1 /* Interfaces to system-dependent kernel and library entries.
2 Copyright (C) 1985-1988, 1993-1995, 1999-2013 Free Software
5 This file is part of GNU Emacs.
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
22 #define SYSTIME_INLINE EXTERN_INLINE
29 #endif /* HAVE_PWD_H */
34 #include <ignore-value.h>
38 #include "sysselect.h"
39 #include "blockinput.h"
41 #if defined DARWIN_OS || defined __FreeBSD__
42 # include <sys/sysctl.h>
47 #include <sys/resource.h>
53 #define write sys_write
55 #define STDERR_FILENO fileno(GetStdHandle(STD_ERROR_HANDLE))
58 #endif /* not WINDOWSNT */
60 #include <sys/types.h>
64 /* Get SI_SRPC_DOMAIN, if it is available. */
65 #ifdef HAVE_SYS_SYSTEMINFO_H
66 #include <sys/systeminfo.h>
69 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
73 #include <sys/param.h>
80 #ifdef HAVE_SYS_UTSNAME_H
81 #include <sys/utsname.h>
83 #endif /* HAVE_SYS_UTSNAME_H */
88 #include "termhooks.h"
91 #include "dispextern.h"
93 #include "cm.h" /* for reset_sys_modes */
97 /* In process.h which conflicts with the local copy. */
99 int _cdecl
_spawnlp (int, const char *, const char *, ...);
100 int _cdecl
_getpid (void);
103 #include "syssignal.h"
106 static int emacs_get_tty (int, struct emacs_tty
*);
107 static int emacs_set_tty (int, struct emacs_tty
*, int);
109 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
111 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
114 /* Declare here, including term.h is problematic on some systems. */
115 extern void tputs (const char *, int, int (*)(int));
117 static const int baud_convert
[] =
119 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
120 1800, 2400, 4800, 9600, 19200, 38400
124 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
126 /* Return the current working directory. Returns NULL on errors.
127 Any other returned value must be freed with free. This is used
128 only when get_current_dir_name is not defined on the system. */
130 get_current_dir_name (void)
133 char *pwd
= getenv ("PWD");
134 struct stat dotstat
, pwdstat
;
135 /* If PWD is accurate, use it instead of calling getcwd. PWD is
136 sometimes a nicer name, and using it may avoid a fatal error if a
137 parent directory is searchable but not readable. */
139 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
140 && stat (pwd
, &pwdstat
) == 0
141 && stat (".", &dotstat
) == 0
142 && dotstat
.st_ino
== pwdstat
.st_ino
143 && dotstat
.st_dev
== pwdstat
.st_dev
145 && strlen (pwd
) < MAXPATHLEN
149 buf
= malloc (strlen (pwd
) + 1);
156 size_t buf_size
= 1024;
157 buf
= malloc (buf_size
);
162 if (getcwd (buf
, buf_size
) == buf
)
166 int tmp_errno
= errno
;
172 buf
= realloc (buf
, buf_size
);
182 /* Discard pending input on all input descriptors. */
185 discard_tty_input (void)
188 struct emacs_tty buf
;
193 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
194 while (dos_keyread () != -1)
196 #else /* not MSDOS */
198 struct tty_display_info
*tty
;
199 for (tty
= tty_list
; tty
; tty
= tty
->next
)
201 if (tty
->input
) /* Is the device suspended? */
203 emacs_get_tty (fileno (tty
->input
), &buf
);
204 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
208 #endif /* not MSDOS */
209 #endif /* not WINDOWSNT */
215 /* Arrange for character C to be read as the next input from
217 XXX What if we have multiple ttys?
223 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
226 /* Should perhaps error if in batch mode */
228 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
229 #else /* no TIOCSTI */
230 error ("Cannot stuff terminal input characters in this version of Unix");
231 #endif /* no TIOCSTI */
237 init_baud_rate (int fd
)
247 #else /* not DOS_NT */
252 emacs_ospeed
= cfgetospeed (&sg
);
253 #endif /* not DOS_NT */
256 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
257 ? baud_convert
[emacs_ospeed
] : 9600);
266 /* Wait for the subprocess with process id CHILD to terminate or change status.
267 CHILD must be a child process that has not been reaped.
268 If STATUS is non-null, store the waitpid-style exit status into *STATUS
269 and tell wait_reading_process_output that it needs to look around.
270 Use waitpid-style OPTIONS when waiting.
271 If INTERRUPTIBLE, this function is interruptible by a signal.
273 Return CHILD if successful, 0 if no status is available;
274 the latter is possible only when options & NOHANG. */
276 get_child_status (pid_t child
, int *status
, int options
, bool interruptible
)
280 /* Invoke waitpid only with a known process ID; do not invoke
281 waitpid with a nonpositive argument. Otherwise, Emacs might
282 reap an unwanted process by mistake. For example, invoking
283 waitpid (-1, ...) can mess up glib by reaping glib's subprocesses,
284 so that another thread running glib won't find them. */
287 while ((pid
= waitpid (child
, status
, options
)) < 0)
289 /* Check that CHILD is a child process that has not been reaped,
290 and that STATUS and OPTIONS are valid. Otherwise abort,
291 as continuing after this internal error could cause Emacs to
292 become confused and kill innocent-victim processes. */
296 /* Note: the MS-Windows emulation of waitpid calls QUIT
302 /* If successful and status is requested, tell wait_reading_process_output
303 that it needs to wake up and look around. */
304 if (pid
&& status
&& input_available_clear_time
)
305 *input_available_clear_time
= make_emacs_time (0, 0);
310 /* Wait for the subprocess with process id CHILD to terminate.
311 CHILD must be a child process that has not been reaped.
312 If STATUS is non-null, store the waitpid-style exit status into *STATUS
313 and tell wait_reading_process_output that it needs to look around.
314 If INTERRUPTIBLE, this function is interruptible by a signal. */
316 wait_for_termination (pid_t child
, int *status
, bool interruptible
)
318 get_child_status (child
, status
, 0, interruptible
);
321 /* Report whether the subprocess with process id CHILD has changed status.
322 Termination counts as a change of status.
323 CHILD must be a child process that has not been reaped.
324 If STATUS is non-null, store the waitpid-style exit status into *STATUS
325 and tell wait_reading_process_output that it needs to look around.
326 Use waitpid-style OPTIONS to check status, but do not wait.
328 Return CHILD if successful, 0 if no status is available because
329 the process's state has not changed. */
331 child_status_changed (pid_t child
, int *status
, int options
)
333 return get_child_status (child
, status
, WNOHANG
| options
, 0);
337 * flush any pending output
338 * (may flush input as well; it does not matter the way we use it)
342 flush_pending_output (int channel
)
344 /* FIXME: maybe this function should be removed */
347 /* Set up the terminal at the other end of a pseudo-terminal that
348 we will be controlling an inferior through.
349 It should not echo or do line-editing, since that is done
350 in Emacs. No padding needed for insertion into an Emacs buffer. */
353 child_setup_tty (int out
)
358 emacs_get_tty (out
, &s
);
359 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
360 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
362 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
363 Some versions of GNU Hurd do not have FFDLY? */
365 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
366 /* No output delays */
368 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
369 /* No output delays */
372 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
373 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
375 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
378 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
381 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
383 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
384 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
385 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
386 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
389 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
392 #ifdef SIGNALS_VIA_CHARACTERS
393 /* the QUIT and INTR character are used in process_send_signal
394 so set them here to something useful. */
395 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
396 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
397 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
398 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
399 #endif /* not SIGNALS_VIA_CHARACTERS */
402 /* Also, PTY overloads NUL and BREAK.
403 don't ignore break, but don't signal either, so it looks like NUL. */
404 s
.main
.c_iflag
&= ~IGNBRK
;
405 s
.main
.c_iflag
&= ~BRKINT
;
406 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
407 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
408 would force it to 0377. That looks like duplicated code. */
409 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
412 /* We originally enabled ICANON (and set VEOF to 04), and then had
413 process.c send additional EOF chars to flush the output when faced
414 with long lines, but this leads to weird effects when the
415 subprocess has disabled ICANON and ends up seeing those spurious
416 extra EOFs. So we don't send EOFs any more in
417 process.c:send_process. First we tried to disable ICANON by
418 default, so if a subsprocess sets up ICANON, it's his problem (or
419 the Elisp package that talks to it) to deal with lines that are
420 too long. But this disables some features, such as the ability
421 to send EOF signals. So we re-enabled ICANON but there is no
422 more "send eof to flush" going on (which is wrong and unportable
423 in itself). The correct way to handle too much output is to
424 buffer what could not be written and then write it again when
425 select returns ok for writing. This has it own set of
426 problems. Write is now asynchronous, is that a problem? How much
427 do we buffer, and what do we do when that limit is reached? */
429 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
430 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
431 #if 0 /* These settings only apply to non-ICANON mode. */
432 s
.main
.c_cc
[VMIN
] = 1;
433 s
.main
.c_cc
[VTIME
] = 0;
436 emacs_set_tty (out
, &s
, 0);
437 #endif /* not WINDOWSNT */
439 #endif /* not MSDOS */
442 /* Record a signal code and the action for it. */
446 struct sigaction action
;
449 static void save_signal_handlers (struct save_signal
*);
450 static void restore_signal_handlers (struct save_signal
*);
452 /* Suspend the Emacs process; give terminal to its superior. */
460 /* On a system where suspending is not implemented,
461 instead fork a subshell and let it talk directly to the terminal
468 /* Fork a subshell. */
473 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
475 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
479 struct save_signal saved_handlers
[5];
481 unsigned char *volatile str_volatile
= 0;
485 saved_handlers
[0].code
= SIGINT
;
486 saved_handlers
[1].code
= SIGQUIT
;
487 saved_handlers
[2].code
= SIGTERM
;
489 saved_handlers
[3].code
= SIGIO
;
490 saved_handlers
[4].code
= 0;
492 saved_handlers
[3].code
= 0;
495 /* Mentioning current_buffer->buffer would mean including buffer.h,
496 which somehow wedges the hp compiler. So instead... */
498 dir
= intern ("default-directory");
499 if (NILP (Fboundp (dir
)))
501 dir
= Fsymbol_value (dir
);
505 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
506 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
508 memcpy (str
, SDATA (dir
), len
);
509 if (str
[len
- 1] != '/') str
[len
++] = '/';
515 save_signal_handlers (saved_handlers
);
519 error ("Can't spawn subshell");
526 #ifdef DOS_NT /* MW, Aug 1993 */
527 getcwd (oldwd
, sizeof oldwd
);
529 sh
= egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
532 sh
= egetenv ("SHELL");
536 /* Use our buffer's default directory for the subshell. */
538 if (str
&& chdir ((char *) str
) != 0)
541 ignore_value (write (1, "Can't chdir\n", 12));
546 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
548 char *epwd
= getenv ("PWD");
549 char old_pwd
[MAXPATHLEN
+1+4];
551 /* If PWD is set, pass it with corrected value. */
554 strcpy (old_pwd
, epwd
);
555 if (str
[len
- 1] == '/')
557 setenv ("PWD", str
, 1);
560 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
562 putenv (old_pwd
); /* restore previous value */
564 #else /* not MSDOS */
566 /* Waits for process completion */
567 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
568 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
570 write (1, "Can't execute subshell", 22);
571 #else /* not WINDOWSNT */
572 execlp (sh
, sh
, (char *) 0);
573 ignore_value (write (1, "Can't execute subshell", 22));
575 #endif /* not WINDOWSNT */
576 #endif /* not MSDOS */
579 /* Do this now if we did not do it before. */
581 save_signal_handlers (saved_handlers
);
585 wait_for_termination (pid
, &status
, 0);
587 restore_signal_handlers (saved_handlers
);
591 save_signal_handlers (struct save_signal
*saved_handlers
)
593 while (saved_handlers
->code
)
595 struct sigaction action
;
596 emacs_sigaction_init (&action
, SIG_IGN
);
597 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
603 restore_signal_handlers (struct save_signal
*saved_handlers
)
605 while (saved_handlers
->code
)
607 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
613 static int old_fcntl_flags
[MAXDESC
];
620 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
621 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
622 interrupts_deferred
= 0;
630 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
643 sigemptyset (&unblocked
);
645 sigaddset (&unblocked
, SIGWINCH
);
647 sigaddset (&unblocked
, SIGIO
);
648 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
650 interrupts_deferred
= 0;
655 unrequest_sigio (void)
663 sigemptyset (&blocked
);
665 sigaddset (&blocked
, SIGWINCH
);
667 sigaddset (&blocked
, SIGIO
);
668 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
669 interrupts_deferred
= 1;
677 signal (SIGIO
, SIG_IGN
);
682 /* Saving and restoring the process group of Emacs's terminal. */
684 /* The process group of which Emacs was a member when it initially
687 If Emacs was in its own process group (i.e. inherited_pgroup ==
688 getpid ()), then we know we're running under a shell with job
689 control (Emacs would never be run as part of a pipeline).
692 If Emacs was not in its own process group, then we know we're
693 running under a shell (or a caller) that doesn't know how to
694 separate itself from Emacs (like sh). Emacs must be in its own
695 process group in order to receive SIGIO correctly. In this
696 situation, we put ourselves in our own pgroup, forcibly set the
697 tty's pgroup to our pgroup, and make sure to restore and reinstate
698 the tty's pgroup just like any other terminal setting. If
699 inherited_group was not the tty's pgroup, then we'll get a
700 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
701 it goes foreground in the future, which is what should happen. */
703 static pid_t inherited_pgroup
;
706 init_foreground_group (void)
708 pid_t pgrp
= getpgrp ();
709 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
712 /* Block and unblock SIGTTOU. */
715 block_tty_out_signal (void)
719 sigemptyset (&blocked
);
720 sigaddset (&blocked
, SIGTTOU
);
721 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
726 unblock_tty_out_signal (void)
729 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
733 /* Safely set a controlling terminal FD's process group to PGID.
734 If we are not in the foreground already, POSIX requires tcsetpgrp
735 to deliver a SIGTTOU signal, which would stop us. This is an
736 annoyance, so temporarily ignore the signal.
738 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
739 skip all this unless SIGTTOU is defined. */
741 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
745 block_tty_out_signal ();
746 tcsetpgrp (fd
, pgid
);
747 unblock_tty_out_signal ();
752 /* Split off the foreground process group to Emacs alone. When we are
753 in the foreground, but not started in our own process group,
754 redirect the tty device handle FD to point to our own process
755 group. FD must be the file descriptor of the controlling tty. */
757 narrow_foreground_group (int fd
)
759 if (inherited_pgroup
&& setpgid (0, 0) == 0)
760 tcsetpgrp_without_stopping (fd
, getpid ());
763 /* Set the tty to our original foreground group. */
765 widen_foreground_group (int fd
)
767 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
768 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
771 /* Getting and setting emacs_tty structures. */
773 /* Set *TC to the parameters associated with the terminal FD.
774 Return zero if all's well, or -1 if we ran into an error we
775 couldn't deal with. */
777 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
779 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
781 /* We have those nifty POSIX tcmumbleattr functions. */
782 memset (&settings
->main
, 0, sizeof (settings
->main
));
783 if (tcgetattr (fd
, &settings
->main
) < 0)
787 /* We have survived the tempest. */
792 /* Set the parameters of the tty on FD according to the contents of
793 *SETTINGS. If FLUSHP is non-zero, we discard input.
794 Return 0 if all went well, and -1 if anything failed. */
797 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
799 /* Set the primary parameters - baud rate, character size, etcetera. */
802 /* We have those nifty POSIX tcmumbleattr functions.
803 William J. Smith <wjs@wiis.wang.com> writes:
804 "POSIX 1003.1 defines tcsetattr to return success if it was
805 able to perform any of the requested actions, even if some
806 of the requested actions could not be performed.
807 We must read settings back to ensure tty setup properly.
808 AIX requires this to keep tty from hanging occasionally." */
809 /* This make sure that we don't loop indefinitely in here. */
810 for (i
= 0 ; i
< 10 ; i
++)
811 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
822 memset (&new, 0, sizeof (new));
823 /* Get the current settings, and see if they're what we asked for. */
824 tcgetattr (fd
, &new);
825 /* We cannot use memcmp on the whole structure here because under
826 * aix386 the termios structure has some reserved field that may
829 if ( new.c_iflag
== settings
->main
.c_iflag
830 && new.c_oflag
== settings
->main
.c_oflag
831 && new.c_cflag
== settings
->main
.c_cflag
832 && new.c_lflag
== settings
->main
.c_lflag
833 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
840 /* We have survived the tempest. */
847 static int old_fcntl_owner
[MAXDESC
];
848 #endif /* F_SETOWN */
850 /* This may also be defined in stdio,
851 but if so, this does no harm,
852 and using the same name avoids wasting the other one's space. */
855 unsigned char _sobuf
[BUFSIZ
+8];
860 /* Initialize the terminal mode on all tty devices that are currently
864 init_all_sys_modes (void)
866 struct tty_display_info
*tty
;
867 for (tty
= tty_list
; tty
; tty
= tty
->next
)
868 init_sys_modes (tty
);
871 /* Initialize the terminal mode on the given tty device. */
874 init_sys_modes (struct tty_display_info
*tty_out
)
876 struct emacs_tty tty
;
877 Lisp_Object terminal
;
879 Vtty_erase_char
= Qnil
;
884 if (!tty_out
->output
)
885 return; /* The tty is suspended. */
887 narrow_foreground_group (fileno (tty_out
->input
));
889 if (! tty_out
->old_tty
)
890 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
892 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
894 tty
= *tty_out
->old_tty
;
896 #if !defined (DOS_NT)
897 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
899 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
900 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
901 #ifdef INLCR /* I'm just being cautious,
902 since I can't check how widespread INLCR is--rms. */
903 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
906 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
908 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
909 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
911 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
913 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
914 if (tty_out
->flow_control
)
916 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
918 tty
.main
.c_iflag
&= ~IXANY
;
922 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
923 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
925 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
927 if (tty_out
->meta_key
)
929 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
930 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
934 XSETTERMINAL(terminal
, tty_out
->terminal
);
935 if (!NILP (Fcontrolling_tty_p (terminal
)))
937 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
938 /* Set up C-g for both SIGQUIT and SIGINT.
939 We don't know which we will get, but we handle both alike
940 so which one it really gives us does not matter. */
941 tty
.main
.c_cc
[VQUIT
] = quit_char
;
945 /* We normally don't get interrupt or quit signals from tty
946 devices other than our controlling terminal; therefore,
947 we must handle C-g as normal input. Unfortunately, this
948 means that the interrupt and quit feature must be
949 disabled on secondary ttys, or we would not even see the
952 Note that even though emacsclient could have special code
953 to pass SIGINT to Emacs, we should _not_ enable
954 interrupt/quit keys for emacsclient frames. This means
955 that we can't break out of loops in C code from a
956 secondary tty frame, but we can always decide what
957 display the C-g came from, which is more important from a
958 usability point of view. (Consider the case when two
959 people work together using the same Emacs instance.) */
960 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
961 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
963 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
964 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
966 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
971 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
974 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
976 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
977 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
980 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
983 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
984 #endif /* VREPRINT */
986 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
989 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
990 #endif /* VDISCARD */
992 if (tty_out
->flow_control
)
995 tty
.main
.c_cc
[VSTART
] = '\021';
998 tty
.main
.c_cc
[VSTOP
] = '\023';
1004 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
1007 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1012 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
1013 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
1014 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
1015 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
1016 if (tty_out
->flow_control
)
1019 tty
.main
.c_cc
[VSTART
] = '\021';
1022 tty
.main
.c_cc
[VSTOP
] = '\023';
1025 /* Also, PTY overloads NUL and BREAK.
1026 don't ignore break, but don't signal either, so it looks like NUL.
1027 This really serves a purpose only if running in an XTERM window
1028 or via TELNET or the like, but does no harm elsewhere. */
1029 tty
.main
.c_iflag
&= ~IGNBRK
;
1030 tty
.main
.c_iflag
&= ~BRKINT
;
1032 #endif /* not DOS_NT */
1034 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
1035 if (!tty_out
->term_initted
)
1036 internal_terminal_init ();
1037 dos_ttraw (tty_out
);
1040 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1042 /* This code added to insure that, if flow-control is not to be used,
1043 we have an unlocked terminal at the start. */
1046 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1049 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1052 #if !defined (DOS_NT)
1054 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1059 if (interrupt_input
)
1061 old_fcntl_owner
[fileno (tty_out
->input
)] =
1062 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1063 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1064 init_sigio (fileno (tty_out
->input
));
1066 if (gpm_tty
== tty_out
)
1068 /* Arrange for mouse events to give us SIGIO signals. */
1069 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1070 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1071 init_sigio (gpm_fd
);
1073 #endif /* HAVE_GPM */
1075 #endif /* F_GETOWN */
1078 /* This symbol is defined on recent USG systems.
1079 Someone says without this call USG won't really buffer the file
1080 even with a call to setbuf. */
1081 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1083 setbuf (tty_out
->output
, (char *) _sobuf
);
1086 if (tty_out
->terminal
->set_terminal_modes_hook
)
1087 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1089 if (!tty_out
->term_initted
)
1091 Lisp_Object tail
, frame
;
1092 FOR_EACH_FRAME (tail
, frame
)
1094 /* XXX This needs to be revised. */
1095 if (FRAME_TERMCAP_P (XFRAME (frame
))
1096 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1097 init_frame_faces (XFRAME (frame
));
1101 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1103 /* We used to call "direct_output_forward_char(0)" here,
1104 but it's not clear why, since it may not do anything anyway. */
1108 Lisp_Object tail
, frame
;
1110 FOR_EACH_FRAME (tail
, frame
)
1112 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1113 || FRAME_MSDOS_P (XFRAME (frame
)))
1114 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1115 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1119 tty_out
->term_initted
= 1;
1122 /* Return nonzero if safe to use tabs in output.
1123 At the time this is called, init_sys_modes has not been done yet. */
1126 tabs_safe_p (int fd
)
1128 struct emacs_tty etty
;
1130 emacs_get_tty (fd
, &etty
);
1133 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1134 #else /* not TABDLY */
1136 #endif /* not TABDLY */
1142 /* Get terminal size from system.
1143 Store number of lines into *HEIGHTP and width into *WIDTHP.
1144 We store 0 if there's no valid information. */
1147 get_tty_size (int fd
, int *widthp
, int *heightp
)
1149 #if defined TIOCGWINSZ
1152 struct winsize size
;
1154 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1155 *widthp
= *heightp
= 0;
1158 *widthp
= size
.ws_col
;
1159 *heightp
= size
.ws_row
;
1162 #elif defined TIOCGSIZE
1164 /* SunOS - style. */
1165 struct ttysize size
;
1167 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1168 *widthp
= *heightp
= 0;
1171 *widthp
= size
.ts_cols
;
1172 *heightp
= size
.ts_lines
;
1175 #elif defined WINDOWSNT
1177 CONSOLE_SCREEN_BUFFER_INFO info
;
1178 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1180 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1181 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1184 *widthp
= *heightp
= 0;
1188 *widthp
= ScreenCols ();
1189 *heightp
= ScreenRows ();
1191 #else /* system doesn't know size */
1199 /* Set the logical window size associated with descriptor FD
1200 to HEIGHT and WIDTH. This is used mainly with ptys. */
1203 set_window_size (int fd
, int height
, int width
)
1208 struct winsize size
;
1209 size
.ws_row
= height
;
1210 size
.ws_col
= width
;
1212 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1213 return 0; /* error */
1220 /* SunOS - style. */
1221 struct ttysize size
;
1222 size
.ts_lines
= height
;
1223 size
.ts_cols
= width
;
1225 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1231 #endif /* not SunOS-style */
1232 #endif /* not BSD-style */
1237 /* Prepare all terminal devices for exiting Emacs. */
1240 reset_all_sys_modes (void)
1242 struct tty_display_info
*tty
;
1243 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1244 reset_sys_modes (tty
);
1247 /* Prepare the terminal for closing it; move the cursor to the
1248 bottom of the frame, turn off interrupt-driven I/O, etc. */
1251 reset_sys_modes (struct tty_display_info
*tty_out
)
1258 if (!tty_out
->term_initted
)
1261 if (!tty_out
->output
)
1262 return; /* The tty is suspended. */
1264 /* Go to and clear the last line of the terminal. */
1266 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1268 /* Code adapted from tty_clear_end_of_line. */
1269 if (tty_out
->TS_clr_line
)
1271 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1274 { /* have to do it the hard way */
1276 tty_turn_off_insert (tty_out
);
1278 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1280 fputc (' ', tty_out
->output
);
1284 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1285 fflush (tty_out
->output
);
1287 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1288 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1290 /* Avoid possible loss of output when changing terminal modes. */
1291 while (fdatasync (fileno (tty_out
->output
)) != 0 && errno
== EINTR
)
1296 if (interrupt_input
)
1298 reset_sigio (fileno (tty_out
->input
));
1299 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1300 old_fcntl_owner
[fileno (tty_out
->input
)]);
1302 #endif /* F_SETOWN */
1303 fcntl (fileno (tty_out
->input
), F_SETFL
,
1304 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1307 if (tty_out
->old_tty
)
1308 while (emacs_set_tty (fileno (tty_out
->input
),
1309 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1312 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1316 widen_foreground_group (fileno (tty_out
->input
));
1321 /* Set up the proper status flags for use of a pty. */
1326 /* I'm told that TOICREMOTE does not mean control chars
1327 "can't be sent" but rather that they don't have
1328 input-editing or signaling effects.
1329 That should be good, because we have other ways
1330 to do those things in Emacs.
1331 However, telnet mode seems not to work on 4.2.
1332 So TIOCREMOTE is turned off now. */
1334 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1335 will hang. In particular, the "timeout" feature (which
1336 causes a read to return if there is no data available)
1337 does this. Also it is known that telnet mode will hang
1338 in such a way that Emacs must be stopped (perhaps this
1339 is the same problem).
1341 If TIOCREMOTE is turned off, then there is a bug in
1342 hp-ux which sometimes loses data. Apparently the
1343 code which blocks the master process when the internal
1344 buffer fills up does not work. Other than this,
1345 though, everything else seems to work fine.
1347 Since the latter lossage is more benign, we may as well
1348 lose that way. -- cph */
1350 #if defined (UNIX98_PTYS)
1353 ioctl (fd
, FIONBIO
, &on
);
1358 #endif /* HAVE_PTYS */
1361 #include <sys/socket.h>
1363 #endif /* HAVE_SOCKETS */
1366 #ifndef HAVE_H_ERRNO
1369 #endif /* TRY_AGAIN */
1372 init_system_name (void)
1374 #ifndef HAVE_GETHOSTNAME
1377 Vsystem_name
= build_string (uts
.nodename
);
1378 #else /* HAVE_GETHOSTNAME */
1379 unsigned int hostname_size
= 256;
1380 char *hostname
= alloca (hostname_size
);
1382 /* Try to get the host name; if the buffer is too short, try
1383 again. Apparently, the only indication gethostname gives of
1384 whether the buffer was large enough is the presence or absence
1385 of a '\0' in the string. Eech. */
1388 gethostname (hostname
, hostname_size
- 1);
1389 hostname
[hostname_size
- 1] = '\0';
1391 /* Was the buffer large enough for the '\0'? */
1392 if (strlen (hostname
) < hostname_size
- 1)
1395 hostname_size
<<= 1;
1396 hostname
= alloca (hostname_size
);
1399 /* Turn the hostname into the official, fully-qualified hostname.
1400 Don't do this if we're going to dump; this can confuse system
1401 libraries on some machines and make the dumped emacs core dump. */
1404 #endif /* not CANNOT_DUMP */
1405 if (! strchr (hostname
, '.'))
1408 #ifdef HAVE_GETADDRINFO
1409 struct addrinfo
*res
;
1410 struct addrinfo hints
;
1413 memset (&hints
, 0, sizeof (hints
));
1414 hints
.ai_socktype
= SOCK_STREAM
;
1415 hints
.ai_flags
= AI_CANONNAME
;
1417 for (count
= 0;; count
++)
1419 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1420 || ret
!= EAI_AGAIN
)
1425 Fsleep_for (make_number (1), Qnil
);
1430 struct addrinfo
*it
= res
;
1433 char *fqdn
= it
->ai_canonname
;
1434 if (fqdn
&& strchr (fqdn
, '.')
1435 && strcmp (fqdn
, "localhost.localdomain") != 0)
1441 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1442 strcpy (hostname
, it
->ai_canonname
);
1446 #else /* !HAVE_GETADDRINFO */
1448 for (count
= 0;; count
++)
1454 hp
= gethostbyname (hostname
);
1456 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1463 Fsleep_for (make_number (1), Qnil
);
1468 char *fqdn
= (char *) hp
->h_name
;
1470 if (!strchr (fqdn
, '.'))
1472 /* We still don't have a fully qualified domain name.
1473 Try to find one in the list of alternate names */
1474 char **alias
= hp
->h_aliases
;
1476 && (!strchr (*alias
, '.')
1477 || !strcmp (*alias
, "localhost.localdomain")))
1484 #endif /* !HAVE_GETADDRINFO */
1486 #endif /* HAVE_SOCKETS */
1487 Vsystem_name
= build_string (hostname
);
1488 #endif /* HAVE_GETHOSTNAME */
1491 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1492 if (*p
== ' ' || *p
== '\t')
1497 sigset_t empty_mask
;
1499 static struct sigaction process_fatal_action
;
1502 emacs_sigaction_flags (void)
1505 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1506 'select') to reset their timeout on some platforms (e.g.,
1507 HP-UX 11), which is not what we want. Also, when Emacs is
1508 interactive, we don't want SA_RESTART because we need to poll
1509 for pending input so we need long-running syscalls to be interrupted
1510 after a signal that sets pending_signals.
1512 Non-interactive keyboard input goes through stdio, where we
1513 always want restartable system calls. */
1520 /* Store into *ACTION a signal action suitable for Emacs, with handler
1523 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1525 sigemptyset (&action
->sa_mask
);
1527 /* When handling a signal, block nonfatal system signals that are caught
1528 by Emacs. This makes race conditions less likely. */
1529 sigaddset (&action
->sa_mask
, SIGALRM
);
1530 sigaddset (&action
->sa_mask
, SIGCHLD
);
1532 sigaddset (&action
->sa_mask
, SIGDANGER
);
1534 #ifdef PROFILER_CPU_SUPPORT
1535 sigaddset (&action
->sa_mask
, SIGPROF
);
1538 sigaddset (&action
->sa_mask
, SIGWINCH
);
1540 if (! noninteractive
)
1542 sigaddset (&action
->sa_mask
, SIGINT
);
1543 sigaddset (&action
->sa_mask
, SIGQUIT
);
1545 sigaddset (&action
->sa_mask
, SIGIO
);
1549 if (! IEEE_FLOATING_POINT
)
1550 sigaddset (&action
->sa_mask
, SIGFPE
);
1552 action
->sa_handler
= handler
;
1553 action
->sa_flags
= emacs_sigaction_flags ();
1556 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1557 static pthread_t main_thread
;
1560 /* SIG has arrived at the current process. Deliver it to the main
1561 thread, which should handle it with HANDLER.
1563 If we are on the main thread, handle the signal SIG with HANDLER.
1564 Otherwise, redirect the signal to the main thread, blocking it from
1565 this thread. POSIX says any thread can receive a signal that is
1566 associated with a process, process group, or asynchronous event.
1567 On GNU/Linux that is not true, but for other systems (FreeBSD at
1570 deliver_process_signal (int sig
, signal_handler_t handler
)
1572 /* Preserve errno, to avoid race conditions with signal handlers that
1573 might change errno. Races can occur even in single-threaded hosts. */
1574 int old_errno
= errno
;
1576 bool on_main_thread
= true;
1577 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1578 if (! pthread_equal (pthread_self (), main_thread
))
1581 sigemptyset (&blocked
);
1582 sigaddset (&blocked
, sig
);
1583 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1584 pthread_kill (main_thread
, sig
);
1585 on_main_thread
= false;
1594 /* Static location to save a fatal backtrace in a thread.
1595 FIXME: If two subsidiary threads fail simultaneously, the resulting
1596 backtrace may be garbage. */
1597 enum { BACKTRACE_LIMIT_MAX
= 500 };
1598 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1599 static int thread_backtrace_npointers
;
1601 /* SIG has arrived at the current thread.
1602 If we are on the main thread, handle the signal SIG with HANDLER.
1603 Otherwise, this is a fatal error in the handling thread. */
1605 deliver_thread_signal (int sig
, signal_handler_t handler
)
1607 int old_errno
= errno
;
1609 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1610 if (! pthread_equal (pthread_self (), main_thread
))
1612 thread_backtrace_npointers
1613 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1614 sigaction (sig
, &process_fatal_action
, 0);
1615 pthread_kill (main_thread
, sig
);
1617 /* Avoid further damage while the main thread is exiting. */
1619 sigsuspend (&empty_mask
);
1627 #if !HAVE_DECL_SYS_SIGLIST
1629 # ifdef _sys_siglist
1630 # define sys_siglist _sys_siglist
1631 # elif HAVE_DECL___SYS_SIGLIST
1632 # define sys_siglist __sys_siglist
1634 # define sys_siglist my_sys_siglist
1635 static char const *sys_siglist
[NSIG
];
1640 # define sys_siglist_entries _sys_nsig
1642 # define sys_siglist_entries NSIG
1645 /* Handle bus errors, invalid instruction, etc. */
1647 handle_fatal_signal (int sig
)
1649 terminate_due_to_signal (sig
, 40);
1653 deliver_fatal_signal (int sig
)
1655 deliver_process_signal (sig
, handle_fatal_signal
);
1659 deliver_fatal_thread_signal (int sig
)
1661 deliver_thread_signal (sig
, handle_fatal_signal
);
1664 static _Noreturn
void
1665 handle_arith_signal (int sig
)
1667 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1668 xsignal0 (Qarith_error
);
1672 deliver_arith_signal (int sig
)
1674 deliver_thread_signal (sig
, handle_arith_signal
);
1679 /* Handler for SIGDANGER. */
1681 handle_danger_signal (int sig
)
1683 malloc_warning ("Operating system warns that virtual memory is running low.\n");
1685 /* It might be unsafe to call do_auto_save now. */
1686 force_auto_save_soon ();
1690 deliver_danger_signal (int sig
)
1692 deliver_process_signal (sig
, handle_danger_signal
);
1696 /* Treat SIG as a terminating signal, unless it is already ignored and
1697 we are in --batch mode. Among other things, this makes nohup work. */
1699 maybe_fatal_sig (int sig
)
1701 bool catch_sig
= !noninteractive
;
1704 struct sigaction old_action
;
1705 sigaction (sig
, 0, &old_action
);
1706 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1709 sigaction (sig
, &process_fatal_action
, 0);
1713 init_signals (bool dumping
)
1715 struct sigaction thread_fatal_action
;
1716 struct sigaction action
;
1718 sigemptyset (&empty_mask
);
1720 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1721 main_thread
= pthread_self ();
1724 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1727 sys_siglist
[SIGABRT
] = "Aborted";
1729 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1731 sys_siglist
[SIGALRM
] = "Alarm clock";
1733 sys_siglist
[SIGBUS
] = "Bus error";
1735 sys_siglist
[SIGCHLD
] = "Child status changed";
1737 sys_siglist
[SIGCONT
] = "Continued";
1740 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1743 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1746 sys_siglist
[SIGEMT
] = "Emulation trap";
1748 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1750 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1753 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1755 sys_siglist
[SIGHUP
] = "Hangup";
1756 sys_siglist
[SIGILL
] = "Illegal instruction";
1757 sys_siglist
[SIGINT
] = "Interrupt";
1759 sys_siglist
[SIGIO
] = "I/O possible";
1762 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1765 sys_siglist
[SIGIOT
] = "IOT trap";
1767 sys_siglist
[SIGKILL
] = "Killed";
1769 sys_siglist
[SIGLOST
] = "Resource lost";
1772 sys_siglist
[SIGLWP
] = "SIGLWP";
1775 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1778 sys_siglist
[SIGWIND
] = "SIGPHONE";
1780 sys_siglist
[SIGPIPE
] = "Broken pipe";
1782 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1785 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1788 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1791 sys_siglist
[SIGPWR
] = "Power-fail restart";
1793 sys_siglist
[SIGQUIT
] = "Quit";
1795 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1798 sys_siglist
[SIGSAK
] = "Secure attention";
1800 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1802 sys_siglist
[SIGSOUND
] = "Sound completed";
1805 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1808 sys_siglist
[SIGSTP
] = "Stopped (user)";
1811 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1813 sys_siglist
[SIGTERM
] = "Terminated";
1815 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1818 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1821 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1824 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1827 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1830 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1833 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1836 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1839 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1842 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1845 sys_siglist
[SIGWINCH
] = "Window size changed";
1848 sys_siglist
[SIGWIND
] = "SIGWIND";
1851 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1854 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1857 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1859 /* Don't alter signal handlers if dumping. On some machines,
1860 changing signal handlers sets static data that would make signals
1861 fail to work right when the dumped Emacs is run. */
1865 sigfillset (&process_fatal_action
.sa_mask
);
1866 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1867 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1869 sigfillset (&thread_fatal_action
.sa_mask
);
1870 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1871 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1873 /* SIGINT may need special treatment on MS-Windows. See
1874 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1875 Please update the doc of kill-emacs, kill-emacs-hook, and
1876 NEWS if you change this. */
1878 maybe_fatal_sig (SIGHUP
);
1879 maybe_fatal_sig (SIGINT
);
1880 maybe_fatal_sig (SIGTERM
);
1882 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1883 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1884 to behave more like typical batch applications do. */
1885 if (! noninteractive
)
1886 signal (SIGPIPE
, SIG_IGN
);
1888 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1889 sigaction (SIGILL
, &thread_fatal_action
, 0);
1890 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1892 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1893 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1894 interpreter's floating point operations, so treat SIGFPE as an
1895 arith-error if it arises in the main thread. */
1896 if (IEEE_FLOATING_POINT
)
1897 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1900 emacs_sigaction_init (&action
, deliver_arith_signal
);
1901 sigaction (SIGFPE
, &action
, 0);
1905 add_user_signal (SIGUSR1
, "sigusr1");
1908 add_user_signal (SIGUSR2
, "sigusr2");
1910 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1912 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1915 sigaction (SIGORE
, &thread_fatal_action
, 0);
1918 sigaction (SIGUME
, &thread_fatal_action
, 0);
1921 sigaction (SIGDLK
, &process_fatal_action
, 0);
1924 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1927 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1930 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1933 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1935 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1937 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1939 sigaction (SIGTERM
, &process_fatal_action
, 0);
1941 signal (SIGPROF
, SIG_IGN
);
1944 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1947 sigaction (SIGXCPU
, &process_fatal_action
, 0);
1950 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1954 /* This just means available memory is getting low. */
1955 emacs_sigaction_init (&action
, deliver_danger_signal
);
1956 sigaction (SIGDANGER
, &action
, 0);
1959 /* AIX-specific signals. */
1961 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1964 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1967 sigaction (SIGMSG
, &process_fatal_action
, 0);
1970 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1973 sigaction (SIGSAK
, &process_fatal_action
, 0);
1976 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1979 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1989 /* Figure out how many bits the system's random number generator uses.
1990 `random' and `lrand48' are assumed to return 31 usable bits.
1991 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1992 so we'll shift it and treat it like the 15-bit USG `rand'. */
1996 # define RAND_BITS 31
1997 # else /* !HAVE_RANDOM */
1998 # ifdef HAVE_LRAND48
1999 # define RAND_BITS 31
2000 # define random lrand48
2001 # else /* !HAVE_LRAND48 */
2002 # define RAND_BITS 15
2003 # if RAND_MAX == 32767
2004 # define random rand
2005 # else /* RAND_MAX != 32767 */
2006 # if RAND_MAX == 2147483647
2007 # define random() (rand () >> 16)
2008 # else /* RAND_MAX != 2147483647 */
2010 # define random rand
2012 # define random() (rand () >> 16)
2014 # endif /* RAND_MAX != 2147483647 */
2015 # endif /* RAND_MAX != 32767 */
2016 # endif /* !HAVE_LRAND48 */
2017 # endif /* !HAVE_RANDOM */
2018 #endif /* !RAND_BITS */
2021 seed_random (void *seed
, ptrdiff_t seed_size
)
2023 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
2024 unsigned int arg
= 0;
2028 unsigned char *argp
= (unsigned char *) &arg
;
2029 unsigned char *seedp
= seed
;
2031 for (i
= 0; i
< seed_size
; i
++)
2032 argp
[i
% sizeof arg
] ^= seedp
[i
];
2036 # ifdef HAVE_LRAND48
2047 EMACS_TIME t
= current_emacs_time ();
2048 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
2049 seed_random (&v
, sizeof v
);
2053 * Return a nonnegative random integer out of whatever we've got.
2054 * It contains enough bits to make a random (signed) Emacs fixnum.
2055 * This suffices even for a 64-bit architecture with a 15-bit rand.
2062 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2063 val
= (random () ^ (val
<< RAND_BITS
)
2064 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2065 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2066 return val
& INTMASK
;
2069 #ifndef HAVE_SNPRINTF
2070 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2072 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2074 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2075 ptrdiff_t nbytes
= size
- 1;
2080 va_start (ap
, format
);
2081 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2085 if (nbytes
== size
- 1)
2087 /* Calculate the length of the string that would have been created
2088 had the buffer been large enough. */
2089 char stackbuf
[4000];
2091 ptrdiff_t bsize
= sizeof stackbuf
;
2092 va_start (ap
, format
);
2093 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2099 if (INT_MAX
< nbytes
)
2112 /* If a backtrace is available, output the top lines of it to stderr.
2113 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2114 This function may be called from a signal handler, so it should
2115 not invoke async-unsafe functions like malloc. */
2117 emacs_backtrace (int backtrace_limit
)
2119 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2120 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2124 if (thread_backtrace_npointers
)
2126 buffer
= thread_backtrace_buffer
;
2127 npointers
= thread_backtrace_npointers
;
2131 buffer
= main_backtrace_buffer
;
2132 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2137 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
2138 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2139 if (bounded_limit
< npointers
)
2140 ignore_value (write (STDERR_FILENO
, "...\n", 4));
2148 terminate_due_to_signal (SIGABRT
, 40);
2152 /* Open FILE for Emacs use, using open flags OFLAG and mode MODE.
2153 Arrange for subprograms to not inherit the file descriptor.
2154 Prefer a method that is multithread-safe, if available.
2155 Do not fail merely because the open was interrupted by a signal.
2156 Allow the user to quit. */
2159 emacs_open (const char *file
, int oflags
, int mode
)
2162 oflags
|= O_CLOEXEC
;
2163 while ((fd
= open (file
, oflags
, mode
)) < 0 && errno
== EINTR
)
2165 if (! O_CLOEXEC
&& 0 <= fd
)
2166 fcntl (fd
, F_SETFD
, FD_CLOEXEC
);
2170 /* Open FILE as a stream for Emacs use, with mode MODE.
2171 Act like emacs_open with respect to threads, signals, and quits. */
2174 emacs_fopen (char const *file
, char const *mode
)
2176 int fd
, omode
, oflags
;
2178 char const *m
= mode
;
2182 case 'r': omode
= O_RDONLY
; oflags
= 0; break;
2183 case 'w': omode
= O_WRONLY
; oflags
= O_CREAT
| O_TRUNC
; break;
2184 case 'a': omode
= O_WRONLY
; oflags
= O_CREAT
| O_APPEND
; break;
2185 default: emacs_abort ();
2191 case '+': omode
= O_RDWR
; break;
2192 case 'b': bflag
= O_BINARY
; break;
2193 case 't': bflag
= O_TEXT
; break;
2194 default: /* Ignore. */ break;
2197 fd
= emacs_open (file
, omode
| oflags
| bflag
, 0666);
2198 return fd
< 0 ? 0 : fdopen (fd
, mode
);
2202 emacs_close (int fd
)
2205 register int rtnval
;
2207 while ((rtnval
= close (fd
)) == -1
2208 && (errno
== EINTR
))
2211 /* If close is interrupted SunOS 4.1 may or may not have closed the
2212 file descriptor. If it did the second close will fail with
2213 errno = EBADF. That means we have succeeded. */
2214 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2220 /* Maximum number of bytes to read or write in a single system call.
2221 This works around a serious bug in Linux kernels before 2.6.16; see
2222 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2223 It's likely to work around similar bugs in other operating systems, so do it
2224 on all platforms. Round INT_MAX down to a page size, with the conservative
2225 assumption that page sizes are at most 2**18 bytes (any kernel with a
2226 page size larger than that shouldn't have the bug). */
2227 #ifndef MAX_RW_COUNT
2228 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2231 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2232 Return the number of bytes read, which might be less than NBYTE.
2233 On error, set errno and return -1. */
2235 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
2237 register ssize_t rtnval
;
2239 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2240 passes a size that large to emacs_read. */
2242 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2243 && (errno
== EINTR
))
2248 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2249 or if a partial write occurs. Return the number of bytes written, setting
2250 errno if this is less than NBYTE. */
2252 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
2255 ptrdiff_t bytes_written
;
2261 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2267 /* I originally used `QUIT' but that might causes files to
2268 be truncated if you hit C-g in the middle of it. --Stef */
2269 if (pending_signals
)
2270 process_pending_signals ();
2279 bytes_written
+= rtnval
;
2282 return (bytes_written
);
2285 /* Return a struct timeval that is roughly equivalent to T.
2286 Use the least timeval not less than T.
2287 Return an extremal value if the result would overflow. */
2289 make_timeval (EMACS_TIME t
)
2292 tv
.tv_sec
= t
.tv_sec
;
2293 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2295 if (t
.tv_nsec
% 1000 != 0)
2297 if (tv
.tv_usec
< 999999)
2299 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2309 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2310 ATIME and MTIME, respectively.
2311 FD must be either negative -- in which case it is ignored --
2312 or a file descriptor that is open on FILE.
2313 If FD is nonnegative, then FILE can be NULL. */
2315 set_file_times (int fd
, const char *filename
,
2316 EMACS_TIME atime
, EMACS_TIME mtime
)
2318 struct timespec timespec
[2];
2319 timespec
[0] = atime
;
2320 timespec
[1] = mtime
;
2321 return fdutimens (fd
, filename
, timespec
);
2324 /* Like strsignal, except async-signal-safe, and this function typically
2325 returns a string in the C locale rather than the current locale. */
2327 safe_strsignal (int code
)
2329 char const *signame
= 0;
2331 if (0 <= code
&& code
< sys_siglist_entries
)
2332 signame
= sys_siglist
[code
];
2334 signame
= "Unknown signal";
2340 /* For make-serial-process */
2342 serial_open (char *port
)
2344 int fd
= emacs_open (port
, O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2347 error ("Could not open %s: %s",
2348 port
, emacs_strerror (errno
));
2351 ioctl (fd
, TIOCEXCL
, (char *) 0);
2357 #if !defined (HAVE_CFMAKERAW)
2358 /* Workaround for targets which are missing cfmakeraw. */
2359 /* Pasted from man page. */
2361 cfmakeraw (struct termios
*termios_p
)
2363 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2364 termios_p
->c_oflag
&= ~OPOST
;
2365 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2366 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2367 termios_p
->c_cflag
|= CS8
;
2369 #endif /* !defined (HAVE_CFMAKERAW */
2371 #if !defined (HAVE_CFSETSPEED)
2372 /* Workaround for targets which are missing cfsetspeed. */
2374 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2376 return (cfsetispeed (termios_p
, vitesse
)
2377 + cfsetospeed (termios_p
, vitesse
));
2381 /* For serial-process-configure */
2383 serial_configure (struct Lisp_Process
*p
,
2384 Lisp_Object contact
)
2386 Lisp_Object childp2
= Qnil
;
2387 Lisp_Object tem
= Qnil
;
2388 struct termios attr
;
2390 char summary
[4] = "???"; /* This usually becomes "8N1". */
2392 childp2
= Fcopy_sequence (p
->childp
);
2394 /* Read port attributes and prepare default configuration. */
2395 err
= tcgetattr (p
->outfd
, &attr
);
2397 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2399 #if defined (CLOCAL)
2400 attr
.c_cflag
|= CLOCAL
;
2403 attr
.c_cflag
|= CREAD
;
2406 /* Configure speed. */
2407 if (!NILP (Fplist_member (contact
, QCspeed
)))
2408 tem
= Fplist_get (contact
, QCspeed
);
2410 tem
= Fplist_get (p
->childp
, QCspeed
);
2412 err
= cfsetspeed (&attr
, XINT (tem
));
2414 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2415 emacs_strerror (errno
));
2416 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2418 /* Configure bytesize. */
2419 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2420 tem
= Fplist_get (contact
, QCbytesize
);
2422 tem
= Fplist_get (p
->childp
, QCbytesize
);
2424 tem
= make_number (8);
2426 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2427 error (":bytesize must be nil (8), 7, or 8");
2428 summary
[0] = XINT (tem
) + '0';
2429 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2430 attr
.c_cflag
&= ~CSIZE
;
2431 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2433 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2434 if (XINT (tem
) != 8)
2435 error ("Bytesize cannot be changed");
2437 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2439 /* Configure parity. */
2440 if (!NILP (Fplist_member (contact
, QCparity
)))
2441 tem
= Fplist_get (contact
, QCparity
);
2443 tem
= Fplist_get (p
->childp
, QCparity
);
2444 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2445 error (":parity must be nil (no parity), `even', or `odd'");
2446 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2447 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2448 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2453 else if (EQ (tem
, Qeven
))
2456 attr
.c_cflag
|= PARENB
;
2457 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2459 else if (EQ (tem
, Qodd
))
2462 attr
.c_cflag
|= (PARENB
| PARODD
);
2463 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2466 /* Don't error on no parity, which should be set by cfmakeraw. */
2468 error ("Parity cannot be configured");
2470 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2472 /* Configure stopbits. */
2473 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2474 tem
= Fplist_get (contact
, QCstopbits
);
2476 tem
= Fplist_get (p
->childp
, QCstopbits
);
2478 tem
= make_number (1);
2480 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2481 error (":stopbits must be nil (1 stopbit), 1, or 2");
2482 summary
[2] = XINT (tem
) + '0';
2483 #if defined (CSTOPB)
2484 attr
.c_cflag
&= ~CSTOPB
;
2485 if (XINT (tem
) == 2)
2486 attr
.c_cflag
|= CSTOPB
;
2488 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2489 if (XINT (tem
) != 1)
2490 error ("Stopbits cannot be configured");
2492 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2494 /* Configure flowcontrol. */
2495 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2496 tem
= Fplist_get (contact
, QCflowcontrol
);
2498 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2499 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2500 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2501 #if defined (CRTSCTS)
2502 attr
.c_cflag
&= ~CRTSCTS
;
2504 #if defined (CNEW_RTSCTS)
2505 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2507 #if defined (IXON) && defined (IXOFF)
2508 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2512 /* Already configured. */
2514 else if (EQ (tem
, Qhw
))
2516 #if defined (CRTSCTS)
2517 attr
.c_cflag
|= CRTSCTS
;
2518 #elif defined (CNEW_RTSCTS)
2519 attr
.c_cflag
|= CNEW_RTSCTS
;
2521 error ("Hardware flowcontrol (RTS/CTS) not supported");
2524 else if (EQ (tem
, Qsw
))
2526 #if defined (IXON) && defined (IXOFF)
2527 attr
.c_iflag
|= (IXON
| IXOFF
);
2529 error ("Software flowcontrol (XON/XOFF) not supported");
2532 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2534 /* Activate configuration. */
2535 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2537 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2539 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2540 pset_childp (p
, childp2
);
2542 #endif /* not DOS_NT */
2544 /* System depended enumeration of and access to system processes a-la ps(1). */
2548 /* Process enumeration and access via /proc. */
2551 list_system_processes (void)
2553 Lisp_Object procdir
, match
, proclist
, next
;
2554 struct gcpro gcpro1
, gcpro2
;
2555 register Lisp_Object tail
;
2557 GCPRO2 (procdir
, match
);
2558 /* For every process on the system, there's a directory in the
2559 "/proc" pseudo-directory whose name is the numeric ID of that
2561 procdir
= build_string ("/proc");
2562 match
= build_string ("[0-9]+");
2563 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2565 /* `proclist' gives process IDs as strings. Destructively convert
2566 each string into a number. */
2567 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2570 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2574 /* directory_files_internal returns the files in reverse order; undo
2576 proclist
= Fnreverse (proclist
);
2580 #elif defined DARWIN_OS || defined __FreeBSD__
2583 list_system_processes (void)
2586 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2588 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2591 struct kinfo_proc
*procs
;
2594 struct gcpro gcpro1
;
2595 Lisp_Object proclist
= Qnil
;
2597 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2600 procs
= xmalloc (len
);
2601 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2608 len
/= sizeof (struct kinfo_proc
);
2609 for (i
= 0; i
< len
; i
++)
2612 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2614 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2624 /* The WINDOWSNT implementation is in w32.c.
2625 The MSDOS implementation is in dosfns.c. */
2626 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2629 list_system_processes (void)
2634 #endif /* !defined (WINDOWSNT) */
2638 time_from_jiffies (unsigned long long tval
, long hz
)
2640 unsigned long long s
= tval
/ hz
;
2641 unsigned long long frac
= tval
% hz
;
2644 if (TYPE_MAXIMUM (time_t) < s
)
2646 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2647 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2648 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2651 /* This is reachable only in the unlikely case that HZ * HZ
2652 exceeds ULLONG_MAX. It calculates an approximation that is
2653 guaranteed to be in range. */
2654 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2655 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2656 ns
= frac
/ hz_per_ns
;
2659 return make_emacs_time (s
, ns
);
2663 ltime_from_jiffies (unsigned long long tval
, long hz
)
2665 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2666 return make_lisp_time (t
);
2673 EMACS_TIME up
= make_emacs_time (0, 0);
2676 fup
= emacs_fopen ("/proc/uptime", "r");
2680 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2681 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2683 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2684 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2685 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2688 if (TYPE_MAXIMUM (time_t) < upsec
)
2690 upsec
= TYPE_MAXIMUM (time_t);
2691 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2695 int upfraclen
= upfrac_end
- upfrac_start
;
2696 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2698 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2700 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2702 up
= make_emacs_time (upsec
, upfrac
);
2711 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2712 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2715 procfs_ttyname (int rdev
)
2718 char name
[PATH_MAX
];
2721 fdev
= emacs_fopen ("/proc/tty/drivers", "r");
2726 unsigned long minor_beg
, minor_end
;
2727 char minor
[25]; /* 2 32-bit numbers + dash */
2730 while (!feof (fdev
) && !ferror (fdev
))
2732 if (fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
) >= 3
2733 && major
== MAJOR (rdev
))
2735 minor_beg
= strtoul (minor
, &endp
, 0);
2737 minor_end
= minor_beg
;
2738 else if (*endp
== '-')
2739 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2743 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2745 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2753 return build_string (name
);
2756 static unsigned long
2757 procfs_get_total_memory (void)
2760 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2763 fmem
= emacs_fopen ("/proc/meminfo", "r");
2767 unsigned long entry_value
;
2768 char entry_name
[20]; /* the longest I saw is 13+1 */
2770 while (!feof (fmem
) && !ferror (fmem
))
2772 if (fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
) >= 2
2773 && strcmp (entry_name
, "MemTotal:") == 0)
2775 retval
= entry_value
;
2786 system_process_attributes (Lisp_Object pid
)
2788 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2792 long clocks_per_sec
;
2794 char procbuf
[1025], *p
, *q
;
2797 static char const default_cmd
[] = "???";
2798 const char *cmd
= default_cmd
;
2799 int cmdsize
= sizeof default_cmd
- 1;
2800 char *cmdline
= NULL
;
2801 ptrdiff_t cmdline_size
;
2804 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2807 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2808 long priority
, niceness
, rss
;
2809 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2810 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2812 Lisp_Object attrs
= Qnil
;
2813 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2814 struct gcpro gcpro1
, gcpro2
;
2816 CHECK_NUMBER_OR_FLOAT (pid
);
2817 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2818 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2819 if (stat (procfn
, &st
) < 0)
2822 GCPRO2 (attrs
, decoded_cmd
);
2826 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2828 pw
= getpwuid (uid
);
2831 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2834 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2836 gr
= getgrgid (gid
);
2839 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2841 strcpy (fn
, procfn
);
2842 procfn_end
= fn
+ strlen (fn
);
2843 strcpy (procfn_end
, "/stat");
2844 fd
= emacs_open (fn
, O_RDONLY
, 0);
2845 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2847 procbuf
[nread
] = '\0';
2850 p
= strchr (p
, '(');
2853 q
= strrchr (p
+ 1, ')');
2863 /* Command name is encoded in locale-coding-system; decode it. */
2864 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2865 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2866 Vlocale_coding_system
, 0);
2867 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2871 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2873 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2874 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2875 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2876 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2877 &u_time
, &s_time
, &cutime
, &cstime
,
2878 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2883 state_str
[1] = '\0';
2884 tem
= build_string (state_str
);
2885 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2887 /* Stops GCC whining about limited range of data type. */
2892 thcount_eint
= thcount
;
2893 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2894 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2895 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2896 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2897 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2898 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2899 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2900 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2901 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2902 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2903 if (clocks_per_sec
< 0)
2904 clocks_per_sec
= 100;
2905 attrs
= Fcons (Fcons (Qutime
,
2906 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2908 attrs
= Fcons (Fcons (Qstime
,
2909 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2911 attrs
= Fcons (Fcons (Qtime
,
2912 ltime_from_jiffies (s_time
+ u_time
,
2915 attrs
= Fcons (Fcons (Qcutime
,
2916 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2918 attrs
= Fcons (Fcons (Qcstime
,
2919 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2921 attrs
= Fcons (Fcons (Qctime
,
2922 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2924 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2925 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2926 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2927 tnow
= current_emacs_time ();
2928 telapsed
= get_up_time ();
2929 tboot
= sub_emacs_time (tnow
, telapsed
);
2930 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2931 tstart
= add_emacs_time (tboot
, tstart
);
2932 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2933 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2934 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2935 telapsed
= sub_emacs_time (tnow
, tstart
);
2936 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2937 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2938 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2939 / EMACS_TIME_TO_DOUBLE (telapsed
));
2942 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2943 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2946 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2953 strcpy (procfn_end
, "/cmdline");
2954 fd
= emacs_open (fn
, O_RDONLY
, 0);
2958 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2960 if (emacs_read (fd
, &ch
, 1) != 1)
2963 if (c_isspace (c
) || c
== '\\')
2964 cmdline_size
++; /* for later quoting, see below */
2968 cmdline
= xmalloc (cmdline_size
+ 1);
2969 lseek (fd
, 0L, SEEK_SET
);
2971 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2972 cmdline
[nread
++] = '\0';
2975 /* Assigning zero to `nread' makes us skip the following
2976 two loops, assign zero to cmdline_size, and enter the
2977 following `if' clause that handles unknown command
2981 /* We don't want trailing null characters. */
2982 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2984 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2986 /* Escape-quote whitespace and backslashes. */
2987 if (c_isspace (*p
) || *p
== '\\')
2989 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2993 else if (*p
== '\0')
2996 cmdline_size
= nread
;
3000 cmdline_size
= cmdsize
+ 2;
3001 cmdline
= xmalloc (cmdline_size
+ 1);
3002 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
3005 /* Command line is encoded in locale-coding-system; decode it. */
3006 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
3007 decoded_cmd
= code_convert_string_norecord (cmd_str
,
3008 Vlocale_coding_system
, 0);
3010 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3017 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
3019 /* The <procfs.h> header does not like to be included if _LP64 is defined and
3020 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
3021 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
3022 #define PROCFS_FILE_OFFSET_BITS_HACK 1
3023 #undef _FILE_OFFSET_BITS
3025 #define PROCFS_FILE_OFFSET_BITS_HACK 0
3030 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
3031 #define _FILE_OFFSET_BITS 64
3032 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
3034 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
3037 system_process_attributes (Lisp_Object pid
)
3039 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
3044 struct psinfo pinfo
;
3050 Lisp_Object attrs
= Qnil
;
3051 Lisp_Object decoded_cmd
, tem
;
3052 struct gcpro gcpro1
, gcpro2
;
3054 CHECK_NUMBER_OR_FLOAT (pid
);
3055 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
3056 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
3057 if (stat (procfn
, &st
) < 0)
3060 GCPRO2 (attrs
, decoded_cmd
);
3064 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3066 pw
= getpwuid (uid
);
3069 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3072 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3074 gr
= getgrgid (gid
);
3077 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3079 strcpy (fn
, procfn
);
3080 procfn_end
= fn
+ strlen (fn
);
3081 strcpy (procfn_end
, "/psinfo");
3082 fd
= emacs_open (fn
, O_RDONLY
, 0);
3084 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3086 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3087 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3088 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3092 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3093 state_str
[1] = '\0';
3094 tem
= build_string (state_str
);
3095 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3098 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3099 need to get a string from it. */
3101 /* FIXME: missing: Qtpgid */
3113 Are they available? */
3115 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3116 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3117 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3118 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3119 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3121 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3122 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3123 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3125 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3126 range 0 .. 2**15, representing 0.0 .. 1.0. */
3127 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
3128 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
3131 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3132 strlen (pinfo
.pr_fname
)),
3133 Vlocale_coding_system
, 0);
3134 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3136 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3137 strlen (pinfo
.pr_psargs
)),
3138 Vlocale_coding_system
, 0);
3139 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3149 #elif defined __FreeBSD__
3152 timeval_to_EMACS_TIME (struct timeval t
)
3154 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3158 make_lisp_timeval (struct timeval t
)
3160 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3164 system_process_attributes (Lisp_Object pid
)
3167 int pagesize
= getpagesize ();
3174 char args
[MAXPATHLEN
];
3177 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3178 struct kinfo_proc proc
;
3179 size_t proclen
= sizeof proc
;
3181 struct gcpro gcpro1
, gcpro2
;
3182 Lisp_Object attrs
= Qnil
;
3183 Lisp_Object decoded_comm
;
3185 CHECK_NUMBER_OR_FLOAT (pid
);
3186 CONS_TO_INTEGER (pid
, int, proc_id
);
3189 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3192 GCPRO2 (attrs
, decoded_comm
);
3194 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3197 pw
= getpwuid (proc
.ki_uid
);
3200 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3202 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3205 gr
= getgrgid (proc
.ki_svgid
);
3208 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3210 decoded_comm
= code_convert_string_norecord
3211 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3212 Vlocale_coding_system
, 0);
3214 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3216 char state
[2] = {'\0', '\0'};
3217 switch (proc
.ki_stat
)
3239 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3242 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3243 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3244 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3247 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3250 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3252 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3253 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3254 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3255 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3256 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3258 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3260 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3262 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3263 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3264 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3266 attrs
= Fcons (Fcons (Qcutime
,
3267 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3269 attrs
= Fcons (Fcons (Qcstime
,
3270 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3272 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3273 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3274 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3276 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3278 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3279 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3280 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3281 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3282 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3285 now
= current_emacs_time ();
3286 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3287 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3289 len
= sizeof fscale
;
3290 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3295 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3297 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3298 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3299 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3303 len
= sizeof npages
;
3304 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3306 double pmem
= (proc
.ki_flag
& P_INMEM
3307 ? 100.0 * proc
.ki_rssize
/ npages
3309 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3312 mib
[2] = KERN_PROC_ARGS
;
3314 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3317 for (i
= 0; i
< len
; i
++)
3319 if (! args
[i
] && i
< len
- 1)
3324 (code_convert_string_norecord
3325 (build_unibyte_string (args
),
3326 Vlocale_coding_system
, 0));
3328 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3335 /* The WINDOWSNT implementation is in w32.c.
3336 The MSDOS implementation is in dosfns.c. */
3337 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3340 system_process_attributes (Lisp_Object pid
)
3345 #endif /* !defined (WINDOWSNT) */