#19765 EDF 21730 - long time to load med file file with huge amount of groups

[modules/smesh.git] / src / SMESHDS / SMESHDS_GroupOnFilter.cxx

diff --git a/src/SMESHDS/SMESHDS_GroupOnFilter.cxx b/src/SMESHDS/SMESHDS_GroupOnFilter.cxx
index 7653e176ce6811b594cd62b99d60e335bf8d7079..3d8f98fc993ffbc6e96cda6c1b2e855a8926c8c8 100644 (file)
--- a/src/SMESHDS/SMESHDS_GroupOnFilter.cxx
+++ b/src/SMESHDS/SMESHDS_GroupOnFilter.cxx
@@ -1,4 +1,4 @@
-// Copyright (C) 2007-2016  CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2020  CEA/DEN, EDF R&D, OPEN CASCADE
 //
 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
@@ -26,11 +26,14 @@
 #include "SMESHDS_GroupOnFilter.hxx"
 
 #include "SMDS_SetIterator.hxx"
+#include "ObjectPool.hxx"
 #include "SMESHDS_Mesh.hxx"
 
 #include <numeric>
 #include <limits>
 
+#include <boost/make_shared.hpp>
+
 using namespace std;
 
 //#undef WITH_TBB
@@ -45,11 +48,12 @@ SMESHDS_GroupOnFilter::SMESHDS_GroupOnFilter (const int                 theID,
                                               const SMESHDS_Mesh*       theMesh,
                                               const SMDSAbs_ElementType theType,
                                               const SMESH_PredicatePtr& thePredicate)
-  : SMESHDS_GroupBase(theID,theMesh,theType),
+  : SMESHDS_GroupBase( theID, theMesh, theType ),
+    SMDS_ElementHolder( theMesh ),
     myMeshInfo( SMDSEntity_Last, 0 ),
-    myMeshModifTime(0),
-    myPredicateTic(0),
-    myNbElemToSkip(0)
+    myMeshModifTime( 0 ),
+    myPredicateTic( 0 ),
+    myNbElemToSkip( 0 )
 {
   SetPredicate( thePredicate );
 }
@@ -143,6 +147,7 @@ namespace // Iterator
     size_t                            myNbToFind, myNbFound, myTotalNb;
     vector< const SMDS_MeshElement*>& myFoundElems;
     bool &                            myFoundElemsOK;
+    bool                              myFoundElemsChecked;
 
     TIterator( const SMESH_PredicatePtr&         filter,
                SMDS_ElemIteratorPtr&             elems,
@@ -157,14 +162,15 @@ namespace // Iterator
       myNbFound( 0 ),
       myTotalNb( totalNb ),
       myFoundElems( foundElems ),
-      myFoundElemsOK( foundElemsOK )
+      myFoundElemsOK( foundElemsOK ),
+      myFoundElemsChecked( false )
     {
       myFoundElemsOK = false;
       next();
     }
     ~TIterator()
     {
-      if ( !myFoundElemsOK )
+      if ( !myFoundElemsChecked && !myFoundElemsOK )
         clearVector( myFoundElems );
     }
     virtual bool more()
@@ -221,6 +227,8 @@ namespace // Iterator
       }
       if ( !myFoundElemsOK )
         clearVector( myFoundElems );
+
+      myFoundElemsChecked = true; // in destructor: not to clearVector() which may already die
     }
   };
 
@@ -387,6 +395,14 @@ void SMESHDS_GroupOnFilter::update() const
 //================================================================================
 #ifdef WITH_TBB
 
+#ifdef WIN32
+// See https://docs.microsoft.com/en-gb/cpp/porting/modifying-winver-and-win32-winnt?view=vs-2019
+// Windows 10 = 0x0A00  
+#define WINVER 0x0A00
+#define _WIN32_WINNT 0x0A00
+
+#endif
+
 #include <tbb/parallel_for.h>
 #include "tbb/enumerable_thread_specific.h"
 
@@ -532,3 +548,38 @@ SMESHDS_GroupOnFilter::setNbElemToSkip( SMDS_ElemIteratorPtr& okElemIt )
   }
   return firstOkElem;
 }
+
+//================================================================================
+/*!
+ * \brief Return elements before mesh compacting
+ */
+//================================================================================
+
+SMDS_ElemIteratorPtr SMESHDS_GroupOnFilter::getElements()
+{
+  return boost::make_shared< SMDS_ElementVectorIterator >( myElements.begin(), myElements.end() );
+}
+
+//================================================================================
+/*!
+ * \brief clear myElements before re-filling after mesh compacting
+ */
+//================================================================================
+
+void SMESHDS_GroupOnFilter::tmpClear()
+{
+  std::vector< const SMDS_MeshElement*> newElems( myElements.size() );
+  myElements.swap( newElems );
+  myElements.clear();
+}
+
+//================================================================================
+/*!
+ * \brief Re-fill myElements after mesh compacting
+ */
+//================================================================================
+
+void SMESHDS_GroupOnFilter::add( const SMDS_MeshElement* element )
+{
+  myElements.push_back( element );
+}