extl/memory/allocator_selector.h

   1 /* ///////////////////////////////////////////////////////////////////////
   2  * File:                allocator_selector.h
   3  *
   4  * Created:             08.03.22
   5  * Updated:             08.04.14
   6  *
   7  * Brief: Memory allocator selector
   8  *
   9  * [<Home>]
  10  * Copyright (c) 2008-2020, Waruqi All rights reserved.
  11  * //////////////////////////////////////////////////////////////////// */
  12
  13 #ifndef EXTL_MEMORY_ALLOCATOR_SELECTOR_H
  14 #define EXTL_MEMORY_ALLOCATOR_SELECTOR_H
  15
  16 /*!\file allocator_selector.h
  17  * \brief Memory allocator selector
  18  */
  19 #ifndef __cplusplus
  20 #       error allocator_selector.h need be supported by c++.
  21 #endif
  22
  23 /* ///////////////////////////////////////////////////////////////////////
  24  * Includes
  25  */
  26 #include "basic_allocator_selector.h"
  27 #include "basic_pool_allocator.h"
  28
  29 /* ///////////////////////////////////////////////////////////////////////
  30  * ::extl namespace
  31  */
  32 EXTL_BEGIN_NAMESPACE
  33
  34 /*!\brief allocator_selector class
  35  *
  36  * \param T The allocator type
  37  *
  38  * [Allocators]
  39  * null_allocator<T>
  40  * new_allocator<T>
  41  * malloc_allocator<T>
  42  * std::allocator<T>
  43  *
  44  * basic_pool_allocator<T, A, L, MAX_FREE_INDEX>
  45  *
  46  * \ingroup extl_group_memory
  47  */
  48 template < typename_param_k T >
  49 struct allocator_selector
  50 {
  51         /// \name Types
  52         /// @{
  53 #if defined(EXTL_MEMORY_ALLOCATOR_SELECT_NULL_ALLOCATOR)
  54         typedef null_allocator<T>                       allocator_type;
  55 #elif defined(EXTL_MEMORY_ALLOCATOR_SELECT_NEW_ALLOCATOR)
  56         typedef new_allocator<T>                        allocator_type;
  57 #elif defined(EXTL_MEMORY_ALLOCATOR_SELECT_MALLOC_ALLOCATOR)
  58         typedef malloc_allocator<T>                     allocator_type;
  59 #elif defined(EXTL_MEMORY_ALLOCATOR_SELECT_BASIC_POOL_ALLOCATOR)
  60 #       ifdef EXTL_TEMPLATE_CLASS_DEFAULT_ARGUMENT_SUPPORT
  61         typedef basic_pool_allocator<T>         allocator_type;
  62 #       else
  63         typedef basic_pool_allocator<   T
  64                                                                 ,       typename_type_k synch_traits_selector::synch_traits_type
  65                                                                 ,       default_basic_pool_allocator_tag
  66                                                                 >               allocator_type;
  67 #       endif /* EXTL_TEMPLATE_CLASS_DEFAULT_ARGUMENT_SUPPORT */
  68 #elif defined(EXTL_MEMORY_ALLOCATOR_SELECT_STD_ALLOCATOR)
  69 #       if !defined(EXTL_NO_STL)
  70         typedef EXTL_NS_STD(allocator)<T>       allocator_type;
  71 #       else
  72 #               ifdef EXTL_TEMPLATE_CLASS_DEFAULT_ARGUMENT_SUPPORT
  73         typedef basic_pool_allocator<T>         allocator_type;
  74 #               else
  75         typedef basic_pool_allocator<   T
  76                                                                 ,       typename_type_k synch_traits_selector::synch_traits_type
  77                                                                 ,       default_basic_pool_allocator_tag
  78                                                                 >               allocator_type;
  79 #               endif /* EXTL_TEMPLATE_CLASS_DEFAULT_ARGUMENT_SUPPORT */
  80 #       endif /* EXTL_NO_STL */
  81 #else
  82 #       error Unknown allocator.
  83 #endif
  84         /// @}
  85
  86 };
  87
  88 /* ///////////////////////////////////////////////////////////////////////
  89  * ::extl namespace
  90  */
  91 EXTL_END_NAMESPACE
  92
  93 /* //////////////////////////////////////////////////////////////////// */
  94 #endif /* EXTL_MEMORY_ALLOCATOR_SELECTOR_H */
  95 /* //////////////////////////////////////////////////////////////////// */
  96
  97