cd46a2daf5
Update files using old header.LGPL3 to header.LGPL Update files using old FDL template to use new one Update files using old BSD template to use new one Change-Id: I36a78272516f9953d02956522f285b40adfc8915 Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
275 lines
7.8 KiB
C++
275 lines
7.8 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2016 The Qt Company Ltd.
|
|
** Contact: https://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the test suite of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and The Qt Company. For licensing terms
|
|
** and conditions see https://www.qt.io/terms-conditions. For further
|
|
** information use the contact form at https://www.qt.io/contact-us.
|
|
**
|
|
** BSD License Usage
|
|
** Alternatively, you may use this file under the terms of the BSD license
|
|
** as follows:
|
|
**
|
|
** "Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions are
|
|
** met:
|
|
** * Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** * Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in
|
|
** the documentation and/or other materials provided with the
|
|
** distribution.
|
|
** * Neither the name of The Qt Company Ltd nor the names of its
|
|
** contributors may be used to endorse or promote products derived
|
|
** from this software without specific prior written permission.
|
|
**
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
// This file contains benchmarks for comparing QVector against std::vector
|
|
|
|
#include <QtCore>
|
|
#include <QVector>
|
|
#include <vector>
|
|
|
|
#include <qtest.h>
|
|
|
|
template <typename T> // T is the item type
|
|
class UseCases {
|
|
public:
|
|
virtual ~UseCases() {}
|
|
|
|
// Use case: Insert \a size items into the vector.
|
|
virtual void insert(int size) = 0;
|
|
|
|
// Use case: Lookup \a size items from the vector.
|
|
virtual void lookup(int size) = 0;
|
|
};
|
|
|
|
template <typename T>
|
|
T * f(T *ts) // dummy function to prevent code from being optimized away by the compiler
|
|
{
|
|
return ts;
|
|
}
|
|
|
|
// This subclass implements the use cases using QVector as efficiently as possible.
|
|
template <typename T>
|
|
class UseCases_QVector : public UseCases<T>
|
|
{
|
|
void insert(int size)
|
|
{
|
|
QVector<T> v;
|
|
T t;
|
|
QBENCHMARK {
|
|
for (int i = 0; i < size; ++i)
|
|
v.append(t);
|
|
}
|
|
}
|
|
|
|
void lookup(int size)
|
|
{
|
|
QVector<T> v;
|
|
|
|
T t;
|
|
for (int i = 0; i < size; ++i)
|
|
v.append(t);
|
|
|
|
T *ts = new T[size];
|
|
QBENCHMARK {
|
|
for (int i = 0; i < size; ++i)
|
|
ts[i] = v.value(i);
|
|
}
|
|
f<T>(ts);
|
|
delete[] ts;
|
|
}
|
|
};
|
|
|
|
// This subclass implements the use cases using std::vector as efficiently as possible.
|
|
template <typename T>
|
|
class UseCases_stdvector : public UseCases<T>
|
|
{
|
|
void insert(int size)
|
|
{
|
|
std::vector<T> v;
|
|
T t;
|
|
QBENCHMARK {
|
|
for (int i = 0; i < size; ++i)
|
|
v.push_back(t);
|
|
}
|
|
}
|
|
|
|
void lookup(int size)
|
|
{
|
|
std::vector<T> v;
|
|
|
|
T t;
|
|
for (int i = 0; i < size; ++i)
|
|
v.push_back(t);
|
|
|
|
T *ts = new T[size];
|
|
QBENCHMARK {
|
|
for (int i = 0; i < size; ++i)
|
|
ts[i] = v[i];
|
|
}
|
|
f<T>(ts);
|
|
delete[] ts;
|
|
}
|
|
};
|
|
|
|
struct Large { // A "large" item type
|
|
int x[1000];
|
|
};
|
|
|
|
// Symbian devices typically have limited memory
|
|
# define LARGE_MAX_SIZE 20000
|
|
|
|
class tst_vector_vs_std : public QObject
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
tst_vector_vs_std()
|
|
{
|
|
useCases_QVector_int = new UseCases_QVector<int>;
|
|
useCases_stdvector_int = new UseCases_stdvector<int>;
|
|
|
|
useCases_QVector_Large = new UseCases_QVector<Large>;
|
|
useCases_stdvector_Large = new UseCases_stdvector<Large>;
|
|
}
|
|
|
|
private:
|
|
UseCases<int> *useCases_QVector_int;
|
|
UseCases<int> *useCases_stdvector_int;
|
|
UseCases<Large> *useCases_QVector_Large;
|
|
UseCases<Large> *useCases_stdvector_Large;
|
|
|
|
private slots:
|
|
void insert_int_data();
|
|
void insert_int();
|
|
void insert_Large_data();
|
|
void insert_Large();
|
|
void lookup_int_data();
|
|
void lookup_int();
|
|
void lookup_Large_data();
|
|
void lookup_Large();
|
|
};
|
|
|
|
void tst_vector_vs_std::insert_int_data()
|
|
{
|
|
QTest::addColumn<bool>("useStd");
|
|
QTest::addColumn<int>("size");
|
|
|
|
for (int size = 10; size < 20000; size += 100) {
|
|
const QByteArray sizeString = QByteArray::number(size);
|
|
QTest::newRow(("std::vector-int--" + sizeString).constData()) << true << size;
|
|
QTest::newRow(("QVector-int--" + sizeString).constData()) << false << size;
|
|
}
|
|
}
|
|
|
|
void tst_vector_vs_std::insert_int()
|
|
{
|
|
QFETCH(bool, useStd);
|
|
QFETCH(int, size);
|
|
|
|
if (useStd)
|
|
useCases_stdvector_int->insert(size);
|
|
else
|
|
useCases_QVector_int->insert(size);
|
|
}
|
|
|
|
void tst_vector_vs_std::insert_Large_data()
|
|
{
|
|
QTest::addColumn<bool>("useStd");
|
|
QTest::addColumn<int>("size");
|
|
|
|
for (int size = 10; size < LARGE_MAX_SIZE; size += 100) {
|
|
const QByteArray sizeString = QByteArray::number(size);
|
|
QTest::newRow(("std::vector-Large--" + sizeString).constData()) << true << size;
|
|
QTest::newRow(("QVector-Large--" + sizeString).constData()) << false << size;
|
|
}
|
|
}
|
|
|
|
void tst_vector_vs_std::insert_Large()
|
|
{
|
|
QFETCH(bool, useStd);
|
|
QFETCH(int, size);
|
|
|
|
if (useStd)
|
|
useCases_stdvector_Large->insert(size);
|
|
else
|
|
useCases_QVector_Large->insert(size);
|
|
}
|
|
|
|
//! [1]
|
|
void tst_vector_vs_std::lookup_int_data()
|
|
{
|
|
QTest::addColumn<bool>("useStd");
|
|
QTest::addColumn<int>("size");
|
|
|
|
for (int size = 10; size < 20000; size += 100) {
|
|
const QByteArray sizeString = QByteArray::number(size);
|
|
QTest::newRow(("std::vector-int--" + sizeString).constData()) << true << size;
|
|
QTest::newRow(("QVector-int--" + sizeString).constData()) << false << size;
|
|
}
|
|
}
|
|
//! [1]
|
|
|
|
//! [2]
|
|
void tst_vector_vs_std::lookup_int()
|
|
{
|
|
QFETCH(bool, useStd);
|
|
QFETCH(int, size);
|
|
|
|
if (useStd)
|
|
useCases_stdvector_int->lookup(size); // Create a std::vector and run the benchmark.
|
|
else
|
|
useCases_QVector_int->lookup(size); // Create a QVector and run the benchmark.
|
|
}
|
|
//! [2]
|
|
|
|
void tst_vector_vs_std::lookup_Large_data()
|
|
{
|
|
QTest::addColumn<bool>("useStd");
|
|
QTest::addColumn<int>("size");
|
|
|
|
for (int size = 10; size < LARGE_MAX_SIZE; size += 100) {
|
|
const QByteArray sizeString = QByteArray::number(size);
|
|
QTest::newRow(("std::vector-Large--" + sizeString).constData()) << true << size;
|
|
QTest::newRow(("QVector-Large--" + sizeString).constData()) << false << size;
|
|
}
|
|
}
|
|
|
|
void tst_vector_vs_std::lookup_Large()
|
|
{
|
|
QFETCH(bool, useStd);
|
|
QFETCH(int, size);
|
|
|
|
if (useStd)
|
|
useCases_stdvector_Large->lookup(size);
|
|
else
|
|
useCases_QVector_Large->lookup(size);
|
|
}
|
|
|
|
QTEST_MAIN(tst_vector_vs_std)
|
|
#include "main.moc"
|