mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-05-01 03:57:15 +02:00
716e5f72f2
Before this change, we'd use the system page size as the HeapBlock size. This caused it to vary on different platforms, going as low as 4 KiB on most Linux systems. To make this work, we now use posix_memalign() to ensure we get size-aligned allocations on every platform. Also nice: HeapBlock::BLOCK_SIZE is now a constant.
39 lines
745 B
C++
39 lines
745 B
C++
/*
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* Copyright (c) 2020-2025, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2020-2023, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Types.h>
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#include <LibGC/Export.h>
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#include <LibGC/Forward.h>
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namespace GC {
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class GC_API HeapBlockBase {
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AK_MAKE_NONMOVABLE(HeapBlockBase);
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AK_MAKE_NONCOPYABLE(HeapBlockBase);
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public:
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static constexpr size_t BLOCK_SIZE = 16 * KiB;
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static HeapBlockBase* from_cell(Cell const* cell)
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{
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return reinterpret_cast<HeapBlockBase*>(bit_cast<FlatPtr>(cell) & ~(BLOCK_SIZE - 1));
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}
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Heap& heap() { return m_heap; }
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protected:
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HeapBlockBase(Heap& heap)
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: m_heap(heap)
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{
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}
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Heap& m_heap;
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};
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}
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