src/VVTK/VVTK_ImageWriterMgr.cxx

   1 //  SALOME VTKViewer : build VTK viewer into Salome desktop
   2 //
   3 //  Copyright (C) 2003  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   4 //  CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   5 //
   6 //  This library is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU Lesser General Public
   8 //  License as published by the Free Software Foundation; either
   9 //  version 2.1 of the License.
  10 //
  11 //  This library is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 //  Lesser General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU Lesser General Public
  17 //  License along with this library; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 //
  20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  21 //
  22 //
  23 //
  24 //  File   :
  25 //  Author :
  26 //  Module :
  27 //  $Header$
  28
  29 #include "VVTK_ImageWriterMgr.h"
  30 #include "VVTK_ImageWriter.h"
  31
  32 #include <vtkImageData.h>
  33
  34 #include <qsemaphore.h>
  35
  36 #include <limits>
  37
  38
  39 #ifdef _DEBUG_
  40 static int MYDEBUG = 0;
  41 #else
  42 static int MYDEBUG = 0;
  43 #endif
  44
  45 //----------------------------------------------------------------------------
  46 VVTK_ImageWriterMgr
  47 ::VVTK_ImageWriterMgr()
  48 {
  49   int aMax = std::numeric_limits<int>::max() / 2;
  50   mySemaphore = new QSemaphore(aMax);
  51   *mySemaphore += aMax;
  52   if(MYDEBUG) cout<<"VVTK_ImageWriterMgr::VVTK_ImageWriterMgr "<<
  53                 "- total = "<<mySemaphore->total()<<
  54                 "; available = "<<mySemaphore->available()<<endl;
  55 }
  56
  57
  58 //----------------------------------------------------------------------------
  59 VVTK_ImageWriterMgr
  60 ::~VVTK_ImageWriterMgr()
  61 {
  62   Stop();
  63   delete mySemaphore;
  64 }
  65
  66
  67 //----------------------------------------------------------------------------
  68 void
  69 VVTK_ImageWriterMgr
  70 ::StartImageWriter(vtkImageData *theImageData,
  71                    const std::string& theName,
  72                    const int theProgressive,
  73                    const int theQuality)
  74 {
  75   VVTK_ImageWriter *anImageWriter =
  76     new VVTK_ImageWriter(mySemaphore,
  77                          theImageData,
  78                          theName,
  79                          theProgressive,
  80                          theQuality);
  81   myThreads.push_back(anImageWriter);
  82
  83   anImageWriter->start();
  84
  85 }
  86
  87
  88 //----------------------------------------------------------------------------
  89 void
  90 VVTK_ImageWriterMgr
  91 ::Stop()
  92 {
  93   if(MYDEBUG) cout<<"VVTK_ImageWriterMgr::Stop "<<
  94                 "- total = "<<mySemaphore->total()<<
  95                 "; available = "<<mySemaphore->available()<<endl;
  96   if(MYDEBUG) cout<<"VVTK_ImageWriterMgr::Stop - *mySemaphore += "<<myThreads.size()<<endl;
  97   *mySemaphore += myThreads.size();
  98
  99   for(size_t anId = 0, anEnd = myThreads.size(); anId < anEnd; anId++){
 100     VVTK_ImageWriter* anImageWriter = myThreads[anId];
 101     anImageWriter->wait();
 102     delete anImageWriter;
 103   }
 104   myThreads.clear();
 105 }