125 lines
3.2 KiB
C++
125 lines
3.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the test suite of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL-EXCEPT$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 as published by the Free Software
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** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QDebug>
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#include <QIODevice>
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#include <QFile>
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#include <QString>
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#include <qtest.h>
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class tst_qiodevice : public QObject
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{
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Q_OBJECT
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private slots:
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void read_old();
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void read_old_data() { read_data(); }
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void peekAndRead();
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void peekAndRead_data() { read_data(); }
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//void read_new();
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//void read_new_data() { read_data(); }
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private:
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void read_data();
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};
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void tst_qiodevice::read_data()
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{
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QTest::addColumn<qint64>("size");
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QTest::newRow("10k") << qint64(10 * 1024);
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QTest::newRow("100k") << qint64(100 * 1024);
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QTest::newRow("1000k") << qint64(1000 * 1024);
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QTest::newRow("10000k") << qint64(10000 * 1024);
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QTest::newRow("100000k") << qint64(100000 * 1024);
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QTest::newRow("1000000k") << qint64(1000000 * 1024);
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}
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void tst_qiodevice::read_old()
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{
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QFETCH(qint64, size);
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QString name = "tmp" + QString::number(size);
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{
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QFile file(name);
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file.open(QIODevice::WriteOnly);
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file.seek(size);
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file.write("x", 1);
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file.close();
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}
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QBENCHMARK {
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QFile file(name);
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file.open(QIODevice::ReadOnly);
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QByteArray ba;
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qint64 s = size - 1024;
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file.seek(512);
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ba = file.read(s); // crash happens during this read / assignment operation
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}
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{
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QFile file(name);
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file.remove();
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}
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}
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void tst_qiodevice::peekAndRead()
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{
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QFETCH(qint64, size);
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QString name = "tmp" + QString::number(size);
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{
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QFile file(name);
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file.open(QIODevice::WriteOnly);
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file.seek(size);
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file.write("x", 1);
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file.close();
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}
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QBENCHMARK {
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QFile file(name);
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file.open(QIODevice::ReadOnly);
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QByteArray ba(size / 1024, Qt::Uninitialized);
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while (!file.atEnd()) {
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file.peek(ba.data(), ba.size());
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file.read(ba.data(), ba.size());
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}
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}
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{
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QFile file(name);
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file.remove();
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}
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}
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QTEST_MAIN(tst_qiodevice)
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#include "main.moc"
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