--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/testlib/qbenchmarkvalgrind.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,278 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 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/private/qbenchmark_p.h"
+
+#ifdef QTESTLIB_USE_VALGRIND
+
+#include "QtTest/private/qbenchmarkvalgrind_p.h"
+#include <QtCore/qstringlist.h>
+#include <QtCore/qcoreapplication.h>
+#include <QtCore/qprocess.h>
+#include <QtCore/qdir.h>
+#include <QtCore/qset.h>
+#include "3rdparty/callgrind_p.h"
+
+QT_BEGIN_NAMESPACE
+
+// Returns true iff a sufficiently recent valgrind is available.
+bool QBenchmarkValgrindUtils::haveValgrind()
+{
+#ifdef NVALGRIND
+ return false;
+#else
+ QProcess process;
+ QStringList args;
+ args << QLatin1String("--version");
+ process.start(QLatin1String("valgrind"), args);
+ if (!process.waitForFinished(-1))
+ return false;
+ const QByteArray out = process.readAllStandardOutput();
+ const QRegExp rx(QLatin1String("^valgrind-([0-9]).([0-9]).[0-9]"));
+ if (rx.indexIn(QLatin1String(out.data())) == -1)
+ return false;
+ bool ok;
+ const int major = rx.cap(1).toInt(&ok);
+ if (!ok)
+ return false;
+ const int minor = rx.cap(2).toInt(&ok);
+ if (!ok)
+ return false;
+// return (major > 3 || (major == 3 && minor >= 3)); // v >= 3.3 for --callgrind-out-file option
+ Q_UNUSED(major);
+ Q_UNUSED(minor);
+ return true; // skip version restriction for now
+#endif
+}
+
+// Reruns this program through callgrind.
+// Returns true upon success, otherwise false.
+bool QBenchmarkValgrindUtils::rerunThroughCallgrind(const QStringList &origAppArgs, int &exitCode)
+{
+ if (!QBenchmarkValgrindUtils::runCallgrindSubProcess(origAppArgs, exitCode)) {
+ qWarning("failed to run callgrind subprocess");
+ return false;
+ }
+ return true;
+}
+
+static void dumpOutput(const QByteArray &data, FILE *fh)
+{
+ QFile file;
+ file.open(fh, QIODevice::WriteOnly);
+ file.write(data);
+}
+
+qint64 QBenchmarkValgrindUtils::extractResult(const QString &fileName)
+{
+ QFile file(fileName);
+ const bool openOk = file.open(QIODevice::ReadOnly | QIODevice::Text);
+ Q_ASSERT(openOk);
+ Q_UNUSED(openOk);
+
+ qint64 val = -1;
+ bool valSeen = false;
+ const QRegExp rxValue(QLatin1String("^summary: (\\d+)"));
+ while (!file.atEnd()) {
+ const QString line(QLatin1String(file.readLine()));
+ if (rxValue.indexIn(line) != -1) {
+ Q_ASSERT(rxValue.numCaptures() == 1);
+ bool ok;
+ val = rxValue.cap(1).toLongLong(&ok);
+ Q_ASSERT(ok);
+ valSeen = true;
+ break;
+ }
+ }
+ Q_ASSERT(valSeen);
+ return val;
+}
+
+// Gets the newest file name (i.e. the one with the highest integer suffix).
+QString QBenchmarkValgrindUtils::getNewestFileName()
+{
+ QStringList nameFilters;
+ QString base = QBenchmarkGlobalData::current->callgrindOutFileBase;
+ Q_ASSERT(!base.isEmpty());
+
+ nameFilters << QString::fromLatin1("%1.*").arg(base);
+ QFileInfoList fiList = QDir().entryInfoList(nameFilters, QDir::Files | QDir::Readable);
+ Q_ASSERT(!fiList.empty());
+ int hiSuffix = -1;
+ QFileInfo lastFileInfo;
+ const QString pattern = QString::fromLatin1("%1.(\\d+)").arg(base);
+ const QRegExp rx(pattern);
+ foreach (QFileInfo fileInfo, fiList) {
+ const int index = rx.indexIn(fileInfo.fileName());
+ Q_ASSERT(index == 0);
+ Q_UNUSED(index);
+ bool ok;
+ const int suffix = rx.cap(1).toInt(&ok);
+ Q_ASSERT(ok);
+ Q_ASSERT(suffix >= 0);
+ if (suffix > hiSuffix) {
+ lastFileInfo = fileInfo;
+ hiSuffix = suffix;
+ }
+ }
+
+ return lastFileInfo.fileName();
+}
+
+qint64 QBenchmarkValgrindUtils::extractLastResult()
+{
+ return extractResult(getNewestFileName());
+}
+
+void QBenchmarkValgrindUtils::cleanup()
+{
+ QStringList nameFilters;
+ QString base = QBenchmarkGlobalData::current->callgrindOutFileBase;
+ Q_ASSERT(!base.isEmpty());
+ nameFilters
+ << base // overall summary
+ << QString::fromLatin1("%1.*").arg(base); // individual dumps
+ QFileInfoList fiList = QDir().entryInfoList(nameFilters, QDir::Files | QDir::Readable);
+ foreach (QFileInfo fileInfo, fiList) {
+ const bool removeOk = QFile::remove(fileInfo.fileName());
+ Q_ASSERT(removeOk);
+ Q_UNUSED(removeOk);
+ }
+}
+
+QString QBenchmarkValgrindUtils::outFileBase(qint64 pid)
+{
+ return QString::fromLatin1("callgrind.out.%1").arg(
+ pid != -1 ? pid : QCoreApplication::applicationPid());
+}
+
+// Reruns this program through callgrind, storing callgrind result files in the
+// current directory.
+// Returns true upon success, otherwise false.
+bool QBenchmarkValgrindUtils::runCallgrindSubProcess(const QStringList &origAppArgs, int &exitCode)
+{
+ const QString execFile(origAppArgs.at(0));
+ QStringList args;
+ args << QLatin1String("--tool=callgrind") << QLatin1String("--instr-atstart=yes")
+ << QLatin1String("--quiet")
+ << execFile << QLatin1String("-callgrindchild");
+
+#if (defined Q_WS_QWS)
+ // While running the child process, we aren't processing events, and hence aren't
+ // acting as the QWS server. Therefore it's necessary to tell the child to act
+ // as its own server instead of connecting to us.
+ args << QLatin1String("-qws");
+#endif
+
+ // pass on original arguments that make sense (e.g. avoid wasting time producing output
+ // that will be ignored anyway) ...
+ for (int i = 1; i < origAppArgs.size(); ++i) {
+ const QString arg(origAppArgs.at(i));
+ if (arg == QLatin1String("-callgrind"))
+ continue;
+ args << arg; // ok to pass on
+ }
+
+ QProcess process;
+ process.start(QLatin1String("valgrind"), args);
+ process.waitForStarted(-1);
+ QBenchmarkGlobalData::current->callgrindOutFileBase =
+ QBenchmarkValgrindUtils::outFileBase(process.pid());
+ const bool finishedOk = process.waitForFinished(-1);
+ exitCode = process.exitCode();
+
+ dumpOutput(process.readAllStandardOutput(), stdout);
+ dumpOutput(process.readAllStandardError(), stderr);
+
+ return finishedOk;
+}
+
+void QBenchmarkCallgrindMeasurer::start()
+{
+ CALLGRIND_ZERO_STATS;
+}
+
+qint64 QBenchmarkCallgrindMeasurer::checkpoint()
+{
+ CALLGRIND_DUMP_STATS;
+ const qint64 result = QBenchmarkValgrindUtils::extractLastResult();
+ return result;
+}
+
+qint64 QBenchmarkCallgrindMeasurer::stop()
+{
+ return checkpoint();
+}
+
+bool QBenchmarkCallgrindMeasurer::isMeasurementAccepted(qint64 measurement)
+{
+ Q_UNUSED(measurement);
+ return true;
+}
+
+int QBenchmarkCallgrindMeasurer::adjustIterationCount(int)
+{
+ return 1;
+}
+
+int QBenchmarkCallgrindMeasurer::adjustMedianCount(int)
+{
+ return 1;
+}
+
+bool QBenchmarkCallgrindMeasurer::needsWarmupIteration()
+{
+ return true;
+}
+
+QString QBenchmarkCallgrindMeasurer::unitText()
+{
+ return QLatin1String("instr. loads");
+}
+
+QString QBenchmarkCallgrindMeasurer::metricText()
+{
+ return QLatin1String("callgrind");
+}
+
+QT_END_NAMESPACE
+
+#endif // QTESTLIB_USE_VALGRIND