1 /* Asynchronous subprocess control for XEmacs.
2 Copyright (C) 1985, 1986, 1987, 1988, 1992, 1993, 1994, 1995
3 Free Software Foundation, Inc.
4 Copyright (C) 1995 Sun Microsystems, Inc.
5 Copyright (C) 1995, 1996 Ben Wing.
7 This file is part of XEmacs.
9 XEmacs is free software; you can redistribute it and/or modify it
10 under the terms of the GNU General Public License as published by the
11 Free Software Foundation; either version 2, or (at your option) any
14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with XEmacs; see the file COPYING. If not, write to
21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
24 /* This file has been Mule-ized except for `start-process-internal',
25 `open-network-stream-internal' and `open-multicast-group-internal'. */
27 /* This file has been split into process.c and process-unix.c by
28 Kirill M. Katsnelson <kkm@kis.ru>, so please bash him and not
29 the original author(s) */
33 #if !defined (NO_SUBPROCESSES)
35 /* The entire file is within this conditional */
51 #include "file-coding.h"
57 #include "syssignal.h" /* Always include before systty.h */
61 Lisp_Object Qprocessp, Qprocess_live_p;
64 struct process_methods the_process_methods;
66 /* a process object is a network connection when its pid field a cons
67 (name of name of port we are connected to . foreign host name) */
69 /* Valid values of process->status_symbol */
70 Lisp_Object Qrun, Qstop;
71 /* Qrun => Qopen, Qexit => Qclosed for "network connection" processes */
72 Lisp_Object Qopen, Qclosed;
73 /* Protocol families */
74 Lisp_Object Qtcp, Qudp;
77 Lisp_Object Qmulticast; /* Will be used for occasional warnings */
80 /* t means use pty, nil means use a pipe,
81 maybe other values to come. */
82 Lisp_Object Vprocess_connection_type;
84 /* Read comments to DEFVAR of this */
85 int windowed_process_io;
87 #ifdef PROCESS_IO_BLOCKING
88 /* List of port numbers or port names to set a blocking I/O mode.
89 Nil means set a non-blocking I/O mode [default]. */
90 Lisp_Object network_stream_blocking_port_list;
91 #endif /* PROCESS_IO_BLOCKING */
93 /* Number of events of change of status of a process. */
94 volatile int process_tick;
96 /* Number of events for which the user or sentinel has been notified. */
97 static int update_tick;
99 /* Nonzero means delete a process right away if it exits. */
100 int delete_exited_processes;
102 /* Hash table which maps USIDs as returned by create_stream_pair_cb to
103 process objects. Processes are not GC-protected through this! */
104 struct hash_table *usid_to_process;
106 /* List of process objects. */
107 Lisp_Object Vprocess_list;
109 extern Lisp_Object Vlisp_EXEC_SUFFIXES;
114 mark_process (Lisp_Object obj)
116 Lisp_Process *proc = XPROCESS (obj);
117 MAYBE_PROCMETH (mark_process_data, (proc));
118 mark_object (proc->name);
119 mark_object (proc->command);
120 mark_object (proc->filter);
121 mark_object (proc->sentinel);
122 mark_object (proc->buffer);
123 mark_object (proc->mark);
124 mark_object (proc->pid);
125 mark_object (proc->pipe_instream);
126 mark_object (proc->pipe_outstream);
128 mark_object (proc->coding_instream);
129 mark_object (proc->coding_outstream);
131 return proc->status_symbol;
135 print_process (Lisp_Object obj, Lisp_Object printcharfun, int escapeflag)
137 Lisp_Process *proc = XPROCESS (obj);
140 error ("printing unreadable object #<process %s>",
141 XSTRING_DATA (proc->name));
145 print_internal (proc->name, printcharfun, 0);
149 int netp = network_connection_p (obj);
150 write_c_string ((netp ? GETTEXT ("#<network connection ") :
151 GETTEXT ("#<process ")), printcharfun);
152 print_internal (proc->name, printcharfun, 1);
153 write_c_string ((netp ? " " : " pid "), printcharfun);
154 print_internal (proc->pid, printcharfun, 1);
155 write_c_string (" state:", printcharfun);
156 print_internal (proc->status_symbol, printcharfun, 1);
157 MAYBE_PROCMETH (print_process_data, (proc, printcharfun));
158 write_c_string (">", printcharfun);
162 #ifdef HAVE_WINDOW_SYSTEM
163 extern void debug_process_finalization (Lisp_Process *p);
164 #endif /* HAVE_WINDOW_SYSTEM */
167 finalize_process (void *header, int for_disksave)
169 /* #### this probably needs to be tied into the tty event loop */
170 /* #### when there is one */
171 Lisp_Process *p = (Lisp_Process *) header;
172 #ifdef HAVE_WINDOW_SYSTEM
175 debug_process_finalization (p);
177 #endif /* HAVE_WINDOW_SYSTEM */
181 MAYBE_PROCMETH (finalize_process_data, (p, for_disksave));
183 xfree (p->process_data);
187 DEFINE_LRECORD_IMPLEMENTATION ("process", process,
188 mark_process, print_process, finalize_process,
189 0, 0, 0, Lisp_Process);
191 /************************************************************************/
192 /* basic process accessors */
193 /************************************************************************/
195 /* Under FILE_CODING, this function returns low-level streams, connected
196 directly to the child process, rather than en/decoding FILE_CODING
199 get_process_streams (Lisp_Process *p, Lisp_Object *instr, Lisp_Object *outstr)
202 assert (NILP (p->pipe_instream) || LSTREAMP(p->pipe_instream));
203 assert (NILP (p->pipe_outstream) || LSTREAMP(p->pipe_outstream));
204 *instr = p->pipe_instream;
205 *outstr = p->pipe_outstream;
209 get_process_from_usid (USID usid)
213 assert (usid != USID_ERROR && usid != USID_DONTHASH);
215 if (gethash ((const void*)usid, usid_to_process, &vval))
218 CVOID_TO_LISP (proc, vval);
219 return XPROCESS (proc);
226 get_process_selected_p (Lisp_Process *p)
232 set_process_selected_p (Lisp_Process *p, int selected_p)
234 p->selected = !!selected_p;
238 connected_via_filedesc_p (Lisp_Process *p)
240 return MAYBE_INT_PROCMETH (tooltalk_connection_p, (p));
245 network_connection_p (Lisp_Object process)
247 return CONSP (XPROCESS (process)->pid);
251 DEFUN ("processp", Fprocessp, 1, 1, 0, /*
252 Return t if OBJECT is a process.
256 return PROCESSP (obj) ? Qt : Qnil;
259 DEFUN ("process-live-p", Fprocess_live_p, 1, 1, 0, /*
260 Return t if OBJECT is a process that is alive.
264 return PROCESSP (obj) && PROCESS_LIVE_P (XPROCESS (obj)) ? Qt : Qnil;
267 DEFUN ("process-list", Fprocess_list, 0, 0, 0, /*
268 Return a list of all processes.
272 return Fcopy_sequence (Vprocess_list);
275 DEFUN ("get-process", Fget_process, 1, 1, 0, /*
276 Return the process named NAME, or nil if there is none.
286 /* this only gets called during GC when emacs is going away as a result
287 of a signal or crash. */
290 for (tail = Vprocess_list; CONSP (tail); tail = XCDR (tail))
292 Lisp_Object proc = XCAR (tail);
294 if (internal_equal (name, XPROCESS (proc)->name, 0))
300 DEFUN ("get-buffer-process", Fget_buffer_process, 1, 1, 0, /*
301 Return the (or, a) process associated with BUFFER.
302 BUFFER may be a buffer or the name of one.
306 Lisp_Object buf, tail, proc;
308 if (NILP (name)) return Qnil;
309 buf = Fget_buffer (name);
310 if (NILP (buf)) return Qnil;
312 for (tail = Vprocess_list; CONSP (tail); tail = XCDR (tail))
314 /* jwz: do not quit here - it isn't necessary, as there is no way for
315 Vprocess_list to get circular or overwhelmingly long, and this
316 function is called from layout_mode_element under redisplay. */
319 if (PROCESSP (proc) && EQ (XPROCESS (proc)->buffer, buf))
325 /* This is how commands for the user decode process arguments. It
326 accepts a process, a process name, a buffer, a buffer name, or nil.
327 Buffers denote the first process in the buffer, and nil denotes the
331 get_process (Lisp_Object name)
333 Lisp_Object proc, obj;
336 /* #### Look more closely into translating process names. */
339 /* This may be called during a GC from process_send_signal() from
340 kill_buffer_processes() if emacs decides to abort(). */
346 obj = Fget_process (name);
348 obj = Fget_buffer (name);
350 error ("Process %s does not exist", XSTRING_DATA (name));
352 else if (NILP (name))
353 obj = Fcurrent_buffer ();
357 /* Now obj should be either a buffer object or a process object.
361 proc = Fget_buffer_process (obj);
363 error ("Buffer %s has no process", XSTRING_DATA (XBUFFER(obj)->name));
367 /* #### This was commented out. Although, simple
368 (kill-process 7 "qqq") resulted in a fatal error. - kkm */
375 DEFUN ("process-id", Fprocess_id, 1, 1, 0, /*
376 Return the process id of PROCESS.
377 This is the pid of the Unix process which PROCESS uses or talks to.
378 For a network connection, this value is a cons of
379 (foreign-network-port . foreign-host-name).
384 CHECK_PROCESS (proc);
386 pid = XPROCESS (proc)->pid;
387 if (network_connection_p (proc))
389 return Fcons (Fcar (pid), Fcdr (pid));
394 DEFUN ("process-name", Fprocess_name, 1, 1, 0, /*
395 Return the name of PROCESS, as a string.
396 This is the name of the program invoked in PROCESS,
397 possibly modified to make it unique among process names.
401 CHECK_PROCESS (proc);
402 return XPROCESS (proc)->name;
405 DEFUN ("process-command", Fprocess_command, 1, 1, 0, /*
406 Return the command that was executed to start PROCESS.
407 This is a list of strings, the first string being the program executed
408 and the rest of the strings being the arguments given to it.
412 CHECK_PROCESS (proc);
413 return XPROCESS (proc)->command;
417 /************************************************************************/
418 /* creating a process */
419 /************************************************************************/
422 make_process_internal (Lisp_Object name)
424 Lisp_Object val, name1;
426 Lisp_Process *p = alloc_lcrecord_type (Lisp_Process, &lrecord_process);
428 /* If name is already in use, modify it until it is unused. */
433 Lisp_Object tem = Fget_process (name1);
436 sprintf (suffix, "<%d>", i);
437 name1 = concat2 (name, build_string (suffix));
446 p->mark = Fmake_marker ();
448 p->status_symbol = Qrun;
451 p->filter_does_read = 0;
452 p->kill_without_query = 0;
456 p->pipe_instream = Qnil;
457 p->pipe_outstream = Qnil;
459 p->coding_instream = Qnil;
460 p->coding_outstream = Qnil;
464 MAYBE_PROCMETH (alloc_process_data, (p));
466 XSETPROCESS (val, p);
468 Vprocess_list = Fcons (val, Vprocess_list);
473 init_process_io_handles (Lisp_Process *p, void* in, void* out, int flags)
475 USID usid = event_stream_create_stream_pair (in, out,
476 &p->pipe_instream, &p->pipe_outstream,
479 if (usid == USID_ERROR)
480 report_file_error ("Setting up communication with subprocess", Qnil);
482 if (usid != USID_DONTHASH)
484 Lisp_Object proc = Qnil;
485 XSETPROCESS (proc, p);
486 puthash ((const void*)usid, LISP_TO_VOID (proc), usid_to_process);
489 MAYBE_PROCMETH (init_process_io_handles, (p, in, out, flags));
492 p->coding_instream = make_decoding_input_stream
493 (XLSTREAM (p->pipe_instream),
494 Fget_coding_system (Vcoding_system_for_read));
495 Lstream_set_character_mode (XLSTREAM (p->coding_instream));
496 p->coding_outstream = make_encoding_output_stream
497 (XLSTREAM (p->pipe_outstream),
498 Fget_coding_system (Vcoding_system_for_write));
499 /* CODE_CNTL (&out_state[outchannel]) |= CC_END; !!####
500 What's going on here? */
501 #endif /* FILE_CODING */
505 create_process (Lisp_Object process, Lisp_Object *argv, int nargv,
506 Lisp_Object program, Lisp_Object cur_dir)
508 Lisp_Process *p = XPROCESS (process);
511 /* *_create_process may change status_symbol, if the process
512 is a kind of "fire-and-forget" (no I/O, unwaitable) */
513 p->status_symbol = Qrun;
516 pid = PROCMETH (create_process, (p, argv, nargv, program, cur_dir));
518 p->pid = make_int (pid);
519 if (PROCESS_LIVE_P (p))
520 event_stream_select_process (p);
523 /* This function is the unwind_protect form for Fstart_process_internal. If
524 PROC doesn't have its pid set, then we know someone has signalled
525 an error and the process wasn't started successfully, so we should
526 remove it from the process list. */
527 static void remove_process (Lisp_Object proc);
529 start_process_unwind (Lisp_Object proc)
531 /* Was PROC started successfully? */
532 if (EQ (XPROCESS (proc)->pid, Qnil))
533 remove_process (proc);
537 DEFUN ("start-process-internal", Fstart_process_internal, 3, MANY, 0, /*
538 Start a program in a subprocess. Return the process object for it.
539 Args are NAME BUFFER PROGRAM &rest PROGRAM-ARGS
540 NAME is name for process. It is modified if necessary to make it unique.
541 BUFFER is the buffer or (buffer-name) to associate with the process.
542 Process output goes at end of that buffer, unless you specify
543 an output stream or filter function to handle the output.
544 BUFFER may be also nil, meaning that this process is not associated
546 Third arg is program file name. It is searched for as in the shell.
547 Remaining arguments are strings to give program as arguments.
548 INCODE and OUTCODE specify the coding-system objects used in input/output
551 (int nargs, Lisp_Object *args))
553 /* This function can call lisp */
554 /* !!#### This function has not been Mule-ized */
555 Lisp_Object buffer, name, program, proc, current_dir;
557 int speccount = specpdl_depth ();
558 struct gcpro gcpro1, gcpro2, gcpro3;
565 /* Protect against various file handlers doing GCs below. */
566 GCPRO3 (buffer, program, current_dir);
569 buffer = Fget_buffer_create (buffer);
572 CHECK_STRING (program);
574 /* Make sure that the child will be able to chdir to the current
575 buffer's current directory, or its unhandled equivalent. We
576 can't just have the child check for an error when it does the
577 chdir, since it's in a vfork.
579 Note: these assignments and calls are like this in order to insure
580 "caller protects args" GC semantics. */
581 current_dir = current_buffer->directory;
582 current_dir = Funhandled_file_name_directory (current_dir);
583 current_dir = expand_and_dir_to_file (current_dir, Qnil);
585 #if 0 /* This loser breaks ange-ftp */
586 /* dmoore - if you re-enable this code, you have to gcprotect
587 current_buffer through the above calls. */
588 if (NILP (Ffile_accessible_directory_p (current_dir)))
589 report_file_error ("Setting current directory",
590 list1 (current_buffer->directory));
593 /* If program file name is not absolute, search our path for it */
594 if (!IS_DIRECTORY_SEP (XSTRING_BYTE (program, 0))
595 && !(XSTRING_LENGTH (program) > 1
596 && IS_DEVICE_SEP (XSTRING_BYTE (program, 1))))
598 struct gcpro ngcpro1;
602 locate_file (Vexec_path, program, Vlisp_EXEC_SUFFIXES, &tem, X_OK);
604 report_file_error ("Searching for program", list1 (program));
605 program = Fexpand_file_name (tem, Qnil);
610 if (!NILP (Ffile_directory_p (program)))
611 error ("Specified program for new process is a directory");
614 proc = make_process_internal (name);
616 XPROCESS (proc)->buffer = buffer;
617 XPROCESS (proc)->command = Flist (nargs - 2,
620 /* Make the process marker point into the process buffer (if any). */
622 Fset_marker (XPROCESS (proc)->mark,
623 make_int (BUF_ZV (XBUFFER (buffer))), buffer);
625 /* If an error occurs and we can't start the process, we want to
626 remove it from the process list. This means that each error
627 check in create_process doesn't need to call remove_process
628 itself; it's all taken care of here. */
629 record_unwind_protect (start_process_unwind, proc);
631 create_process (proc, args + 3, nargs - 3, program, current_dir);
634 return unbind_to (speccount, proc);
641 /* #### The network support is fairly synthetical. What we actually
642 need is a single function, which supports all datagram, stream and
643 packet stream connections, arbitrary protocol families should they
644 be supported by the target system, multicast groups, in both data
645 and control rooted/nonrooted flavors, service quality etc whatever
646 is supported by the underlying network.
648 It must accept a property list describing the connection. The current
649 functions must then go to lisp and provide a suitable list for the
650 generalized connection function.
652 Both UNIX and Win32 support BSD sockets, and there are many extensions
653 available (Sockets 2 spec).
655 A todo is define a consistent set of properties abstracting a
656 network connection. -kkm
660 /* open a TCP network connection to a given HOST/SERVICE. Treated
661 exactly like a normal process when reading and writing. Only
662 differences are in status display and process deletion. A network
663 connection has no PID; you cannot signal it. All you can do is
664 deactivate and close it via delete-process */
666 DEFUN ("open-network-stream-internal", Fopen_network_stream_internal, 4, 5, 0, /*
667 Open a TCP connection for a service to a host.
668 Return a subprocess-object to represent the connection.
669 Input and output work as for subprocesses; `delete-process' closes it.
671 NAME is name for process. It is modified if necessary to make it unique.
672 BUFFER is the buffer (or buffer-name) to associate with the process.
673 Process output goes at end of that buffer, unless you specify
674 an output stream or filter function to handle the output.
675 BUFFER may also be nil, meaning that this process is not associated
677 Third arg is name of the host to connect to, or its IP address.
678 Fourth arg SERVICE is name of the service desired, or an integer
679 specifying a port number to connect to.
680 Fifth argument PROTOCOL is a network protocol. Currently 'tcp
681 (Transmission Control Protocol) and 'udp (User Datagram Protocol) are
682 supported. When omitted, 'tcp is assumed.
684 Ouput via `process-send-string' and input via buffer or filter (see
685 `set-process-filter') are stream-oriented. That means UDP datagrams are
686 not guaranteed to be sent and received in discrete packets. (But small
687 datagrams around 500 bytes that are not truncated by `process-send-string'
688 are usually fine.) Note further that UDP protocol does not guard against
691 (name, buffer, host, service, protocol))
693 /* !!#### This function has not been Mule-ized */
694 /* This function can GC */
695 Lisp_Object proc = Qnil;
696 struct gcpro gcpro1, gcpro2, gcpro3, gcpro4, gcpro5, ngcpro1;
699 GCPRO5 (name, buffer, host, service, protocol);
705 CHECK_SYMBOL (protocol);
707 /* Since this code is inside HAVE_SOCKETS, existence of
708 open_network_stream is mandatory */
709 PROCMETH (open_network_stream, (name, host, service, protocol,
713 buffer = Fget_buffer_create (buffer);
714 proc = make_process_internal (name);
717 XPROCESS (proc)->pid = Fcons (service, host);
718 XPROCESS (proc)->buffer = buffer;
719 init_process_io_handles (XPROCESS (proc), (void*)inch, (void*)outch,
720 STREAM_NETWORK_CONNECTION);
722 event_stream_select_process (XPROCESS (proc));
729 #ifdef HAVE_MULTICAST
731 DEFUN ("open-multicast-group-internal", Fopen_multicast_group_internal, 5, 5, 0, /*
732 Open a multicast connection on the specified dest/port/ttl.
733 Return a subprocess-object to represent the connection.
734 Input and output work as for subprocesses; `delete-process' closes it.
736 NAME is name for process. It is modified if necessary to make it unique.
737 BUFFER is the buffer (or buffer-name) to associate with the process.
738 Process output goes at end of that buffer, unless you specify
739 an output stream or filter function to handle the output.
740 BUFFER may also be nil, meaning that this process is not associated
742 Third, fourth and fifth args are the multicast destination group, port and ttl.
743 dest must be an internet address between 224.0.0.0 and 239.255.255.255
744 port is a communication port like in traditional unicast
745 ttl is the time-to-live (15 for site, 63 for region and 127 for world)
747 (name, buffer, dest, port, ttl))
749 /* !!#### This function has not been Mule-ized */
750 /* This function can GC */
751 Lisp_Object proc = Qnil;
757 /* Since this code is inside HAVE_MULTICAST, existence of
758 open_network_stream is mandatory */
759 PROCMETH (open_multicast_group, (name, dest, port, ttl,
763 buffer = Fget_buffer_create (buffer);
765 proc = make_process_internal (name);
768 XPROCESS (proc)->pid = Fcons (port, dest);
769 XPROCESS (proc)->buffer = buffer;
770 init_process_io_handles (XPROCESS (proc), (void*)inch, (void*)outch,
771 STREAM_NETWORK_CONNECTION);
773 event_stream_select_process (XPROCESS (proc));
778 #endif /* HAVE_MULTICAST */
780 #endif /* HAVE_SOCKETS */
783 canonicalize_host_name (Lisp_Object host)
785 return PROCMETH_OR_GIVEN (canonicalize_host_name, (host), host);
789 DEFUN ("set-process-window-size", Fset_process_window_size, 3, 3, 0, /*
790 Tell PROCESS that it has logical window size HEIGHT and WIDTH.
792 (proc, height, width))
794 CHECK_PROCESS (proc);
795 CHECK_NATNUM (height);
796 CHECK_NATNUM (width);
798 MAYBE_INT_PROCMETH (set_window_size, (XPROCESS (proc), XINT (height), XINT (width))) <= 0
803 /************************************************************************/
805 /************************************************************************/
807 /* Read pending output from the process channel,
808 starting with our buffered-ahead character if we have one.
809 Yield number of characters read.
811 This function reads at most 1024 bytes.
812 If you want to read all available subprocess output,
813 you must call it repeatedly until it returns zero. */
816 read_process_output (Lisp_Object proc)
818 /* This function can GC */
819 Bytecount nbytes, nchars;
821 Lisp_Object outstream;
822 Lisp_Process *p = XPROCESS (proc);
824 /* If there is a lot of output from the subprocess, the loop in
825 execute_internal_event() might call read_process_output() more
826 than once. If the filter that was executed from one of these
827 calls set the filter to t, we have to stop now. Return -1 rather
828 than 0 so execute_internal_event() doesn't close the process.
829 Really, the loop in execute_internal_event() should check itself
830 for a process-filter change, like in status_notify(); but the
831 struct Lisp_Process is not exported outside of this file. */
832 if (!PROCESS_LIVE_P (p))
833 return -1; /* already closed */
835 if (!NILP (p->filter) && (p->filter_does_read))
837 Lisp_Object filter_result;
839 /* Some weird FSFmacs crap here with
840 Vdeactivate_mark and current_buffer->keymap */
841 running_asynch_code = 1;
842 filter_result = call2_trapping_errors ("Error in process filter",
843 p->filter, proc, Qnil);
844 running_asynch_code = 0;
845 restore_match_data ();
846 CHECK_INT (filter_result);
847 return XINT (filter_result);
850 nbytes = Lstream_read (XLSTREAM (DATA_INSTREAM(p)), chars, sizeof (chars));
851 if (nbytes <= 0) return nbytes;
853 nchars = bytecount_to_charcount (chars, nbytes);
854 outstream = p->filter;
855 if (!NILP (outstream))
857 /* We used to bind inhibit-quit to t here, but
858 call2_trapping_errors() does that for us. */
859 running_asynch_code = 1;
860 call2_trapping_errors ("Error in process filter",
861 outstream, proc, make_string (chars, nbytes));
862 running_asynch_code = 0;
863 restore_match_data ();
867 /* If no filter, write into buffer if it isn't dead. */
868 if (!NILP (p->buffer) && BUFFER_LIVE_P (XBUFFER (p->buffer)))
870 Lisp_Object old_read_only = Qnil;
874 int old_zmacs_region_stays = zmacs_region_stays;
875 struct gcpro gcpro1, gcpro2;
876 struct buffer *buf = XBUFFER (p->buffer);
878 GCPRO2 (proc, old_read_only);
880 old_point = BUF_PT (buf);
881 old_begv = BUF_BEGV (buf);
882 old_zv = BUF_ZV (buf);
883 old_read_only = buf->read_only;
884 buf->read_only = Qnil;
886 /* Insert new output into buffer
887 at the current end-of-output marker,
888 thus preserving logical ordering of input and output. */
889 if (XMARKER (p->mark)->buffer)
891 bufpos_clip_to_bounds (old_begv, marker_position (p->mark),
894 BUF_SET_PT (buf, old_zv);
896 /* If the output marker is outside of the visible region, save
897 the restriction and widen. */
898 if (! (BUF_BEGV (buf) <= BUF_PT (buf) &&
899 BUF_PT (buf) <= BUF_ZV (buf)))
902 /* Make sure opoint floats ahead of any new text, just as point
904 if (BUF_PT (buf) <= old_point)
907 /* Insert after old_begv, but before old_zv. */
908 if (BUF_PT (buf) < old_begv)
910 if (BUF_PT (buf) <= old_zv)
914 /* This screws up initial display of the window. jla */
916 /* Insert before markers in case we are inserting where
917 the buffer's mark is, and the user's next command is Meta-y. */
918 buffer_insert_raw_string_1 (buf, -1, chars,
919 nbytes, INSDEL_BEFORE_MARKERS);
921 buffer_insert_raw_string (buf, chars, nbytes);
924 Fset_marker (p->mark, make_int (BUF_PT (buf)), p->buffer);
926 MARK_MODELINE_CHANGED;
928 /* If the restriction isn't what it should be, set it. */
929 if (old_begv != BUF_BEGV (buf) || old_zv != BUF_ZV (buf))
932 old_begv = bufpos_clip_to_bounds (BUF_BEG (buf),
935 old_zv = bufpos_clip_to_bounds (BUF_BEG (buf),
938 Fnarrow_to_region (make_int (old_begv), make_int (old_zv),
942 /* Handling the process output should not deactivate the mark. */
943 zmacs_region_stays = old_zmacs_region_stays;
944 buf->read_only = old_read_only;
945 old_point = bufpos_clip_to_bounds (BUF_BEGV (buf),
948 BUF_SET_PT (buf, old_point);
955 /* Sending data to subprocess */
957 /* send some data to process PROC. If NONRELOCATABLE is non-NULL, it
958 specifies the address of the data. Otherwise, the data comes from the
959 object RELOCATABLE (either a string or a buffer). START and LEN
960 specify the offset and length of the data to send.
962 Note that START and LEN are in Bufpos's if RELOCATABLE is a buffer,
963 and in Bytecounts otherwise. */
966 send_process (Lisp_Object proc,
967 Lisp_Object relocatable, const Bufbyte *nonrelocatable,
970 /* This function can GC */
971 struct gcpro gcpro1, gcpro2;
972 Lisp_Object lstream = Qnil;
974 GCPRO2 (proc, lstream);
976 if (NILP (DATA_OUTSTREAM (XPROCESS (proc))))
977 signal_simple_error ("Process not open for writing", proc);
981 make_fixed_buffer_input_stream (nonrelocatable + start, len);
982 else if (BUFFERP (relocatable))
983 lstream = make_lisp_buffer_input_stream (XBUFFER (relocatable),
984 start, start + len, 0);
986 lstream = make_lisp_string_input_stream (relocatable, start, len);
988 PROCMETH (send_process, (proc, XLSTREAM (lstream)));
991 Lstream_delete (XLSTREAM (lstream));
994 DEFUN ("process-tty-name", Fprocess_tty_name, 1, 1, 0, /*
995 Return the name of the terminal PROCESS uses, or nil if none.
996 This is the terminal that the process itself reads and writes on,
997 not the name of the pty that Emacs uses to talk with that terminal.
1001 CHECK_PROCESS (proc);
1002 return MAYBE_LISP_PROCMETH (get_tty_name, (XPROCESS (proc)));
1005 DEFUN ("set-process-buffer", Fset_process_buffer, 2, 2, 0, /*
1006 Set buffer associated with PROCESS to BUFFER (a buffer, or nil).
1010 CHECK_PROCESS (proc);
1012 CHECK_BUFFER (buffer);
1013 XPROCESS (proc)->buffer = buffer;
1017 DEFUN ("process-buffer", Fprocess_buffer, 1, 1, 0, /*
1018 Return the buffer PROCESS is associated with.
1019 Output from PROCESS is inserted in this buffer
1020 unless PROCESS has a filter.
1024 CHECK_PROCESS (proc);
1025 return XPROCESS (proc)->buffer;
1028 DEFUN ("process-mark", Fprocess_mark, 1, 1, 0, /*
1029 Return the marker for the end of the last output from PROCESS.
1033 CHECK_PROCESS (proc);
1034 return XPROCESS (proc)->mark;
1038 set_process_filter (Lisp_Object proc, Lisp_Object filter, int filter_does_read)
1040 CHECK_PROCESS (proc);
1041 if (PROCESS_LIVE_P (XPROCESS (proc))) {
1042 if (EQ (filter, Qt))
1043 event_stream_unselect_process (XPROCESS (proc));
1045 event_stream_select_process (XPROCESS (proc));
1048 XPROCESS (proc)->filter = filter;
1049 XPROCESS (proc)->filter_does_read = filter_does_read;
1052 DEFUN ("set-process-filter", Fset_process_filter, 2, 2, 0, /*
1053 Give PROCESS the filter function FILTER; nil means no filter.
1054 t means stop accepting output from the process.
1055 When a process has a filter, each time it does output
1056 the entire string of output is passed to the filter.
1057 The filter gets two arguments: the process and the string of output.
1058 If the process has a filter, its buffer is not used for output.
1062 set_process_filter (proc, filter, 0);
1066 DEFUN ("process-filter", Fprocess_filter, 1, 1, 0, /*
1067 Return the filter function of PROCESS; nil if none.
1068 See `set-process-filter' for more info on filter functions.
1072 CHECK_PROCESS (proc);
1073 return XPROCESS (proc)->filter;
1076 DEFUN ("process-send-region", Fprocess_send_region, 3, 3, 0, /*
1077 Send current contents of region as input to PROCESS.
1078 PROCESS may be a process name or an actual process.
1079 Called from program, takes three arguments, PROCESS, START and END.
1080 If the region is more than 500 or so characters long,
1081 it is sent in several bunches. This may happen even for shorter regions.
1082 Output from processes can arrive in between bunches.
1084 (process, start, end))
1086 /* This function can GC */
1087 Lisp_Object proc = get_process (process);
1090 get_buffer_range_char (current_buffer, start, end, &st, &en, 0);
1092 send_process (proc, Fcurrent_buffer (), 0,
1097 DEFUN ("process-send-string", Fprocess_send_string, 2, 4, 0, /*
1098 Send PROCESS the contents of STRING as input.
1099 PROCESS may be a process name or an actual process.
1100 Optional arguments FROM and TO specify part of STRING, see `substring'.
1101 If STRING is more than 500 or so characters long,
1102 it is sent in several bunches. This may happen even for shorter strings.
1103 Output from processes can arrive in between bunches.
1105 (process, string, from, to))
1107 /* This function can GC */
1112 proc = get_process (process);
1113 CHECK_STRING (string);
1114 get_string_range_byte (string, from, to, &bfr, &bto,
1115 GB_HISTORICAL_STRING_BEHAVIOR);
1118 send_process (proc, string, 0, bfr, len);
1124 DEFUN ("process-input-coding-system", Fprocess_input_coding_system, 1, 1, 0, /*
1125 Return PROCESS's input coding system.
1129 process = get_process (process);
1130 CHECK_LIVE_PROCESS (process);
1131 return decoding_stream_coding_system (XLSTREAM (XPROCESS (process)->coding_instream) );
1134 DEFUN ("process-output-coding-system", Fprocess_output_coding_system, 1, 1, 0, /*
1135 Return PROCESS's output coding system.
1139 process = get_process (process);
1140 CHECK_LIVE_PROCESS (process);
1141 return encoding_stream_coding_system (XLSTREAM (XPROCESS (process)->coding_outstream));
1144 DEFUN ("process-coding-system", Fprocess_coding_system, 1, 1, 0, /*
1145 Return a pair of coding-system for decoding and encoding of PROCESS.
1149 process = get_process (process);
1150 CHECK_LIVE_PROCESS (process);
1151 return Fcons (decoding_stream_coding_system
1152 (XLSTREAM (XPROCESS (process)->coding_instream)),
1153 encoding_stream_coding_system
1154 (XLSTREAM (XPROCESS (process)->coding_outstream)));
1157 DEFUN ("set-process-input-coding-system", Fset_process_input_coding_system,
1159 Set PROCESS's input coding system to CODESYS.
1163 codesys = Fget_coding_system (codesys);
1164 process = get_process (process);
1165 CHECK_LIVE_PROCESS (process);
1167 set_decoding_stream_coding_system
1168 (XLSTREAM (XPROCESS (process)->coding_instream), codesys);
1172 DEFUN ("set-process-output-coding-system", Fset_process_output_coding_system,
1174 Set PROCESS's output coding system to CODESYS.
1178 codesys = Fget_coding_system (codesys);
1179 process = get_process (process);
1180 CHECK_LIVE_PROCESS (process);
1182 set_encoding_stream_coding_system
1183 (XLSTREAM (XPROCESS (process)->coding_outstream), codesys);
1187 DEFUN ("set-process-coding-system", Fset_process_coding_system,
1189 Set coding-systems of PROCESS to DECODING and ENCODING.
1190 DECODING will be used to decode subprocess output and ENCODING to
1191 encode subprocess input.
1193 (process, decoding, encoding))
1195 if (!NILP (decoding))
1196 Fset_process_input_coding_system (process, decoding);
1198 if (!NILP (encoding))
1199 Fset_process_output_coding_system (process, encoding);
1204 #endif /* FILE_CODING */
1206 /************************************************************************/
1207 /* process status */
1208 /************************************************************************/
1211 exec_sentinel_unwind (Lisp_Object datum)
1213 Lisp_Cons *d = XCONS (datum);
1214 XPROCESS (d->car)->sentinel = d->cdr;
1220 exec_sentinel (Lisp_Object proc, Lisp_Object reason)
1222 /* This function can GC */
1223 int speccount = specpdl_depth ();
1224 Lisp_Process *p = XPROCESS (proc);
1225 Lisp_Object sentinel = p->sentinel;
1227 if (NILP (sentinel))
1230 /* Some weird FSFmacs crap here with
1231 Vdeactivate_mark and current_buffer->keymap */
1233 /* Zilch the sentinel while it's running, to avoid recursive invocations;
1234 assure that it gets restored no matter how the sentinel exits. */
1236 record_unwind_protect (exec_sentinel_unwind, noseeum_cons (proc, sentinel));
1237 /* We used to bind inhibit-quit to t here, but call2_trapping_errors()
1238 does that for us. */
1239 running_asynch_code = 1;
1240 call2_trapping_errors ("Error in process sentinel", sentinel, proc, reason);
1241 running_asynch_code = 0;
1242 restore_match_data ();
1243 unbind_to (speccount, Qnil);
1246 DEFUN ("set-process-sentinel", Fset_process_sentinel, 2, 2, 0, /*
1247 Give PROCESS the sentinel SENTINEL; nil for none.
1248 The sentinel is called as a function when the process changes state.
1249 It gets two arguments: the process, and a string describing the change.
1253 CHECK_PROCESS (proc);
1254 XPROCESS (proc)->sentinel = sentinel;
1258 DEFUN ("process-sentinel", Fprocess_sentinel, 1, 1, 0, /*
1259 Return the sentinel of PROCESS; nil if none.
1260 See `set-process-sentinel' for more info on sentinels.
1264 CHECK_PROCESS (proc);
1265 return XPROCESS (proc)->sentinel;
1270 signal_name (int signum)
1272 if (signum >= 0 && signum < NSIG)
1273 return (const char *) sys_siglist[signum];
1275 return (const char *) GETTEXT ("unknown signal");
1279 update_process_status (Lisp_Object p,
1280 Lisp_Object status_symbol,
1284 XPROCESS (p)->tick++;
1286 XPROCESS (p)->status_symbol = status_symbol;
1287 XPROCESS (p)->exit_code = exit_code;
1288 XPROCESS (p)->core_dumped = core_dumped;
1291 /* Return a string describing a process status list. */
1294 status_message (Lisp_Process *p)
1296 Lisp_Object symbol = p->status_symbol;
1297 int code = p->exit_code;
1298 int coredump = p->core_dumped;
1299 Lisp_Object string, string2;
1301 if (EQ (symbol, Qsignal) || EQ (symbol, Qstop))
1303 string = build_string (signal_name (code));
1305 string2 = build_translated_string (" (core dumped)\n");
1307 string2 = build_string ("\n");
1308 set_string_char (XSTRING (string), 0,
1309 DOWNCASE (current_buffer,
1310 string_char (XSTRING (string), 0)));
1311 return concat2 (string, string2);
1313 else if (EQ (symbol, Qexit))
1316 return build_translated_string ("finished\n");
1317 string = Fnumber_to_string (make_int (code));
1319 string2 = build_translated_string (" (core dumped)\n");
1321 string2 = build_string ("\n");
1322 return concat2 (build_translated_string ("exited abnormally with code "),
1323 concat2 (string, string2));
1326 return Fcopy_sequence (Fsymbol_name (symbol));
1329 /* Tell status_notify() to check for terminated processes. We do this
1330 because on some systems we sometimes miss SIGCHLD calls. (Not sure
1334 kick_status_notify (void)
1340 /* Report all recent events of a change in process status
1341 (either run the sentinel or output a message).
1342 This is done while Emacs is waiting for keyboard input. */
1345 status_notify (void)
1347 /* This function can GC */
1348 Lisp_Object tail = Qnil;
1349 Lisp_Object symbol = Qnil;
1350 Lisp_Object msg = Qnil;
1351 struct gcpro gcpro1, gcpro2, gcpro3;
1352 /* process_tick is volatile, so we have to remember it now.
1353 Otherwise, we get a race condition is SIGCHLD happens during
1356 (Actually, this is not the case anymore. The code to
1357 update the process structures has been moved out of the
1358 SIGCHLD handler. But for the moment I'm leaving this
1359 stuff in -- it can't hurt.) */
1360 int temp_process_tick;
1362 MAYBE_PROCMETH (reap_exited_processes, ());
1364 temp_process_tick = process_tick;
1366 if (update_tick == temp_process_tick)
1369 /* We need to gcpro tail; if read_process_output calls a filter
1370 which deletes a process and removes the cons to which tail points
1371 from Vprocess_alist, and then causes a GC, tail is an unprotected
1373 GCPRO3 (tail, symbol, msg);
1375 for (tail = Vprocess_list; CONSP (tail); tail = XCDR (tail))
1377 Lisp_Object proc = XCAR (tail);
1378 Lisp_Process *p = XPROCESS (proc);
1379 /* p->tick is also volatile. Same thing as above applies. */
1380 int this_process_tick;
1382 /* #### extra check for terminated processes, in case a SIGCHLD
1383 got missed (this seems to happen sometimes, I'm not sure why).
1386 MAYBE_PROCMETH (update_status_if_terminated, (p));
1388 this_process_tick = p->tick;
1389 if (this_process_tick != p->update_tick)
1391 p->update_tick = this_process_tick;
1393 /* If process is still active, read any output that remains. */
1394 while (!EQ (p->filter, Qt)
1395 && read_process_output (proc) > 0)
1398 /* Get the text to use for the message. */
1399 msg = status_message (p);
1401 /* If process is terminated, deactivate it or delete it. */
1402 symbol = p->status_symbol;
1404 if (EQ (symbol, Qsignal)
1405 || EQ (symbol, Qexit))
1407 if (delete_exited_processes)
1408 remove_process (proc);
1410 deactivate_process (proc);
1413 /* Now output the message suitably. */
1414 if (!NILP (p->sentinel))
1415 exec_sentinel (proc, msg);
1416 /* Don't bother with a message in the buffer
1417 when a process becomes runnable. */
1418 else if (!EQ (symbol, Qrun) && !NILP (p->buffer))
1420 Lisp_Object old_read_only = Qnil;
1421 Lisp_Object old = Fcurrent_buffer ();
1423 struct gcpro ngcpro1, ngcpro2;
1425 /* Avoid error if buffer is deleted
1426 (probably that's why the process is dead, too) */
1427 if (!BUFFER_LIVE_P (XBUFFER (p->buffer)))
1430 NGCPRO2 (old, old_read_only);
1431 Fset_buffer (p->buffer);
1432 opoint = BUF_PT (current_buffer);
1433 /* Insert new output into buffer
1434 at the current end-of-output marker,
1435 thus preserving logical ordering of input and output. */
1436 if (XMARKER (p->mark)->buffer)
1437 BUF_SET_PT (current_buffer, marker_position (p->mark));
1439 BUF_SET_PT (current_buffer, BUF_ZV (current_buffer));
1440 if (BUF_PT (current_buffer) <= opoint)
1441 opoint += (string_char_length (XSTRING (msg))
1442 + string_char_length (XSTRING (p->name))
1445 old_read_only = current_buffer->read_only;
1446 current_buffer->read_only = Qnil;
1447 buffer_insert_c_string (current_buffer, "\nProcess ");
1448 Finsert (1, &p->name);
1449 buffer_insert_c_string (current_buffer, " ");
1451 current_buffer->read_only = old_read_only;
1452 Fset_marker (p->mark, make_int (BUF_PT (current_buffer)),
1455 opoint = bufpos_clip_to_bounds(BUF_BEGV (XBUFFER (p->buffer)),
1457 BUF_ZV (XBUFFER (p->buffer)));
1458 BUF_SET_PT (current_buffer, opoint);
1465 /* in case buffers use %s in modeline-format */
1466 MARK_MODELINE_CHANGED;
1469 update_tick = temp_process_tick;
1474 DEFUN ("process-status", Fprocess_status, 1, 1, 0, /*
1475 Return the status of PROCESS.
1476 This is a symbol, one of these:
1478 run -- for a process that is running.
1479 stop -- for a process stopped but continuable.
1480 exit -- for a process that has exited.
1481 signal -- for a process that has got a fatal signal.
1482 open -- for a network stream connection that is open.
1483 closed -- for a network stream connection that is closed.
1484 nil -- if arg is a process name and no such process exists.
1486 PROCESS may be a process, a buffer, the name of a process or buffer, or
1487 nil, indicating the current buffer's process.
1491 Lisp_Object status_symbol;
1494 proc = Fget_process (proc);
1496 proc = get_process (proc);
1501 status_symbol = XPROCESS (proc)->status_symbol;
1502 if (network_connection_p (proc))
1504 if (EQ (status_symbol, Qrun))
1505 status_symbol = Qopen;
1506 else if (EQ (status_symbol, Qexit))
1507 status_symbol = Qclosed;
1509 return status_symbol;
1512 DEFUN ("process-exit-status", Fprocess_exit_status, 1, 1, 0, /*
1513 Return the exit status of PROCESS or the signal number that killed it.
1514 If PROCESS has not yet exited or died, return 0.
1518 CHECK_PROCESS (proc);
1519 return make_int (XPROCESS (proc)->exit_code);
1524 /* send a signal number SIGNO to PROCESS.
1525 CURRENT_GROUP means send to the process group that currently owns
1526 the terminal being used to communicate with PROCESS.
1527 This is used for various commands in shell mode.
1528 If NOMSG is zero, insert signal-announcements into process's buffers
1531 If we can, we try to signal PROCESS by sending control characters
1532 down the pty. This allows us to signal inferiors who have changed
1533 their uid, for which killpg would return an EPERM error. */
1536 process_send_signal (Lisp_Object process, int signo,
1537 int current_group, int nomsg)
1539 /* This function can GC */
1540 Lisp_Object proc = get_process (process);
1542 if (network_connection_p (proc))
1543 error ("Network connection %s is not a subprocess",
1544 XSTRING_DATA (XPROCESS(proc)->name));
1545 CHECK_LIVE_PROCESS (proc);
1547 MAYBE_PROCMETH (kill_child_process, (proc, signo, current_group, nomsg));
1550 DEFUN ("interrupt-process", Finterrupt_process, 0, 2, 0, /*
1551 Interrupt process PROCESS. May be process or name of one.
1552 Nil or no arg means current buffer's process.
1553 Second arg CURRENT-GROUP non-nil means send signal to
1554 the current process-group of the process's controlling terminal
1555 rather than to the process's own process group.
1556 If the process is a shell, this means interrupt current subjob
1557 rather than the shell.
1559 (process, current_group))
1561 /* This function can GC */
1562 process_send_signal (process, SIGINT, !NILP (current_group), 0);
1566 DEFUN ("kill-process", Fkill_process, 0, 2, 0, /*
1567 Kill process PROCESS. May be process or name of one.
1568 See function `interrupt-process' for more details on usage.
1570 (process, current_group))
1572 /* This function can GC */
1574 process_send_signal (process, SIGKILL, !NILP (current_group), 0);
1576 error ("kill-process: Not supported on this system");
1581 DEFUN ("quit-process", Fquit_process, 0, 2, 0, /*
1582 Send QUIT signal to process PROCESS. May be process or name of one.
1583 See function `interrupt-process' for more details on usage.
1585 (process, current_group))
1587 /* This function can GC */
1589 process_send_signal (process, SIGQUIT, !NILP (current_group), 0);
1591 error ("quit-process: Not supported on this system");
1596 DEFUN ("stop-process", Fstop_process, 0, 2, 0, /*
1597 Stop process PROCESS. May be process or name of one.
1598 See function `interrupt-process' for more details on usage.
1600 (process, current_group))
1602 /* This function can GC */
1604 process_send_signal (process, SIGTSTP, !NILP (current_group), 0);
1606 error ("stop-process: Not supported on this system");
1611 DEFUN ("continue-process", Fcontinue_process, 0, 2, 0, /*
1612 Continue process PROCESS. May be process or name of one.
1613 See function `interrupt-process' for more details on usage.
1615 (process, current_group))
1617 /* This function can GC */
1619 process_send_signal (process, SIGCONT, !NILP (current_group), 0);
1621 error ("continue-process: Not supported on this system");
1626 DEFUN ("signal-process", Fsignal_process, 2, 2,
1627 "nProcess number: \nnSignal code: ", /*
1628 Send the process with process id PID the signal with code SIGCODE.
1629 PID must be an integer. The process need not be a child of this Emacs.
1630 SIGCODE may be an integer, or a symbol whose name is a signal name.
1642 CHECK_SYMBOL (sigcode);
1643 name = string_data (XSYMBOL (sigcode)->name);
1645 #define handle_signal(signal) \
1646 else if (!strcmp ((const char *) name, #signal)) \
1647 XSETINT (sigcode, signal)
1651 handle_signal (SIGINT); /* ANSI */
1652 handle_signal (SIGILL); /* ANSI */
1653 handle_signal (SIGABRT); /* ANSI */
1654 handle_signal (SIGFPE); /* ANSI */
1655 handle_signal (SIGSEGV); /* ANSI */
1656 handle_signal (SIGTERM); /* ANSI */
1659 handle_signal (SIGHUP); /* POSIX */
1662 handle_signal (SIGQUIT); /* POSIX */
1665 handle_signal (SIGTRAP); /* POSIX */
1668 handle_signal (SIGKILL); /* POSIX */
1671 handle_signal (SIGUSR1); /* POSIX */
1674 handle_signal (SIGUSR2); /* POSIX */
1677 handle_signal (SIGPIPE); /* POSIX */
1680 handle_signal (SIGALRM); /* POSIX */
1683 handle_signal (SIGCHLD); /* POSIX */
1686 handle_signal (SIGCONT); /* POSIX */
1689 handle_signal (SIGSTOP); /* POSIX */
1692 handle_signal (SIGTSTP); /* POSIX */
1695 handle_signal (SIGTTIN); /* POSIX */
1698 handle_signal (SIGTTOU); /* POSIX */
1702 handle_signal (SIGBUS); /* XPG5 */
1705 handle_signal (SIGPOLL); /* XPG5 */
1708 handle_signal (SIGPROF); /* XPG5 */
1711 handle_signal (SIGSYS); /* XPG5 */
1714 handle_signal (SIGURG); /* XPG5 */
1717 handle_signal (SIGXCPU); /* XPG5 */
1720 handle_signal (SIGXFSZ); /* XPG5 */
1723 handle_signal (SIGVTALRM); /* XPG5 */
1727 handle_signal (SIGIO); /* BSD 4.2 */
1730 handle_signal (SIGWINCH); /* BSD 4.3 */
1734 handle_signal (SIGEMT);
1737 handle_signal (SIGINFO);
1740 handle_signal (SIGHWE);
1743 handle_signal (SIGPRE);
1746 handle_signal (SIGUME);
1749 handle_signal (SIGDLK);
1752 handle_signal (SIGCPULIM);
1755 handle_signal (SIGIOT);
1758 handle_signal (SIGLOST);
1761 handle_signal (SIGSTKFLT);
1764 handle_signal (SIGUNUSED);
1767 handle_signal (SIGDANGER); /* AIX */
1770 handle_signal (SIGMSG);
1773 handle_signal (SIGSOUND);
1776 handle_signal (SIGRETRACT);
1779 handle_signal (SIGGRANT);
1782 handle_signal (SIGPWR);
1785 error ("Undefined signal name %s", name);
1788 #undef handle_signal
1790 return make_int (PROCMETH_OR_GIVEN (kill_process_by_pid,
1791 (XINT (pid), XINT (sigcode)), -1));
1794 DEFUN ("process-send-eof", Fprocess_send_eof, 0, 1, 0, /*
1795 Make PROCESS see end-of-file in its input.
1796 PROCESS may be a process, a buffer, the name of a process or buffer, or
1797 nil, indicating the current buffer's process.
1798 If PROCESS is a network connection, or is a process communicating
1799 through a pipe (as opposed to a pty), then you cannot send any more
1800 text to PROCESS after you call this function.
1804 /* This function can GC */
1805 Lisp_Object proc = get_process (process);
1807 /* Make sure the process is really alive. */
1808 if (! EQ (XPROCESS (proc)->status_symbol, Qrun))
1809 error ("Process %s not running", XSTRING_DATA (XPROCESS (proc)->name));
1811 if (!MAYBE_INT_PROCMETH (process_send_eof, (proc)))
1813 if (!NILP (DATA_OUTSTREAM (XPROCESS (proc))))
1815 Lstream_close (XLSTREAM (DATA_OUTSTREAM (XPROCESS (proc))));
1816 event_stream_delete_stream_pair (Qnil, XPROCESS (proc)->pipe_outstream);
1817 XPROCESS (proc)->pipe_outstream = Qnil;
1819 XPROCESS (proc)->coding_outstream = Qnil;
1828 /************************************************************************/
1829 /* deleting a process */
1830 /************************************************************************/
1833 deactivate_process (Lisp_Object proc)
1835 Lisp_Process *p = XPROCESS (proc);
1838 /* It's possible that we got as far in the process-creation
1839 process as creating the descriptors but didn't get so
1840 far as selecting the process for input. In this
1841 case, p->pid is nil: p->pid is set at the same time that
1842 the process is selected for input. */
1843 /* #### The comment does not look correct. event_stream_unselect_process
1844 is guarded by process->selected, so this is not a problem. - kkm*/
1845 /* Must call this before setting the streams to nil */
1846 event_stream_unselect_process (p);
1848 if (!NILP (DATA_OUTSTREAM (p)))
1849 Lstream_close (XLSTREAM (DATA_OUTSTREAM (p)));
1850 if (!NILP (DATA_INSTREAM (p)))
1851 Lstream_close (XLSTREAM (DATA_INSTREAM (p)));
1853 /* Provide minimal implementation for deactivate_process
1854 if there's no process-specific one */
1855 if (HAS_PROCMETH_P (deactivate_process))
1856 usid = PROCMETH (deactivate_process, (p));
1858 usid = event_stream_delete_stream_pair (p->pipe_instream,
1861 if (usid != USID_DONTHASH)
1862 remhash ((const void*)usid, usid_to_process);
1864 p->pipe_instream = Qnil;
1865 p->pipe_outstream = Qnil;
1867 p->coding_instream = Qnil;
1868 p->coding_outstream = Qnil;
1873 remove_process (Lisp_Object proc)
1875 Vprocess_list = delq_no_quit (proc, Vprocess_list);
1876 Fset_marker (XPROCESS (proc)->mark, Qnil, Qnil);
1878 deactivate_process (proc);
1881 DEFUN ("delete-process", Fdelete_process, 1, 1, 0, /*
1882 Delete PROCESS: kill it and forget about it immediately.
1883 PROCESS may be a process or the name of one, or a buffer name.
1887 /* This function can GC */
1889 proc = get_process (proc);
1890 p = XPROCESS (proc);
1891 if (network_connection_p (proc))
1893 p->status_symbol = Qexit;
1899 else if (PROCESS_LIVE_P (p))
1901 Fkill_process (proc, Qnil);
1902 /* Do this now, since remove_process will make sigchld_handler do nothing. */
1903 p->status_symbol = Qsignal;
1904 p->exit_code = SIGKILL;
1910 remove_process (proc);
1914 /* Kill all processes associated with `buffer'.
1915 If `buffer' is nil, kill all processes */
1918 kill_buffer_processes (Lisp_Object buffer)
1922 for (tail = Vprocess_list; CONSP (tail);
1925 Lisp_Object proc = XCAR (tail);
1927 && (NILP (buffer) || EQ (XPROCESS (proc)->buffer, buffer)))
1929 if (network_connection_p (proc))
1930 Fdelete_process (proc);
1931 else if (PROCESS_LIVE_P (XPROCESS (proc)))
1932 process_send_signal (proc, SIGHUP, 0, 1);
1937 DEFUN ("process-kill-without-query", Fprocess_kill_without_query, 1, 2, 0, /*
1938 Say no query needed if PROCESS is running when Emacs is exited.
1939 Optional second argument if non-nil says to require a query.
1940 Value is t if a query was formerly required.
1942 (proc, require_query_p))
1946 CHECK_PROCESS (proc);
1947 tem = XPROCESS (proc)->kill_without_query;
1948 XPROCESS (proc)->kill_without_query = NILP (require_query_p);
1950 return tem ? Qnil : Qt;
1953 DEFUN ("process-kill-without-query-p", Fprocess_kill_without_query_p, 1, 1, 0, /*
1954 Whether PROC will be killed without query if running when emacs is exited.
1958 CHECK_PROCESS (proc);
1959 return XPROCESS (proc)->kill_without_query ? Qt : Qnil;
1963 /* This is not named init_process in order to avoid a conflict with NS 3.3 */
1965 init_xemacs_process (void)
1967 MAYBE_PROCMETH (init_process, ());
1969 Vprocess_list = Qnil;
1971 if (usid_to_process)
1972 clrhash (usid_to_process);
1974 usid_to_process = make_hash_table (32);
1979 xxDEFUN ("process-connection", Fprocess_connection, 0, 1, 0, /*
1980 Return the connection type of `PROCESS'. This can be nil (pipe),
1981 t or pty (pty) or stream (socket connection).
1985 return XPROCESS (process)->type;
1991 syms_of_process (void)
1993 INIT_LRECORD_IMPLEMENTATION (process);
1995 defsymbol (&Qprocessp, "processp");
1996 defsymbol (&Qprocess_live_p, "process-live-p");
1997 defsymbol (&Qrun, "run");
1998 defsymbol (&Qstop, "stop");
1999 defsymbol (&Qopen, "open");
2000 defsymbol (&Qclosed, "closed");
2002 defsymbol (&Qtcp, "tcp");
2003 defsymbol (&Qudp, "udp");
2005 #ifdef HAVE_MULTICAST
2006 defsymbol(&Qmulticast, "multicast"); /* Used for occasional warnings */
2009 DEFSUBR (Fprocessp);
2010 DEFSUBR (Fprocess_live_p);
2011 DEFSUBR (Fget_process);
2012 DEFSUBR (Fget_buffer_process);
2013 DEFSUBR (Fdelete_process);
2014 DEFSUBR (Fprocess_status);
2015 DEFSUBR (Fprocess_exit_status);
2016 DEFSUBR (Fprocess_id);
2017 DEFSUBR (Fprocess_name);
2018 DEFSUBR (Fprocess_tty_name);
2019 DEFSUBR (Fprocess_command);
2020 DEFSUBR (Fset_process_buffer);
2021 DEFSUBR (Fprocess_buffer);
2022 DEFSUBR (Fprocess_mark);
2023 DEFSUBR (Fset_process_filter);
2024 DEFSUBR (Fprocess_filter);
2025 DEFSUBR (Fset_process_window_size);
2026 DEFSUBR (Fset_process_sentinel);
2027 DEFSUBR (Fprocess_sentinel);
2028 DEFSUBR (Fprocess_kill_without_query);
2029 DEFSUBR (Fprocess_kill_without_query_p);
2030 DEFSUBR (Fprocess_list);
2031 DEFSUBR (Fstart_process_internal);
2033 DEFSUBR (Fopen_network_stream_internal);
2034 #ifdef HAVE_MULTICAST
2035 DEFSUBR (Fopen_multicast_group_internal);
2036 #endif /* HAVE_MULTICAST */
2037 #endif /* HAVE_SOCKETS */
2038 DEFSUBR (Fprocess_send_region);
2039 DEFSUBR (Fprocess_send_string);
2040 DEFSUBR (Finterrupt_process);
2041 DEFSUBR (Fkill_process);
2042 DEFSUBR (Fquit_process);
2043 DEFSUBR (Fstop_process);
2044 DEFSUBR (Fcontinue_process);
2045 DEFSUBR (Fprocess_send_eof);
2046 DEFSUBR (Fsignal_process);
2047 /* DEFSUBR (Fprocess_connection); */
2049 DEFSUBR (Fprocess_input_coding_system);
2050 DEFSUBR (Fprocess_output_coding_system);
2051 DEFSUBR (Fset_process_input_coding_system);
2052 DEFSUBR (Fset_process_output_coding_system);
2053 DEFSUBR (Fprocess_coding_system);
2054 DEFSUBR (Fset_process_coding_system);
2055 #endif /* FILE_CODING */
2059 vars_of_process (void)
2061 Fprovide (intern ("subprocesses"));
2063 Fprovide (intern ("network-streams"));
2064 #ifdef HAVE_MULTICAST
2065 Fprovide (intern ("multicast"));
2066 #endif /* HAVE_MULTICAST */
2067 #endif /* HAVE_SOCKETS */
2068 staticpro (&Vprocess_list);
2070 DEFVAR_BOOL ("delete-exited-processes", &delete_exited_processes /*
2071 *Non-nil means delete processes immediately when they exit.
2072 nil means don't delete them until `list-processes' is run.
2075 delete_exited_processes = 1;
2077 DEFVAR_LISP ("process-connection-type", &Vprocess_connection_type /*
2078 Control type of device used to communicate with subprocesses.
2079 Values are nil to use a pipe, or t or `pty' to use a pty.
2080 The value has no effect if the system has no ptys or if all ptys are busy:
2081 then a pipe is used in any case.
2082 The value takes effect when `start-process' is called.
2084 Vprocess_connection_type = Qt;
2086 DEFVAR_BOOL ("windowed-process-io", &windowed_process_io /*
2087 Enables input/output on standard handles of a windowed process.
2088 When this variable is nil (the default), XEmacs does not attempt to read
2089 standard output handle of a windowed process. Instead, the process is
2090 immediately marked as exited immediately upon successful launching. This is
2091 done because normal windowed processes do not use standard I/O, as they are
2092 not connected to any console.
2094 When launching a specially crafted windowed process, which expects to be
2095 launched by XEmacs, or by other program which pipes its standard input and
2096 output, this variable must be set to non-nil, in which case XEmacs will
2097 treat this process just like a console process.
2099 NOTE: You should never set this variable, only bind it.
2101 Only Windows processes can be "windowed" or "console". This variable has no
2102 effect on UNIX processes, because all UNIX processes are "console".
2104 windowed_process_io = 0;
2106 #ifdef PROCESS_IO_BLOCKING
2107 DEFVAR_LISP ("network-stream-blocking-port-list", &network_stream_blocking_port_list /*
2108 List of port numbers or port names to set a blocking I/O mode with connection.
2109 Nil value means to set a default(non-blocking) I/O mode.
2110 The value takes effect when `open-network-stream-internal' is called.
2112 network_stream_blocking_port_list = Qnil;
2113 #endif /* PROCESS_IO_BLOCKING */
2116 #endif /* not NO_SUBPROCESSES */