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source: code/branches/core4/src/network/PacketBuffer.cc @ 3935

Last change on this file since 3935 was 3214, checked in by scheusso, 15 years ago

merged netp5 back to trunk

  • Property svn:eol-style set to native
File size: 3.9 KB
Line 
1/*
2 *   ORXONOX - the hottest 3D action shooter ever to exist
3 *                    > www.orxonox.net <
4 *
5 *
6 *   License notice:
7 *
8 *   This program is free software; you can redistribute it and/or
9 *   modify it under the terms of the GNU General Public License
10 *   as published by the Free Software Foundation; either version 2
11 *   of the License, or (at your option) any later version.
12 *
13 *   This program is distributed in the hope that it will be useful,
14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16 *   GNU General Public License for more details.
17 *
18 *   You should have received a copy of the GNU General Public License
19 *   along with this program; if not, write to the Free Software
20 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
21 *
22 *   Author:
23 *      Oliver Scheuss, (C) 2007
24 *   Co-authors:
25 *      ...
26 *
27 */
28
29// C++ PacketBuffer
30// d
31// Author Oliver Scheuss
32
33#include "PacketBuffer.h"
34
35//#include <iostream>
36#include <boost/thread/recursive_mutex.hpp>
37
38namespace orxonox
39{
40  static boost::recursive_mutex packetBuffer_mutex_g;
41
42  PacketBuffer::PacketBuffer() {
43    closed=false;
44    first=NULL;
45    last=NULL;
46  }
47  //this is needed in order to make the packetbuffer threadsafe
48
49
50  bool PacketBuffer::push(ENetEvent *ev) {
51    boost::recursive_mutex::scoped_lock lock(packetBuffer_mutex_g);
52    //std::cout << "event size inside packetbuffer " << ev->packet->dataLength << std::endl;
53    //   if(closed)
54    //     return false;
55    // first element?
56    if(first==NULL){
57      first=new QueueItem;
58      last=first;
59      last->next=NULL;
60      // change this!!!!!!!  ---- we are not doing stl so we won't change this
61      last->event = ev;
62      //last->address = ev->peer->address;
63    } else {
64      //insert a new element at the bottom
65      last->next = new QueueItem;
66      last=last->next;
67      // initialize last->next
68      last->next=NULL;
69      // save the packet to the new element
70      last->event = ev;
71      //last->address = ev->peer->address;
72    }
73    lock.unlock();
74    return true;
75  }
76
77  //returns the first element in the list without deleting it but
78  //moving first pointer to next element
79  /*ENetPacket *PacketBuffer::pop() {
80    ENetAddress address;
81    return pop(address);
82  }*/
83 
84  ENetEvent *PacketBuffer::pop(){
85    boost::recursive_mutex::scoped_lock lock(packetBuffer_mutex_g);
86    //std::cout << "packetbuffer pop(address)" << std::endl;
87    if(first!=NULL /*&& !closed*/){
88      QueueItem *temp = first;
89      // get packet
90      ENetEvent *ev=first->event;
91      //address = first->address;
92      // remove first element
93      first = first->next;
94      delete temp;
95      lock.unlock();
96      //std::cout << "pop(address) size of packet " << pck->dataLength << std::endl;
97      return ev;
98    } else{
99      lock.unlock();
100      return NULL;
101    }
102  }
103
104  /*ENetPacket *PacketBuffer::pop(ENetAddress &address) {
105    boost::recursive_mutex::scoped_lock lock(packetBuffer_mutex_g);
106    //std::cout << "packetbuffer pop(address)" << std::endl;
107    if(first!=NULL ){
108      QueueItem *temp = first;
109      // get packet
110      ENetPacket *pck=first->event->packet;
111      address = first->event->peer->address;
112      // remove first element
113      first = first->next;
114      delete temp;
115      lock.unlock();
116      //std::cout << "pop(address) size of packet " << pck->dataLength << std::endl;
117      return pck;
118    } else{
119      lock.unlock();
120      return NULL;
121    }
122  }*/
123
124  bool PacketBuffer::isEmpty() {
125    return (first==NULL);
126  }
127
128  void PacketBuffer::print() {
129    QueueItem *temp=first;
130    while(temp!=NULL){
131      //    std::cout << temp->packet->data << std::endl;
132      temp=temp->next;
133    }
134
135  }
136
137  bool PacketBuffer::isClosed() {
138    return closed;
139  }
140
141  void PacketBuffer::setClosed(bool value){
142    closed=value;
143    return;
144  }
145
146} // namespace orxonox
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