110 lines
4.4 KiB
C++
110 lines
4.4 KiB
C++
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* *
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* Copyright (C) 2018 Michael Zanetti <michael.zanetti@guh.io *
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* *
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* This file is part of nymea. *
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* *
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* This library is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU Lesser General Public *
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* License as published by the Free Software Foundation; either *
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* version 2.1 of the License, or (at your option) any later version. *
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* *
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* This library is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with this library; If not, see *
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* <http://www.gnu.org/licenses/>. *
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* *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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#include "devicepluginsystemmonitor.h"
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#include "plugininfo.h"
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DevicePluginSystemMonitor::DevicePluginSystemMonitor()
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{
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}
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DevicePluginSystemMonitor::~DevicePluginSystemMonitor()
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{
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if (m_refreshTimer) {
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hardwareManager()->pluginTimerManager()->unregisterTimer(m_refreshTimer);
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}
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}
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void DevicePluginSystemMonitor::setupDevice(DeviceSetupInfo *info)
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{
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if (!m_refreshTimer) {
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m_refreshTimer = hardwareManager()->pluginTimerManager()->registerTimer(2);
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connect(m_refreshTimer, &PluginTimer::timeout, this, &DevicePluginSystemMonitor::onRefreshTimer);
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}
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info->finish(Device::DeviceErrorNoError);
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}
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void DevicePluginSystemMonitor::deviceRemoved(Device *device)
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{
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Q_UNUSED(device)
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if (myDevices().isEmpty()) {
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hardwareManager()->pluginTimerManager()->unregisterTimer(m_refreshTimer);
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m_refreshTimer = nullptr;
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}
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}
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void DevicePluginSystemMonitor::onRefreshTimer()
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{
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QProcess *p = new QProcess(this);
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connect(p, SIGNAL(finished(int,QProcess::ExitStatus)), this, SLOT(onProcessFinished(int,QProcess::ExitStatus)));
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p->start("ps", {"-C", "nymead", "-o", "%mem=,vsz=,rss=,pcpu="});
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}
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void DevicePluginSystemMonitor::onProcessFinished(int exitCode, QProcess::ExitStatus exitStatus)
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{
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QProcess *p = static_cast<QProcess*>(sender());
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p->deleteLater();
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if (exitCode != 0 || exitStatus != QProcess::NormalExit) {
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qWarning(dcSystemMonitor) << "Error reading process memory usage:" << p->readAllStandardError();
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return;
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}
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QString data = QString(p->readAllStandardOutput().trimmed()).replace(QRegExp("[ ]{2,}"), " ");
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QStringList parts = data.split(' ');
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if (parts.count() != 4) {
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qCWarning(dcSystemMonitor()) << "Unexpected result from ps" << data << parts;
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return;
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}
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bool ok;
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qreal percentMem = parts.at(0).toDouble(&ok);
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if (!ok) {
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qWarning(dcSystemMonitor) << "Failed to parse % memory value to a number:" << parts.at(0);
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return;
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}
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qint64 virtualMem = parts.at(1).toLongLong(&ok);
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if (!ok) {
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qWarning(dcSystemMonitor) << "Failed to parse virtual memory value to a number:" << parts.at(1);
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return;
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}
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quint64 rssMem = parts.at(2).toLongLong(&ok);
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if (!ok) {
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qWarning(dcSystemMonitor) << "Failed to parse RSS memory value to a number:" << data;
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return;
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}
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qreal cpuUsage = parts.at(3).toDouble(&ok);
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if (!ok) {
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qWarning(dcSystemMonitor) << "Failed to parse CPU usage value to a number:" << parts.at(3);
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return;
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}
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foreach (Device *dev, myDevices()) {
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dev->setStateValue(systemMonitorRssMemoryStateTypeId, rssMem);
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dev->setStateValue(systemMonitorPercentMemoryStateTypeId, percentMem);
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dev->setStateValue(systemMonitorVirtualMemoryStateTypeId, virtualMem);
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dev->setStateValue(systemMonitorCpuUsageStateTypeId, cpuUsage);
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}
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}
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