefore,
928 we must handle C-g as normal input. Unfortunately, this
929 means that the interrupt and quit feature must be
930 disabled on secondary ttys, or we would not even see the
933 Note that even though emacsclient could have special code
934 to pass SIGINT to Emacs, we should _not_ enable
935 interrupt/quit keys for emacsclient frames. This means
936 that we can't break out of loops in C code from a
937 secondary tty frame, but we can always decide what
938 display the C-g came from, which is more important from a
939 usability point of view. (Consider the case when two
940 people work together using the same Emacs instance.) */
941 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
942 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
944 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
945 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
947 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
952 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
955 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
957 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
958 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
961 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
964 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
965 #endif /* VREPRINT */
967 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
970 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
971 #endif /* VDISCARD */
973 if (tty_out
->flow_control
)
976 tty
.main
.c_cc
[VSTART
] = '\021';
979 tty
.main
.c_cc
[VSTOP
] = '\023';
985 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
988 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
993 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
994 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
995 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
996 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
997 if (tty_out
->flow_control
)
1000 tty
.main
.c_cc
[VSTART
] = '\021';
1003 tty
.main
.c_cc
[VSTOP
] = '\023';
1006 /* Also, PTY overloads NUL and BREAK.
1007 don't ignore break, but don't signal either, so it looks like NUL.
1008 This really serves a purpose only if running in an XTERM window
1009 or via TELNET or the like, but does no harm elsewhere. */
1010 tty
.main
.c_iflag
&= ~IGNBRK
;
1011 tty
.main
.c_iflag
&= ~BRKINT
;
1013 #endif /* not DOS_NT */
1015 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1016 if (!tty_out
->term_initted
)
1017 internal_terminal_init ();
1018 dos_ttraw (tty_out
);
1021 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1023 /* This code added to insure that, if flow-control is not to be used,
1024 we have an unlocked terminal at the start. */
1027 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1030 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1033 #if !defined (DOS_NT)
1035 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1040 if (interrupt_input
)
1042 old_fcntl_owner
[fileno (tty_out
->input
)] =
1043 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1044 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1045 init_sigio (fileno (tty_out
->input
));
1047 if (gpm_tty
== tty_out
)
1049 /* Arrange for mouse events to give us SIGIO signals. */
1050 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1051 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1052 init_sigio (gpm_fd
);
1054 #endif /* HAVE_GPM */
1056 #endif /* F_GETOWN */
1059 /* This symbol is defined on recent USG systems.
1060 Someone says without this call USG won't really buffer the file
1061 even with a call to setbuf. */
1062 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1064 setbuf (tty_out
->output
, (char *) _sobuf
);
1067 if (tty_out
->terminal
->set_terminal_modes_hook
)
1068 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1070 if (!tty_out
->term_initted
)
1072 Lisp_Object tail
, frame
;
1073 FOR_EACH_FRAME (tail
, frame
)
1075 /* XXX This needs to be revised. */
1076 if (FRAME_TERMCAP_P (XFRAME (frame
))
1077 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1078 init_frame_faces (XFRAME (frame
));
1082 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1084 /* We used to call "direct_output_forward_char(0)" here,
1085 but it's not clear why, since it may not do anything anyway. */
1089 Lisp_Object tail
, frame
;
1091 FOR_EACH_FRAME (tail
, frame
)
1093 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1094 || FRAME_MSDOS_P (XFRAME (frame
)))
1095 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1096 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1100 tty_out
->term_initted
= 1;
1103 /* Return nonzero if safe to use tabs in output.
1104 At the time this is called, init_sys_modes has not been done yet. */
1107 tabs_safe_p (int fd
)
1109 struct emacs_tty etty
;
1111 emacs_get_tty (fd
, &etty
);
1114 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1115 #else /* not TABDLY */
1117 #endif /* not TABDLY */
1123 /* Get terminal size from system.
1124 Store number of lines into *HEIGHTP and width into *WIDTHP.
1125 We store 0 if there's no valid information. */
1128 get_tty_size (int fd
, int *widthp
, int *heightp
)
1130 #if defined TIOCGWINSZ
1133 struct winsize size
;
1135 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1136 *widthp
= *heightp
= 0;
1139 *widthp
= size
.ws_col
;
1140 *heightp
= size
.ws_row
;
1143 #elif defined TIOCGSIZE
1145 /* SunOS - style. */
1146 struct ttysize size
;
1148 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1149 *widthp
= *heightp
= 0;
1152 *widthp
= size
.ts_cols
;
1153 *heightp
= size
.ts_lines
;
1156 #elif defined WINDOWSNT
1158 CONSOLE_SCREEN_BUFFER_INFO info
;
1159 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1161 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1162 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1165 *widthp
= *heightp
= 0;
1169 *widthp
= ScreenCols ();
1170 *heightp
= ScreenRows ();
1172 #else /* system doesn't know size */
1180 /* Set the logical window size associated with descriptor FD
1181 to HEIGHT and WIDTH. This is used mainly with ptys. */
1184 set_window_size (int fd
, int height
, int width
)
1189 struct winsize size
;
1190 size
.ws_row
= height
;
1191 size
.ws_col
= width
;
1193 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1194 return 0; /* error */
1201 /* SunOS - style. */
1202 struct ttysize size
;
1203 size
.ts_lines
= height
;
1204 size
.ts_cols
= width
;
1206 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1212 #endif /* not SunOS-style */
1213 #endif /* not BSD-style */
1218 /* Prepare all terminal devices for exiting Emacs. */
1221 reset_all_sys_modes (void)
1223 struct tty_display_info
*tty
;
1224 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1225 reset_sys_modes (tty
);
1228 /* Prepare the terminal for closing it; move the cursor to the
1229 bottom of the frame, turn off interrupt-driven I/O, etc. */
1232 reset_sys_modes (struct tty_display_info
*tty_out
)
1239 if (!tty_out
->term_initted
)
1242 if (!tty_out
->output
)
1243 return; /* The tty is suspended. */
1245 /* Go to and clear the last line of the terminal. */
1247 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1249 /* Code adapted from tty_clear_end_of_line. */
1250 if (tty_out
->TS_clr_line
)
1252 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1255 { /* have to do it the hard way */
1257 tty_turn_off_insert (tty_out
);
1259 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1261 fputc (' ', tty_out
->output
);
1265 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1266 fflush (tty_out
->output
);
1268 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1269 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1272 /* Avoid possible loss of output when changing terminal modes. */
1273 fsync (fileno (tty_out
->output
));
1278 if (interrupt_input
)
1280 reset_sigio (fileno (tty_out
->input
));
1281 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1282 old_fcntl_owner
[fileno (tty_out
->input
)]);
1284 #endif /* F_SETOWN */
1285 fcntl (fileno (tty_out
->input
), F_SETFL
,
1286 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1289 if (tty_out
->old_tty
)
1290 while (emacs_set_tty (fileno (tty_out
->input
),
1291 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1294 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1298 widen_foreground_group (fileno (tty_out
->input
));
1303 /* Set up the proper status flags for use of a pty. */
1308 /* I'm told that TOICREMOTE does not mean control chars
1309 "can't be sent" but rather that they don't have
1310 input-editing or signaling effects.
1311 That should be good, because we have other ways
1312 to do those things in Emacs.
1313 However, telnet mode seems not to work on 4.2.
1314 So TIOCREMOTE is turned off now. */
1316 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1317 will hang. In particular, the "timeout" feature (which
1318 causes a read to return if there is no data available)
1319 does this. Also it is known that telnet mode will hang
1320 in such a way that Emacs must be stopped (perhaps this
1321 is the same problem).
1323 If TIOCREMOTE is turned off, then there is a bug in
1324 hp-ux which sometimes loses data. Apparently the
1325 code which blocks the master process when the internal
1326 buffer fills up does not work. Other than this,
1327 though, everything else seems to work fine.
1329 Since the latter lossage is more benign, we may as well
1330 lose that way. -- cph */
1332 #if defined (UNIX98_PTYS)
1335 ioctl (fd
, FIONBIO
, &on
);
1340 #endif /* HAVE_PTYS */
1343 #include <sys/socket.h>
1345 #endif /* HAVE_SOCKETS */
1348 #ifndef HAVE_H_ERRNO
1351 #endif /* TRY_AGAIN */
1354 init_system_name (void)
1356 #ifndef HAVE_GETHOSTNAME
1359 Vsystem_name
= build_string (uts
.nodename
);
1360 #else /* HAVE_GETHOSTNAME */
1361 unsigned int hostname_size
= 256;
1362 char *hostname
= alloca (hostname_size
);
1364 /* Try to get the host name; if the buffer is too short, try
1365 again. Apparently, the only indication gethostname gives of
1366 whether the buffer was large enough is the presence or absence
1367 of a '\0' in the string. Eech. */
1370 gethostname (hostname
, hostname_size
- 1);
1371 hostname
[hostname_size
- 1] = '\0';
1373 /* Was the buffer large enough for the '\0'? */
1374 if (strlen (hostname
) < hostname_size
- 1)
1377 hostname_size
<<= 1;
1378 hostname
= alloca (hostname_size
);
1381 /* Turn the hostname into the official, fully-qualified hostname.
1382 Don't do this if we're going to dump; this can confuse system
1383 libraries on some machines and make the dumped emacs core dump. */
1386 #endif /* not CANNOT_DUMP */
1387 if (! strchr (hostname
, '.'))
1390 #ifdef HAVE_GETADDRINFO
1391 struct addrinfo
*res
;
1392 struct addrinfo hints
;
1395 memset (&hints
, 0, sizeof (hints
));
1396 hints
.ai_socktype
= SOCK_STREAM
;
1397 hints
.ai_flags
= AI_CANONNAME
;
1399 for (count
= 0;; count
++)
1401 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1402 || ret
!= EAI_AGAIN
)
1407 Fsleep_for (make_number (1), Qnil
);
1412 struct addrinfo
*it
= res
;
1415 char *fqdn
= it
->ai_canonname
;
1416 if (fqdn
&& strchr (fqdn
, '.')
1417 && strcmp (fqdn
, "localhost.localdomain") != 0)
1423 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1424 strcpy (hostname
, it
->ai_canonname
);
1428 #else /* !HAVE_GETADDRINFO */
1430 for (count
= 0;; count
++)
1436 hp
= gethostbyname (hostname
);
1438 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1445 Fsleep_for (make_number (1), Qnil
);
1450 char *fqdn
= (char *) hp
->h_name
;
1452 if (!strchr (fqdn
, '.'))
1454 /* We still don't have a fully qualified domain name.
1455 Try to find one in the list of alternate names */
1456 char **alias
= hp
->h_aliases
;
1458 && (!strchr (*alias
, '.')
1459 || !strcmp (*alias
, "localhost.localdomain")))
1466 #endif /* !HAVE_GETADDRINFO */
1468 #endif /* HAVE_SOCKETS */
1469 Vsystem_name
= build_string (hostname
);
1470 #endif /* HAVE_GETHOSTNAME */
1473 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1474 if (*p
== ' ' || *p
== '\t')
1479 sigset_t empty_mask
;
1481 static struct sigaction process_fatal_action
;
1484 emacs_sigaction_flags (void)
1487 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1488 'select') to reset their timeout on some platforms (e.g.,
1489 HP-UX 11), which is not what we want. Also, when Emacs is
1490 interactive, we don't want SA_RESTART because we need to poll
1491 for pending input so we need long-running syscalls to be interrupted
1492 after a signal that sets pending_signals.
1494 Non-interactive keyboard input goes through stdio, where we
1495 always want restartable system calls. */
1502 /* Store into *ACTION a signal action suitable for Emacs, with handler
1505 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1507 sigemptyset (&action
->sa_mask
);
1509 /* When handling a signal, block nonfatal system signals that are caught
1510 by Emacs. This makes race conditions less likely. */
1511 sigaddset (&action
->sa_mask
, SIGALRM
);
1513 sigaddset (&action
->sa_mask
, SIGCHLD
);
1516 sigaddset (&action
->sa_mask
, SIGDANGER
);
1518 #ifdef PROFILER_CPU_SUPPORT
1519 sigaddset (&action
->sa_mask
, SIGPROF
);
1522 sigaddset (&action
->sa_mask
, SIGWINCH
);
1524 if (! noninteractive
)
1526 sigaddset (&action
->sa_mask
, SIGINT
);
1527 sigaddset (&action
->sa_mask
, SIGQUIT
);
1529 sigaddset (&action
->sa_mask
, SIGIO
);
1533 if (! IEEE_FLOATING_POINT
)
1534 sigaddset (&action
->sa_mask
, SIGFPE
);
1536 action
->sa_handler
= handler
;
1537 action
->sa_flags
= emacs_sigaction_flags ();
1540 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1541 static pthread_t main_thread
;
1544 /* SIG has arrived at the current process. Deliver it to the main
1545 thread, which should handle it with HANDLER.
1547 If we are on the main thread, handle the signal SIG with HANDLER.
1548 Otherwise, redirect the signal to the main thread, blocking it from
1549 this thread. POSIX says any thread can receive a signal that is
1550 associated with a process, process group, or asynchronous event.
1551 On GNU/Linux that is not true, but for other systems (FreeBSD at
1554 deliver_process_signal (int sig
, signal_handler_t handler
)
1556 /* Preserve errno, to avoid race conditions with signal handlers that
1557 might change errno. Races can occur even in single-threaded hosts. */
1558 int old_errno
= errno
;
1560 bool on_main_thread
= true;
1561 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1562 if (! pthread_equal (pthread_self (), main_thread
))
1565 sigemptyset (&blocked
);
1566 sigaddset (&blocked
, sig
);
1567 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1568 pthread_kill (main_thread
, sig
);
1569 on_main_thread
= false;
1578 /* Static location to save a fatal backtrace in a thread.
1579 FIXME: If two subsidiary threads fail simultaneously, the resulting
1580 backtrace may be garbage. */
1581 enum { BACKTRACE_LIMIT_MAX
= 500 };
1582 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1583 static int thread_backtrace_npointers
;
1585 /* SIG has arrived at the current thread.
1586 If we are on the main thread, handle the signal SIG with HANDLER.
1587 Otherwise, this is a fatal error in the handling thread. */
1589 deliver_thread_signal (int sig
, signal_handler_t handler
)
1591 int old_errno
= errno
;
1593 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1594 if (! pthread_equal (pthread_self (), main_thread
))
1596 thread_backtrace_npointers
1597 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1598 sigaction (sig
, &process_fatal_action
, 0);
1599 pthread_kill (main_thread
, sig
);
1601 /* Avoid further damage while the main thread is exiting. */
1603 sigsuspend (&empty_mask
);
1611 #if !HAVE_DECL_SYS_SIGLIST
1613 # ifdef _sys_siglist
1614 # define sys_siglist _sys_siglist
1616 # define sys_siglist my_sys_siglist
1617 static char const *sys_siglist
[NSIG
];
1622 # define sys_siglist_entries _sys_nsig
1624 # define sys_siglist_entries NSIG
1627 /* Handle bus errors, invalid instruction, etc. */
1629 handle_fatal_signal (int sig
)
1631 terminate_due_to_signal (sig
, 40);
1635 deliver_fatal_signal (int sig
)
1637 deliver_process_signal (sig
, handle_fatal_signal
);
1641 deliver_fatal_thread_signal (int sig
)
1643 deliver_thread_signal (sig
, handle_fatal_signal
);
1646 static _Noreturn
void
1647 handle_arith_signal (int sig
)
1649 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1650 xsignal0 (Qarith_error
);
1654 deliver_arith_signal (int sig
)
1656 deliver_thread_signal (sig
, handle_arith_signal
);
1659 /* Treat SIG as a terminating signal, unless it is already ignored and
1660 we are in --batch mode. Among other things, this makes nohup work. */
1662 maybe_fatal_sig (int sig
)
1664 bool catch_sig
= !noninteractive
;
1667 struct sigaction old_action
;
1668 sigaction (sig
, 0, &old_action
);
1669 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1672 sigaction (sig
, &process_fatal_action
, 0);
1676 init_signals (bool dumping
)
1678 struct sigaction thread_fatal_action
;
1679 struct sigaction action
;
1681 sigemptyset (&empty_mask
);
1683 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1684 main_thread
= pthread_self ();
1687 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1690 sys_siglist
[SIGABRT
] = "Aborted";
1692 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1695 sys_siglist
[SIGALRM
] = "Alarm clock";
1698 sys_siglist
[SIGBUS
] = "Bus error";
1701 sys_siglist
[SIGCLD
] = "Child status changed";
1704 sys_siglist
[SIGCHLD
] = "Child status changed";
1707 sys_siglist
[SIGCONT
] = "Continued";
1710 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1713 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1716 sys_siglist
[SIGEMT
] = "Emulation trap";
1718 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1720 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1723 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1726 sys_siglist
[SIGHUP
] = "Hangup";
1728 sys_siglist
[SIGILL
] = "Illegal instruction";
1729 sys_siglist
[SIGINT
] = "Interrupt";
1731 sys_siglist
[SIGIO
] = "I/O possible";
1734 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1737 sys_siglist
[SIGIOT
] = "IOT trap";
1740 sys_siglist
[SIGKILL
] = "Killed";
1743 sys_siglist
[SIGLOST
] = "Resource lost";
1746 sys_siglist
[SIGLWP
] = "SIGLWP";
1749 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1752 sys_siglist
[SIGWIND
] = "SIGPHONE";
1755 sys_siglist
[SIGPIPE
] = "Broken pipe";
1758 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1761 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1764 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1767 sys_siglist
[SIGPWR
] = "Power-fail restart";
1770 sys_siglist
[SIGQUIT
] = "Quit";
1773 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1776 sys_siglist
[SIGSAK
] = "Secure attention";
1778 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1780 sys_siglist
[SIGSOUND
] = "Sound completed";
1783 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1786 sys_siglist
[SIGSTP
] = "Stopped (user)";
1789 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1791 sys_siglist
[SIGTERM
] = "Terminated";
1793 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1796 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1799 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1802 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1805 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1808 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1811 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1814 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1817 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1820 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1823 sys_siglist
[SIGWINCH
] = "Window size changed";
1826 sys_siglist
[SIGWIND
] = "SIGWIND";
1829 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1832 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1835 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1837 /* Don't alter signal handlers if dumping. On some machines,
1838 changing signal handlers sets static data that would make signals
1839 fail to work right when the dumped Emacs is run. */
1843 sigfillset (&process_fatal_action
.sa_mask
);
1844 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1845 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1847 sigfillset (&thread_fatal_action
.sa_mask
);
1848 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1849 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1851 /* SIGINT may need special treatment on MS-Windows. See
1852 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1853 Please update the doc of kill-emacs, kill-emacs-hook, and
1854 NEWS if you change this. */
1856 maybe_fatal_sig (SIGHUP
);
1857 maybe_fatal_sig (SIGINT
);
1858 maybe_fatal_sig (SIGTERM
);
1860 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1861 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1862 to behave more like typical batch applications do. */
1863 if (! noninteractive
)
1864 signal (SIGPIPE
, SIG_IGN
);
1866 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1867 sigaction (SIGILL
, &thread_fatal_action
, 0);
1868 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1870 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1871 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1872 interpreter's floating point operations, so treat SIGFPE as an
1873 arith-error if it arises in the main thread. */
1874 if (IEEE_FLOATING_POINT
)
1875 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1878 emacs_sigaction_init (&action
, deliver_arith_signal
);
1879 sigaction (SIGFPE
, &action
, 0);
1883 add_user_signal (SIGUSR1
, "sigusr1");
1886 add_user_signal (SIGUSR2
, "sigusr2");
1888 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1890 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1893 sigaction (SIGORE
, &thread_fatal_action
, 0);
1896 sigaction (SIGUME
, &thread_fatal_action
, 0);
1899 sigaction (SIGDLK
, &process_fatal_action
, 0);
1902 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1905 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1908 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1911 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1913 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1915 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1917 sigaction (SIGTERM
, &process_fatal_action
, 0);
1919 signal (SIGPROF
, SIG_IGN
);
1922 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1925 sigaction (SIGXCPU
, &process_fatal_action
, 0);
1928 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1932 /* This just means available memory is getting low. */
1933 emacs_sigaction_init (&action
, deliver_danger_signal
);
1934 sigaction (SIGDANGER
, &action
, 0);
1937 /* AIX-specific signals. */
1939 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1942 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1945 sigaction (SIGMSG
, &process_fatal_action
, 0);
1948 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1951 sigaction (SIGSAK
, &process_fatal_action
, 0);
1954 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1957 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1967 /* Figure out how many bits the system's random number generator uses.
1968 `random' and `lrand48' are assumed to return 31 usable bits.
1969 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1970 so we'll shift it and treat it like the 15-bit USG `rand'. */
1974 # define RAND_BITS 31
1975 # else /* !HAVE_RANDOM */
1976 # ifdef HAVE_LRAND48
1977 # define RAND_BITS 31
1978 # define random lrand48
1979 # else /* !HAVE_LRAND48 */
1980 # define RAND_BITS 15
1981 # if RAND_MAX == 32767
1982 # define random rand
1983 # else /* RAND_MAX != 32767 */
1984 # if RAND_MAX == 2147483647
1985 # define random() (rand () >> 16)
1986 # else /* RAND_MAX != 2147483647 */
1988 # define random rand
1990 # define random() (rand () >> 16)
1992 # endif /* RAND_MAX != 2147483647 */
1993 # endif /* RAND_MAX != 32767 */
1994 # endif /* !HAVE_LRAND48 */
1995 # endif /* !HAVE_RANDOM */
1996 #endif /* !RAND_BITS */
1999 seed_random (void *seed
, ptrdiff_t seed_size
)
2001 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2002 unsigned int arg
= 0;
2006 unsigned char *argp
= (unsigned char *) &arg
;
2007 unsigned char *seedp
= seed
;
2009 for (i
= 0; i
< seed_size
; i
++)
2010 argp
[i
% sizeof arg
] ^= seedp
[i
];
2014 # ifdef HAVE_LRAND48
2025 EMACS_TIME t
= current_emacs_time ();
2026 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
2027 seed_random (&v
, sizeof v
);
2031 * Return a nonnegative random integer out of whatever we've got.
2032 * It contains enough bits to make a random (signed) Emacs fixnum.
2033 * This suffices even for a 64-bit architecture with a 15-bit rand.
2040 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2041 val
= (random () ^ (val
<< RAND_BITS
)
2042 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2043 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2044 return val
& INTMASK
;
2047 #ifndef HAVE_SNPRINTF
2048 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2050 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2052 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2053 ptrdiff_t nbytes
= size
- 1;
2058 va_start (ap
, format
);
2059 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2063 if (nbytes
== size
- 1)
2065 /* Calculate the length of the string that would have been created
2066 had the buffer been large enough. */
2067 char stackbuf
[4000];
2069 ptrdiff_t bsize
= sizeof stackbuf
;
2070 va_start (ap
, format
);
2071 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2077 if (INT_MAX
< nbytes
)
2090 /* If a backtrace is available, output the top lines of it to stderr.
2091 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2092 This function may be called from a signal handler, so it should
2093 not invoke async-unsafe functions like malloc. */
2095 emacs_backtrace (int backtrace_limit
)
2097 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2098 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2102 if (thread_backtrace_npointers
)
2104 buffer
= thread_backtrace_buffer
;
2105 npointers
= thread_backtrace_npointers
;
2109 buffer
= main_backtrace_buffer
;
2110 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2115 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
2116 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2117 if (bounded_limit
< npointers
)
2118 ignore_value (write (STDERR_FILENO
, "...\n", 4));
2126 terminate_due_to_signal (SIGABRT
, 10);
2131 emacs_open (const char *path
, int oflag
, int mode
)
2133 register int rtnval
;
2135 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2136 && (errno
== EINTR
))
2142 emacs_close (int fd
)
2145 register int rtnval
;
2147 while ((rtnval
= close (fd
)) == -1
2148 && (errno
== EINTR
))
2151 /* If close is interrupted SunOS 4.1 may or may not have closed the
2152 file descriptor. If it did the second close will fail with
2153 errno = EBADF. That means we have succeeded. */
2154 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2160 /* Maximum number of bytes to read or write in a single system call.
2161 This works around a serious bug in Linux kernels before 2.6.16; see
2162 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2163 It's likely to work around similar bugs in other operating systems, so do it
2164 on all platforms. Round INT_MAX down to a page size, with the conservative
2165 assumption that page sizes are at most 2**18 bytes (any kernel with a
2166 page size larger than that shouldn't have the bug). */
2167 #ifndef MAX_RW_COUNT
2168 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2171 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2172 Return the number of bytes read, which might be less than NBYTE.
2173 On error, set errno and return -1. */
2175 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
2177 register ssize_t rtnval
;
2179 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2180 passes a size that large to emacs_read. */
2182 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2183 && (errno
== EINTR
))
2188 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2189 or if a partial write occurs. Return the number of bytes written, setting
2190 errno if this is less than NBYTE. */
2192 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
2195 ptrdiff_t bytes_written
;
2201 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2207 /* I originally used `QUIT' but that might causes files to
2208 be truncated if you hit C-g in the middle of it. --Stef */
2209 if (pending_signals
)
2210 process_pending_signals ();
2219 bytes_written
+= rtnval
;
2222 return (bytes_written
);
2225 static struct allocator
const emacs_norealloc_allocator
=
2226 { xmalloc
, NULL
, xfree
, memory_full
};
2228 /* Get the symbolic link value of FILENAME. Return a pointer to a
2229 NUL-terminated string. If readlink fails, return NULL and set
2230 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
2231 Otherwise, allocate memory and return a pointer to that memory. If
2232 memory allocation fails, diagnose and fail without returning. If
2233 successful, store the length of the symbolic link into *LINKLEN. */
2235 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
2237 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
2238 &emacs_norealloc_allocator
, careadlinkatcwd
);
2243 * All of the following are for USG.
2245 * On USG systems the system calls are INTERRUPTIBLE by signals
2246 * that the user program has elected to catch. Thus the system call
2247 * must be retried in these cases. To handle this without massive
2248 * changes in the source code, we remap the standard system call names
2249 * to names for our own functions in sysdep.c that do the system call
2250 * with retries. Actually, for portability reasons, it is good
2251 * programming practice, as this example shows, to limit all actual
2252 * system calls to a single occurrence in the source. Sure, this
2253 * adds an extra level of function call overhead but it is almost
2254 * always negligible. Fred Fish, Unisoft Systems Inc.
2258 * Warning, this function may not duplicate 4.2 action properly
2259 * under error conditions.
2262 #if !defined (HAVE_GETWD) || defined (BROKEN_GETWD)
2265 /* In 4.1, param.h fails to define this. */
2266 #define MAXPATHLEN 1024
2270 getwd (char *pathname
)
2272 char *npath
, *spath
;
2273 extern char *getcwd (char *, size_t);
2275 block_input (); /* getcwd uses malloc */
2276 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
2282 /* On Altos 3068, getcwd can return @hostname/dir, so discard
2283 up to first slash. Should be harmless on other systems. */
2284 while (*npath
&& *npath
!= '/')
2286 strcpy (pathname
, npath
);
2287 free (spath
); /* getcwd uses malloc */
2292 #endif /* !defined (HAVE_GETWD) || defined (BROKEN_GETWD) */
2295 /* Directory routines for systems that don't have them. */
2297 #ifdef HAVE_DIRENT_H
2301 #if !defined (HAVE_CLOSEDIR)
2304 closedir (DIR *dirp
/* stream from opendir */)
2308 rtnval
= emacs_close (dirp
->dd_fd
);
2313 #endif /* not HAVE_CLOSEDIR */
2314 #endif /* HAVE_DIRENT_H */
2317 /* Return a struct timeval that is roughly equivalent to T.
2318 Use the least timeval not less than T.
2319 Return an extremal value if the result would overflow. */
2321 make_timeval (EMACS_TIME t
)
2324 tv
.tv_sec
= t
.tv_sec
;
2325 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2327 if (t
.tv_nsec
% 1000 != 0)
2329 if (tv
.tv_usec
< 999999)
2331 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2341 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2342 ATIME and MTIME, respectively.
2343 FD must be either negative -- in which case it is ignored --
2344 or a file descriptor that is open on FILE.
2345 If FD is nonnegative, then FILE can be NULL. */
2347 set_file_times (int fd
, const char *filename
,
2348 EMACS_TIME atime
, EMACS_TIME mtime
)
2350 struct timespec timespec
[2];
2351 timespec
[0] = atime
;
2352 timespec
[1] = mtime
;
2353 return fdutimens (fd
, filename
, timespec
);
2356 /* Like strsignal, except async-signal-safe, and this function typically
2357 returns a string in the C locale rather than the current locale. */
2359 safe_strsignal (int code
)
2361 char const *signame
= 0;
2363 if (0 <= code
&& code
< sys_siglist_entries
)
2364 signame
= sys_siglist
[code
];
2366 signame
= "Unknown signal";
2372 /* For make-serial-process */
2374 serial_open (char *port
)
2376 int fd
= emacs_open (port
, O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2379 error ("Could not open %s: %s",
2380 port
, emacs_strerror (errno
));
2383 ioctl (fd
, TIOCEXCL
, (char *) 0);
2389 #if !defined (HAVE_CFMAKERAW)
2390 /* Workaround for targets which are missing cfmakeraw. */
2391 /* Pasted from man page. */
2393 cfmakeraw (struct termios
*termios_p
)
2395 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2396 termios_p
->c_oflag
&= ~OPOST
;
2397 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2398 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2399 termios_p
->c_cflag
|= CS8
;
2401 #endif /* !defined (HAVE_CFMAKERAW */
2403 #if !defined (HAVE_CFSETSPEED)
2404 /* Workaround for targets which are missing cfsetspeed. */
2406 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2408 return (cfsetispeed (termios_p
, vitesse
)
2409 + cfsetospeed (termios_p
, vitesse
));
2413 /* For serial-process-configure */
2415 serial_configure (struct Lisp_Process
*p
,
2416 Lisp_Object contact
)
2418 Lisp_Object childp2
= Qnil
;
2419 Lisp_Object tem
= Qnil
;
2420 struct termios attr
;
2422 char summary
[4] = "???"; /* This usually becomes "8N1". */
2424 childp2
= Fcopy_sequence (p
->childp
);
2426 /* Read port attributes and prepare default configuration. */
2427 err
= tcgetattr (p
->outfd
, &attr
);
2429 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2431 #if defined (CLOCAL)
2432 attr
.c_cflag
|= CLOCAL
;
2435 attr
.c_cflag
|= CREAD
;
2438 /* Configure speed. */
2439 if (!NILP (Fplist_member (contact
, QCspeed
)))
2440 tem
= Fplist_get (contact
, QCspeed
);
2442 tem
= Fplist_get (p
->childp
, QCspeed
);
2444 err
= cfsetspeed (&attr
, XINT (tem
));
2446 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2447 emacs_strerror (errno
));
2448 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2450 /* Configure bytesize. */
2451 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2452 tem
= Fplist_get (contact
, QCbytesize
);
2454 tem
= Fplist_get (p
->childp
, QCbytesize
);
2456 tem
= make_number (8);
2458 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2459 error (":bytesize must be nil (8), 7, or 8");
2460 summary
[0] = XINT (tem
) + '0';
2461 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2462 attr
.c_cflag
&= ~CSIZE
;
2463 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2465 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2466 if (XINT (tem
) != 8)
2467 error ("Bytesize cannot be changed");
2469 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2471 /* Configure parity. */
2472 if (!NILP (Fplist_member (contact
, QCparity
)))
2473 tem
= Fplist_get (contact
, QCparity
);
2475 tem
= Fplist_get (p
->childp
, QCparity
);
2476 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2477 error (":parity must be nil (no parity), `even', or `odd'");
2478 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2479 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2480 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2485 else if (EQ (tem
, Qeven
))
2488 attr
.c_cflag
|= PARENB
;
2489 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2491 else if (EQ (tem
, Qodd
))
2494 attr
.c_cflag
|= (PARENB
| PARODD
);
2495 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2498 /* Don't error on no parity, which should be set by cfmakeraw. */
2500 error ("Parity cannot be configured");
2502 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2504 /* Configure stopbits. */
2505 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2506 tem
= Fplist_get (contact
, QCstopbits
);
2508 tem
= Fplist_get (p
->childp
, QCstopbits
);
2510 tem
= make_number (1);
2512 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2513 error (":stopbits must be nil (1 stopbit), 1, or 2");
2514 summary
[2] = XINT (tem
) + '0';
2515 #if defined (CSTOPB)
2516 attr
.c_cflag
&= ~CSTOPB
;
2517 if (XINT (tem
) == 2)
2518 attr
.c_cflag
|= CSTOPB
;
2520 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2521 if (XINT (tem
) != 1)
2522 error ("Stopbits cannot be configured");
2524 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2526 /* Configure flowcontrol. */
2527 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2528 tem
= Fplist_get (contact
, QCflowcontrol
);
2530 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2531 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2532 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2533 #if defined (CRTSCTS)
2534 attr
.c_cflag
&= ~CRTSCTS
;
2536 #if defined (CNEW_RTSCTS)
2537 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2539 #if defined (IXON) && defined (IXOFF)
2540 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2544 /* Already configured. */
2546 else if (EQ (tem
, Qhw
))
2548 #if defined (CRTSCTS)
2549 attr
.c_cflag
|= CRTSCTS
;
2550 #elif defined (CNEW_RTSCTS)
2551 attr
.c_cflag
|= CNEW_RTSCTS
;
2553 error ("Hardware flowcontrol (RTS/CTS) not supported");
2556 else if (EQ (tem
, Qsw
))
2558 #if defined (IXON) && defined (IXOFF)
2559 attr
.c_iflag
|= (IXON
| IXOFF
);
2561 error ("Software flowcontrol (XON/XOFF) not supported");
2564 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2566 /* Activate configuration. */
2567 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2569 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2571 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2572 pset_childp (p
, childp2
);
2574 #endif /* not DOS_NT */
2576 /* System depended enumeration of and access to system processes a-la ps(1). */
2580 /* Process enumeration and access via /proc. */
2583 list_system_processes (void)
2585 Lisp_Object procdir
, match
, proclist
, next
;
2586 struct gcpro gcpro1
, gcpro2
;
2587 register Lisp_Object tail
;
2589 GCPRO2 (procdir
, match
);
2590 /* For every process on the system, there's a directory in the
2591 "/proc" pseudo-directory whose name is the numeric ID of that
2593 procdir
= build_string ("/proc");
2594 match
= build_string ("[0-9]+");
2595 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2597 /* `proclist' gives process IDs as strings. Destructively convert
2598 each string into a number. */
2599 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2602 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2606 /* directory_files_internal returns the files in reverse order; undo
2608 proclist
= Fnreverse (proclist
);
2612 #elif defined BSD_SYSTEM
2615 list_system_processes (void)
2617 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
2618 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2620 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2623 struct kinfo_proc
*procs
;
2626 struct gcpro gcpro1
;
2627 Lisp_Object proclist
= Qnil
;
2629 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2632 procs
= xmalloc (len
);
2633 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2640 len
/= sizeof (struct kinfo_proc
);
2641 for (i
= 0; i
< len
; i
++)
2643 #if defined DARWIN_OS || defined __NetBSD__
2644 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2645 #elif defined __OpenBSD__
2646 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2648 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2658 /* The WINDOWSNT implementation is in w32.c.
2659 The MSDOS implementation is in dosfns.c. */
2660 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2663 list_system_processes (void)
2668 #endif /* !defined (WINDOWSNT) */
2672 time_from_jiffies (unsigned long long tval
, long hz
)
2674 unsigned long long s
= tval
/ hz
;
2675 unsigned long long frac
= tval
% hz
;
2678 if (TYPE_MAXIMUM (time_t) < s
)
2680 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2681 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2682 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2685 /* This is reachable only in the unlikely case that HZ * HZ
2686 exceeds ULLONG_MAX. It calculates an approximation that is
2687 guaranteed to be in range. */
2688 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2689 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2690 ns
= frac
/ hz_per_ns
;
2693 return make_emacs_time (s
, ns
);
2697 ltime_from_jiffies (unsigned long long tval
, long hz
)
2699 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2700 return make_lisp_time (t
);
2707 EMACS_TIME up
= make_emacs_time (0, 0);
2710 fup
= fopen ("/proc/uptime", "r");
2714 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2715 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2717 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2718 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2719 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2722 if (TYPE_MAXIMUM (time_t) < upsec
)
2724 upsec
= TYPE_MAXIMUM (time_t);
2725 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2729 int upfraclen
= upfrac_end
- upfrac_start
;
2730 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2732 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2734 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2736 up
= make_emacs_time (upsec
, upfrac
);
2745 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2746 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2749 procfs_ttyname (int rdev
)
2752 char name
[PATH_MAX
];
2755 fdev
= fopen ("/proc/tty/drivers", "r");
2760 unsigned long minor_beg
, minor_end
;
2761 char minor
[25]; /* 2 32-bit numbers + dash */
2764 while (!feof (fdev
) && !ferror (fdev
))
2766 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2767 && major
== MAJOR (rdev
))
2769 minor_beg
= strtoul (minor
, &endp
, 0);
2771 minor_end
= minor_beg
;
2772 else if (*endp
== '-')
2773 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2777 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2779 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2787 return build_string (name
);
2790 static unsigned long
2791 procfs_get_total_memory (void)
2794 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2797 fmem
= fopen ("/proc/meminfo", "r");
2801 unsigned long entry_value
;
2802 char entry_name
[20]; /* the longest I saw is 13+1 */
2804 while (!feof (fmem
) && !ferror (fmem
))
2806 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2807 && strcmp (entry_name
, "MemTotal:") == 0)
2809 retval
= entry_value
;
2820 system_process_attributes (Lisp_Object pid
)
2822 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2826 long clocks_per_sec
;
2828 char procbuf
[1025], *p
, *q
;
2831 static char const default_cmd
[] = "???";
2832 const char *cmd
= default_cmd
;
2833 int cmdsize
= sizeof default_cmd
- 1;
2834 char *cmdline
= NULL
;
2835 ptrdiff_t cmdline_size
;
2838 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2841 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2842 long priority
, niceness
, rss
;
2843 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2844 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2846 Lisp_Object attrs
= Qnil
;
2847 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2848 struct gcpro gcpro1
, gcpro2
;
2850 CHECK_NUMBER_OR_FLOAT (pid
);
2851 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2852 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2853 if (stat (procfn
, &st
) < 0)
2856 GCPRO2 (attrs
, decoded_cmd
);
2860 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2862 pw
= getpwuid (uid
);
2865 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2868 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2870 gr
= getgrgid (gid
);
2873 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2875 strcpy (fn
, procfn
);
2876 procfn_end
= fn
+ strlen (fn
);
2877 strcpy (procfn_end
, "/stat");
2878 fd
= emacs_open (fn
, O_RDONLY
, 0);
2879 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2881 procbuf
[nread
] = '\0';
2884 p
= strchr (p
, '(');
2887 q
= strrchr (p
+ 1, ')');
2897 /* Command name is encoded in locale-coding-system; decode it. */
2898 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2899 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2900 Vlocale_coding_system
, 0);
2901 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2905 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2907 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2908 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2909 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2910 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2911 &u_time
, &s_time
, &cutime
, &cstime
,
2912 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2917 state_str
[1] = '\0';
2918 tem
= build_string (state_str
);
2919 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2921 /* Stops GCC whining about limited range of data type. */
2926 thcount_eint
= thcount
;
2927 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2928 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2929 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2930 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2931 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2932 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2933 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2934 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2935 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2936 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2937 if (clocks_per_sec
< 0)
2938 clocks_per_sec
= 100;
2939 attrs
= Fcons (Fcons (Qutime
,
2940 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2942 attrs
= Fcons (Fcons (Qstime
,
2943 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2945 attrs
= Fcons (Fcons (Qtime
,
2946 ltime_from_jiffies (s_time
+ u_time
,
2949 attrs
= Fcons (Fcons (Qcutime
,
2950 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2952 attrs
= Fcons (Fcons (Qcstime
,
2953 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2955 attrs
= Fcons (Fcons (Qctime
,
2956 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2958 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2959 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2960 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2961 tnow
= current_emacs_time ();
2962 telapsed
= get_up_time ();
2963 tboot
= sub_emacs_time (tnow
, telapsed
);
2964 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2965 tstart
= add_emacs_time (tboot
, tstart
);
2966 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2967 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2968 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2969 telapsed
= sub_emacs_time (tnow
, tstart
);
2970 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2971 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2972 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2973 / EMACS_TIME_TO_DOUBLE (telapsed
));
2976 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2977 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2980 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2987 strcpy (procfn_end
, "/cmdline");
2988 fd
= emacs_open (fn
, O_RDONLY
, 0);
2992 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2994 if (emacs_read (fd
, &ch
, 1) != 1)
2997 if (c_isspace (c
) || c
== '\\')
2998 cmdline_size
++; /* for later quoting, see below */
3002 cmdline
= xmalloc (cmdline_size
+ 1);
3003 lseek (fd
, 0L, SEEK_SET
);
3005 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
3006 cmdline
[nread
++] = '\0';
3009 /* Assigning zero to `nread' makes us skip the following
3010 two loops, assign zero to cmdline_size, and enter the
3011 following `if' clause that handles unknown command
3015 /* We don't want trailing null characters. */
3016 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
3018 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
3020 /* Escape-quote whitespace and backslashes. */
3021 if (c_isspace (*p
) || *p
== '\\')
3023 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
3027 else if (*p
== '\0')
3030 cmdline_size
= nread
;
3034 cmdline_size
= cmdsize
+ 2;
3035 cmdline
= xmalloc (cmdline_size
+ 1);
3036 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
3039 /* Command line is encoded in locale-coding-system; decode it. */
3040 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
3041 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3042 Vlocale_coding_system
, 0);
3044 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3051 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3053 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3054 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3055 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3056 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3057 #undef _FILE_OFFSET_BITS
3059 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3064 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3065 #define _FILE_OFFSET_BITS 64
3066 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
3068 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3071 system_process_attributes (Lisp_Object pid
)
3073 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3078 struct psinfo pinfo
;
3084 Lisp_Object attrs
= Qnil
;
3085 Lisp_Object decoded_cmd
, tem
;
3086 struct gcpro gcpro1
, gcpro2
;
3088 CHECK_NUMBER_OR_FLOAT (pid
);
3089 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3090 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3091 if (stat (procfn
, &st
) < 0)
3094 GCPRO2 (attrs
, decoded_cmd
);
3098 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3100 pw
= getpwuid (uid
);
3103 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3106 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3108 gr
= getgrgid (gid
);
3111 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3113 strcpy (fn
, procfn
);
3114 procfn_end
= fn
+ strlen (fn
);
3115 strcpy (procfn_end
, "/psinfo");
3116 fd
= emacs_open (fn
, O_RDONLY
, 0);
3118 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3120 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3121 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3122 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3126 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3127 state_str
[1] = '\0';
3128 tem
= build_string (state_str
);
3129 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3132 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3133 need to get a string from it. */
3135 /* FIXME: missing: Qtpgid */
3147 Are they available? */
3149 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3150 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3151 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3152 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3153 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3155 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3156 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3157 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3159 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3160 range 0 .. 2**15, representing 0.0 .. 1.0. */
3161 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
3162 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
3165 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3166 strlen (pinfo
.pr_fname
)),
3167 Vlocale_coding_system
, 0);
3168 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3170 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3171 strlen (pinfo
.pr_psargs
)),
3172 Vlocale_coding_system
, 0);
3173 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3183 #elif defined __FreeBSD__
3186 timeval_to_EMACS_TIME (struct timeval t
)
3188 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3192 make_lisp_timeval (struct timeval t
)
3194 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3198 system_process_attributes (Lisp_Object pid
)
3201 int pagesize
= getpagesize ();
3208 char args
[MAXPATHLEN
];
3211 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3212 struct kinfo_proc proc
;
3213 size_t proclen
= sizeof proc
;
3215 struct gcpro gcpro1
, gcpro2
;
3216 Lisp_Object attrs
= Qnil
;
3217 Lisp_Object decoded_comm
;
3219 CHECK_NUMBER_OR_FLOAT (pid
);
3220 CONS_TO_INTEGER (pid
, int, proc_id
);
3223 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3226 GCPRO2 (attrs
, decoded_comm
);
3228 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3231 pw
= getpwuid (proc
.ki_uid
);
3234 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3236 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3239 gr
= getgrgid (proc
.ki_svgid
);
3242 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3244 decoded_comm
= code_convert_string_norecord
3245 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3246 Vlocale_coding_system
, 0);
3248 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3250 char state
[2] = {'\0', '\0'};
3251 switch (proc
.ki_stat
)
3273 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3276 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3277 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3278 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3281 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3284 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3286 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3287 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3288 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3289 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3290 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3292 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3294 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3296 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3297 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3298 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3300 attrs
= Fcons (Fcons (Qcutime
,
3301 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3303 attrs
= Fcons (Fcons (Qcstime
,
3304 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3306 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3307 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3308 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3310 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3312 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3313 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3314 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3315 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3316 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3319 now
= current_emacs_time ();
3320 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3321 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3323 len
= sizeof fscale
;
3324 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3329 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3331 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3332 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3333 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3337 len
= sizeof npages
;
3338 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3340 double pmem
= (proc
.ki_flag
& P_INMEM
3341 ? 100.0 * proc
.ki_rssize
/ npages
3343 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3346 mib
[2] = KERN_PROC_ARGS
;
3348 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3351 for (i
= 0; i
< len
; i
++)
3353 if (! args
[i
] && i
< len
- 1)
3358 (code_convert_string_norecord
3359 (build_unibyte_string (args
),
3360 Vlocale_coding_system
, 0));
3362 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3369 /* The WINDOWSNT implementation is in w32.c.
3370 The MSDOS implementation is in dosfns.c. */
3371 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3374 system_process_attributes (Lisp_Object pid
)
3379 #endif /* !defined (WINDOWSNT) */