| 1 | // Copyright (C) 2025 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QMEMORY_RESOURCE_TLSF_P_H |
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| 5 | #define QMEMORY_RESOURCE_TLSF_P_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists purely as an |
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| 12 | // implementation detail. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | #include <QtCore/qtclasshelpermacros.h> |
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| 19 | #include <QtMultimedia/private/q_pmr_emulation_p.h> |
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| 20 | |
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| 21 | #include <tlsf.h> |
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| 22 | |
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| 23 | QT_BEGIN_NAMESPACE |
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| 24 | |
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| 25 | namespace QtMultimediaPrivate { |
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| 26 | |
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| 27 | struct QTlsfMemoryResource final : pmr::memory_resource |
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| 28 | { |
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| 29 | explicit QTlsfMemoryResource(std::size_t preallocatedBytes, |
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| 30 | pmr::memory_resource *upstream = pmr::get_default_resource()); |
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| 31 | |
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| 32 | Q_DISABLE_COPY_MOVE(QTlsfMemoryResource) |
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| 33 | |
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| 34 | ~QTlsfMemoryResource() override; |
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| 35 | |
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| 36 | private: |
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| 37 | void *do_allocate(size_t bytes, size_t alignment) override; |
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| 38 | void do_deallocate(void *p, size_t bytes, size_t alignment) override; |
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| 39 | bool do_is_equal(const memory_resource &other) const noexcept override; |
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| 40 | |
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| 41 | // cache line alignment on most platforms |
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| 42 | static constexpr auto poolAlignment = std::align_val_t{ 128 }; |
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| 43 | |
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| 44 | QtPrivate::tlsf_t m_tlsf; |
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| 45 | const size_t m_allocationSize; |
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| 46 | std::byte *m_buffer = nullptr; |
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| 47 | pmr::memory_resource *m_upstream{}; |
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| 48 | }; |
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| 49 | |
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| 50 | } // namespace QtMultimediaPrivate |
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| 51 | |
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| 52 | QT_END_NAMESPACE |
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| 53 | |
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| 54 | #endif // QMEMORY_RESOURCE_TLSF_P_H |
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| 55 | |
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