69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/* free.c
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Free a buffer from within a memory block.
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Copyright (C) 1992 Ian Lance Taylor
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This file is part of the Taylor UUCP uuconf library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License
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as published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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The author of the program may be contacted at ian@airs.com or
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c/o Cygnus Support, Building 200, 1 Kendall Square, Cambridge, MA 02139.
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*/
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#include "uucnfi.h"
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#if USE_RCS_ID
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const char _uuconf_free_rcsid[] = "$Id: free.c,v 1.4 1994/01/30 21:14:29 ian Rel $";
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#endif
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#include "alloc.h"
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/* Free memory allocated by uuconf_malloc. If the memory block is
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NULL, this just calls free; this is convenient for a number of
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routines. Otherwise, this will only do something if this was the
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last buffer allocated for one of the memory blocks in the list; in
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other cases, the memory is lost until the entire memory block is
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freed. */
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#if UUCONF_ANSI_C
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void
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#endif
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uuconf_free (pblock, pbuf)
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pointer pblock;
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pointer pbuf;
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{
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struct sblock *q = (struct sblock *) pblock;
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if (pbuf == NULL)
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return;
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if (q == NULL)
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{
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free (pbuf);
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return;
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}
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for (; q != NULL; q = q->qnext)
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{
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if (q->plast == pbuf)
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{
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q->ifree = (char *) pbuf - q->u.ab;
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/* We could reset q->plast here, but it doesn't matter. */
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return;
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}
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}
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}
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