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);
106 #include "syssignal.h"
109 static int emacs_get_tty (int, struct emacs_tty
*);
110 static int emacs_set_tty (int, struct emacs_tty
*, int);
112 /* ULLONG_MAX is missing on Red Hat Linux 7.3; see Bug#11781. */
114 #define ULLONG_MAX TYPE_MAXIMUM (unsigned long long int)
117 /* Declare here, including term.h is problematic on some systems. */
118 extern void tputs (const char *, int, int (*)(int));
120 static const int baud_convert
[] =
122 0, 50, 75, 110, 135, 150, 200, 300, 600, 1200,
123 1800, 2400, 4800, 9600, 19200, 38400
127 #if !defined (HAVE_GET_CURRENT_DIR_NAME) || defined (BROKEN_GET_CURRENT_DIR_NAME)
129 /* Return the current working directory. Returns NULL on errors.
130 Any other returned value must be freed with free. This is used
131 only when get_current_dir_name is not defined on the system. */
133 get_current_dir_name (void)
136 char *pwd
= getenv ("PWD");
137 struct stat dotstat
, pwdstat
;
138 /* If PWD is accurate, use it instead of calling getcwd. PWD is
139 sometimes a nicer name, and using it may avoid a fatal error if a
140 parent directory is searchable but not readable. */
142 && (IS_DIRECTORY_SEP (*pwd
) || (*pwd
&& IS_DEVICE_SEP (pwd
[1])))
143 && stat (pwd
, &pwdstat
) == 0
144 && stat (".", &dotstat
) == 0
145 && dotstat
.st_ino
== pwdstat
.st_ino
146 && dotstat
.st_dev
== pwdstat
.st_dev
148 && strlen (pwd
) < MAXPATHLEN
152 buf
= malloc (strlen (pwd
) + 1);
159 size_t buf_size
= 1024;
160 buf
= malloc (buf_size
);
165 if (getcwd (buf
, buf_size
) == buf
)
169 int tmp_errno
= errno
;
175 buf
= realloc (buf
, buf_size
);
185 /* Discard pending input on all input descriptors. */
188 discard_tty_input (void)
191 struct emacs_tty buf
;
196 #ifdef MSDOS /* Demacs 1.1.1 91/10/16 HIRANO Satoshi */
197 while (dos_keyread () != -1)
199 #else /* not MSDOS */
201 struct tty_display_info
*tty
;
202 for (tty
= tty_list
; tty
; tty
= tty
->next
)
204 if (tty
->input
) /* Is the device suspended? */
206 emacs_get_tty (fileno (tty
->input
), &buf
);
207 emacs_set_tty (fileno (tty
->input
), &buf
, 0);
211 #endif /* not MSDOS */
212 #endif /* not WINDOWSNT */
218 /* Arrange for character C to be read as the next input from
220 XXX What if we have multiple ttys?
226 if (! FRAME_TERMCAP_P (SELECTED_FRAME ()))
229 /* Should perhaps error if in batch mode */
231 ioctl (fileno (CURTTY()->input
), TIOCSTI
, &c
);
232 #else /* no TIOCSTI */
233 error ("Cannot stuff terminal input characters in this version of Unix");
234 #endif /* no TIOCSTI */
240 init_baud_rate (int fd
)
250 #else /* not DOS_NT */
255 emacs_ospeed
= cfgetospeed (&sg
);
256 #endif /* not DOS_NT */
259 baud_rate
= (emacs_ospeed
< sizeof baud_convert
/ sizeof baud_convert
[0]
260 ? baud_convert
[emacs_ospeed
] : 9600);
270 wait_for_termination_1 (pid_t pid
, int interruptible
)
275 int wait_result
= waitpid (pid
, &status
, 0);
283 record_child_status_change (wait_result
, status
);
287 /* Note: the MS-Windows emulation of waitpid calls QUIT
294 /* Wait for subprocess with process id `pid' to terminate and
295 make sure it will get eliminated (not remain forever as a zombie) */
298 wait_for_termination (pid_t pid
)
300 wait_for_termination_1 (pid
, 0);
303 /* Like the above, but allow keyboard interruption. */
305 interruptible_wait_for_termination (pid_t pid
)
307 wait_for_termination_1 (pid
, 1);
311 * flush any pending output
312 * (may flush input as well; it does not matter the way we use it)
316 flush_pending_output (int channel
)
318 /* FIXME: maybe this function should be removed */
321 /* Set up the terminal at the other end of a pseudo-terminal that
322 we will be controlling an inferior through.
323 It should not echo or do line-editing, since that is done
324 in Emacs. No padding needed for insertion into an Emacs buffer. */
327 child_setup_tty (int out
)
332 emacs_get_tty (out
, &s
);
333 s
.main
.c_oflag
|= OPOST
; /* Enable output postprocessing */
334 s
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL on output */
336 /* http://lists.gnu.org/archive/html/emacs-devel/2008-05/msg00406.html
337 Some versions of GNU Hurd do not have FFDLY? */
339 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
|FFDLY
);
340 /* No output delays */
342 s
.main
.c_oflag
&= ~(NLDLY
|CRDLY
|TABDLY
|BSDLY
|VTDLY
);
343 /* No output delays */
346 s
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
347 s
.main
.c_lflag
|= ISIG
; /* Enable signals */
349 s
.main
.c_iflag
&= ~IUCLC
; /* Disable downcasing on input. */
352 s
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
355 s
.main
.c_oflag
&= ~OLCUC
; /* Disable upcasing on output. */
357 s
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
358 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CSIZE
) | CS8
; /* Don't strip 8th bit */
359 s
.main
.c_cc
[VERASE
] = CDISABLE
; /* disable erase processing */
360 s
.main
.c_cc
[VKILL
] = CDISABLE
; /* disable kill processing */
363 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
366 #ifdef SIGNALS_VIA_CHARACTERS
367 /* the QUIT and INTR character are used in process_send_signal
368 so set them here to something useful. */
369 if (s
.main
.c_cc
[VQUIT
] == CDISABLE
)
370 s
.main
.c_cc
[VQUIT
] = '\\'&037; /* Control-\ */
371 if (s
.main
.c_cc
[VINTR
] == CDISABLE
)
372 s
.main
.c_cc
[VINTR
] = 'C'&037; /* Control-C */
373 #endif /* not SIGNALS_VIA_CHARACTERS */
376 /* Also, PTY overloads NUL and BREAK.
377 don't ignore break, but don't signal either, so it looks like NUL. */
378 s
.main
.c_iflag
&= ~IGNBRK
;
379 s
.main
.c_iflag
&= ~BRKINT
;
380 /* rms: Formerly it set s.main.c_cc[VINTR] to 0377 here
381 unconditionally. Then a SIGNALS_VIA_CHARACTERS conditional
382 would force it to 0377. That looks like duplicated code. */
383 s
.main
.c_cflag
= (s
.main
.c_cflag
& ~CBAUD
) | B9600
; /* baud rate sanity */
386 /* We originally enabled ICANON (and set VEOF to 04), and then had
387 process.c send additional EOF chars to flush the output when faced
388 with long lines, but this leads to weird effects when the
389 subprocess has disabled ICANON and ends up seeing those spurious
390 extra EOFs. So we don't send EOFs any more in
391 process.c:send_process. First we tried to disable ICANON by
392 default, so if a subsprocess sets up ICANON, it's his problem (or
393 the Elisp package that talks to it) to deal with lines that are
394 too long. But this disables some features, such as the ability
395 to send EOF signals. So we re-enabled ICANON but there is no
396 more "send eof to flush" going on (which is wrong and unportable
397 in itself). The correct way to handle too much output is to
398 buffer what could not be written and then write it again when
399 select returns ok for writing. This has it own set of
400 problems. Write is now asynchronous, is that a problem? How much
401 do we buffer, and what do we do when that limit is reached? */
403 s
.main
.c_lflag
|= ICANON
; /* Enable line editing and eof processing */
404 s
.main
.c_cc
[VEOF
] = 'D'&037; /* Control-D */
405 #if 0 /* These settings only apply to non-ICANON mode. */
406 s
.main
.c_cc
[VMIN
] = 1;
407 s
.main
.c_cc
[VTIME
] = 0;
410 emacs_set_tty (out
, &s
, 0);
411 #endif /* not WINDOWSNT */
413 #endif /* not MSDOS */
416 /* Record a signal code and the action for it. */
420 struct sigaction action
;
423 static void save_signal_handlers (struct save_signal
*);
424 static void restore_signal_handlers (struct save_signal
*);
426 /* Suspend the Emacs process; give terminal to its superior. */
431 #if defined (SIGTSTP) && !defined (MSDOS)
434 pid_t pgrp
= getpgrp ();
435 EMACS_KILLPG (pgrp
, SIGTSTP
);
438 #else /* No SIGTSTP */
439 /* On a system where suspending is not implemented,
440 instead fork a subshell and let it talk directly to the terminal
444 #endif /* no SIGTSTP */
447 /* Fork a subshell. */
452 #ifdef DOS_NT /* Demacs 1.1.2 91/10/20 Manabu Higashida */
454 char oldwd
[MAXPATHLEN
+1]; /* Fixed length is safe on MSDOS. */
457 struct save_signal saved_handlers
[5];
459 unsigned char *volatile str_volatile
= 0;
463 saved_handlers
[0].code
= SIGINT
;
464 saved_handlers
[1].code
= SIGQUIT
;
465 saved_handlers
[2].code
= SIGTERM
;
467 saved_handlers
[3].code
= SIGIO
;
468 saved_handlers
[4].code
= 0;
470 saved_handlers
[3].code
= 0;
473 /* Mentioning current_buffer->buffer would mean including buffer.h,
474 which somehow wedges the hp compiler. So instead... */
476 dir
= intern ("default-directory");
477 if (NILP (Fboundp (dir
)))
479 dir
= Fsymbol_value (dir
);
483 dir
= expand_and_dir_to_file (Funhandled_file_name_directory (dir
), Qnil
);
484 str_volatile
= str
= alloca (SCHARS (dir
) + 2);
486 memcpy (str
, SDATA (dir
), len
);
487 if (str
[len
- 1] != '/') str
[len
++] = '/';
493 save_signal_handlers (saved_handlers
);
494 synch_process_alive
= 1;
498 error ("Can't spawn subshell");
505 #ifdef DOS_NT /* MW, Aug 1993 */
506 getcwd (oldwd
, sizeof oldwd
);
508 sh
= (char *) egetenv ("SUSPEND"); /* KFS, 1994-12-14 */
511 sh
= (char *) egetenv ("SHELL");
515 /* Use our buffer's default directory for the subshell. */
517 if (str
&& chdir ((char *) str
) != 0)
520 ignore_value (write (1, "Can't chdir\n", 12));
525 close_process_descs (); /* Close Emacs's pipes/ptys */
527 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
529 char *epwd
= getenv ("PWD");
530 char old_pwd
[MAXPATHLEN
+1+4];
532 /* If PWD is set, pass it with corrected value. */
535 strcpy (old_pwd
, epwd
);
536 if (str
[len
- 1] == '/')
538 setenv ("PWD", str
, 1);
541 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
543 putenv (old_pwd
); /* restore previous value */
545 #else /* not MSDOS */
547 /* Waits for process completion */
548 pid
= _spawnlp (_P_WAIT
, sh
, sh
, NULL
);
549 chdir (oldwd
); /* FIXME: Do the right thing on chdir failure. */
551 write (1, "Can't execute subshell", 22);
552 #else /* not WINDOWSNT */
553 execlp (sh
, sh
, (char *) 0);
554 ignore_value (write (1, "Can't execute subshell", 22));
556 #endif /* not WINDOWSNT */
557 #endif /* not MSDOS */
560 /* Do this now if we did not do it before. */
562 save_signal_handlers (saved_handlers
);
563 synch_process_alive
= 1;
567 wait_for_termination (pid
);
569 restore_signal_handlers (saved_handlers
);
570 synch_process_alive
= 0;
574 save_signal_handlers (struct save_signal
*saved_handlers
)
576 while (saved_handlers
->code
)
578 struct sigaction action
;
579 emacs_sigaction_init (&action
, SIG_IGN
);
580 sigaction (saved_handlers
->code
, &action
, &saved_handlers
->action
);
586 restore_signal_handlers (struct save_signal
*saved_handlers
)
588 while (saved_handlers
->code
)
590 sigaction (saved_handlers
->code
, &saved_handlers
->action
, 0);
596 static int old_fcntl_flags
[MAXDESC
];
603 old_fcntl_flags
[fd
] = fcntl (fd
, F_GETFL
, 0) & ~FASYNC
;
604 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
] | FASYNC
);
605 interrupts_deferred
= 0;
613 fcntl (fd
, F_SETFL
, old_fcntl_flags
[fd
]);
626 sigemptyset (&unblocked
);
628 sigaddset (&unblocked
, SIGWINCH
);
630 sigaddset (&unblocked
, SIGIO
);
631 pthread_sigmask (SIG_UNBLOCK
, &unblocked
, 0);
633 interrupts_deferred
= 0;
638 unrequest_sigio (void)
646 sigemptyset (&blocked
);
648 sigaddset (&blocked
, SIGWINCH
);
650 sigaddset (&blocked
, SIGIO
);
651 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
652 interrupts_deferred
= 1;
660 signal (SIGIO
, SIG_IGN
);
665 /* Saving and restoring the process group of Emacs's terminal. */
667 /* The process group of which Emacs was a member when it initially
670 If Emacs was in its own process group (i.e. inherited_pgroup ==
671 getpid ()), then we know we're running under a shell with job
672 control (Emacs would never be run as part of a pipeline).
675 If Emacs was not in its own process group, then we know we're
676 running under a shell (or a caller) that doesn't know how to
677 separate itself from Emacs (like sh). Emacs must be in its own
678 process group in order to receive SIGIO correctly. In this
679 situation, we put ourselves in our own pgroup, forcibly set the
680 tty's pgroup to our pgroup, and make sure to restore and reinstate
681 the tty's pgroup just like any other terminal setting. If
682 inherited_group was not the tty's pgroup, then we'll get a
683 SIGTTmumble when we try to change the tty's pgroup, and a CONT if
684 it goes foreground in the future, which is what should happen. */
686 static pid_t inherited_pgroup
;
689 init_foreground_group (void)
691 pid_t pgrp
= getpgrp ();
692 inherited_pgroup
= getpid () == pgrp
? 0 : pgrp
;
695 /* Safely set a controlling terminal FD's process group to PGID.
696 If we are not in the foreground already, POSIX requires tcsetpgrp
697 to deliver a SIGTTOU signal, which would stop us. This is an
698 annoyance, so temporarily ignore the signal.
700 In practice, platforms lacking SIGTTOU also lack tcsetpgrp, so
701 skip all this unless SIGTTOU is defined. */
703 tcsetpgrp_without_stopping (int fd
, pid_t pgid
)
706 signal_handler_t handler
;
708 handler
= signal (SIGTTOU
, SIG_IGN
);
709 tcsetpgrp (fd
, pgid
);
710 signal (SIGTTOU
, handler
);
715 /* Split off the foreground process group to Emacs alone. When we are
716 in the foreground, but not started in our own process group,
717 redirect the tty device handle FD to point to our own process
718 group. FD must be the file descriptor of the controlling tty. */
720 narrow_foreground_group (int fd
)
722 if (inherited_pgroup
&& setpgid (0, 0) == 0)
723 tcsetpgrp_without_stopping (fd
, getpid ());
726 /* Set the tty to our original foreground group. */
728 widen_foreground_group (int fd
)
730 if (inherited_pgroup
&& setpgid (0, inherited_pgroup
) == 0)
731 tcsetpgrp_without_stopping (fd
, inherited_pgroup
);
734 /* Getting and setting emacs_tty structures. */
736 /* Set *TC to the parameters associated with the terminal FD.
737 Return zero if all's well, or -1 if we ran into an error we
738 couldn't deal with. */
740 emacs_get_tty (int fd
, struct emacs_tty
*settings
)
742 /* Retrieve the primary parameters - baud rate, character size, etcetera. */
744 /* We have those nifty POSIX tcmumbleattr functions. */
745 memset (&settings
->main
, 0, sizeof (settings
->main
));
746 if (tcgetattr (fd
, &settings
->main
) < 0)
750 /* We have survived the tempest. */
755 /* Set the parameters of the tty on FD according to the contents of
756 *SETTINGS. If FLUSHP is non-zero, we discard input.
757 Return 0 if all went well, and -1 if anything failed. */
760 emacs_set_tty (int fd
, struct emacs_tty
*settings
, int flushp
)
762 /* Set the primary parameters - baud rate, character size, etcetera. */
765 /* We have those nifty POSIX tcmumbleattr functions.
766 William J. Smith <wjs@wiis.wang.com> writes:
767 "POSIX 1003.1 defines tcsetattr to return success if it was
768 able to perform any of the requested actions, even if some
769 of the requested actions could not be performed.
770 We must read settings back to ensure tty setup properly.
771 AIX requires this to keep tty from hanging occasionally." */
772 /* This make sure that we don't loop indefinitely in here. */
773 for (i
= 0 ; i
< 10 ; i
++)
774 if (tcsetattr (fd
, flushp
? TCSAFLUSH
: TCSADRAIN
, &settings
->main
) < 0)
785 memset (&new, 0, sizeof (new));
786 /* Get the current settings, and see if they're what we asked for. */
787 tcgetattr (fd
, &new);
788 /* We cannot use memcmp on the whole structure here because under
789 * aix386 the termios structure has some reserved field that may
792 if ( new.c_iflag
== settings
->main
.c_iflag
793 && new.c_oflag
== settings
->main
.c_oflag
794 && new.c_cflag
== settings
->main
.c_cflag
795 && new.c_lflag
== settings
->main
.c_lflag
796 && memcmp (new.c_cc
, settings
->main
.c_cc
, NCCS
) == 0)
803 /* We have survived the tempest. */
810 static int old_fcntl_owner
[MAXDESC
];
811 #endif /* F_SETOWN */
813 /* This may also be defined in stdio,
814 but if so, this does no harm,
815 and using the same name avoids wasting the other one's space. */
818 unsigned char _sobuf
[BUFSIZ
+8];
823 /* Initialize the terminal mode on all tty devices that are currently
827 init_all_sys_modes (void)
829 struct tty_display_info
*tty
;
830 for (tty
= tty_list
; tty
; tty
= tty
->next
)
831 init_sys_modes (tty
);
834 /* Initialize the terminal mode on the given tty device. */
837 init_sys_modes (struct tty_display_info
*tty_out
)
839 struct emacs_tty tty
;
840 Lisp_Object terminal
;
842 Vtty_erase_char
= Qnil
;
847 if (!tty_out
->output
)
848 return; /* The tty is suspended. */
850 narrow_foreground_group (fileno (tty_out
->input
));
852 if (! tty_out
->old_tty
)
853 tty_out
->old_tty
= xmalloc (sizeof *tty_out
->old_tty
);
855 emacs_get_tty (fileno (tty_out
->input
), tty_out
->old_tty
);
857 tty
= *tty_out
->old_tty
;
859 #if !defined (DOS_NT)
860 XSETINT (Vtty_erase_char
, tty
.main
.c_cc
[VERASE
]);
862 tty
.main
.c_iflag
|= (IGNBRK
); /* Ignore break condition */
863 tty
.main
.c_iflag
&= ~ICRNL
; /* Disable map of CR to NL on input */
864 #ifdef INLCR /* I'm just being cautious,
865 since I can't check how widespread INLCR is--rms. */
866 tty
.main
.c_iflag
&= ~INLCR
; /* Disable map of NL to CR on input */
869 tty
.main
.c_iflag
&= ~ISTRIP
; /* don't strip 8th bit on input */
871 tty
.main
.c_lflag
&= ~ECHO
; /* Disable echo */
872 tty
.main
.c_lflag
&= ~ICANON
; /* Disable erase/kill processing */
874 tty
.main
.c_lflag
&= ~IEXTEN
; /* Disable other editing characters. */
876 tty
.main
.c_lflag
|= ISIG
; /* Enable signals */
877 if (tty_out
->flow_control
)
879 tty
.main
.c_iflag
|= IXON
; /* Enable start/stop output control */
881 tty
.main
.c_iflag
&= ~IXANY
;
885 tty
.main
.c_iflag
&= ~IXON
; /* Disable start/stop output control */
886 tty
.main
.c_oflag
&= ~ONLCR
; /* Disable map of NL to CR-NL
888 tty
.main
.c_oflag
&= ~TAB3
; /* Disable tab expansion */
890 if (tty_out
->meta_key
)
892 tty
.main
.c_cflag
|= CS8
; /* allow 8th bit on input */
893 tty
.main
.c_cflag
&= ~PARENB
;/* Don't check parity */
897 XSETTERMINAL(terminal
, tty_out
->terminal
);
898 if (!NILP (Fcontrolling_tty_p (terminal
)))
900 tty
.main
.c_cc
[VINTR
] = quit_char
; /* C-g (usually) gives SIGINT */
901 /* Set up C-g for both SIGQUIT and SIGINT.
902 We don't know which we will get, but we handle both alike
903 so which one it really gives us does not matter. */
904 tty
.main
.c_cc
[VQUIT
] = quit_char
;
908 /* We normally don't get interrupt or quit signals from tty
909 devices other than our controlling terminal; therefore,
910 we must handle C-g as normal input. Unfortunately, this
911 means that the interrupt and quit feature must be
912 disabled on secondary ttys, or we would not even see the
915 Note that even though emacsclient could have special code
916 to pass SIGINT to Emacs, we should _not_ enable
917 interrupt/quit keys for emacsclient frames. This means
918 that we can't break out of loops in C code from a
919 secondary tty frame, but we can always decide what
920 display the C-g came from, which is more important from a
921 usability point of view. (Consider the case when two
922 people work together using the same Emacs instance.) */
923 tty
.main
.c_cc
[VINTR
] = CDISABLE
;
924 tty
.main
.c_cc
[VQUIT
] = CDISABLE
;
926 tty
.main
.c_cc
[VMIN
] = 1; /* Input should wait for at least 1 char */
927 tty
.main
.c_cc
[VTIME
] = 0; /* no matter how long that takes. */
929 tty
.main
.c_cc
[VSWTCH
] = CDISABLE
; /* Turn off shell layering use
934 tty
.main
.c_cc
[VSUSP
] = CDISABLE
; /* Turn off handling of C-z. */
937 tty
.main
.c_cc
[V_DSUSP
] = CDISABLE
; /* Turn off handling of C-y. */
939 #ifdef VDSUSP /* Some systems have VDSUSP, some have V_DSUSP. */
940 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
943 tty
.main
.c_cc
[VLNEXT
] = CDISABLE
;
946 tty
.main
.c_cc
[VREPRINT
] = CDISABLE
;
947 #endif /* VREPRINT */
949 tty
.main
.c_cc
[VWERASE
] = CDISABLE
;
952 tty
.main
.c_cc
[VDISCARD
] = CDISABLE
;
953 #endif /* VDISCARD */
955 if (tty_out
->flow_control
)
958 tty
.main
.c_cc
[VSTART
] = '\021';
961 tty
.main
.c_cc
[VSTOP
] = '\023';
967 tty
.main
.c_cc
[VSTART
] = CDISABLE
;
970 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
975 tty
.main
.c_cc
[VSTRT
] = CDISABLE
;
976 tty
.main
.c_cc
[VSTOP
] = CDISABLE
;
977 tty
.main
.c_cc
[VSUSP
] = CDISABLE
;
978 tty
.main
.c_cc
[VDSUSP
] = CDISABLE
;
979 if (tty_out
->flow_control
)
982 tty
.main
.c_cc
[VSTART
] = '\021';
985 tty
.main
.c_cc
[VSTOP
] = '\023';
988 /* Also, PTY overloads NUL and BREAK.
989 don't ignore break, but don't signal either, so it looks like NUL.
990 This really serves a purpose only if running in an XTERM window
991 or via TELNET or the like, but does no harm elsewhere. */
992 tty
.main
.c_iflag
&= ~IGNBRK
;
993 tty
.main
.c_iflag
&= ~BRKINT
;
995 #endif /* not DOS_NT */
997 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida, MW Aug 1993 */
998 if (!tty_out
->term_initted
)
999 internal_terminal_init ();
1000 dos_ttraw (tty_out
);
1003 emacs_set_tty (fileno (tty_out
->input
), &tty
, 0);
1005 /* This code added to insure that, if flow-control is not to be used,
1006 we have an unlocked terminal at the start. */
1009 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TCXONC
, 1);
1012 if (!tty_out
->flow_control
) ioctl (fileno (tty_out
->input
), TIOCSTART
, 0);
1015 #if !defined (DOS_NT)
1017 if (!tty_out
->flow_control
) tcflow (fileno (tty_out
->input
), TCOON
);
1022 if (interrupt_input
)
1024 old_fcntl_owner
[fileno (tty_out
->input
)] =
1025 fcntl (fileno (tty_out
->input
), F_GETOWN
, 0);
1026 fcntl (fileno (tty_out
->input
), F_SETOWN
, getpid ());
1027 init_sigio (fileno (tty_out
->input
));
1029 if (gpm_tty
== tty_out
)
1031 /* Arrange for mouse events to give us SIGIO signals. */
1032 fcntl (gpm_fd
, F_SETOWN
, getpid ());
1033 fcntl (gpm_fd
, F_SETFL
, fcntl (gpm_fd
, F_GETFL
, 0) | O_NONBLOCK
);
1034 init_sigio (gpm_fd
);
1036 #endif /* HAVE_GPM */
1038 #endif /* F_GETOWN */
1041 /* This symbol is defined on recent USG systems.
1042 Someone says without this call USG won't really buffer the file
1043 even with a call to setbuf. */
1044 setvbuf (tty_out
->output
, (char *) _sobuf
, _IOFBF
, sizeof _sobuf
);
1046 setbuf (tty_out
->output
, (char *) _sobuf
);
1049 if (tty_out
->terminal
->set_terminal_modes_hook
)
1050 tty_out
->terminal
->set_terminal_modes_hook (tty_out
->terminal
);
1052 if (!tty_out
->term_initted
)
1054 Lisp_Object tail
, frame
;
1055 FOR_EACH_FRAME (tail
, frame
)
1057 /* XXX This needs to be revised. */
1058 if (FRAME_TERMCAP_P (XFRAME (frame
))
1059 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1060 init_frame_faces (XFRAME (frame
));
1064 if (tty_out
->term_initted
&& no_redraw_on_reenter
)
1066 /* We used to call "direct_output_forward_char(0)" here,
1067 but it's not clear why, since it may not do anything anyway. */
1071 Lisp_Object tail
, frame
;
1073 FOR_EACH_FRAME (tail
, frame
)
1075 if ((FRAME_TERMCAP_P (XFRAME (frame
))
1076 || FRAME_MSDOS_P (XFRAME (frame
)))
1077 && FRAME_TTY (XFRAME (frame
)) == tty_out
)
1078 FRAME_GARBAGED_P (XFRAME (frame
)) = 1;
1082 tty_out
->term_initted
= 1;
1085 /* Return nonzero if safe to use tabs in output.
1086 At the time this is called, init_sys_modes has not been done yet. */
1089 tabs_safe_p (int fd
)
1091 struct emacs_tty etty
;
1093 emacs_get_tty (fd
, &etty
);
1096 return ((etty
.main
.c_oflag
& TABDLY
) != TAB3
);
1097 #else /* not TABDLY */
1099 #endif /* not TABDLY */
1105 /* Get terminal size from system.
1106 Store number of lines into *HEIGHTP and width into *WIDTHP.
1107 We store 0 if there's no valid information. */
1110 get_tty_size (int fd
, int *widthp
, int *heightp
)
1112 #if defined TIOCGWINSZ
1115 struct winsize size
;
1117 if (ioctl (fd
, TIOCGWINSZ
, &size
) == -1)
1118 *widthp
= *heightp
= 0;
1121 *widthp
= size
.ws_col
;
1122 *heightp
= size
.ws_row
;
1125 #elif defined TIOCGSIZE
1127 /* SunOS - style. */
1128 struct ttysize size
;
1130 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1131 *widthp
= *heightp
= 0;
1134 *widthp
= size
.ts_cols
;
1135 *heightp
= size
.ts_lines
;
1138 #elif defined WINDOWSNT
1140 CONSOLE_SCREEN_BUFFER_INFO info
;
1141 if (GetConsoleScreenBufferInfo (GetStdHandle (STD_OUTPUT_HANDLE
), &info
))
1143 *widthp
= info
.srWindow
.Right
- info
.srWindow
.Left
+ 1;
1144 *heightp
= info
.srWindow
.Bottom
- info
.srWindow
.Top
+ 1;
1147 *widthp
= *heightp
= 0;
1151 *widthp
= ScreenCols ();
1152 *heightp
= ScreenRows ();
1154 #else /* system doesn't know size */
1162 /* Set the logical window size associated with descriptor FD
1163 to HEIGHT and WIDTH. This is used mainly with ptys. */
1166 set_window_size (int fd
, int height
, int width
)
1171 struct winsize size
;
1172 size
.ws_row
= height
;
1173 size
.ws_col
= width
;
1175 if (ioctl (fd
, TIOCSWINSZ
, &size
) == -1)
1176 return 0; /* error */
1183 /* SunOS - style. */
1184 struct ttysize size
;
1185 size
.ts_lines
= height
;
1186 size
.ts_cols
= width
;
1188 if (ioctl (fd
, TIOCGSIZE
, &size
) == -1)
1194 #endif /* not SunOS-style */
1195 #endif /* not BSD-style */
1200 /* Prepare all terminal devices for exiting Emacs. */
1203 reset_all_sys_modes (void)
1205 struct tty_display_info
*tty
;
1206 for (tty
= tty_list
; tty
; tty
= tty
->next
)
1207 reset_sys_modes (tty
);
1210 /* Prepare the terminal for closing it; move the cursor to the
1211 bottom of the frame, turn off interrupt-driven I/O, etc. */
1214 reset_sys_modes (struct tty_display_info
*tty_out
)
1221 if (!tty_out
->term_initted
)
1224 if (!tty_out
->output
)
1225 return; /* The tty is suspended. */
1227 /* Go to and clear the last line of the terminal. */
1229 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1231 /* Code adapted from tty_clear_end_of_line. */
1232 if (tty_out
->TS_clr_line
)
1234 emacs_tputs (tty_out
, tty_out
->TS_clr_line
, 1, cmputc
);
1237 { /* have to do it the hard way */
1239 tty_turn_off_insert (tty_out
);
1241 for (i
= curX (tty_out
); i
< FrameCols (tty_out
) - 1; i
++)
1243 fputc (' ', tty_out
->output
);
1247 cmgoto (tty_out
, FrameRows (tty_out
) - 1, 0);
1248 fflush (tty_out
->output
);
1250 if (tty_out
->terminal
->reset_terminal_modes_hook
)
1251 tty_out
->terminal
->reset_terminal_modes_hook (tty_out
->terminal
);
1254 /* Avoid possible loss of output when changing terminal modes. */
1255 fsync (fileno (tty_out
->output
));
1260 if (interrupt_input
)
1262 reset_sigio (fileno (tty_out
->input
));
1263 fcntl (fileno (tty_out
->input
), F_SETOWN
,
1264 old_fcntl_owner
[fileno (tty_out
->input
)]);
1266 #endif /* F_SETOWN */
1267 fcntl (fileno (tty_out
->input
), F_SETFL
,
1268 fcntl (fileno (tty_out
->input
), F_GETFL
, 0) & ~O_NONBLOCK
);
1271 if (tty_out
->old_tty
)
1272 while (emacs_set_tty (fileno (tty_out
->input
),
1273 tty_out
->old_tty
, 0) < 0 && errno
== EINTR
)
1276 #ifdef MSDOS /* Demacs 1.1.2 91/10/20 Manabu Higashida */
1280 widen_foreground_group (fileno (tty_out
->input
));
1285 /* Set up the proper status flags for use of a pty. */
1290 /* I'm told that TOICREMOTE does not mean control chars
1291 "can't be sent" but rather that they don't have
1292 input-editing or signaling effects.
1293 That should be good, because we have other ways
1294 to do those things in Emacs.
1295 However, telnet mode seems not to work on 4.2.
1296 So TIOCREMOTE is turned off now. */
1298 /* Under hp-ux, if TIOCREMOTE is turned on, some calls
1299 will hang. In particular, the "timeout" feature (which
1300 causes a read to return if there is no data available)
1301 does this. Also it is known that telnet mode will hang
1302 in such a way that Emacs must be stopped (perhaps this
1303 is the same problem).
1305 If TIOCREMOTE is turned off, then there is a bug in
1306 hp-ux which sometimes loses data. Apparently the
1307 code which blocks the master process when the internal
1308 buffer fills up does not work. Other than this,
1309 though, everything else seems to work fine.
1311 Since the latter lossage is more benign, we may as well
1312 lose that way. -- cph */
1314 #if defined (UNIX98_PTYS)
1317 ioctl (fd
, FIONBIO
, &on
);
1322 #endif /* HAVE_PTYS */
1325 #include <sys/socket.h>
1327 #endif /* HAVE_SOCKETS */
1330 #ifndef HAVE_H_ERRNO
1333 #endif /* TRY_AGAIN */
1336 init_system_name (void)
1338 #ifndef HAVE_GETHOSTNAME
1341 Vsystem_name
= build_string (uts
.nodename
);
1342 #else /* HAVE_GETHOSTNAME */
1343 unsigned int hostname_size
= 256;
1344 char *hostname
= alloca (hostname_size
);
1346 /* Try to get the host name; if the buffer is too short, try
1347 again. Apparently, the only indication gethostname gives of
1348 whether the buffer was large enough is the presence or absence
1349 of a '\0' in the string. Eech. */
1352 gethostname (hostname
, hostname_size
- 1);
1353 hostname
[hostname_size
- 1] = '\0';
1355 /* Was the buffer large enough for the '\0'? */
1356 if (strlen (hostname
) < hostname_size
- 1)
1359 hostname_size
<<= 1;
1360 hostname
= alloca (hostname_size
);
1363 /* Turn the hostname into the official, fully-qualified hostname.
1364 Don't do this if we're going to dump; this can confuse system
1365 libraries on some machines and make the dumped emacs core dump. */
1368 #endif /* not CANNOT_DUMP */
1369 if (! strchr (hostname
, '.'))
1372 #ifdef HAVE_GETADDRINFO
1373 struct addrinfo
*res
;
1374 struct addrinfo hints
;
1377 memset (&hints
, 0, sizeof (hints
));
1378 hints
.ai_socktype
= SOCK_STREAM
;
1379 hints
.ai_flags
= AI_CANONNAME
;
1381 for (count
= 0;; count
++)
1383 if ((ret
= getaddrinfo (hostname
, NULL
, &hints
, &res
)) == 0
1384 || ret
!= EAI_AGAIN
)
1389 Fsleep_for (make_number (1), Qnil
);
1394 struct addrinfo
*it
= res
;
1397 char *fqdn
= it
->ai_canonname
;
1398 if (fqdn
&& strchr (fqdn
, '.')
1399 && strcmp (fqdn
, "localhost.localdomain") != 0)
1405 hostname
= alloca (strlen (it
->ai_canonname
) + 1);
1406 strcpy (hostname
, it
->ai_canonname
);
1410 #else /* !HAVE_GETADDRINFO */
1412 for (count
= 0;; count
++)
1418 hp
= gethostbyname (hostname
);
1420 if (! (hp
== 0 && h_errno
== TRY_AGAIN
))
1427 Fsleep_for (make_number (1), Qnil
);
1432 char *fqdn
= (char *) hp
->h_name
;
1434 if (!strchr (fqdn
, '.'))
1436 /* We still don't have a fully qualified domain name.
1437 Try to find one in the list of alternate names */
1438 char **alias
= hp
->h_aliases
;
1440 && (!strchr (*alias
, '.')
1441 || !strcmp (*alias
, "localhost.localdomain")))
1448 #endif /* !HAVE_GETADDRINFO */
1450 #endif /* HAVE_SOCKETS */
1451 Vsystem_name
= build_string (hostname
);
1452 #endif /* HAVE_GETHOSTNAME */
1455 for (p
= SDATA (Vsystem_name
); *p
; p
++)
1456 if (*p
== ' ' || *p
== '\t')
1461 sigset_t empty_mask
;
1463 static struct sigaction process_fatal_action
;
1466 emacs_sigaction_flags (void)
1469 /* SA_RESTART causes interruptible functions with timeouts (e.g.,
1470 'select') to reset their timeout on some platforms (e.g.,
1471 HP-UX 11), which is not what we want. Also, when Emacs is
1472 interactive, we don't want SA_RESTART because we need to poll
1473 for pending input so we need long-running syscalls to be interrupted
1474 after a signal that sets pending_signals.
1476 Non-interactive keyboard input goes through stdio, where we
1477 always want restartable system calls. */
1484 /* Store into *ACTION a signal action suitable for Emacs, with handler
1487 emacs_sigaction_init (struct sigaction
*action
, signal_handler_t handler
)
1489 sigemptyset (&action
->sa_mask
);
1491 /* When handling a signal, block nonfatal system signals that are caught
1492 by Emacs. This makes race conditions less likely. */
1493 sigaddset (&action
->sa_mask
, SIGALRM
);
1495 sigaddset (&action
->sa_mask
, SIGCHLD
);
1498 sigaddset (&action
->sa_mask
, SIGDANGER
);
1500 #ifdef PROFILER_CPU_SUPPORT
1501 sigaddset (&action
->sa_mask
, SIGPROF
);
1504 sigaddset (&action
->sa_mask
, SIGWINCH
);
1506 if (! noninteractive
)
1508 sigaddset (&action
->sa_mask
, SIGINT
);
1509 sigaddset (&action
->sa_mask
, SIGQUIT
);
1511 sigaddset (&action
->sa_mask
, SIGIO
);
1515 if (! IEEE_FLOATING_POINT
)
1516 sigaddset (&action
->sa_mask
, SIGFPE
);
1518 action
->sa_handler
= handler
;
1519 action
->sa_flags
= emacs_sigaction_flags ();
1522 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1523 static pthread_t main_thread
;
1526 /* SIG has arrived at the current process. Deliver it to the main
1527 thread, which should handle it with HANDLER.
1529 If we are on the main thread, handle the signal SIG with HANDLER.
1530 Otherwise, redirect the signal to the main thread, blocking it from
1531 this thread. POSIX says any thread can receive a signal that is
1532 associated with a process, process group, or asynchronous event.
1533 On GNU/Linux that is not true, but for other systems (FreeBSD at
1536 deliver_process_signal (int sig
, signal_handler_t handler
)
1538 /* Preserve errno, to avoid race conditions with signal handlers that
1539 might change errno. Races can occur even in single-threaded hosts. */
1540 int old_errno
= errno
;
1542 bool on_main_thread
= true;
1543 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1544 if (! pthread_equal (pthread_self (), main_thread
))
1547 sigemptyset (&blocked
);
1548 sigaddset (&blocked
, sig
);
1549 pthread_sigmask (SIG_BLOCK
, &blocked
, 0);
1550 pthread_kill (main_thread
, sig
);
1551 on_main_thread
= false;
1560 /* Static location to save a fatal backtrace in a thread.
1561 FIXME: If two subsidiary threads fail simultaneously, the resulting
1562 backtrace may be garbage. */
1563 enum { BACKTRACE_LIMIT_MAX
= 500 };
1564 static void *thread_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
1565 static int thread_backtrace_npointers
;
1567 /* SIG has arrived at the current thread.
1568 If we are on the main thread, handle the signal SIG with HANDLER.
1569 Otherwise, this is a fatal error in the handling thread. */
1571 deliver_thread_signal (int sig
, signal_handler_t handler
)
1573 int old_errno
= errno
;
1575 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1576 if (! pthread_equal (pthread_self (), main_thread
))
1578 thread_backtrace_npointers
1579 = backtrace (thread_backtrace_buffer
, BACKTRACE_LIMIT_MAX
);
1580 sigaction (sig
, &process_fatal_action
, 0);
1581 pthread_kill (main_thread
, sig
);
1583 /* Avoid further damage while the main thread is exiting. */
1585 sigsuspend (&empty_mask
);
1593 #if !HAVE_DECL_SYS_SIGLIST
1595 # ifdef _sys_siglist
1596 # define sys_siglist _sys_siglist
1598 # define sys_siglist my_sys_siglist
1599 static char const *sys_siglist
[NSIG
];
1604 # define sys_siglist_entries _sys_nsig
1606 # define sys_siglist_entries NSIG
1609 /* Handle bus errors, invalid instruction, etc. */
1611 handle_fatal_signal (int sig
)
1613 terminate_due_to_signal (sig
, 40);
1617 deliver_fatal_signal (int sig
)
1619 deliver_process_signal (sig
, handle_fatal_signal
);
1623 deliver_fatal_thread_signal (int sig
)
1625 deliver_thread_signal (sig
, handle_fatal_signal
);
1628 static _Noreturn
void
1629 handle_arith_signal (int sig
)
1631 pthread_sigmask (SIG_SETMASK
, &empty_mask
, 0);
1632 xsignal0 (Qarith_error
);
1636 deliver_arith_signal (int sig
)
1638 deliver_thread_signal (sig
, handle_arith_signal
);
1641 /* Treat SIG as a terminating signal, unless it is already ignored and
1642 we are in --batch mode. Among other things, this makes nohup work. */
1644 maybe_fatal_sig (int sig
)
1646 bool catch_sig
= !noninteractive
;
1649 struct sigaction old_action
;
1650 sigaction (sig
, 0, &old_action
);
1651 catch_sig
= old_action
.sa_handler
!= SIG_IGN
;
1654 sigaction (sig
, &process_fatal_action
, 0);
1658 init_signals (bool dumping
)
1660 struct sigaction thread_fatal_action
;
1661 struct sigaction action
;
1663 sigemptyset (&empty_mask
);
1665 #ifdef FORWARD_SIGNAL_TO_MAIN_THREAD
1666 main_thread
= pthread_self ();
1669 #if !HAVE_DECL_SYS_SIGLIST && !defined _sys_siglist
1672 sys_siglist
[SIGABRT
] = "Aborted";
1674 sys_siglist
[SIGAIO
] = "LAN I/O interrupt";
1677 sys_siglist
[SIGALRM
] = "Alarm clock";
1680 sys_siglist
[SIGBUS
] = "Bus error";
1683 sys_siglist
[SIGCLD
] = "Child status changed";
1686 sys_siglist
[SIGCHLD
] = "Child status changed";
1689 sys_siglist
[SIGCONT
] = "Continued";
1692 sys_siglist
[SIGDANGER
] = "Swap space dangerously low";
1695 sys_siglist
[SIGDGNOTIFY
] = "Notification message in queue";
1698 sys_siglist
[SIGEMT
] = "Emulation trap";
1700 sys_siglist
[SIGFPE
] = "Arithmetic exception";
1702 sys_siglist
[SIGFREEZE
] = "SIGFREEZE";
1705 sys_siglist
[SIGGRANT
] = "Monitor mode granted";
1708 sys_siglist
[SIGHUP
] = "Hangup";
1710 sys_siglist
[SIGILL
] = "Illegal instruction";
1711 sys_siglist
[SIGINT
] = "Interrupt";
1713 sys_siglist
[SIGIO
] = "I/O possible";
1716 sys_siglist
[SIGIOINT
] = "I/O intervention required";
1719 sys_siglist
[SIGIOT
] = "IOT trap";
1722 sys_siglist
[SIGKILL
] = "Killed";
1725 sys_siglist
[SIGLOST
] = "Resource lost";
1728 sys_siglist
[SIGLWP
] = "SIGLWP";
1731 sys_siglist
[SIGMSG
] = "Monitor mode data available";
1734 sys_siglist
[SIGWIND
] = "SIGPHONE";
1737 sys_siglist
[SIGPIPE
] = "Broken pipe";
1740 sys_siglist
[SIGPOLL
] = "Pollable event occurred";
1743 sys_siglist
[SIGPROF
] = "Profiling timer expired";
1746 sys_siglist
[SIGPTY
] = "PTY I/O interrupt";
1749 sys_siglist
[SIGPWR
] = "Power-fail restart";
1752 sys_siglist
[SIGQUIT
] = "Quit";
1755 sys_siglist
[SIGRETRACT
] = "Need to relinquish monitor mode";
1758 sys_siglist
[SIGSAK
] = "Secure attention";
1760 sys_siglist
[SIGSEGV
] = "Segmentation violation";
1762 sys_siglist
[SIGSOUND
] = "Sound completed";
1765 sys_siglist
[SIGSTOP
] = "Stopped (signal)";
1768 sys_siglist
[SIGSTP
] = "Stopped (user)";
1771 sys_siglist
[SIGSYS
] = "Bad argument to system call";
1773 sys_siglist
[SIGTERM
] = "Terminated";
1775 sys_siglist
[SIGTHAW
] = "SIGTHAW";
1778 sys_siglist
[SIGTRAP
] = "Trace/breakpoint trap";
1781 sys_siglist
[SIGTSTP
] = "Stopped (user)";
1784 sys_siglist
[SIGTTIN
] = "Stopped (tty input)";
1787 sys_siglist
[SIGTTOU
] = "Stopped (tty output)";
1790 sys_siglist
[SIGURG
] = "Urgent I/O condition";
1793 sys_siglist
[SIGUSR1
] = "User defined signal 1";
1796 sys_siglist
[SIGUSR2
] = "User defined signal 2";
1799 sys_siglist
[SIGVTALRM
] = "Virtual timer expired";
1802 sys_siglist
[SIGWAITING
] = "Process's LWPs are blocked";
1805 sys_siglist
[SIGWINCH
] = "Window size changed";
1808 sys_siglist
[SIGWIND
] = "SIGWIND";
1811 sys_siglist
[SIGXCPU
] = "CPU time limit exceeded";
1814 sys_siglist
[SIGXFSZ
] = "File size limit exceeded";
1817 #endif /* !HAVE_DECL_SYS_SIGLIST && !_sys_siglist */
1819 /* Don't alter signal handlers if dumping. On some machines,
1820 changing signal handlers sets static data that would make signals
1821 fail to work right when the dumped Emacs is run. */
1825 sigfillset (&process_fatal_action
.sa_mask
);
1826 process_fatal_action
.sa_handler
= deliver_fatal_signal
;
1827 process_fatal_action
.sa_flags
= emacs_sigaction_flags ();
1829 sigfillset (&thread_fatal_action
.sa_mask
);
1830 thread_fatal_action
.sa_handler
= deliver_fatal_thread_signal
;
1831 thread_fatal_action
.sa_flags
= process_fatal_action
.sa_flags
;
1833 /* SIGINT may need special treatment on MS-Windows. See
1834 http://lists.gnu.org/archive/html/emacs-devel/2010-09/msg01062.html
1835 Please update the doc of kill-emacs, kill-emacs-hook, and
1836 NEWS if you change this. */
1838 maybe_fatal_sig (SIGHUP
);
1839 maybe_fatal_sig (SIGINT
);
1840 maybe_fatal_sig (SIGTERM
);
1842 /* Emacs checks for write errors, so it can safely ignore SIGPIPE.
1843 However, in batch mode leave SIGPIPE alone, as that causes Emacs
1844 to behave more like typical batch applications do. */
1845 if (! noninteractive
)
1846 signal (SIGPIPE
, SIG_IGN
);
1848 sigaction (SIGQUIT
, &process_fatal_action
, 0);
1849 sigaction (SIGILL
, &thread_fatal_action
, 0);
1850 sigaction (SIGTRAP
, &thread_fatal_action
, 0);
1852 /* Typically SIGFPE is thread-specific and is fatal, like SIGILL.
1853 But on a non-IEEE host SIGFPE can come from a trap in the Lisp
1854 interpreter's floating point operations, so treat SIGFPE as an
1855 arith-error if it arises in the main thread. */
1856 if (IEEE_FLOATING_POINT
)
1857 sigaction (SIGFPE
, &thread_fatal_action
, 0);
1860 emacs_sigaction_init (&action
, deliver_arith_signal
);
1861 sigaction (SIGFPE
, &action
, 0);
1865 add_user_signal (SIGUSR1
, "sigusr1");
1868 add_user_signal (SIGUSR2
, "sigusr2");
1870 sigaction (SIGABRT
, &thread_fatal_action
, 0);
1872 sigaction (SIGPRE
, &thread_fatal_action
, 0);
1875 sigaction (SIGORE
, &thread_fatal_action
, 0);
1878 sigaction (SIGUME
, &thread_fatal_action
, 0);
1881 sigaction (SIGDLK
, &process_fatal_action
, 0);
1884 sigaction (SIGCPULIM
, &process_fatal_action
, 0);
1887 sigaction (SIGIOT
, &thread_fatal_action
, 0);
1890 sigaction (SIGEMT
, &thread_fatal_action
, 0);
1893 sigaction (SIGBUS
, &thread_fatal_action
, 0);
1895 sigaction (SIGSEGV
, &thread_fatal_action
, 0);
1897 sigaction (SIGSYS
, &thread_fatal_action
, 0);
1899 sigaction (SIGTERM
, &process_fatal_action
, 0);
1901 signal (SIGPROF
, SIG_IGN
);
1904 sigaction (SIGVTALRM
, &process_fatal_action
, 0);
1907 sigaction (SIGXCPU
, &process_fatal_action
, 0);
1910 sigaction (SIGXFSZ
, &process_fatal_action
, 0);
1914 /* This just means available memory is getting low. */
1915 emacs_sigaction_init (&action
, deliver_danger_signal
);
1916 sigaction (SIGDANGER
, &action
, 0);
1919 /* AIX-specific signals. */
1921 sigaction (SIGGRANT
, &process_fatal_action
, 0);
1924 sigaction (SIGMIGRATE
, &process_fatal_action
, 0);
1927 sigaction (SIGMSG
, &process_fatal_action
, 0);
1930 sigaction (SIGRETRACT
, &process_fatal_action
, 0);
1933 sigaction (SIGSAK
, &process_fatal_action
, 0);
1936 sigaction (SIGSOUND
, &process_fatal_action
, 0);
1939 sigaction (SIGTALRM
, &thread_fatal_action
, 0);
1949 /* Figure out how many bits the system's random number generator uses.
1950 `random' and `lrand48' are assumed to return 31 usable bits.
1951 BSD `rand' returns a 31 bit value but the low order bits are unusable;
1952 so we'll shift it and treat it like the 15-bit USG `rand'. */
1956 # define RAND_BITS 31
1957 # else /* !HAVE_RANDOM */
1958 # ifdef HAVE_LRAND48
1959 # define RAND_BITS 31
1960 # define random lrand48
1961 # else /* !HAVE_LRAND48 */
1962 # define RAND_BITS 15
1963 # if RAND_MAX == 32767
1964 # define random rand
1965 # else /* RAND_MAX != 32767 */
1966 # if RAND_MAX == 2147483647
1967 # define random() (rand () >> 16)
1968 # else /* RAND_MAX != 2147483647 */
1970 # define random rand
1972 # define random() (rand () >> 16)
1974 # endif /* RAND_MAX != 2147483647 */
1975 # endif /* RAND_MAX != 32767 */
1976 # endif /* !HAVE_LRAND48 */
1977 # endif /* !HAVE_RANDOM */
1978 #endif /* !RAND_BITS */
1981 seed_random (void *seed
, ptrdiff_t seed_size
)
1983 #if defined HAVE_RANDOM || ! defined HAVE_LRAND48
1984 unsigned int arg
= 0;
1988 unsigned char *argp
= (unsigned char *) &arg
;
1989 unsigned char *seedp
= seed
;
1991 for (i
= 0; i
< seed_size
; i
++)
1992 argp
[i
% sizeof arg
] ^= seedp
[i
];
1996 # ifdef HAVE_LRAND48
2007 EMACS_TIME t
= current_emacs_time ();
2008 uintmax_t v
= getpid () ^ EMACS_SECS (t
) ^ EMACS_NSECS (t
);
2009 seed_random (&v
, sizeof v
);
2013 * Return a nonnegative random integer out of whatever we've got.
2014 * It contains enough bits to make a random (signed) Emacs fixnum.
2015 * This suffices even for a 64-bit architecture with a 15-bit rand.
2022 for (i
= 0; i
< (FIXNUM_BITS
+ RAND_BITS
- 1) / RAND_BITS
; i
++)
2023 val
= (random () ^ (val
<< RAND_BITS
)
2024 ^ (val
>> (BITS_PER_EMACS_INT
- RAND_BITS
)));
2025 val
^= val
>> (BITS_PER_EMACS_INT
- FIXNUM_BITS
);
2026 return val
& INTMASK
;
2029 #ifndef HAVE_SNPRINTF
2030 /* Approximate snprintf as best we can on ancient hosts that lack it. */
2032 snprintf (char *buf
, size_t bufsize
, char const *format
, ...)
2034 ptrdiff_t size
= min (bufsize
, PTRDIFF_MAX
);
2035 ptrdiff_t nbytes
= size
- 1;
2040 va_start (ap
, format
);
2041 nbytes
= doprnt (buf
, size
, format
, 0, ap
);
2045 if (nbytes
== size
- 1)
2047 /* Calculate the length of the string that would have been created
2048 had the buffer been large enough. */
2049 char stackbuf
[4000];
2051 ptrdiff_t bsize
= sizeof stackbuf
;
2052 va_start (ap
, format
);
2053 nbytes
= evxprintf (&b
, &bsize
, stackbuf
, -1, format
, ap
);
2059 if (INT_MAX
< nbytes
)
2072 /* If a backtrace is available, output the top lines of it to stderr.
2073 Do not output more than BACKTRACE_LIMIT or BACKTRACE_LIMIT_MAX lines.
2074 This function may be called from a signal handler, so it should
2075 not invoke async-unsafe functions like malloc. */
2077 emacs_backtrace (int backtrace_limit
)
2079 void *main_backtrace_buffer
[BACKTRACE_LIMIT_MAX
+ 1];
2080 int bounded_limit
= min (backtrace_limit
, BACKTRACE_LIMIT_MAX
);
2084 if (thread_backtrace_npointers
)
2086 buffer
= thread_backtrace_buffer
;
2087 npointers
= thread_backtrace_npointers
;
2091 buffer
= main_backtrace_buffer
;
2092 npointers
= backtrace (buffer
, bounded_limit
+ 1);
2097 ignore_value (write (STDERR_FILENO
, "\nBacktrace:\n", 12));
2098 backtrace_symbols_fd (buffer
, npointers
, STDERR_FILENO
);
2099 if (bounded_limit
< npointers
)
2100 ignore_value (write (STDERR_FILENO
, "...\n", 4));
2108 terminate_due_to_signal (SIGABRT
, 10);
2113 emacs_open (const char *path
, int oflag
, int mode
)
2115 register int rtnval
;
2117 while ((rtnval
= open (path
, oflag
, mode
)) == -1
2118 && (errno
== EINTR
))
2124 emacs_close (int fd
)
2127 register int rtnval
;
2129 while ((rtnval
= close (fd
)) == -1
2130 && (errno
== EINTR
))
2133 /* If close is interrupted SunOS 4.1 may or may not have closed the
2134 file descriptor. If it did the second close will fail with
2135 errno = EBADF. That means we have succeeded. */
2136 if (rtnval
== -1 && did_retry
&& errno
== EBADF
)
2142 /* Maximum number of bytes to read or write in a single system call.
2143 This works around a serious bug in Linux kernels before 2.6.16; see
2144 <https://bugzilla.redhat.com/show_bug.cgi?format=multiple&id=612839>.
2145 It's likely to work around similar bugs in other operating systems, so do it
2146 on all platforms. Round INT_MAX down to a page size, with the conservative
2147 assumption that page sizes are at most 2**18 bytes (any kernel with a
2148 page size larger than that shouldn't have the bug). */
2149 #ifndef MAX_RW_COUNT
2150 #define MAX_RW_COUNT (INT_MAX >> 18 << 18)
2153 /* Read from FILEDESC to a buffer BUF with size NBYTE, retrying if interrupted.
2154 Return the number of bytes read, which might be less than NBYTE.
2155 On error, set errno and return -1. */
2157 emacs_read (int fildes
, char *buf
, ptrdiff_t nbyte
)
2159 register ssize_t rtnval
;
2161 /* There is no need to check against MAX_RW_COUNT, since no caller ever
2162 passes a size that large to emacs_read. */
2164 while ((rtnval
= read (fildes
, buf
, nbyte
)) == -1
2165 && (errno
== EINTR
))
2170 /* Write to FILEDES from a buffer BUF with size NBYTE, retrying if interrupted
2171 or if a partial write occurs. Return the number of bytes written, setting
2172 errno if this is less than NBYTE. */
2174 emacs_write (int fildes
, const char *buf
, ptrdiff_t nbyte
)
2177 ptrdiff_t bytes_written
;
2183 rtnval
= write (fildes
, buf
, min (nbyte
, MAX_RW_COUNT
));
2189 /* I originally used `QUIT' but that might causes files to
2190 be truncated if you hit C-g in the middle of it. --Stef */
2191 if (pending_signals
)
2192 process_pending_signals ();
2201 bytes_written
+= rtnval
;
2204 return (bytes_written
);
2207 static struct allocator
const emacs_norealloc_allocator
=
2208 { xmalloc
, NULL
, xfree
, memory_full
};
2210 /* Get the symbolic link value of FILENAME. Return a pointer to a
2211 NUL-terminated string. If readlink fails, return NULL and set
2212 errno. If the value fits in INITIAL_BUF, return INITIAL_BUF.
2213 Otherwise, allocate memory and return a pointer to that memory. If
2214 memory allocation fails, diagnose and fail without returning. If
2215 successful, store the length of the symbolic link into *LINKLEN. */
2217 emacs_readlink (char const *filename
, char initial_buf
[READLINK_BUFSIZE
])
2219 return careadlinkat (AT_FDCWD
, filename
, initial_buf
, READLINK_BUFSIZE
,
2220 &emacs_norealloc_allocator
, careadlinkatcwd
);
2223 /* Return a struct timeval that is roughly equivalent to T.
2224 Use the least timeval not less than T.
2225 Return an extremal value if the result would overflow. */
2227 make_timeval (EMACS_TIME t
)
2230 tv
.tv_sec
= t
.tv_sec
;
2231 tv
.tv_usec
= t
.tv_nsec
/ 1000;
2233 if (t
.tv_nsec
% 1000 != 0)
2235 if (tv
.tv_usec
< 999999)
2237 else if (tv
.tv_sec
< TYPE_MAXIMUM (time_t))
2247 /* Set the access and modification time stamps of FD (a.k.a. FILE) to be
2248 ATIME and MTIME, respectively.
2249 FD must be either negative -- in which case it is ignored --
2250 or a file descriptor that is open on FILE.
2251 If FD is nonnegative, then FILE can be NULL. */
2253 set_file_times (int fd
, const char *filename
,
2254 EMACS_TIME atime
, EMACS_TIME mtime
)
2256 struct timespec timespec
[2];
2257 timespec
[0] = atime
;
2258 timespec
[1] = mtime
;
2259 return fdutimens (fd
, filename
, timespec
);
2262 /* Like strsignal, except async-signal-safe, and this function typically
2263 returns a string in the C locale rather than the current locale. */
2265 safe_strsignal (int code
)
2267 char const *signame
= 0;
2269 if (0 <= code
&& code
< sys_siglist_entries
)
2270 signame
= sys_siglist
[code
];
2272 signame
= "Unknown signal";
2278 /* For make-serial-process */
2280 serial_open (char *port
)
2282 int fd
= emacs_open (port
, O_RDWR
| O_NOCTTY
| O_NONBLOCK
, 0);
2285 error ("Could not open %s: %s",
2286 port
, emacs_strerror (errno
));
2289 ioctl (fd
, TIOCEXCL
, (char *) 0);
2295 #if !defined (HAVE_CFMAKERAW)
2296 /* Workaround for targets which are missing cfmakeraw. */
2297 /* Pasted from man page. */
2299 cfmakeraw (struct termios
*termios_p
)
2301 termios_p
->c_iflag
&= ~(IGNBRK
|BRKINT
|PARMRK
|ISTRIP
|INLCR
|IGNCR
|ICRNL
|IXON
);
2302 termios_p
->c_oflag
&= ~OPOST
;
2303 termios_p
->c_lflag
&= ~(ECHO
|ECHONL
|ICANON
|ISIG
|IEXTEN
);
2304 termios_p
->c_cflag
&= ~(CSIZE
|PARENB
);
2305 termios_p
->c_cflag
|= CS8
;
2307 #endif /* !defined (HAVE_CFMAKERAW */
2309 #if !defined (HAVE_CFSETSPEED)
2310 /* Workaround for targets which are missing cfsetspeed. */
2312 cfsetspeed (struct termios
*termios_p
, speed_t vitesse
)
2314 return (cfsetispeed (termios_p
, vitesse
)
2315 + cfsetospeed (termios_p
, vitesse
));
2319 /* For serial-process-configure */
2321 serial_configure (struct Lisp_Process
*p
,
2322 Lisp_Object contact
)
2324 Lisp_Object childp2
= Qnil
;
2325 Lisp_Object tem
= Qnil
;
2326 struct termios attr
;
2328 char summary
[4] = "???"; /* This usually becomes "8N1". */
2330 childp2
= Fcopy_sequence (p
->childp
);
2332 /* Read port attributes and prepare default configuration. */
2333 err
= tcgetattr (p
->outfd
, &attr
);
2335 error ("tcgetattr() failed: %s", emacs_strerror (errno
));
2337 #if defined (CLOCAL)
2338 attr
.c_cflag
|= CLOCAL
;
2341 attr
.c_cflag
|= CREAD
;
2344 /* Configure speed. */
2345 if (!NILP (Fplist_member (contact
, QCspeed
)))
2346 tem
= Fplist_get (contact
, QCspeed
);
2348 tem
= Fplist_get (p
->childp
, QCspeed
);
2350 err
= cfsetspeed (&attr
, XINT (tem
));
2352 error ("cfsetspeed(%"pI
"d) failed: %s", XINT (tem
),
2353 emacs_strerror (errno
));
2354 childp2
= Fplist_put (childp2
, QCspeed
, tem
);
2356 /* Configure bytesize. */
2357 if (!NILP (Fplist_member (contact
, QCbytesize
)))
2358 tem
= Fplist_get (contact
, QCbytesize
);
2360 tem
= Fplist_get (p
->childp
, QCbytesize
);
2362 tem
= make_number (8);
2364 if (XINT (tem
) != 7 && XINT (tem
) != 8)
2365 error (":bytesize must be nil (8), 7, or 8");
2366 summary
[0] = XINT (tem
) + '0';
2367 #if defined (CSIZE) && defined (CS7) && defined (CS8)
2368 attr
.c_cflag
&= ~CSIZE
;
2369 attr
.c_cflag
|= ((XINT (tem
) == 7) ? CS7
: CS8
);
2371 /* Don't error on bytesize 8, which should be set by cfmakeraw. */
2372 if (XINT (tem
) != 8)
2373 error ("Bytesize cannot be changed");
2375 childp2
= Fplist_put (childp2
, QCbytesize
, tem
);
2377 /* Configure parity. */
2378 if (!NILP (Fplist_member (contact
, QCparity
)))
2379 tem
= Fplist_get (contact
, QCparity
);
2381 tem
= Fplist_get (p
->childp
, QCparity
);
2382 if (!NILP (tem
) && !EQ (tem
, Qeven
) && !EQ (tem
, Qodd
))
2383 error (":parity must be nil (no parity), `even', or `odd'");
2384 #if defined (PARENB) && defined (PARODD) && defined (IGNPAR) && defined (INPCK)
2385 attr
.c_cflag
&= ~(PARENB
| PARODD
);
2386 attr
.c_iflag
&= ~(IGNPAR
| INPCK
);
2391 else if (EQ (tem
, Qeven
))
2394 attr
.c_cflag
|= PARENB
;
2395 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2397 else if (EQ (tem
, Qodd
))
2400 attr
.c_cflag
|= (PARENB
| PARODD
);
2401 attr
.c_iflag
|= (IGNPAR
| INPCK
);
2404 /* Don't error on no parity, which should be set by cfmakeraw. */
2406 error ("Parity cannot be configured");
2408 childp2
= Fplist_put (childp2
, QCparity
, tem
);
2410 /* Configure stopbits. */
2411 if (!NILP (Fplist_member (contact
, QCstopbits
)))
2412 tem
= Fplist_get (contact
, QCstopbits
);
2414 tem
= Fplist_get (p
->childp
, QCstopbits
);
2416 tem
= make_number (1);
2418 if (XINT (tem
) != 1 && XINT (tem
) != 2)
2419 error (":stopbits must be nil (1 stopbit), 1, or 2");
2420 summary
[2] = XINT (tem
) + '0';
2421 #if defined (CSTOPB)
2422 attr
.c_cflag
&= ~CSTOPB
;
2423 if (XINT (tem
) == 2)
2424 attr
.c_cflag
|= CSTOPB
;
2426 /* Don't error on 1 stopbit, which should be set by cfmakeraw. */
2427 if (XINT (tem
) != 1)
2428 error ("Stopbits cannot be configured");
2430 childp2
= Fplist_put (childp2
, QCstopbits
, tem
);
2432 /* Configure flowcontrol. */
2433 if (!NILP (Fplist_member (contact
, QCflowcontrol
)))
2434 tem
= Fplist_get (contact
, QCflowcontrol
);
2436 tem
= Fplist_get (p
->childp
, QCflowcontrol
);
2437 if (!NILP (tem
) && !EQ (tem
, Qhw
) && !EQ (tem
, Qsw
))
2438 error (":flowcontrol must be nil (no flowcontrol), `hw', or `sw'");
2439 #if defined (CRTSCTS)
2440 attr
.c_cflag
&= ~CRTSCTS
;
2442 #if defined (CNEW_RTSCTS)
2443 attr
.c_cflag
&= ~CNEW_RTSCTS
;
2445 #if defined (IXON) && defined (IXOFF)
2446 attr
.c_iflag
&= ~(IXON
| IXOFF
);
2450 /* Already configured. */
2452 else if (EQ (tem
, Qhw
))
2454 #if defined (CRTSCTS)
2455 attr
.c_cflag
|= CRTSCTS
;
2456 #elif defined (CNEW_RTSCTS)
2457 attr
.c_cflag
|= CNEW_RTSCTS
;
2459 error ("Hardware flowcontrol (RTS/CTS) not supported");
2462 else if (EQ (tem
, Qsw
))
2464 #if defined (IXON) && defined (IXOFF)
2465 attr
.c_iflag
|= (IXON
| IXOFF
);
2467 error ("Software flowcontrol (XON/XOFF) not supported");
2470 childp2
= Fplist_put (childp2
, QCflowcontrol
, tem
);
2472 /* Activate configuration. */
2473 err
= tcsetattr (p
->outfd
, TCSANOW
, &attr
);
2475 error ("tcsetattr() failed: %s", emacs_strerror (errno
));
2477 childp2
= Fplist_put (childp2
, QCsummary
, build_string (summary
));
2478 pset_childp (p
, childp2
);
2480 #endif /* not DOS_NT */
2482 /* System depended enumeration of and access to system processes a-la ps(1). */
2486 /* Process enumeration and access via /proc. */
2489 list_system_processes (void)
2491 Lisp_Object procdir
, match
, proclist
, next
;
2492 struct gcpro gcpro1
, gcpro2
;
2493 register Lisp_Object tail
;
2495 GCPRO2 (procdir
, match
);
2496 /* For every process on the system, there's a directory in the
2497 "/proc" pseudo-directory whose name is the numeric ID of that
2499 procdir
= build_string ("/proc");
2500 match
= build_string ("[0-9]+");
2501 proclist
= directory_files_internal (procdir
, Qnil
, match
, Qt
, 0, Qnil
);
2503 /* `proclist' gives process IDs as strings. Destructively convert
2504 each string into a number. */
2505 for (tail
= proclist
; CONSP (tail
); tail
= next
)
2508 XSETCAR (tail
, Fstring_to_number (XCAR (tail
), Qnil
));
2512 /* directory_files_internal returns the files in reverse order; undo
2514 proclist
= Fnreverse (proclist
);
2518 #elif defined BSD_SYSTEM
2521 list_system_processes (void)
2523 #if defined DARWIN_OS || defined __NetBSD__ || defined __OpenBSD__
2524 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_ALL
};
2526 int mib
[] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PROC
};
2529 struct kinfo_proc
*procs
;
2532 struct gcpro gcpro1
;
2533 Lisp_Object proclist
= Qnil
;
2535 if (sysctl (mib
, 3, NULL
, &len
, NULL
, 0) != 0)
2538 procs
= xmalloc (len
);
2539 if (sysctl (mib
, 3, procs
, &len
, NULL
, 0) != 0)
2546 len
/= sizeof (struct kinfo_proc
);
2547 for (i
= 0; i
< len
; i
++)
2549 #if defined DARWIN_OS || defined __NetBSD__
2550 proclist
= Fcons (make_fixnum_or_float (procs
[i
].kp_proc
.p_pid
), proclist
);
2551 #elif defined __OpenBSD__
2552 proclist
= Fcons (make_fixnum_or_float (procs
[i
].p_pid
), proclist
);
2554 proclist
= Fcons (make_fixnum_or_float (procs
[i
].ki_pid
), proclist
);
2564 /* The WINDOWSNT implementation is in w32.c.
2565 The MSDOS implementation is in dosfns.c. */
2566 #elif !defined (WINDOWSNT) && !defined (MSDOS)
2569 list_system_processes (void)
2574 #endif /* !defined (WINDOWSNT) */
2578 time_from_jiffies (unsigned long long tval
, long hz
)
2580 unsigned long long s
= tval
/ hz
;
2581 unsigned long long frac
= tval
% hz
;
2584 if (TYPE_MAXIMUM (time_t) < s
)
2586 if (LONG_MAX
- 1 <= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
2587 || frac
<= ULLONG_MAX
/ EMACS_TIME_RESOLUTION
)
2588 ns
= frac
* EMACS_TIME_RESOLUTION
/ hz
;
2591 /* This is reachable only in the unlikely case that HZ * HZ
2592 exceeds ULLONG_MAX. It calculates an approximation that is
2593 guaranteed to be in range. */
2594 long hz_per_ns
= (hz
/ EMACS_TIME_RESOLUTION
2595 + (hz
% EMACS_TIME_RESOLUTION
!= 0));
2596 ns
= frac
/ hz_per_ns
;
2599 return make_emacs_time (s
, ns
);
2603 ltime_from_jiffies (unsigned long long tval
, long hz
)
2605 EMACS_TIME t
= time_from_jiffies (tval
, hz
);
2606 return make_lisp_time (t
);
2613 EMACS_TIME up
= make_emacs_time (0, 0);
2616 fup
= fopen ("/proc/uptime", "r");
2620 unsigned long long upsec
, upfrac
, idlesec
, idlefrac
;
2621 int upfrac_start
, upfrac_end
, idlefrac_start
, idlefrac_end
;
2623 if (fscanf (fup
, "%llu.%n%llu%n %llu.%n%llu%n",
2624 &upsec
, &upfrac_start
, &upfrac
, &upfrac_end
,
2625 &idlesec
, &idlefrac_start
, &idlefrac
, &idlefrac_end
)
2628 if (TYPE_MAXIMUM (time_t) < upsec
)
2630 upsec
= TYPE_MAXIMUM (time_t);
2631 upfrac
= EMACS_TIME_RESOLUTION
- 1;
2635 int upfraclen
= upfrac_end
- upfrac_start
;
2636 for (; upfraclen
< LOG10_EMACS_TIME_RESOLUTION
; upfraclen
++)
2638 for (; LOG10_EMACS_TIME_RESOLUTION
< upfraclen
; upfraclen
--)
2640 upfrac
= min (upfrac
, EMACS_TIME_RESOLUTION
- 1);
2642 up
= make_emacs_time (upsec
, upfrac
);
2651 #define MAJOR(d) (((unsigned)(d) >> 8) & 0xfff)
2652 #define MINOR(d) (((unsigned)(d) & 0xff) | (((unsigned)(d) & 0xfff00000) >> 12))
2655 procfs_ttyname (int rdev
)
2658 char name
[PATH_MAX
];
2661 fdev
= fopen ("/proc/tty/drivers", "r");
2666 unsigned long minor_beg
, minor_end
;
2667 char minor
[25]; /* 2 32-bit numbers + dash */
2670 while (!feof (fdev
) && !ferror (fdev
))
2672 if (3 <= fscanf (fdev
, "%*s %s %u %s %*s\n", name
, &major
, minor
)
2673 && major
== MAJOR (rdev
))
2675 minor_beg
= strtoul (minor
, &endp
, 0);
2677 minor_end
= minor_beg
;
2678 else if (*endp
== '-')
2679 minor_end
= strtoul (endp
+ 1, &endp
, 0);
2683 if (MINOR (rdev
) >= minor_beg
&& MINOR (rdev
) <= minor_end
)
2685 sprintf (name
+ strlen (name
), "%u", MINOR (rdev
));
2693 return build_string (name
);
2696 static unsigned long
2697 procfs_get_total_memory (void)
2700 unsigned long retval
= 2 * 1024 * 1024; /* default: 2GB */
2703 fmem
= fopen ("/proc/meminfo", "r");
2707 unsigned long entry_value
;
2708 char entry_name
[20]; /* the longest I saw is 13+1 */
2710 while (!feof (fmem
) && !ferror (fmem
))
2712 if (2 <= fscanf (fmem
, "%s %lu kB\n", entry_name
, &entry_value
)
2713 && strcmp (entry_name
, "MemTotal:") == 0)
2715 retval
= entry_value
;
2726 system_process_attributes (Lisp_Object pid
)
2728 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2732 long clocks_per_sec
;
2734 char procbuf
[1025], *p
, *q
;
2737 static char const default_cmd
[] = "???";
2738 const char *cmd
= default_cmd
;
2739 int cmdsize
= sizeof default_cmd
- 1;
2740 char *cmdline
= NULL
;
2741 ptrdiff_t cmdline_size
;
2744 int ppid
, pgrp
, sess
, tty
, tpgid
, thcount
;
2747 unsigned long long u_time
, s_time
, cutime
, cstime
, start
;
2748 long priority
, niceness
, rss
;
2749 unsigned long minflt
, majflt
, cminflt
, cmajflt
, vsize
;
2750 EMACS_TIME tnow
, tstart
, tboot
, telapsed
, us_time
;
2752 Lisp_Object attrs
= Qnil
;
2753 Lisp_Object cmd_str
, decoded_cmd
, tem
;
2754 struct gcpro gcpro1
, gcpro2
;
2756 CHECK_NUMBER_OR_FLOAT (pid
);
2757 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2758 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2759 if (stat (procfn
, &st
) < 0)
2762 GCPRO2 (attrs
, decoded_cmd
);
2766 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
2768 pw
= getpwuid (uid
);
2771 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
2774 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
2776 gr
= getgrgid (gid
);
2779 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
2781 strcpy (fn
, procfn
);
2782 procfn_end
= fn
+ strlen (fn
);
2783 strcpy (procfn_end
, "/stat");
2784 fd
= emacs_open (fn
, O_RDONLY
, 0);
2785 if (fd
>= 0 && (nread
= emacs_read (fd
, procbuf
, sizeof (procbuf
) - 1)) > 0)
2787 procbuf
[nread
] = '\0';
2790 p
= strchr (p
, '(');
2793 q
= strrchr (p
+ 1, ')');
2803 /* Command name is encoded in locale-coding-system; decode it. */
2804 cmd_str
= make_unibyte_string (cmd
, cmdsize
);
2805 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2806 Vlocale_coding_system
, 0);
2807 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
2811 EMACS_INT ppid_eint
, pgrp_eint
, sess_eint
, tpgid_eint
, thcount_eint
;
2813 /* state ppid pgrp sess tty tpgid . minflt cminflt majflt cmajflt utime stime cutime cstime priority nice thcount . start vsize rss */
2814 sscanf (p
, "%c %d %d %d %d %d %*u %lu %lu %lu %lu %Lu %Lu %Lu %Lu %ld %ld %d %*d %Lu %lu %ld",
2815 &c
, &ppid
, &pgrp
, &sess
, &tty
, &tpgid
,
2816 &minflt
, &cminflt
, &majflt
, &cmajflt
,
2817 &u_time
, &s_time
, &cutime
, &cstime
,
2818 &priority
, &niceness
, &thcount
, &start
, &vsize
, &rss
);
2823 state_str
[1] = '\0';
2824 tem
= build_string (state_str
);
2825 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
2827 /* Stops GCC whining about limited range of data type. */
2832 thcount_eint
= thcount
;
2833 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (ppid_eint
)), attrs
);
2834 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pgrp_eint
)), attrs
);
2835 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (sess_eint
)), attrs
);
2836 attrs
= Fcons (Fcons (Qttname
, procfs_ttyname (tty
)), attrs
);
2837 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (tpgid_eint
)), attrs
);
2838 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (minflt
)), attrs
);
2839 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (majflt
)), attrs
);
2840 attrs
= Fcons (Fcons (Qcminflt
, make_fixnum_or_float (cminflt
)), attrs
);
2841 attrs
= Fcons (Fcons (Qcmajflt
, make_fixnum_or_float (cmajflt
)), attrs
);
2842 clocks_per_sec
= sysconf (_SC_CLK_TCK
);
2843 if (clocks_per_sec
< 0)
2844 clocks_per_sec
= 100;
2845 attrs
= Fcons (Fcons (Qutime
,
2846 ltime_from_jiffies (u_time
, clocks_per_sec
)),
2848 attrs
= Fcons (Fcons (Qstime
,
2849 ltime_from_jiffies (s_time
, clocks_per_sec
)),
2851 attrs
= Fcons (Fcons (Qtime
,
2852 ltime_from_jiffies (s_time
+ u_time
,
2855 attrs
= Fcons (Fcons (Qcutime
,
2856 ltime_from_jiffies (cutime
, clocks_per_sec
)),
2858 attrs
= Fcons (Fcons (Qcstime
,
2859 ltime_from_jiffies (cstime
, clocks_per_sec
)),
2861 attrs
= Fcons (Fcons (Qctime
,
2862 ltime_from_jiffies (cstime
+cutime
, clocks_per_sec
)),
2864 attrs
= Fcons (Fcons (Qpri
, make_number (priority
)), attrs
);
2865 attrs
= Fcons (Fcons (Qnice
, make_number (niceness
)), attrs
);
2866 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (thcount_eint
)), attrs
);
2867 tnow
= current_emacs_time ();
2868 telapsed
= get_up_time ();
2869 tboot
= sub_emacs_time (tnow
, telapsed
);
2870 tstart
= time_from_jiffies (start
, clocks_per_sec
);
2871 tstart
= add_emacs_time (tboot
, tstart
);
2872 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (tstart
)), attrs
);
2873 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (vsize
/1024)), attrs
);
2874 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (4*rss
)), attrs
);
2875 telapsed
= sub_emacs_time (tnow
, tstart
);
2876 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (telapsed
)), attrs
);
2877 us_time
= time_from_jiffies (u_time
+ s_time
, clocks_per_sec
);
2878 pcpu
= (EMACS_TIME_TO_DOUBLE (us_time
)
2879 / EMACS_TIME_TO_DOUBLE (telapsed
));
2882 attrs
= Fcons (Fcons (Qpcpu
, make_float (100 * pcpu
)), attrs
);
2883 pmem
= 4.0 * 100 * rss
/ procfs_get_total_memory ();
2886 attrs
= Fcons (Fcons (Qpmem
, make_float (pmem
)), attrs
);
2893 strcpy (procfn_end
, "/cmdline");
2894 fd
= emacs_open (fn
, O_RDONLY
, 0);
2898 for (cmdline_size
= 0; cmdline_size
< STRING_BYTES_BOUND
; cmdline_size
++)
2900 if (emacs_read (fd
, &ch
, 1) != 1)
2903 if (c_isspace (c
) || c
== '\\')
2904 cmdline_size
++; /* for later quoting, see below */
2908 cmdline
= xmalloc (cmdline_size
+ 1);
2909 lseek (fd
, 0L, SEEK_SET
);
2911 if ((nread
= read (fd
, cmdline
, cmdline_size
)) >= 0)
2912 cmdline
[nread
++] = '\0';
2915 /* Assigning zero to `nread' makes us skip the following
2916 two loops, assign zero to cmdline_size, and enter the
2917 following `if' clause that handles unknown command
2921 /* We don't want trailing null characters. */
2922 for (p
= cmdline
+ nread
; p
> cmdline
+ 1 && !p
[-1]; p
--)
2924 for (p
= cmdline
; p
< cmdline
+ nread
; p
++)
2926 /* Escape-quote whitespace and backslashes. */
2927 if (c_isspace (*p
) || *p
== '\\')
2929 memmove (p
+ 1, p
, nread
- (p
- cmdline
));
2933 else if (*p
== '\0')
2936 cmdline_size
= nread
;
2940 cmdline_size
= cmdsize
+ 2;
2941 cmdline
= xmalloc (cmdline_size
+ 1);
2942 sprintf (cmdline
, "[%.*s]", cmdsize
, cmd
);
2945 /* Command line is encoded in locale-coding-system; decode it. */
2946 cmd_str
= make_unibyte_string (cmdline
, cmdline_size
);
2947 decoded_cmd
= code_convert_string_norecord (cmd_str
,
2948 Vlocale_coding_system
, 0);
2950 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
2957 #elif defined (SOLARIS2) && defined (HAVE_PROCFS)
2959 /* The <procfs.h> header does not like to be included if _LP64 is defined and
2960 __FILE_OFFSET_BITS == 64. This is an ugly workaround that. */
2961 #if !defined (_LP64) && defined (_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
2962 #define PROCFS_FILE_OFFSET_BITS_HACK 1
2963 #undef _FILE_OFFSET_BITS
2965 #define PROCFS_FILE_OFFSET_BITS_HACK 0
2970 #if PROCFS_FILE_OFFSET_BITS_HACK == 1
2971 #define _FILE_OFFSET_BITS 64
2972 #ifdef _FILE_OFFSET_BITS /* Avoid unused-macro warnings. */
2974 #endif /* PROCFS_FILE_OFFSET_BITS_HACK == 1 */
2977 system_process_attributes (Lisp_Object pid
)
2979 char procfn
[PATH_MAX
], fn
[PATH_MAX
];
2984 struct psinfo pinfo
;
2990 Lisp_Object attrs
= Qnil
;
2991 Lisp_Object decoded_cmd
, tem
;
2992 struct gcpro gcpro1
, gcpro2
;
2994 CHECK_NUMBER_OR_FLOAT (pid
);
2995 CONS_TO_INTEGER (pid
, pid_t
, proc_id
);
2996 sprintf (procfn
, "/proc/%"pMd
, proc_id
);
2997 if (stat (procfn
, &st
) < 0)
3000 GCPRO2 (attrs
, decoded_cmd
);
3004 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (uid
)), attrs
);
3006 pw
= getpwuid (uid
);
3009 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3012 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (gid
)), attrs
);
3014 gr
= getgrgid (gid
);
3017 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3019 strcpy (fn
, procfn
);
3020 procfn_end
= fn
+ strlen (fn
);
3021 strcpy (procfn_end
, "/psinfo");
3022 fd
= emacs_open (fn
, O_RDONLY
, 0);
3024 && (nread
= read (fd
, (char*)&pinfo
, sizeof (struct psinfo
)) > 0))
3026 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (pinfo
.pr_ppid
)), attrs
);
3027 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (pinfo
.pr_pgid
)), attrs
);
3028 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (pinfo
.pr_sid
)), attrs
);
3032 state_str
[0] = pinfo
.pr_lwp
.pr_sname
;
3033 state_str
[1] = '\0';
3034 tem
= build_string (state_str
);
3035 attrs
= Fcons (Fcons (Qstate
, tem
), attrs
);
3038 /* FIXME: missing Qttyname. psinfo.pr_ttydev is a dev_t,
3039 need to get a string from it. */
3041 /* FIXME: missing: Qtpgid */
3053 Are they available? */
3055 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (pinfo
.pr_time
)), attrs
);
3056 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (pinfo
.pr_ctime
)), attrs
);
3057 attrs
= Fcons (Fcons (Qpri
, make_number (pinfo
.pr_lwp
.pr_pri
)), attrs
);
3058 attrs
= Fcons (Fcons (Qnice
, make_number (pinfo
.pr_lwp
.pr_nice
)), attrs
);
3059 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (pinfo
.pr_nlwp
)), attrs
);
3061 attrs
= Fcons (Fcons (Qstart
, make_lisp_time (pinfo
.pr_start
)), attrs
);
3062 attrs
= Fcons (Fcons (Qvsize
, make_fixnum_or_float (pinfo
.pr_size
)), attrs
);
3063 attrs
= Fcons (Fcons (Qrss
, make_fixnum_or_float (pinfo
.pr_rssize
)), attrs
);
3065 /* pr_pctcpu and pr_pctmem are unsigned integers in the
3066 range 0 .. 2**15, representing 0.0 .. 1.0. */
3067 attrs
= Fcons (Fcons (Qpcpu
, make_float (100.0 / 0x8000 * pinfo
.pr_pctcpu
)), attrs
);
3068 attrs
= Fcons (Fcons (Qpmem
, make_float (100.0 / 0x8000 * pinfo
.pr_pctmem
)), attrs
);
3071 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_fname
,
3072 strlen (pinfo
.pr_fname
)),
3073 Vlocale_coding_system
, 0);
3074 attrs
= Fcons (Fcons (Qcomm
, decoded_cmd
), attrs
);
3076 = code_convert_string_norecord (make_unibyte_string (pinfo
.pr_psargs
,
3077 strlen (pinfo
.pr_psargs
)),
3078 Vlocale_coding_system
, 0);
3079 attrs
= Fcons (Fcons (Qargs
, decoded_cmd
), attrs
);
3089 #elif defined __FreeBSD__
3092 timeval_to_EMACS_TIME (struct timeval t
)
3094 return make_emacs_time (t
.tv_sec
, t
.tv_usec
* 1000);
3098 make_lisp_timeval (struct timeval t
)
3100 return make_lisp_time (timeval_to_EMACS_TIME (t
));
3104 system_process_attributes (Lisp_Object pid
)
3107 int pagesize
= getpagesize ();
3114 char args
[MAXPATHLEN
];
3117 int mib
[4] = {CTL_KERN
, KERN_PROC
, KERN_PROC_PID
};
3118 struct kinfo_proc proc
;
3119 size_t proclen
= sizeof proc
;
3121 struct gcpro gcpro1
, gcpro2
;
3122 Lisp_Object attrs
= Qnil
;
3123 Lisp_Object decoded_comm
;
3125 CHECK_NUMBER_OR_FLOAT (pid
);
3126 CONS_TO_INTEGER (pid
, int, proc_id
);
3129 if (sysctl (mib
, 4, &proc
, &proclen
, NULL
, 0) != 0)
3132 GCPRO2 (attrs
, decoded_comm
);
3134 attrs
= Fcons (Fcons (Qeuid
, make_fixnum_or_float (proc
.ki_uid
)), attrs
);
3137 pw
= getpwuid (proc
.ki_uid
);
3140 attrs
= Fcons (Fcons (Quser
, build_string (pw
->pw_name
)), attrs
);
3142 attrs
= Fcons (Fcons (Qegid
, make_fixnum_or_float (proc
.ki_svgid
)), attrs
);
3145 gr
= getgrgid (proc
.ki_svgid
);
3148 attrs
= Fcons (Fcons (Qgroup
, build_string (gr
->gr_name
)), attrs
);
3150 decoded_comm
= code_convert_string_norecord
3151 (make_unibyte_string (proc
.ki_comm
, strlen (proc
.ki_comm
)),
3152 Vlocale_coding_system
, 0);
3154 attrs
= Fcons (Fcons (Qcomm
, decoded_comm
), attrs
);
3156 char state
[2] = {'\0', '\0'};
3157 switch (proc
.ki_stat
)
3179 attrs
= Fcons (Fcons (Qstate
, build_string (state
)), attrs
);
3182 attrs
= Fcons (Fcons (Qppid
, make_fixnum_or_float (proc
.ki_ppid
)), attrs
);
3183 attrs
= Fcons (Fcons (Qpgrp
, make_fixnum_or_float (proc
.ki_pgid
)), attrs
);
3184 attrs
= Fcons (Fcons (Qsess
, make_fixnum_or_float (proc
.ki_sid
)), attrs
);
3187 ttyname
= proc
.ki_tdev
== NODEV
? NULL
: devname (proc
.ki_tdev
, S_IFCHR
);
3190 attrs
= Fcons (Fcons (Qtty
, build_string (ttyname
)), attrs
);
3192 attrs
= Fcons (Fcons (Qtpgid
, make_fixnum_or_float (proc
.ki_tpgid
)), attrs
);
3193 attrs
= Fcons (Fcons (Qminflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_minflt
)), attrs
);
3194 attrs
= Fcons (Fcons (Qmajflt
, make_fixnum_or_float (proc
.ki_rusage
.ru_majflt
)), attrs
);
3195 attrs
= Fcons (Fcons (Qcminflt
, make_number (proc
.ki_rusage_ch
.ru_minflt
)), attrs
);
3196 attrs
= Fcons (Fcons (Qcmajflt
, make_number (proc
.ki_rusage_ch
.ru_majflt
)), attrs
);
3198 attrs
= Fcons (Fcons (Qutime
, make_lisp_timeval (proc
.ki_rusage
.ru_utime
)),
3200 attrs
= Fcons (Fcons (Qstime
, make_lisp_timeval (proc
.ki_rusage
.ru_stime
)),
3202 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_utime
),
3203 timeval_to_EMACS_TIME (proc
.ki_rusage
.ru_stime
));
3204 attrs
= Fcons (Fcons (Qtime
, make_lisp_time (t
)), attrs
);
3206 attrs
= Fcons (Fcons (Qcutime
,
3207 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3209 attrs
= Fcons (Fcons (Qcstime
,
3210 make_lisp_timeval (proc
.ki_rusage_ch
.ru_utime
)),
3212 t
= add_emacs_time (timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_utime
),
3213 timeval_to_EMACS_TIME (proc
.ki_rusage_ch
.ru_stime
));
3214 attrs
= Fcons (Fcons (Qctime
, make_lisp_time (t
)), attrs
);
3216 attrs
= Fcons (Fcons (Qthcount
, make_fixnum_or_float (proc
.ki_numthreads
)),
3218 attrs
= Fcons (Fcons (Qpri
, make_number (proc
.ki_pri
.pri_native
)), attrs
);
3219 attrs
= Fcons (Fcons (Qnice
, make_number (proc
.ki_nice
)), attrs
);
3220 attrs
= Fcons (Fcons (Qstart
, make_lisp_timeval (proc
.ki_start
)), attrs
);
3221 attrs
= Fcons (Fcons (Qvsize
, make_number (proc
.ki_size
>> 10)), attrs
);
3222 attrs
= Fcons (Fcons (Qrss
, make_number (proc
.ki_rssize
* pagesize
>> 10)),
3225 now
= current_emacs_time ();
3226 t
= sub_emacs_time (now
, timeval_to_EMACS_TIME (proc
.ki_start
));
3227 attrs
= Fcons (Fcons (Qetime
, make_lisp_time (t
)), attrs
);
3229 len
= sizeof fscale
;
3230 if (sysctlbyname ("kern.fscale", &fscale
, &len
, NULL
, 0) == 0)
3235 if (sysctlbyname ("kern.ccpu", &ccpu
, &len
, NULL
, 0) == 0)
3237 pcpu
= (100.0 * proc
.ki_pctcpu
/ fscale
3238 / (1 - exp (proc
.ki_swtime
* log ((double) ccpu
/ fscale
))));
3239 attrs
= Fcons (Fcons (Qpcpu
, make_fixnum_or_float (pcpu
)), attrs
);
3243 len
= sizeof npages
;
3244 if (sysctlbyname ("hw.availpages", &npages
, &len
, NULL
, 0) == 0)
3246 double pmem
= (proc
.ki_flag
& P_INMEM
3247 ? 100.0 * proc
.ki_rssize
/ npages
3249 attrs
= Fcons (Fcons (Qpmem
, make_fixnum_or_float (pmem
)), attrs
);
3252 mib
[2] = KERN_PROC_ARGS
;
3254 if (sysctl (mib
, 4, args
, &len
, NULL
, 0) == 0)
3257 for (i
= 0; i
< len
; i
++)
3259 if (! args
[i
] && i
< len
- 1)
3264 (code_convert_string_norecord
3265 (build_unibyte_string (args
),
3266 Vlocale_coding_system
, 0));
3268 attrs
= Fcons (Fcons (Qargs
, decoded_comm
), attrs
);
3275 /* The WINDOWSNT implementation is in w32.c.
3276 The MSDOS implementation is in dosfns.c. */
3277 #elif !defined (WINDOWSNT) && !defined (MSDOS)
3280 system_process_attributes (Lisp_Object pid
)
3285 #endif /* !defined (WINDOWSNT) */