1 // Created on: 2009-09-23
2 // Copyright (c) 2009-2012 OPEN CASCADE SAS
4 // The content of this file is subject to the Open CASCADE Technology Public
5 // License Version 6.5 (the "License"). You may not use the content of this file
6 // except in compliance with the License. Please obtain a copy of the License
7 // at http://www.opencascade.org and read it completely before using this file.
9 // The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
10 // main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
12 // The Original Code and all software distributed under the License is
13 // distributed on an "AS IS" basis, without warranty of any kind, and the
14 // Initial Developer hereby disclaims all such warranties, including without
15 // limitation, any warranties of merchantability, fitness for a particular
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17 // and conditions governing the rights and limitations under the License.
20 #ifndef _PLib_LocalArray_HeaderFile
21 #define _PLib_LocalArray_HeaderFile
23 #include <Standard.hxx>
24 #include <Standard_TypeDef.hxx>
26 //! Auxiliary class optimizing creation of array buffer for
27 //! evaluation of bspline (using stack allocation for small arrays)
32 // 1K * sizeof (double) = 8K
33 static const size_t MAX_ARRAY_SIZE = 1024;
35 PLib_LocalArray (const size_t theSize)
44 virtual ~PLib_LocalArray()
49 void Allocate (const size_t theSize)
52 if (theSize > MAX_ARRAY_SIZE)
53 myPtr = (Standard_Real*)Standard::Allocate (theSize * sizeof(Standard_Real));
58 operator Standard_Real*() const
65 PLib_LocalArray (const PLib_LocalArray& );
66 PLib_LocalArray& operator= (const PLib_LocalArray& );
72 if (myPtr != myBuffer)
73 Standard::Free (*(Standard_Address*)&myPtr);
78 Standard_Real myBuffer[MAX_ARRAY_SIZE];