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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <iostream>
#include "diskloadmeter.h"
using namespace std;
DiskloadMeter::DiskloadMeter()
{
}
#ifdef __linux__
bool DiskloadMeter::getDiskload(Diskload & diskload)
{
FILE *fcinfo;
if ( (fcinfo = fopen("/proc/vmstat", "r") ) != NULL)
{
int entriesFound=0;
long readkbytes=0;
long writekbytes=0;
while (true)
{
char entry[200];
long value;
// FIXME: limit the value of scanned chars to prevent buffer overruns
int fsret = fscanf(fcinfo, "%[^\t ]%*[\t ]%ld\n", entry, &value);
if (fsret == EOF)
break;
if (fsret == 2)
{
// interpret the fscanned data
if (0 == strcmp(entry, "pgpgin"))
{
readkbytes=value;
entriesFound++;
}
if (0 == strcmp(entry, "pgpgout"))
{
writekbytes=value;
entriesFound++;
}
}
}
fclose(fcinfo);
if (2==entriesFound)
{
diskload.readkbytespersec =readKBytesDeriver.setCurrentValueAndGetDerivation(readkbytes);
diskload.writekbytespersec=writeKBytesDeriver.setCurrentValueAndGetDerivation(writekbytes);
return true;
}
}
return false;
}
#endif
#ifdef __sun__
bool DiskloadMeter::getDiskload(Diskload & diskload)
{
diskload.readkbytespersec = -1.;
diskload.writekbytespersec = -1.;
return false;
}
#endif
#ifdef __FreeBSD__
bool DiskloadMeter::getDiskload(Diskload & diskload)
{
diskload.readkbytespersec = -1.;
diskload.writekbytespersec = -1.;
return false;
}
#endif
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