0023631: Infinite memory consumption in BRepMesh
[occt.git] / src / BRepMesh / BRepMesh_FaceChecker.hxx
diff --git a/src/BRepMesh/BRepMesh_FaceChecker.hxx b/src/BRepMesh/BRepMesh_FaceChecker.hxx
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+// Created on: 2014-05-28
+// Created by: Oleg AGASHIN
+// Copyright (c) 2011-2014 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#ifndef _BRepMesh_FaceChecker_HeaderFile
+#define _BRepMesh_FaceChecker_HeaderFile
+
+#include <Standard.hxx>
+#include <Standard_Mutex.hxx>
+#include <TopoDS_Face.hxx>
+#include <TopoDS_Edge.hxx>
+#include <TopLoc_Location.hxx>
+#include <Poly_Triangulation.hxx>
+#include <TopExp_Explorer.hxx>
+#include <BRepMesh_EdgeChecker.hxx>
+
+#include <vector>
+
+#ifdef HAVE_TBB
+  // paralleling using Intel TBB
+  #include <tbb/parallel_for_each.h>
+#endif
+
+//! Auxilary class implementing functionality for 
+//! checking consistency of triangulation on the given face.
+class BRepMesh_FaceChecker
+{
+public:
+
+  //! Constructor
+  //! \param isInParallel Flag indicates that face edges should be checked in parallel.
+  BRepMesh_FaceChecker(const Standard_Boolean isInParallel)
+    : myIsFailed(Standard_False),
+      myIsInParallel(isInParallel)
+  {
+  }
+
+  //! Checker's body.
+  //! \param theFace Face to be checked.
+  void operator ()(const TopoDS_Face& theFace) const
+  {
+    if (theFace.IsNull() || myIsFailed)
+      return;
+
+    TopLoc_Location aFaceLoc;
+    Handle(Poly_Triangulation) aFaceT =
+      BRep_Tool::Triangulation(theFace, aFaceLoc);
+
+    if (aFaceT.IsNull())
+      return;
+
+    std::vector<TopoDS_Edge> aEdges;
+    TopExp_Explorer aEdgeIt(theFace, TopAbs_EDGE);
+    for ( ; aEdgeIt.More(); aEdgeIt.Next())
+      aEdges.push_back(TopoDS::Edge(aEdgeIt.Current()));
+
+    BRepMesh_EdgeChecker aEdgeChecker(aFaceT, aFaceLoc, myMutex, myIsFailed);
+    if (myIsInParallel)
+    {
+    #ifdef HAVE_TBB
+      // check faces in parallel threads using TBB
+      tbb::parallel_for_each(aEdges.begin(), aEdges.end(), aEdgeChecker);
+    #else
+      // alternative parallelization not yet available
+      for (std::vector<TopoDS_Edge>::iterator it(aEdges.begin()); it != aEdges.end(); it++)
+        aEdgeChecker(*it);
+    #endif
+    }
+    else
+    {
+      for (std::vector<TopoDS_Edge>::iterator it(aEdges.begin()); it != aEdges.end(); it++)
+        aEdgeChecker(*it);
+    }
+  }
+
+  //! Returns status of the check.
+  Standard_Boolean IsValid() const 
+  {
+    return !myIsFailed;
+  }
+
+private:
+  mutable Standard_Mutex   myMutex;
+  mutable Standard_Boolean myIsFailed;
+  Standard_Boolean         myIsInParallel;
+};
+
+#endif