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/*---------------------------------------------------------------------------*/
/*trans.h*/
/*---------------------------------------------------------------------------*/
/*Facilities to keep track of dynamic translators.*/
/*---------------------------------------------------------------------------*/
/*Copyright (C) 2008, 2009 Free Software Foundation, Inc. Written by
Sergiu Ivanov <unlimitedscolobb@gmail.com>.
This program 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 2 of the
License, or * (at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.*/
/*---------------------------------------------------------------------------*/
#ifndef __TRANS_H__
#define __TRANS_H__
/*---------------------------------------------------------------------------*/
#include <hurd.h>
#include <error.h>
/*---------------------------------------------------------------------------*/
#include "lib.h"
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/*---------Types-------------------------------------------------------------*/
/*An element in the list of dynamic translators */
struct trans_el
{
/*the control port to the translator */
fsys_t cntl;
/*the PID of the translator */
pid_t pid;
/*the next and the previous elements in the list */
struct trans_el * next, * prev;
}; /*struct trans_el */
/*---------------------------------------------------------------------------*/
typedef struct trans_el trans_el_t;
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/*---------Variables---------------------------------------------------------*/
/*The list of dynamic translators */
extern trans_el_t * dyntrans;
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
/*---------Functions---------------------------------------------------------*/
/*Adds a translator to the list of translators. One should use only
this function to add a new element to the list. */
error_t
trans_register (fsys_t cntl, pid_t pid, trans_el_t ** new_trans);
/*---------------------------------------------------------------------------*/
/*Removes a translator from the list. One should use only this
function to remove an element from the list. This function does not
shut down the translator. */
void
trans_unregister (trans_el_t * trans);
/*---------------------------------------------------------------------------*/
/*Gracefully shuts down all the translators registered in the list
with `flags`. If wait is nonzero, waits for each translator to
finish. */
error_t
trans_shutdown_all (int flags, int wait);
/*---------------------------------------------------------------------------*/
/*---------------------------------------------------------------------------*/
#endif /*__TRANS_H__*/
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