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QReadWriteLocker: also benchmark recursive mode

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Change-Id: Ic2e357f4702d05220cf6c96717672dcabacd78d6
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
This commit is contained in:
Marc Mutz 2019-09-11 14:49:17 +02:00 committed by Marc Mutz
parent 01927d80fd
commit ee4f69205a
1 changed files with 66 additions and 0 deletions
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66
tests/benchmarks/corelib/thread/qreadwritelock/tst_bench_qreadwritelock.cpp
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@ -44,6 +44,49 @@ struct LockerWrapper : T
}
};
struct QRecursiveReadWriteLock : QReadWriteLock
{
QRecursiveReadWriteLock() : QReadWriteLock(Recursive) {}
};
template <typename T, size_t N>
// requires N = 2^M for some Integral M >= 0
struct Recursive
{
Recursive<T, N/2> r1, r2;
template <typename...Args>
Q_ALWAYS_INLINE
explicit Recursive(Args &&...args)
: r1(args...),
r2(args...)
{}
};
template <typename T>
struct Recursive<T, 1>
{
T t;
template <typename...Args>
Q_ALWAYS_INLINE
explicit Recursive(Args &&...args)
: t(args...) {}
};
template <typename T>
struct Recursive<T, 0>
{
template <typename...Args>
Q_ALWAYS_INLINE
explicit Recursive(Args &&...) {}
};
template <size_t N>
using QRecursiveReadLocker = Recursive<QReadLocker, N>;
template <size_t N>
using QRecursiveWriteLocker = Recursive<QWriteLocker, N>;
int threadCount;
class tst_QReadWriteLock : public QObject
@ -105,6 +148,15 @@ void tst_QReadWriteLock::uncontended_data()
<< FunctionPtrHolder(testUncontended<QReadWriteLock, QReadLocker>);
QTest::newRow("QReadWriteLock, write")
<< FunctionPtrHolder(testUncontended<QReadWriteLock, QWriteLocker>);
#define ROW(n) \
QTest::addRow("QReadWriteLock, %s, recursive: %d", "read", n) \
<< FunctionPtrHolder(testUncontended<QRecursiveReadWriteLock, QRecursiveReadLocker<n>>); \
QTest::addRow("QReadWriteLock, %s, recursive: %d", "write", n) \
<< FunctionPtrHolder(testUncontended<QRecursiveReadWriteLock, QRecursiveWriteLocker<n>>)
ROW(1);
ROW(2);
ROW(32);
#undef ROW
QTest::newRow("std::mutex") << FunctionPtrHolder(
testUncontended<std::mutex, LockerWrapper<std::unique_lock<std::mutex>>>);
#ifdef __cpp_lib_shared_mutex
@ -172,6 +224,13 @@ void tst_QReadWriteLock::readOnly_data()
QTest::newRow("nothing") << FunctionPtrHolder(testReadOnly<int, FakeLock>);
QTest::newRow("QMutex") << FunctionPtrHolder(testReadOnly<QMutex, QMutexLocker<QMutex>>);
QTest::newRow("QReadWriteLock") << FunctionPtrHolder(testReadOnly<QReadWriteLock, QReadLocker>);
#define ROW(n) \
QTest::addRow("QReadWriteLock, recursive: %d", n) \
<< FunctionPtrHolder(testReadOnly<QRecursiveReadWriteLock, QRecursiveReadLocker<n>>)
ROW(1);
ROW(2);
ROW(32);
#undef ROW
QTest::newRow("std::mutex") << FunctionPtrHolder(
testReadOnly<std::mutex, LockerWrapper<std::unique_lock<std::mutex>>>);
#ifdef __cpp_lib_shared_mutex
@ -233,6 +292,13 @@ void tst_QReadWriteLock::writeOnly_data()
// QTest::newRow("nothing") << FunctionPtrHolder(testWriteOnly<int, FakeLock>);
QTest::newRow("QMutex") << FunctionPtrHolder(testWriteOnly<QMutex, QMutexLocker<QMutex>>);
QTest::newRow("QReadWriteLock") << FunctionPtrHolder(testWriteOnly<QReadWriteLock, QWriteLocker>);
#define ROW(n) \
QTest::addRow("QReadWriteLock, recursive: %d", n) \
<< FunctionPtrHolder(testWriteOnly<QRecursiveReadWriteLock, QRecursiveWriteLocker<n>>)
ROW(1);
ROW(2);
ROW(32);
#undef ROW
QTest::newRow("std::mutex") << FunctionPtrHolder(
testWriteOnly<std::mutex, LockerWrapper<std::unique_lock<std::mutex>>>);
#ifdef __cpp_lib_shared_mutex