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/* free.c
Free a buffer from within a memory block.
Copyright (C) 1992 Ian Lance Taylor
This file is part of the Taylor UUCP uuconf library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License
as published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
The author of the program may be contacted at ian@airs.com or
c/o Cygnus Support, 48 Grove Street, Somerville, MA 02144.
*/
#include "uucnfi.h"
#if USE_RCS_ID
const char _uuconf_free_rcsid[] = "$FreeBSD$";
#endif
#include "alloc.h"
/* Free memory allocated by uuconf_malloc. If the memory block is
NULL, this just calls free; this is convenient for a number of
routines. Otherwise, this will only do something if this was the
last buffer allocated for one of the memory blocks in the list; in
other cases, the memory is lost until the entire memory block is
freed. */
#if UUCONF_ANSI_C
void
#endif
uuconf_free (pblock, pbuf)
pointer pblock;
pointer pbuf;
{
struct sblock *q = (struct sblock *) pblock;
if (pbuf == NULL)
return;
if (q == NULL)
{
free (pbuf);
return;
}
for (; q != NULL; q = q->qnext)
{
if (q->plast == pbuf)
{
q->ifree = (char *) pbuf - q->u.ab;
/* We could reset q->plast here, but it doesn't matter. */
return;
}
}
}
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