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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itk_alloc.h.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:46 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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PURPOSE. See the above copyright notices for more information. |
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NMS |
=========================================================================*/ |
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DEF |
#ifndef itk_alloc_h |
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DEF |
#define itk_alloc_h |
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// That is an adaptor for working with any alloc provided below |
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template<class T, class Alloc> |
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class itk_simple_alloc { |
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TDR |
typedef Alloc alloc_type; |
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public: |
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TDR |
typedef typename Alloc::value_type alloc_value_type; // awf |
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TDA,TDR |
typedef T value_type; |
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#if !__STL_EAGER_TYPECHECK |
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enum { |
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LEN |
chunk = sizeof(value_type)/sizeof(alloc_value_type)+(sizeof(value_type)%sizeof(alloc_value_type)>0) |
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**}; |
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#else |
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// note: any out-of-line template definitions will not see this. |
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LEN |
#define chunk (sizeof(value_type)/sizeof(alloc_value_type)+(sizeof(value_type)%sizeof(alloc_value_type)>0)) |
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#endif |
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static value_type *allocate(size_t n) |
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{ return 0 == n? 0 : (value_type*) alloc_type().allocate(n * chunk, 0); } |
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static value_type *allocate(void) |
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{ return (value_type*) alloc_type().allocate(chunk, 0); } |
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static void deallocate(value_type *p, size_t n) |
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{ if (0 != n) alloc_type().deallocate(p, n * chunk); } |
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static void deallocate(value_type *p) |
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{ alloc_type().deallocate((char*)p, chunk); } |
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IND |
#undef chunk |
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}; |
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#endif |
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