BSD 4_3_Net_2 release

[unix-history] / usr / src / usr.bin / pascal / libpc / DFDISPOSE.c

/*-
* Copyright (c) 1982 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by the University of
*      California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/

#ifndef lint
static char sccsid[] = "@(#)DFDISPOSE.c 4.4 (Berkeley) 4/9/90";
#endif /* not lint */

/*
* Close all active files within a dynamic record,
* then dispose of the record.
*/

#include "h00vars.h"
#include "libpc.h"

DFDISPOSE(var, size)
       char    **var;  /* pointer to pointer being deallocated */
       long    size;   /* sizeof(bletch) */
{
       register struct iorec   *next, *prev;
       struct iorec *start, *end;

       start = (struct iorec *)(*var);
       end = (struct iorec *)(*var + size);
       prev = (struct iorec *)(&_fchain);
       next = _fchain.fchain;
       while(next != FILNIL && (next->flev < GLVL || next < start)) {
               prev = next;
               next = next->fchain;
       }
       while(next != FILNIL && start <= next && next < end)
               next = PFCLOSE(next, TRUE);
       prev->fchain = next;
       DISPOSE(var, size);
}