aboutsummaryrefslogtreecommitdiffstats
path: root/examples/charts/memoryusage.py
diff options
context:
space:
mode:
Diffstat (limited to 'examples/charts/memoryusage.py')
-rw-r--r--examples/charts/memoryusage.py128
1 files changed, 128 insertions, 0 deletions
diff --git a/examples/charts/memoryusage.py b/examples/charts/memoryusage.py
new file mode 100644
index 000000000..c0e0a38dd
--- /dev/null
+++ b/examples/charts/memoryusage.py
@@ -0,0 +1,128 @@
+#!/usr/bin/python
+
+#############################################################################
+##
+## Copyright (C) 2017 The Qt Company Ltd.
+## Contact: http://www.qt.io/licensing/
+##
+## This file is part of the PySide examples of the Qt Toolkit.
+##
+## $QT_BEGIN_LICENSE:BSD$
+## You may use this file under the terms of the BSD license as follows:
+##
+## "Redistribution and use in source and binary forms, with or without
+## modification, are permitted provided that the following conditions are
+## met:
+## * Redistributions of source code must retain the above copyright
+## notice, this list of conditions and the following disclaimer.
+## * Redistributions in binary form must reproduce the above copyright
+## notice, this list of conditions and the following disclaimer in
+## the documentation and/or other materials provided with the
+## distribution.
+## * Neither the name of The Qt Company Ltd nor the names of its
+## contributors may be used to endorse or promote products derived
+## from this software without specific prior written permission.
+##
+##
+## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+##
+## $QT_END_LICENSE$
+##
+#############################################################################
+
+"""PySide2 Charts example: Simple memory usage viewer"""
+
+import os
+import sys
+from PySide2.QtCore import QRect, QSize, QProcess
+from PySide2.QtWidgets import QApplication, QMainWindow
+from PySide2.QtCharts import QtCharts
+
+def runProcess(command, arguments):
+ process = QProcess()
+ process.start(command, arguments)
+ process.waitForFinished()
+ result = []
+ for line in str(process.readAllStandardOutput()).split(os.linesep):
+ result.append(line)
+ return result
+
+def getMemoryUsage():
+ result = []
+ if sys.platform == 'win32':
+ # Windows: Obtain memory usage in KB from 'tasklist'
+ for line in runProcess('tasklist', [])[3:]:
+ if len(line) >= 74:
+ command = line[0:23].strip()
+ if command.endswith('.exe'):
+ command = command[0:len(command) - 4]
+ memoryUsage = float(line[64:74].strip().replace(',', '').replace('.', ''))
+ legend = ''
+ if memoryUsage > 10240:
+ legend = '{} {}M'.format(command, round(memoryUsage / 1024))
+ else:
+ legend = '{} {}K'.format(command, round(memoryUsage))
+ result.append([legend, memoryUsage])
+ else:
+ # Unix: Obtain memory usage percentage from 'ps'
+ psOptions = ['-e', 'v']
+ memoryColumn = 8
+ commandColumn = 9
+ if sys.platform == 'darwin':
+ psOptions = ['-e', '-v']
+ memoryColumn = 11
+ commandColumn = 12
+ for line in runProcess('ps', psOptions)[1:]:
+ tokens = line.split(None)
+ if len(tokens) > commandColumn: # Percentage and command
+ command = tokens[commandColumn]
+ if not command.startswith('['):
+ command = os.path.basename(command)
+ memoryUsage = round(float(tokens[memoryColumn].replace(',', '.')))
+ legend = '{} {}%'.format(command, memoryUsage)
+ result.append([legend, memoryUsage])
+
+ result.sort(key = lambda x: x[1], reverse=True)
+ return result
+
+class MainWindow(QMainWindow):
+
+ def __init__(self):
+ super(MainWindow, self).__init__()
+
+ self.setWindowTitle('Memory Usage')
+
+ memoryUsage = getMemoryUsage()
+ if len(memoryUsage) > 5:
+ memoryUsage = memoryUsage[0:4]
+
+ self.series = QtCharts.QPieSeries()
+ for item in memoryUsage:
+ self.series.append(item[0], item[1]);
+
+ slice = self.series.slices()[0]
+ slice.setExploded();
+ slice.setLabelVisible();
+ self.chart = QtCharts.QChart()
+ self.chart.addSeries(self.series);
+ self.chartView = QtCharts.QChartView(self.chart)
+ self.setCentralWidget(self.chartView)
+
+if __name__ == '__main__':
+ app = QApplication(sys.argv)
+ mainWin = MainWindow()
+ availableGeometry = app.desktop().availableGeometry(mainWin)
+ size = availableGeometry.height() * 3 / 4
+ mainWin.resize(size, size)
+ mainWin.show()
+ sys.exit(app.exec_())