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qt 6.5.1 original
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12
tests/benchmarks/corelib/tools/qsharedpointer/CMakeLists.txt
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12
tests/benchmarks/corelib/tools/qsharedpointer/CMakeLists.txt
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# Copyright (C) 2022 The Qt Company Ltd.
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# SPDX-License-Identifier: BSD-3-Clause
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qt_internal_add_benchmark(tst_bench_shared_ptr
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SOURCES
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tst_bench_shared_ptr.cpp
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INCLUDE_DIRECTORIES
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.
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LIBRARIES
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Qt::Core
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Qt::Test
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)
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// Copyright (C) 2021 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Marc Mutz <marc.mutz@kdab.com>
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// Copyright (C) 2022 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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#include <QObject>
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#include <QScopeGuard>
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#include <QSharedPointer>
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#include <QTest>
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#include <atomic>
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#include <memory>
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#include <thread>
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#include <vector>
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#if __has_include(<boost/shared_ptr.hpp>)
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# include <boost/shared_ptr.hpp>
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# include <boost/make_shared.hpp>
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# ifdef BOOST_NO_EXCEPTIONS
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// https://stackoverflow.com/a/9530546/134841
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// https://www.boost.org/doc/libs/1_79_0/libs/throw_exception/doc/html/throw_exception.html#throw_exception
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BOOST_NORETURN void boost::throw_exception(const std::exception &) { std::terminate(); }
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# if BOOST_VERSION >= 107300
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// https://www.boost.org/doc/libs/1_79_0/libs/throw_exception/doc/html/throw_exception.html#changes_in_1_73_0
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BOOST_NORETURN void boost::throw_exception(const std::exception &, const boost::source_location &)
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{ std::terminate(); }
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# endif // Boost v1.73
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# endif // BOOST_NO_EXCEPTIONS
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# define ONLY_IF_BOOST(x) x
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#else
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# define ONLY_IF_BOOST(x) QSKIP("This benchmark requires Boost.SharedPtr.")
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#endif
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class tst_QSharedPointer : public QObject
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{
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Q_OBJECT
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private Q_SLOTS:
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void refAndDeref_null_QSP_int() { refAndDeref<QSharedPointer<int>>(); }
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void refAndDeref_null_SSP_int() { refAndDeref<std::shared_ptr<int>>(); }
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void refAndDeref_null_BSP_int() { ONLY_IF_BOOST(refAndDeref<boost::shared_ptr<int>>()); }
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void refAndDeref_null_QSP_QString() { refAndDeref<QSharedPointer<QString>>(); }
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void refAndDeref_null_SSP_QString() { refAndDeref<std::shared_ptr<QString>>(); }
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void refAndDeref_null_BSP_QString() { ONLY_IF_BOOST(refAndDeref<boost::shared_ptr<QString>>()); }
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void refAndDeref_nonnull_QSP_int() { refAndDeref(QSharedPointer<int>::create(42)); }
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void refAndDeref_nonnull_SSP_int() { refAndDeref(std::make_shared<int>(42)); }
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void refAndDeref_nonnull_BSP_int() { ONLY_IF_BOOST(refAndDeref(boost::make_shared<int>(42))); }
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void refAndDeref_nonnull_QSP_QString() { refAndDeref(QSharedPointer<QString>::create(QStringLiteral("Hello"))); }
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void refAndDeref_nonnull_SSP_QString() { refAndDeref(std::make_shared<QString>(QStringLiteral("Hello"))); }
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void refAndDeref_nonnull_BSP_QString() { ONLY_IF_BOOST(refAndDeref(boost::make_shared<QString>(QStringLiteral("Hello")))); }
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private:
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template <typename SP>
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void refAndDeref(SP sp = {})
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{
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QBENCHMARK {
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[[maybe_unused]] auto copy = sp;
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}
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}
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private Q_SLOTS:
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void threadedRefAndDeref_null_QSP_int() { threadedRefAndDeref<QSharedPointer<int>>(); }
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void threadedRefAndDeref_null_SSP_int() { threadedRefAndDeref<std::shared_ptr<int>>(); }
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void threadedRefAndDeref_null_BSP_int() { ONLY_IF_BOOST(threadedRefAndDeref<boost::shared_ptr<int>>()); }
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void threadedRefAndDeref_null_QSP_QString() { threadedRefAndDeref<QSharedPointer<QString>>(); }
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void threadedRefAndDeref_null_SSP_QString() { threadedRefAndDeref<std::shared_ptr<QString>>(); }
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void threadedRefAndDeref_null_BSP_QString() { ONLY_IF_BOOST(threadedRefAndDeref<boost::shared_ptr<QString>>()); }
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void threadedRefAndDeref_nonnull_QSP_int() { threadedRefAndDeref(QSharedPointer<int>::create(42)); }
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void threadedRefAndDeref_nonnull_SSP_int() { threadedRefAndDeref(std::make_shared<int>(42)); }
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void threadedRefAndDeref_nonnull_BSP_int() { ONLY_IF_BOOST(threadedRefAndDeref(boost::make_shared<int>(42))); }
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void threadedRefAndDeref_nonnull_QSP_QString() { threadedRefAndDeref(QSharedPointer<QString>::create(QStringLiteral("Hello"))); }
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void threadedRefAndDeref_nonnull_SSP_QString() { threadedRefAndDeref(std::make_shared<QString>(QStringLiteral("Hello"))); }
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void threadedRefAndDeref_nonnull_BSP_QString() { ONLY_IF_BOOST(threadedRefAndDeref(boost::make_shared<QString>(QStringLiteral("Hello")))); }
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private:
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template <typename SP>
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void threadedRefAndDeref(SP sp = {})
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{
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std::atomic<bool> cancel = false;
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std::vector<std::thread> threads;
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const auto numCores = std::max(2U, std::thread::hardware_concurrency());
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for (uint i = 0; i < numCores - 1; ++i) {
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threads.emplace_back([sp, &cancel] {
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while (!cancel.load(std::memory_order_relaxed)) {
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for (int i = 0; i < 100; ++i)
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[[maybe_unused]] auto copy = sp;
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}
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});
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}
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const auto join = qScopeGuard([&] {
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cancel.store(true, std::memory_order_relaxed);
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for (auto &t : threads)
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t.join();
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});
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QBENCHMARK {
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[[maybe_unused]] auto copy = sp;
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}
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}
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};
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QTEST_MAIN(tst_QSharedPointer)
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#include "tst_bench_shared_ptr.moc"
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