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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/IntrusiveList.h>
#include <AK/NonnullOwnPtr.h>
#include <AK/Vector.h>
#include <LibJS/Forward.h>
#include <LibJS/Heap/HeapBlock.h>
namespace JS {
class CellAllocator {
public:
explicit CellAllocator(size_t cell_size);
~CellAllocator() = default;
size_t cell_size() const { return m_cell_size; }
Cell* allocate_cell(Heap&);
template<typename Callback>
IterationDecision for_each_block(Callback callback)
{
for (auto& block : m_full_blocks) {
if (callback(block) == IterationDecision::Break)
return IterationDecision::Break;
}
for (auto& block : m_usable_blocks) {
if (callback(block) == IterationDecision::Break)
return IterationDecision::Break;
}
return IterationDecision::Continue;
}
void block_did_become_empty(Badge<Heap>, HeapBlock&);
void block_did_become_usable(Badge<Heap>, HeapBlock&);
private:
const size_t m_cell_size;
using BlockList = IntrusiveList<&HeapBlock::m_list_node>;
BlockList m_full_blocks;
BlockList m_usable_blocks;
};
}
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