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process.h
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1991-12-02
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/* Definitions for asynchronous process control in GNU Emacs.
Copyright (C) 1985, 1990 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;
/* 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))