watchlst.cpp
上传用户:zhongxx05
上传日期:2007-06-06
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文件大小:3k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "watchlst.h"
- #include "hxheap.h"
- #ifdef _DEBUG
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- WListElem::WListElem()
- {
- prev = next = this;
- }
- WatchList::WatchList()
- {
- head = new WListElem;
- head->data = 0;
- }
- WatchList::~WatchList()
- {
- WListElem* tmp = head->next;
- while (tmp != head)
- {
- head->next = tmp->next;
- delete tmp;
- tmp = head->next;
- }
- delete head;
- }
- void
- WatchList::insert(WListElem* elem)
- {
- elem->next = head;
- elem->prev = head->prev;
- head->prev->next = elem;
- head->prev = elem;
- }
-
- void WatchList::removeElem(WListElem* elem)
- {
- WListElem* lpp;
- WListElem* lp;
- for (lpp = head; (lp = lpp->next) != head; lpp = lpp->next)
- {
- if (lp == elem)
- {
- lpp->next = lp->next;
- lp->next->prev = lpp;
- lp->prev = lp->next = lp;
- break;
- }
- }
- }