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
= EMACS_GETPGRP (0);
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
= EMACS_GETPGRP (0);
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 #ifdef F_GETOWN /* F_SETFL does not imply existence of F_GETOWN */
1041 if (interrupt_input
)
1043 old_fcntl_owner
[fileno (tty_out
->input
)] =
1044 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1045 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1046 init_sigio (fileno (tty_out
->input
));
1048 if (gpm_tty
== tty_out
)
1050 /* Arrange for mouse events to give us SIGIO signals. */
1051 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1052 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1053 init_sigio (gpm_fd
);
1055 #endif /* HAVE_GPM */
1057 #endif /* F_GETOWN */
1058 #endif /* F_SETFL */
1061 /* This symbol is defined on recent USG systems.
1062 Someone says without this call USG won't really buffer the file
1063 even with a call to setbuf. */
1064 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1066 setbuf (tty_out
->output
, (char *) _sobuf
);
1069 if (tty_out
->terminal
->set_terminal_modes_hook
)
1070 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1072 if (!tty_out
->term_initted
)
1074 Lisp_Object tail
, frame
;
1075 FOR_EACH_FRAME (tail
, frame
)
1077 /* XXX This needs to be revised. */
1078 if (FRAME_TERMCAP_P (XFRAME (frame
))
1079 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1080 init_frame_faces (XFRAME (frame
));
1084 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1086 /* We used to call "direct_output_forward_char(0)" here,
1087 but it's not clear why, since it may not do anything anyway. */
1091 Lisp_Object tail
, frame
;
1093 FOR_EACH_FRAME (tail
, frame
)
1095 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1096 || FRAME_MSDOS_P (XFRAME (frame
)))
1097 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1098 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1102 tty_out
->term_initted
= 1;
1105 /* Return nonzero if safe to use tabs in output.
1106 At the time this is called, init_sys_modes has not been done yet. */
1109 tabs_safe_p (int fd
)
1111 struct emacs_tty etty
;
1113 emacs_get_tty (fd
, &etty
);
1116 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1117 #else /* not TABDLY */
1119 #endif /* not TABDLY */
1125 /* Get terminal size from system.
1126 Store number of lines into *HEIGHTP and width into *WIDTHP.
1127 We store 0 if there's no valid information. */
1130 get_tty_size (int fd
, int *widthp
, int *heightp
)
1132 #if defined TIOCGWINSZ
1135 struct winsize size
;
1137 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1138 *widthp
= *heightp
= 0;
1141 *widthp
= size
.ws_col
;
1142 *heightp
= size
.ws_row
;
1145 #elif defined TIOCGSIZE
1147 /* SunOS - style. */
1148 struct ttysize size
;
1150 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1151 *widthp
= *heightp
= 0;
1154 *widthp
= size
.ts_cols
;
1155 *heightp
= size
.ts_lines
;
1158 #elif defined WINDOWSNT
1160 CONSOLE_SCREEN_BUFFER_INFO info
;
1161 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1163 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1164 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1167 *widthp
= *heightp
= 0;
1171 *widthp
= ScreenCols ();
1172 *heightp
= ScreenRows ();
1174 #else /* system doesn't know size */
1182 /* Set the logical window size associated with descriptor FD
1183 to HEIGHT and WIDTH. This is used mainly with ptys. */
1186 set_window_size (int fd
, int height
, int width
)
1191 struct winsize size
;
1192 size
.ws_row
= height
;
1193 size
.ws_col
= width
;
1195 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1196 return 0; /* error */
1203 /* SunOS - style. */
1204 struct ttysize size
;
1205 size
.ts_lines
= height
;
1206 size
.ts_cols
= width
;
1208 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1214 #endif /* not SunOS-style */
1215 #endif /* not BSD-style */
1220 /* Prepare all terminal devices for exiting Emacs. */
1223 reset_all_sys_modes (void)
1225 struct tty_display_info
*tty
;
1226 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1227 reset_sys_modes (tty
);
1230 /* Prepare the terminal for closing it; move the cursor to the
1231 bottom of the frame, turn off interrupt-driven I/O, etc. */
1234 reset_sys_modes (struct tty_display_info
*tty_out
)
1241 if (!tty_out
->term_initted
)
1244 if (!tty_out
->output
)
1245 return; /* The tty is suspended. */
1247 /* Go to and clear the last line of the terminal. */
1249 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1251 /* Code adapted from tty_clear_end_of_line. */
1252 if (tty_out
->TS_clr_line
)
1254 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1257 { /* have to do it the hard way */
1259 tty_turn_off_insert (tty_out
);
1261 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1263 fputc (' ', tty_out
->output
);
1267 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1268 fflush (tty_out
->output
);
1270 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1271 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1274 /* Avoid possible loss of output when changing terminal modes. */
1275 fsync (fileno (tty_out
->output
));
1279 #ifdef F_SETOWN /* F_SETFL does not imply existence of F_SETOWN */
1280 if (interrupt_input
)
1282 reset_sigio (fileno (tty_out
->input
));
1283 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1284 old_fcntl_owner
[fileno (tty_out
->input
)]);
1286 #endif /* F_SETOWN */
1288 fcntl (fileno (tty_out
->input
), F_SETFL
,
1289 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NDELAY
);
1291 #endif /* F_SETFL */
1293 if (tty_out
->old_tty
)
1294 while (emacs_set_tty (fileno (tty_out
->input
),
1295 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1298 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1302 widen_foreground_group (fileno (tty_out
->input
));
1307 /* Set up the proper status flags for use of a pty. */
1312 /* I'm told that TOICREMOTE does not mean control chars
1313 "can't be sent" but rather that they don't have
1314 input-editing or signaling effects.
1315 That should be good, because we have other ways
1316 to do those things in Emacs.
1317 However, telnet mode seems not to work on 4.2.
1318 So TIOCREMOTE is turned off now. */
1320 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1321 will hang. In particular, the "timeout" feature (which
1322 causes a read to return if there is no data available)
1323 does this. Also it is known that telnet mode will hang
1324 in such a way that Emacs must be stopped (perhaps this
1325 is the same problem).
1327 If TIOCREMOTE is turned off, then there is a bug in
1328 hp-ux which sometimes loses data. Apparently the
1329 code which blocks the master process when the internal
1330 buffer fills up does not work. Other than this,
1331 though, everything else seems to work fine.
1333 Since the latter lossage is more benign, we may as well
1334 lose that way. -- cph */
1336 #if defined (UNIX98_PTYS)
1339 ioctl (fd
, FIONBIO
, &on
);
1344 #endif /* HAVE_PTYS */
1347 #include <sys/socket.h>
1349 #endif /* HAVE_SOCKETS */
1352 #ifndef HAVE_H_ERRNO
1355 #endif /* TRY_AGAIN */
1358 init_system_name (void)
1360 #ifndef HAVE_GETHOSTNAME
1363 Vsystem_name
= build_string (uts
.nodename
);
1364 #else /* HAVE_GETHOSTNAME */
1365 unsigned int hostname_size
= 256;
1366 char *hostname
= alloca (hostname_size
);
1368 /* Try to get the host name; if the buffer is too short, try
1369 again. Apparently, the only indication gethostname gives of
1370 whether the buffer was large enough is the presence or absence
1371 of a '\0' in the string. Eech. */
1374 gethostname (hostname
, hostname_size
- 1);
1375 hostname
[hostname_size
- 1] = '\0';
1377 /* Was the buffer large enough for the '\0'? */
1378 if (strlen (hostname
) < hostname_size
- 1)
1381 hostname_size
<<= 1;
1382 hostname
= alloca (hostname_size
);
1385 /* Turn the hostname into the official, fully-qualified hostname.
1386 Don't do this if we're going to dump; this can confuse system
1387 libraries on some machines and make the dumped emacs core dump. */
1390 #endif /* not CANNOT_DUMP */
1391 if (! strchr (hostname
, '.'))
1394 #ifdef HAVE_GETADDRINFO
1395 struct addrinfo
*res
;
1396 struct addrinfo hints
;
1399 memset (&hints
, 0, sizeof (hints
));
1400 hints
.ai_socktype
= SOCK_STREAM
;
1401 hints
.ai_flags
= AI_CANONNAME
;
1403 for (count
= 0;; count
++)
1405 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1406 || ret
!= EAI_AGAIN
)
1411 Fsleep_for (make_number (1), Qnil
);
1416 struct addrinfo
*it
= res
;
1419 char *fqdn
= it
->ai_canonname
;
1420 if (fqdn
&& strchr (fqdn
, '.')
1421 && strcmp (fqdn
, "localhost.localdomain") != 0)
1427 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1428 strcpy (hostname
, it
->ai_canonname
);
1432 #else /* !HAVE_GETADDRINFO */
1434 for (count
= 0;; count
++)
1440 hp
= gethostbyname (hostname
);
1442 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1449 Fsleep_for (make_number (1), Qnil
);
1454 char *fqdn
= (char *) hp
->h_name
;
1456 if (!strchr (fqdn
, '.'))
1458 /* We still don't have a fully qualified domain name.
1459 Try to find one in the list of alternate names */
1460 char **alias
= hp
->h_aliases
;
1462 && (!strchr (*alias
, '.')
1463 || !strcmp (*alias
, "localhost.localdomain")))
1470 #endif /* !HAVE_GETADDRINFO */
1472 #endif /* HAVE_SOCKETS */
1473 Vsystem_name
= build_string (hostname
);
1474 #endif /* HAVE_GETHOSTNAME */
1477 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1478 if (*p
== ' ' || *p
== '\t')
1483 sigset_t empty_mask
;
1485 static struct sigaction process_fatal_action
;
1488 emacs_sigaction_flags (void)
1491 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1492 'select') to reset their timeout on some platforms (e.g.,
1493 HP-UX 11), which is not what we want. Also, when Emacs is
1494 interactive, we don't want SA_RESTART because we need to poll
1495 for pending input so we need long-running syscalls to be interrupted
1496 after a signal that sets pending_signals.
1498 Non-interactive keyboard input goes through stdio, where we
1499 always want restartable system calls. */
1506 /* Store into *ACTION a signal action suitable for Emacs, with handler
1509 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1511 sigemptyset (&action
->sa_mask
);
1513 /* When handling a signal, block nonfatal system signals that are caught
1514 by Emacs. This makes race conditions less likely. */
1515 sigaddset (&action
->sa_mask
, SIGALRM
);
1517 sigaddset (&action
->sa_mask
, SIGCHLD
);
1520 sigaddset (&action
->sa_mask
, SIGDANGER
);
1522 #ifdef PROFILER_CPU_SUPPORT
1523 sigaddset (&action
->sa_mask
, SIGPROF
);
1526 sigaddset (&action
->sa_mask
, SIGWINCH
);
1528 if (! noninteractive
)
1530 sigaddset (&action
->sa_mask
, SIGINT
);
1531 sigaddset (&action
->sa_mask
, SIGQUIT
);
1533 sigaddset (&action
->sa_mask
, SIGIO
);
1537 if (! IEEE_FLOATING_POINT
)
1538 sigaddset (&action
->sa_mask
, SIGFPE
);
1540 action
->sa_handler
= handler
;
1541 action
->sa_flags
= emacs_sigaction_flags ();
1544 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1545 static pthread_t main_thread
;
1548 /* SIG has arrived at the current process. Deliver it to the main
1549 thread, which should handle it with HANDLER.
1551 If we are on the main thread, handle the signal SIG with HANDLER.
1552 Otherwise, redirect the signal to the main thread, blocking it from
1553 this thread. POSIX says any thread can receive a signal that is
1554 associated with a process, process group, or asynchronous event.
1555 On GNU/Linux that is not true, but for other systems (FreeBSD at
1558 deliver_process_signal (int sig
, signal_handler_t handler
)
1560 /* Preserve errno, to avoid race conditions with signal handlers that
1561 might change errno. Races can occur even in single-threaded hosts. */
1562 int old_errno
= errno
;
1564 bool on_main_thread
= true;
1565 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1566 if (! pthread_equal (pthread_self (), main_thread
))
1569 sigemptyset (&blocked
);
1570 sigaddset (&blocked
, sig
);
1571 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1572 pthread_kill (main_thread
, sig
);
1573 on_main_thread
= false;
1582 /* Static location to save a fatal backtrace in a thread.
1583 FIXME: If two subsidiary threads fail simultaneously, the resulting
1584 backtrace may be garbage. */
1585 enum { BACKTRACE_LIMIT_MAX
= 500 };
1586 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1587 static int thread_backtrace_npointers
;
1589 /* SIG has arrived at the current thread.
1590 If we are on the main thread, handle the signal SIG with HANDLER.
1591 Otherwise, this is a fatal error in the handling thread. */
1593 deliver_thread_signal (int sig
, signal_handler_t handler
)
1595 int old_errno
= errno
;
1597 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1598 if (! pthread_equal (pthread_self (), main_thread
))
1600 thread_backtrace_npointers
1601 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1602 sigaction (sig
, &process_fatal_action
, 0);
1603 pthread_kill (main_thread
, sig
);
1605 /* Avoid further damage while the main thread is exiting. */
1607 sigsuspend (&empty_mask
);
1615 #if !HAVE_DECL_SYS_SIGLIST
1617 # ifdef _sys_siglist
1618 # define sys_siglist _sys_siglist
1620 # define sys_siglist my_sys_siglist
1621 static char const *sys_siglist
[NSIG
];
1626 # define sys_siglist_entries _sys_nsig
1628 # define sys_siglist_entries NSIG
1631 /* Handle bus errors, invalid instruction, etc. */
1633 handle_fatal_signal (int sig
)
1635 terminate_due_to_signal (sig
, 40);
1639 deliver_fatal_signal (int sig
)
1641 deliver_process_signal (sig
, handle_fatal_signal
);
1645 deliver_fatal_thread_signal (int sig
)
1647 deliver_thread_signal (sig
, handle_fatal_signal
);
1650 static _Noreturn
void
1651 handle_arith_signal (int sig
)
1653 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1654 xsignal0 (Qarith_error
);
1658 deliver_arith_signal (int sig
)
1660 deliver_thread_signal (sig
, handle_arith_signal
);
1663 /* Treat SIG as a terminating signal, unless it is already ignored and
1664 we are in --batch mode. Among other things, this makes nohup work. */
1666 maybe_fatal_sig (int sig
)
1668 bool catch_sig
= !noninteractive
;
1671 struct sigaction old_action
;
1672 sigaction (sig
, 0, &old_action
);
1673 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1676 sigaction (sig
, &process_fatal_action
, 0);
1680 init_signals (bool dumping
)
1682 struct sigaction thread_fatal_action
;
1683 struct sigaction action
;
1685 sigemptyset (&empty_mask
);
1687 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1688 main_thread
= pthread_self ();
1691 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1694 sys_siglist
[SIGABRT
] = "Aborted";
1696 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1699 sys_siglist
[SIGALRM
] = "Alarm clock";
1702 sys_siglist
[SIGBUS
] = "Bus error";
1705 sys_siglist
[SIGCLD
] = "Child status changed";
1708 sys_siglist
[SIGCHLD
] = "Child status changed";
1711 sys_siglist
[SIGCONT
] = "Continued";
1714 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1717 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1720 sys_siglist
[SIGEMT
] = "Emulation trap";
1722 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1724 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1727 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1730 sys_siglist
[SIGHUP
] = "Hangup";
1732 sys_siglist
[SIGILL
] = "Illegal instruction";
1733 sys_siglist
[SIGINT
] = "Interrupt";
1735 sys_siglist
[SIGIO
] = "I/O possible";
1738 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1741 sys_siglist
[SIGIOT
] = "IOT trap";
1744 sys_siglist
[SIGKILL
] = "Killed";
1747 sys_siglist
[SIGLOST
] = "Resource lost";
1750 sys_siglist
[SIGLWP
] = "SIGLWP";
1753 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1756 sys_siglist
[SIGWIND
] = "SIGPHONE";
1759 sys_siglist
[SIGPIPE
] = "Broken pipe";
1762 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1765 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1768 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1771 sys_siglist
[SIGPWR
] = "Power-fail restart";
1774 sys_siglist
[SIGQUIT
] = "Quit";
1777 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1780 sys_siglist
[SIGSAK
] = "Secure attention";
1782 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1784 sys_siglist
[SIGSOUND
] = "Sound completed";
1787 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1790 sys_siglist
[SIGSTP
] = "Stopped (user)";
1793 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1795 sys_siglist
[SIGTERM
] = "Terminated";
1797 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1800 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1803 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1806 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1809 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1812 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1815 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1818 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1821 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1824 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1827 sys_siglist
[SIGWINCH
] = "Window size changed";
1830 sys_siglist
[SIGWIND
] = "SIGWIND";
1833 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1836 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1839 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1841 /* Don't alter signal handlers if dumping. On some machines,
1842 changing signal handlers sets static data that would make signals
1843 fail to work right when the dumped Emacs is run. */
1847 sigfillset (&process_fatal_action
.sa_mask
);
1848 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1849 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1851 sigfillset (&thread_fatal_action
.sa_mask
);
1852 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1853 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1855 /* SIGINT may need special treatment on MS-Windows. See
1856 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1857 Please update the doc of kill-emacs, kill-emacs-hook, and
1858 NEWS if you change this. */
1860 maybe_fatal_sig (SIGHUP
);
1861 maybe_fatal_sig (SIGINT
);
1862 maybe_fatal_sig (SIGTERM
);
1864 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1865 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1866 to behave more like typical batch applications do. */
1867 if (! noninteractive
)
1868 signal (SIGPIPE
, SIG_IGN
);
1870 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1871 sigaction (SIGILL
, &thread_fatal_action
, 0);
1872 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1874 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1875 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1876 interpreter's floating point operations, so treat SIGFPE as an
1877 arith-error if it arises in the main thread. */
1878 if (IEEE_FLOATING_POINT
)
1879 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1882 emacs_sigaction_init (&action
, deliver_arith_signal
);
1883 sigaction (SIGFPE
, &action
, 0);
1887 add_user_signal (SIGUSR1
, "sigusr1");
1890 add_user_signal (SIGUSR2
, "sigusr2");
1892 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1894 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1897 sigaction (SIGORE
, &thread_fatal_action
, 0);
1900 sigaction (SIGUME
, &thread_fatal_action
, 0);
1903 sigaction (SIGDLK
, &process_fatal_action
, 0);
1906 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1909 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1912 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1915 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1917 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1919 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1921 sigaction (SIGTERM
, &process_fatal_action
, 0);
1923 signal (SIGPROF
, SIG_IGN
);
1926 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1929 sigaction (SIGXCPU
, &process_fatal_action
, 0);
1932 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1936 /* This just means available memory is getting low. */
1937 emacs_sigaction_init (&action
, deliver_danger_signal
);
1938 sigaction (SIGDANGER
, &action
, 0);
1941 /* AIX-specific signals. */
1943 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1946 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1949 sigaction (SIGMSG
, &process_fatal_action
, 0);
1952 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1955 sigaction (SIGSAK
, &process_fatal_action
, 0);
1958 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1961 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1971 /* Figure out how many bits the system's random number generator uses.
1972 `random' and `lrand48' are assumed to return 31 usable bits.
1973 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1974 so we'll shift it and treat it like the 15-bit USG `rand'. */
1978 # define RAND_BITS 31
1979 # else /* !HAVE_RANDOM */
1980 # ifdef HAVE_LRAND48
1981 # define RAND_BITS 31
1982 # define random lrand48
1983 # else /* !HAVE_LRAND48 */
1984 # define RAND_BITS 15
1985 # if RAND_MAX == 32767
1986 # define random rand
1987 # else /* RAND_MAX != 32767 */
1988 # if RAND_MAX == 2147483647
1989 # define random() (rand () >> 16)
1990 # else /* RAND_MAX != 2147483647 */
1992 # define random rand
1994 # define random() (rand () >> 16)
1996 # endif /* RAND_MAX != 2147483647 */
1997 # endif /* RAND_MAX != 32767 */
1998 # endif /* !HAVE_LRAND48 */
1999 # endif /* !HAVE_RANDOM */
2000 #endif /* !RAND_BITS */
2003 seed_random (void *seed
, ptrdiff_t seed_size
)
2005 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2006 unsigned int arg
= 0;
2010 unsigned char *argp
= (unsigned char *) &arg
;
2011 unsigned char *seedp
= seed
;
2013 for (i
= 0; i
< seed_size
; i
++)
2014 argp
[i
% sizeof arg
] ^= seedp
[i
];
2018 # ifdef HAVE_LRAND48
2029 EMACS_TIME t
= current_emacs_time ();
2030 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
2031 seed_random (&v
, sizeof v
);
2035 * Return a nonnegative random integer out of whatever we've got.
2036 * It contains enough bits to make a random (signed) Emacs fixnum.
2037 * This suffices even for a 64-bit architecture with a 15-bit rand.
2044 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2045 val
= (random () ^ (val
<< RAND_BITS
)
2046 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2047 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2048 return val
& INTMASK
;
2051 #ifndef HAVE_SNPRINTF
2052 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2054 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2056 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2057 ptrdiff_t nbytes
= size
- 1;
2062 va_start (ap
, format
);
2063 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2067 if (nbytes
== size
- 1)
2069 /* Calculate the length of the string that would have been created
2070 had the buffer been large enough. */
2071 char stackbuf
[4000];
2073 ptrdiff_t bsize
= sizeof stackbuf
;
2074 va_start (ap
, format
);
2075 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2081 if (INT_MAX
< nbytes
)
2094 /* If a backtrace is available, output the top lines of it to stderr.
2095 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2096 This function may be called from a signal handler, so it should
2097 not invoke async-unsafe functions like malloc. */
2099 emacs_backtrace (int backtrace_limit
)
2101 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2102 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2106 if (thread_backtrace_npointers
)
2108 buffer
= thread_backtrace_buffer
;
2109 npointers
= thread_backtrace_npointers
;
2113 buffer
= main_backtrace_buffer
;
2114 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2119 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
2120 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2121 if (bounded_limit
< npointers
)
2122 ignore_value (write (STDERR_FILENO
, "...\n", 4));
2130 terminate_due_to_signal (SIGABRT
, 10);
2135 emacs_open (const char *path
, int oflag
, int mode
)
2137 register int rtnval
;
2139 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2140 && (errno
== EINTR
))
2146 emacs_close (int fd
)
2149 register int rtnval
;
2151 while ((rtnval
= close (fd
)) == -1
2152 && (errno
== EINTR
))
2155 /* If close is interrupted SunOS 4.1 may or may not have closed the
2156 file descriptor. If it did the second close will fail with
2157 errno = EBADF. That means we have succeeded. */
2158 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2164 /* Maximum number of bytes to read or write in a single system call.
2165 This works around a serious bug in Linux kernels before 2.6.16; see
2166 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2167 It's likely to work around similar bugs in other operating systems, so do it
2168 on all platforms. Round INT_MAX down to a page size, with the conservative
2169 assumption that page sizes are at most 2**18 bytes (any kernel with a
2170 page size larger than that shouldn't have the bug). */
2171 #ifndef MAX_RW_COUNT
2172 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2175 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2176 Return the number of bytes read, which might be less than NBYTE.
2177 On error, set errno and return -1. */
2179 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
2181 register ssize_t rtnval
;
2183 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2184 passes a size that large to emacs_read. */
2186 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2187 && (errno
== EINTR
))
2192 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2193 or if a partial write occurs. Return the number of bytes written, setting
2194 errno if this is less than NBYTE. */
2196 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
2199 ptrdiff_t bytes_written
;
2205 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2211 /* I originally used `QUIT' but that might causes files to
2212 be truncated if you hit C-g in the middle of it. --Stef */
2213 if (pending_signals
)
2214 process_pending_signals ();
2223 bytes_written
+= rtnval
;
2226 return (bytes_written
);
2229 static struct allocator
const emacs_norealloc_allocator
=
2230 { xmalloc
, NULL
, xfree
, memory_full
};
2232 /* Get the symbolic link value of FILENAME. Return a pointer to a
2233 NUL-terminated string. If readlink fails, return NULL and set
2234 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
2235 Otherwise, allocate memory and return a pointer to that memory. If
2236 memory allocation fails, diagnose and fail without returning. If
2237 successful, store the length of the symbolic link into *LINKLEN. */
2239 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
2241 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
2242 &emacs_norealloc_allocator
, careadlinkatcwd
);
2247 * All of the following are for USG.
2249 * On USG systems the system calls are INTERRUPTIBLE by signals
2250 * that the user program has elected to catch. Thus the system call
2251 * must be retried in these cases. To handle this without massive
2252 * changes in the source code, we remap the standard system call names
2253 * to names for our own functions in sysdep.c that do the system call
2254 * with retries. Actually, for portability reasons, it is good
2255 * programming practice, as this example shows, to limit all actual
2256 * system calls to a single occurrence in the source. Sure, this
2257 * adds an extra level of function call overhead but it is almost
2258 * always negligible. Fred Fish, Unisoft Systems Inc.
2262 * Warning, this function may not duplicate 4.2 action properly
2263 * under error conditions.
2266 #if !defined (HAVE_GETWD) || defined (BROKEN_GETWD)
2269 /* In 4.1, param.h fails to define this. */
2270 #define MAXPATHLEN 1024
2274 getwd (char *pathname
)
2276 char *npath
, *spath
;
2277 extern char *getcwd (char *, size_t);
2279 block_input (); /* getcwd uses malloc */
2280 spath
= npath
= getcwd ((char *) 0, MAXPATHLEN
);
2286 /* On Altos 3068, getcwd can return @hostname/dir, so discard
2287 up to first slash. Should be harmless on other systems. */
2288 while (*npath
&& *npath
!= '/')
2290 strcpy (pathname
, npath
);
2291 free (spath
); /* getcwd uses malloc */
2296 #endif /* !defined (HAVE_GETWD) || defined (BROKEN_GETWD) */
2299 /* Directory routines for systems that don't have them. */
2301 #ifdef HAVE_DIRENT_H
2305 #if !defined (HAVE_CLOSEDIR)
2308 closedir (DIR *dirp
/* stream from opendir */)
2312 rtnval
= emacs_close (dirp
->dd_fd
);
2317 #endif /* not HAVE_CLOSEDIR */
2318 #endif /* HAVE_DIRENT_H */
2321 /* Return a struct timeval that is roughly equivalent to T.
2322 Use the least timeval not less than T.
2323 Return an extremal value if the result would overflow. */
2325 make_timeval (EMACS_TIME t
)
2328 tv
.tv_sec
= t
.tv_sec
;
2329 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2331 if (t
.tv_nsec
% 1000 != 0)
2333 if (tv
.tv_usec
< 999999)
2335 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2345 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2346 ATIME and MTIME, respectively.
2347 FD must be either negative -- in which case it is ignored --
2348 or a file descriptor that is open on FILE.
2349 If FD is nonnegative, then FILE can be NULL. */
2351 set_file_times (int fd
, const char *filename
,
2352 EMACS_TIME atime
, EMACS_TIME mtime
)
2354 struct timespec timespec
[2];
2355 timespec
[0] = atime
;
2356 timespec
[1] = mtime
;
2357 return fdutimens (fd
, filename
, timespec
);
2360 /* Like strsignal, except async-signal-safe, and this function typically
2361 returns a string in the C locale rather than the current locale. */
2363 safe_strsignal (int code
)
2365 char const *signame
= 0;
2367 if (0 <= code
&& code
< sys_siglist_entries
)
2368 signame
= sys_siglist
[code
];
2370 signame
= "Unknown signal";
2376 /* For make-serial-process */
2378 serial_open (char *port
)
2382 fd
= emacs_open ((char*) port
,
2395 error ("Could not open %s: %s",
2396 port
, emacs_strerror (errno
));
2399 ioctl (fd
, TIOCEXCL
, (char *) 0);
2405 #if !defined (HAVE_CFMAKERAW)
2406 /* Workaround for targets which are missing cfmakeraw. */
2407 /* Pasted from man page. */
2409 cfmakeraw (struct termios
*termios_p
)
2411 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2412 termios_p
->c_oflag
&= ~OPOST
;
2413 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2414 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2415 termios_p
->c_cflag
|= CS8
;
2417 #endif /* !defined (HAVE_CFMAKERAW */
2419 #if !defined (HAVE_CFSETSPEED)
2420 /* Workaround for targets which are missing cfsetspeed. */
2422 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2424 return (cfsetispeed (termios_p
, vitesse
)
2425 + cfsetospeed (termios_p
, vitesse
));
2429 /* For serial-process-configure */
2431 serial_configure (struct Lisp_Process
*p
,
2432 Lisp_Object contact
)
2434 Lisp_Object childp2
= Qnil
;
2435 Lisp_Object tem
= Qnil
;
2436 struct termios attr
;
2438 char summary
[4] = "???"; /* This usually becomes "8N1". */
2440 childp2
= Fcopy_sequence (p
->childp
);
2442 /* Read port attributes and prepare default configuration. */
2443 err
= tcgetattr (p
->outfd
, &attr
);
2445 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2447 #if defined (CLOCAL)
2448 attr
.c_cflag
|= CLOCAL
;
2451 attr
.c_cflag
|= CREAD
;
2454 /* Configure speed. */
2455 if (!NILP (Fplist_member (contact
, QCspeed
)))
2456 tem
= Fplist_get (contact
, QCspeed
);
2458 tem
= Fplist_get (p
->childp
, QCspeed
);
2460 err
= cfsetspeed (&attr
, XINT (tem
));
2462 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2463 emacs_strerror (errno
));
2464 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2466 /* Configure bytesize. */
2467 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2468 tem
= Fplist_get (contact
, QCbytesize
);
2470 tem
= Fplist_get (p
->childp
, QCbytesize
);
2472 tem
= make_number (8);
2474 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2475 error (":bytesize must be nil (8), 7, or 8");
2476 summary
[0] = XINT (tem
) + '0';
2477 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2478 attr
.c_cflag
&= ~CSIZE
;
2479 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2481 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2482 if (XINT (tem
) != 8)
2483 error ("Bytesize cannot be changed");
2485 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2487 /* Configure parity. */
2488 if (!NILP (Fplist_member (contact
, QCparity
)))
2489 tem
= Fplist_get (contact
, QCparity
);
2491 tem
= Fplist_get (p
->childp
, QCparity
);
2492 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2493 error (":parity must be nil (no parity), `even', or `odd'");
2494 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2495 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2496 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2501 else if (EQ (tem
, Qeven
))
2504 attr
.c_cflag
|= PARENB
;
2505 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2507 else if (EQ (tem
, Qodd
))
2510 attr
.c_cflag
|= (PARENB
| PARODD
);
2511 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2514 /* Don't error on no parity, which should be set by cfmakeraw. */
2516 error ("Parity cannot be configured");
2518 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2520 /* Configure stopbits. */
2521 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2522 tem
= Fplist_get (contact
, QCstopbits
);
2524 tem
= Fplist_get (p
->childp
, QCstopbits
);
2526 tem
= make_number (1);
2528 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2529 error (":stopbits must be nil (1 stopbit), 1, or 2");
2530 summary
[2] = XINT (tem
) + '0';
2531 #if defined (CSTOPB)
2532 attr
.c_cflag
&= ~CSTOPB
;
2533 if (XINT (tem
) == 2)
2534 attr
.c_cflag
|= CSTOPB
;
2536 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2537 if (XINT (tem
) != 1)
2538 error ("Stopbits cannot be configured");
2540 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2542 /* Configure flowcontrol. */
2543 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2544 tem
= Fplist_get (contact
, QCflowcontrol
);
2546 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2547 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2548 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2549 #if defined (CRTSCTS)
2550 attr
.c_cflag
&= ~CRTSCTS
;
2552 #if defined (CNEW_RTSCTS)
2553 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2555 #if defined (IXON) && defined (IXOFF)
2556 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2560 /* Already configured. */
2562 else if (EQ (tem
, Qhw
))
2564 #if defined (CRTSCTS)
2565 attr
.c_cflag
|= CRTSCTS
;
2566 #elif defined (CNEW_RTSCTS)
2567 attr
.c_cflag
|= CNEW_RTSCTS
;
2569 error ("Hardware flowcontrol (RTS/CTS) not supported");
2572 else if (EQ (tem
, Qsw
))
2574 #if defined (IXON) && defined (IXOFF)
2575 attr
.c_iflag
|= (IXON
| IXOFF
);
2577 error ("Software flowcontrol (XON/XOFF) not supported");
2580 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2582 /* Activate configuration. */
2583 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2585 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2587 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2588 pset_childp (p
, childp2
);
2590 #endif /* not DOS_NT */
2592 /* System depended enumeration of and access to system processes a-la ps(1). */
2596 /* Process enumeration and access via /proc. */
2599 list_system_processes (void)
2601 Lisp_Object procdir
, match
, proclist
, next
;
2602 struct gcpro gcpro1
, gcpro2
;
2603 register Lisp_Object tail
;
2605 GCPRO2 (procdir
, match
);
2606 /* For every process on the system, there's a directory in the
2607 "/proc" pseudo-directory whose name is the numeric ID of that
2609 procdir
= build_string ("/proc");
2610 match
= build_string ("[0-9]+");
2611 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2613 /* `proclist' gives process IDs as strings. Destructively convert
2614 each string into a number. */
2615 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2618 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2622 /* directory_files_internal returns the files in reverse order; undo
2624 proclist
= Fnreverse (proclist
);
2628 #elif defined BSD_SYSTEM
2631 list_system_processes (void)
2633 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
2634 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2636 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2639 struct kinfo_proc
*procs
;
2642 struct gcpro gcpro1
;
2643 Lisp_Object proclist
= Qnil
;
2645 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2648 procs
= xmalloc (len
);
2649 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2656 len
/= sizeof (struct kinfo_proc
);
2657 for (i
= 0; i
< len
; i
++)
2659 #if defined DARWIN_OS || defined __NetBSD__
2660 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2661 #elif defined __OpenBSD__
2662 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2664 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2674 /* The WINDOWSNT implementation is in w32.c.
2675 The MSDOS implementation is in dosfns.c. */
2676 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2679 list_system_processes (void)
2684 #endif /* !defined (WINDOWSNT) */
2688 time_from_jiffies (unsigned long long tval
, long hz
)
2690 unsigned long long s
= tval
/ hz
;
2691 unsigned long long frac
= tval
% hz
;
2694 if (TYPE_MAXIMUM (time_t) < s
)
2696 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2697 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2698 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2701 /* This is reachable only in the unlikely case that HZ * HZ
2702 exceeds ULLONG_MAX. It calculates an approximation that is
2703 guaranteed to be in range. */
2704 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2705 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2706 ns
= frac
/ hz_per_ns
;
2709 return make_emacs_time (s
, ns
);
2713 ltime_from_jiffies (unsigned long long tval
, long hz
)
2715 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2716 return make_lisp_time (t
);
2723 EMACS_TIME up
= make_emacs_time (0, 0);
2726 fup
= fopen ("/proc/uptime", "r");
2730 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2731 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2733 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2734 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2735 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2738 if (TYPE_MAXIMUM (time_t) < upsec
)
2740 upsec
= TYPE_MAXIMUM (time_t);
2741 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2745 int upfraclen
= upfrac_end
- upfrac_start
;
2746 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2748 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2750 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2752 up
= make_emacs_time (upsec
, upfrac
);
2761 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2762 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2765 procfs_ttyname (int rdev
)
2768 char name
[PATH_MAX
];
2771 fdev
= fopen ("/proc/tty/drivers", "r");
2776 unsigned long minor_beg
, minor_end
;
2777 char minor
[25]; /* 2 32-bit numbers + dash */
2780 while (!feof (fdev
) && !ferror (fdev
))
2782 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2783 && major
== MAJOR (rdev
))
2785 minor_beg
= strtoul (minor
, &endp
, 0);
2787 minor_end
= minor_beg
;
2788 else if (*endp
== '-')
2789 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2793 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2795 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2803 return build_string (name
);
2806 static unsigned long
2807 procfs_get_total_memory (void)
2810 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2813 fmem
= fopen ("/proc/meminfo", "r");
2817 unsigned long entry_value
;
2818 char entry_name
[20]; /* the longest I saw is 13+1 */
2820 while (!feof (fmem
) && !ferror (fmem
))
2822 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2823 && strcmp (entry_name
, "MemTotal:") == 0)
2825 retval
= entry_value
;
2836 system_process_attributes (Lisp_Object pid
)
2838 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2842 long clocks_per_sec
;
2844 char procbuf
[1025], *p
, *q
;
2847 static char const default_cmd
[] = "???";
2848 const char *cmd
= default_cmd
;
2849 int cmdsize
= sizeof default_cmd
- 1;
2850 char *cmdline
= NULL
;
2851 ptrdiff_t cmdline_size
;
2854 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2857 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2858 long priority
, niceness
, rss
;
2859 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2860 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2862 Lisp_Object attrs
= Qnil
;
2863 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2864 struct gcpro gcpro1
, gcpro2
;
2866 CHECK_NUMBER_OR_FLOAT (pid
);
2867 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2868 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2869 if (stat (procfn
, &st
) < 0)
2872 GCPRO2 (attrs
, decoded_cmd
);
2876 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2878 pw
= getpwuid (uid
);
2881 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2884 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2886 gr
= getgrgid (gid
);
2889 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2891 strcpy (fn
, procfn
);
2892 procfn_end
= fn
+ strlen (fn
);
2893 strcpy (procfn_end
, "/stat");
2894 fd
= emacs_open (fn
, O_RDONLY
, 0);
2895 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2897 procbuf
[nread
] = '\0';
2900 p
= strchr (p
, '(');
2903 q
= strrchr (p
+ 1, ')');
2913 /* Command name is encoded in locale-coding-system; decode it. */
2914 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2915 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2916 Vlocale_coding_system
, 0);
2917 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2921 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2923 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2924 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2925 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2926 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2927 &u_time
, &s_time
, &cutime
, &cstime
,
2928 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2933 state_str
[1] = '\0';
2934 tem
= build_string (state_str
);
2935 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2937 /* Stops GCC whining about limited range of data type. */
2942 thcount_eint
= thcount
;
2943 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2944 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2945 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2946 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2947 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2948 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2949 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2950 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2951 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2952 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2953 if (clocks_per_sec
< 0)
2954 clocks_per_sec
= 100;
2955 attrs
= Fcons (Fcons (Qutime
,
2956 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2958 attrs
= Fcons (Fcons (Qstime
,
2959 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2961 attrs
= Fcons (Fcons (Qtime
,
2962 ltime_from_jiffies (s_time
+ u_time
,
2965 attrs
= Fcons (Fcons (Qcutime
,
2966 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2968 attrs
= Fcons (Fcons (Qcstime
,
2969 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2971 attrs
= Fcons (Fcons (Qctime
,
2972 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2974 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2975 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2976 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2977 tnow
= current_emacs_time ();
2978 telapsed
= get_up_time ();
2979 tboot
= sub_emacs_time (tnow
, telapsed
);
2980 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2981 tstart
= add_emacs_time (tboot
, tstart
);
2982 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2983 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2984 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2985 telapsed
= sub_emacs_time (tnow
, tstart
);
2986 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2987 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2988 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2989 / EMACS_TIME_TO_DOUBLE (telapsed
));
2992 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2993 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2996 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
3003 strcpy (procfn_end
, "/cmdline");
3004 fd
= emacs_open (fn
, O_RDONLY
, 0);
3008 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
3010 if (emacs_read (fd
, &ch
, 1) != 1)
3013 if (c_isspace (c
) || c
== '\\')
3014 cmdline_size
++; /* for later quoting, see below */
3018 cmdline
= xmalloc (cmdline_size
+ 1);
3019 lseek (fd
, 0L, SEEK_SET
);
3021 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
3022 cmdline
[nread
++] = '\0';
3025 /* Assigning zero to `nread' makes us skip the following
3026 two loops, assign zero to cmdline_size, and enter the
3027 following `if' clause that handles unknown command
3031 /* We don't want trailing null characters. */
3032 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
3034 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
3036 /* Escape-quote whitespace and backslashes. */
3037 if (c_isspace (*p
) || *p
== '\\')
3039 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
3043 else if (*p
== '\0')
3046 cmdline_size
= nread
;
3050 cmdline_size
= cmdsize
+ 2;
3051 cmdline
= xmalloc (cmdline_size
+ 1);
3052 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
3055 /* Command line is encoded in locale-coding-system; decode it. */
3056 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
3057 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3058 Vlocale_coding_system
, 0);
3060 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3067 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3069 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3070 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3071 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3072 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3073 #undef _FILE_OFFSET_BITS
3075 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3080 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3081 #define _FILE_OFFSET_BITS 64
3082 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
3084 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3087 system_process_attributes (Lisp_Object pid
)
3089 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3094 struct psinfo pinfo
;
3100 Lisp_Object attrs
= Qnil
;
3101 Lisp_Object decoded_cmd
, tem
;
3102 struct gcpro gcpro1
, gcpro2
;
3104 CHECK_NUMBER_OR_FLOAT (pid
);
3105 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3106 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3107 if (stat (procfn
, &st
) < 0)
3110 GCPRO2 (attrs
, decoded_cmd
);
3114 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3116 pw
= getpwuid (uid
);
3119 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3122 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3124 gr
= getgrgid (gid
);
3127 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3129 strcpy (fn
, procfn
);
3130 procfn_end
= fn
+ strlen (fn
);
3131 strcpy (procfn_end
, "/psinfo");
3132 fd
= emacs_open (fn
, O_RDONLY
, 0);
3134 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3136 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3137 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3138 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3142 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3143 state_str
[1] = '\0';
3144 tem
= build_string (state_str
);
3145 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3148 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3149 need to get a string from it. */
3151 /* FIXME: missing: Qtpgid */
3163 Are they available? */
3165 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3166 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3167 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3168 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3169 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3171 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3172 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3173 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3175 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3176 range 0 .. 2**15, representing 0.0 .. 1.0. */
3177 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
3178 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
3181 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3182 strlen (pinfo
.pr_fname
)),
3183 Vlocale_coding_system
, 0);
3184 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3186 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3187 strlen (pinfo
.pr_psargs
)),
3188 Vlocale_coding_system
, 0);
3189 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3199 #elif defined __FreeBSD__
3202 timeval_to_EMACS_TIME (struct timeval t
)
3204 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3208 make_lisp_timeval (struct timeval t
)
3210 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3214 system_process_attributes (Lisp_Object pid
)
3217 int pagesize
= getpagesize ();
3224 char args
[MAXPATHLEN
];
3227 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3228 struct kinfo_proc proc
;
3229 size_t proclen
= sizeof proc
;
3231 struct gcpro gcpro1
, gcpro2
;
3232 Lisp_Object attrs
= Qnil
;
3233 Lisp_Object decoded_comm
;
3235 CHECK_NUMBER_OR_FLOAT (pid
);
3236 CONS_TO_INTEGER (pid
, int, proc_id
);
3239 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3242 GCPRO2 (attrs
, decoded_comm
);
3244 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3247 pw
= getpwuid (proc
.ki_uid
);
3250 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3252 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3255 gr
= getgrgid (proc
.ki_svgid
);
3258 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3260 decoded_comm
= code_convert_string_norecord
3261 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3262 Vlocale_coding_system
, 0);
3264 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3266 char state
[2] = {'\0', '\0'};
3267 switch (proc
.ki_stat
)
3289 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3292 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3293 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3294 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3297 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3300 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3302 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3303 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3304 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3305 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3306 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3308 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3310 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3312 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3313 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3314 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3316 attrs
= Fcons (Fcons (Qcutime
,
3317 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3319 attrs
= Fcons (Fcons (Qcstime
,
3320 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3322 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3323 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3324 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3326 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3328 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3329 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3330 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3331 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3332 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3335 now
= current_emacs_time ();
3336 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3337 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3339 len
= sizeof fscale
;
3340 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3345 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3347 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3348 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3349 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3353 len
= sizeof npages
;
3354 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3356 double pmem
= (proc
.ki_flag
& P_INMEM
3357 ? 100.0 * proc
.ki_rssize
/ npages
3359 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3362 mib
[2] = KERN_PROC_ARGS
;
3364 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3367 for (i
= 0; i
< len
; i
++)
3369 if (! args
[i
] && i
< len
- 1)
3374 (code_convert_string_norecord
3375 (build_unibyte_string (args
),
3376 Vlocale_coding_system
, 0));
3378 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3385 /* The WINDOWSNT implementation is in w32.c.
3386 The MSDOS implementation is in dosfns.c. */
3387 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3390 system_process_attributes (Lisp_Object pid
)
3395 #endif /* !defined (WINDOWSNT) */