summaryrefslogtreecommitdiffstats
path: root/tests/benchmarks/qiodevice/main.cpp
blob: ba50448bd36bc352d20a98faf3d1a9870832d219 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights.  These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QDebug>
#include <QIODevice>
#include <QFile>
#include <QString>

#include <qtest.h>


class tst_qiodevice : public QObject
{
    Q_OBJECT
private slots:
    void read_old();
    void read_old_data() { read_data(); }
    //void read_new();
    //void read_new_data() { read_data(); }
private:
    void read_data();
};


void tst_qiodevice::read_data()
{
    QTest::addColumn<qint64>("size");
    QTest::newRow("10k")      << qint64(10 * 1024);
    QTest::newRow("100k")     << qint64(100 * 1024);
    QTest::newRow("1000k")    << qint64(1000 * 1024);
    QTest::newRow("10000k")   << qint64(10000 * 1024);
#ifndef Q_OS_SYMBIAN // Symbian devices don't (yet) have enough available RAM to run these
    QTest::newRow("100000k")  << qint64(100000 * 1024);
    QTest::newRow("1000000k") << qint64(1000000 * 1024);
#endif
}

void tst_qiodevice::read_old()
{
    QFETCH(qint64, size);

    QString name = "tmp" + QString::number(size);

    {
        QFile file(name);
        file.open(QIODevice::WriteOnly);
        file.seek(size);
        file.write("x", 1);
        file.close();
    }

    QBENCHMARK {
        QFile file(name);
        file.open(QIODevice::ReadOnly);
        QByteArray ba;
        qint64 s = size - 1024;
        file.seek(512);
        ba = file.read(s);  // crash happens during this read / assignment operation
    }

    {
        QFile file(name);
        file.remove();
    }
}


QTEST_MAIN(tst_qiodevice)

#include "main.moc"