Long live Qt!

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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QBENCHMARK_P_H
+#define QBENCHMARK_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtCore/qglobal.h>
+
+#if defined(Q_OS_LINUX) && !defined(QT_NO_PROCESS)
+#define QTESTLIB_USE_VALGRIND 
+#else
+#undef QTESTLIB_USE_VALGRIND
+#endif
+
+#include "QtTest/private/qbenchmarkmeasurement_p.h"
+#include <QtCore/QMap>
+#include <QtTest/qtest_global.h>
+#ifdef QTESTLIB_USE_VALGRIND
+#include "QtTest/private/qbenchmarkvalgrind_p.h"
+#endif
+#include "QtTest/private/qbenchmarkevent_p.h"
+
+QT_BEGIN_NAMESPACE
+
+struct QBenchmarkContext
+{
+    // None of the strings below are assumed to contain commas (see toString() below)
+    QString slotName;
+    QString tag; // from _data() function
+
+    int checkpointIndex;
+
+    QString toString() const
+    {
+        QString s = QString(QLatin1String("%1,%2,%3")).arg(slotName).arg(tag).arg(checkpointIndex);
+        return s;
+    }
+
+    QBenchmarkContext() : checkpointIndex(-1) {}
+};
+
+class QBenchmarkResult
+{
+public:
+    QBenchmarkContext context;
+    qint64 value;
+    int iterations;
+    bool valid;
+
+    QBenchmarkResult()
+    : value(-1)
+    , iterations(-1)
+    , valid(false)
+    {  }
+
+    QBenchmarkResult(const QBenchmarkContext &context, const qint64 value, const int iterations)
+        : context(context)
+        , value(value)
+        , iterations(iterations)
+        , valid(true)
+    {
+    }
+
+    bool operator<(const QBenchmarkResult &other) const 
+    {
+        return (value / iterations) < (other.value / other.iterations);
+    }
+};
+
+/*
+    The QBenchmarkGlobalData class stores global benchmark-related data.
+    QBenchmarkGlobalData:current is created at the beginning of qExec()
+    and cleared at the end.
+*/
+class QBenchmarkGlobalData
+{
+public:
+    static QBenchmarkGlobalData *current;
+
+    QBenchmarkGlobalData();
+    ~QBenchmarkGlobalData();
+    enum Mode { WallTime, CallgrindParentProcess, CallgrindChildProcess, TickCounter, EventCounter };
+    void setMode(Mode mode);
+    Mode mode() const { return mode_; }
+    QBenchmarkMeasurerBase *createMeasurer();
+    int adjustMedianIterationCount();
+
+    QBenchmarkMeasurerBase *measurer;
+    QBenchmarkContext context;
+    int walltimeMinimum;
+    int iterationCount;
+    int medianIterationCount;
+    bool createChart;
+    bool verboseOutput;
+    QString callgrindOutFileBase;
+private:
+    Mode mode_;
+};
+
+/*
+    The QBenchmarkTestMethodData class stores all benchmark-related data
+    for the current test case. QBenchmarkTestMethodData:current is
+    created at the beginning of qInvokeTestMethod() and cleared at
+    the end.
+*/
+class QBenchmarkTestMethodData
+{
+public:
+    static QBenchmarkTestMethodData *current;
+    QBenchmarkTestMethodData();
+    ~QBenchmarkTestMethodData();
+
+    // Called once for each data row created by the _data function,
+    // before and after calling the test function itself.
+    void beginDataRun();
+    void endDataRun();
+
+    bool isBenchmark() const { return result.valid; }
+    bool resultsAccepted() const { return resultAccepted; }
+    int adjustIterationCount(int suggestion);
+    void setResult(qint64 value);
+
+    QBenchmarkResult result;
+    bool resultAccepted;
+    int iterationCount;
+};
+
+// low-level API:
+namespace QTest
+{
+    int iterationCount();
+    void setIterationCountHint(int count);
+    void setIterationCount(int count);
+
+    Q_TESTLIB_EXPORT void beginBenchmarkMeasurement();
+    Q_TESTLIB_EXPORT qint64 endBenchmarkMeasurement();
+
+    void setResult(qint64 result);
+    void setResult(const QString &tag, qint64 result);
+}
+
+QT_END_NAMESPACE
+
+#endif // QBENCHMARK_H