92 lines
2.6 KiB
C++
92 lines
2.6 KiB
C++
/* STL allocator for secmem
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* Copyright (C) 2008 Marc Mutz <marc@kdab.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <https://www.gnu.org/licenses/>.
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __SECMEM_SECMEMPP_H__
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#define __SECMEM_SECMEMPP_H__
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#include "secmem/memory.h"
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#include <cstddef>
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namespace secmem {
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template <typename T>
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class alloc {
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public:
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// type definitions:
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typedef size_t size_type;
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typedef ptrdiff_t difference_type;
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typedef T* pointer;
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typedef const T* const_pointer;
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typedef T& reference;
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typedef const T& const_reference;
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typedef T value_type;
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// rebind
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template <typename U>
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struct rebind {
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typedef alloc<U> other;
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};
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// address
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pointer address( reference value ) const {
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return &value;
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}
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const_pointer address( const_reference value ) const {
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return &value;
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}
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// (trivial) ctors and dtors
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alloc() {}
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alloc( const alloc & ) {}
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template <typename U> alloc( const alloc<U> & ) {}
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// copy ctor is ok
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~alloc() {}
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// de/allocation
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size_type max_size() const {
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return secmem_get_max_size();
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}
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pointer allocate( size_type n, void * =0 ) {
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return static_cast<pointer>( secmem_malloc( n * sizeof(T) ) );
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}
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void deallocate( pointer p, size_type ) {
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secmem_free( p );
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}
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// de/construct
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void construct( pointer p, const T & value ) {
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void * loc = p;
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new (loc)T(value);
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}
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void destruct( pointer p ) {
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p->~T();
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}
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};
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// equality comparison
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template <typename T1,typename T2>
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bool operator==( const alloc<T1> &, const alloc<T2> & ) { return true; }
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template <typename T1, typename T2>
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bool operator!=( const alloc<T1> &, const alloc<T2> & ) { return false; }
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}
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#endif /* __SECMEM_SECMEMPP_H__ */
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