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
|
/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Virtual Keyboard module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "memorymonitor.h"
#include <QtCharts/QAbstractAxis>
#include <QtCharts/QSplineSeries>
#include <QtCharts/QValueAxis>
#include <QtCore/QRandomGenerator>
#include <QLoggingCategory>
#include <QMainWindow>
#include <QWindow>
#include <QScreen>
#include <QDir>
#include <QTime>
extern "C" {
#include <unistd.h>
#include <sys/resource.h>
}
#include <cstdio>
namespace {
const QString KChartFileName = "MemoryUsageChart";
const quint8 KYPosition = 15;
const quint8 KReadingMargin = 80;
const quint16 KToKilo = 1024;
}
Q_LOGGING_CATEGORY(lcMemoryMonitor, "qt.virtualkeyboard.tests.manual.x11vkbtest.memorymonitor")
MemoryMonitor::MemoryMonitor(QMainWindow &window, QGraphicsItem *parent, Qt::WindowFlags wFlags) :
QChart(QChart::ChartTypeCartesian, parent, wFlags),
m_series(nullptr),
m_axisX(new QValueAxis()),
m_axisY(new QValueAxis()),
m_x(0),
m_y(0),
m_peakMemory(0),
m_minMemory(0),
m_procID(0),
m_MainWindow(window),
m_screen(nullptr),
m_drawInterval(new QTimer()),
m_elapsedTime(0),
m_minMemReading(nullptr),
m_curMemReading(nullptr),
m_peakMemReading(nullptr),
m_elapsedTimeReading(nullptr)
{
m_series = new QSplineSeries(this);
QPen red(Qt::red);
red.setWidth(3);
m_series->setPen(red);
this->addSeries(m_series);
this->addAxis(m_axisX,Qt::AlignBottom);
m_axisX->setTitleText("Time");
this->addAxis(m_axisY,Qt::AlignLeft);
m_axisY->setTitleText("Memory KB");
m_series->attachAxis(m_axisX);
m_series->attachAxis(m_axisY);
m_axisX->setTickCount(15);
m_axisX->setLabelFormat("%.1u");
m_axisY->setTickCount(15);
m_axisY->setLabelFormat("%.1u");
m_axisX->setRange(0, 500);
m_axisY->setRange(0, 100 * KToKilo);
}
void MemoryMonitor::init()
{
QWindow *win = m_MainWindow.windowHandle();
m_screen = win->screen();
m_minMemReading = new QGraphicsSimpleTextItem(this);
m_minMemReading->setPen(QPen(QBrush("black"), 1));
m_minMemReading->setText("Min mem ----- KB");
m_minMemReading->setPos(KReadingMargin, KYPosition);
m_curMemReading = new QGraphicsSimpleTextItem(this);
m_curMemReading->setPen(QPen(QBrush("black"), 1));
m_curMemReading->setText("Current mem ----- KB");
m_curMemReading->setPos((this->size().width() / 2) - KReadingMargin, KYPosition);
m_peakMemReading = new QGraphicsSimpleTextItem(this);
m_peakMemReading->setPen(QPen(QBrush("black"), 1));
m_peakMemReading->setText("Peak mem ----- KB");
m_peakMemReading->setPos(this->size().width() - (KReadingMargin * 2), KYPosition);
m_elapsedTimeReading = new QGraphicsSimpleTextItem(this);
m_elapsedTimeReading->setPen(QPen(QBrush("black"), 1));
m_elapsedTimeReading->setText("-- s");
m_elapsedTimeReading->setPos((this->size().width() / 2) + KReadingMargin, this->size().height() - KYPosition * 3);
QObject::connect(this, &QChart::geometryChanged, [this]() {
m_minMemReading->setPos(KReadingMargin, KYPosition);
m_curMemReading->setPos((this->size().width() / 2) - KReadingMargin, KYPosition);
m_peakMemReading->setPos(this->size().width() - (KReadingMargin * 2), KYPosition);
m_elapsedTimeReading->setPos((this->size().width() / 2) + KReadingMargin, this->size().height() - KYPosition * 3);
});
}
void MemoryMonitor::setProcID(const qint64 procID)
{
m_procID = procID;
}
void MemoryMonitor::start()
{
QObject::connect(m_drawInterval, &QTimer::timeout, [&]() {
ulong memUsed = currentMemUsage();
this->drawMemUsage(memUsed);
this->storeMemValues(memUsed);
});
m_drawInterval->setInterval(1000);
m_drawInterval->start();
}
/**
* @brief currentMemUsage
* @param procID
* @return current memory by procID in kB
* Getting memory usage of a given process using
* Linux proc filesystem.
*/
ulong MemoryMonitor::currentMemUsage()
{
ulong memSize = 0UL;
QString str = QString("/proc/" + QString::number(m_procID) + "/statm");
QFile procFile(str);
if (procFile.open(QIODevice::ReadOnly)) {
QTextStream procStream(&procFile);
ulong mem = procStream.readLine().split(" ").at(1).toULong();
memSize = mem * static_cast<ulong>(sysconf(_SC_PAGESIZE));
procFile.close();
}
auto result = memSize / KToKilo;
qCDebug(lcMemoryMonitor).noquote() << QTime::currentTime().toString() << "memory usage:" << result;
emit memUsage(m_elapsedTime, result);
return result;
}
MemoryMonitor::~MemoryMonitor()
{
qCDebug(lcMemoryMonitor) << "Destroying MemoryChart";
}
void MemoryMonitor::saveChart()
{
QPixmap pix = m_screen->grabWindow(m_MainWindow.winId());
const QString format = "png";
QString path = QDir::currentPath();
path += "/" + KChartFileName + "." + format;
pix.save(path);
}
void MemoryMonitor::stopChart()
{
this->saveChart();
m_drawInterval->stop();
emit minAndPeakReport(QString("Min process memory: %1 KB\nPeak process memory: %2 KB")
.arg(QString::number(m_minMemory))
.arg(QString::number(m_peakMemory)));
}
void MemoryMonitor::storeMemValues(const ulong memValue)
{
if ((m_minMemory == 0 || m_minMemory > memValue)) {
m_minMemory = memValue;
}
if (m_peakMemory < memValue) {
m_peakMemory = memValue;
}
m_minMemReading->setText(QString("Min mem %1 KB").arg(QString::number(m_minMemory)));
m_curMemReading->setText(QString("Current mem %1 KB").arg(QString::number(memValue)));
m_peakMemReading->setText(QString("Peak mem %1 KB").arg(QString::number(m_peakMemory)));
m_elapsedTimeReading->setText(QString("%1 s").arg(m_elapsedTime += 1));
}
void MemoryMonitor::drawMemUsage(const ulong memUsed)
{
m_x += 1;
m_y = memUsed;
if (m_y >= m_axisY->max()) {
m_axisY->setRange(0, (m_axisY->max() * 2));
}
if (m_x >= m_axisX->max()) {
m_axisX->setRange(0, (m_axisX->max() * 2));
}
m_series->append(m_x, m_y);
}
|
