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/*
* cook - file construction tool
* Copyright (C) 1997, 1999, 2001, 2006, 2007 Peter Miller;
* All rights reserved.
*
* 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, USA.
*
* MANIFEST: functions to quit the program
*/
#include <common/ac/stdlib.h>
#include <common/quit.h>
#include <common/star.h>
static quit_ty quit_list_prio[4];
static size_t quit_list_prio_length;
static quit_ty quit_list[32];
static size_t quit_list_length;
/*
* NAME
* quit_handler
*
* SYNOPSIS
* int quit_handler(quit_ty);
*
* DESCRIPTION
* The quit_handler function registers the function pointed to by func,
* to be called without arguments at normal program termination.
*/
void
quit_handler(quit_ty f)
{
/* assert(quit_list_length < SIZEOF(quit_list)); */
if (quit_list_length < SIZEOF(quit_list))
quit_list[quit_list_length++] = f;
}
void
quit_handler_prio(quit_ty f)
{
/* assert(quit_list_prio_length < SIZEOF(quit_list)); */
if (quit_list_prio_length < SIZEOF(quit_list))
quit_list_prio[quit_list_prio_length++] = f;
}
/*
* NAME
* quit - leave program
*
* SYNOPSIS
* void quit(int status);
*
* DESCRIPTION
* The quit function causes normal program termination to occur.
*
* First, all functions registered by the quit_handler function are
* called, in the reverse order of their registration.
*
* Next, the program is terminated using the exit() function.
*
* CAVEAT
* The quit function never returns to its caller.
*/
void
quit(int n)
{
star_eoln();
while (quit_list_prio_length > 0)
(*quit_list_prio[--quit_list_prio_length]) ();
while (quit_list_length > 0)
(*quit_list[--quit_list_length]) ();
exit(n);
}
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