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- /* Definitions for asynchronous process control in GNU Emacs.
- Copyright (C) 1985 Free Software Foundation, Inc.
-
- This file is part of GNU Emacs.
-
- GNU Emacs is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- GNU Emacs is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU Emacs; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-
- /*
- * Structure records pertinent information about open channels.
- * There is one channel associated with each process.
- */
-
- struct Lisp_Process
- {
- int size;
- struct Lisp_Vector *v_next;
- /* Descriptor by which we read from this process */
- Lisp_Object infd;
- /* Descriptor by which we write to this process */
- Lisp_Object outfd;
- /* Descriptor for the tty which this process is using.
- nil if we didn't record it (on some systems, there's no need). */
- Lisp_Object subtty;
- /* Name of this process */
- Lisp_Object name;
- /* List of command arguments that this process was run with */
- Lisp_Object command;
- /* (funcall FILTER PROC STRING) (if FILTER is non-nil)
- to dispose of a bunch of chars from the process all at once */
- Lisp_Object filter;
- /* (funcall SENTINEL PROCESS) when process state changes */
- Lisp_Object sentinel;
- /* Buffer that output is going to */
- Lisp_Object buffer;
- /* Number of this process */
- Lisp_Object pid;
- /* Non-nil if this is really a command channel */
- Lisp_Object command_channel_p;
- /* Non-nil if this is really a child process */
- Lisp_Object childp;
- /* Marker set to end of last buffer-inserted output from this process */
- Lisp_Object mark;
- /* Non-nil means kill silently if Emacs is exited. */
- Lisp_Object kill_without_query;
- /* Record the process status in the raw form in which it comes from `wait'.
- This is to avoid consing in a signal handler. */
- Lisp_Object raw_status_low;
- Lisp_Object raw_status_high;
- /* Symbol indicating status of process.
- This may be a symbol: run, open, or closed.
- Or it may be a list, whose car is stop, exit or signal
- and whose cdr is a pair (EXIT_CODE . COREDUMP_FLAG)
- or (SIGNAL_NUMBER . COREDUMP_FLAG). */
- Lisp_Object status;
- /* Non-nil if communicating through a pty. */
- Lisp_Object pty_flag;
- /* Event-count of last event in which this process changed status. */
- Lisp_Object tick;
- /* Event-count of last such event reported. */
- Lisp_Object update_tick;
- };
-
- #define ChannelMask(n) (1<<(n))
-
- /* True iff we are about to fork off a synchronous process or if we
- are waiting for it. */
- extern int synch_process_alive;
-
- /* Communicate exit status of synch process to from sigchld_handler
- to Fcall_process. */
- extern int synch_process_retcode;
- extern char *synch_process_death;
-
- /* Nonzero => this is a string explaining death of synchronous subprocess. */
- extern char *synch_process_death;
-
- /* If synch_process_death is zero,
- this is exit code of synchronous subprocess. */
- extern int synch_process_retcode;
-
- /* The name of the file open to get a null file, or a data sink.
- VMS, MS-DOS, and OS/2 redefine this. */
- #ifndef NULL_DEVICE
- #define NULL_DEVICE "/dev/null"
- #endif
-
- /* A string listing the possible suffixes used for executable files,
- separated by colons. VMS, MS-DOS, and OS/2 redefine this. */
- #ifndef EXEC_SUFFIXES
- #define EXEC_SUFFIXES ""
- #endif
-