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UninitializedStoragePool.h

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00001 /*******************************************************************************
00002  *
00003  * Copyright (c) 2008-2010 Michael Schulze <mschulze@ivs.cs.uni-magdeburg.de>
00004  * All rights reserved.
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00006  *    Redistribution and use in source and binary forms, with or without
00007  *    modification, are permitted provided that the following conditions
00008  *    are met:
00009  *
00010  *    * Redistributions of source code must retain the above copyright
00011  *      notice, this list of conditions and the following disclaimer.
00012  *
00013  *    * Redistributions in binary form must reproduce the above copyright
00014  *      notice, this list of conditions and the following disclaimer in
00015  *      the documentation and/or other materials provided with the
00016  *      distribution.
00017  *
00018  *    * Neither the name of the copyright holders nor the names of
00019  *      contributors may be used to endorse or promote products derived
00020  *      from this software without specific prior written permission.
00021  *
00022  *
00023  *    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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00038 #ifndef __UninitializedStoragePool_h__
00039 #define __UninitializedStoragePool_h__
00040 
00041 #include "object/Uninitialized.h"
00042 
00043 namespace object {
00044 
00063     template < typename T,
00064                template<typename, unsigned int, bool> class C,
00065                unsigned int N=8,
00066                bool callDestructor = true >
00067     class UninitializedStoragePool : public C< Uninitialized<T>, N, callDestructor > {
00068 
00070             typedef C<Uninitialized<T> , N, callDestructor >   Storage;
00071         public:
00073             typedef T   value_type;
00074 
00076             typedef T*  pointer;
00077 
00079             typedef T&  reference;
00080 
00082             class Iterator : public Storage::iterator {
00083                 public:
00088                     value_type& operator* () const {
00089                         return reinterpret_cast<value_type&>(Storage::iterator::operator*());
00090                     }
00091 
00092                 private:
00093                     Iterator ();
00094             };
00095             typedef Iterator    iterator;
00096 
00097             ~UninitializedStoragePool () {
00098                 if (callDestructor)
00099                     for ( iterator i = begin(); i != end(); i = begin() )
00100                         delElement (&*i);
00101             }
00102 
00104             iterator begin () __attribute__((always_inline)) {
00105                 typename Storage::iterator i = Storage::begin();
00106                 return *static_cast<iterator*>(&i);
00107             }
00108 
00110             iterator end () __attribute__((always_inline)) {
00111                 typename Storage::iterator i = Storage::end();
00112                 return *static_cast<iterator*>(&i);
00113             }
00114 
00116             void delElement (const pointer v) __attribute__((always_inline)) {
00117                 Storage::delElement(reinterpret_cast<Uninitialized<value_type>*>(v));
00118                 v->~value_type();
00119             }
00120 
00126             value_type* newElement () __attribute__((always_inline)) {
00127                 return reinterpret_cast<value_type*>(Storage::newElement());
00128             }
00129     };
00130 
00131 } /* namespace object */
00132 
00133 #endif
00134