summaryrefslogtreecommitdiffstats
path: root/src/testlib/qbenchmark.cpp
blob: c92a88a97c949ec7f1a0ebd1728df0cf238c406a (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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtTest module 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 "QtTest/qbenchmark.h"
#include "QtTest/private/qbenchmark_p.h"
#include "QtTest/private/qbenchmarkmetric_p.h"

#ifdef QT_GUI_LIB
#include <QtGui/qapplication.h>
#endif

#include <QtCore/qprocess.h>
#include <QtCore/qdir.h>
#include <QtCore/qset.h>
#include <QtCore/qdebug.h>

QT_BEGIN_NAMESPACE

QBenchmarkGlobalData *QBenchmarkGlobalData::current;

QBenchmarkGlobalData::QBenchmarkGlobalData()
    : measurer(0)
    , walltimeMinimum(-1)
    , iterationCount(-1)
    , medianIterationCount(-1)
    , createChart(false)
    , verboseOutput(false)
    , mode_(WallTime)
{
    setMode(mode_);
}

QBenchmarkGlobalData::~QBenchmarkGlobalData()
{
    delete measurer;
    QBenchmarkGlobalData::current = 0;
}

void QBenchmarkGlobalData::setMode(Mode mode)
{
    mode_ = mode;

    if (measurer)
        delete measurer;
    measurer = createMeasurer();
}

QBenchmarkMeasurerBase * QBenchmarkGlobalData::createMeasurer()
{
    QBenchmarkMeasurerBase *measurer = 0;
    if (0) {
#ifdef QTESTLIB_USE_VALGRIND
    } else if (mode_ == CallgrindChildProcess || mode_ == CallgrindParentProcess) {
        measurer = new QBenchmarkCallgrindMeasurer;
#endif
#ifdef HAVE_TICK_COUNTER
    } else if (mode_ == TickCounter) {
        measurer = new QBenchmarkTickMeasurer;
#endif
    } else if (mode_ == EventCounter) {
        measurer = new QBenchmarkEvent;
    } else {
        measurer =  new QBenchmarkTimeMeasurer;
    }
    measurer->init();
    return measurer;
}

int QBenchmarkGlobalData::adjustMedianIterationCount()
{
    if (medianIterationCount != -1) {
        return medianIterationCount;
    } else {
        return measurer->adjustMedianCount(1);
    }
}


QBenchmarkTestMethodData *QBenchmarkTestMethodData::current;

QBenchmarkTestMethodData::QBenchmarkTestMethodData()
:resultAccepted(false), runOnce(false), iterationCount(-1)
{
   
}

QBenchmarkTestMethodData::~QBenchmarkTestMethodData()
{
    QBenchmarkTestMethodData::current = 0;
}

void QBenchmarkTestMethodData::beginDataRun()
{
    iterationCount = adjustIterationCount(1);
}

void QBenchmarkTestMethodData::endDataRun()
{

}

int QBenchmarkTestMethodData::adjustIterationCount(int suggestion)
{
    // Let the -iterations option override the measurer.
    if (QBenchmarkGlobalData::current->iterationCount != -1) {
        iterationCount = QBenchmarkGlobalData::current->iterationCount;
    } else {
        iterationCount = QBenchmarkGlobalData::current->measurer->adjustIterationCount(suggestion);
    }

    return iterationCount;
}

void QBenchmarkTestMethodData::setResult(
    qreal value, QTest::QBenchmarkMetric metric, bool setByMacro)
{
    bool accepted = false;

    // Always accept the result if the iteration count has been
    // specified on the command line with -iterations.
    if (QBenchmarkGlobalData::current->iterationCount != -1)
        accepted = true;

    else if (QBenchmarkTestMethodData::current->runOnce || !setByMacro) {
        iterationCount = 1;
        accepted = true;
    }

    // Test the result directly without calling the measurer if the minimum time 
    // has been specified on the command line with -minimumvalue.
    else if (QBenchmarkGlobalData::current->walltimeMinimum != -1)
        accepted = (value > QBenchmarkGlobalData::current->walltimeMinimum);
    else
        accepted = QBenchmarkGlobalData::current->measurer->isMeasurementAccepted(value);

    // Accept the result or double the number of iterations.
    if (accepted)
        resultAccepted = true;
    else
        iterationCount *= 2;

    this->result = QBenchmarkResult(
        QBenchmarkGlobalData::current->context, value, iterationCount, metric, setByMacro);
}

/*!
    \class QTest::QBenchmarkIterationController
    \internal

    The QBenchmarkIterationController class is used by the QBENCHMARK macro to
    drive the benchmarking loop. It is repsonsible for starting and stopping
    the timing measurements as well as calling the result reporting functions.
*/

/*! \internal
*/
QTest::QBenchmarkIterationController::QBenchmarkIterationController(RunMode runMode)
{
    i = 0;
    if (runMode == RunOnce)
        QBenchmarkTestMethodData::current->runOnce = true;    
    QTest::beginBenchmarkMeasurement();
}

QTest::QBenchmarkIterationController::QBenchmarkIterationController()
{
    i = 0;
    QTest::beginBenchmarkMeasurement();
}

/*! \internal
*/
QTest::QBenchmarkIterationController::~QBenchmarkIterationController()
{
    const qreal result = QTest::endBenchmarkMeasurement();
    QBenchmarkTestMethodData::current->setResult(result, QBenchmarkGlobalData::current->measurer->metricType());
}

/*! \internal
*/
bool QTest::QBenchmarkIterationController::isDone()
{
    if (QBenchmarkTestMethodData::current->runOnce)
        return i > 0;
    return i >= QTest::iterationCount();
}

/*! \internal
*/
void QTest::QBenchmarkIterationController::next()
{
    ++i;
}

/*! \internal
*/
int QTest::iterationCount()
{
    return QBenchmarkTestMethodData::current->iterationCount;
}

/*! \internal
*/
void QTest::setIterationCountHint(int count)
{
    QBenchmarkTestMethodData::current->adjustIterationCount(count);
}

/*! \internal
*/
void QTest::setIterationCount(int count)
{
    QBenchmarkTestMethodData::current->iterationCount = count;
    QBenchmarkTestMethodData::current->resultAccepted = true;
}

/*! \internal
*/
void QTest::beginBenchmarkMeasurement()
{
    QBenchmarkGlobalData::current->measurer->start();
    // the clock is ticking after the line above, don't add code here.
}

/*! \internal
*/
quint64 QTest::endBenchmarkMeasurement()
{
    // the clock is ticking before the line below, don't add code here.
    return QBenchmarkGlobalData::current->measurer->stop();    
}

/*!
    Sets the benchmark result for this test function to \a result.
 
    Use this function if you want to report benchmark results without
    using the QBENCHMARK macro. Use \a metric to specify how QTestLib
    should interpret the results.
 
    The context for the result will be the test function name and any
    data tag from the _data function. This function can only be called
    once in each test function, subsequent calls will replace the
    earlier reported results.

    Note that the -iterations command line argument has no effect
    on test functions without the QBENCHMARK macro.

    \since 4.7
*/
void QTest::setBenchmarkResult(qreal result, QTest::QBenchmarkMetric metric)
{
    QBenchmarkTestMethodData::current->setResult(result, metric, false);
}

template <typename T>
Q_TYPENAME T::value_type qAverage(const T &container)
{
    Q_TYPENAME T::const_iterator it = container.constBegin();
    Q_TYPENAME T::const_iterator end = container.constEnd();
    Q_TYPENAME T::value_type acc = Q_TYPENAME T::value_type();
    int count = 0;
    while (it != end) {
        acc += *it;
        ++it;
        ++count;
    }
    return acc / count;
}

QT_END_NAMESPACE