Line data    Source code

       1             : 
       2             : /* Copyright (c) 2011-2016, Stefan Eilemann <eile@equalizergraphics.com>
       3             :  *                          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 "dataIStreamQueue.h"
      22             : 
      23             : #include "objectDataICommand.h"
      24             : #include "objectDataIStream.h"
      25             : 
      26             : namespace co
      27             : {
      28          66 : DataIStreamQueue::DataIStreamQueue()
      29             : {
      30          66 : }
      31             : 
      32         128 : DataIStreamQueue::~DataIStreamQueue()
      33             : {
      34          64 :     LBASSERTINFO(_pending.empty(), "Incomplete commits pending");
      35          64 :     LBASSERTINFO(_queued.isEmpty(), _queued.getSize() << " unapplied commits")
      36             : 
      37          64 :     for (PendingStreamsCIter i = _pending.begin(); i != _pending.end(); ++i)
      38           0 :         delete i->second;
      39          64 :     _pending.clear();
      40             : 
      41          64 :     QueuedStream stream;
      42          64 :     while (_queued.tryPop(stream))
      43           0 :         delete stream.second;
      44          64 : }
      45             : 
      46           0 : ObjectDataIStream* DataIStreamQueue::tryPop()
      47             : {
      48           0 :     QueuedStream stream(uint128_t(), (ObjectDataIStream*)0);
      49           0 :     _queued.tryPop(stream);
      50           0 :     return stream.second;
      51             : }
      52             : 
      53           5 : ObjectDataIStream* DataIStreamQueue::pull(const uint128_t& key)
      54             : {
      55           5 :     ObjectDataIStream* is = 0;
      56          10 :     QueuedStreams unusedStreams;
      57          15 :     while (!is)
      58             :     {
      59           5 :         QueuedStream candidate = _queued.pop();
      60           5 :         if (candidate.first == key)
      61           5 :             is = candidate.second;
      62             :         else
      63           0 :             unusedStreams.push_back(candidate);
      64             :     }
      65             : 
      66           5 :     _queued.pushFront(unusedStreams);
      67          10 :     return is;
      68             : }
      69             : 
      70           5 : void DataIStreamQueue::recycle(ObjectDataIStream* stream)
      71             : {
      72             : #ifdef CO_AGGRESSIVE_CACHING
      73             :     stream->reset();
      74             :     _iStreamCache.release(stream);
      75             : #else
      76           5 :     delete stream;
      77             : #endif
      78           5 : }
      79             : 
      80           7 : bool DataIStreamQueue::addDataCommand(const uint128_t& key, ICommand& command)
      81             : {
      82           7 :     LB_TS_THREAD(_thread);
      83           7 :     LBASSERTINFO(_pending.size() < 100, "More than 100 pending commits");
      84             : 
      85           7 :     ObjectDataIStream* is = 0;
      86           7 :     PendingStreams::iterator i = _pending.find(key);
      87           7 :     if (i == _pending.end())
      88           5 :         is = _iStreamCache.alloc();
      89             :     else
      90           2 :         is = i->second;
      91             : 
      92           7 :     is->addDataCommand(command);
      93           7 :     if (is->isReady())
      94             :     {
      95           5 :         if (i != _pending.end())
      96           2 :             _pending.erase(i);
      97             : 
      98           5 :         _queued.push(QueuedStream(key, is));
      99           5 :         return true;
     100             :     }
     101             : 
     102           2 :     if (i == _pending.end())
     103             :     {
     104           2 :         _pending[key] = is;
     105           2 :         return false;
     106             :     }
     107             : 
     108           0 :     return false;
     109             : }
     110          63 : }