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scalable_allocator.h

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00001 /*
00002     Copyright 2005-2008 Intel Corporation.  All Rights Reserved.
00003 
00004     The source code contained or described herein and all documents related
00005     to the source code ("Material") are owned by Intel Corporation or its
00006     suppliers or licensors.  Title to the Material remains with Intel
00007     Corporation or its suppliers and licensors.  The Material is protected
00008     by worldwide copyright laws and treaty provisions.  No part of the
00009     Material may be used, copied, reproduced, modified, published, uploaded,
00010     posted, transmitted, distributed, or disclosed in any way without
00011     Intel's prior express written permission.
00012 
00013     No license under any patent, copyright, trade secret or other
00014     intellectual property right is granted to or conferred upon you by
00015     disclosure or delivery of the Materials, either expressly, by
00016     implication, inducement, estoppel or otherwise.  Any license under such
00017     intellectual property rights must be express and approved by Intel in
00018     writing.
00019 */
00020 
00021 #ifndef __TBB_scalable_allocator_H
00022 #define __TBB_scalable_allocator_H
00023 
00025 #include <stddef.h> /* Need ptrdiff_t and size_t from here. */
00026 
00027 #if !defined(__cplusplus) && __ICC==1100
00028     #pragma warning (push)
00029     #pragma warning (disable: 991)
00030 #endif
00031 
00032 #ifdef __cplusplus
00033 extern "C" {
00034 #endif /* __cplusplus */
00035 
00036 #if _MSC_VER >= 1400
00037 #define __TBB_EXPORTED_FUNC   __cdecl
00038 #else
00039 #define __TBB_EXPORTED_FUNC
00040 #endif
00041 
00044 void * __TBB_EXPORTED_FUNC scalable_malloc (size_t size);
00045 
00048 void   __TBB_EXPORTED_FUNC scalable_free (void* ptr);
00049 
00052 void * __TBB_EXPORTED_FUNC scalable_realloc (void* ptr, size_t size);
00053 
00056 void * __TBB_EXPORTED_FUNC scalable_calloc (size_t nobj, size_t size);
00057 
00058 #ifdef __cplusplus
00059 } /* extern "C" */
00060 #endif /* __cplusplus */
00061 
00062 #ifdef __cplusplus
00063 
00064 #include <new>      /* To use new with the placement argument */
00065 
00066 namespace tbb {
00067 
00068 #if _MSC_VER && !defined(__INTEL_COMPILER)
00069     // Workaround for erroneous "unreferenced parameter" warning in method destroy.
00070     #pragma warning (push)
00071     #pragma warning (disable: 4100)
00072 #endif
00073 
00075 
00078 template<typename T>
00079 class scalable_allocator {
00080 public:
00081     typedef T* pointer;
00082     typedef const T* const_pointer;
00083     typedef T& reference;
00084     typedef const T& const_reference;
00085     typedef T value_type;
00086     typedef size_t size_type;
00087     typedef ptrdiff_t difference_type;
00088     template<class U> struct rebind {
00089         typedef scalable_allocator<U> other;
00090     };
00091 
00092     scalable_allocator() throw() {}
00093     scalable_allocator( const scalable_allocator& ) throw() {}
00094     template<typename U> scalable_allocator(const scalable_allocator<U>&) throw() {}
00095 
00096     pointer address(reference x) const {return &x;}
00097     const_pointer address(const_reference x) const {return &x;}
00098 
00100     pointer allocate( size_type n, const void* /*hint*/ =0 ) {
00101         return static_cast<pointer>( scalable_malloc( n * sizeof(value_type) ) );
00102     }
00103 
00105     void deallocate( pointer p, size_type ) {
00106         scalable_free( p );
00107     }
00108 
00110     size_type max_size() const throw() {
00111         size_type absolutemax = static_cast<size_type>(-1) / sizeof (T);
00112         return (absolutemax > 0 ? absolutemax : 1);
00113     }
00114     void construct( pointer p, const T& val ) { new(static_cast<void*>(p)) T(val); }
00115     void destroy( pointer p ) {p->~T();}
00116 };
00117 
00118 #if _MSC_VER && !defined(__INTEL_COMPILER)
00119     #pragma warning (pop)
00120 #endif // warning 4100 is back
00121 
00123 
00124 template<>
00125 class scalable_allocator<void> {
00126 public:
00127     typedef void* pointer;
00128     typedef const void* const_pointer;
00129     typedef void value_type;
00130     template<class U> struct rebind {
00131         typedef scalable_allocator<U> other;
00132     };
00133 };
00134 
00135 template<typename T, typename U>
00136 inline bool operator==( const scalable_allocator<T>&, const scalable_allocator<U>& ) {return true;}
00137 
00138 template<typename T, typename U>
00139 inline bool operator!=( const scalable_allocator<T>&, const scalable_allocator<U>& ) {return false;}
00140 
00141 } // namespace tbb
00142 
00143 #if _MSC_VER
00144     #if __TBB_BUILD && !defined(__TBBMALLOC_NO_IMPLICIT_LINKAGE)
00145         #define __TBBMALLOC_NO_IMPLICIT_LINKAGE 1
00146     #endif
00147 
00148     #if !__TBBMALLOC_NO_IMPLICIT_LINKAGE
00149         #ifdef _DEBUG
00150             #pragma comment(lib, "tbbmalloc_debug.lib")
00151         #else
00152             #pragma comment(lib, "tbbmalloc.lib")
00153         #endif
00154     #endif
00155 #endif
00156 
00157 #endif /* __cplusplus */
00158 
00159 #if !defined(__cplusplus) && __ICC==1100
00160     #pragma warning (pop)
00161 #endif // ICC 11.0 warning 991 is back
00162 
00163 #endif /* __TBB_scalable_allocator_H */

Copyright © 2005-2008 Intel Corporation. All Rights Reserved.

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