Line data    Source code

       1             : 
       2             : /* Copyright (c) 2005-2012, Stefan Eilemann <eile@equalizergraphics.com>
       3             :  *                    2012, Daniel Nachbaur <danielnachbaur@gmail.com>
       4             :  *
       5             :  * This file is part of Collage <https://github.com/Eyescale/Collage>
       6             :  *
       7             :  * This library is free software; you can redistribute it and/or modify it under
       8             :  * the terms of the GNU Lesser General Public License version 2.1 as published
       9             :  * by the Free Software Foundation.
      10             :  *
      11             :  * This library is distributed in the hope that it will be useful, but WITHOUT
      12             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
      13             :  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
      14             :  * details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public License
      17             :  * along with this library; if not, write to the Free Software Foundation, Inc.,
      18             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      19             :  */
      20             : 
      21             : #include "dispatcher.h"
      22             : 
      23             : #include "commandQueue.h"
      24             : #include "iCommand.h"
      25             : #include "node.h"
      26             : 
      27             : #include <lunchbox/log.h>
      28             : 
      29             : namespace co
      30             : {
      31             : namespace detail
      32             : {
      33         614 : class Dispatcher
      34             : {
      35             : public:
      36             :     /** The command handler function table. */
      37             :     std::vector<co::Dispatcher::Func> fTable;
      38             : 
      39             :     /** Defines a queue to which commands are dispatched from the recv. */
      40             :     std::vector<co::CommandQueue*> qTable;
      41             : };
      42             : }
      43             : 
      44         309 : Dispatcher::Dispatcher()
      45         309 :     : _impl(new detail::Dispatcher)
      46             : {
      47         309 : }
      48             : 
      49           0 : Dispatcher::Dispatcher(const Dispatcher&)
      50           0 :     : _impl(new detail::Dispatcher)
      51             : {
      52           0 : }
      53             : 
      54         610 : Dispatcher::~Dispatcher()
      55             : {
      56         305 :     delete _impl;
      57         305 : }
      58             : 
      59             : //===========================================================================
      60             : // command handling
      61             : //===========================================================================
      62        2453 : void Dispatcher::_registerCommand(const uint32_t command, const Func& func,
      63             :                                   CommandQueue* destinationQueue)
      64             : {
      65        2453 :     LBASSERT(_impl->fTable.size() == _impl->qTable.size());
      66             : 
      67        2453 :     if (_impl->fTable.size() <= command)
      68             :     {
      69        4271 :         while (_impl->fTable.size() < command)
      70             :         {
      71        1467 :             _impl->fTable.push_back(Func(this, &Dispatcher::_cmdUnknown));
      72        1467 :             _impl->qTable.push_back(0);
      73             :         }
      74             : 
      75        1337 :         _impl->fTable.push_back(func);
      76        1337 :         _impl->qTable.push_back(destinationQueue);
      77             : 
      78        1337 :         LBASSERT(_impl->fTable.size() == command + 1);
      79             :     }
      80             :     else
      81             :     {
      82        1116 :         _impl->fTable[command] = func;
      83        1116 :         _impl->qTable[command] = destinationQueue;
      84             :     }
      85        2453 : }
      86             : 
      87      642084 : bool Dispatcher::dispatchCommand(ICommand& command)
      88             : {
      89      642084 :     LBASSERT(command.isValid());
      90             : 
      91     1284168 :     LBVERB << "dispatch " << command << " on " << lunchbox::className(this)
      92     1926252 :            << std::endl;
      93             : 
      94      642084 :     const uint32_t which = command.getCommand();
      95             : #ifndef NDEBUG
      96      642084 :     if (which >= _impl->qTable.size())
      97             :     {
      98           0 :         LBABORT("ICommand "
      99             :                 << command
     100             :                 << " higher than number of registered command handlers ("
     101             :                 << _impl->qTable.size() << ") for object of type "
     102             :                 << lunchbox::className(this) << std::endl);
     103           0 :         return false;
     104             :     }
     105             : #endif
     106             : 
     107      642084 :     CommandQueue* queue = _impl->qTable[which];
     108      642084 :     if (queue)
     109             :     {
     110      621517 :         command.setDispatchFunction(_impl->fTable[which]);
     111      621517 :         queue->push(command);
     112      621517 :         return true;
     113             :     }
     114             :     // else
     115             : 
     116       20567 :     LBCHECK(_impl->fTable[which](command));
     117       20567 :     return true;
     118             : }
     119             : 
     120           0 : bool Dispatcher::_cmdUnknown(ICommand& command)
     121             : {
     122           0 :     LBERROR << "Unknown " << command << " for " << lunchbox::className(this)
     123           0 :             << lunchbox::backtrace << std::endl;
     124           0 :     LBUNREACHABLE;
     125           0 :     return false;
     126             : }
     127          63 : }