1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 Intel Corporation. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtCore module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://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 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QBENCHMARKPERFEVENTS_P_H 41 #define QBENCHMARKPERFEVENTS_P_H 42 43 // 44 // W A R N I N G 45 // ------------- 46 // 47 // This file is not part of the Qt API. It exists purely as an 48 // implementation detail. This header file may change from version to 49 // version without notice, or even be removed. 50 // 51 // We mean it. 52 // 53 54 #include <QtTest/private/qbenchmarkmeasurement_p.h> 55 56 QT_BEGIN_NAMESPACE 57 58 class QBenchmarkPerfEventsMeasurer : public QBenchmarkMeasurerBase 59 { 60 public: 61 QBenchmarkPerfEventsMeasurer(); 62 ~QBenchmarkPerfEventsMeasurer(); 63 void init() override; 64 void start() override; 65 qint64 checkpoint() override; 66 qint64 stop() override; 67 bool isMeasurementAccepted(qint64 measurement) override; 68 int adjustIterationCount(int suggestion) override; 69 int adjustMedianCount(int suggestion) override; repeatCount()70 bool repeatCount() override { return true; } needsWarmupIteration()71 bool needsWarmupIteration() override { return true; } 72 QTest::QBenchmarkMetric metricType() override; 73 74 static bool isAvailable(); 75 static QTest::QBenchmarkMetric metricForEvent(quint32 type, quint64 event_id); 76 static void setCounter(const char *name); 77 static void listCounters(); 78 private: 79 int fd = -1; 80 81 qint64 readValue(); 82 }; 83 84 QT_END_NAMESPACE 85 86 #endif // QBENCHMARKPERFEVENTS_P_H 87