You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
57 lines
1.5 KiB
57 lines
1.5 KiB
/*
|
|
* ksokoban - a Sokoban game for KDE
|
|
* Copyright (C) 1998 Anders Widell <d95-awi@nada.kth.se>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef TQUEUE_H
|
|
#define TQUEUE_H
|
|
|
|
#include <assert.h>
|
|
|
|
template <class Type, int SizePow2>
|
|
class Queue {
|
|
private:
|
|
Type *queue_;
|
|
long head_, tail_;
|
|
|
|
public:
|
|
void clear() { head_ = tail_ = 0; }
|
|
bool empty() { return head_ == tail_; }
|
|
bool full() { return ((tail_ + 1) & ((1l<<SizePow2)-1)) == head_; }
|
|
|
|
Queue() {
|
|
queue_ = new Type[1l << SizePow2];
|
|
clear();
|
|
}
|
|
~Queue() { delete [] queue_; }
|
|
|
|
void enqueue(Type _x) {
|
|
assert(!full());
|
|
queue_[tail_] = _x;
|
|
tail_ = (tail_ + 1) & ((1l<<SizePow2)-1);
|
|
}
|
|
|
|
Type dequeue() {
|
|
assert(!empty());
|
|
Type x = queue_[head_];
|
|
head_ = (head_ + 1) & ((1l<<SizePow2)-1);
|
|
return x;
|
|
}
|
|
};
|
|
|
|
#endif /* TQUEUE_H */
|