qt 6.5.1 original

tests/auto/corelib/thread/qatomicint/CMakeLists.txt

@@ -0,0 +1,11 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## tst_qatomicint Test:
+#####################################################################
+
+qt_internal_add_test(tst_qatomicint
+    SOURCES
+        tst_qatomicint.cpp
+)

tests/auto/corelib/thread/qatomicint/tst_qatomicint.cpp

@@ -0,0 +1,875 @@
+// Copyright (C) 2016 The Qt Company Ltd.
+// Copyright (C) 2016 Intel Corporation.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include <QTest>
+
+#include <QAtomicInt>
+#include <QCoreApplication>
+#include <QElapsedTimer>
+
+#include <limits.h>
+
+class tst_QAtomicInt : public QObject
+{
+    Q_OBJECT
+
+private slots:
+    void warningFree();
+    void alignment();
+
+    // QAtomicInt members
+    void constructor_data();
+    void constructor();
+    void copy_constructor_data();
+    void copy_constructor();
+    void assignment_operator_data();
+    void assignment_operator();
+
+    void isReferenceCountingNative();
+    void isReferenceCountingWaitFree();
+    void ref_data();
+    void ref();
+    void deref_data();
+    void deref();
+
+    void isTestAndSetNative();
+    void isTestAndSetWaitFree();
+    void testAndSet_data();
+    void testAndSet();
+
+    void isFetchAndStoreNative();
+    void isFetchAndStoreWaitFree();
+    void fetchAndStore_data();
+    void fetchAndStore();
+
+    void isFetchAndAddNative();
+    void isFetchAndAddWaitFree();
+    void fetchAndAdd_data();
+    void fetchAndAdd();
+
+    void operators();
+
+    // stress tests
+    void testAndSet_loop();
+    void fetchAndAdd_loop();
+    void fetchAndAdd_threadedLoop();
+
+private:
+    static void warningFreeHelper();
+};
+
+template <int I>
+static inline void assemblyMarker(void *ptr = nullptr)
+{
+    puts((char *)ptr + I);
+}
+
+template <typename  T, typename Atomic>
+static void warningFreeHelperTemplate()
+{
+    T expectedValue = 0;
+    T newValue = 0;
+    T valueToAdd = 0;
+
+    // the marker calls are here only to provide a divider for
+    // those reading the assembly output
+    assemblyMarker<0>();
+    Atomic i = Q_BASIC_ATOMIC_INITIALIZER(0);
+    printf("%d\n", int(i.loadAcquire()));
+    assemblyMarker<1>(&i);
+
+    // the loads sometimes generate no assembly output
+    i.loadRelaxed();
+    assemblyMarker<11>(&i);
+    i.loadAcquire();
+    assemblyMarker<12>(&i);
+
+    i.storeRelaxed(newValue);
+    assemblyMarker<21>(&i);
+    i.storeRelease(newValue);
+    assemblyMarker<22>(&i);
+
+    i.ref();
+    assemblyMarker<31>(&i);
+    i.deref();
+    assemblyMarker<32>(&i);
+
+    i.testAndSetRelaxed(expectedValue, newValue);
+    assemblyMarker<41>(&i);
+    i.testAndSetAcquire(expectedValue, newValue);
+    assemblyMarker<42>(&i);
+    i.testAndSetRelease(expectedValue, newValue);
+    assemblyMarker<43>(&i);
+    i.testAndSetOrdered(expectedValue, newValue);
+    assemblyMarker<44>(&i);
+
+    i.fetchAndStoreRelaxed(newValue);
+    assemblyMarker<51>(&i);
+    i.fetchAndStoreAcquire(newValue);
+    assemblyMarker<52>(&i);
+    i.fetchAndStoreRelease(newValue);
+    assemblyMarker<53>(&i);
+    i.fetchAndStoreOrdered(newValue);
+    assemblyMarker<54>(&i);
+
+    i.fetchAndAddRelaxed(valueToAdd);
+    assemblyMarker<61>(&i);
+    i.fetchAndAddAcquire(valueToAdd);
+    assemblyMarker<62>(&i);
+    i.fetchAndAddRelease(valueToAdd);
+    assemblyMarker<63>(&i);
+    i.fetchAndAddOrdered(valueToAdd);
+    assemblyMarker<64>(&i);
+}
+
+template <bool> inline void booleanHelper()
+{ }
+
+template <typename Atomic>
+static void constexprFunctionsHelperTemplate()
+{
+    // this is a compile-time test only
+    booleanHelper<Atomic::isReferenceCountingWaitFree()>();
+    booleanHelper<Atomic::isTestAndSetWaitFree()>();
+    booleanHelper<Atomic::isFetchAndStoreWaitFree()>();
+    booleanHelper<Atomic::isFetchAndAddWaitFree()>();
+}
+
+void tst_QAtomicInt::warningFreeHelper()
+{
+    qFatal("This code is bogus, and shouldn't be run. We're looking for compiler warnings only.");
+    warningFreeHelperTemplate<int, QBasicAtomicInt>();
+
+    // 32-bit are always supported:
+    warningFreeHelperTemplate<int, QBasicAtomicInteger<int> >();
+    warningFreeHelperTemplate<unsigned int, QBasicAtomicInteger<unsigned int> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<int> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<unsigned int> >();
+    warningFreeHelperTemplate<qint16, QBasicAtomicInteger<char32_t> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<char32_t> >();
+
+    // pointer-sized integers are always supported:
+    warningFreeHelperTemplate<int, QBasicAtomicInteger<qptrdiff> >();
+    warningFreeHelperTemplate<unsigned int, QBasicAtomicInteger<quintptr> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<qptrdiff> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<quintptr> >();
+
+    // long is always supported because it's either 32-bit or pointer-sized:
+    warningFreeHelperTemplate<int, QBasicAtomicInteger<long int> >();
+    warningFreeHelperTemplate<unsigned int, QBasicAtomicInteger<unsigned long int> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<long int> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<unsigned long int> >();
+
+    warningFreeHelperTemplate<qint16, QBasicAtomicInteger<qint16> >();
+    warningFreeHelperTemplate<quint16, QBasicAtomicInteger<quint16> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<qint16> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<quint16> >();
+    warningFreeHelperTemplate<qint16, QBasicAtomicInteger<char16_t> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<char16_t> >();
+
+    warningFreeHelperTemplate<char, QBasicAtomicInteger<char> >();
+    warningFreeHelperTemplate<signed char, QBasicAtomicInteger<signed char> >();
+    warningFreeHelperTemplate<unsigned char, QBasicAtomicInteger<unsigned char> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<char> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<signed char> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<unsigned char> >();
+
+#ifdef Q_ATOMIC_INT64_IS_SUPPORTED
+#if !defined(__i386__) || (defined(Q_CC_GNU) && defined(__OPTIMIZE__))
+    warningFreeHelperTemplate<qlonglong, QBasicAtomicInteger<qlonglong> >();
+    warningFreeHelperTemplate<qulonglong, QBasicAtomicInteger<qulonglong> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<qlonglong> >();
+    constexprFunctionsHelperTemplate<QBasicAtomicInteger<qulonglong> >();
+#endif
+#endif
+}
+
+void tst_QAtomicInt::warningFree()
+{
+    // This is a compile time check for warnings.
+    // No need for actual work here.
+
+    void (*foo)() = &warningFreeHelper;
+    (void)foo;
+}
+
+template <typename T> struct TypeInStruct { T type; };
+
+void tst_QAtomicInt::alignment()
+{
+    static_assert(alignof(QBasicAtomicInt) == alignof(TypeInStruct<int>));
+    static_assert(alignof(QBasicAtomicInt) == alignof(TypeInStruct<int>));
+
+    QCOMPARE(alignof(QBasicAtomicInteger<int>), alignof(TypeInStruct<int>));
+    QCOMPARE(alignof(QBasicAtomicInteger<short>), alignof(TypeInStruct<short>));
+    QCOMPARE(alignof(QBasicAtomicInteger<char>), alignof(TypeInStruct<char>));
+
+#if !defined(Q_PROCESSOR_X86_32) && defined(Q_ATOMIC_INT64_IS_SUPPORTED)
+    // The alignment is different on x86_32
+    QCOMPARE(alignof(QBasicAtomicInteger<qlonglong>), alignof(TypeInStruct<qlonglong>));
+#endif
+}
+
+void tst_QAtomicInt::constructor_data()
+{
+    QTest::addColumn<int>("value");
+
+    QTest::newRow("0") << 31337;
+    QTest::newRow("1") << 0;
+    QTest::newRow("2") << 1;
+    QTest::newRow("3") << -1;
+    QTest::newRow("4") << 2;
+    QTest::newRow("5") << -2;
+    QTest::newRow("6") << 3;
+    QTest::newRow("7") << -3;
+    QTest::newRow("8") << INT_MAX;
+    QTest::newRow("9") << INT_MIN+1;
+}
+
+void tst_QAtomicInt::constructor()
+{
+    QFETCH(int, value);
+    QAtomicInt atomic1(value);
+    QCOMPARE(atomic1.loadRelaxed(), value);
+    QAtomicInt atomic2 = value;
+    QCOMPARE(atomic2.loadRelaxed(), value);
+}
+
+void tst_QAtomicInt::copy_constructor_data()
+{ constructor_data(); }
+
+void tst_QAtomicInt::copy_constructor()
+{
+    QFETCH(int, value);
+    QAtomicInt atomic1(value);
+    QCOMPARE(atomic1.loadRelaxed(), value);
+
+    QAtomicInt atomic2(atomic1);
+    QCOMPARE(atomic2.loadRelaxed(), value);
+    QAtomicInt atomic3 = atomic1;
+    QCOMPARE(atomic3.loadRelaxed(), value);
+    QAtomicInt atomic4(atomic2);
+    QCOMPARE(atomic4.loadRelaxed(), value);
+    QAtomicInt atomic5 = atomic2;
+    QCOMPARE(atomic5.loadRelaxed(), value);
+}
+
+void tst_QAtomicInt::assignment_operator_data()
+{
+    QTest::addColumn<int>("value");
+    QTest::addColumn<int>("newval");
+
+    QTest::newRow("value0") <<  0 <<  1;
+    QTest::newRow("value1") <<  1 <<  0;
+    QTest::newRow("value2") <<  0 << -1;
+    QTest::newRow("value3") << -1 <<  0;
+    QTest::newRow("value4") << -1 <<  1;
+    QTest::newRow("value5") <<  1 << -1;
+}
+
+void tst_QAtomicInt::assignment_operator()
+{
+    QFETCH(int, value);
+    QFETCH(int, newval);
+
+    {
+        QAtomicInt atomic1 = value;
+        atomic1 = newval;
+        QCOMPARE(atomic1.loadRelaxed(), newval);
+        atomic1 = value;
+        QCOMPARE(atomic1.loadRelaxed(), value);
+
+        QAtomicInt atomic2 = newval;
+        atomic1 = atomic2;
+        QCOMPARE(atomic1.loadRelaxed(), atomic2.loadRelaxed());
+    }
+}
+
+void tst_QAtomicInt::isReferenceCountingNative()
+{
+#if defined(Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE)
+    // the runtime test should say the same thing
+    QVERIFY(QAtomicInt::isReferenceCountingNative());
+
+#  if (defined(Q_ATOMIC_INT_REFERENCE_COUNTING_IS_SOMETIMES_NATIVE)     \
+       || defined(Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_REFERENCE_COUNTING_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#elif defined(Q_ATOMIC_INT_REFERENCE_COUNTING_IS_SOMETIMES_NATIVE)
+    // could be either, just want to make sure the function is implemented
+    QVERIFY(QAtomicInt::isReferenceCountingNative() || !QAtomicInt::isReferenceCountingNative());
+
+#  if (defined(Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE) \
+       || defined(Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_REFERENCE_COUNTING_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#elif defined(Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE)
+    // the runtime test should say the same thing
+    QVERIFY(!QAtomicInt::isReferenceCountingNative());
+
+#  if (defined(Q_ATOMIC_INT_REFERENCE_COUNTING_IS_ALWAYS_NATIVE) \
+       || defined(Q_ATOMIC_INT_REFERENCE_COUNTING_IS_SOMETIMES_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_REFERENCE_COUNTING_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#else
+#  error "Q_ATOMIC_INT_REFERENCE_COUNTING_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE is not defined"
+#endif
+}
+
+void tst_QAtomicInt::isReferenceCountingWaitFree()
+{
+#if defined(Q_ATOMIC_INT_REFERENCE_COUNTING_IS_WAIT_FREE)
+    // the runtime test should say the same thing
+    QVERIFY(QAtomicInt::isReferenceCountingWaitFree());
+
+    // enforce some invariants
+    QVERIFY(QAtomicInt::isReferenceCountingNative());
+#  if defined(Q_ATOMIC_INT_REFERENCE_COUNTING_IS_NOT_NATIVE)
+#    error "Reference counting cannot be wait-free and unsupported at the same time!"
+#  endif
+#else
+    // the runtime test should say the same thing
+    QVERIFY(!QAtomicInt::isReferenceCountingWaitFree());
+#endif
+}
+
+void tst_QAtomicInt::ref_data()
+{
+    QTest::addColumn<int>("value");
+    QTest::addColumn<int>("result");
+    QTest::addColumn<int>("expected");
+
+    QTest::newRow("data0") <<  0 << 1 << 1;
+    QTest::newRow("data1") << -1 << 0 << 0;
+    QTest::newRow("data2") <<  1 << 1 << 2;
+}
+
+void tst_QAtomicInt::ref()
+{
+    QFETCH(int, value);
+    QAtomicInt x = value;
+    QTEST(x.ref() ? 1 : 0, "result");
+    QTEST(x.loadRelaxed(), "expected");
+}
+
+void tst_QAtomicInt::deref_data()
+{
+    QTest::addColumn<int>("value");
+    QTest::addColumn<int>("result");
+    QTest::addColumn<int>("expected");
+
+    QTest::newRow("data0") <<  0 << 1 << -1;
+    QTest::newRow("data1") <<  1 << 0 <<  0;
+    QTest::newRow("data2") <<  2 << 1 <<  1;
+}
+
+void tst_QAtomicInt::deref()
+{
+    QFETCH(int, value);
+    QAtomicInt x = value;
+    QTEST(x.deref() ? 1 : 0, "result");
+    QTEST(x.loadRelaxed(), "expected");
+}
+
+void tst_QAtomicInt::isTestAndSetNative()
+{
+#if defined(Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE)
+    // the runtime test should say the same thing
+    QVERIFY(QAtomicInt::isTestAndSetNative());
+
+#  if (defined(Q_ATOMIC_INT_TEST_AND_SET_IS_SOMETIMES_NATIVE)     \
+       || defined(Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_TEST_AND_SET_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#elif defined(Q_ATOMIC_INT_TEST_AND_SET_IS_SOMETIMES_NATIVE)
+    // could be either, just want to make sure the function is implemented
+    QVERIFY(QAtomicInt::isTestAndSetNative() || !QAtomicInt::isTestAndSetNative());
+
+#  if (defined(Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE) \
+       || defined(Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_TEST_AND_SET_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#elif defined(Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE)
+    // the runtime test should say the same thing
+    QVERIFY(!QAtomicInt::isTestAndSetNative());
+
+#  if (defined(Q_ATOMIC_INT_TEST_AND_SET_IS_ALWAYS_NATIVE) \
+       || defined(Q_ATOMIC_INT_TEST_AND_SET_IS_SOMETIMES_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_TEST_AND_SET_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#else
+#  error "Q_ATOMIC_INT_TEST_AND_SET_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE is not defined"
+#endif
+}
+
+void tst_QAtomicInt::isTestAndSetWaitFree()
+{
+#if defined(Q_ATOMIC_INT_TEST_AND_SET_IS_WAIT_FREE)
+    // the runtime test should say the same thing
+    QVERIFY(QAtomicInt::isTestAndSetWaitFree());
+
+    // enforce some invariants
+    QVERIFY(QAtomicInt::isTestAndSetNative());
+#  if defined(Q_ATOMIC_INT_TEST_AND_SET_IS_NOT_NATIVE)
+#    error "Reference counting cannot be wait-free and unsupported at the same time!"
+#  endif
+#else
+    // the runtime test should say the same thing
+    QVERIFY(!QAtomicInt::isTestAndSetWaitFree());
+#endif
+}
+
+void tst_QAtomicInt::testAndSet_data()
+{
+    QTest::addColumn<int>("value");
+    QTest::addColumn<int>("expected");
+    QTest::addColumn<int>("newval");
+    QTest::addColumn<bool>("result");
+
+    // these should succeed
+    QTest::newRow("success0") <<         0 <<         0 <<         0 << true;
+    QTest::newRow("success1") <<         0 <<         0 <<         1 << true;
+    QTest::newRow("success2") <<         0 <<         0 <<        -1 << true;
+    QTest::newRow("success3") <<         1 <<         1 <<         0 << true;
+    QTest::newRow("success4") <<         1 <<         1 <<         1 << true;
+    QTest::newRow("success5") <<         1 <<         1 <<        -1 << true;
+    QTest::newRow("success6") <<        -1 <<        -1 <<         0 << true;
+    QTest::newRow("success7") <<        -1 <<        -1 <<         1 << true;
+    QTest::newRow("success8") <<        -1 <<        -1 <<        -1 << true;
+    QTest::newRow("success9") << INT_MIN+1 << INT_MIN+1 << INT_MIN+1 << true;
+    QTest::newRow("successA") << INT_MIN+1 << INT_MIN+1 <<         1 << true;
+    QTest::newRow("successB") << INT_MIN+1 << INT_MIN+1 <<        -1 << true;
+    QTest::newRow("successC") << INT_MAX   << INT_MAX   << INT_MAX   << true;
+    QTest::newRow("successD") << INT_MAX   << INT_MAX   <<         1 << true;
+    QTest::newRow("successE") << INT_MAX   << INT_MAX   <<        -1 << true;
+
+    // these should fail
+    QTest::newRow("failure0") <<       0   <<       1   <<        ~0 << false;
+    QTest::newRow("failure1") <<       0   <<      -1   <<        ~0 << false;
+    QTest::newRow("failure2") <<       1   <<       0   <<        ~0 << false;
+    QTest::newRow("failure3") <<      -1   <<       0   <<        ~0 << false;
+    QTest::newRow("failure4") <<       1   <<      -1   <<        ~0 << false;
+    QTest::newRow("failure5") <<      -1   <<       1   <<        ~0 << false;
+    QTest::newRow("failure6") << INT_MIN+1 << INT_MAX   <<        ~0 << false;
+    QTest::newRow("failure7") << INT_MAX   << INT_MIN+1 <<        ~0 << false;
+}
+
+void tst_QAtomicInt::testAndSet()
+{
+    QFETCH(int, value);
+    QFETCH(int, expected);
+    QFETCH(int, newval);
+
+    {
+        QAtomicInt atomic = value;
+        QTEST(atomic.testAndSetRelaxed(expected, newval), "result");
+    }
+
+    {
+        QAtomicInt atomic = value;
+        QTEST(atomic.testAndSetAcquire(expected, newval), "result");
+    }
+
+    {
+        QAtomicInt atomic = value;
+        QTEST(atomic.testAndSetRelease(expected, newval), "result");
+    }
+
+    {
+        QAtomicInt atomic = value;
+        QTEST(atomic.testAndSetOrdered(expected, newval), "result");
+    }
+
+    QFETCH(bool, result);
+    // the new implementation has the version that loads the current value
+
+    {
+        QAtomicInt atomic = value;
+        int currentval = 0xdeadbeef;
+        QCOMPARE(atomic.testAndSetRelaxed(expected, newval, currentval), result);
+        if (!result)
+            QCOMPARE(currentval, value);
+    }
+
+    {
+        QAtomicInt atomic = value;
+        int currentval = 0xdeadbeef;
+        QCOMPARE(atomic.testAndSetAcquire(expected, newval, currentval), result);
+        if (!result)
+            QCOMPARE(currentval, value);
+    }
+
+    {
+        QAtomicInt atomic = value;
+        int currentval = 0xdeadbeef;
+        QCOMPARE(atomic.testAndSetRelease(expected, newval, currentval), result);
+        if (!result)
+            QCOMPARE(currentval, value);
+    }
+
+    {
+        QAtomicInt atomic = value;
+        int currentval = 0xdeadbeef;
+        QCOMPARE(atomic.testAndSetOrdered(expected, newval, currentval), result);
+        if (!result)
+            QCOMPARE(currentval, value);
+    }
+}
+
+void tst_QAtomicInt::isFetchAndStoreNative()
+{
+#if defined(Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE)
+    // the runtime test should say the same thing
+    QVERIFY(QAtomicInt::isFetchAndStoreNative());
+
+#  if (defined(Q_ATOMIC_INT_FETCH_AND_STORE_IS_SOMETIMES_NATIVE)     \
+       || defined(Q_ATOMIC_INT_FETCH_AND_STORE_IS_NOT_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_FETCH_AND_STORE_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#elif defined(Q_ATOMIC_INT_FETCH_AND_STORE_IS_SOMETIMES_NATIVE)
+    // could be either, just want to make sure the function is implemented
+    QVERIFY(QAtomicInt::isFetchAndStoreNative() || !QAtomicInt::isFetchAndStoreNative());
+
+#  if (defined(Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE) \
+       || defined(Q_ATOMIC_INT_FETCH_AND_STORE_IS_NOT_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_FETCH_AND_STORE_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#elif defined(Q_ATOMIC_INT_FETCH_AND_STORE_IS_NOT_NATIVE)
+    // the runtime test should say the same thing
+    QVERIFY(!QAtomicInt::isFetchAndStoreNative());
+
+#  if (defined(Q_ATOMIC_INT_FETCH_AND_STORE_IS_ALWAYS_NATIVE) \
+       || defined(Q_ATOMIC_INT_FETCH_AND_STORE_IS_SOMETIMES_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_FETCH_AND_STORE_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#else
+#  error "Q_ATOMIC_INT_FETCH_AND_STORE_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE is not defined"
+#endif
+}
+
+void tst_QAtomicInt::isFetchAndStoreWaitFree()
+{
+#if defined(Q_ATOMIC_INT_FETCH_AND_STORE_IS_WAIT_FREE)
+    // the runtime test should say the same thing
+    QVERIFY(QAtomicInt::isFetchAndStoreWaitFree());
+
+    // enforce some invariants
+    QVERIFY(QAtomicInt::isFetchAndStoreNative());
+#  if defined(Q_ATOMIC_INT_FETCH_AND_STORE_IS_NOT_NATIVE)
+#    error "Reference counting cannot be wait-free and unsupported at the same time!"
+#  endif
+#else
+    // the runtime test should say the same thing
+    QVERIFY(!QAtomicInt::isFetchAndStoreWaitFree());
+#endif
+}
+
+void tst_QAtomicInt::fetchAndStore_data()
+{
+    QTest::addColumn<int>("value");
+    QTest::addColumn<int>("newval");
+
+    QTest::newRow("data0") << 0 << 1;
+    QTest::newRow("data1") << 1 << 2;
+    QTest::newRow("data2") << 3 << 8;
+}
+
+void tst_QAtomicInt::fetchAndStore()
+{
+    QFETCH(int, value);
+    QFETCH(int, newval);
+
+    {
+        QAtomicInt atomic = value;
+        QCOMPARE(atomic.fetchAndStoreRelaxed(newval), value);
+        QCOMPARE(atomic.loadRelaxed(), newval);
+    }
+
+    {
+        QAtomicInt atomic = value;
+        QCOMPARE(atomic.fetchAndStoreAcquire(newval), value);
+        QCOMPARE(atomic.loadRelaxed(), newval);
+    }
+
+    {
+        QAtomicInt atomic = value;
+        QCOMPARE(atomic.fetchAndStoreRelease(newval), value);
+        QCOMPARE(atomic.loadRelaxed(), newval);
+    }
+
+    {
+        QAtomicInt atomic = value;
+        QCOMPARE(atomic.fetchAndStoreOrdered(newval), value);
+        QCOMPARE(atomic.loadRelaxed(), newval);
+    }
+}
+
+void tst_QAtomicInt::isFetchAndAddNative()
+{
+#if defined(Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE)
+    // the runtime test should say the same thing
+    QVERIFY(QAtomicInt::isFetchAndAddNative());
+
+#  if (defined(Q_ATOMIC_INT_FETCH_AND_ADD_IS_SOMETIMES_NATIVE)     \
+       || defined(Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_FETCH_AND_ADD_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#elif defined(Q_ATOMIC_INT_FETCH_AND_ADD_IS_SOMETIMES_NATIVE)
+    // could be either, just want to make sure the function is implemented
+    QVERIFY(QAtomicInt::isFetchAndAddNative() || !QAtomicInt::isFetchAndAddNative());
+
+#  if (defined(Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE) \
+       || defined(Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_FETCH_AND_ADD_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#elif defined(Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE)
+    // the runtime test should say the same thing
+    QVERIFY(!QAtomicInt::isFetchAndAddNative());
+
+#  if (defined(Q_ATOMIC_INT_FETCH_AND_ADD_IS_ALWAYS_NATIVE) \
+       || defined(Q_ATOMIC_INT_FETCH_AND_ADD_IS_SOMETIMES_NATIVE))
+#    error "Define only one of Q_ATOMIC_INT_FETCH_AND_ADD_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE"
+#  endif
+#else
+#  error "Q_ATOMIC_INT_FETCH_AND_ADD_IS_{ALWAYS,SOMTIMES,NOT}_NATIVE is not defined"
+#endif
+}
+
+void tst_QAtomicInt::isFetchAndAddWaitFree()
+{
+#if defined(Q_ATOMIC_INT_FETCH_AND_ADD_IS_WAIT_FREE)
+    // the runtime test should say the same thing
+    QVERIFY(QAtomicInt::isFetchAndAddWaitFree());
+
+    // enforce some invariants
+    QVERIFY(QAtomicInt::isFetchAndAddNative());
+#  if defined(Q_ATOMIC_INT_FETCH_AND_ADD_IS_NOT_NATIVE)
+#    error "Reference counting cannot be wait-free and unsupported at the same time!"
+#  endif
+#else
+    // the runtime test should say the same thing
+    QVERIFY(!QAtomicInt::isFetchAndAddWaitFree());
+#endif
+}
+
+void tst_QAtomicInt::fetchAndAdd_data()
+{
+    QTest::addColumn<int>("value1");
+    QTest::addColumn<int>("value2");
+
+    QTest::newRow("0+1") << 0 << 1;
+    QTest::newRow("1+0") << 1 << 0;
+    QTest::newRow("1+2") << 1 << 2;
+    QTest::newRow("2+1") << 2 << 1;
+    QTest::newRow("10+21") << 10 << 21;
+    QTest::newRow("31+40") << 31 << 40;
+    QTest::newRow("51+62") << 51 << 62;
+    QTest::newRow("72+81") << 72 << 81;
+    QTest::newRow("810+721") << 810 << 721;
+    QTest::newRow("631+540") << 631 << 540;
+    QTest::newRow("451+362") << 451 << 362;
+    QTest::newRow("272+181") << 272 << 181;
+    QTest::newRow("1810+8721") << 1810 << 8721;
+    QTest::newRow("3631+6540") << 3631 << 6540;
+    QTest::newRow("5451+4362") << 5451 << 4362;
+    QTest::newRow("7272+2181") << 7272 << 2181;
+
+    QTest::newRow("0+-1") << 0 << -1;
+    QTest::newRow("1+-2") << 1 << -2;
+    QTest::newRow("2+-1") << 2 << -1;
+    QTest::newRow("10+-21") << 10 << -21;
+    QTest::newRow("31+-40") << 31 << -40;
+    QTest::newRow("51+-62") << 51 << -62;
+    QTest::newRow("72+-81") << 72 << -81;
+    QTest::newRow("810+-721") << 810 << -721;
+    QTest::newRow("631+-540") << 631 << -540;
+    QTest::newRow("451+-362") << 451 << -362;
+    QTest::newRow("272+-181") << 272 << -181;
+    QTest::newRow("1810+-8721") << 1810 << -8721;
+    QTest::newRow("3631+-6540") << 3631 << -6540;
+    QTest::newRow("5451+-4362") << 5451 << -4362;
+    QTest::newRow("7272+-2181") << 7272 << -2181;
+
+    QTest::newRow("-1+0") << -1 << 0;
+    QTest::newRow("-1+2") << -1 << 2;
+    QTest::newRow("-2+1") << -2 << 1;
+    QTest::newRow("-10+21") << -10 << 21;
+    QTest::newRow("-31+40") << -31 << 40;
+    QTest::newRow("-51+62") << -51 << 62;
+    QTest::newRow("-72+81") << -72 << 81;
+    QTest::newRow("-810+721") << -810 << 721;
+    QTest::newRow("-631+540") << -631 << 540;
+    QTest::newRow("-451+362") << -451 << 362;
+    QTest::newRow("-272+181") << -272 << 181;
+    QTest::newRow("-1810+8721") << -1810 << 8721;
+    QTest::newRow("-3631+6540") << -3631 << 6540;
+    QTest::newRow("-5451+4362") << -5451 << 4362;
+    QTest::newRow("-7272+2181") << -7272 << 2181;
+}
+
+void tst_QAtomicInt::fetchAndAdd()
+{
+    QFETCH(int, value1);
+    QFETCH(int, value2);
+    int result;
+
+    {
+        QAtomicInt atomic = value1;
+        result = atomic.fetchAndAddRelaxed(value2);
+        QCOMPARE(result, value1);
+        QCOMPARE(atomic.loadRelaxed(), value1 + value2);
+    }
+
+    {
+        QAtomicInt atomic = value1;
+        result = atomic.fetchAndAddAcquire(value2);
+        QCOMPARE(result, value1);
+        QCOMPARE(atomic.loadRelaxed(), value1 + value2);
+    }
+
+    {
+        QAtomicInt atomic = value1;
+        result = atomic.fetchAndAddRelease(value2);
+        QCOMPARE(result, value1);
+        QCOMPARE(atomic.loadRelaxed(), value1 + value2);
+    }
+
+    {
+        QAtomicInt atomic = value1;
+        result = atomic.fetchAndAddOrdered(value2);
+        QCOMPARE(result, value1);
+        QCOMPARE(atomic.loadRelaxed(), value1 + value2);
+    }
+}
+
+void tst_QAtomicInt::operators()
+{
+    {
+        // Test that QBasicAtomicInt also has operator= and cast operators
+        // We've been using them for QAtomicInt elsewhere
+        QBasicAtomicInt atomic = Q_BASIC_ATOMIC_INITIALIZER(0);
+        atomic = 1;
+        QCOMPARE(int(atomic), 1);
+    }
+
+    QAtomicInt atomic = 0;
+    int x = ++atomic;
+    QCOMPARE(int(atomic), x);
+    QCOMPARE(int(atomic), 1);
+
+    x = atomic++;
+    QCOMPARE(int(atomic), x + 1);
+    QCOMPARE(int(atomic), 2);
+
+    x = atomic--;
+    QCOMPARE(int(atomic), x - 1);
+    QCOMPARE(int(atomic), 1);
+
+    x = --atomic;
+    QCOMPARE(int(atomic), x);
+    QCOMPARE(int(atomic), 0);
+
+    x = (atomic += 1);
+    QCOMPARE(int(atomic), x);
+    QCOMPARE(int(atomic), 1);
+
+    x = (atomic -= 1);
+    QCOMPARE(int(atomic), x);
+    QCOMPARE(int(atomic), 0);
+
+    x = (atomic |= 0xf);
+    QCOMPARE(int(atomic), x);
+    QCOMPARE(int(atomic), 0xf);
+
+    x = (atomic &= 0x17);
+    QCOMPARE(int(atomic), x);
+    QCOMPARE(int(atomic), 7);
+
+    x = (atomic ^= 0x14);
+    QCOMPARE(int(atomic), x);
+    QCOMPARE(int(atomic), 0x13);
+
+QT_WARNING_PUSH
+QT_WARNING_DISABLE_CLANG("-Wself-assign-overloaded")
+    x = (atomic ^= atomic);
+    QCOMPARE(int(atomic), x);
+    QCOMPARE(int(atomic), 0);
+QT_WARNING_POP
+}
+
+void tst_QAtomicInt::testAndSet_loop()
+{
+    QElapsedTimer stopWatch;
+    stopWatch.start();
+
+    int iterations = 10000000;
+
+    QAtomicInt val=0;
+    for (int i = 0; i < iterations; ++i) {
+        int v = val.loadRelaxed();
+        QVERIFY(val.testAndSetRelaxed(v, v+1));
+        if ((i % 1000) == 999) {
+            if (stopWatch.elapsed() > 60 * 1000) {
+                // This test shouldn't run for more than two minutes.
+                qDebug("Interrupted test after %d iterations (%.2f iterations/sec)",
+                       i, (i * 1000.0) / double(stopWatch.elapsed()));
+                break;
+            }
+        }
+    }
+}
+
+void tst_QAtomicInt::fetchAndAdd_loop()
+{
+    int iterations = 10000000;
+#if defined (Q_OS_HPUX)
+    iterations = 1000000;
+#endif
+
+    QAtomicInt val=0;
+    for (int i = 0; i < iterations; ++i) {
+        const int prev = val.fetchAndAddRelaxed(1);
+        QCOMPARE(prev, val.loadRelaxed() -1);
+    }
+}
+
+class FetchAndAddThread : public QThread
+{
+public:
+    void run() override
+    {
+
+        for (int i = 0; i < iterations; ++i)
+            val->fetchAndAddAcquire(1);
+
+        for (int i = 0; i < iterations; ++i)
+            val->fetchAndAddAcquire(-1);
+
+    }
+QAtomicInt *val;
+int iterations;
+};
+
+
+void tst_QAtomicInt::fetchAndAdd_threadedLoop()
+{
+    QAtomicInt val;
+    FetchAndAddThread t1;
+    t1.val = &val;
+    t1.iterations = 1000000;
+
+    FetchAndAddThread t2;
+    t2.val = &val;
+    t2.iterations = 2000000;
+
+    t1.start();
+    t2.start();
+    t1.wait();
+    t2.wait();
+
+    QCOMPARE(val.loadRelaxed(), 0);
+}
+
+QTEST_MAIN(tst_QAtomicInt)
+#include "tst_qatomicint.moc"