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source: code/trunk/src/libraries/network/TrafficControl.cc @ 6234

Last change on this file since 6234 was 6073, checked in by rgrieder, 15 years ago

Found more tabs in the trunk.

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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 <scheusso [at] ee.ethz.ch>
24 *   Co-authors:
25 *      ...
26 *
27 */
28
29#include "TrafficControl.h"
30
31#include <cassert>
32#include <boost/bind.hpp>
33
34#include "core/CoreIncludes.h"
35#include "core/ConfigValueIncludes.h"
36#include "synchronisable/Synchronisable.h"
37
38namespace orxonox {
39
40  static const unsigned int SCHED_PRIORITY_OFFSET = static_cast<unsigned int>(-1);
41
42  objInfo::objInfo(uint32_t ID, uint32_t creatorID, int32_t curGsID, int32_t diffGsID, uint32_t size, unsigned int prioperm, unsigned int priosched)
43  {
44    objID = ID; objCreatorID = creatorID; objCurGS = curGsID; objDiffGS = diffGsID; objSize = size; objValuePerm = prioperm; objValueSched = priosched;
45  }
46
47  objInfo::objInfo()
48  {
49    objID = OBJECTID_UNKNOWN; objCreatorID = OBJECTID_UNKNOWN; objCurGS = GAMESTATEID_INITIAL; objDiffGS = objCurGS; objSize = 0; objValuePerm = 0; objValueSched = 0;
50  }
51
52
53
54  obj::obj()
55  {
56    objID = OBJECTID_UNKNOWN; objCreatorID = OBJECTID_UNKNOWN; objSize = 0; objDataOffset = 0;
57  }
58  obj::obj( uint32_t ID, uint32_t creatorID, uint32_t size, uint32_t offset )
59  {
60    objID = ID; objCreatorID = creatorID; objSize = size; objDataOffset = offset;
61  }
62
63/**
64*Initializing protected members
65*/
66    TrafficControl *TrafficControl::instance_=0;
67
68    /**
69    * @brief Constructor: assures that only one reference will be created and sets the pointer
70    */
71    TrafficControl::TrafficControl()
72    {
73    RegisterObject(TrafficControl);
74      assert(instance_==0);
75      instance_=this;
76    this->setConfigValues();
77    }
78
79    /**
80    * @brief Destructor: resets the instance pointer to 0
81    */
82    TrafficControl::~TrafficControl()
83    {
84      instance_=0;
85    }
86
87/**
88*Definition of public members
89*/
90
91  void TrafficControl::setConfigValues()
92  {
93    SetConfigValue ( bActive_, false );
94    SetConfigValue ( targetSize, 10000 );
95  }
96
97  /**
98  * sort-algorithm for sorting the objectlist after priorities
99  */
100  bool TrafficControl::prioritySort(uint32_t clientID, obj i, obj j)
101  {
102    assert(clientListPerm_.find(clientID) != clientListPerm_.end());  //make sure the client exists in our list
103    assert(clientListPerm_[clientID].find(i.objID) != clientListPerm_[clientID].end()); // make sure the object i is in the client list
104    assert(clientListPerm_[clientID].find(j.objID) != clientListPerm_[clientID].end()); // make sure the object j is in the client list
105
106    int prio1 = clientListPerm_[clientID][i.objID].objValuePerm + clientListPerm_[clientID][i.objID].objValueSched;
107    int prio2 = clientListPerm_[clientID][j.objID].objValuePerm + clientListPerm_[clientID][j.objID].objValueSched;
108    return prio1 < prio2;
109  }
110
111  /**
112  * sort-algorithm for sorting the objectList after position in original data stream
113  */
114  bool TrafficControl::dataSort(obj i, obj j)
115  {
116    int pos1 = i.objDataOffset;
117    int pos2 = j.objDataOffset;
118    return pos1 < pos2;
119  }
120
121
122
123    void TrafficControl::processObjectList(unsigned int clientID, unsigned int gamestateID, std::list<obj>& list)
124    {
125      currentClientID=clientID;
126      currentGamestateID=gamestateID;
127      evaluateList(clientID, list);
128      return;
129    }
130
131  TrafficControl *TrafficControl::getInstance()
132  {
133    assert(instance_);
134    return instance_;
135  }
136
137    void TrafficControl::ack(unsigned int clientID, unsigned int gamestateID)
138    {
139    if ( !this->bActive_ )
140      return;
141      std::list<obj>::iterator itvec;  // iterator to iterate through the acked objects
142
143    //assertions to make sure the maps already exist
144    assert(clientListTemp_.find(clientID) != clientListTemp_.end() );
145    assert(clientListPerm_.find(clientID) != clientListPerm_.end() );
146    assert( clientListTemp_[clientID].find(gamestateID) != clientListTemp_[clientID].end() );
147   
148    // shortcut for maps
149    std::map<unsigned int, objInfo >& objectListPerm = clientListPerm_[clientID];
150    std::map<unsigned int, std::list<obj> >& objectListTemp = clientListTemp_[clientID];
151
152    for(itvec = objectListTemp[gamestateID].begin(); itvec != objectListTemp[gamestateID].end(); itvec++)
153      {
154      if(objectListPerm.find((*itvec).objID) != objectListPerm.end()) // check whether the obj already exists in our lists
155      {
156        objectListPerm[(*itvec).objID].objCurGS = gamestateID;
157        objectListPerm[(*itvec).objID].objValueSched = 0; //set scheduling value back
158      }
159      else
160      {
161        assert(0);
162        objectListPerm[(*itvec).objID].objCurGS = gamestateID;
163        objectListPerm[(*itvec).objID].objID = (*itvec).objID;
164        objectListPerm[(*itvec).objID].objCreatorID = (*itvec).objCreatorID;
165        objectListPerm[(*itvec).objID].objSize = (*itvec).objSize;
166      }
167      }
168       // remove temporary list (with acked objects) from the map
169    objectListTemp.erase( objectListTemp.find(gamestateID) );
170    }
171
172/**
173*Definition of private members
174*/
175
176    /**
177    *updateClientListPerm
178    *returns void
179    */
180    void TrafficControl::insertinClientListPerm(unsigned int clientID, obj objinf)
181    {
182      std::map<unsigned int,std::map<unsigned int, objInfo> >::iterator itperm;//iterator clientListPerm over clientIDs
183    unsigned int gsid=GAMESTATEID_INITIAL, gsdiff=currentGamestateID, prioperm=Synchronisable::getSynchronisable(objinf.objID)->getPriority(), priomom=0;
184    clientListPerm_[clientID][objinf.objID] = objInfo(objinf.objID, objinf.objCreatorID,gsid,gsdiff, objinf.objSize,prioperm,priomom);
185    }
186
187  /**
188  * updateClientListTemp
189  * takes the shortened list which will be sent to the gsmanager and puts the *info into clientListTemp
190  */
191  void TrafficControl::updateClientListTemp(std::list<obj>& list)
192  {
193    clientListTemp_[currentClientID][currentGamestateID] = list;
194  }
195
196  /**
197  *cut
198  *takes the current list that has to be returned to the gsmanager and shortens it in criteria of bandwidth of clientID(XY)
199  */
200  void TrafficControl::cut(std::list<obj>& list, unsigned int targetsize)
201  {
202    unsigned int size=0;
203    std::list<obj>::iterator itvec, ittemp;
204    assert(!list.empty());
205    for(itvec = list.begin(); itvec != list.end();)
206    {
207      assert( (*itvec).objSize < 1000);
208      if ( ( size + (*itvec).objSize ) < targetsize )
209      {
210        size += (*itvec).objSize;//objSize is given in bytes
211        ++itvec;
212      }
213      else
214      {
215        clientListPerm_[currentClientID][(*itvec).objID].objValueSched += SCHED_PRIORITY_OFFSET; // NOTE: SCHED_PRIORITY_OFFSET is negative
216        list.erase(itvec, list.end());
217        break;
218      }
219//       printList(list, currentClientID);
220    }
221    assert(!list.empty());
222  }
223
224
225    /**
226    *evaluateList evaluates whether new obj are there, whether there are things to be updatet and manipulates all this.
227    */
228    void TrafficControl::evaluateList(unsigned int clientID, std::list<obj>& list)
229    {
230
231    if( bActive_ )
232    {
233      //now the sorting
234
235      //compare listToProcess vs clientListPerm
236      //if listToProcess contains new Objects, add them to clientListPerm
237      std::list<obj>::iterator itvec;
238   
239      std::map<unsigned int, objInfo >& objectListPerm = clientListPerm_[clientID];
240   
241      for( itvec=list.begin(); itvec != list.end(); itvec++)
242      {
243        if ( objectListPerm.find( (*itvec).objID) != objectListPerm.end() )
244        {
245        // we already have the object in our map
246        //obj bleibt in liste und permanente prio wird berechnet
247          objectListPerm[(*itvec).objID].objDiffGS = currentGamestateID - objectListPerm[(*itvec).objID].objCurGS;
248          continue;//check next objId
249        }
250        else
251        {
252        // insert the object into clientListPerm
253          insertinClientListPerm(clientID,*itvec);
254          continue;//check next objId
255        }
256      }
257    //end compare listToProcess vs clientListPerm
258     
259      //sort copied list according to priorities
260      // use boost bind here because we need to pass a memberfunction to stl sort
261//       sort( list.begin(), list.end(), boost::bind(&TrafficControl::prioritySort, this, clientID, _1, _2) );
262      list.sort( boost::bind(&TrafficControl::prioritySort, this, clientID, _1, _2) );
263     
264//       list.sort(boost::bind(&TrafficControl::prioritySort, this, clientID, _1, _2) );
265
266      //now we check, that the creator of an object always exists on a client
267      std::list<obj>::iterator itcreator;
268      for(itvec = list.begin(); itvec != list.end(); itvec++)
269      {
270        fixCreatorDependencies(itvec, list, clientID);
271      }
272      //end of sorting
273      //now the cutting, work the same obj out in processobjectlist and copiedlist, compression rate muss noch festgelegt werden.
274//       printList(list, clientID);
275      cut(list, targetSize);
276      //now sort again after objDataOffset
277//       sort(list.begin(), list.end(), boost::bind(&TrafficControl::dataSort, this, _1, _2) );
278      list.sort( boost::bind(&TrafficControl::dataSort, this, _1, _2) );
279     
280      //diese Funktion updateClientList muss noch gemacht werden
281      updateClientListTemp(list);
282      //end of sorting
283    }
284  }
285
286  void TrafficControl::printList(std::list<obj>& list, unsigned int clientID)
287  {
288    std::list<obj>::iterator it;
289    COUT(0) << "=========== Objectlist ===========" << endl;
290    for( it=list.begin(); it!=list.end(); it++)
291      COUT(0) << "ObjectID: " << (*it).objID << " creatorID: " << (*it).objCreatorID << " Priority: " << clientListPerm_[clientID][(*it).objID].objValuePerm + clientListPerm_[clientID][(*it).objID].objValueSched << " size: " << (*it).objSize << endl;
292  }
293
294  void TrafficControl::fixCreatorDependencies(std::list<obj>::iterator it1, std::list<obj>& list, unsigned int clientID)
295  {
296    if ( (*it1).objCreatorID == OBJECTID_UNKNOWN )
297      return;
298    if( clientListPerm_[clientID][(*it1).objCreatorID].objCurGS != GAMESTATEID_INITIAL )
299      return;
300    std::list<obj>::iterator it2, it3=it1;
301    for( it2 = ++it3; it2 != list.end(); it2++ )
302    {
303      if( (*it2).objID == (*it1).objCreatorID )
304      {
305        it3 = list.insert(it1, *it2); //insert creator before it1
306        list.erase(it2);
307//         printList(list, clientID);
308        fixCreatorDependencies( it3, list, clientID );
309        break;
310      }
311    }
312  }
313
314  void TrafficControl::clientDisconnected(unsigned int clientID)
315  {
316    if( clientListPerm_.find(clientID) == clientListPerm_.end() )
317    {
318      assert(!this->bActive_);
319      return;
320    }
321    clientListTemp_.erase(clientListTemp_.find(clientID));
322    if( clientListTemp_.find(clientID) != clientListTemp_.end() )
323      clientListPerm_.erase(clientListPerm_.find(clientID));
324  }
325
326
327}//namespace network
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