69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/* 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;
|
||
}
|
||
}
|
||
}
|