queue.h
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- /*
- * Copyright (c) 1991,1993 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the Computer Systems
- * Engineering Group at Lawrence Berkeley Laboratory.
- * 4. Neither the name of the University nor of the Laboratory may be used
- * to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#) $Header: /cvsroot/nsnam/nam-1/queue.h,v 1.11 2002/10/15 18:06:08 difa Exp $ (LBL)
- */
- #ifndef nam_queue_h
- #define nam_queue_h
- #include "animation.h"
- class View;
- //class PSView;
- class Drop;
- class Queue;
- class Monitor;
- class QueueItem : public Animation {
- friend class Queue;
- public:
- QueueItem(const PacketAttr&, double, long);
- ~QueueItem();
- virtual float distance(float x, float y) const;
- void position(float&, float&);
- virtual void draw(View* nv, double time);
- // virtual void draw(PSView*, double) const;
- virtual void update_bb();
- void locate(float x, float y, float dx, float dy);
- //virtual int inside(double now, float px, float py) const;
- virtual const char* info() const;
- virtual const char* getname() const;
- void monitor(Monitor *m, double now, char *result, int len);
- MonState *monitor_state();
- inline int id() const { return pkt_.id; }
- inline int size() const { return pkt_.size; }
- inline const char* type() const { return (pkt_.type); }
- inline const char* convid() const { return (pkt_.convid); }
- private:
- QueueItem* qnext_;
- float px_[4];
- float py_[4];
- PacketAttr pkt_;
- };
- #define QUEUE_HEAD 1
- #define QUEUE_TAIL 2
- class Queue {
- public:
- Queue(float angle);
- virtual int classid() const { return ClassQueueItemID; }
- virtual void reset(double);
- QueueItem* remove(const PacketAttr& p, int& position);
- QueueItem* remove(const PacketAttr& p) { int d; return remove(p, d); }
- inline int size() const { return (cnt_); }
- void enque(QueueItem*, int mode);
- void relocate();
- void place(double psize, double x, double y);
- inline QueueItem *head() const { return head_; }
- Queue* next_;
- private:
- int cnt_; /* current size of queue */
- QueueItem* head_;
- QueueItem** tail_;
- /*XXX get rid of this */
- float psize_; /* packet size */
- int nb_; /* aggregate bytes in queue */
- float angle_;
- float qx_, qy_; /* coord of head of queue */
- float dx_, dy_; /* space between packets */
- float px_, py_; /* size of each packet */
- };
- #endif