Line data    Source code

       1             : 
       2             : /* Copyright (c) 2010, Cedric Stalder <cedric.stalder@gmail.com>
       3             :  *               2010-2013, Stefan Eilemann <eile@eyescale.ch>
       4             :  *               2011, Daniel Nachbaur <danielnachbaur@gmail.com>
       5             :  *
       6             :  * This library is free software; you can redistribute it and/or modify it under
       7             :  * the terms of the GNU Lesser General Public License version 2.1 as published
       8             :  * by the Free Software Foundation.
       9             :  *
      10             :  * This library is distributed in the hope that it will be useful, but WITHOUT
      11             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
      12             :  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
      13             :  * details.
      14             :  *
      15             :  * You should have received a copy of the GNU Lesser General Public License
      16             :  * along with this library; if not, write to the Free Software Foundation, Inc.,
      17             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      18             :  */
      19             : 
      20             : #ifndef EQSERVER_CHANGELATENCYVISITOR_H
      21             : #define EQSERVER_CHANGELATENCYVISITOR_H
      22             : 
      23             : #include "compound.h"
      24             : #include "configVisitor.h"
      25             : #include "frame.h"
      26             : #include "layout.h"
      27             : #include "node.h"
      28             : #include "observer.h"
      29             : #include "segment.h"
      30             : #include "tileQueue.h"
      31             : #include "view.h"
      32             : 
      33             : namespace eq
      34             : {
      35             : namespace server
      36             : {
      37             : /**
      38             :  * The Change Latency visitor modifies the latency on all relevant objects.
      39             :  */
      40           0 : class ChangeLatencyVisitor : public ConfigVisitor
      41             : {
      42             : public:
      43           0 :     explicit ChangeLatencyVisitor( const uint32_t latency )
      44           0 :         : _latency( latency ) {}
      45             : 
      46           0 :     virtual VisitorResult visit( Compound* compound )
      47             :     {
      48           0 :         const Frames& outputFrames = compound->getOutputFrames();
      49           0 :         for( FramesCIter i = outputFrames.begin();
      50           0 :              i != outputFrames.end(); ++i )
      51             :         {
      52           0 :             Frame* frame = *i;
      53           0 :             frame->setAutoObsolete( _latency );
      54             :         }
      55             : 
      56           0 :         const Frames& inputFrames = compound->getInputFrames();
      57           0 :         for( FramesCIter i = inputFrames.begin();
      58           0 :              i != inputFrames.end(); ++i )
      59             :         {
      60           0 :             Frame* frame = *i;
      61           0 :             frame->setAutoObsolete( _latency );
      62             :         }
      63             : 
      64           0 :         const TileQueues& outputTileQueues = compound->getOutputTileQueues();
      65           0 :         for( TileQueuesCIter i = outputTileQueues.begin();
      66           0 :              i != outputTileQueues.end(); ++i )
      67             :         {
      68           0 :             TileQueue* queue = *i;
      69           0 :             queue->setAutoObsolete( _latency );
      70             :         }
      71             : 
      72           0 :         const TileQueues& inputTileQueues = compound->getInputTileQueues();
      73           0 :         for( TileQueuesCIter i = inputTileQueues.begin();
      74           0 :              i != inputTileQueues.end(); ++i )
      75             :         {
      76           0 :             TileQueue* queue = *i;
      77           0 :             queue->setAutoObsolete( _latency );
      78             :         }
      79           0 :         return TRAVERSE_CONTINUE;
      80             :     }
      81             : 
      82           0 :     virtual VisitorResult visitPre( Node* node )
      83             :     {
      84           0 :         node->changeLatency( _latency );
      85           0 :         return TRAVERSE_CONTINUE;
      86             :     }
      87             : 
      88           0 :     virtual VisitorResult visit( Observer* observer )
      89           0 :         { return _visit( observer ); }
      90             : 
      91           0 :     virtual VisitorResult visitPre( Layout* layout )
      92           0 :         { return _visit( layout ); }
      93           0 :     virtual VisitorResult visit( View* view )
      94           0 :         { return _visit( view ); }
      95             : 
      96           0 :     virtual VisitorResult visitPre( Segment* segment )
      97           0 :         { return _visit( segment ); }
      98           0 :     virtual VisitorResult visit( Segment* segment )
      99           0 :         { return _visit( segment ); }
     100             : 
     101             : private:
     102             :     const uint32_t _latency;
     103             : 
     104           0 :     VisitorResult _visit( co::Object* object )
     105             :         {
     106             :             // double commit on update/delete
     107           0 :             object->setAutoObsolete( _latency + 1 );
     108           0 :             return TRAVERSE_CONTINUE;
     109             :         }
     110             : };
     111             : 
     112             : }
     113             : }
     114             : #endif // EQSERVER_CHANGELATENCYVISITOR