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// Copyright (C) 2025 Aurélien Brooke <aurelien@bahiasoft.fr>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qalloc.h"
#include <QtCore/qalgorithms.h>
#include <QtCore/qtpreprocessorsupport.h>
#include <cstdlib>
#if QT_CONFIG(jemalloc)
#include <jemalloc/jemalloc.h>
#endif
QT_BEGIN_NAMESPACE
size_t QtPrivate::expectedAllocSize(size_t allocSize, size_t alignment) noexcept
{
Q_ASSERT(qPopulationCount(alignment) == 1);
#if QT_CONFIG(jemalloc)
return ::nallocx(allocSize, MALLOCX_ALIGN(alignment));
#endif
Q_UNUSED(allocSize);
Q_UNUSED(alignment);
return 0;
}
void QtPrivate::sizedFree(void *ptr, size_t allocSize) noexcept
{
#if QT_CONFIG(jemalloc)
// jemalloc is okay with free(nullptr), as required by the standard,
// but will asssert (in debug) or invoke UB (in release) on sdallocx(nullptr, ...),
// so don't allow Qt to do that.
if (Q_LIKELY(ptr)) {
::sdallocx(ptr, allocSize, 0);
return;
}
#endif
Q_UNUSED(allocSize);
::free(ptr);
}
QT_END_NAMESPACE
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