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/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include "Range.h"
#include <AK/Vector.h>
namespace UserspaceEmulator {
class RangeAllocator {
public:
RangeAllocator();
void initialize_with_range(VirtualAddress, size_t);
Optional<Range> allocate_anywhere(size_t, size_t alignment = PAGE_SIZE);
Optional<Range> allocate_specific(VirtualAddress, size_t);
Optional<Range> allocate_randomized(size_t, size_t alignment);
void deallocate(Range const&);
void reserve_user_range(VirtualAddress, size_t);
void dump() const;
bool contains(Range const& range) const { return m_total_range.contains(range); }
private:
void carve_at_index(int, Range const&);
Vector<Range> m_available_ranges;
Range m_total_range;
};
}
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