45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
/*
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* Slab Allocator
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*
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* Copyright (C) 2009-2011 Udo Steinberg <udo@hypervisor.org>
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* Economic rights: Technische Universitaet Dresden (Germany)
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*
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* Copyright (C) 2012-2013 Udo Steinberg, Intel Corporation.
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* Copyright (C) 2019-2025 Udo Steinberg, BlueRock Security, Inc.
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*
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* This file is part of the NOVA microhypervisor.
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*
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* NOVA is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* NOVA 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 version 2 for more details.
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*/
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#pragma once
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#include "initprio.hpp"
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#include "spinlock.hpp"
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class Slab_cache final
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{
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private:
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struct Slab;
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uint16_t const bsz; // Buffer size
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uint16_t const bps; // Buffers per Slab
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Slab * curr { nullptr }; // Current (Partial) Slab
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Slab * head { nullptr }; // Head of Slab List
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Spinlock lock; // Allocator Spinlock
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public:
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[[nodiscard]] void *alloc();
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void free (void *);
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Slab_cache (size_t, size_t);
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};
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