qbenchmarkvalgrind.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2015 The Qt Company Ltd.-
4** Contact: http://www.qt.io/licensing/-
5**-
6** This file is part of the QtTest module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL21$-
9** Commercial License Usage-
10** Licensees holding valid commercial Qt licenses may use this file in-
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13** a written agreement between you and The Qt Company. For licensing terms-
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15** information use the contact form at http://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 2.1 or version 3 as published by the Free-
20** Software Foundation and appearing in the file LICENSE.LGPLv21 and-
21** LICENSE.LGPLv3 included in the packaging of this file. Please review the-
22** following information to ensure the GNU Lesser General Public License-
23** requirements will be met: https://www.gnu.org/licenses/lgpl.html and-
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26** As a special exception, The Qt Company gives you certain additional-
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28** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.-
29**-
30** $QT_END_LICENSE$-
31**-
32****************************************************************************/-
33-
34#include <QtTest/private/qbenchmark_p.h>-
35-
36#ifdef QTESTLIB_USE_VALGRIND-
37-
38#include <QtTest/private/qbenchmarkvalgrind_p.h>-
39#include <QtCore/qstringlist.h>-
40#include <QtCore/qcoreapplication.h>-
41#include <QtCore/qprocess.h>-
42#include <QtCore/qdir.h>-
43#include <QtCore/qset.h>-
44#include <QtTest/private/callgrind_p.h>-
45-
46QT_BEGIN_NAMESPACE-
47-
48// Returns \c true if valgrind is available.-
49bool QBenchmarkValgrindUtils::haveValgrind()-
50{-
51#ifdef NVALGRIND-
52 return false;-
53#else-
54 QProcess process;-
55 process.start(QLatin1String("valgrind"), QStringList(QLatin1String("--version")));-
56 return process.waitForStarted() && process.waitForFinished(-1);
never executed: return process.waitForStarted() && process.waitForFinished(-1);
process.waitForStarted()Description
TRUEnever evaluated
FALSEnever evaluated
process.waitForFinished(-1)Description
TRUEnever evaluated
FALSEnever evaluated
0
57#endif-
58}-
59-
60// Reruns this program through callgrind.-
61// Returns \c true upon success, otherwise false.-
62bool QBenchmarkValgrindUtils::rerunThroughCallgrind(const QStringList &origAppArgs, int &exitCode)-
63{-
64 if (!QBenchmarkValgrindUtils::runCallgrindSubProcess(origAppArgs, exitCode)) {
!QBenchmarkVal...rgs, exitCode)Description
TRUEnever evaluated
FALSEnever evaluated
0
65 qWarning("failed to run callgrind subprocess");-
66 return false;
never executed: return false;
0
67 }-
68 return true;
never executed: return true;
0
69}-
70-
71static void dumpOutput(const QByteArray &data, FILE *fh)-
72{-
73 QFile file;-
74 file.open(fh, QIODevice::WriteOnly);-
75 file.write(data);-
76}
never executed: end of block
0
77-
78qint64 QBenchmarkValgrindUtils::extractResult(const QString &fileName)-
79{-
80 QFile file(fileName);-
81 const bool openOk = file.open(QIODevice::ReadOnly | QIODevice::Text);-
82 Q_ASSERT(openOk);-
83 Q_UNUSED(openOk);-
84-
85 qint64 val = -1;-
86 bool valSeen = false;-
87 QRegExp rxValue(QLatin1String("^summary: (\\d+)"));-
88 while (!file.atEnd()) {
!file.atEnd()Description
TRUEnever evaluated
FALSEnever evaluated
0
89 const QString line(QLatin1String(file.readLine()));-
90 if (rxValue.indexIn(line) != -1) {
rxValue.indexIn(line) != -1Description
TRUEnever evaluated
FALSEnever evaluated
0
91 Q_ASSERT(rxValue.captureCount() == 1);-
92 bool ok;-
93 val = rxValue.cap(1).toLongLong(&ok);-
94 Q_ASSERT(ok);-
95 valSeen = true;-
96 break;
never executed: break;
0
97 }-
98 }
never executed: end of block
0
99 if (!valSeen)
!valSeenDescription
TRUEnever evaluated
FALSEnever evaluated
0
100 qFatal("Failed to extract result");
never executed: QMessageLogger(__FILE__, 100, __PRETTY_FUNCTION__).fatal("Failed to extract result");
0
101 return val;
never executed: return val;
0
102}-
103-
104// Gets the newest file name (i.e. the one with the highest integer suffix).-
105QString QBenchmarkValgrindUtils::getNewestFileName()-
106{-
107 QStringList nameFilters;-
108 QString base = QBenchmarkGlobalData::current->callgrindOutFileBase;-
109 Q_ASSERT(!base.isEmpty());-
110-
111 nameFilters << QString::fromLatin1("%1.*").arg(base);-
112 QFileInfoList fiList = QDir().entryInfoList(nameFilters, QDir::Files | QDir::Readable);-
113 Q_ASSERT(!fiList.empty());-
114 int hiSuffix = -1;-
115 QFileInfo lastFileInfo;-
116 const QString pattern = QString::fromLatin1("%1.(\\d+)").arg(base);-
117 QRegExp rx(pattern);-
118 foreach (const QFileInfo &fileInfo, fiList) {-
119 const int index = rx.indexIn(fileInfo.fileName());-
120 Q_ASSERT(index == 0);-
121 Q_UNUSED(index);-
122 bool ok;-
123 const int suffix = rx.cap(1).toInt(&ok);-
124 Q_ASSERT(ok);-
125 Q_ASSERT(suffix >= 0);-
126 if (suffix > hiSuffix) {
suffix > hiSuffixDescription
TRUEnever evaluated
FALSEnever evaluated
0
127 lastFileInfo = fileInfo;-
128 hiSuffix = suffix;-
129 }
never executed: end of block
0
130 }
never executed: end of block
0
131-
132 return lastFileInfo.fileName();
never executed: return lastFileInfo.fileName();
0
133}-
134-
135qint64 QBenchmarkValgrindUtils::extractLastResult()-
136{-
137 return extractResult(getNewestFileName());
never executed: return extractResult(getNewestFileName());
0
138}-
139-
140void QBenchmarkValgrindUtils::cleanup()-
141{-
142 QStringList nameFilters;-
143 QString base = QBenchmarkGlobalData::current->callgrindOutFileBase;-
144 Q_ASSERT(!base.isEmpty());-
145 nameFilters-
146 << base // overall summary-
147 << QString::fromLatin1("%1.*").arg(base); // individual dumps-
148 QFileInfoList fiList = QDir().entryInfoList(nameFilters, QDir::Files | QDir::Readable);-
149 foreach (const QFileInfo &fileInfo, fiList) {-
150 const bool removeOk = QFile::remove(fileInfo.fileName());-
151 Q_ASSERT(removeOk);-
152 Q_UNUSED(removeOk);-
153 }
never executed: end of block
0
154}
never executed: end of block
0
155-
156QString QBenchmarkValgrindUtils::outFileBase(qint64 pid)-
157{-
158 return QString::fromLatin1("callgrind.out.%1").arg(
never executed: return QString::fromLatin1("callgrind.out.%1").arg( pid != -1 ? pid : QCoreApplication::applicationPid());
0
159 pid != -1 ? pid : QCoreApplication::applicationPid());
never executed: return QString::fromLatin1("callgrind.out.%1").arg( pid != -1 ? pid : QCoreApplication::applicationPid());
0
160}-
161-
162// Reruns this program through callgrind, storing callgrind result files in the-
163// current directory.-
164// Returns \c true upon success, otherwise false.-
165bool QBenchmarkValgrindUtils::runCallgrindSubProcess(const QStringList &origAppArgs, int &exitCode)-
166{-
167 const QString execFile(origAppArgs.at(0));-
168 QStringList args;-
169 args << QLatin1String("--tool=callgrind") << QLatin1String("--instr-atstart=yes")-
170 << QLatin1String("--quiet")-
171 << execFile << QLatin1String("-callgrindchild");-
172-
173 // pass on original arguments that make sense (e.g. avoid wasting time producing output-
174 // that will be ignored anyway) ...-
175 for (int i = 1; i < origAppArgs.size(); ++i) {
i < origAppArgs.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
176 const QString arg(origAppArgs.at(i));-
177 if (arg == QLatin1String("-callgrind"))
arg == QLatin1...("-callgrind")Description
TRUEnever evaluated
FALSEnever evaluated
0
178 continue;
never executed: continue;
0
179 args << arg; // ok to pass on-
180 }
never executed: end of block
0
181-
182 QProcess process;-
183 process.start(QLatin1String("valgrind"), args);-
184 process.waitForStarted(-1);-
185 QBenchmarkGlobalData::current->callgrindOutFileBase =-
186 QBenchmarkValgrindUtils::outFileBase(process.pid());-
187 const bool finishedOk = process.waitForFinished(-1);-
188 exitCode = process.exitCode();-
189-
190 dumpOutput(process.readAllStandardOutput(), stdout);-
191 dumpOutput(process.readAllStandardError(), stderr);-
192-
193 return finishedOk;
never executed: return finishedOk;
0
194}-
195-
196void QBenchmarkCallgrindMeasurer::start()-
197{-
198 CALLGRIND_ZERO_STATS;-
199}
never executed: end of block
0
200-
201qint64 QBenchmarkCallgrindMeasurer::checkpoint()-
202{-
203 CALLGRIND_DUMP_STATS;-
204 const qint64 result = QBenchmarkValgrindUtils::extractLastResult();-
205 return result;
never executed: return result;
0
206}-
207-
208qint64 QBenchmarkCallgrindMeasurer::stop()-
209{-
210 return checkpoint();
never executed: return checkpoint();
0
211}-
212-
213bool QBenchmarkCallgrindMeasurer::isMeasurementAccepted(qint64 measurement)-
214{-
215 Q_UNUSED(measurement);-
216 return true;
never executed: return true;
0
217}-
218-
219int QBenchmarkCallgrindMeasurer::adjustIterationCount(int)-
220{-
221 return 1;
never executed: return 1;
0
222}-
223-
224int QBenchmarkCallgrindMeasurer::adjustMedianCount(int)-
225{-
226 return 1;
never executed: return 1;
0
227}-
228-
229bool QBenchmarkCallgrindMeasurer::needsWarmupIteration()-
230{-
231 return true;
never executed: return true;
0
232}-
233-
234QTest::QBenchmarkMetric QBenchmarkCallgrindMeasurer::metricType()-
235{-
236 return QTest::InstructionReads;
never executed: return QTest::InstructionReads;
0
237}-
238-
239QT_END_NAMESPACE-
240-
241#endif // QTESTLIB_USE_VALGRIND-
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