2 * CDE - Common Desktop Environment
4 * Copyright (c) 1993-2012, The Open Group. All rights reserved.
6 * These libraries and programs are free software; you can
7 * redistribute them and/or modify them under the terms of the GNU
8 * Lesser General Public License as published by the Free Software
9 * Foundation; either version 2 of the License, or (at your option)
12 * These libraries and programs are distributed in the hope that
13 * they will be useful, but WITHOUT ANY WARRANTY; without even the
14 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU Lesser General Public License for more
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with these librararies and programs; if not, write
20 * to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
21 * Floor, Boston, MA 02110-1301 USA
23 /* $XConsortium: IQueue.h /main/1 1996/07/29 16:53:51 cde-hp $ */
24 // Copyright (c) 1994 James Clark
25 // See the file COPYING for copying permission.
27 #ifndef IQueue_INCLUDED
28 #define IQueue_INCLUDED 1
34 namespace SP_NAMESPACE {
39 IQueueBase() : last_(0) { }
41 Boolean empty() const { return last_ == 0; }
43 Link *tem = last_->next_;
47 last_->next_ = tem->next_;
50 void append(Link *p) {
52 p->next_ = last_->next_;
53 last_ = last_->next_ = p;
58 void swap(IQueueBase &with) {
69 class IQueue : private IQueueBase {
72 ~IQueue() { clear(); }
74 T *get() { return (T *)IQueueBase::get(); }
75 void append(T *p) { IQueueBase::append(p); }
76 Boolean empty() const { return IQueueBase::empty(); }
77 void swap(IQueue<T> &to) { IQueueBase::swap(to); }
84 #endif /* not IQueue_INCLUDED */
86 #ifdef SP_DEFINE_TEMPLATES