/usr/include/rheolef/heap_object.h is in librheolef-dev 6.5-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | #ifndef _RHEOLEF_HEAP_OBJECT_H
#define _RHEOLEF_HEAP_OBJECT_H
///
/// This file is part of Rheolef.
///
/// Copyright (C) 2000-2009 Pierre Saramito <Pierre.Saramito@imag.fr>
///
/// Rheolef is free software; you can redistribute it and/or modify
/// it under the terms of the GNU General Public License as published by
/// the Free Software Foundation; either version 2 of the License, or
/// (at your option) any later version.
///
/// Rheolef is distributed in the hope that it will be useful,
/// but WITHOUT ANY WARRANTY; without even the implied warranty of
/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
/// GNU General Public License for more details.
///
/// You should have received a copy of the GNU General Public License
/// along with Rheolef; if not, write to the Free Software
/// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
///
/// =========================================================================
#include "rheolef/compiler.h"
namespace rheolef {
template<class T>
class heap_object {
public:
typedef size_t size_type;
heap_object(size_type sizeof_bucket = sizeof(T));
~heap_object();
T* new_bucket() const;
#ifdef TO_CLEAN
T* malloc() const { return new_bucket(); } // for boost::object_pool compatibility
#endif // TO_CLEAN
size_type size() const { return _counter; }
void reinitialize (size_type sizeof_bucket = sizeof(T));
void clear ();
protected:
mutable std::list<std::vector<char> > _heap;
mutable size_type _heap_block_size;
mutable size_type _heap_block_last_free;
size_type _sizeof_bucket;
mutable size_type _counter;
static const size_type _heap_block_size_init = 10;
};
template<class T>
inline
heap_object<T>::heap_object(size_type sz)
: _heap(),
_heap_block_size(_heap_block_size_init),
_heap_block_last_free(0),
_sizeof_bucket(sz),
_counter(0)
{
_heap.push_front(std::vector<char>(_heap_block_size*_sizeof_bucket));
}
template<class T>
inline
void
heap_object<T>::reinitialize (size_type sz)
{
clear();
_heap_block_size = heap_object<T>::_heap_block_size_init;
_heap_block_last_free = 0;
_sizeof_bucket = sz;
_counter = 0;
_heap.push_front(std::vector<char>(_heap_block_size*_sizeof_bucket));
}
template<class T>
inline
T*
heap_object<T>::new_bucket() const
{
if (_heap_block_last_free == _heap_block_size) {
_heap_block_size *= 2;
_heap.push_front(std::vector<char>(_heap_block_size*_sizeof_bucket));
_heap_block_last_free = 0;
}
std::vector<char>& block = *(_heap.begin());
char* p = &block [_heap_block_last_free*_sizeof_bucket];
_heap_block_last_free++;
new ((void*) p) T(); // call default T constructor at p
_counter++;
return (T*)p;
}
template<class T>
inline
heap_object<T>::~heap_object()
{
clear();
}
template<class T>
void
heap_object<T>::clear()
{
size_type n = _heap_block_size_init;
for (std::list<std::vector<char> >::reverse_iterator i = _heap.rbegin();
_counter != 0 && i != _heap.rend(); i++, n *= 2) {
std::vector<char>& block = *i;
char* p = &(block[0]);
for (size_type c = 0; _counter != 0 && c < n; c++, p += _sizeof_bucket) {
((T*)p)->~T();
_counter--;
}
}
_heap.erase(_heap.begin(), _heap.end());
}
}// namespace rheolef
#endif // _RHEOLEF_HEAP_OBJECT_H
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