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119 lines
3.3 KiB
119 lines
3.3 KiB
9 years ago
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/* BEGIN_COMMON_COPYRIGHT_HEADER
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* (c)LGPL2+
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**
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** SysStat is a Qt-based interface to system statistics
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**
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** Authors:
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** Copyright (c) 2009 - 2012 Kuzma Shapran <Kuzma.Shapran@gmail.com>
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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;
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** if not, write to the Free Software Foundation, Inc.,
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** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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**
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** END_COMMON_COPYRIGHT_HEADER */
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#include "memstat.h"
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#include "memstat_p.h"
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namespace SysStat {
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MemStatPrivate::MemStatPrivate(MemStat *parent)
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: BaseStatPrivate(parent)
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{
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mSource = defaultSource();
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connect(mTimer, SIGNAL(timeout()), SLOT(timeout()));
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mSources << "memory" << "swap";
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}
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MemStatPrivate::~MemStatPrivate()
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{
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}
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void MemStatPrivate::timeout()
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{
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qulonglong memTotal;
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qulonglong memFree;
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qulonglong memBuffers;
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qulonglong memCached;
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qulonglong swapTotal;
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qulonglong swapFree;
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foreach (QString row, readAllFile("/proc/meminfo").split(QChar('\n'), QString::SkipEmptyParts))
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{
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QStringList tokens = row.split(QChar(' '), QString::SkipEmptyParts);
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if (tokens.size() != 3)
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continue;
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if (tokens[0] == "MemTotal:")
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memTotal = tokens[1].toULong();
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else if(tokens[0] == "MemFree:")
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memFree = tokens[1].toULong();
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else if(tokens[0] == "Buffers:")
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memBuffers = tokens[1].toULong();
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else if(tokens[0] == "Cached:")
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memCached = tokens[1].toULong();
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else if(tokens[0] == "SwapTotal:")
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swapTotal = tokens[1].toULong();
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else if(tokens[0] == "SwapFree:")
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swapFree = tokens[1].toULong();
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}
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if (mSource == "memory")
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{
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if (memTotal)
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{
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float memTotal_d = static_cast<float>(memTotal);
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float applications_d = static_cast<float>(memTotal - memFree - memBuffers - memCached) / memTotal_d;
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float buffers_d = static_cast<float>(memBuffers) / memTotal_d;
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float cached_d = static_cast<float>(memCached) / memTotal_d;
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emit memoryUpdate(applications_d, buffers_d, cached_d);
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}
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}
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else if (mSource == "swap")
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{
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if (swapTotal)
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{
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float swapUsed_d = static_cast<float>(swapTotal - swapFree) / static_cast<float>(swapTotal);
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emit swapUpdate(swapUsed_d);
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}
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}
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}
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QString MemStatPrivate::defaultSource()
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{
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return "memory";
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}
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MemStat::MemStat(QObject *parent)
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: BaseStat(parent)
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{
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impl = new MemStatPrivate(this);
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baseimpl = impl;
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connect(impl, SIGNAL(memoryUpdate(float,float,float)), this, SIGNAL(memoryUpdate(float,float,float)));
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connect(impl, SIGNAL(swapUpdate(float)), this, SIGNAL(swapUpdate(float)));
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}
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MemStat::~MemStat()
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{
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}
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}
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