| 1 | // Copyright (C) 2025 Aurélien Brooke <aurelien@bahiasoft.fr> |
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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 | #include "qalloc.h" |
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| 5 | |
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| 6 | #include <QtCore/qalgorithms.h> |
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| 7 | #include <QtCore/qtpreprocessorsupport.h> |
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| 8 | |
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| 9 | #include <cstdlib> |
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| 10 | |
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| 11 | #if QT_CONFIG(jemalloc) |
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| 12 | #include <jemalloc/jemalloc.h> |
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| 13 | #endif |
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| 14 | |
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| 15 | QT_BEGIN_NAMESPACE |
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| 16 | |
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| 17 | size_t QtPrivate::expectedAllocSize(size_t allocSize, size_t alignment) noexcept |
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| 18 | { |
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| 19 | Q_ASSERT(qPopulationCount(alignment) == 1); |
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| 20 | #if QT_CONFIG(jemalloc) |
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| 21 | return ::nallocx(allocSize, MALLOCX_ALIGN(alignment)); |
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| 22 | #endif |
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| 23 | Q_UNUSED(allocSize); |
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| 24 | Q_UNUSED(alignment); |
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| 25 | return 0; |
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| 26 | } |
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| 27 | |
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| 28 | void QtPrivate::sizedFree(void *ptr, size_t allocSize) noexcept |
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| 29 | { |
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| 30 | #if QT_CONFIG(jemalloc) |
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| 31 | // jemalloc is okay with free(nullptr), as required by the standard, |
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| 32 | // but will asssert (in debug) or invoke UB (in release) on sdallocx(nullptr, ...), |
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| 33 | // so don't allow Qt to do that. |
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| 34 | if (Q_LIKELY(ptr)) { |
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| 35 | ::sdallocx(ptr, allocSize, 0); |
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| 36 | return; |
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| 37 | } |
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| 38 | #endif |
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| 39 | Q_UNUSED(allocSize); |
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| 40 | ::free(ptr: ptr); |
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| 41 | } |
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| 42 | |
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| 43 | QT_END_NAMESPACE |
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| 44 | |
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