102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* Copyright 2016-2018 Danny Robson <danny@nerdcruft.net>
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*/
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#pragma once
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#include "../../../std.hpp"
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#include "../../../debug.hpp"
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#include "../../../view.hpp"
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#include <utility>
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namespace cruft::alloc::raw::aligned {
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/// wraps a child allocator and enforces a fixed alignment
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template <typename ChildT>
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class direct {
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public:
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///////////////////////////////////////////////////////////////////////
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template <typename ...Args>
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direct (
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cruft::view<u08*> _data,
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std::size_t _alignment,
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Args &&...args
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)
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: m_successor (_data, std::forward<Args> (args)...)
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, m_alignment (_alignment)
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{ ; }
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///////////////////////////////////////////////////////////////////////
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auto allocate (std::size_t bytes)
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{
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return m_successor.allocate (bytes, m_alignment);
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}
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//---------------------------------------------------------------------
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auto allocate (std::size_t bytes, std::size_t alignment)
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{
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(void)alignment;
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return m_successor.allocate (bytes, m_alignment);
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}
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//---------------------------------------------------------------------
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auto deallocate (u08 *ptr, std::size_t bytes, std::size_t alignment)
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{
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(void)alignment;
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return m_successor.deallocate (ptr, bytes, m_alignment);
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}
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//---------------------------------------------------------------------
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auto deallocate (u08 *ptr, std::size_t bytes)
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{
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return m_successor.deallocate (ptr, bytes, m_alignment);
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}
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///////////////////////////////////////////////////////////////////////
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constexpr auto alignment (void) const noexcept { return m_alignment; }
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///////////////////////////////////////////////////////////////////////
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auto data (void) { return m_successor.data (); }
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//---------------------------------------------------------------------
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auto begin (void) { return m_successor.begin (); }
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auto begin (void) const { return m_successor.begin (); }
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auto end (void) { return m_successor.end (); }
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auto end (void) const { return m_successor.end (); }
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//---------------------------------------------------------------------
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auto
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offset (const void *ptr) const
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{
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return m_successor.offset (ptr);
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}
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///////////////////////////////////////////////////////////////////////
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auto reset (void) { return m_successor.reset (); }
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///////////////////////////////////////////////////////////////////////
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auto capacity (void) const { return m_successor.capacity (); }
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auto used (void) const { return m_successor.used (); }
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auto remain (void) const { return m_successor.remain (); }
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private:
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ChildT m_successor;
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std::size_t m_alignment;
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};
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}
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