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/***************************************************************************
* Copyright (C) 2003 by Hans Karlsson *
* karlsson.h@home.se *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
***************************************************************************/
#include <qglobal.h>
#ifdef __FreeBSD__
#include <sys/time.h>
#include <sys/dkstat.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/resource.h>
#endif
#if defined(Q_OS_NETBSD)
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/sched.h>
#endif
#include "cpusensor.h"
CPUSensor::CPUSensor( QString cpu, int interval ) :
Sensor(interval), userTicks(0), sysTicks(0), niceTicks(0), idleTicks(0)
{
cpuNbr = cpu;
QRegExp rx("^\\d+$");
if( rx.search( cpu.lower() ) == -1)
cpuNbr = "";
cpuNbr = "cpu"+cpuNbr;
getCPULoad();
}
CPUSensor::~CPUSensor()
{
}
void CPUSensor::getTicks (long &u,long &s,long &n,long &i)
{
#ifdef __FreeBSD__
static long cp_time[CPUSTATES];
size_t size = sizeof(cp_time);
/* get the cp_time array */
if (sysctlbyname("kern.cp_time", &cp_time, &size, NULL, 0) != -1) {
u = cp_time[CP_USER];
s = cp_time[CP_SYS] + cp_time[CP_INTR];
n = cp_time[CP_NICE];
i = cp_time[CP_IDLE];
}
#else
#if defined(Q_OS_NETBSD)
static uint64_t cp_time[CPUSTATES];
size_t size = sizeof(cp_time);
/* get the cp_time array */
if (sysctlbyname("kern.cp_time", &cp_time, &size, NULL, 0) != -1) {
u = cp_time[CP_USER];
s = cp_time[CP_SYS] + cp_time[CP_INTR];
n = cp_time[CP_NICE];
i = cp_time[CP_IDLE];
}
#else
QFile file("/proc/stat");
QString line;
if ( file.open(IO_ReadOnly | IO_Translate) )
{
QTextStream t( &file ); // use a text stream
QRegExp rx( cpuNbr+"\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)\\s+(\\d+)");
line = t.readLine();
rx.search( line );
while( (line = t.readLine()) !=0 && rx.cap(0) == "" )
{
rx.search( line );
}
//user
u = rx.cap(1).toLong();
//nice
n = rx.cap(2).toLong();
//system
s = rx.cap(3).toLong();
//idle
i = rx.cap(4).toLong();
file.close();
}
#endif
#endif
else
{
u = 0;
s = 0;
n = 0;
i = 0;
}
}
int CPUSensor::getCPULoad()
{
long uTicks, sTicks, nTicks, iTicks;
getTicks(uTicks, sTicks, nTicks, iTicks);
const long totalTicks = ((uTicks - userTicks) +
(sTicks - sysTicks) +
(nTicks - niceTicks) +
(iTicks - idleTicks));
int load = (totalTicks == 0) ? 0 : (int) ( 100.0 * ( (uTicks+sTicks+nTicks) - (userTicks+sysTicks+niceTicks))/( totalTicks+0.001) + 0.5 );
user = (totalTicks == 0) ? 0 : (int) ( 100.0 * ( uTicks - userTicks)/( totalTicks+0.001) + 0.5 );
idle = (totalTicks == 0) ? 0 : (int) ( 100.0 * ( iTicks - idleTicks)/( totalTicks+0.001) + 0.5 );
system = (totalTicks == 0) ? 0 : (int) ( 100.0 * ( sTicks - sysTicks)/( totalTicks+0.001) + 0.5 );
nice = (totalTicks == 0) ? 0 : (int) ( 100.0 * ( nTicks - niceTicks)/( totalTicks+0.001) + 0.5 );
userTicks = uTicks;
sysTicks = sTicks;
niceTicks = nTicks;
idleTicks = iTicks;
return load;
}
void CPUSensor::update()
{
SensorParams *sp;
Meter *meter;
QString format;
int load = getCPULoad();
QObjectListIt it( *objList );
while (it != 0)
{
sp = (SensorParams*)(*it);
meter = sp->getMeter();
format = sp->getParam( "FORMAT" );
if( format.length() == 0)
{
format = "%v";
}
format.replace( QRegExp("%load", false), QString::number( load ) );
format.replace( QRegExp("%user", false), QString::number( user ) );
format.replace( QRegExp("%nice", false), QString::number( nice ) );
format.replace( QRegExp("%idle", false), QString::number( idle ) );
format.replace( QRegExp("%system", false), QString::number( system ) );
format.replace( QRegExp("%v", false), QString::number( load ) );
meter->setValue( format );
++it;
}
}
void CPUSensor::setMaxValue( SensorParams *sp )
{
Meter *meter;
meter = sp->getMeter();
meter->setMax( 100 );
}
#include "cpusensor.moc"
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