ll_flush.c

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/*
** Copyright (C) 2002 by Kevin L. Mitchell <klmitch@mit.edu>
**
** 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
**
** @(#)$Id: ll__flush_8c-source.html,v 1.3 2006/09/04 15:12:17 spale Exp $
*/
#include "dbprim.h"
#include "dbprim_int.h"

RCSTAG("@(#)$Id: ll__flush_8c-source.html,v 1.3 2006/09/04 15:12:17 spale Exp $");

unsigned long
ll_flush(link_head_t *list, link_iter_t flush_func, void *extra)
{
  link_elem_t *elem;
  unsigned long retval;

  initialize_dbpr_error_table(); /* initialize error table */

  if (!ll_verify(list)) /* Verify arguments */
    return DB_ERR_BADARGS;

  while ((elem = list->lh_first)) { /* Walk through the list... */
    ll_remove(list, elem); /* remove the element */
    /* call flush function, erroring out if it fails */
    if (flush_func && (retval = (*flush_func)(list, elem, extra)))
      return retval;
  }

  list->lh_count = 0; /* clear the list head */
  list->lh_first = 0;
  list->lh_last = 0;

  return 0;
}

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